KR102697125B1 - Wireless media device, and image display apparatus including the same - Google Patents

Abstract

A wireless media device according to an embodiment of the present disclosure comprises a signal processing device and a communication device which wirelessly transmits a signal from the signal processing device to an external display device, wherein the communication device transmits a first signal based on a first shape beam whose sectors are sequentially varied during a first period, receives a second signal based on the first shape beam from the display device during a third period according to a selection of the wireless media device by the display device during a second period, approves an association with the display device based on network address information in the second signal during a fourth period, transmits a third signal based on the second shape beam at a smaller angle than the first shape during a fifth period, and performs wireless media transmission to the display device based on the second shape beam during a sixth period, and when the range of an error during the wireless media transmission is within the first range, the communication device performs the fifth to sixth periods again, and when it exceeds the first range, the first to sixth periods again. As a result, when an error occurs during the wireless media transmission, rapid recovery is possible.

Description

{Wireless media device, and image display apparatus including the same}

The present disclosure relates to a video display device, and more particularly, to a video display device capable of quickly recovering from an error that occurs during wireless media transmission.

A video display device is a device that displays images through a display.

Meanwhile, in addition to video, sound can also be output through the audio output section via the video display device.

Meanwhile, for image output on the display of the image display device, a signal processing device performs image signal processing, etc.

Recently, for the sake of convenience of use, a method of separating the display and signal processing device within a video display device and performing media transmission between the display and signal processing device via wireless communication rather than wired communication is being studied.

Meanwhile, when transmitting media via wireless communication, there is a possibility of errors occurring, and when errors occur, problems such as a broken screen being displayed or pop noise being output can occur.

The problem that the present disclosure seeks to solve is to provide a video display device that can quickly recover when an error occurs during wireless media transmission.

Another problem that the present disclosure seeks to solve is to provide a video display device that can efficiently recover by differentiating the recovery process depending on the error range when an error occurs during wireless media transmission.

A wireless media device according to an embodiment of the present disclosure comprises a signal processing device that processes a video signal or an audio signal, and a communication device that wirelessly transmits a signal from the signal processing device to an external display device, wherein the communication device transmits a first signal based on a first shape beam whose sectors are sequentially varied during a first period, receives a second signal based on the first shape beam from the display device during a third period according to a selection of the wireless media device by the display device during a second period, approves an association with the display device based on network address information in the second signal during a fourth period, transmits a third signal based on the second shape beam at a smaller angle than the first shape during a fifth period, and performs wireless media transmission to the display device based on the second shape beam during a sixth period, and when an error range during the wireless media transmission is within a first range, the communication device performs the fifth to sixth periods again, and when it exceeds the first range, the first to sixth periods again.

Meanwhile, the communication device can select one of the plurality of sectors during a third period, exchange control data with the display device during a fourth period, and select one of the plurality of beams within the selected sector during a fifth period.

Meanwhile, the communication device may be equipped with a 2*2 based MIMO antenna.

Meanwhile, the communication device can perform wireless communication based on the 802.11 ad/ay standard.

A wireless media device according to another embodiment of the present disclosure comprises a signal processing device for processing a video signal or an audio signal, and a communication device for wirelessly transmitting a signal from the signal processing device to an external display device, wherein the communication device transmits a first signal based on a beam of a first shape in which sectors are sequentially varied during a first period, receives a second signal based on a beam of the first shape from the display device during a third period according to a selection of the wireless media device of the display device during a second period, approves an association with the display device based on network address information in the second signal during a fourth period, transmits a third signal based on a beam of the second shape at a smaller angle than the first shape during a fifth period, and performs wireless media transmission to the display device based on a beam of the second shape during a sixth period, wherein, when the range of an error during the wireless media transmission is within the first range, the communication device performs the fifth to sixth periods again, when the range of an error exceeds the first range and is within the second range, the third to sixth periods again, and when it exceeds the second range, the first period The sixth period is performed again.

According to another embodiment of the present disclosure, a wireless media device comprises a signal processing device that processes a video signal or an audio signal, and a communication device that wirelessly transmits a signal from the signal processing device to an external display device, wherein the communication device transmits a first signal based on a first shape beam whose sectors are sequentially varied during a first period, receives a second signal based on the first shape beam from the display device during a third period according to a selection of the wireless media device of the display device during a second period, approves an association with the display device based on network address information in the second signal during a fourth period, transmits a third signal based on the second shape beam at a smaller angle than the first shape during a fifth period, and performs wireless media transmission to the display device based on the second shape beam during a sixth period, and when the range of an error in the wireless media transmission is within the first range, the communication device performs the third period to the sixth period again, and when it exceeds the first range, the communication device performs the first period to the sixth period again.

According to an embodiment of the present disclosure, a video display device includes a display device and a wireless media device, wherein the wireless media device includes a signal processing device that processes a video signal or an audio signal, and a communication device that wirelessly transmits a signal from the signal processing device to an external display device, wherein the communication device transmits a first signal based on a first shape beam whose sectors are sequentially varied during a first period, receives a second signal based on the first shape beam from the display device during a third period according to a selection of the wireless media device by the display device during a second period, approves an association with the display device based on network address information in the second signal during a fourth period, transmits a third signal based on the second shape beam at a smaller angle than the first shape during a fifth period, and performs wireless media transmission to the display device based on the second shape beam during a sixth period, and the communication device performs the fifth to sixth periods again, performs the third to sixth periods again, or performs the first to sixth periods again, depending on a range of an error during the wireless media transmission.

Meanwhile, the display device includes a display and a second communication device that performs wireless communication with the wireless media device.

Meanwhile, the second communication device may receive, during a first period, a first signal based on a beam of a first shape with a variable sector sequentially, select a wireless media device based on the first signal during a second period, transmit, during a third period, a second signal based on a beam of the first shape including network address information, approve an association with the wireless media device during a fourth period, receive, during a fifth period, a third signal based on a beam of the second shape with a smaller angle than the first shape, and display an image on the display based on the wireless media reception based on the beam of the second shape during a sixth period.

Meanwhile, the second communication device, when receiving wireless media, if the range of the error is within the first range, can perform the fifth to sixth periods again, and if it exceeds the first range, can perform the first to sixth periods again.

Meanwhile, when receiving wireless media, the second communication device may perform the fifth to sixth periods again if the range of the error is within the first range, perform the third to sixth periods again if the range of the error exceeds the first range and is within the second range, and perform the first to sixth periods again if it exceeds the second range.

Meanwhile, the second communication device, when receiving wireless media, if the range of the error is within the first range, can perform the third to sixth periods again, and if it exceeds the first range, can perform the first to sixth periods again.

A wireless media device according to an embodiment of the present disclosure comprises a signal processing device for processing a video signal or an audio signal, and a communication device for wirelessly transmitting a signal from the signal processing device to an external display device, wherein the communication device transmits a first signal based on a first shape beam whose sectors are sequentially varied during a first period, receives a second signal based on the first shape beam from the display device during a third period according to a selection of the wireless media device by the display device during a second period, approves an association with the display device based on network address information in the second signal during a fourth period, transmits a third signal based on the second shape beam at a smaller angle than the first shape during a fifth period, and performs wireless media transmission to the display device based on the second shape beam during a sixth period, and when the range of an error during the wireless media transmission is within the first range, the communication device performs the fifth to sixth periods again, and when it exceeds the first range, the first to sixth periods again. Accordingly, when an error occurs during the wireless media transmission, it is possible to quickly recover. In addition, the present invention provides an image display device capable of efficient recovery by differentiating the recovery process depending on the error range.

Meanwhile, the communication device can select one of the plurality of sectors during a third period, exchange control data with the display device during a fourth period, and select one of the plurality of beams within the selected sector during a fifth period. Accordingly, it is possible to quickly recover when an error occurs during wireless media transmission.

Meanwhile, the communication device may be equipped with a 2*2 based MIMO antenna. Accordingly, it can output multiple sector-specific beams.

Meanwhile, the communication device can perform wireless communication based on the 802.11 ad/ay standard. Accordingly, media data can be transmitted stably wirelessly.

A wireless media device according to another embodiment of the present disclosure comprises a signal processing device for processing a video signal or an audio signal, and a communication device for wirelessly transmitting a signal from the signal processing device to an external display device, wherein the communication device transmits a first signal based on a beam of a first shape in which sectors are sequentially varied during a first period, receives a second signal based on a beam of the first shape from the display device during a third period according to a selection of the wireless media device of the display device during a second period, approves an association with the display device based on network address information in the second signal during a fourth period, transmits a third signal based on a beam of the second shape at a smaller angle than the first shape during a fifth period, and performs wireless media transmission to the display device based on a beam of the second shape during a sixth period, wherein, when the range of an error during the wireless media transmission is within the first range, the communication device performs the fifth to sixth periods again, when the range of an error exceeds the first range and is within the second range, the third to sixth periods again, and when it exceeds the second range, the first period The sixth period is performed again. Accordingly, it is possible to quickly recover when an error occurs during wireless media transmission. In addition, it is possible to recover efficiently by differentiating the recovery process depending on the error range.

According to another embodiment of the present disclosure, a wireless media device comprises a signal processing device for processing a video signal or an audio signal, and a communication device for wirelessly transmitting a signal from the signal processing device to an external display device, wherein the communication device transmits a first signal based on a first shape beam whose sectors are sequentially varied during a first period, receives a second signal based on the first shape beam from the display device during a third period according to a selection of the wireless media device by the display device during a second period, approves an association with the display device based on network address information in the second signal during a fourth period, transmits a third signal based on the second shape beam at a smaller angle than the first shape during a fifth period, and performs wireless media transmission to the display device based on the second shape beam during a sixth period, and when the range of an error during the wireless media transmission is within the first range, the communication device performs the third period to the sixth period again, and when it exceeds the first range, the first period to the sixth period again. Accordingly, when an error occurs during the wireless media transmission, it is possible to quickly recover. Additionally, by differentiating the recovery process depending on the error range, efficient recovery is possible.

According to an embodiment of the present disclosure, a video display device includes a display device and a wireless media device, wherein the wireless media device includes a signal processing device that processes a video signal or an audio signal, and a communication device that wirelessly transmits a signal from the signal processing device to an external display device, wherein the communication device transmits a first signal based on a first shape beam whose sectors are sequentially varied during a first period, receives a second signal based on the first shape beam from the display device during a third period according to a selection of the wireless media device by the display device during a second period, approves an association with the display device based on network address information in the second signal during a fourth period, transmits a third signal based on the second shape beam at a smaller angle than the first shape during a fifth period, and performs wireless media transmission to the display device based on the second shape beam during a sixth period, and the communication device performs the fifth to sixth periods again, performs the third to sixth periods again, or performs the first to sixth periods again, depending on a range of an error during the wireless media transmission. Accordingly, it is possible to quickly recover when an error occurs during wireless media transmission. In addition, it is possible to recover efficiently by differentiating the recovery process depending on the error range.

Meanwhile, the display device includes a display and a second communication device that performs wireless communication with the wireless media device. Accordingly, the display device can stably receive media data wirelessly from the wireless media device.

Meanwhile, the second communication device may receive, during a first period, a first signal based on a beam of a first shape with a variable sector sequentially, select a wireless media device based on the first signal during a second period, transmit, during a third period, a second signal based on a beam of the first shape including network address information, approve an association with the wireless media device during a fourth period, receive, during a fifth period, a third signal based on a beam of the second shape with a smaller angle than the first shape, and display an image on the display based on the wireless media reception based on the beam of the second shape during a sixth period. Accordingly, the display device may stably display an image.

Meanwhile, the second communication device, when receiving wireless media, if the range of the error is within the first range, can perform the fifth to sixth periods again, and if it exceeds the first range, can perform the first to sixth periods again. Accordingly, when an error occurs during wireless media transmission, it is possible to quickly recover. In addition, by differentiating the recovery process depending on the error range, it is possible to efficiently recover.

Meanwhile, when receiving wireless media, if the range of the error is within the first range, the second communication device can perform the fifth to sixth periods again, and if the range of the error exceeds the first range and is within the second range, the third to sixth periods can be performed again, and if it exceeds the second range, the first to sixth periods can be performed again. Accordingly, when an error occurs during wireless media transmission, it is possible to quickly recover. In addition, by differentiating the recovery process depending on the error range, it is possible to efficiently recover.

Meanwhile, the second communication device, when receiving wireless media, if the range of the error is within the first range, can perform the third to sixth periods again, and if it exceeds the first range, can perform the first to sixth periods again. Accordingly, when an error occurs during wireless media transmission, it is possible to quickly recover. In addition, by differentiating the recovery process depending on the range of the error, it is possible to efficiently recover.

FIG. 1 is a drawing illustrating an image display device according to an embodiment of the present disclosure.
FIG. 2 is an internal block diagram of an image display device according to one embodiment of the present disclosure.
Figure 3 is an internal block diagram of the signal processing device of Figure 2.
FIG. 4a is a drawing illustrating a control method of the remote control device of FIG. 2.
Figure 4b is an internal block diagram of the remote control device of Figure 2.
Figure 5 is an internal block diagram of the display of Figure 2.
FIGS. 6A and 6B are drawings for reference in the description of the organic light-emitting panel of FIG. 5.
FIG. 7 is a drawing referenced in the description of the communication device and the second communication device of FIG. 2.
Figure 8 is a flowchart showing the operation of a communication device related to the present disclosure.
FIG. 9 is a flowchart showing the operation of an image display device according to an embodiment of the present disclosure.
Figure 10 is a drawing referenced in the description of Figure 9.
FIG. 11 is a flowchart showing the operation of an image display device according to another embodiment of the present disclosure.
FIG. 12 is a flowchart showing the operation of an image display device according to another embodiment of the present disclosure.

Hereinafter, the present disclosure will be described in more detail with reference to the drawings.

The suffixes "module" and "part" used for components in the following description are given simply for the convenience of writing this specification, and do not in themselves impart any particularly important meaning or role. Accordingly, the above "module" and "part" may be used interchangeably.

FIG. 1 is a drawing illustrating an image display device according to an embodiment of the present disclosure.

Referring to FIG. 1, an image display device (100) according to an embodiment of the present disclosure includes a display device (50) and a wireless media device (300).

A wireless media device (300) and a display device (50) in a video display device (100) according to an embodiment of the present disclosure are separated from each other and transmit and receive media wirelessly.

Meanwhile, a wireless media device (300) within a video display device (100) can wirelessly transmit a video signal or audio signal to a display device (50) in an uncompressed manner.

For example, a wireless media device (300) within a video display device (100) can transmit a video signal or audio signal to a display device (50) based on wireless communication based on the 802.11 ad/ay standard.

In the case where a video signal or audio signal is transmitted uncompressed to a display device (50) in a wireless media device (300), in order to secure a stable wireless bandwidth, the wireless media device (300) can transmit media data to the display device (50) using a frequency based on 60 GHz.

Meanwhile, when transmitting media via wireless communication, there is a possibility of errors occurring, and when errors occur, a method to quickly recover becomes important.

To this end, the wireless media device (300) according to the embodiment of the present disclosure transmits, during a first period, a first signal based on a beam of a first shape whose sectors are sequentially varied, receives, during a second period, a second signal based on a beam of the first shape from the display device (50), according to the selection of the wireless media device (300) of the display device (50), during a third period, approves an association with the display device (50) based on network address information in the second signal, during a fourth period, transmits, during a fifth period, a third signal based on a beam of the second shape at a smaller angle than the first shape, and performs wireless media transmission to the display device (50) based on the beam of the second shape, during a sixth period, and when the range of an error during the wireless media transmission is within the first range, the fifth to sixth periods are performed again, and when it exceeds the first range, the first to sixth periods are performed again. Accordingly, when an error occurs during wireless media transmission, it is possible to quickly recover. Additionally, by differentiating the recovery process depending on the error range, efficient recovery is possible.

Meanwhile, a wireless media device (300) according to another embodiment of the present disclosure performs the first to sixth periods, and when the range of an error during wireless media transmission is within the first range, the fifth to sixth periods are performed again, and when the range of an error exceeds the first range and is within the second range, the third to sixth periods are performed again, and when it exceeds the second range, the first to sixth periods are performed again. Accordingly, when an error occurs during wireless media transmission, it is possible to quickly recover. In addition, by differentiating the recovery process depending on the range of errors, it is possible to efficiently recover.

Meanwhile, a wireless media device (300) according to another embodiment of the present disclosure performs the first to sixth periods, and when the range of an error during wireless media transmission is within the first range, performs the third to sixth periods again, and when it exceeds the first range, performs the first to sixth periods again. Accordingly, when an error occurs during wireless media transmission, it is possible to quickly recover. In addition, by differentiating the recovery process depending on the range of errors, it is possible to efficiently recover.

FIG. 2 is an internal block diagram of an image display device according to one embodiment of the present disclosure.

Referring to FIG. 2, an image display device (100) according to one embodiment of the present disclosure includes a wireless media device (300) and a display device (50).

A wireless media device (300) may be equipped with a video receiving unit (105), a memory (140), a power supply unit (190), a signal processing unit (170), and a communication device (160a).

The display device (50) may include a second communication device (160b), a user input interface unit (150), a display (180), an audio output unit (185), and a power supply unit (195).

The video receiving unit (105) may include a tuner unit (110), a demodulator unit (120), a network interface unit (135), and an external device interface unit (130).

The tuner unit (110) selects an RF broadcast signal corresponding to a channel selected by the user or all pre-stored channels among RF (Radio Frequency) broadcast signals received through the antenna (50). In addition, it converts the selected RF broadcast signal into an intermediate frequency signal or a baseband image or audio signal.

For example, if the selected RF broadcast signal is a digital broadcast signal, it is converted into a digital IF signal (DIF), and if it is an analog broadcast signal, it is converted into an analog baseband video or audio signal (CVBS/SIF). That is, the tuner unit (110) can process a digital broadcast signal or an analog broadcast signal. The analog baseband video or audio signal (CVBS/SIF) output from the tuner unit (110) can be directly input to the signal processing device (170).

Meanwhile, the tuner unit (110) may be equipped with multiple tuners to receive broadcast signals of multiple channels. Alternatively, a single tuner that simultaneously receives broadcast signals of multiple channels is also possible.

The demodulation unit (120) receives a digital IF signal (DIF) converted from the tuner unit (110) and performs a demodulation operation.

The demodulator (120) can output a stream signal (TS) after performing demodulation and channel decoding. At this time, the stream signal can be a signal in which a video signal, an audio signal, or a data signal is multiplexed.

The stream signal output from the demodulator (120) can be input to the signal processing device (170). The signal processing device (170) performs demultiplexing, image/audio signal processing, etc., and then outputs an image to the display (180) and outputs an audio to the audio output device (185).

The external device interface unit (130) can transmit or receive data with a connected external device (not shown). To this end, the external device interface unit (130) can include an A/V input/output unit (not shown) or a wireless communication unit (not shown).

The external device interface unit (130) can be connected to external devices such as a DVD (Digital Versatile Disk), Blu ray, game device, camera, camcorder, computer (laptop), set-top box, USB, etc., via wired/wireless connection, and can also perform input/output operations with the external devices.

The A/V input/output section can receive video and audio signals from an external device. Meanwhile, the wireless communication section can perform short-range wireless communication with other electronic devices.

The network interface unit (135) provides an interface for connecting the video display device (100) to a wired/wireless network including the Internet. For example, the network interface unit (135) can receive content or data provided by the Internet or a content provider or a network operator through a network.

The memory (140) may store programs for each signal processing and control within the signal processing device (170), and may also store signal-processed images, voices, or data signals.

In addition, the memory (140) may perform a function for temporary storage of video, audio or data signals input to the external device interface unit (130). In addition, the memory (140) may store information about a specific broadcast channel through a channel memory function such as a channel map.

Although the memory (140) of Fig. 2 illustrates an embodiment in which the memory (140) is provided separately from the signal processing device (170), the scope of the present disclosure is not limited thereto. The memory (140) may be included in the signal processing device (170).

The signal processing device (170) can demultiplex an input stream or process demultiplexed signals through a tuner unit (110), a demodulator unit (120), or an external device interface unit (130) to generate and output a signal for video or audio output.

An image signal processed in a signal processing device (170) may be input to a display (180) and displayed as an image corresponding to the image signal. In addition, an image signal processed in a signal processing device (170) may be input to an external output device through an external device interface unit (130).

The voice signal processed in the signal processing device (170) can be output as sound to the audio output unit (185). In addition, the voice signal processed in the signal processing device (170) can be input to an external output device through the external device interface unit (130).

Although not shown in FIG. 2, the signal processing device (170) may include a demultiplexing unit, an image processing unit, etc. This will be described later with reference to FIG. 3.

In addition, the signal processing device (170) can control the overall operation within the video display device (100). For example, the signal processing device (170) can control the tuner unit (110) to select (tune) an RF broadcast corresponding to a channel selected by a user or a pre-stored channel.

In addition, the signal processing device (170) can control the image display device (100) by a user command or internal program input through the user input interface unit (150).

Meanwhile, the signal processing device (170) can control the display (180) to display an image. At this time, the image displayed on the display (180) may be a still image or a moving image.

Meanwhile, the signal processing device (170) can recognize the user's location based on the image captured from the shooting unit (not shown). For example, the distance (z-axis coordinate) between the user and the image display device (100) can be determined. In addition, the x-axis coordinate and the y-axis coordinate within the display (180) corresponding to the user's location can be determined.

Meanwhile, although not shown in the drawing, it is also possible to further include a channel browsing processing unit that generates a thumbnail image corresponding to a channel signal or an external input signal. The channel browsing processing unit can receive a stream signal (TS) output from a demodulation unit (120) or a stream signal output from an external device interface unit (130), extract an image from the input stream signal, and generate a thumbnail image.

The generated thumbnail image can be stream decoded together with the decoded image and input to the signal processing device (170). The signal processing device (170) can display a thumbnail list including multiple thumbnail images on the display (180) using the input thumbnail image.

The thumbnail list at this time can be displayed in a simple view mode in which a certain image is displayed on a portion of the display (180), or in a full view mode in which the image is displayed on most of the display (180). The thumbnail images in this thumbnail list can be sequentially updated.

The power supply unit (190) supplies power to the entire wireless media device (300). In particular, power can be supplied to a signal processing device (170) that can be implemented in the form of a system on chip (SOC), a communication device (160a) for communication, an image receiving unit (105), a memory (140), etc.

Meanwhile, the power supply unit (190) may be equipped with a converter that converts AC power into DC power and a dc/dc converter that converts the level of the DC power.

The communication device (160a) can perform wireless communication with the second communication device (160b) within the display device (50).

The second communication device (160b) can perform wireless communication with the communication device (160a) within the wireless media device (300).

The video signal and audio signal received from the second communication device (160b) can be transmitted to the display (180) and audio output unit (185), respectively.

The display (180) converts an image signal, data signal, OSD signal, control signal, etc. processed by the signal processing device (170) or an image signal, data signal, control signal, etc. received from the external device interface unit (130) to generate a driving signal.

The display (180) can be an LCD, OLED, inorganic LED, flexible display, etc., and may also be a 3D display.

Meanwhile, the display (180) is configured as a touch screen and can be used as an input device in addition to an output device.

The audio output unit (185) converts an audio signal received from the second communication device (160b) into sound and outputs it.

Meanwhile, the audio output unit (185) may be equipped with at least one speaker.

Meanwhile, the power supply unit (195) supplies power to the entire display device (50). In particular, power can be supplied to the second communication device (160b) for communication, the display (180), the audio output unit (185), the user input interface unit (150), etc.

Meanwhile, the power supply unit (195) may be equipped with a converter that converts AC power into DC power and a dc/dc converter that converts the level of the DC power.

The user input interface unit (150) can transmit a signal input by the user to the second communication device (160b). In addition, the second communication device (160b) can wirelessly transmit the signal input by the user to the communication device (160a), and the signal processing device (170) can receive the signal input by the user through the communication device (160a).

For example, a user input signal such as power on/off, channel selection, screen setting, etc. from a remote control device (200), or a user input signal input from a local key (not shown) such as a power key, channel key, volume key, setting value, etc., can be transmitted to a signal processing device (170) via a second communication device (160b) and a communication device (160a).

Meanwhile, the signal processing device (170) can transmit various types of information or signals to the remote control device (200) via the communication device (160a), the second communication device (160b), and the user input interface unit (150).

The remote control device (200) transmits user input to the user input interface unit (150). To this end, the remote control device (200) may use Bluetooth, RF (Radio Frequency) communication, IR (Infrared) communication, UWB (Ultra Wideband), ZigBee, etc. In addition, the remote control device (200) may receive images, voices, or data signals output from the user input interface unit (150) and display or output them as voices on the remote control device (200).

Meanwhile, the above-described video display device (100) may be a digital broadcast receiver capable of receiving fixed or mobile digital broadcasts.

Meanwhile, the block diagram of the image display device (100) illustrated in FIG. 2 is a block diagram for one embodiment of the present disclosure. Each component of the block diagram may be integrated, added, or omitted according to the specifications of the image display device (100) actually implemented. That is, two or more components may be combined into one component, or one component may be subdivided into two or more components, as needed. In addition, the functions performed by each block are for explaining the embodiment of the present disclosure, and the specific operations or devices thereof do not limit the scope of the rights of the present disclosure.

Figure 3 is an internal block diagram of the signal processing device of Figure 2.

Referring to the drawings, a signal processing device (170) according to an embodiment of the present disclosure may include a demultiplexer (310), an image processing unit (320), a processor (330), an OSD processing unit (340), a mixer (345), a frame rate converter (350), a formatter (360), and an audio processing unit (370). In addition, an audio processing unit (370) and a data processing unit (not shown) may be further included.

The demultiplexer (310) demultiplexes the input stream. For example, if MPEG-2 TS is input, it can be demultiplexed to separate it into video, audio, and data signals, respectively. Here, the stream signal input to the demultiplexer (310) may be a stream signal output from the tuner (110), the demodulator (120), or the external device interface (130).

The image processing unit (320) can perform image processing of a demultiplexed image signal. To this end, the image processing unit (320) can be equipped with an image decoder (225) and a scaler (235).

The video decoder (225) decodes the demultiplexed video signal, and the scaler (235) scales the resolution of the decoded video signal so that it can be output on the display (180).

The video decoder (225) can be equipped with decoders of various specifications.

The processor (330) can control the overall operation within the signal processing device (170). For example, the processor (330) can control the tuner unit (110) to select (tune) an RF broadcast corresponding to a channel selected by a user or a pre-stored channel.

Additionally, the processor (330) can control the image display device (100) by a user command or internal program input through the user input interface unit (150).

Additionally, the processor (330) can perform data transmission control with the network interface unit (135) or the external device interface unit (130).

In addition, the processor (330) can control the operation of the demultiplexing unit (310), the image processing unit (320), the OSD processing unit (340), etc. within the signal processing device (170).

The OSD processing unit (340) generates an OSD signal based on a user input or on its own. For example, based on a user input signal, a signal for displaying various information as graphics or text on the screen of the display (180) can be generated. The generated OSD signal can include various data such as a user interface screen of the image display device (100), various menu screens, widgets, and icons. In addition, the generated OSD signal can include a 2D object or a 3D object.

In addition, the OSD processing unit (340) can generate a pointer that can be displayed on the display based on a pointing signal input from the remote control device (200). In particular, such a pointer can be generated in the pointing signal processing unit, and the OSD processing unit (240) can include such a pointing signal processing unit (not shown). Of course, the pointing signal processing unit (not shown) can also be provided separately, rather than being included in the OSD processing unit (240).

The mixer (345) can mix the OSD signal generated by the OSD processing unit (340) and the decoded image signal processed by the image processing unit (320). At this time, the OSD signal and the decoded image signal can each include at least one of a 2D signal and a 3D signal. The mixed image signal is provided to the frame rate conversion unit (350).

The frame rate converter (FRC) (350) can convert the frame rate of an input video. Meanwhile, the frame rate converter (350) can also output as is without a separate frame rate conversion.

Meanwhile, the formatter (360) can receive a mixed signal from the mixer (345), that is, an OSD signal and a decoded image signal, and change the format of the image signal.

Meanwhile, although not shown in the drawing, a 3D processor (not shown) for 3D effect signal processing may be further arranged after the formatter (360). This 3D processor (not shown) may process brightness, tint, and color adjustment of the image signal to improve the 3D effect. For example, it may perform signal processing to make a close distance clear and a long distance blurry. Meanwhile, the function of this 3D processor may be incorporated into the formatter (360) or incorporated into the image processing unit (320).

Meanwhile, the audio processing unit (370) within the signal processing device (170) can perform demultiplexed audio signal processing or audio signal processing of predetermined content. For this purpose, the audio processing unit (370) can be equipped with various decoders.

Additionally, the audio processing unit (370) within the signal processing device (170) can process bass, treble, volume control, etc.

The data processing unit (not shown) in the signal processing device (170) can perform data processing of a demultiplexed data signal. For example, if the demultiplexed data signal is an encoded data signal, it can be decoded. The encoded data signal can be EPG (Electronic Program Guide) information that includes broadcast information such as the start time and end time of a broadcast program broadcast on each channel.

Meanwhile, in FIG. 3, signals from the OSD processing unit (340) and the image processing unit (320) are mixed in a mixer (345) and then processed in a formatter (360), but this is not limited to this, and the mixer may also be located behind the formatter.

Meanwhile, the block diagram of the signal processing device (170) illustrated in Fig. 3 is a block diagram for one embodiment of the present disclosure. Each component of the block diagram may be integrated, added, or omitted depending on the specifications of the signal processing device (170) actually implemented.

In particular, the frame rate converter (350) and the formatter (360) may not be provided within the signal processing device (170), but may be provided separately, or may be provided separately as one module.

FIG. 4a is a drawing illustrating a control method of the remote control device of FIG. 2.

As shown in (a) of Fig. 4a, a pointer (205) corresponding to a remote control device (200) is displayed on the display (180).

The user can move or rotate the remote control device (200) up and down, left and right ((b) of FIG. 4a), forward and backward ((c) of FIG. 4a). The pointer (205) displayed on the display (180) of the image display device corresponds to the movement of the remote control device (200). As shown in the drawing, the pointer (205) of this remote control device (200) is moved and displayed according to the movement in 3D space, so it can be called a space remote control or a 3D pointing device.

Figure 4a (b) exemplifies that when a user moves a remote control device (200) to the left, a pointer (205) displayed on a display (180) of a video display device also moves to the left in response.

Information about the movement of the remote control device (200) detected by the sensor of the remote control device (200) is transmitted to the image display device. The image display device can calculate the coordinates of the pointer (205) from the information about the movement of the remote control device (200). The image display device can display the pointer (205) to correspond to the calculated coordinates.

FIG. 4A (c) illustrates a case where a user moves the remote control device (200) away from the display (180) while pressing a specific button within the remote control device (200). As a result, a selection area within the display (180) corresponding to the pointer (205) may be zoomed in and displayed in an enlarged manner. Conversely, when the user moves the remote control device (200) closer to the display (180), a selection area within the display (180) corresponding to the pointer (205) may be zoomed out and displayed in a reduced manner. Meanwhile, when the remote control device (200) moves away from the display (180), the selection area may be zoomed out, and when the remote control device (200) moves closer to the display (180), the selection area may be zoomed in.

Meanwhile, when a specific button in the remote control device (200) is pressed, recognition of up, down, left, and right movements can be excluded. That is, when the remote control device (200) moves away from or toward the display (180), up, down, left, and right movements are not recognized, and only forward and backward movements can be recognized. When a specific button in the remote control device (200) is not pressed, only the pointer (205) moves according to the up, down, left, and right movements of the remote control device (200).

Meanwhile, the movement speed or movement direction of the pointer (205) can correspond to the movement speed or movement direction of the remote control device (200).

Figure 4b is an internal block diagram of the remote control device of Figure 2.

Referring to the drawings, the remote control device (200) may include a wireless communication unit (425), a user input unit (435), a sensor unit (440), an output unit (450), a power supply unit (460), a storage unit (470), and a control unit (480).

The wireless communication unit (425) transmits and receives signals with any one of the image display devices according to the embodiments of the present disclosure described above. Among the image display devices according to the embodiments of the present disclosure, one image display device (100) will be described as an example.

In this embodiment, the remote control device (200) may be equipped with an RF module (421) capable of transmitting and receiving signals with the image display device (100) in accordance with RF communication standards. In addition, the remote control device (200) may be equipped with an IR module (423) capable of transmitting and receiving signals with the image display device (100) in accordance with IR communication standards.

In this embodiment, the remote control device (200) transmits a signal containing information about the movement of the remote control device (200) to the image display device (100) through the RF module (421).

In addition, the remote control device (200) can receive a signal transmitted by the image display device (100) through the RF module (421). In addition, the remote control device (200) can transmit commands for power on/off, channel change, volume change, etc. to the image display device (100) through the IR module (423) as needed.

The user input unit (435) may be composed of a keypad, a button, a touch pad, or a touch screen. The user can input a command related to the image display device (100) to the remote control device (200) by operating the user input unit (435). If the user input unit (435) has a hard key button, the user can input a command related to the image display device (100) to the remote control device (200) by a push operation of the hard key button. If the user input unit (435) has a touch screen, the user can input a command related to the image display device (100) to the remote control device (200) by touching a soft key of the touch screen. In addition, the user input unit (435) may be equipped with various types of input means that the user can operate, such as a scroll key or a jog key, and the present embodiment does not limit the scope of the rights of the present disclosure.

The sensor unit (440) may be equipped with a gyro sensor (441) or an acceleration sensor (443). The gyro sensor (441) may sense information about the movement of the remote control device (200).

For example, the gyro sensor (441) can sense information about the operation of the remote control device (200) based on the x, y, and z axes. The acceleration sensor (443) can sense information about the moving speed of the remote control device (200). Meanwhile, a distance measuring sensor can be additionally provided, and thereby the distance to the display (180) can be sensed.

The output unit (450) can output a video or audio signal corresponding to the operation of the user input unit (435) or to the signal transmitted from the video display device (100). Through the output unit (450), the user can recognize whether the user input unit (435) is being operated or whether the video display device (100) is being controlled.

For example, the output unit (450) may be equipped with an LED module (451) that lights up when the user input unit (435) is operated or a signal is transmitted and received with the image display device (100) through the wireless communication unit (425), a vibration module (453) that generates vibration, an audio output module (455) that outputs audio, or a display (457) that outputs an image.

The power supply unit (460) supplies power to the remote control device (200). The power supply unit (460) can reduce power waste by stopping the power supply when the remote control device (200) does not move for a predetermined period of time. The power supply unit (460) can resume the power supply when a predetermined key provided in the remote control device (200) is operated.

The storage unit (470) can store various types of programs, application data, etc. required for the control or operation of the remote control device (200). If the remote control device (200) wirelessly transmits and receives signals through the image display device (100) and the RF module (421), the remote control device (200) and the image display device (100) transmit and receive signals through a predetermined frequency band. The control unit (480) of the remote control device (200) can store and refer to information about the frequency band, etc., that can wirelessly transmit and receive signals between the remote control device (200) and the paired image display device (100).

The control unit (480) controls all matters related to the control of the remote control device (200). The control unit (480) can transmit a signal corresponding to a predetermined key operation of the user input unit (435) or a signal corresponding to the movement of the remote control device (200) sensed by the sensor unit (440) to the image display device (100) through the wireless communication unit (425).

The user input interface unit (150) of the video display device (100) may be equipped with a wireless communication unit (151) capable of wirelessly transmitting and receiving signals with a remote control device (200), and a coordinate value calculation unit (415) capable of calculating the coordinate values of a pointer corresponding to the operation of the remote control device (200).

The user input interface unit (150) can wirelessly transmit and receive signals with the remote control device (200) through the RF module (412). In addition, it can receive signals transmitted by the remote control device (200) according to the IR communication standard through the IR module (413).

The coordinate value calculation unit (415) can calculate the coordinate value (x, y) of the pointer (202) to be displayed on the display (170) by correcting hand shake or error from a signal corresponding to the operation of the remote control device (200) received through the wireless communication unit (151).

A transmission signal of a remote control device (200) input to the image display device (100) through the user input interface unit (150) is transmitted to a signal processing device (180) of the image display device (100). The signal processing device (180) can determine information about the operation and key operation of the remote control device (200) from the signal transmitted from the remote control device (200) and control the image display device (100) in response thereto.

As another example, the remote control device (200) can calculate the pointer coordinate values corresponding to the operation and output them to the user input interface unit (150) of the image display device (100). In this case, the user input interface unit (150) of the image display device (100) can transmit information about the received pointer coordinate values to the signal processing device (180) without a separate hand shake or error correction process.

In addition, as another example, the coordinate value calculation unit (415) may be provided inside the signal processing device (170) rather than the user input interface unit (150), unlike in the drawing.

Figure 5 is an internal block diagram of the display of Figure 2.

Referring to the drawing, the display (180) may include an organic light-emitting panel (210), a first interface unit (230), a second interface unit (231), a timing controller (232), a gate driver (234), a data driver (236), a memory (240), a processor (270), a power supply unit (290), a current detector (510), etc.

The display (180) receives a video signal (Vd), a first DC power source (V1) and a second DC power source (V2), and can display a predetermined video based on the video signal (Vd).

Meanwhile, the first interface unit (230) within the display (180) can receive a video signal (Vd) and a first direct current power source (V1) from a signal processing device (170).

Here, the first DC power supply (V1) can be used for the operation of the power supply unit (290) within the display (180) and the timing controller (232).

Next, the second interface unit (231) can receive a second DC power supply (V2) from an external power supply unit (190). Meanwhile, the second DC power supply (V2) can be input to a data driving unit (236) within the display (180).

The timing controller (232) can output a data driving signal (Sda) and a gate driving signal (Sga) based on the image signal (Vd).

For example, when the first interface unit (230) converts an input image signal (Vd) and outputs a converted image signal (va1), the timing controller (232) can output a data driving signal (Sda) and a gate driving signal (Sga) based on the converted image signal (va1).

The timing controller (232) can receive, in addition to the video signal (Vd) from the signal processing device (170), a control signal, a vertical synchronization signal (Vsync), etc.

In addition, the timing controller (232) can output a gate drive signal (Sga) for operation of the gate drive unit (234) and a data drive signal (Sda) for operation of the data drive unit (236) based on a control signal, a vertical synchronization signal (Vsync), etc., in addition to a video signal (Vd).

The data driving signal (Sda) at this time may be a data driving signal for driving RGBW subpixels when the panel (210) has RGBW subpixels.

Meanwhile, the timing controller (232) can further output a control signal (Cs) to the gate driver (234).

The gate driving unit (234) and the data driving unit (236) supply a scan signal and an image signal to the organic light-emitting panel (210) through the gate line (GL) and the data line (DL), respectively, in accordance with the gate driving signal (Sga) and the data driving signal (Sda) from the timing controller (232). Accordingly, the organic light-emitting panel (210) displays a predetermined image.

Meanwhile, the organic light-emitting panel (210) may include an organic light-emitting layer, and in order to display an image, a plurality of gate lines (GL) and data lines (DL) may be arranged in a matrix form to cross each pixel corresponding to the organic light-emitting layer.

Meanwhile, the data driving unit (236) can output a data signal to the organic light-emitting panel (210) based on the second direct current power supply (V2) from the second interface unit (231).

The power supply unit (290) can supply various power sources to the gate driver (234), data driver (236), timing controller (232), etc.

The current detection unit (510) can detect the current flowing in the subpixel of the organic light-emitting panel (210). The detected current can be input to a processor (270), etc., for cumulative current calculation.

The processor (270) can perform various controls within the display (180). For example, it can control the gate driver (234), the data driver (236), the timing controller (232), etc.

Meanwhile, the processor (270) can receive information on current flowing in the subpixel of the organic light-emitting panel (210) from the current detection unit (510).

And, the processor (270) can calculate the accumulated current of each sub-pixel of the organic light-emitting panel (210) based on the current information flowing in the sub-pixel of the organic light-emitting panel (210). The calculated accumulated current can be stored in the memory (240).

Meanwhile, the processor (270) can determine that burn-in has occurred if the accumulated current of the sub-pixels of each organic light-emitting panel (210) exceeds the allowable value.

For example, the processor (270) may determine that a subpixel of each organic light-emitting panel (210) has a burn-in status if the accumulated current of the subpixel is 300,000 A or more.

Meanwhile, the processor (270) may determine that a subpixel among the subpixels of each organic light-emitting panel (210) is a subpixel predicted to be subject to burn-in if the accumulated current of the subpixel approaches an allowable value.

Meanwhile, the processor (270) can determine the subpixel with the largest accumulated current as the burn-in prediction subpixel based on the current detected by the current detection unit (510).

FIGS. 6A and 6B are drawings for reference in the description of the organic light-emitting panel of FIG. 5.

First, Fig. 6a is a drawing illustrating pixels within an organic light-emitting panel (210).

Referring to the drawing, the organic light-emitting panel (210) may have a plurality of scan lines (Scan 1 to Scan n) and a plurality of data lines (R1, G1, B1, W1 to Rm, Gm, Bm, Wm) intersecting therewith.

Meanwhile, a pixel (subpixel) is defined in the intersection area of the scan line and the data line within the organic light-emitting panel (210). In the drawing, a pixel having RGBW subpixels (SR1, SG1, SB1, SW1) is illustrated.

FIG. 6b illustrates a circuit of one sub-pixel within a pixel of the organic light-emitting panel of FIG. 6a.

Referring to the drawing, the organic light-emitting sub-pixel circuit (CRTm) may be an active type and include a scan switching element (SW1), a storage capacitor (Cst), a driving switching element (SW2), and an organic light-emitting layer (OLED).

The scan switching element (SW1) is turned on according to the input scan signal (Vdscan) by connecting a scan line to the gate terminal. When turned on, the input data signal (Vdata) is transmitted to the gate terminal of the driving switching element (SW2) or one end of the storage capacitor (Cst).

The storage capacitor (Cst) is formed between the gate terminal and the source terminal of the driving switching element (SW2), and stores a predetermined difference between the data signal level transmitted to one end of the storage capacitor (Cst) and the DC power supply (VDD) level transmitted to the other end of the storage capacitor (Cst).

For example, if the data signal has different levels according to the PAM (Plus Amplitude Modulation) method, the power level stored in the storage capacitor (Cst) changes depending on the level difference of the data signal (Vdata).

As another example, when the data signal has different pulse widths according to the PWM (Pulse Width Modulation) method, the power level stored in the storage capacitor (Cst) changes depending on the difference in the pulse width of the data signal (Vdata).

The driving switching element (SW2) is turned on according to the power level stored in the storage capacitor (Cst). When the driving switching element (SW2) is turned on, a driving current (IOLED) proportional to the stored power level flows to the organic light-emitting layer (OLED). Accordingly, the organic light-emitting layer (OLED) performs a light-emitting operation.

The organic light-emitting layer (OLED) includes an RGBW emission layer (EML) corresponding to the sub-pixel, and may include at least one of a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and an electron injection layer (EIL), and may also include a hole blocking layer.

Meanwhile, sub-pixels all emit white light from the organic light-emitting layer (OLED), but green, red, and blue sub-pixels are provided with separate color filters to implement colors. That is, green, red, and blue sub-pixels each additionally have green, red, and blue color filters. Meanwhile, white sub-pixels emit white light, so they do not require separate color filters.

Meanwhile, in the drawing, a case is exemplified where a p-type MOSFET is used as the scan switching element (SW1) and the driving switching element (SW2), but an n-type MOSFET, or other switching elements such as a JFET, IGBT, or SIC may also be used.

Meanwhile, a pixel is a hold-type element that continues to emit light from an organic light-emitting layer (OLED) after a scan signal is applied during a unit display period, specifically, during a unit frame.

FIG. 7 is a drawing referenced in the description of the communication device and the second communication device of FIG. 2.

Referring to the drawing, the communication device (160a) may be equipped with a 2*2 based MIMO (multiple-input and multiple-output) antenna (ANTa1 to ANTa4) and a processor (165a).

The communication device (160a) can output multiple sector-specific beams based on 2*2-based MIMO antennas (ANTa1 to ANTa4).

The communication device (160a) can perform wireless communication based on the 802.11 ad/ay standard. Accordingly, media data can be transmitted stably wirelessly.

The processor (165a) may control, during a first period, to transmit a first signal based on a beam of a first shape with a sequentially variable sector, during a second period, to receive, from the display device (50), a second signal based on a beam of the first shape, during a third period, based on a selection of a wireless media device (300) of the display device (50), to approve an association with the display device (50) based on network address information in the second signal, during a fourth period, to transmit, during a fifth period, a third signal based on a beam of the second shape with a smaller angle than that of the first shape, and to perform wireless media transmission to the display device (50) based on a beam of the second shape, during a sixth period.

Meanwhile, the second communication device (160b) may be equipped with a 2*2 based MIMO antenna (ANTb1 to ANTb4) and a second processor (165b).

The second communication device (160b) can output multiple sector-specific beams based on 2*2-based MIMO antennas (ANTb1 to ANTb4).

The second communication device (160b) can perform wireless communication based on the 802.11 ad/ay standard.

The second processor (165b) may control, during a first period, to receive a first signal based on a beam of a first shape with a sequentially variable sector, select a wireless media device (300) based on the first signal, during a second period, to transmit a second signal based on a beam of the first shape including network address information, during a third period, to approve an association with the wireless media device (300), receive, during a fifth period, a third signal based on a beam of the second shape with a smaller angle than the first shape, and, during a sixth period, to display an image on a display based on the wireless media reception based on the beam of the second shape.

Figure 8 is a flowchart showing the operation of a communication device related to the present disclosure.

Referring to the drawings, a communication device (160a) related to the present disclosure transmits a first signal based on a beam of a first shape with a sequentially variable sector during a first period (S810), receives a second signal based on a beam of the first shape from the display device (50) during a third period (S830) according to a selection of a wireless media device (300) of the display device (50) during a second period (S820), approves an association with the display device (50) based on network address information in the second signal during a fourth period (S840), transmits a third signal based on a beam of the second shape with a smaller angle than the first shape during a fifth period (S850), and performs wireless media transmission to the display device (50) based on the beam of the second shape during a sixth period (S860).

Meanwhile, the communication device (160a) related to the present disclosure determines whether an error occurs during wireless media transmission (S870), and if no error occurs, continues to perform wireless media transmission to the display device (50) based on the second shape beam, and if an error occurs, performs the first to sixth periods (S810 to S860) again.

Meanwhile, when an error occurs, if the first to sixth periods (S810 to S860) are performed again, it takes a considerable amount of time, so when transmitting media data for which real-time transmission is important, the screen displayed on the display (180) may be cut off, a broken screen may be displayed, the sound output from the audio output unit (185) may be distorted, or various noises (e.g., pop noise) may occur.

Accordingly, in this disclosure, the state of the wireless environment between the wireless media device (300) and the display device (50) is identified and a recovery session is proposed by dividing it into each state.

In particular, when an error occurs, instead of unconditionally re-performing the first to sixth periods (S810 to S860), a method is proposed to drastically reduce the screen recovery latency (jLatency) by re-performing some periods depending on the error range. This is described with reference to Fig. 9 and below.

FIG. 9 is a flowchart showing the operation of an image display device according to an embodiment of the present disclosure.

Referring to the drawing, during a first period (S910), a communication device (160a) within a wireless media device (300) sequentially transmits a first signal based on a beam of a first shape in which sectors are varied. Meanwhile, the first period (S910) may be referred to as a scan period.

During the second period (S920), the second communication device (160b) within the display device (50) selects one of the received multiple beams. Meanwhile, the second period (S920) may be named a basic service set (BSS) join period.

For example, during the second period (S920), the second communication device (160b) within the display device (50) may select a beam output from the wireless media device (300), rather than another wireless media device.

Meanwhile, during the second period (S920), the second communication device (160b) within the display device (50) extracts a beacon signal within the first signal based on the beam of the first shape, and based on the beacon signal, can roughly determine the location information of the wireless media device (300).

And, the second communication device (160b) within the display device (50) transmits a second signal based on a beam of the first shape. At this time, the second signal may include information related to the second communication device (160b). For example, the second signal may include sector information.

During a third period (S930) following the second period (S920), the communication device (160a) within the wireless media device (300) receives a second signal based on a first shape beam from the display device (50). Meanwhile, the third period (S930) may be named a sector level sweep (SLS) period.

Meanwhile, during the third period (S930), the communication device (160a) within the wireless media device (300) can select one sector among a plurality of sectors.

For example, during the third period (S930), the communication device (160a) within the wireless media device (300) may select one of the plurality of sectors based on the sector information within the second signal.

During a fourth period (S940) following the third period (S930), the communication device (160a) within the wireless media device (300) approves association with the display device (50) based on network address information (e.g., MAC address information) within the second signal. The fourth period (S940) may be referred to as an association period.

Meanwhile, during the fourth period (S940), the communication device (160a) within the wireless media device (300) can approve the association with the display device (50) based on the network address information and the communication possible channel information within the second signal.

During a fifth period (S950) following the fourth period (S940), the communication device (160a) within the wireless media device (300) transmits a third signal based on a beam of a second shape having a smaller angle than the first shape. The fifth period (S950) may be referred to as a MIMO beam forming period.

During the fifth period (S950), the communication device (160a) within the wireless media device (300) can select any one beam among a plurality of beams within the selected sector.

And, during the fifth period (S950), the communication device (160a) within the wireless media device (300) can output a second shape beam having a narrower beam width than the first shape, based on the selected sector.

During the sixth period (S960) following the fifth period (S950), wireless media transmission is performed to the display device (50) based on the second shape beam. The sixth period (S960) may be named a data transfer period.

Meanwhile, the communication device (160a) within the wireless media device (300) determines whether an error occurs during wireless media transmission (S970), and if no error occurs, controls the sixth period (S960) to be continuously performed, and if an error occurs, determines whether the range of the error is within the first range (S980).

Meanwhile, the communication device (160a) within the wireless media device (300) can determine an error or error range based on the degree of wireless data loss, such as CRC Rate and SNR.

The first error range at this time may be a range corresponding to 3 to 5% of the data being transmitted, but is not limited thereto and various variations are possible.

Meanwhile, the communication device (160a) within the wireless media device (300) controls to perform the fifth to sixth periods (S950 to S960) again if the range of the error is within the first error range, and controls to perform the first to sixth periods (S910 to S960) again if the range of the error is exceeded.

For example, if the range of error is approximately 4%, which is within the first error range, the communication device (160a) in the wireless media device (300) is controlled to perform the fifth period to the sixth period (S950 to S960) again.

That is, if the range of the error is within the first error range, the communication device (160a) within the wireless media device (300) can re-select the beam by performing the fifth to sixth periods (S950 to S960) again.

Compared to Fig. 8, if the range of errors is within the first error range, the range of errors is not large, so rather than re-performing the entire first to sixth periods (S910 to S960), by re-performing a part of the fifth to sixth periods (S950 to S960), error recovery can be performed efficiently.

Meanwhile, if the range of errors exceeds the first error range, for example, if it exceeds 10% of the transmitted data, it is desirable to perform the first to sixth periods (S910 to S960) again.

That is, if the range of errors exceeds the first error range, the communication device (160a) within the wireless media device (300) can perform the first period to the sixth period (S910 to S960) again to start over from device detection.

In this way, by differentiating the recovery process depending on the error range, efficient recovery is possible.

In particular, if the range of errors is within the first error range, the range of errors is not large, so the fifth to sixth periods (S950 to S960) are performed again, enabling quick error recovery. As a result, quick recovery is possible when an error occurs during wireless media transmission.

Meanwhile, with respect to FIG. 9, the second communication device (160b) in the display device (50) receives, during a first period (S910), a first signal based on a beam of a first shape with a sequentially variable sector, selects a wireless media device (300) based on the first signal during a second period (S920), transmits, during a third period (S930), a second signal based on a beam of the first shape including network address information, approves an association with the wireless media device (300) during a fourth period (S940), receives, during a fifth period (S950), a third signal based on a beam of the second shape with a smaller angle than the first shape, and during a sixth period (S960), displays an image on the display based on wireless media reception based on a beam of the second shape. Accordingly, the display device (50) can stably display an image.

Meanwhile, the second communication device (160b), when receiving wireless media, if the range of the error is within the first range, can perform the fifth to sixth periods (S950 to S960) again, and if it exceeds the first range, can perform the first to sixth periods (S910 to S960) again. Accordingly, when an error occurs during wireless media transmission, it is possible to quickly recover. In addition, by differentiating the recovery process depending on the error range, it is possible to efficiently recover.

Figure 10 is a drawing referenced in the description of Figure 9.

Referring to the drawings, FIG. 10 is a drawing illustrating a beamforming processor.

First, (a) of Fig. 10 exemplifies that a beam of a first shape with a sequentially variable sector is output from a communication device (160a), as in step 910 (S910). At this time, a second communication device (160b) can perform scanning.

Fig. 10 (b) illustrates that multiple beams are received by the second communication device (160b).

Fig. 10 (c) illustrates that a beam corresponding to one sector among a plurality of beams is output from a communication device (160a). In response, a second communication device (160b) receives the beam of the corresponding sector.

Fig. 10 (d) illustrates performing beam tracking in the second communication device (160b). The second communication device (160b) can select one of the plurality of beams received based on the intensity of the beam, etc.

FIG. 11 is a flowchart showing the operation of an image display device according to another embodiment of the present disclosure.

Referring to the drawings, steps 910 to 970 (S910 to S970) of the flowchart of Fig. 11 are identical to steps 910 to 970 (S910 to S970) of the flowchart of Fig. 9. Accordingly, the following description focuses on the differences from Fig. 9.

When an error occurs in step 970 (S970), the communication device (160a) in the wireless media device (300) can determine whether the range of the error is within the first range (S980b).

The first error range at this time may be a range corresponding to 3 to 5% of the data being transmitted, but is not limited thereto and various variations are possible.

Meanwhile, the communication device (160a) within the wireless media device (300) controls to perform the fifth to sixth periods (S950 to S960) again if the range of the error is within the first error range, and if it exceeds the first error range, it can additionally determine whether the range of the error is within the second range (S990b).

Meanwhile, the communication device (160a) within the wireless media device (300) controls to perform the third to sixth periods (S930 to S960) again if the error range is within the second error range, and controls to perform the first to sixth periods (S910 to S960) again if the error range exceeds the second error range.

For example, if the range of error is approximately 4%, which is within the first error range, the communication device (160a) in the wireless media device (300) is controlled to perform the fifth period to the sixth period (S950 to S960) again.

Compared to Fig. 8, if the range of errors is within the first error range, the range of errors is not large, so rather than re-performing the entire first to sixth periods (S910 to S960), by re-performing a part of the fifth to sixth periods (S950 to S960), error recovery can be performed efficiently.

Meanwhile, the second error range may be a range corresponding to 6 to 10% of the transmitted data, but is not limited thereto and various variations are possible.

When the range of error is approximately 7%, which is within the second range outside the first error range, the communication device (160a) in the wireless media device (300) is controlled to perform the third period to the sixth period (S930 to S960) again.

That is, if the range of the error is within the second error range, the communication device (160a) within the wireless media device (300) can perform sector re-selection by performing the third to sixth periods (S930 to S960) again.

Meanwhile, if the range of errors exceeds the second error range, for example, if it exceeds 10% of the transmitted data, it is desirable to perform the first to sixth periods (S910 to S960) again.

In this way, by differentiating the recovery process depending on the error range, errors can be recovered efficiently and quickly.

Finally, the communication device (160a), depending on the range of the error during wireless media transmission, performs the fifth to sixth periods (S950 to S960) again, the third to sixth periods (S930 to S960) again, or the first to sixth periods (S910 to S960) again. Accordingly, when an error occurs during wireless media transmission, it is possible to quickly recover. In addition, by differentiating the recovery process depending on the range of the error, it is possible to efficiently recover.

Meanwhile, the second communication device (160b), when receiving wireless media, if the range of the error is within the first range, performs the fifth to sixth periods (S950 to S960) again, and if the range of the error exceeds the first range and is within the second range, performs the third to sixth periods (S930 to S960) again, and if it exceeds the second range, performs the first to sixth periods (S910 to S960) again. Accordingly, when an error occurs during wireless media transmission, it becomes possible to quickly recover. In addition, by differentiating the recovery process depending on the error range, it becomes possible to efficiently recover.

FIG. 12 is a flowchart showing the operation of an image display device according to another embodiment of the present disclosure.

Steps 910 to 970 (S910 to S970) of the flowchart of Fig. 12 are identical to steps 910 to 970 (S910 to S970) of the flowchart of Fig. 9. Accordingly, the following description focuses on the differences from Fig. 9.

When an error occurs in step 970 (S970), the communication device (160a) in the wireless media device (300) can determine whether the range of the error is within the first range (S980c).

The first error range at this time may be a range corresponding to 3 to 5% of the data being transmitted, but is not limited thereto and various variations are possible.

Meanwhile, the communication device (160a) within the wireless media device (300) controls to perform the third period to the sixth period (S930 to S960) again if the range of the error is within the first error range, and controls to perform the first period to the sixth period (S910 to S960) again if the range of the error is exceeded.

For example, if the range of error is approximately 4%, which is within the first error range, the communication device (160a) in the wireless media device (300) is controlled to perform the third period to the third period (S930 to S960) again.

Compared to Fig. 8, if the range of errors is within the first error range, the range of errors is not large, so rather than re-performing the entire first to sixth periods (S910 to S960), by re-performing a part of the third to sixth periods (S930 to S960), error recovery can be performed efficiently.

Meanwhile, if the range of errors exceeds the first error range, for example, if it exceeds 10% of the transmitted data, it is desirable to perform the first to sixth periods (S910 to S960) again.

In this way, by differentiating the recovery process depending on the error range, errors can be recovered efficiently and quickly.

Finally, the communication device (160a) performs the third to sixth periods (S930 to S960) again, or performs the first to sixth periods (S910 to S960) again, depending on the range of the error during wireless media transmission. Accordingly, when an error occurs during wireless media transmission, it is possible to quickly recover. In addition, by varying the recovery process depending on the range of the error, it is possible to efficiently recover.

Meanwhile, the second communication device (160b), when receiving wireless media, if the range of the error is within the first range, can perform the third to sixth periods (S930 to S960) again, and if it exceeds the first range, can perform the first to sixth periods (S910 to S960) again. Accordingly, when an error occurs during wireless media transmission, it is possible to quickly recover. In addition, by differentiating the recovery process depending on the error range, it is possible to efficiently recover.

Although the preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above, and various modifications may be made by a person skilled in the art without departing from the gist of the present disclosure as claimed in the claims, and such modifications should not be individually understood from the technical idea or prospect of the present disclosure.

Claims (11)

For wireless media devices,
A signal processing device that processes a video signal or audio signal;
A communication device for wirelessly transmitting a signal from the signal processing device to an external display device;
The above communication device,
During a first period, a first signal based on a beam of a first shape with a variable sector is transmitted sequentially, during a second period, depending on a selection of the wireless media device of the display device, during a third period, a second signal based on a beam of the first shape is received from the display device, during a fourth period, based on network address information in the second signal, an association with the display device is approved, during a fifth period, a third signal based on a beam of the second shape with a smaller angle than that of the first shape is transmitted, and during a sixth period, wireless media transmission to the display device is performed based on a beam of the second shape.
The above communication device,
A wireless media device that, when the range of the error in the wireless media transmission is within the first range, performs the fifth period to the sixth period again, and when the range is exceeded, performs the first period to the sixth period again. In the first paragraph,
The above communication device,
During the above third period, select one sector among multiple sectors,
During the fourth period, control data is exchanged with the display device,
A wireless media device, wherein during the fifth period, any one beam among a plurality of beams within the selected sector is selected. In the first paragraph,
The above communication device,
A wireless media device having a 2*2 based MIMO antenna. For wireless media devices,
A signal processing device that processes a video signal or audio signal;
A communication device for wirelessly transmitting a signal from the signal processing device to an external display device;
The above communication device,
During a first period, a first signal based on a beam of a first shape with a variable sector is transmitted sequentially, during a second period, depending on a selection of the wireless media device of the display device, during a third period, a second signal based on a beam of the first shape is received from the display device, during a fourth period, based on network address information in the second signal, an association with the display device is approved, during a fifth period, a third signal based on a beam of the second shape with a smaller angle than that of the first shape is transmitted, and during a sixth period, wireless media transmission to the display device is performed based on a beam of the second shape.
The above communication device,
A wireless media device wherein, when the range of the error during the wireless media transmission is within the first range, the fifth period to the sixth period are performed again, and when the range of the error exceeds the first range and is within the second range, the third period to the sixth period are performed again, and when it exceeds the second range, the first period to the sixth period are performed again. For wireless media devices,
A signal processing device that processes a video signal or audio signal;
A communication device for wirelessly transmitting a signal from the signal processing device to an external display device;
The above communication device,
During a first period, a first signal based on a beam of a first shape with a variable sector is transmitted sequentially, during a second period, depending on a selection of the wireless media device of the display device, during a third period, a second signal based on a beam of the first shape is received from the display device, during a fourth period, based on network address information in the second signal, an association with the display device is approved, during a fifth period, a third signal based on a beam of the second shape with a smaller angle than that of the first shape is transmitted, and during a sixth period, wireless media transmission to the display device is performed based on a beam of the second shape.
The above communication device,
A wireless media device that, when the range of the error in the wireless media transmission is within the first range, performs the third period to the sixth period again, and when the range is exceeded, performs the first period to the sixth period again. display device;
A video display device comprising a wireless media device according to any one of claims 1 to 5. In Article 6,
The above display device,
display;
An image display device comprising a second communication device that performs wireless communication with the wireless media device. In Article 7,
The second communication device,
An image display device, which receives, during a first period, a first signal based on a beam of a first shape with a sequentially variable sector, selects the wireless media device based on the first signal, during a second period, transmits, during a third period, a second signal based on the beam of the first shape including network address information, approves an association with the wireless media device, during a fifth period, receives, during a sixth period, a third signal based on a beam of the second shape with a smaller angle than that of the first shape, and displays an image on the display based on the wireless media reception based on the beam of the second shape. In Article 7,
The second communication device,
A video display device, wherein, when receiving the wireless media, if the range of the error is within the first range, the fifth period to the sixth period are performed again, and if it exceeds the first range, the first period to the sixth period are performed again. In Article 7,
The second communication device,
A video display device, wherein, when receiving the wireless media, if the range of the error is within the first range, the fifth period to the sixth period are performed again, if the range of the error exceeds the first range and is within the second range, the third period to the sixth period are performed again, and if it exceeds the second range, the first period to the sixth period are performed again. In Article 7,
The second communication device,
A video display device, wherein, when receiving the wireless media, if the range of the error is within the first range, the third period to the sixth period are performed again, and if it exceeds the first range, the first period to the sixth period are performed again.

Images