JP2015055845A - Display unit and display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display unit and a display method that can automatically set a display of video in a proper state.SOLUTION: A display unit includes: an acquisition part which acquires video data transmitted in a multi-stream manner; a display part which displays video on the basis of the acquired video data; a storage part which stores characteristic information associated with characteristics of the video data; an output part which outputs the acquired video data to external display equipment; a determination part which determines whether characteristic information of video data included in each acquired stream matches the characteristic information stored in the storage part; and a display control part which performs control to display video based upon video data included in stream at the display part or at both the display part and display equipment according to the determination result.

Description

  The present invention relates to a display device and a display method for displaying video based on video data transmitted in multi-stream.

  Liquid crystal display interfaces include PC (personal computer) input and AV (audio / visual) input depending on the connected devices. For PC input, there are D-Sub with analog connection, DVI-I with both analog and digital, DVI-D with digital connection, etc. HDMI (Registration) for digital home appliances such as video equipment for AV input Trademark), and DisplayPort for PC input and AV input. DisplayPort is a video output interface standard designed for digital display devices such as liquid crystal displays.

  The latest standard DisplayPort Version 1.2 supports MST (Multi-Stream Transport) and displays multiple images based on video data transmitted in multiple streams using a single cable. It can be displayed on the device. In addition, as an apparatus compatible with multi-stream, a technique is disclosed in which a plurality of transport streams can be received and displayed by a plurality of receiving apparatuses (see Patent Document 1).

  Using the video data transmitted in multi-stream, for example, the display screen of the display device is divided into two and the video based on the video data of each stream is displayed on each divided screen, thereby doubling the video resolution. Can be displayed. In addition, a connector for outputting video data may be provided on the display device so that it can be displayed on another display device.

JP 2008-172391 A

  However, in the case of the conventional technology, the setting of whether to display the video by dividing the display screen of the display device into two parts, or to display the video using an external display device, depends on the respective display device, display device, and video data. Therefore, it is necessary to perform the setting manually in a source device (for example, a personal computer) that sends the message, and the setting operation is complicated, and improvement in convenience is desired.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a display device and a display method capable of automatically setting an image display to an optimum state.

  A display device according to the present invention includes an acquisition unit that acquires video data transmitted in a multi-stream, a display unit that displays video based on the video data acquired by the acquisition unit, and characteristic information regarding characteristics of the video data. A storage unit for storing, an output unit for outputting video data acquired by the acquisition unit to an external display device, and a characteristic for storing characteristic information of video data included in each stream acquired by the acquisition unit in the storage unit A determination unit that determines whether or not the information matches the information, and a video based on the video data included in each stream is displayed on the display unit or the display unit and the display device according to a determination result in the determination unit. And a display control unit that controls to display the both.

  In the display device according to the present invention, the display unit divides the video into a plurality of screens for display, and the display control unit receives the characteristic information of the video data included in the multi-stream in the determination unit. When it is determined that they match, the video based on the video data included in the multi-stream is controlled to be displayed on each screen of the display unit for each stream.

  In the display device according to the present invention, when the number of multi-streams exceeds the number of divided screens of the display unit, the display control unit displays video based on video data included in the excess streams on the display device. It is characterized by being controlled as much as possible.

  In the display device according to the present invention, when the display control unit determines that the characteristic information of the video data included in the multi-stream does not match in the determination unit, the video data included in one stream of the multi-stream The video based on the above is controlled to be displayed on the display unit.

  In the display device according to the present invention, the display control unit controls the display device to display video based on video data included in other streams other than the one stream of the multi-stream. It is characterized by being.

  In the display device according to the present invention, the storage unit stores a resolution as the characteristic information.

  The display method according to the present invention stores characteristic information relating to characteristics of video data in a storage unit, acquires video data transmitted in a multi-stream, and displays a video based on the acquired video data. Whether to display the acquired video data to an external display device, and whether the acquired video data characteristic information included in each stream matches the characteristic information stored in the storage unit And controlling to display video based on video data included in each stream on the display unit or both the display unit and the display device according to a determination result in the determination step. And a step.

  According to the present invention, video display can be automatically set to an optimum state.

It is a block diagram which shows an example of a structure of the display apparatus of this Embodiment. It is a schematic diagram which shows an example of the signal transmitted by multi stream. It is explanatory drawing which shows an example of the characteristic information memorize | stored in the memory | storage part. It is explanatory drawing which shows the 1st Example of the display by the display apparatus of this Embodiment. It is explanatory drawing which shows the 2nd Example of the display by the display apparatus of this Embodiment. It is a flowchart which shows an example of the process of the display destination determination by the display apparatus of this Embodiment.

  Hereinafter, the present invention will be described with reference to the drawings illustrating embodiments. FIG. 1 is a block diagram showing an example of the configuration of the display device 100 of the present embodiment. The display device 100 according to the present embodiment includes a control unit 10 that controls the entire display device 100, a display unit 14 such as a liquid crystal display, display drive units 15 and 16, a signal input unit 17, a signal output unit 18, a storage unit 19, and the like. Is provided. The control unit 10 includes an input / output signal processing unit 11, an output signal processing unit 12, a display destination determination unit 13, and the like.

  A source device such as a personal computer 200 (hereinafter referred to as “PC”) is connected to the display device 100. The PC 200 is a device compatible with DisplayPort Version 1.2, and can output a signal transmitted in multiple streams from one signal output unit. The PC 200 may be configured to include a plurality of signal output units.

  In addition, one or a plurality of external display devices 300 are connected to the display device 100. The display device 300 has the same configuration as the display device 100.

  The signal input unit 17 has a function as an acquisition unit, and acquires a signal (input signal) output from the PC 200 and transmitted in multi-stream. That is, the signal input unit 17 can acquire an MST (Multi-Stream Transport) signal corresponding to DisplayPort Version 1.2.

  FIG. 2 is a schematic diagram illustrating an example of a signal transmitted in multi-stream. In DisplayPort Version 1.2, MST (Multi-Stream Transport) is supported. As shown in FIG. 2, in multi-stream, for example, video resolution, frame rate (frequency), video data, audio data, AUX channel data, etc. are assigned to one stream number (eg, stream ID, address, etc.). Packets are generated, and signals including video data and the like are transmitted in each stream. Note that the example of FIG. 2 schematically shows a data format and may be different from an actual signal.

  The signal output unit 18 has a function as an output unit, and outputs an input signal including video data acquired by the signal input unit 17 to the display device 300 under the control of the control unit 10. That is, the signal output unit 18 can output an MST (Multi-Stream Transport) signal corresponding to the DisplayPort Version 1.2. Further, the signal output unit 18 can detect whether or not the output destination display device 300 is connected.

  The display unit 14 displays a video based on the video data acquired by the signal input unit 17. The display unit 14 is driven by, for example, two display driving units 15 and 16. More specifically, the display unit 14 divides and displays the video on a plurality of screens. In the example of FIG. 1, the display unit 14 can be divided into a screen A and a screen B. The display driving unit 15 drives the display unit 14 to display the video on the screen A, and the display driving unit 16 drives the display unit 14 to display the video on the screen B independently of the display driving unit 15. To do.

  The storage unit 19 stores characteristic information regarding the characteristics of the video data. The characteristic information includes, for example, video resolution, frequency (frame rate), and the like. That is, the storage unit 19 stores, as characteristic information, the resolution and frequency of video that can be displayed on each divided screen when the display unit 14 is divided into a plurality of screens.

  FIG. 3 is an explanatory diagram illustrating an example of the characteristic information stored in the storage unit 19. As shown in FIG. 3, the storage unit 19 can store the resolution and frequency of video that can be displayed on each divided screen as characteristic information. For example, as illustrated in FIG. 3, 1920 × 2160, 60 Hz is stored in the storage unit 19 as the characteristic information. This means that the display drive unit 15 drives the display unit 14 to display 1920 × 2160, 60 Hz video on one screen A of the display unit 14 and displays 1920 × 2160, 60 Hz video on the other screen B. In other words, the entire screen of the display unit 14 can display 3840 × 2160, 60 Hz video with double the resolution. The same applies to other characteristic information such as 1920 × 2160, 50 Hz.

  The input signal processing unit 11 decodes video data, audio data, AUX channel data, and the like from the input signal acquired by the signal input unit 17 and performs a pre-stage process for a subsequent display process.

  The display destination determination unit 13 has a function as a determination unit, and determines whether or not the characteristic information of the video data included in each acquired stream matches the characteristic information stored in the storage unit 19. When the characteristic information stored in the storage unit 19 is, for example, 1920 × 2160, 60 Hz, the resolution and frequency of the video data (video) included in each stream of the multi-stream are 1920 × 2160, 60 Hz. It is determined that the information matches.

  In addition, the display destination determination unit 13 has a function as a display control unit, and displays video based on video data included in each stream according to a determination result in the display destination determination unit 13. 14 and the display device 300 are controlled to be displayed. That is, the display destination determination unit 13 determines whether or not the resolution of the input video data (video) matches the resolution stored in the storage unit 19. And when it corresponds with the resolution memorize | stored in the memory | storage part 19, ie, when it corresponds with the resolution which performs only the internal display in the display apparatus 100, the display process for the internal display in the screen A of the display part 14 and the screen B is performed. Do. Further, when the display destination determination unit 13 does not match the resolution stored in the storage unit 19, the display destination determination unit 13 switches the display destination so that the internal display by the display unit 14 and the external display by the display device 300 are simultaneously performed.

  The output signal processing unit 12 sends an input signal to the signal output unit 18 in accordance with the processing of the display destination determination unit 13.

  As described above, whether the video is displayed on the display unit 14 of the display device 100 according to the match or mismatch between the characteristic information of the video data included in each stream and the pre-stored characteristic information (whether only internal display is performed) Alternatively, it is possible to automatically set whether to display an image using the external display device 300 (whether the internal display and the external display are performed simultaneously). Therefore, the video display can be optimized.

  Next, when only the internal display is performed, that is, when the video is displayed on the display unit 14 of the display device 100, and when the internal display and the external display are performed simultaneously, that is, the display unit 14 of the display device 100 and the external display device. A case where video is simultaneously displayed on 300 will be described.

  FIG. 4 is an explanatory diagram showing a first example of display by the display device 100 of the present embodiment. FIG. 4 shows an example of internal display by the display device 100. As shown in FIG. 4, it is assumed that the input signal from the PC 200 includes video data having a resolution and frequency of 1920 × 2160 @ 60 Hz in two streams (streams 1 and 2). As illustrated in FIG. 3, since the resolution and frequency of 1920 × 2160 @ 60 Hz match the resolution and frequency stored in the storage unit 19, the display device 100 is transmitted in two streams (streams 1 and 2). Each video based on the video data is displayed on the screen A and the screen B of the display unit 14. As a result, the entire screen of the display unit 14 can be displayed with a resolution twice the resolution of the input video. In this way, when video data transmitted in a multi-stream can be displayed on a divided screen of the display unit 14, it is automatically set so that a video for each stream is displayed on each divided screen. be able to.

  In the example of FIG. 4, the number of multi-stream streams is 2, but the number of streams is not limited to 2, and may be 3 or more.

  For example, when the number of multi-streams exceeds the number of divided screens of the display unit 14, the display destination determination unit 13 controls to display video based on video data included in the excess stream on the external display device 300. . For example, as shown in FIG. 4, when the number of divided screens of the display unit 14 is 2, and the number of multi-stream streams is 3 or more, each video data included in the two streams is displayed. The video data that is internally displayed on each of the two screens of the unit 14 and included in the remaining third or more streams can be automatically set to be externally displayed on one or more external display devices 300. .

  FIG. 5 is an explanatory diagram showing a second example of display by the display device 100 of the present embodiment. FIG. 5 shows an example of internal display and external display by the display device 100. As shown in FIG. 5, it is assumed that the input signal from the PC 200 includes video data having a resolution and a frequency of 3840 × 2160 @ 30 Hz in two streams (streams 1 and 2). As illustrated in FIG. 3, the resolution and frequency of 3840 × 2160 @ 30 Hz do not match the resolution and frequency stored in the storage unit 19.

  The resolution and frequency that can be divided and stored in the storage unit 19 are to improve the resolution of the entire display unit 14 by, for example, dividing the display unit 14 of the display device 100 into two parts and performing individual display control. The resolution and frequency stored in the storage unit 19 store characteristic information capable of MST display that can be displayed by dividing the screen of the display unit 14, for example, display limits specific to the display screen It is different from the resolution and frequency indicating the value. Therefore, as shown in FIG. 5, even when video data having a resolution and frequency different from the resolution and frequency stored in the storage unit 19 is input, it can be displayed on the display unit 14.

  That is, when the display destination determination unit 13 determines that the characteristic information of the video data included in the multi-stream does not match, the display destination determination unit 13 displays the video based on the video data included in one of the multi-streams on the display unit 14. Control as much as possible.

  In the example of FIG. 5, it is assumed that the characteristic information stored in the storage unit 19 is 1920 × 2160, 60 Hz, and the display unit 14 can divide and display an image on two screens. If the characteristic information of the video data included in the multi-stream is 3840 × 2160, 30 Hz as shown in FIG. 5, the characteristic information does not match. Therefore, instead of displaying the video based on the video data included in one of the multi-streams on the display unit 14 by dividing the screen, the entire display unit 14 is displayed as one screen. As a result, even when video data that cannot be divided and displayed on the display unit 14 is acquired, it is automatically set to display video based on video data included in one of the multi-streams. can do.

  In addition, the display destination determination unit 13 controls the display device 300 to display video based on video data included in other streams other than one of the multi-streams. In the example of FIG. 5, of the two streams (streams 1 and 2), video based on video data included in stream 1 (main stream) is displayed on the display unit 14 of the display device 100, and the remaining stream 2 is displayed. Send to device 300. As a result, even when video data that cannot be divided and displayed on the display unit 14 is acquired, video based on video data included in other streams of the multi-stream is displayed on the external display device 300. Can be set automatically.

  In the above-described example, a resolution larger than the resolution stored in the storage unit 19 is given as an example of the resolution not stored in the storage unit 19. However, the present invention is not limited to this, and the resolution stored in the storage unit 19 The same is true for small resolutions.

  FIG. 6 is a flowchart illustrating an example of display destination determination processing by the display device 100 according to the present embodiment. In the following description, for the sake of convenience, the main body of processing is the control unit 10. The control unit 10 acquires an input signal (S11) and detects the number of multi-stream streams (S12). The control unit 10 determines whether or not the number of streams is 1 (S13). If the number of streams is 1 (YES in S13), the video of the stream is displayed on the entire display screen of the display unit 14 ( S14), the process is terminated.

  When the number of streams is not 1 (NO in S13), the control unit 10 detects the resolution of the video data of each stream (S15), and determines whether or not the detected resolution matches the resolution stored in the storage unit 19. (S16). Note that not only the resolution but also the frequency of the video can be determined.

  When the resolutions do not match (NO in S16), the control unit 10 displays the video of the main stream on the entire display screen of the display unit 14, and outputs the video data of the remaining stream to the external display device 300 (S17). The process is terminated.

  If the resolutions match (YES in S16), the control unit 10 determines whether the number of streams is 2 (S18). When the number of streams is 2 (YES in S18), the control unit 10 displays the video of each stream separately on the screen A and the screen B of the display unit 14 (S19), and ends the process. In step S19, only internal display is performed.

  When the number of streams is not 2 (NO in S18), that is, when the number of streams is 3 or more, the control unit 10 displays the video of the two streams separately on the screen A and the screen B of the display unit 14, and the remaining Are output to the external display device 300 (S20), and the process is terminated. By performing the process of step S20, both internal display and external display are performed simultaneously.

  As described above, whether to display a video on the display unit 14 of the display device 100 or to display a video using the external display device 300 can be automatically set based on the resolution of the video. .

  The display device (100) of the present embodiment includes an acquisition unit (17) that acquires video data transmitted in a multi-stream, and a display unit (14) that displays video based on the video data acquired by the acquisition unit. A storage unit (19) for storing characteristic information relating to the characteristics of the video data, an output unit (18) for outputting the video data acquired by the acquisition unit to an external display device, and each stream acquired by the acquisition unit A determination unit (13) for determining whether or not the characteristic information of the video data included in the image data matches the characteristic information stored in the storage unit, and included in each stream according to a determination result in the determination unit And a display control unit (13) for controlling to display video based on video data on the display unit or both the display unit and the display device (300).

  In the display method of the present embodiment, characteristic information relating to the characteristics of video data is stored in the storage unit (19), video data transmitted in a multi-stream is acquired, and based on the acquired video data The step of displaying the video on the display unit (14), the step of outputting the acquired video data to the external display device (300), and the characteristic information of the video data included in each acquired stream are stored in the storage unit. A step of determining whether or not the stored characteristic information matches, and a video based on the video data included in each stream is displayed on the display unit or the display unit and the display unit according to a determination result in the determination step And a step of controlling to display on both display devices.

  In the present embodiment, the acquisition unit (17) acquires video data transmitted in multi-stream. Multi-stream is a data transmission format based on MST (Multi-Stream Transport) supported by, for example, DisplayPort Version 1.2. Video data, audio data, and the like are displayed for each display device (display). Packets assigned with different addresses are generated and transmitted in respective streams. The display unit (14) displays a video based on the acquired video data. The output unit (18) outputs the acquired video data to the external display device (300).

  The storage unit (19) stores characteristic information regarding the characteristics of the video data. The characteristic information includes, for example, video resolution, frequency (frame rate), and the like. For example, the storage unit stores, as characteristic information, the resolution and frequency of video that can be displayed on each divided screen when the display unit is divided into a plurality of screens.

  The determination unit (13) determines whether or not the characteristic information of the video data included in each acquired stream matches the characteristic information stored in the storage unit. For example, when the characteristic information stored in the storage unit is 1920 × 2160, 60 Hz, the resolution and frequency of video data (video) included in each stream of the multi-stream are 1920 × 2160, 60 Hz. Are determined to match.

  The display control unit (13) controls to display the video based on the video data included in each stream on the display unit or both the display unit and the display device according to the determination result of the determination unit. As described above, video is displayed on the display unit of the display device according to the match or mismatch between the characteristic information of the video data included in each stream and the pre-stored characteristic information, or the video is also displayed using an external display device. Since it is possible to automatically set whether or not to display, there is no need to perform manual display setting, and the video display can be automatically optimized.

  In the display device of the present embodiment, the display unit (14) divides and displays the video on a plurality of screens, and the display control unit (13) When it is determined that the characteristic information of the video data included in the stream matches, the video based on the video data included in the multi-stream is controlled to be displayed on each screen of the display unit for each stream. And

  In the present embodiment, the display unit (14) divides and displays the video on a plurality of screens. In this case, the storage unit (19) can store the resolution and frequency of the video that can be displayed on each divided screen as the characteristic information. When the determination unit (13) determines that the characteristic information of the video data included in the multi-stream matches, the display control unit (13) displays the video based on the video data included in the multi-stream for each screen of the display unit. Control to display.

  For example, when the characteristic information stored in the storage unit (19) is 1920 × 2160, 60 Hz, and the display unit (14) is configured to display the video divided into two screens, the display unit 1920 × 2160, 60 Hz video can be displayed on the other screen, and 1920 × 2160, 60 Hz video can be displayed on other screens, and the resolution of the entire screen of the display unit is doubled, 3840 × 2160. , 60 Hz video can be displayed. Thus, when video data transmitted in multi-stream can be displayed on a divided screen of the display unit, it can be automatically set to display a video for each stream on each divided screen. it can.

  In the display device according to the present embodiment, the display control unit (13), when the number of multi-streams exceeds the number of divided screens of the display unit (14), is based on video data included in the excess stream. Control is performed to display the video on the display device (300).

  In the present embodiment, when the number of multi-streams exceeds the number of divided screens of the display unit (14), the display control unit (13) externally displays video based on video data included in the excess stream. Control to display on other display devices. For example, if the number of divided screens in the display unit is 2, and the number of multi-stream streams is 3, each video data included in the two streams is displayed on two screens of the display unit, and the remaining The video data included in the third stream can be automatically set to be displayed on the external display device (300).

  In the display device according to the present embodiment, when the display control unit (13) determines that the characteristic information of the video data included in the multi-stream does not match in the determination unit (13), one of the multi-streams is displayed. Control is performed so that video based on video data included in the stream is displayed on the display unit (14).

  In the present embodiment, when the determination unit (13) determines that the characteristic information of the video data included in the multi-stream does not match, the display control unit (13) sets one of the multi-streams. Control is performed to display a video based on the included video data on the display unit (14).

  For example, it is assumed that the characteristic information stored in the storage unit (19) is 1920 × 2160, 60 Hz, and the display unit (14) can divide and display an image on two screens. For example, if the characteristic information of the video data included in the multi-stream is 3840 × 2160, 30 Hz, the characteristic information does not match. Therefore, the video based on the video data included in one of the multi-streams is not displayed by dividing the screen on the display unit, but the entire display unit is displayed as one screen. As a result, even when video data that cannot be divided and displayed on the display unit is acquired, it is automatically set to display video based on video data included in one of the multi-streams. be able to.

  In the display device according to the present embodiment, the display control unit (13) displays, on the display device (300), video based on video data included in other streams other than the one stream of the multi-streams. It is characterized by being controlled as much as possible.

  In the present embodiment, the display control unit (13) controls to display on the display device (300) video based on video data included in other streams other than one of the multi-streams. . As a result, even when video data that cannot be divided and displayed on the display unit (14) is acquired, video based on video data included in other streams of the multi-stream is displayed on an external display device. Can be set automatically.

  The display device according to the present embodiment is characterized in that the storage unit (19) stores resolution as the characteristic information.

  In this embodiment, it is possible to automatically set whether to display video on the display unit of the display device or to display video using an external display device based on the resolution of the video. .

DESCRIPTION OF SYMBOLS 100 Display apparatus 10 Control part 11 Input signal processing part 12 Output signal processing part 13 Display destination determination part 14 Display part 15, 16 Display drive part 17 Signal input part 18 Signal output part 19 Storage part 200 PC
300 Display device

Claims (7)

An acquisition unit for acquiring video data transmitted in a multi-stream;
A display unit for displaying video based on the video data acquired by the acquisition unit;
A storage unit for storing characteristic information relating to characteristics of video data;
An output unit that outputs the video data acquired by the acquisition unit to an external display device;
A determination unit that determines whether or not the characteristic information of the video data included in each stream acquired by the acquisition unit matches the characteristic information stored in the storage unit;
A display control unit that controls to display video based on video data included in each stream on the display unit or both the display unit and the display device according to a determination result in the determination unit. A display device. The display unit
The video is divided and displayed on multiple screens.
The display control unit
When the determination unit determines that the characteristic information of the video data included in the multi-stream matches, control is performed so that video based on the video data included in the multi-stream is displayed on each screen of the display unit for each stream. The display device according to claim 1, wherein the display device is a display device. The display control unit
When the number of multi-streams exceeds the number of divided screens of the display unit, control is performed so that video based on video data included in the excess streams is displayed on the display device. Item 3. The display device according to Item 2. The display control unit
When the determination unit determines that the characteristic information of the video data included in the multi-stream does not match, control is performed to display a video based on the video data included in one of the multi-streams on the display unit. The display device according to any one of claims 1 to 3, wherein the display device is configured as described above. The display control unit
5. The display device according to claim 4, wherein control is performed so that video based on video data included in another stream excluding the one stream of the multi-stream is displayed on the display device. . The storage unit
6. The display device according to claim 1, wherein a resolution is stored as the characteristic information. Store characteristic information on the characteristics of video data in the storage unit,
Obtaining video data transmitted in multi-stream;
Displaying the video on the display unit based on the acquired video data;
Outputting the acquired video data to an external display device;
Determining whether the characteristic information of the video data included in each acquired stream matches the characteristic information stored in the storage unit;
Controlling to display video based on video data included in each stream on the display unit or both the display unit and the display device according to a determination result in the determination step. Characteristic display method.

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