JP2008085703A - Display unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable list display of conditions of connection devices only by displaying an input switching menu. <P>SOLUTION: While a device is connected to a display unit, only by displaying the input switching menu, condition information of the connected device can be confirmed. In such a case, an indication representing the condition information of the device is performed on a display section of an input source of the input switching menu by a predetermined method. In the illustrated embodiment, characters of "INPUT1" are grayed out to indicate that a corresponding connection device is powered off, and a rectangular mark is displayed at "INPUT2" to indicate that a corresponding connection device is stopped. Furthermore, a circular mark is displayed at "1394" and a character color is changed into red to indicate that an IEEE1394 enabled device is under video recording. The condition information of connection devices is acquired by an IEEE1394 interface connected to the display unit, or acquired using a CEC command in an HDMI interface. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a display device, and more particularly, to a display device that can be connected to a device such as a DVD playback device through a digital interface such as IEEE 1394 or HDMI (High Definition Multimedia Interface).

  A configuration in which a plurality of external devices such as a DVD player and an HDD recorder are connected to a display device such as a television device is usually used. In order to perform input switching of external devices in such a system configuration, the display device has a normal input switching menu so that inputs from a plurality of external devices connected to the display device can be arbitrarily switched. Yes. Usually, the user displays an input switching menu on the display screen of the display device, confirms selectable inputs, and selects an arbitrary input source (external device).

  As a technique for displaying the connection status of an external device in such a system, for example, Patent Document 1 discloses not only information relating to an input video signal such as a channel number and an external input terminal, but also a remaining capacity of an external memory, a recording status, etc. A video display device that can easily check the state information is disclosed. When the video display device receives a screen display key signal transmitted by pressing a screen display key in the remote control device, either the information of the input video signal currently displayed on the screen or the information related to recording in the external memory Alternatively, both pieces of information are displayed on the screen.

Patent Document 2 discloses a television system in which the category and current status of each video transmission device can be detected and displayed on a monitor. This makes it possible to know the category and status of the currently selected video transmission device and the category and status of other video transmission devices that are not currently selected.
JP 2005-197954 A Japanese Patent Laid-Open No. 02-98283

  As described above, it is general that a plurality of external devices are connected to one display device such as a television device, or that a built-in device is connected to the display device. A user using a system having such a configuration may forget whether a program that is currently being viewed is reserved or recorded, or which input source is used for recording.

  In such a case, in order for the user to check the status of the input source, after switching each input source, the status of the device corresponding to the input source can be checked, or the control for each input source can be performed. There was no better way to display and confirm OSD. That is, in order to check the status information of the device connected to or incorporated in the display device, a complicated operation is required.

In the technique of the above-mentioned patent document 1, the input of the television is displayed by an OSD for controlling a connection device based on IEEE1394 or a built-in source such as a card or a hard disk. However, when there are a plurality of connected devices and built-in sources, there is a problem that the operation becomes complicated to check the states of all the sources.
In Patent Document 2, information detection means is provided in an external device connected to a monitor, and the detection result of the status information of the external device is transmitted via a bus line so that a list can be displayed on the monitor side. However, Patent Document 2 is intended for input / output control with an external device, and the status information of the connected device is detected on the connected device side. That is, it is not a configuration in which the status information of the connected device can be detected and displayed on the monitor (display device) side.

  The present invention has been made in view of the above-described circumstances, and by displaying a list of the status of each connected device by simply displaying the input switching menu, the devices connected without requiring complicated operations. An object of the present invention is to provide a display device capable of confirming the state.

  In order to solve the above-described problem, a first technical means of the present invention is a display device in which a plurality of devices are connected and input can be switched from the plurality of devices, and the display device is connected by an IEEE 1394 or HDMI interface. The device status information of the device is acquired from the device, and the input switching menu is displayed by a predetermined display method associated with the acquired status information.

  According to a second technical means, in the first technical means, the display device acquires the status information of the device from the device connected by the IEEE 1394 interface by using an AV / C command defined by IEEE 1394, and HDMI From the device connected by the interface, the device status information is obtained by using a CEC command defined by HDMI.

  According to a third technical means, in the first or second technical means, the display device performs a display with a specific mark according to the state information as an input display corresponding to each device in the input switching menu. It is a feature.

  According to a fourth technical means, in the first or second technical means, the display device has a predetermined display color, font, or character size corresponding to the state information as an input display corresponding to each device in the input switching menu. The display is performed by one or more of the above.

  According to a fifth technical means, in the first or second technical means, the display device performs a skip setting of the input switching menu in accordance with the state information obtained from the device.

  According to a sixth technical means, in any one of the first to fifth technical means, the display device uses the CEC command to identify and specify a connection tree structure of devices connected to the display device through the HDMI interface. The display of the input switching menu is changed according to the connection tree structure.

  According to the present invention, it is possible to check the status of connected devices without requiring complicated operations by displaying a list of the status of each connected device simply by displaying the input switching menu. .

FIG. 1 is a diagram showing an example of an input switching menu in a display device according to the present invention, which shows a display example of an input switching menu when a plurality of external devices are connected to a display device such as a television device. It is.
Here, it is assumed that three input sources (INPUT SOURCE) and one 1394 input source are set. The 1394 input source refers to a source that is input through the IEEE 1394 interface.
The three input sources are set according to the use terminal positions when an external device is connected using connection terminals for various inputs provided in the display device, for example. The connection terminals can include DVI terminals and HDMI terminals in addition to D terminals and S terminals. The connection terminals for inputs 1 to 3 displayed on the input switching menu are determined in advance, and an external device connected to the connection terminal is displayed as an input source for the switching menu. Note that the connected devices can include not only external devices connected to these connection terminals but also devices such as a recording device built in the display device. For example, the recording medium is displayed as one of the input sources. You can also.

IEEE 1394 is an interface that enables multimedia data transfer such as digital video and digital audio and operation of connected devices between devices having corresponding terminals.
In addition, HDMI is a DVI (Digital Visual Interface) standard for connecting PCs and displays, with an audio transmission function and copyright protection function arranged for AV equipment. Control signals are compatible with bidirectional transmission. Therefore, for example, by relaying control signals from the monitor to an output device such as an STB (Set Top Box) or DVD player connected via HDMI, the entire AV system such as a home theater can be operated with a single remote controller. It is said. Hereinafter, a device corresponding to IEEE 1394 is simply referred to as a 1394 device, and a device corresponding to HDMI is referred to as an HDMI device.

And in embodiment which concerns on this invention, when the apparatus is connected with respect to the display apparatus, the status information of a connected apparatus can be confirmed only by displaying an input switching menu like FIG. In this case, the display showing the device status information is performed on the input source display section of the input switching menu by a predetermined method.
In the example of FIG. 1, the characters “INPUT1” are grayed out, indicating that the power of the corresponding connected device is OFF. In addition, a “■” mark is displayed in “INPUT 2”, indicating that the corresponding connected device is stopped. Furthermore, a “●” mark is displayed in “1394”, and the character color of i.LINK is changed and displayed in red, indicating that the 1394 device is recording.

  The input switching menu can be displayed on the screen of the display device simply by operating the input switching menu button prepared on the remote control device, for example, so that the user can display the status information of the currently connected device by a simple operation. The input source can be easily selected.

  The status information of the connected device is acquired by an AV / C command in the IEEE 1394 interface connected to the display device, or is acquired by using a CEC (Consumer Electronics Control) command in the HDMI interface.

  For example, in the IEEE 1394 standard, it is possible to know the status information of the partner device by exchanging commands (AV / C commands) between devices interconnected by the IEEE 1394 interface. Examples of commands include, for example, a command to turn on the power of the counterpart device, a command to send the status information to the counterpart device when its own status information changes, and a connection status on the IEEE 1394 bus. A command, a command for establishing a connection with the counterpart device, a command for requesting a recording operation to the counterpart recording device, and the like can be used. By using such a command, the display device can acquire information on the status information of the connected device connected by IEEE1394.

  On the other hand, in the HDMI interface, CEC (Consumer Electronics Control) included in the HDMI standard is used in order to know the status information of the connected device. CEC is a control protocol standardized by HDMI, and is a control signal based on that protocol. By exchanging CEC commands between devices, the state of the device connected to the display device can be recognized from the display information. In this case, in order to acquire the status information of the connected device, a CEC vendor command is created and device information is exchanged.

  FIG. 2 is a diagram illustrating an example of state information of a connection partner apparatus acquired by the display device. For example, the status information of the connected device that can be recognized by the display device using the IEEE 1394 AV / C command includes “power on / off”, “playing”, “slow playback”, “reverse slow playback”, “Stopping”, “Recording”, “Fast-forwarding”, “Rewinding”, “Pausing”, “Recording pause”, “Repeat playback on”, “HDV camera mode”, “Playback / Fast-forward / There are "Rewind speed", "Tape type", "Media write disabled", "With / without media".

  Similarly, in the case of HDMI, “power on / off”, “power on transition”, “power off transition”, “playing”, “slow playback”, “reverse playback”, “reverse slow” Recognizing status information such as “playing”, “stopping”, “recording”, “fast-forwarding”, “rewinding”, “in-tex search”, “pause”, “with / without media” is there.

In the display device, the display method of the input switching menu is determined for all or at least a part of the state information. The display method of the input switching menu corresponding to the state information can be arbitrarily determined. For example, as shown in FIG. 1, a mark indicating the state information such as recording or stopping may be displayed together with the input source name. Alternatively, it can be set as appropriate, for example, by changing the display color of the input source such as displaying red during recording, or by changing the font and size of the input source display.
When the input switching menu as shown in FIG. 1 is displayed according to the user operation, the input source is displayed according to the acquired state information.

  The operation information of the externally connected device as described above can be acquired by the display device when the devices are connected by the IEEE 1394 interface or the HDMI interface. In addition, when both of these interfaces are connected between devices, they can be acquired using either of these interfaces.

  When a plurality of devices are connected to one input source, for example, when a plurality of AV devices are connected to one connection terminal via a repeater device such as an AV amplifier, these are connected via HDMI. If so, the connection configuration (tree configuration) can be recognized by the display device. With HDMI, the number of devices connected to the display device and position information can be obtained. That is, the display device can obtain the type and position information of the connected device by acquiring the physical address and the logical address specified by the HDMI standard for the device connected by HDMI.

  As an example, when two DVD players are connected to the HDMI input of the display device via an AV amplifier, the physical address of the display device based on the HDMI standard is “0.0.0.0”, and the logical The address is “0”. The physical address of the AV amplifier corresponding to the lower layer of the display device is “1.0.0.0”, and the logical address is “5”. Further, the physical addresses of the DVD player corresponding to the lower layer of the AV amplifier are “1.1.0.0” and “1.2.0.0”, respectively, and the logical addresses are “4” and “8”, respectively. By obtaining such CEC address information, the display device can know the connection tree structure of the AV amplifier and the two DVD players connected to the AV amplifier.

In the display device, the input switching menu can be expanded and displayed according to the tree structure of the connected devices acquired by HDMI.
FIG. 3 is a diagram showing another example of the input switching menu in the display device according to the present invention. Assume that the HDMI input of the display device is input 3. It is assumed that a repeater device such as an AV amplifier is connected to the connection terminal corresponding to the input 3, and two external devices such as a DVD player are connected to the input side of the AV amplifier.

  In the display device, the physical address and the logical address of the AV amplifier and the DVD player are acquired using the HDMI CEC command, and the input switching menu can be rewritten and displayed as an input switching menu as shown in FIG. In this case, the HDMI input 3 (INPUT3) included in the display device is expanded and displayed as three inputs of INPUT3-1, INPUT3-2, and INPUT3-3.

In this case, INPUT3-1 is an input to the HDMI input terminal included in the display device, INPUT3-2 is an input of the DVD player to one of the HDMI input terminals of the AV amplifier, and INPUT3-3 is an HDMI included in the AV amplifier. This is the input of the DVD player to the other input terminal.
At this time, in order to understand the connection tree structure of the device, a number indicating the hierarchy of the tree may be displayed in the display portion of the input source, the device name information specified from the physical address is displayed, or Device name information that can be arbitrarily set by the user may be displayed.

  The display device acquires status information for each of these external devices using the CEC command, and displays the input switching menu according to the status information. Accordingly, when a plurality of HDMI devices are connected to one connection terminal of the display device, the user can recognize the connection configuration and the state of the device.

  When any input can be selected for the input switching menu as shown in FIG. 3, the CEC command may be used to perform input switching of the repeater device. That is, in a repeater device in which a plurality of HDMI devices are connected to the input side, when a device not selected by the repeater device is selected from the input switching menu of the display device, the input device is switched from the display device to the repeater device by a CEC command. Instruct. As a result, the repeater device switches the input and sets the input of the device selected by the display device to be valid.

  In addition to the extended menu as described above, a tree display may be provided so that the tree structure of HDMI-connected devices can be easily understood on the input switching menu as shown in FIG. These input sources are displayed according to the same state information as described above.

  FIG. 5 is a diagram showing still another example of the input switching menu in the display device according to the present invention. In the present embodiment, the skip setting of the input switching menu is performed according to the state information obtained from the device. In other words, the display device according to the present embodiment performs control so that when the device status information cannot be acquired at a specific connection terminal, the input source corresponding to the connection terminal cannot be selected, and the cursor skips the input source. .

  As described above, the input terminals 1 to 3 to be displayed on the switching menu are determined in advance, and an external device connected to the connection terminal is displayed as an input source of the switching menu. The status information of the device connected to the input source can be acquired by an IEEE 1394 interface or an HDMI CEC command.

  At this time, in the present embodiment, the input source cannot be selected for a connection terminal for which device state information cannot be acquired. For example, when a response command from the device does not return even though an AV / C command or an HDMI CEC command by IEEE 1394 is transmitted to acquire the device status information from the display device side, the device status information Cannot be acquired.

  In this case, if the device itself is not connected to the connection terminal, or if a 1394 device is connected, the device is not turned on, and if an HDMI device is connected, the AC power Is unplugged from the outlet. In such a state, video / audio input from the connection terminal is impossible.

  In the present embodiment, when the device status information as described above cannot be acquired, the input source of the switching menu is displayed so as to be clearly distinguishable. For example, as shown in FIG. 5, a closed sign is displayed for an input source of “INPUT 2” for which status information cannot be acquired, thereby making selection impossible. At this time, when the user performs an operation to move the cursor on the input switching menu, the input source that cannot be selected is skipped when the cursor is moved, and control is performed so that the cursor cannot be stopped on the input source. The

On / off of the control for skipping the input source for which the device status information could not be acquired can be set by the user through a predetermined menu.
Further, such skip setting may be enabled for each connection terminal included in the display device.
As a result, when the device status information cannot be acquired from the connection terminal, it is possible to explicitly display the input source corresponding to the connection terminal and perform skip setting so that the user does not select the input source. As a result, an input source selection operation that cannot be used in the input switching menu can be eliminated, and an input switching menu that is highly convenient for the user can be provided.

FIG. 6 is a flowchart for explaining an example of acquisition processing of status information of a connected device by the display device of the present invention. In this example, after the display device is turned on, the status information of the externally connected device or the built-in device is periodically acquired and the acquired information is stored.
In FIG. 5, when the display device is first turned on (step S1), it is determined whether or not the status information of the input n has been acquired (step S2). Here, the number of input sources set in the input switching menu is n, and the display device acquires status information of the connected device connected as the nth input source. Acquisition of the status information of the connected device is executed using a predetermined command by the IEEE 1394 or HDMI interface as described above.

If the status information of input n cannot be acquired by the display device, n = n + 1 is set, or if n = the maximum number of inputs, n = 1 is set, and the process returns to step S2. Further, if the display device can acquire the state information of the input n, the display device stores the state information in its own memory (step S3) and proceeds to step S4 to set n = n + 1 or n when n is the maximum number of inputs. = 1.
In this way, the display device can acquire the state information of the input source with the number of inputs n and store the acquired information in the memory. The information stored in the memory is used as appropriate when displaying the input switching menu in the following processing examples.

  FIG. 7 is a flowchart for explaining another example of the acquisition processing of the status information of the connected device by the display device of the present invention. In this example, when the input switching key provided in the remote control device is pressed, the display device acquires the status information of the externally connected device or the built-in device held in the memory and performs display according to the status information. Like that.

  In FIG. 7, when the input switching key is operated (step S11), the display device draws the title of the input switching menu (step S12). Then, the status information of the externally connected device or the built-in device stored in its own memory is acquired (step S13), and each input source is drawn according to the acquired status information (step S14). Here, as described above, the status information can be visually understood by adding a specific mark according to the status information of the connected device or changing the display form such as the display color. Thus, the user can recognize the state of the connected device only by operating the input switching key.

  FIG. 8 is a diagram for explaining a configuration example of connection between devices by IEEE1394 and connection by HDMI. Here, a configuration is shown in which a display device and an external device are connected to each other with both IEEE1394 and HDMI interfaces. When the external device has only one interface of IEEE 1394 and HDMI, the relevant part of only the other interface is deleted from the configuration.

  The HDMI cable 40 is a TMDS (Transition Minimized Differential Signaling) line (digital signal transfer line) 41 for transmitting a video / audio signal, which is a digital signal, in a differential manner, and a CEC command that is common between devices. And a CEC line 42 which is a bus for the bus. In addition, the HDMI cable includes a DDC line (not shown) used for transmission of EDID (Extended Display Identification Data), HDCP authentication, and the like.

  A stream including video / audio is transmitted using the TMDS line 41. The TMDS line 41 is a serial transmission line, and includes, for example, three data transmission lines for each channel of red (R), green (G), and blue (B), and one clock transmission line. The video signal decomposed into R, G and B is transmitted as a baseband signal in the transmission path, and the audio signal is inserted in the blanking period of the video signal and transmitted simultaneously with the video signal.

  The IEEE 1394 cable 30 realizes connection according to IEEE 1394, and a command (AV / C command) is superimposed on a stream including video / audio and transmitted by a single cable. In the case of IEEE 1394, unlike HDMI, the stream transmission line and the command transmission line are not physically separated.

  A CEC command transferred via the CEC line 42 is used to realize the acquisition processing of the status information of the external device according to the present invention. As described above, CEC is a control protocol standardized by HDMI, and the CEC command is a control signal based on the CEC protocol. The status information of the external device 10 can be acquired by the display device 20 by exchanging information between the devices using the CEC command.

  The external device 10 includes an HDMI transmitter 11, a HOST CPU 12, a front microcomputer 13, a CEC I / F 14, an IEEE1394 transmission / reception unit 15, a remote control light receiving unit 16, an HDMI connector 17, an IEEE1394 connector 18, and a memory 19. The HDMI transmitter 11 reads video data and audio data recorded on a medium such as a DVD, and converts the audio signal into an HDMI format stream inserted during the blanking period of the video signal. Then, the converted stream is transferred to the display device 20 through the TMDS line 41.

  The IEEE 1394 transmission / reception unit 15 transmits the video / audio stream to the display device 20 via the IEEE 1394 cable 30 or receives the video / audio stream from the display device 20 via the IEEE 1394 cable 30. In addition, AV / C commands to be superimposed on the video / audio stream are transmitted / received to / from the display device 20. The AV / C command is a control signal based on the IEEE 1394 standard.

  The HOST CPU 12 is a main CPU that controls the entire apparatus, includes an HDMI controller, controls the operation of the HDMI transmitter 11, includes an IEEE 1394 controller, and controls the operation of the IEEE 1394 transmission / reception unit 15.

  The CEC I / F 14 connects the CEC line 42 in the HDMI cable and enables bidirectional communication of CEC commands with the display device 20. The operation of the CEC I / F 14 is controlled by the front microcomputer 13 including a CEC controller, and can control devices connected by HDMI using a CEC command. In the case of CEC, since the logical address (device type) and physical address (device position) of each HDMI-connected device are acquired, a CEC command can be sent to a desired device by specifying this logical address and physical address. Can be sent.

The front microcomputer 13 operates with low power and monitors a CEC command transferred from the CEC line 42. The front microcomputer 13 is a sub CPU, and controls a remote control light receiving unit 16 that receives a remote control signal from a remote control device (not shown). Even when the HOST CPU 12 is down in the standby mode of the apparatus or the like, the front microcomputer 13 operates and maintains a state in which transmission / reception of CEC commands and reception of remote control signals are possible.
The memory 19 is a nonvolatile memory such as an EEPROM for storing a logical address and a physical address in HDMI and also storing a GUID that is unique information of the device in IEEE1394.

  The display device 20 includes a HOST CPU 21, an HDMI receiver 22, a monitor microcomputer 23, a CEC I / F 24, an IEEE 1394 transmission / reception unit 25, a remote control light receiving unit 26, an HDMI connector 27, an IEEE 1394 connector 28, and a memory 29. The display device 20 receives the stream transferred from the external device 10 by the HDMI receiver 22. The HDMI receiver 22 may be built in the HOST CPU 21. Further, the CEC line 42 is connected to the external device 10 by the CEC I / F 24.

  The IEEE 1394 transmission / reception unit 25 receives the video / audio stream from the external device 10 via the IEEE 1394 cable 30 or transmits the video / audio stream to the external device 10 via the IEEE 1394 cable 30. In addition, a command to be superimposed on the video / audio stream is transmitted / received to / from the external device 10.

  The HOST CPU 21 is a main CPU that controls the entire apparatus. The HOST CPU 21 includes an HDMI controller, controls the operation of the HDMI receiver 22, includes an IEEE 1394 controller, and controls the operation of the IEEE 1394 transmission / reception unit 25. The monitor microcomputer 23 includes a CEC controller and monitors a CEC command transferred from the CEC line 42. The monitor microcomputer 23 controls a remote control light receiving unit 26 that receives a remote control signal from a remote control device (not shown). Even when the HOST CPU 21 is down in the standby mode of the apparatus or the like, the monitor microcomputer 23 operates and maintains a state in which transmission / reception of CEC commands and reception of remote control signals are possible.

  The memory 29 is a non-volatile memory such as an EEPROM that stores a logical address and a physical address in HDMI and also stores a GUID that is device-specific information in IEEE1394.

  In the display device 20, the video / audio of the stream is separated by the HDMI receiver 22, performs predetermined video signal processing and audio signal processing as necessary, displays video on a display screen such as a display, and outputs audio from a speaker. Output. When a video / audio signal is input from a path according to IEEE 1394, the output signal is switched by a video / audio switch.

FIG. 9 is a diagram for explaining a configuration example of the display device of the present invention, and shows an example applied to a television broadcast receiving device equipped with a digital / analog tuner.
The television broadcast receiver 100 is a television broadcast receiver capable of receiving both digital broadcasts and analog broadcasts, and includes a reception antenna 101 that receives analog broadcasts and a reception antenna 102 that receives digital broadcasts. .

  In addition, an analog tuner unit 103 that selects an analog broadcast reception signal, a digital tuner unit 104 that selects a digital broadcast reception signal, and an AV switch unit 105 that extracts audio data / video data from the analog broadcast reception data. And a digital demodulator 106 for demodulating the selected digital broadcast data.

  Furthermore, the television broadcast receiving apparatus 100 decodes EPG data extraction and demodulated data separation unit (DMUX) 107 and the separated digital broadcast video data, or converts the video information as a still image. A video decoding / capturing unit 108 for capturing, a video selector unit 109 for switching between an analog broadcast video signal and a digital broadcast video signal, and an OSD processing unit 110 for performing OSD display processing are provided.

Furthermore, the television broadcast receiving apparatus 100 includes an audio decoding unit 111 that decodes the separated audio data, a video output conversion unit 112 that converts the selected video signal and the OSD into a video output, and an analog broadcast signal. An audio selector 113 that switches between an audio signal and an audio signal of a digital broadcast, an audio output converter 114 that converts the selected audio signal into an output signal, and a channel selection process in an analog broadcast and digital broadcast tuner And a tuning unit 115.
The video output output from the video output conversion unit 112 is displayed on the liquid crystal display panel 126, and the audio signal output from the audio output conversion unit 114 is output as audio through the speaker 127.

  Further, the television broadcast receiving apparatus 100 includes a RAM 116 which is a semiconductor memory, a CPU 117 which performs processing of the entire apparatus, a video mouse connector 118 for executing a reservation process via a video mouse, and a signal transmitted by the video mouse. And a video mouse microcomputer 119 that performs control. The CPU 117 controls each part of the apparatus, and has the functions of the HOST CPU 12 and the front microcomputer 13 shown in FIG. 7. In standby mode, the low power consumption front microcomputer section functions to receive signals from the remote control transmitter and HDMI CEC. A command transmission / reception function shall be realized.

  Furthermore, the television broadcast receiving apparatus 100 stores programs, user data, and the like, and controls a rewritable nonvolatile memory 120 in which EPG data and the like are stored, and a network network such as a telephone line, a LAN, and the Internet. , A communication control unit 121 used for obtaining EPG data, a remote control light receiving unit 122 for receiving a signal from a remote control transmitter 140 operated by a user, and a recording apparatus capable of recording information on a recording medium such as a card medium 123.

  The display information according to the input switching menu and the device status information according to the present invention, the status information of the connected device acquired from the connected device via IEEE1394 or HDMI, and the like are held in the nonvolatile memory 120. Then, in response to pressing of an input switching key provided in remote control transmitter 140, CPU 117 draws an input switching menu, performs OSD display processing by OSD processing unit 110, and outputs it as a display video signal.

The television broadcast receiving apparatus 100 includes an IEEE 1394 I / F 124 and an HDMI I / F 125, and the IEEE 1394 compatible 1394 device 130 and the HDMI compatible HDMI device 131 can be connected to each other by the respective I / F. Yes.
The IEEE 1394 I / F 124 includes an I / F for enabling connection of a 1394 device to the television broadcast receiving apparatus 100, and includes the functions of the IEEE 1394 connector 18 and the IEEE 1394 transmission / reception unit 15 shown in FIG. The HDMI I / F 125 is an interface for connecting an HDMI device to the television broadcast receiving apparatus 100, and the functions of the HDMI connector 27, the HDMI receiver 22, and the CEC I / F 24 shown in FIG. included.

It is a figure which shows an example of the input switching menu in the display apparatus by this invention. It is a figure which shows the example of the status information of the other party apparatus which a display apparatus acquires. It is a figure which shows the other example of the input switching menu in the display apparatus by this invention. It is a figure which shows the further another example of the input switching menu in the display apparatus by this invention. It is a figure which shows the further another example of the input switching menu in the display apparatus by this invention. It is a flowchart for demonstrating the acquisition process example of the status information of the other party apparatus by the display apparatus of this invention. It is a flowchart for demonstrating the other example of the acquisition process of the status information of the other party apparatus by the display apparatus of this invention. It is a figure for demonstrating the structural example of the connection by IEEE1394 and the connection by HDMI between apparatuses. It is a figure for demonstrating the structural example of the display apparatus of this invention, and shows the example applied to the television broadcast receiver provided with the digital / analog tuner.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... External device, 11 ... HDMI transmitter, 12 ... CPU, 13 ... Front microcomputer, 14 ... CEC I / F, 15 ... Transmission / reception part, 16 ... Remote control light-receiving part, 17 ... HDMI connector, 18 ... Connector, 19 ... Memory, DESCRIPTION OF SYMBOLS 20 ... Display apparatus, 21 ... CPU, 22 ... HDMI receiver, 23 ... Monitor microcomputer, 24 ... CEC I / F, 25 ... Transmission / reception part, 26 ... Remote control light-receiving part, 27 ... HDMI connector, 28 ... Connector, 29 ... Memory, DESCRIPTION OF SYMBOLS 30 ... Cable, 40 ... HDMI cable, 41 ... TMDS line, 42 ... CEC line, 100 ... Television broadcast receiver, 101 ... Receiving antenna, 102 ... Receiving antenna, 103 ... Analog tuner part, 104 ... Digital tuner part, 105 ... AV switch unit, 106 ... digital demodulation unit, 107 ... separation unit DMUX), 108 ... capture unit, 109 ... video selector unit, 110 ... OSD processing unit, 111 ... audio decoding unit, 112 ... video output conversion unit, 113 ... audio selector unit, 114 ... audio output conversion unit, 115 ... channel selection unit 116 ... RAM, 117 ... CPU, 118 ... Video mouse connector, 119 ... Video mouse microcomputer, 120 ... Non-volatile memory, 121 ... Communication control unit, 122 ... Remote control light receiving unit, 123 ... Recording device, 124 ... IEEE1394 I / F , 125 ... HDMI I / F, 126 ... liquid crystal display panel, 127 ... speaker, 130 ... equipment, 131 ... HDMI equipment, 140 ... remote control transmitter.

Claims (6)

  In a display device in which a plurality of devices are connected and input can be switched from the plurality of devices, the display device acquires status information of the devices from the devices connected by IEEE1394 or HDMI interface, and An input switching menu is displayed by a predetermined display method associated with acquired state information.   The display device according to claim 1, wherein the display device acquires state information of the device from a device connected by an IEEE 1394 interface using an AV / C command defined by the IEEE 1394, and the HDMI A display device characterized in that status information of the device is acquired from a device connected by an interface using a CEC command defined by HDMI.   3. The display device according to claim 1, wherein the display device performs a display with a specific mark according to status information as an input display corresponding to each device in the input switching menu. Display device.   3. The display device according to claim 1, wherein the display device uses any one of a predetermined display color, a font, and a size of a character as input display corresponding to each device in the input switching menu. Or a plurality of display devices.   3. The display device according to claim 1, wherein the display device performs skip setting of the input switching menu according to state information obtained from the device.   6. The display device according to claim 1, wherein the display device uses the CEC command to identify a connection tree structure of devices connected to the display device through an HDMI interface, and A display device that changes the display of the input switching menu according to the connected tree structure.

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