JP2011066646A - Display device, video/audio data output device and audio output device, and input switching control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To appropriately perform one-touch play using CEC in a home theater system provided with a video/audio data output device that outputs video/audio data using two HDMI output parts. <P>SOLUTION: A TV 110 has: a device information storage part 115 which links identification information of a BD player 140 to a physical address assigned to a second HDMI output part 142 that outputs audio data to an AV amplifier 120 and stores them, a CEC communication part 114 which transmits and receives CEC commands; an input switching part 117 which switches input according to a physical address added to an output start notification command; and a determination part 116 which determines whether or not to the identification information of a device that transmits the output start notification command is identical to the stored identification information. If the identification information matching is successful, the CEC communication part 114 transmits an input switching command added with a physical address stored in the device information storage part 115 to the AV amplifier 120. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a display device, a video / audio data output device, an audio output device, or the like included in an AV system.

  In recent years, high quality and high sound quality of AV equipment has progressed, and even in general homes, DVD (Digital Versatile Disc) players, BD (Blu-ray Disc (registered trademark)) players, AV (Audio-Visual) amplifiers, etc. Home theater systems using the TV have become widespread.

  In addition, with the spread of networks or HDMI (High-Definition Multimedia Interface), so-called link functions that provide various additional functions have become widespread as a plurality of AV devices perform operations in cooperation with each other. Among the link functions, for example, when the playback of the BD player is started, the television is automatically turned on, and the input of the television and the AV amplifier is switched to the input from the BD player. With this function, the user can easily view the content being played back by the BD player without having to operate the TV or AV amplifier. Generally, such a function is called one-touch play.

  In order to realize a link function such as this one-touch play, the HDMI standard defines a device control protocol called CEC (Consumer Electronics Control) (see Non-Patent Document 1).

  An example of one-touch play operation in the home theater system will be described with reference to FIGS.

(Configuration of home theater system)
FIG. 1 is a diagram illustrating an example of a configuration of a general home theater system. As shown in FIG. 1, the home theater system 1 includes a TV 10, an AV amplifier 20, and a BD player 30.

  The TV 10 includes two HDMI input units (first HDMI input unit 11 and second HDMI input unit 12) and an audio output unit (optical digital audio output unit) 13.

  The AV amplifier 20 includes one HDMI output unit 21, two HDMI input units (first HDMI input unit 22 and second HDMI input unit 23), an audio input unit (optical digital audio input unit) 24, and a speaker output. Part 25.

The BD player 30 has one HDMI output unit 31.
The first HDMI input unit 11 of the TV 10 and the HDMI output unit 21 of the AV amplifier 20 are connected using an HDMI cable 70. The audio output unit 13 of the TV 10 and the audio input unit 24 of the AV amplifier 20 are connected using an audio cable 80 such as an optical digital audio cable. The first HDMI input unit 11 of the AV amplifier 20 and the HDMI output unit 31 of the BD player 30 are connected using an HDMI cable 70. The speaker output unit 25 of the AV amplifier 20 and the speaker 60 are connected using a speaker cable 90.

(Physical address of each device)
FIG. 2 is an explanatory diagram of a physical address assignment method in the HDMI standard.

  Each device connected using the HDMI cable 70 is assigned a physical address (hereinafter, abbreviated as “PA (Physical Address)”) indicating a connection position. This physical address is a device identification number represented by a 16-bit numerical value divided into 4 bits by 4 bits. Generally, the connection configuration of HDMI devices has a tree structure with the root device as a vertex as shown in FIG. Usually, the TV is the root device.

  A physical address [0.0.0.0] is assigned to the root device. Then, physical addresses [1.0.0.0], [2.0.0.0],... Are sequentially assigned to devices directly connected to the root device. Furthermore, the devices connected to the device to which [1.0.0.0] is assigned have physical properties [1.1.0.0], [1.2.0.0],. An address is assigned. As shown in FIG. 2, devices connected to the same device are assigned different physical addresses at the same position. Further, as the number of connected stages increases, the physical address is assigned so that the position of the changing numerical value is shifted to the right one by one.

(Flow of video data and audio data when video and audio reproduced by the BD player 30 are output)
FIG. 3 is a diagram showing the flow of video data and audio data when video and audio reproduced by a BD player are output.

  The BD player 30 outputs the video data and audio data to the AV amplifier 20 via the HDMI cable 70.

  The AV amplifier 20 performs analog conversion on the received audio data. Then, the AV amplifier 20 outputs the audio after analog conversion to the speaker 60 via the speaker cable 90. If the received audio data is compressed data, the AV amplifier 20 expands the audio data and then converts the expanded audio data into analog data.

  The AV amplifier 120 outputs the received video data to the TV 110 as it is via the HDMI cable 70.

  The TV 110 displays a video included in the video data received from the AV amplifier 120.

(Flow of video data and audio data when video and audio generated by the TV 10 are output)
FIG. 4 is a diagram showing the flow of video data and audio data when video and audio generated by TV (Television) are being output.

  The TV 10 displays video included in the received TV broadcast. Further, the TV 10 outputs audio data during TV broadcasting to the AV amplifier 20 via the audio cable 80.

  The AV amplifier 20 converts the audio data received from the TV 10 into an analog signal. Then, the AV amplifier 20 outputs the audio after analog conversion to the speaker 60 via the speaker cable 90. If the received audio data is compressed data, the AV amplifier 20 performs analog conversion after expanding the audio data.

(One-touch play operation)
When changing the viewing device, the user usually has to manually switch the input of the TV 10 and the AV amplifier 20. However, if each device supports CEC, input switching is automatically performed by using a CEC command.

FIG. 5 is a sequence diagram of a CEC command when reproduction of the BD player is started.
When the playback of the BD player 30 is started, the BD player 30 transmits an <Active Source> command to all devices connected by HDMI. The physical address of the transmission source (in this case, the BD player 30) is added to the <Active Source> command. The AV amplifier 20 and the TV 10 can switch the input to an appropriate input by referring to the physical address added to the <Active Source> command.

  In the case of FIG. 5, since the physical address added to the <Active Source> command is [1.1.0.0], the TV 10 receives an input from the first HDMI input unit 11 according to the first numerical value from the left. The AV amplifier 20 switches the input to the input from the first HDMI input unit 22 according to the second numerical value from the left. Accordingly, the user can view the content reproduced by the BD player 30 using the TV 10 and the AV amplifier 20 without manually switching the input of each device.

FIG. 6 is a sequence diagram of the CEC command when the TV internal tuner is selected.
When the internal tuner (any channel) of the TV 10 is selected, the TV 10 transmits an <Active Source> command to all devices. At this time, the physical address [0.0.0.0] of the TV 10 is added to the <Active Source> command.

  When the physical address added to the <Active Source> command is [0.0.0.0], the AV amplifier 20 switches the input to the input from the voice input unit 24. Accordingly, the user can listen to the audio of the content being viewed on the TV 10 using the AV amplifier 20 without manually switching the input of the AV amplifier 20.

(Automatic input switching operation of other AV amplifiers 20)
Further, when receiving the <Set Stream Path> command transmitted from the TV 10 or the like, the AV amplifier 20 refers to the physical address added to the <Set Stream Path> command, so that the <Active Source> command is received. Similarly, the input can be switched to an appropriate input. Such a command is used, for example, to switch the input of the AV amplifier 20 to an appropriate input when the playback device connected to the AV amplifier 20 does not support CEC.

  As described above, by using CEC, the home theater system can realize one-touch play.

  Various device control techniques using the <Active Source> command and the <Set Stream Path> command have also been proposed (see, for example, Patent Document 1).

JP 2009-021690 A

HDMI standard (High-Definition Multimedia Interface Specification Version 1.3a)

  With the advancement of video technology or audio technology, data transmission interfaces often support new technologies. For example, in HDMI, it is considered that transmission of high-definition video such as 3D (3-Dimension) video and ultra-high definition video called 4k2k will be added in version 1.4.

  However, a home theater system does not necessarily include all devices that are compliant with the new standard. For example, even if the TV and the BD player support transmission of high-definition video such as 3D video, the AV amplifier may not support transmission of high-definition video. In this case, if each device is connected as shown in FIG. 1, the BD player cannot output the high-quality video because the AV amplifier does not support transmission of the high-quality video. That is, the BD player outputs a conventional video, and the user cannot view a high-definition video.

  Therefore, for example, a configuration in which two HDMI output units are mounted on a BD player, and one is directly connected to a TV and the other is directly connected to an AV amplifier.

  FIG. 7 is a diagram illustrating an example of a configuration of a home theater system including a BD player having two HDMI output units. As shown in FIG. 7, the home theater system 2 includes a BD player 40 having two HDMI output units instead of the BD player 30, and the TV 10 and the BD player 40 are directly connected.

  The first HDMI output unit 41 of the BD player 40 is connected to the first HDMI input unit 11 of the TV 10 via the HDMI cable 70. Also, the second HDMI output unit 42 of the BD player 40 is connected to the first HDMI input unit 22 of the AV amplifier 20 via the HDMI cable 70.

  The first HDMI output unit 41 and the second HDMI output unit 42 of the BD player 40 are treated as virtually separate HDMI devices. Therefore, as shown in FIG. 7, different physical addresses are allocated to the first HDMI output unit 41 and the second HDMI output unit 42, respectively.

  At this time, the BD player 40 simultaneously outputs video data including high-definition video from the first HDMI output unit 41 and audio data from the second HDMI output unit 42. As a result, when the AV amplifier 20 outputs the sound reproduced by the BD player 40, the TV 10 can display the high-definition video reproduced by the BD player 40.

  However, in this case, as described below, there is a problem that the one-touch play by CEC does not operate correctly.

  FIG. 8 is a sequence diagram of a CEC command at the start of BD player playback when the physical address of the first HDMI output unit is used as a parameter. FIG. 9 is a sequence diagram of a CEC command at the start of BD player playback when the physical address of the second HDMI output is used as a parameter.

  As shown in FIG. 8, when the physical address [1.0.0.0] is added to the <Active Source> command, the TV 10 inputs the first HDMI input according to the first numerical value from the left of the physical address. Switch to input from unit 11. On the other hand, since the first numerical value from the left of the physical address is different from the first numerical value from the left of its own physical address [2.0.0.0], the AV amplifier 20 inputs the voice input unit. Switch to input from 24.

  As a result, 3D video is displayed on the TV 10. However, no sound is output from the speaker 60, or low-quality sound (for example, two-channel sound) included in the sound data input from the first HDMI input unit 11 to the TV 10 is output (depending on the specifications of the TV 10). ).

  Also, as shown in FIG. 9, when the physical address [2.1.0.0] is added to the <Active Source> command, the AV amplifier 20 inputs the first HDMI input according to the second numerical value from the left. Switch to input from unit 11. On the other hand, the TV 10 switches to the input from the second HDMI input unit 12 according to the first numerical value from the left of the physical address.

  As a result, high-quality sound (for example, 7.1 channel surround sound) is output from the speaker 60. However, no video is displayed on the TV 10 or normal video is displayed (determined by whether the BD player 40 outputs video data from the second HDMI output unit 42).

  As described above, when the home theater system is configured as shown in FIG. 7 in order to view 3D video and high-definition audio at the same time, there is a problem that one-touch play by CEC does not operate properly.

  The same problem occurs every time a new image is created by technological advancement, such as not only 3D images but also ultra-high definition images.

  Further, even when the AV amplifier supports video data to be viewed, there is a need to transmit video data directly to the TV and audio data directly to the AV amplifier. Also in this case, since the home theater system has a configuration as shown in FIG. 7, the same problem as described above occurs.

  Accordingly, the present invention provides a display device, video capable of appropriately operating CEC one-touch play in a home theater system including a video / audio data output device that outputs video data and audio data using two HDMI output units. An object is to provide an audio data output device and an audio output device.

  In order to achieve the above object, a display device according to one embodiment of the present invention includes an audio output device and a video / audio data output device that outputs video data and audio data using two HDMI output units. Each of which is connected to each other via a video display device and displays video included in the video data output from the video / audio data output device, the identification information for identifying the video / audio data output device, and the two Among the HDMI output units, the device information that is associated with the physical address assigned to the HDMI output unit that does not support CEC and outputs at least audio data to the audio output device A holding unit, a CEC communication unit that transmits / receives a CEC command to / from the audio / video data output device or the audio output device, video data and audio When the CEC communication unit receives an output start notification command indicating that data output is started, an input switching unit that switches input according to a physical address added to the output start notification command, and the CEC communication unit A determination unit that determines whether or not the identification information of the device that has transmitted the output start notification command matches the identification information held in the device information holding unit when the output start notification command is received; When the determination unit determines that the identification information matches, the CEC communication unit instructs the device information holding unit to switch the input to which the physical address held in association with the identification information is added. An input switching instruction command is transmitted to the audio output device.

  As a result, the input can be switched in accordance with the output start notification command received from the video / audio data output device, and the audio output device can be appropriately switched. That is, even when the video / audio data output device outputs video data and audio data using two HDMI output units, the input can be appropriately switched. That is, in a home theater system including a video / audio data output device that outputs video data and audio data using two HDMI output units, one-touch play by CEC can be appropriately operated.

  In addition, when the CEC communication unit receives a device information notification command for notifying output of video data and audio data using two HDMI output units, the device information notification command It is preferable to hold the physical address added to the device information notification command in association with the identification information of the device that has transmitted.

  Accordingly, information relating to the video / audio data output device that outputs the video data and the audio data using the two HDMI output units according to the CEC command transmitted from the HDMI-connected video / audio data output device can be easily retained. Is possible.

  Further, it is preferable that the CEC communication unit transmits a device information request command for requesting transmission of the device information notification command to the video / audio data output device.

  As a result, the device information notification command can be received at an arbitrary timing when preparation for reception is completed.

  The input switching instruction command is preferably a <Set Stream Path> command.

This makes it possible to instruct input switching using a general CEC command.
In addition, a display device which is one embodiment of the present invention is connected to an audio output device and an audio / video data output device that outputs video data and audio data using two HDMI output units via HDMI. A display device for displaying a video included in the video data output from the video / audio data output device, the identification information for identifying the video / audio data output device, and the two HDMI output units A device information holding unit that is associated with a physical address assigned to an HDMI output unit that does not support CEC and outputs at least video data to the display device, and the video and audio Data output device or CEC communication unit that transmits and receives CEC commands to and from the audio output device, and output of video data and audio data are When the CEC communication unit receives an output start notification command indicating that the identification information of the device that has transmitted the output start notification command matches the identification information held in the device information holding unit When the determination unit and the determination unit determine that the identification information does not match, the input is switched according to the physical address added to the output start notification command, and when the determination unit determines that the identification information matches, The device information holding unit includes an input switching unit that switches input according to a physical address held in association with the identification information.

  As a result, the input can be appropriately switched according to the output start notification command received from the video / audio data output device. That is, even when the video / audio data output device outputs video data and audio data using two HDMI output units, the input can be appropriately switched. That is, in a home theater system including a video / audio data output device that outputs video data and audio data using two HDMI output units, one-touch play by CEC can be appropriately operated.

  In addition, when the CEC communication unit receives a device information notification command for notifying output of video data and audio data using two HDMI output units, the device information notification command It is preferable to hold the physical address added to the device information notification command in association with the identification information of the device that has transmitted.

  This makes it possible to easily hold information relating to a video / audio data output device that outputs video data and audio data using two HDMI output units in accordance with a CEC command transmitted from a device connected via HDMI. .

  The video / audio data output device according to an aspect of the present invention is connected to each of the display device and the audio output device via HDMI, and at least the video data and the audio data are respectively transmitted to the display device and the audio output device. A video / audio data output device that outputs one of the first HDMI output unit that outputs at least video data to the display device via HDMI, and the video data is output from the first HDMI output unit; A second HDMI output unit that outputs at least audio data to the audio output device via HDMI; and a CEC command to and from the display device or the audio output device via one of the first HDMI output unit and the second HDMI output unit. A CEC communication unit configured to perform the first HDMI output unit and the second HDMI. Physical addresses indicating connection positions allocated to each of the output units are different from each other, and the CEC communication unit uses two HDMI output units to output video data and audio data, and A device information notification command to which a physical address assigned to the other of the first HDMI output unit and the second HDMI output unit is added is sent to the display device and the display device via one of the first HDMI output unit and the second HDMI output unit. Transmit to at least one of the audio output devices.

  As a result, when video data and audio data are output using two HDMI output units, it is possible to transmit device information for performing appropriate input switching to another HDMI-connected device. It becomes.

  The audio output device according to one embodiment of the present invention is connected to the display device and the video / audio data output device that outputs video data and audio data using two HDMI output units, respectively, via HDMI. An audio output device that outputs audio included in audio data output from the video / audio data output device, the identification information for identifying the video / audio data output device, and the two HDMI output units Among them, a device information holding unit that is an HDMI output unit that does not support CEC and holds at least a physical address assigned to the HDMI output unit that outputs audio data to the audio output device; and Video / audio data output device or CEC communication unit that transmits / receives CEC commands to / from the display device, and video / audio data output starts Whether the identification information of the device that has transmitted the output start notification command matches the identification information held in the device information holding unit when the CEC communication unit receives an output start notification command indicating that When the determination unit and the determination unit determine that the identification information does not match, the input is switched according to the physical address added to the output start notification command, and the determination unit determines that the identification information matches And an input switching unit that does not switch the input in accordance with the physical address added to the output start notification command.

  Thus, when an output start notification command is received from a video / audio data output device that outputs video data and audio data using two HDMI output units, switching to an input different from the input to be switched is suppressed. Is possible.

  In addition, when the CEC communication unit receives a device information notification command for notifying output of video data and audio data using two HDMI output units, the device information notification command It is preferable to hold the physical address added to the device information notification command in association with the identification information of the device that has transmitted.

  Accordingly, information relating to the video / audio data output device that outputs the video data and the audio data using the two HDMI output units according to the CEC command transmitted from the HDMI-connected video / audio data output device can be easily retained. Is possible.

  The input switching unit may switch the input according to a physical address added to the input switching instruction command received from the display device by the CEC communication unit.

  Thus, even when the video / audio data output device outputs video data and audio data using two HDMI output units, the input can be appropriately switched.

  The input switching instruction command is preferably a <Set Stream Path> command.

This makes it possible to instruct input switching using a general CEC command.
The input switching unit may switch the input according to the physical address held in association with the identification information in the device information holding unit when the determination unit determines that the identification information matches.

  The input can be appropriately switched in accordance with the output start notification command received from the video / audio data output device. That is, even when the video / audio data output device outputs video data and audio data using two HDMI output units, the input can be appropriately switched.

  In addition, in the input switching control method according to one aspect of the present invention, a display device, an audio output device, and a video / audio data output device that outputs video data and audio data using at least two HDMI output units mutually perform HDMI. An input switching control method used in an AV system connected via the video / audio data output device, wherein the video / audio data output device is an HDMI output unit compatible with CEC among the at least two HDMI output units. An output start notification command indicating that output of video data and audio data is started, to which a physical address assigned to at least the HDMI output unit that outputs video data is added to the display device, is sent to the display device and the audio output An output start notification command transmission step for transmitting to the device, and the display device includes the output start notification command A first input switching step of switching input according to the physical address added to the output start notification command transmitted in the command transmission step, and identification information of the device from which the display device has transmitted the output start notification command is the device information holding unit A determination step for determining whether or not the identification information stored in the device matches the identification information, and if the determination step determines that the identification information matches, the display device associates the identification information with the device information holding unit. An input switching instruction command transmission step for transmitting an input switching instruction command to which the input is switched, to which the held physical address is added, to the voice output device; and the voice output device, an input switching instruction command transmission step. The input is switched according to the physical address added to the input switching instruction command sent in A second input switching step of switching, wherein the device information holding unit is an HDMI output unit that does not support CEC among the at least two HDMI output units and outputs at least audio data to the audio output device The physical address assigned to the HDMI output unit is stored in association with the identification information of the video / audio data output device.

  Thus, in an AV system including a video / audio data output device that outputs video data and audio data using two HDMI output units, when output of video data and audio data is started from the video / audio data output device. The display device and the audio output device can be automatically switched to an appropriate input. That is, in a home theater system including a video / audio data output device that outputs video data and audio data using two HDMI output units, one-touch play by CEC can be appropriately operated.

  The input switching control method according to one aspect of the present invention includes a display device, an audio output device, and a video / audio data output device that outputs video data and audio data using two HDMI output units, via HDMI. The video / audio data output device is an HDMI output unit compatible with CEC among the two HDMI output units, and is used for the display device. An output start notification command indicating that output of video data and audio data is started, to which the physical address assigned to at least the HDMI output unit that outputs the video data is added, to the display device and the audio output device An output start notification command transmission step for transmitting, and the display device in the output start notification command transmission step. A first input switching step of switching input according to a physical address added to the output start notification command transmitted in step S3, and a device in which the audio output device has transmitted the output start notification command transmitted in the output start notification command transmission step. When the determination step determines whether the identification information matches the identification information held in the device information holding unit, and the determination step determines that the identification information matches, the audio output device A second input switching step of switching an input according to a physical address held in association with the identification information in the holding unit, wherein the device information holding unit is compatible with CEC among the two HDMI output units. No HDMI output unit that outputs at least audio data to the audio output device. The physical address devoted holds in association with the identification information of the video and audio data output device.

  Thus, in an AV system including a video / audio data output device that outputs video data and audio data using two HDMI output units, when output of video data and audio data is started from the video / audio data output device. The display device and the audio output device can be automatically switched to an appropriate input. That is, in a home theater system including a video / audio data output device that outputs video data and audio data using two HDMI output units, one-touch play by CEC can be appropriately operated.

  The input switching control method according to one aspect of the present invention includes a display device, an audio output device, and a video / audio data output device that outputs video data and audio data using two HDMI output units, via HDMI. The video / audio data output device is an HDMI output unit compatible with CEC among the two HDMI output units, and used for the audio output. An output start notification command indicating that output of video data and audio data is started, to which at least a physical address assigned to an HDMI output unit that outputs audio data is added to the device, is sent to the display device and the audio output device An output start notification command transmission step for transmitting to the output start notification command transmission step. A first input switching step of switching input according to a physical address added to the output start notification command transmitted in the step, and an apparatus to which the display device has transmitted the output start notification command transmitted in the output start notification command transmission step A determination step for determining whether or not the identification information matches the identification information held in the device information holding unit, and if the identification information is determined to match in the determination step, the display device holds the device information holding A second input switching step of switching an input in accordance with a physical address held in association with the identification information, wherein the device information holding unit does not support CEC among the two HDMI output units Assigned to an HDMI output unit that outputs at least video data to the display device. It holds in association with the obtained identification information of the physical address the audio-video data output device.

  Thus, in an AV system including a video / audio data output device that outputs video data and audio data using two HDMI output units, when output of video data and audio data is started from the video / audio data output device. The display device and the audio output device can be automatically switched to an appropriate input. That is, in a home theater system including a video / audio data output device that outputs video data and audio data using two HDMI output units, one-touch play by CEC can be appropriately operated.

  As is apparent from the above description, the display device according to the present invention is a one-touch play by CEC in a home theater system including a video / audio data output device that outputs video data and audio data using two HDMI output units. Can be operated properly.

It is a figure which shows an example of a structure of a general home theater system. It is explanatory drawing of the allocation method of the physical address in HDMI specification. It is a figure which shows the flow of the video data and audio | voice data when the video and audio | voice reproduced | regenerated with the BD player are output in the conventional home theater system. It is a figure which shows the flow of the video data and audio | voice data when the image | video and audio | voice demodulated by TV are output in the conventional home theater system. In the conventional home theater system, it is a sequence diagram of a CEC command when playback of a BD player is started. FIG. 10 is a sequence diagram of a CEC command when a TV internal tuner is selected in a conventional home theater system. It is a figure which shows an example of a structure of the conventional home theater system containing the BD player which has two HDMI output parts. In the conventional home theater system, it is a sequence diagram of the CEC command when the reproduction of the BD player is started (when the physical address of the first HDMI output unit is used). FIG. 11 is a sequence diagram of a CEC command (when a physical address of a second HDMI output unit is used) when reproduction of a BD player is started in a conventional home theater system. It is an external view which shows an example of the home theater system which concerns on Embodiment 1 of this invention. It is a figure which shows an example of a structure of the home theater system which concerns on Embodiment 1 of this invention. It is a figure which shows an example of a detailed structure of TV which concerns on Embodiment 1 of this invention. 1 is a diagram illustrating an example of a detailed configuration of an AV amplifier according to Embodiment 1 of the present invention. It is a figure which shows an example of a detailed structure of the BD player which concerns on Embodiment 1 of this invention. FIG. 6 is a sequence diagram of CEC commands when the BD player is turned on and when playback is started in the home theater system according to Embodiment 1 of the present invention. In the home theater system which concerns on Embodiment 1 of this invention, it is a figure which shows the flow of the video data and audio | voice data when the video | video and audio | voice reproduced | regenerated with the BD player are output. It is a figure which shows an example of a structure of the home theater system which concerns on Embodiment 2 of this invention. It is a figure which shows an example of a detailed structure of AV amplifier which concerns on Embodiment 2 of this invention. In the home theater system concerning Embodiment 2 of this invention, it is a sequence diagram of a CEC command when the power supply of a BD player is turned on and reproduction | regeneration is started. It is a figure which shows an example of a structure of the home theater system which concerns on Embodiment 3 of this invention. It is a figure which shows an example of the detailed structure of TV which concerns on Embodiment 3 of this invention. It is a figure which shows an example of a detailed structure of AV amplifier which concerns on Embodiment 3 of this invention. In the home theater system which concerns on Embodiment 3 of this invention, it is a sequence diagram of a CEC command when the power supply of a BD player is turned on and reproduction | regeneration is started. It is a figure which shows an example of a structure of the home theater system which concerns on Embodiment 4 of this invention. It is a figure which shows an example of the detailed structure of TV which concerns on Embodiment 4 of this invention. It is a figure which shows an example of a detailed structure of the BD player which concerns on Embodiment 4 of this invention. It is a sequence diagram of a CEC command when the power of the BD player according to the fourth embodiment of the present invention is turned on and when reproduction is started.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
In the home theater system according to Embodiment 1 of the present invention, when the BD player transmits an output start notification command, the TV transmits an input switching instruction to the AV amplifier according to the device information related to “two outputs” of the BD player. To do. As a result, the AV amplifier can appropriately perform input switching.

  FIG. 10 is an external view showing an example of the home theater system according to the first embodiment. FIG. 11 is a diagram illustrating an example of the configuration of the home theater system according to the first embodiment.

  FIG. 11 shows only components related to input / output among the components included in the TV 110, the AV amplifier 120, and the BD player 140. TV 110 is an example of a display device according to Embodiment 1 of the present invention. The BD player 140 is an example of a video / audio data output device according to Embodiment 1 of the present invention.

  As shown in FIG. 11, the home theater system 100 includes a TV 110, an AV amplifier 120, and a BD player 140.

  The TV 110, the AV amplifier 120, and the BD player 140 are directly connected to each other using an HDMI cable 170. Furthermore, the TV 110 and the AV amplifier 120 are connected using an audio cable 180. The AV amplifier 120 and the speaker 160 are connected using a speaker cable 190.

  Specifically, the first HDMI output unit 141 of the BD player 140 is connected to the first HDMI input unit 111 of the TV 110 via the HDMI cable 170. Also, the second HDMI output unit 142 of the BD player 140 is connected to the first HDMI input unit 122 of the AV amplifier 120 via the HDMI cable 170.

  In the HDMI standard, the first HDMI output unit 141 and the second HDMI output unit 142 of the BD player 140 are virtually recognized as separate HDMI devices. Therefore, as shown in FIG. 11, different physical addresses are assigned to the first HDMI output unit 141 and the second HDMI output unit 142, respectively. Note that physical addresses are also assigned to the TV 110 and the AV amplifier 120 as in the prior art.

  In the present embodiment, the first HDMI output unit 141 of the BD player 140 corresponds to CEC and can transmit and receive CEC messages. On the other hand, the second HDMI output unit 142 of the BD player 140 does not support CEC and cannot transmit / receive CEC messages.

  Next, details of the TV 110, the AV amplifier 120, and the BD player 140 shown in FIGS. 10 and 11 will be described with reference to FIGS. In each figure, the flow of video data or audio data is represented by solid arrows, and the flow of control information such as CEC commands is represented by dotted arrows.

  FIG. 12 is a diagram illustrating an example of a detailed configuration of the TV according to the first embodiment. As shown in FIG. 12, the TV 110 includes a first HDMI input unit 111, a second HDMI input unit 112, an audio output unit 113, a CEC communication unit 114, a device information holding unit 115, a determination unit 116, and an input switching. A unit 117 and a display unit 118.

  The first HDMI input unit 111 and the second HDMI input unit 112 have an HDMI input terminal, and input at least one of video data and audio data transmitted via the HDMI cable 170 to the TV 110. The first HDMI input unit 111 and the second HDMI input unit 112 input and output CEC commands.

  Note that the CEC signal line for transmitting the CEC command input / output through the first HDMI input unit 111 and the CEC signal line for transmitting the CEC command input / output through the second HDMI input unit 112 are connected inside the TV 110. .

  The audio output unit 113 has an audio output terminal such as an optical digital audio output terminal or a coaxial digital audio output terminal, and outputs audio data such as optical digital audio data.

  The CEC communication unit 114 transmits or receives a CEC command to another HDMI-connected device via the first HDMI input unit 111 or the second HDMI input unit 112. The transmission / reception of the CEC command is performed using a logical address for identifying each device. This logical address is an example of identification information for identifying each HDMI-connected device.

  In particular, when the CEC communication unit 114 is notified of the determination result that the logical addresses match from the determination unit 116, the input switching is performed by adding the physical address held in association with the logical address to the device information holding unit 115. An instruction command is transmitted to the AV amplifier 120. Here, the input switching instruction command is, for example, a <Set Stream Path> command.

  The device information holding unit 115 holds the logical address of the BD player 140 and the physical address assigned to the second HDMI output unit 142 of the BD player 140 in association with each other. Specifically, when the CEC communication unit 114 receives a device information notification command from the BD player 140, the device information holding unit 115 holds a logical address and a physical address in association with each other. A parameter indicating that the BD player 140 outputs video data and audio data using at least two HDMI output units and a physical address assigned to the second HDMI output unit 142 are added to the device information notification command. Has been.

  When the CEC communication unit 114 receives the output start notification command, the determination unit 116 determines whether the logical address of the device that has transmitted the output start notification command matches the logical address held in the device information holding unit 115. Determine.

  The input switching unit 117 inputs video data to be displayed on the display unit 118 according to a CEC command received by the CEC communication unit 114 or a user instruction received from a user via an input switching receiving unit such as a remote controller. Switch. Specifically, the input switching unit 117 is one of video data input from each of the first HDMI input unit 111 and the second HDMI input unit 112 by, for example, mechanically or electrically switching the connection of signal lines. Is output to the display unit 118.

  More specifically, when the CEC communication unit 114 receives the output start notification command, the input switching unit 117 switches the input according to the physical address added to the output start notification command.

  Note that switching the input includes the case where the input is not actually switched because the input before the switching and the input after the switching are the same.

  The display unit 118 displays a video based on the video data output from the input switching unit 117. Specifically, the display unit 118 displays video by decoding encoded video data and controlling light emitting elements and the like according to the decoded video data, for example.

  FIG. 13 is a diagram illustrating an example of a detailed configuration of the AV amplifier according to the first embodiment. The AV amplifier 120 shown here has the same function as the conventional AV amplifier 20. Specifically, as illustrated in FIG. 13, the AV amplifier 120 includes an HDMI output unit 121, a first HDMI input unit 122, a second HDMI input unit 123, an audio input unit 124, a speaker output unit 125, and a CEC. A communication unit 126 and an input switching unit 127 are provided.

  The HDMI output unit 121 has an HDMI output terminal, and outputs at least one of video data and audio data. The HDMI output unit 121 inputs and outputs CEC commands.

  The first HDMI input unit 122 and the second HDMI input unit 123 have HDMI input terminals, and input at least one of video data and audio data transmitted via the HDMI cable 170 to the AV amplifier 120. The first HDMI input unit 122 and the second HDMI input unit 123 input and output CEC commands.

  A CEC signal line for transmitting a CEC command input / output through the first HDMI input unit 122, a CEC signal line for transmitting a CEC command input / output through the second HDMI input unit 123, and an input / output through the HDMI output unit 121. A CEC signal line for transmitting a CEC command is connected inside the AV amplifier 120.

  The audio input unit 124 has an audio input terminal such as an optical digital audio input terminal or a coaxial digital audio input terminal, and inputs audio data transmitted via the audio cable 180 to the AV amplifier 120.

  The speaker output unit 125 converts audio data into analog data. And the speaker output part 125 outputs the audio | voice after analog conversion to the speaker 160 via the speaker cable 190. FIG.

  The CEC communication unit 126 transmits or receives a CEC command to another HDMI-connected device via the HDMI output unit 121, the first HDMI input unit 122, or the second HDMI input unit 123.

  The input switching unit 127 inputs audio data to be output to the speaker output unit 125 in accordance with a CEC command received by the CEC communication unit 126 or a user instruction received from the user via an input switching receiving unit such as a remote controller. Switch. Specifically, the input switching unit 127 is input from each of the first HDMI input unit 122, the second HDMI input unit 123, and the audio input unit 124, for example, by switching the connection of signal lines mechanically or electrically. One of the audio data is output to the speaker output unit 125.

  Similarly to the input switching unit 117 included in the TV 110, the input switching unit 127 switches the input according to the physical address added to the output start notification command when receiving the output start notification command. Furthermore, when the input switching unit 127 receives an input switching instruction command, the input switching unit 127 switches the input according to the physical address added to the input switching instruction command.

  FIG. 14 is a diagram illustrating an example of a detailed configuration of the BD player according to the first embodiment. As shown in FIG. 14, the BD player 140 includes a first HDMI output unit 141, a second HDMI output unit 142, a CEC communication unit 143, and a playback unit 144.

  The first HDMI output unit 141 and the second HDMI output unit 142 have HDMI output terminals, and output at least one of video data and audio data reproduced by the reproduction unit 144. The first HDMI output unit 141 inputs and outputs CEC commands.

  The CEC communication unit 143 transmits or receives a CEC command to another HDMI-connected device via the first HDMI output unit 141. Specifically, the CEC communication unit 143, for example, outputs an output start notification command to which the physical address of the first HDMI output unit 141 corresponding to CEC is added when content playback is started by the playback unit 144. Send to all devices

  Here, the output start notification command is a CEC command indicating that output of video data and audio data is started. Specifically, the output start notification command is, for example, an <Active Source> command.

  Further, the CEC communication unit 143 transmits a device information notification command for notifying device information to the TV 110 via the first HDMI output unit 141.

  Here, the device information notification command includes information indicating that video data and audio data are output using two HDMI output units, and a physical address assigned to the second HDMI output unit 142 that does not support CEC. Added. Further, the device information notification command is, for example, a <Notify Capability> command.

  Note that the CEC communication unit 143 does not transmit / receive a CEC command via the second HDMI output unit 142.

  The playback unit 144 plays back content recorded on a recording medium such as a BD, and generates video data and audio data. Specifically, the playback unit 144 generates video data and audio data, for example, by decoding encoded content.

  Next, an input switching control method used in the home theater system 100 configured as described above will be described with reference to FIGS. 15 and 16. Specifically, a one-touch play operation by the home theater system 100 will be described.

  The operation of the AV amplifier 120 is the same as the operation of the conventional AV amplifier 20. The operation of the TV 110 is the same as the operation of the conventional TV 10 except for the operation related to the one-touch play. The operation of the BD player 140 is the same as the operation of the conventional BD player 40 except for the operation related to the one-touch play.

  FIG. 15 is a sequence diagram of CEC commands when the BD player is turned on and playback is started in the home theater system according to the first embodiment. FIG. 16 is a diagram illustrating a flow of video data and audio data when video and audio reproduced by a BD player are output in the home theater system according to Embodiment 1.

(Operation when the BD player 140 is turned on)
First, when the power is turned on, the CEC communication unit 143 of the BD player 140 transmits a <Notify Capability> command from the first HDMI output unit 141 to the TV 110 (S101). At this time, the <Notify Capability> command includes a parameter ““ with two outputs ”” indicating that the BD player 140 outputs video data and audio data using two HDMI output units, and a second HDMI output unit. 142 physical address [2.1.0.0] is added. Note that the <Notify Capability> command is not a standard command defined in the HDMI standard, but a vendor-defined command.

  Subsequently, the CEC communication unit 114 of the TV 110 receives the <Notify Capability> command transmitted from the BD player 140 and notifies the device information holding unit 115 of it. The device information holding unit 115 then adds the parameter [“with two outputs”] and the physical address [2.1.0.0] added to the received <Notify Capability> command to the <Notify Capability> command. It is stored in association with the logical address of the transmission source device (BD player 140) (S102).

(One-touch play operation at the start of playback of the BD player 140)
When reproduction of the BD player 140 is started, the CEC communication unit 143 of the BD player 140 transmits an <Active Source> command to all the devices connected by HDMI (S103). The physical address [1.0.0.0] of the first HDMI output unit 141 of the BD player 140 is added to the <Active Source> command.

  The input switching unit 127 of the AV amplifier 120 switches the input to the input from the voice input unit 124 according to the physical address [1.0.0.0] added to the received <Active Source> command (S104).

  In addition, the input switching unit 117 of the TV 110 inputs the first HDMI input unit 111 according to the first numerical value from the left of the physical address [1.0.0.0] added to the received <Active Source> command. (S105).

  At the same time, whether the determination unit 116 of the TV 110 holds the logical address of the BD player 140 that is the transmission source device of the <Active Source> command in the device information holding unit 115 in association with the parameter [“with two outputs”]. It is determined whether or not, and the determination result is notified to the CEC communication unit 114 (S106). Here, since the logical address of the BD player 140 is held in association with the parameter [“with two outputs”], the CEC communication unit 114 of the second HDMI output unit 142 corresponding to the logical address of the BD player 140 is stored. A <Set Stream Path> command to which the physical address [2.1.0.0] is added is transmitted to all devices (S107).

  Subsequently, the CEC communication unit 126 of the AV amplifier 120 receives the <Set Stream Path> command, and notifies the input switching unit 127 of the received <Set Stream Path> command. Then, the input switching unit 127 inputs from the first HDMI input unit 122 according to the second numerical value from the left of the physical address [2.1.0.0] added to the received <Set Stream Path> command. The input is switched to (S108).

  At this time, the <Set Stream Path> command is also transmitted to the second HDMI output unit 142 of the BD player 140. However, since the second HDMI output unit 142 does not support CEC, the process according to the <Set Stream Path> command is not executed. That is, the <Active Source> command to which the physical address of the second HDMI output unit 142 is added is not transmitted.

  As a result of such operations, video data and audio data flow as shown in FIG. That is, high-definition video data (for example, 3D video data) is transmitted from the first HDMI output unit 141 of the BD player 140 to the first HDMI input unit 111 of the TV 110. Also, high-quality audio data (eg, 7.1 channel surround audio data) is transmitted from the second HDMI output unit 142 of the BD player 140 to the first HDMI input unit 122 of the AV amplifier 120.

  Note that the BD player 140 may output audio data (for example, 2-channel audio data) together with the high-definition video data from the first HDMI output unit 141. Further, the BD player 140 may output video data (for example, 2D normal video data or black screen data) together with the high-quality audio data from the second HDMI output unit 142.

  With the above operation, even if the user does not manually switch the input of each device, the home theater system 100 uses the TV 110 and the AV amplifier 120 for the high-definition video and high-definition sound that the BD player 140 reproduces. Input switching necessary for viewing can be automatically performed. At this time, a new function is unnecessary for the AV amplifier, and the home theater system 100 can appropriately perform input switching even if the conventional AV amplifier is used as it is.

(Embodiment 2)
Next, Embodiment 2 of the present invention will be described in detail with reference to the drawings.

  In the home theater system according to Embodiment 2 of the present invention, when the BD player transmits an output start notification command, the AV amplifier does not perform input switching according to the device information related to “two outputs” of the BD player. As a result, the AV amplifier can suppress unnecessary input switching.

  FIG. 17 is a diagram illustrating an example of a configuration of a home theater system according to the second embodiment. FIG. 18 is a diagram illustrating an example of a detailed configuration of the AV amplifier according to the second embodiment.

  Note that the external view of the home theater system 200 according to the present embodiment and the detailed configuration of the TV and BD player are the same as those shown in FIG. 10, FIG. 12, or FIG. In FIG. 17 and FIG. 18, the same components as those in FIG. 11 or FIG.

  TV 110 is an example of a display device according to Embodiment 2 of the present invention. The BD player 140 is an example of a video / audio data output device according to Embodiment 2 of the present invention. AV amplifier 220 is an example of an audio output device according to Embodiment 2 of the present invention.

  As shown in FIG. 17, the home theater system 200 includes a TV 110, an AV amplifier 220, and a BD player 140. As shown in FIG. 18, the AV amplifier 220 includes an HDMI output unit 121, a first HDMI input unit 122, a second HDMI input unit 123, an audio input unit 124, a speaker output unit 125, and a CEC communication unit 126. A device information holding unit 221, a determination unit 222, and an input switching unit 223.

  The device information holding unit 221 holds the logical address of the BD player 140 and the physical address assigned to the second HDMI output unit 142 of the BD player 140 in association with each other. Specifically, when the CEC communication unit 126 receives a device information notification command from the BD player 140, the device information holding unit 221 holds a logical address and a physical address in association with each other. A parameter indicating that the BD player 140 includes at least two HDMI output units and a physical address assigned to the second HDMI output unit 142 are added to the device information notification command.

  When the CEC communication unit 126 receives the output start notification command, the determination unit 222 determines whether or not the logical address of the device that has transmitted the output start notification command matches the logical address held in the device information holding unit 221. Determine.

  The input switching unit 223 switches the input of audio data to be output to the speaker output unit 125 according to a CEC command or a user instruction, similarly to the input switching unit 127 in the first embodiment. However, when the input switching unit 223 receives the output start notification command, the input switching unit 223 switches the input according to the physical address added to the output notification command only when the determination unit 222 determines that the logical addresses do not match. In other words, when the input switching unit 223 receives the output start notification command, when the determination unit 222 determines that the logical addresses match, the input switching unit 223 does not switch the input according to the physical address added to the output notification command.

  Next, an input switching control method used in the home theater system 200 configured as described above will be described with reference to FIG. Specifically, the one-touch play operation by the home theater system 200 will be described.

  FIG. 19 is a sequence diagram of CEC commands when the BD player is turned on and when playback is started in the home theater system according to the second embodiment.

(Operation when the BD player 140 is turned on)
First, when the power is turned on, the CEC communication unit 143 of the BD player 140 transmits a <Notify Capability> command from the first HDMI output unit 141 to the TV 110 and the AV amplifier 220 (S101, S201). At this time, the <Notify Capability> command includes a parameter ““ with two outputs ”” indicating that the BD player 140 outputs video data and audio data using two HDMI output units, and a second HDMI output unit. 142 physical address [2.1.0.0] is added. Note that the <Notify Capability> command is not a standard command defined in the HDMI standard, but a vendor-defined command.

  Subsequently, the CEC communication unit 114 of the TV 110 and the CEC communication unit 126 of the AV amplifier 220 receive the <Notify Capability> command and notify the device information holding unit 115 or the device information holding unit 221 respectively. The device information holding unit 115 and the device information holding unit 221 then add the parameter [“with two outputs”] and the physical address [2.1.0.0] added to the received <Notify Capability> command. <Notify Capability> The command is transmitted in association with the logical address of the transmission source device (BD player 140) (S102, S202).

(One-touch play operation at the start of playback of the BD player 140)
When reproduction of the BD player 140 is started, the CEC communication unit 143 of the BD player 140 transmits an <Active Source> command to all the devices connected by HDMI (S103). The physical address [1.0.0.0] of the first HDMI output unit 141 of the BD player 140 is added to the <Active Source> command.

  Whether the determination unit 222 of the AV amplifier 220 holds the logical address of the BD player 140 that is the transmission source device of the <Active Source> command in the device information holding unit 115 in association with the parameter [“with two outputs”]. It is determined whether or not, and the determination result is notified to the input switching unit 223 (S203). Here, the input switching unit 223 does not perform input switching according to the determination result that the logical address of the BD player 140 is held in the device information holding unit 115 in association with the parameter [“with two outputs”].

The operations in steps S105 to S108 are the same as those in FIG.
As a result of such operations, video data and audio data flow in the same manner as in the first embodiment (FIG. 16). That is, high-definition video data (for example, 3D video data) is transmitted from the first HDMI output unit 141 of the BD player 140 to the TV 110. Further, high-definition audio data (for example, 7.1 channel surround audio data) is transmitted from the second HDMI output unit 142 of the BD player 140 to the AV amplifier 220.

  Note that the BD player 140 may output audio data (for example, 2-channel audio data) together with the high-definition video data from the first HDMI output unit 141. Further, the BD player 140 may output video data (for example, 2D normal video data or black screen data) together with the high-quality audio data from the second HDMI output unit 142.

  With the above operation, the home theater system 200 uses the TV 110 and the AV amplifier 220 to reproduce high-definition video and high-definition audio reproduced by the BD player 140 even if the user does not manually switch input of each device. Input switching necessary for viewing can be automatically performed.

  Furthermore, when receiving the <Active Source> command from the BD player 140, the AV amplifier 220 does not switch the input to a voice input (voice from the TV 110) for a moment. That is, the AV amplifier 220 can suppress unnecessary input switching.

(Embodiment 3)
Next, Embodiment 3 of the present invention will be described in detail with reference to the drawings.

  In the home theater system according to Embodiment 3 of the present invention, when the BD player transmits an output start notification command, the AV amplifier performs input switching according to the device information related to “two outputs” of the BD player. As a result, the AV amplifier can appropriately perform input switching.

  FIG. 20 is a diagram illustrating an example of a configuration of a home theater system according to the third embodiment. FIG. 21 is a diagram illustrating an example of a detailed configuration of the TV according to the third embodiment. FIG. 22 is a diagram illustrating an example of a detailed configuration of the AV amplifier according to the third embodiment.

  Note that an external view of the home theater system 300 according to the present embodiment and a detailed configuration of the BD player are the same as those in FIG. 10 or FIG. 20 to 22, the same components as those in FIGS. 11 to 13 or 18 are denoted by the same reference numerals, and the description thereof is omitted.

  The BD player 140 is an example of a video / audio data output device according to Embodiment 3 of the present invention. AV amplifier 320 is an example of an audio output device according to Embodiment 3 of the present invention. TV 310 is an example of a display device according to Embodiment 3 of the present invention.

  As shown in FIG. 20, the home theater system 300 includes a TV 310, an AV amplifier 320, and a BD player 140.

  The TV 310 is the same as the conventional TV 10. Specifically, as illustrated in FIG. 21, the TV 310 includes a first HDMI input unit 111, a second HDMI input unit 112, an audio output unit 113, an input switching unit 117, a display unit 118, a CEC communication unit 311, and the like. Is provided.

  The CEC communication unit 311 performs the same processing as the CEC communication unit 114 in the first embodiment. However, unlike the CEC communication unit 114, the CEC communication unit 311 does not transmit an input switching instruction command according to the determination result by the determination unit.

  As shown in FIG. 22, the AV amplifier 320 includes an HDMI output unit 121, a first HDMI input unit 122, a second HDMI input unit 123, an audio input unit 124, a speaker output unit 125, a CEC communication unit 126, A device information holding unit 221, a determination unit 222, and an input switching unit 321 are provided.

  Similar to the input switching unit 127 in the first embodiment, the input switching unit 321 switches input of audio data to be output to the speaker output unit 125 according to a CEC command or a user instruction. However, when the input switching unit 321 receives the output start notification command, the physical address held in the device information holding unit 221 in association with the logical address when the determination unit 222 determines that the logical addresses match. Switch input according to.

  Next, an input switching control method used in the home theater system 300 configured as described above will be described with reference to FIG. Specifically, a one-touch play operation by the home theater system 300 will be described.

  FIG. 23 is a sequence diagram of a CEC command when the BD player is turned on and playback is started in the home theater system according to the third embodiment.

(Operation when the BD player 140 is turned on)
First, when the power is turned on, the CEC communication unit 143 of the BD player 140 transmits a <Notify Capability> command from the first HDMI output unit 141 to the AV amplifier 320 (S201). At this time, the <Notify Capability> command includes a parameter ““ with two outputs ”” indicating that the BD player 140 outputs video data and audio data using two HDMI output units, and a second HDMI output unit. 142 physical address [2.1.0.0] is added. Note that the <Notify Capability> command is not a standard command defined in the HDMI standard, but a vendor-defined command.

  Subsequently, the CEC communication unit 126 of the AV amplifier 320 receives the <Notify Capability> command and notifies the device information holding unit 221 of it. The device information holding unit 221 then adds the parameter [“with two outputs”] and the physical address [2.1.0.0] added to the received <Notify Capability> command to the <Notify Capability> command. It is stored in association with the logical address of the transmission source device (BD player 140) (S202).

(One-touch play operation at the start of playback of the BD player 140)
When reproduction of the BD player 140 is started, the CEC communication unit 143 of the BD player 140 transmits an <Active Source> command to all the devices connected by HDMI (S103). The physical address [1.0.0.0] of the first HDMI output unit 141 of the BD player 140 is added to the <Active Source> command.

  Whether the determination unit 222 of the AV amplifier 320 holds the logical address of the BD player 140 that is the transmission source device of the <Active Source> command in the device information holding unit 115 in association with the parameter [“with two outputs”]. It is determined whether or not, and the determination result is notified to the input switching unit 223 (S203). Here, since the logical address of the BD player 140 is held in association with the parameter [“with two outputs”], the input switching unit 223 has the second HDMI output unit 142 corresponding to the logical address of the BD player 140. In accordance with the physical address [2.1.0.0], the input is switched to the input from the first HDMI input unit 122 (S301).

  Also, the input switching unit 117 of the TV 310 inputs the first HDMI input unit 111 according to the first numerical value from the left of the physical address [1.0.0.0] added to the received <Active Source> command. (S105).

  As a result of such operations, video data and audio data flow in the same manner as in the first embodiment (FIG. 16). That is, high-definition video data (for example, 3D video data) is transmitted from the first HDMI output unit 141 of the BD player 140 to the TV 310. Further, high-definition audio data (for example, 7.1 channel surround audio data) is transmitted from the second HDMI output unit 142 of the BD player 140 to the AV amplifier 320.

  Note that the BD player 140 may output audio data (for example, 2-channel audio data) together with the high-definition video data from the first HDMI output unit 141. Further, the BD player 140 may output video data (for example, 2D normal video data or black screen data) together with the high-quality audio data from the second HDMI output unit 142.

  With the above operation, the home theater system 300 uses the TV 310 and the AV amplifier 320 to reproduce high-definition video and high-definition audio reproduced by the BD player 140 even if the user does not manually switch input of each device. Input switching necessary for viewing can be automatically performed.

  Further, when receiving the <Active Source> command from the BD player 140, the AV amplifier 320 does not switch the input to a voice input (voice from the TV 310) for a moment. That is, the AV amplifier 320 can suppress unnecessary input switching.

  Furthermore, when the TV 310 receives the <Active Source> command from the BD player 140, the TV 310 needs to transmit a <Set Stream Path> command to which the physical address of the second HDMI output unit 142 of the BD player 140 is added to the AV amplifier 320. There is no. Therefore, the home theater system 300 can appropriately perform input switching even if the conventional TV is used as it is.

(Embodiment 4)
Next, a fourth embodiment of the present invention will be described in detail with reference to the drawings.

  The home theater system according to Embodiment 4 of the present invention appropriately switches input even when only the HDMI output unit connected to the AV amplifier among the two HDMI output units provided in the BD player supports CEC. It can be performed.

  FIG. 24 is a diagram illustrating an example of a configuration of a home theater system according to the fourth embodiment. FIG. 25 is a diagram illustrating an example of a detailed configuration of a TV according to the fourth embodiment. FIG. 26 is a diagram illustrating an example of a detailed configuration of the BD player according to the fourth embodiment.

  Note that an external view of the home theater system 400 according to the present embodiment and a diagram illustrating a detailed configuration of the AV amplifier are the same as those in FIG. 10 or FIG. 24 to 26, the same components as those in FIG. 11, FIG. 12, or FIG.

  TV 410 is an example of a display device according to Embodiment 4 of the present invention. The BD player 440 is an example of a video / audio data output device according to Embodiment 4 of the present invention.

  As shown in FIG. 24, the home theater system 400 includes a TV 410, an AV amplifier 120, and a BD player 440.

  As shown in FIG. 25, the TV 410 includes a first HDMI input unit 111, a second HDMI input unit 112, an audio output unit 113, a CEC communication unit 114, a device information holding unit 115, a determination unit 116, and input switching. A unit 411 and a display unit 118.

  Similar to the input switching unit 117 in the first embodiment, the input switching unit 411 switches input of video data to be output to the display unit 118 according to a CEC command or a user instruction. However, when the input switching unit 411 receives the output start notification command, the physical address held in the device information holding unit 115 in association with the logical address when the determination unit 116 determines that the logical addresses match. Switch input according to.

  As shown in FIG. 26, the BD player 440 includes a first HDMI output unit 141, a second HDMI output unit 142, a CEC communication unit 441, and a playback unit 144.

  The first HDMI output unit 141 supports CEC, and the second HDMI output unit 142 does not support CEC.

  The CEC communication unit 441 transmits or receives a CEC command to other HDMI-connected devices via the second HDMI output unit 142. Specifically, the CEC communication unit 441, for example, when the playback of the content is started by the playback unit 144, all the <Active Source> commands to which the physical address of the second HDMI output unit 142 is added are HDMI-connected. Send to device. Note that the CEC communication unit 143 does not transmit / receive a CEC command via the first HDMI output unit 141.

  Next, an input switching control method used in the home theater system 400 configured as described above will be described with reference to FIG. Specifically, a one-touch play operation by the home theater system 400 will be described.

  FIG. 27 is a sequence diagram of a CEC command when the BD player is turned on and playback is started in the home theater system according to the fourth embodiment.

(Operation when the BD player 440 is turned on)
First, when the power is turned on, the CEC communication unit 441 of the BD player 440 transmits a <Notify Capability> command from the second HDMI output unit 142 to the TV 410 (S401). At this time, the <Notify Capability> command includes a parameter “[with two outputs]” indicating that the BD player 440 outputs video data and audio data using two HDMI output units, and the first HDMI output unit. 141 physical address [1.0.0.0] is added. Note that the <Notify Capability> command is not a standard command defined in the HDMI standard, but a vendor-defined command.

  Subsequently, the CEC communication unit 114 of the TV 410 receives the <Notify Capability> command and notifies the device information holding unit 221 of it. The device information holding unit 221 then adds the parameter [“with two outputs”] and the physical address [1.0.0.0] added to the received command to the source device (<Notify Capability>) command ( It is stored in correspondence with the logical address of the BD player 440) (S402).

(One-touch play operation when starting playback of the BD player 440)
When playback of the BD player 440 is started, the CEC communication unit 441 of the BD player 440 transmits an <Active Source> command to all the devices connected by HDMI (S403). The physical address [2.1.0.0] of the second HDMI output unit 142 of the BD player 440 is added to the <Active Source> command.

  The input switching unit 127 of the AV amplifier 120 inputs the first HDMI input unit 122 according to the second numerical value from the left of the physical address [2.1.0.0] added to the received <Active Source> command. (S404).

  Whether the determination unit 116 of the TV 410 holds the logical address of the BD player 440 that is the transmission source device of the received <Active Source> command in the device information holding unit 115 in association with the parameter [“with two outputs”]. It is determined whether or not, and the determination result is notified to the CEC communication unit 114 (S405). Here, since the logical address of the BD player 440 is held in association with the parameter [“with two outputs”], the input switching unit 411 holds the first HDMI held in association with the logical address of the BD player 440. The physical address [1.0.0.0] of the output unit 141 is acquired. Then, the input switching unit 411 switches the input to the input from the first HDMI input unit 111 according to the first numerical value from the left of the acquired physical address [1.0.0.0] (S405).

  As a result of such operations, video data and audio data flow in the same manner as in the first embodiment (FIG. 16). That is, high-definition video data (for example, 3D video data) is transmitted from the first HDMI output unit 141 of the BD player 440 to the TV 410. Also, high-quality audio data (eg, 7.1 channel surround audio data) is transmitted from the second HDMI output unit 142 of the BD player 440 to the AV amplifier 120.

  Note that the BD player 440 may output audio data (for example, 2-channel audio data) from the first HDMI output unit 141 together with the high-definition video data. Further, the BD player 440 may output video data (for example, 2D normal video data or black screen data) together with the high-definition audio data from the second HDMI output unit 142.

  With the above operation, the home theater system 400 uses the TV 410 and the AV amplifier 120 to reproduce high-definition video and high-definition audio reproduced by the BD player 440 even if the user does not manually switch input of each device. Input switching necessary for viewing can be automatically performed. At this time, no new function is required for the AV amplifier, and the home theater system 400 can appropriately perform input switching even if the conventional AV amplifier is used as it is.

  As mentioned above, although the home theater system concerning the present invention was explained based on an embodiment, the present invention is not limited to these embodiments. Unless it deviates from the gist of the present invention, various modifications conceived by those skilled in the art are applied to the present embodiment, or forms constructed by combining components in different embodiments are also included in the scope of the present invention. .

  For example, the connection forms and physical address values of the TV 110, the AV amplifier 120, and the BD player 140 according to Embodiments 1 to 4 are examples, and different connection forms and physical address values may be used.

  In the first to fourth embodiments, the BD player transmits the <Notify Capability> command when the power is turned on. However, the BD player may transmit the <Notify Capability> command at another timing instead of when the power is turned on. For example, when a device information request command for inquiring device information is received from a TV or AV amplifier, the BD player may transmit a <Notify Capability> command. In this case, for example, when the power of the TV or AV amplifier is turned on, the TV or AV amplifier may transmit a device information request command for inquiring device information to the BD player.

  In the first to fourth embodiments, the BD player transmits the <Notify Capability> command to the TV or AV amplifier. However, the BD player transmits the <Notify Capability> command to all HDMI-connected devices (Broadcast). May be.

  In the first to fourth embodiments, the <Notify Capability> command indicates that the BD player outputs video data and audio data by using two HDMI output units [“with two outputs”]. Although the parameter and the physical address of the first HDMI output unit or the second HDMI output unit are added, other information may be added. If it is indicated that video data and audio data are output using two or more HDMI output units, the parameter may be different from the parameter ““ with two outputs ””.

  In the first or second embodiment, the TV transmits the <Set Stream Path> command as the input switching instruction command, but may be a command different from the <Set Stream Path> command. For example, the input switching instruction command may be a vendor-specific definition command that instructs input switching.

  In the above embodiment, the BD player performs the one-touch play operation at the start of reproduction. However, for example, the BD player may perform the one-touch play operation when a menu is displayed.

  In the first to fourth embodiments, the home theater system includes the BD player. However, the video data and the audio are output using two HDMI output units such as a BD recorder or a set top box (STB). Another video / audio data output device for outputting data may be provided instead of the BD player.

  Also, the TV does not necessarily include an audio output unit. The TV may include a tuner (internal tuner) for receiving broadcast signals such as digital broadcast, analog broadcast, satellite broadcast, cable television broadcast, or IP broadcast.

  In the first to fourth embodiments, the number of HDMI input units included in the TV and the AV amplifier is two. However, if the number of TVs is two or more and the number of AV amplifiers is one or more, how many You may prepare.

  In the first to fourth embodiments, the TV or AV amplifier holds the device information according to the information added to the <Notify Capability> command. However, the TV or AV amplifier may hold the device information according to the information acquired by a different method. Good. For example, the TV or AV amplifier may hold the device information according to information set by the user via a user interface such as a setting registration screen. That is, the home theater system according to the present invention can appropriately operate the one-touch play if the device information is held in advance before the one-touch play is executed.

  In the first to fourth embodiments, the device information holding unit holds a parameter indicating that video data and audio data are output using two HDMI output units. However, the device information holding unit does not necessarily need to hold this parameter. There is no. For example, when the device information holding unit holds only device information of a device that outputs video data and audio data using two HDMI output units, the device information holding unit needs to hold the above parameters. Absent. In this case, the determination unit may determine whether or not the device information holding unit holds the logical address of the transmission source device of the <Active Source> command.

  Moreover, in the said Embodiment 1-4, each apparatus with which a home theater system is provided was connected with the HDMI cable, However, It is not necessarily necessary to connect with a cable. For example, each device included in the home theater system may be connected by a wireless technology compliant with the HDMI standard.

  Moreover, in the said Embodiment 1-4, the case where this invention was applied to a home theater system was demonstrated. However, the present invention can be applied to an AV system including a display device, an audio output device, and a video / audio data output device regardless of whether it is for home use or business use.

  The present invention can be realized not only as such a display device, an audio output device, or a video / audio data output device, but also as input switching with the operations of the characteristic components included in each of these devices as a step. It can be realized as a control method.

  The present invention can be applied to an AV system such as a home theater system that can automatically and appropriately switch the input of each device when video data and audio data are output using two HDMI output units.

1, 2, 100, 200, 300, 400 Home theater system 10, 110, 310, 410 TV
11, 22, 111, 122 1st HDMI input section 12, 23, 112, 123 2nd HDMI input section 13, 113 Audio output section 20, 120, 220, 320 AV amplifier 21, 31, 121 121 HDMI output section 24, 124 Audio input Unit 25, 125 speaker output unit 30, 40, 140, 440 BD player 41, 141 first HDMI output unit 42, 142 second HDMI output unit 60, 160 speaker 70, 170 HDMI cable 80, 180 audio cable 90, 190 speaker cable 114 126, 143, 311, 441 CEC communication unit 115, 221 Device information holding unit 116, 222 Judgment unit 117, 127, 223, 321, 411 Input switching unit 118 Display unit 144 Playback unit

Claims (15)

An audio output device and an audio / video data output device that outputs video data and audio data using two HDMI output units are respectively connected via HDMI (High-Definition Multimedia Interface), and the video / audio data output A display device for displaying video included in video data output from the device,
Identification information for identifying the video / audio data output device and an HDMI output unit that does not support CEC (Consumer Electronics Control) of the two HDMI output units, and at least audio data is transmitted to the audio output device. A device information holding unit that holds the physical address assigned to the HDMI output unit that outputs
A CEC communication unit that transmits / receives a CEC command to / from the audio / video data output device or the audio output device;
An input switching unit that switches input in accordance with a physical address added to the output start notification command when the CEC communication unit receives an output start notification command indicating that output of video data and audio data is started;
When the CEC communication unit receives the output start notification command, a determination is made as to whether or not the identification information of the device that has transmitted the output start notification command matches the identification information held in the device information holding unit With
When the determination unit determines that the identification information matches, the CEC communication unit instructs the device information holding unit to switch the input to which the physical address held in association with the identification information is added. A display device that transmits an input switching instruction command to the audio output device. The device information holding unit transmits the device information notification command when the CEC communication unit receives a device information notification command for notifying output of video data and audio data using two HDMI output units. The display device according to claim 1, wherein the display device retains a physical address added to the device information notification command in association with the identification information of the device. The display device according to claim 2, wherein the CEC communication unit transmits a device information request command for requesting transmission of the device information notification command to the video / audio data output device. The display device according to claim 1, wherein the input switching instruction command is a <Set Stream Path> command. An audio output device and an audio / video data output device that outputs video data and audio data using two HDMI output units are respectively connected via HDMI (High-Definition Multimedia Interface), and the video / audio data output A display device for displaying video included in video data output from the device,
Identification information for identifying the video / audio data output device and an HDMI output unit that does not support CEC (Consumer Electronics Control) of the two HDMI output units, and at least video data is displayed on the display device. A device information holding unit that holds the physical address assigned to the HDMI output unit to be output in association with each other;
A CEC communication unit that transmits / receives a CEC command to / from the audio / video data output device or the audio output device;
When the CEC communication unit receives an output start notification command indicating that output of video data and audio data is started, identification information of the device that has transmitted the output start notification command is held in the device information holding unit. A determination unit for determining whether or not the identification information matches,
When the determination unit determines that the identification information does not match, the input is switched according to the physical address added to the output start notification command, and when the determination unit determines that the identification information matches, the device information holding unit And an input switching unit that switches an input according to a physical address held in association with the identification information. The device information holding unit transmits the device information notification command when the CEC communication unit receives a device information notification command for notifying output of video data and audio data using two HDMI output units. The display device according to claim 5, wherein the display device stores the physical address added to the device information notification command in association with the identification information of the device. A video / audio data output device connected to each of the display device and the audio output device via HDMI (High-Definition Multimedia Interface) and outputting at least one of video data and audio data to each of the display device and the audio output device Because
A first HDMI output unit that outputs at least video data to the display device via HDMI;
A second HDMI output unit that outputs at least audio data to the audio output device via HDMI when the video data is output from the first HDMI output unit;
A CEC communication unit that transmits and receives the display device or the audio output device and a CEC (Consumer Electronics Control) command via one of the first HDMI output unit and the second HDMI output unit;
Physical addresses indicating connection positions assigned to the first HDMI output unit and the second HDMI output unit are different from each other.
The CEC communication unit includes information indicating that video data and audio data are output using two HDMI output units, and a physical address assigned to the other of the first HDMI output unit and the second HDMI output unit. A video / audio data output device that transmits the added device information notification command to at least one of the display device and the audio output device via one of the first HDMI output unit and the second HDMI output unit. The video / audio data output device is connected to a display device and a video / audio data output device that outputs video data and audio data using two HDMI output units via HDMI (High-Definition Multimedia Interface). An audio output device that outputs audio included in audio data output from
Identification information for identifying the video / audio data output device and an HDMI output unit that does not support CEC (Consumer Electronics Control) of the two HDMI output units, and at least audio data is transmitted to the audio output device. A device information holding unit that holds the physical address assigned to the HDMI output unit that outputs
A CEC communication unit that transmits and receives CEC commands to and from the video / audio data output device or the display device;
When the CEC communication unit receives an output start notification command indicating that output of video data and audio data is started, identification information of the device that has transmitted the output start notification command is held in the device information holding unit. A determination unit for determining whether or not the identification information matches,
When the determination unit determines that the identification information does not match, the input is switched according to the physical address added to the output start notification command, and when the determination unit determines that the identification information matches, the output start notification command An audio output device comprising: an input switching unit that does not switch input according to a physical address added to the. The device information holding unit transmits the device information notification command when the CEC communication unit receives a device information notification command for notifying output of video data and audio data using two HDMI output units. The voice output device according to claim 8, wherein the physical address added to the device information notification command is held in association with the identification information of the device. The audio output device according to claim 8, wherein the input switching unit switches input according to a physical address added to an input switching instruction command received from the display device by the CEC communication unit. The audio output device according to claim 10, wherein the input switching instruction command is a <Set Stream Path> command. The audio output according to claim 8, wherein when the determination unit determines that the identification information matches, the input switching unit switches the input according to a physical address held in the device information holding unit in association with the identification information. apparatus. In an AV system in which a display device, an audio output device, and an audio / video data output device that outputs video data and audio data using at least two HDMI output units are connected to each other via HDMI (High-Definition Multimedia Interface). An input switching control method used,
The video / audio data output device is an HDMI output unit compatible with CEC (Consumer Electronics Control) among the at least two HDMI output units, and outputs at least video data to the display device. An output start notification command transmission step for transmitting an output start notification command to the display device and the audio output device, indicating that the output of video data and audio data is started, to which the assigned physical address is added;
A first input switching step in which the display device switches an input according to a physical address added to the output start notification command transmitted in the output start notification command transmission step;
A determination step of determining whether or not the identification information of the device that has transmitted the output start notification command matches the identification information held in the device information holding unit;
When it is determined in the determination step that the identification information matches, the display device is added with a physical address held in association with the identification information in the device information holding unit, and an input switch that instructs to switch the input An input switching instruction command transmission step of transmitting an instruction command to the audio output device;
The audio output device includes a second input switching step of switching an input according to a physical address added to the input switching instruction command transmitted in the input switching instruction command transmitting step;
The device information holding unit is a physical address assigned to an HDMI output unit that does not support CEC among the at least two HDMI output units and outputs at least audio data to the audio output device. Is stored in association with the identification information of the video / audio data output device. Used in an AV system in which a display device, an audio output device, and a video / audio data output device that outputs video data and audio data using two HDMI output units are connected to each other via HDMI (High-Definition Multimedia Interface) Input switching control method,
The video / audio data output device is an HDMI output unit that supports CEC (Consumer Electronics Control) of the two HDMI output units, and is assigned to the HDMI output unit that outputs at least video data to the display device An output start notification command transmission step for transmitting an output start notification command to the display device and the audio output device indicating that the output of the video data and the audio data is started, with the added physical address,
A first input switching step in which the display device switches an input according to a physical address added to the output start notification command transmitted in the output start notification command transmission step;
A determination step of determining whether or not the identification information of the device that has transmitted the output start notification command transmitted in the output start notification command transmission step matches the identification information held in the device information holding unit. When,
A second input switching step of switching the input according to the physical address held in association with the identification information in the device information holding unit when it is determined in the determination step that the identification information matches. ,
The device information holding unit is an HDMI output unit that does not support CEC of the two HDMI output units and outputs a physical address assigned to at least the HDMI output unit that outputs audio data to the audio output device. An input switching control method stored in association with identification information of the video / audio data output device. Used in an AV system in which a display device, an audio output device, and a video / audio data output device that outputs video data and audio data using two HDMI output units are connected to each other via HDMI (High-Definition Multimedia Interface) Input switching control method,
The video / audio data output device is an HDMI output unit that supports CEC (Consumer Electronics Control) of the two HDMI output units, and outputs at least audio data to the audio output device. An output start notification command transmission step for transmitting an output start notification command to the display device and the audio output device, indicating that the output of video data and audio data is started, to which the assigned physical address is added;
A first input switching step in which the audio output device switches an input according to a physical address added to the output start notification command transmitted in the output start notification command transmission step;
A determination step of determining whether or not the identification information of the device that has transmitted the output start notification command transmitted in the output start notification command transmission step matches the identification information held in the device information holding unit; ,
A second input switching step of switching the input according to the physical address held in association with the identification information in the device information holding unit when it is determined that the identification information matches in the determination step;
The device information holding unit is an HDMI output unit that does not support CEC among the two HDMI output units and outputs a physical address assigned to at least the HDMI output unit that outputs video data to the display device. An input switching control method stored in association with the identification information of the video / audio data output device.

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