JP5085664B2 - Video / audio processing apparatus and video / audio processing method - Google Patents

Description

  The present invention relates to a video / audio processing apparatus and a video / audio processing method having a digital interface for processing signals such as video / audio.

  In recent years, television receivers as video / audio processing devices have become highly functional, and digital interfaces (for example, high-definition multimedia interface (HDMI) input terminals) that can transmit and receive video / audio signals and control signals using a single cable. ) Has been commercialized. High-Definition Multimedia Interface and HDMI are registered trademarks.

  An HDMI cable is usually provided with one (1ch) CEC (Consumer Electronics Control) control line for transmitting and receiving commands between devices. In this CEC, a command (control signal) common to each vendor is specified, and a command can be specified independently so that each vendor can expand the function of the product. In the following description, an HDMI cable provided with a CEC control line is referred to as an HDMI-CEC control line.

  Control using the HDMI-CEC control line is performed according to the following procedure. When a source device such as a recorder or a player is connected to an HDMI terminal provided in the television receiver, commands are exchanged between the television receiver and the source device, and a communication address is assigned to the source device. Next, when the command is transmitted from the television receiver, the function control of the source device is performed by designating the previously assigned address.

As a conventional technique for improving user convenience regarding HDMI-CEC control, for example, setting whether to use control by HDMI-CEC (hereinafter referred to as “CEC interlocking setting”) is selected according to user preference There is what made it possible (for example, Patent Document 1).
In this technology, when the CEC interlocking setting is turned on, the HDMI-CEC control function for all connected devices is enabled, and when the CEC interlocking setting is turned off, the HDMI-CEC control function for all connected devices. Becomes invalid.

JP 2009-71396 A (paragraph [0007] etc.)

  In recent years, attempts have been made to incorporate a source device such as a DVD player in a video / audio processing device such as a television receiver. For example, when a source device such as a DVD player is built in the video / audio processing device and an external input HDMI input terminal is provided to enable external connection of the source device, the built-in source device and external connection It is conceivable to control the source device by connecting it with a single HDMI-CEC control line.

  In this case, in the conventional technology described above, the HDMI-CEC control function of all the connected devices is simply set to either valid or invalid. There is a problem that even the source device cannot be used, and the convenience of the user is impaired. For this reason, when the control of the built-in source device is performed by a dedicated line provided separately from the HDMI-CEC control line, the cooperation function for controlling the built-in source device and the HDMI-CEC control of the externally connected source device There is a problem that it is necessary to develop a part and the cost becomes high.

  The present invention has been made to solve such problems. When one or more source devices are connected via a digital interface and controlled by a control line of the digital interface, a device control function for the source device is provided. To provide a video / audio processing apparatus and a video / audio processing method capable of preventing a source device from causing an operation unintended by a user when it can be set to either “use” or “non-use”. For the purpose.

  A video / audio processing apparatus according to an embodiment of the present invention includes a housing including a terminal to which a first source device that processes video / audio can be connected, and the video / audio processing apparatus that is disposed in the housing and processes video / audio. A second source device is connected to the terminal and the second source device via a digital interface, and the first source device and the second source device connected to the terminal are controlled by the digital interface. The second source device sends a first command indicating that its own device is in an active state to the control device. A command transmission unit configured to transmit a limited command to the control line of the digital interface, and the control device controls the device through the control line of the digital interface. A setting storage unit that stores a setting of “use” or “non-use” of a function, and the setting storage when the first command from the second source device is received through the control line. A second command indicating that the video / audio processing device or the second source device is in an active state when the device control function is set to “use”. When the device control function is set to “not used” while transmitting to the control line, the control unit does not transmit the second command.

  A video / audio processing method according to an embodiment of the present invention includes a housing including a terminal to which a first source device that processes video / audio can be connected, and the video / audio processing method that is disposed in the housing and processes video / audio. A second source device is connected to the terminal and the second source device via a digital interface, and the first source device and the second source device connected to the terminal are controlled by the digital interface. A video / audio processing method by a video / audio processing apparatus having a control device controlled via a line, wherein the second source device indicates that the second source device is in an active state. Is transmitted to the control line of the digital interface by a command whose destination is limited to the control device, and the control device controls the digital interface. When the setting of either “use” or “not use” of the device control function through a line is stored, and the first command from the second source device is received through the control line, A second command indicating that the video / audio processing device or the second source device is in an active state when the setting of the setting holding unit is confirmed and the device control function is set to “use”; When the device control function is set to “not used”, the second command is not transmitted.

  According to the present invention, when one or more source devices are connected via a digital interface and controlled by a control line of the digital interface, the device control function for the source device is either “used” or “not used”. Can be prevented from being caused by the source device.

It is a figure which shows the structure of TV with a built-in BD player of one Embodiment of this invention. It is a flowchart which shows an address acquisition operation | movement. It is a timing chart which shows an address acquisition operation. It is a flowchart which shows operation | movement when each source apparatus is operated.

  Hereinafter, a television apparatus with a built-in BD player (hereinafter referred to as “BD player built-in TV”) according to an embodiment of the video / audio processing apparatus of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing a configuration of a TV with a built-in BD player.

  As shown in FIG. 1, the TV with a built-in BD player according to this embodiment includes a display 37 for video display, an output unit such as Sony Philips Digital InterFace 40 (hereinafter referred to as “S / PDIF 40”), and information to be output to this output unit. A TV case 1 containing a functional component for generating the signal, an HDMI input terminal 19 for external connection and a power supply unit 8 provided in the TV case 1. Note that a plurality (two or more) of terminals may be provided. S / PDIF is an interface standard between devices for inputting and outputting digital audio signals.

  The power supply unit 8 AC / DC converts a primary power supply (AC 100 V) supplied from a commercial power supply such as a household wall outlet. The power supply unit 8 supplies the AC / DC converted operation power (DC +12 V, +5 V, etc.) to the BD unit 2 (second source device) and the TV unit 3.

  An external source device (for example, a DVD player 4, an AV amplifier 50, a BD player, a recorder, an AV selector, etc.) is detachably connected to the HDMI input terminal 19 for external connection via a general-purpose HDMI cable 7.

  In the TV casing 1, an HDMI cable 6 for internal wiring is connected from the HDMI input terminal 19 and wired to the TV unit 3. The HDMI cable 6 includes an HDMI-CEC control line 13, a video / audio data line 17, a hot plug detection line (HPD line), a + 5V power supply line, and the like. The HPD line is a line through which an HPD signal is sent from the control device 30 to each source device. The + 5V power supply line is a line to which a voltage of + 5V is applied to the control device 30 from the source device that is powered on.

  The HDMI-CEC control line 13 is connected to the external source device and the built-in source device by a physically common wiring (a state where one wiring is branched into two). By exchanging commands (control signals) via the HDMI-CEC control line 13, it is possible to perform operation control, switching control, and the like of source devices connected inside and outside.

  Examples of commands include vendor commands, deck control commands, play forward commands, and active source commands that are used by individual vendors for individual function control. The vendor command, deck control command, and play forward command are direct commands, and are commands that specify the destination. The deck control command is a command for controlling a device from an individual device. For example, an operation according to a button operation such as disc playback or stop from the remote controller 60 (hereinafter referred to as “remote controller 60”) to the BD unit 2. It is a command to make

  The TV unit 3 includes a control device 30, an HDMI receiver 32 to which internal HDMI cables 5 and 6 are connected, a TV tuner 35 connected to an antenna, a video / audio processing unit 36, a display 37, an S / PDIF 40, and the like. doing.

  The HDMI receiver 32 detects the connection of the built-in source device (BD unit 2) to the HDMI input terminal 29 (HDMI cable 5), and outputs the HPD signal for the BD unit 2 in which the connection is detected from the de-assert (stopped state). Functions as a hot plug detector that changes to Asserted (active state). The HPD signal is sent to the BD unit 2 through the HPD line of the HDMI cable 5.

  The HDMI receiver 32 detects the connection of the external source device (AV amplifier 50, DVD player 4, etc .: first source device) to the HDMI input terminal 19 (HDMI cable 6) and the HDMI input terminal 39, and the connection is detected. It functions as a hot plug detection unit that changes the HPD signal for the external source device that has been changed from a de-assert (stop state) to an asserted (active state). The HPD signal is sent to an external source device through the HPD line of the HDMI cables 6 and 7.

  The TV tuner 35 receives the television broadcast input from the antenna and outputs the received program video / audio to the video / audio processing unit 36. The TV tuner 35 includes at least one of a digital tuner and an analog tuner. A plurality of digital tuners or analog tuners may be mounted.

  The video / audio processing unit 36 reproduces the video / audio digital data or analog signal input from the TV tuner 35 and the video / audio digital data input from the HDMI receiver 32.

  The video / audio processing unit 36 is controlled by the control device 30 to switch data or signals input from the TV tuner 35 and the HDMI receiver 32 and output the data or signals to the display 37 and the S / PDIF 40. In addition, the video / audio processing unit 36 displays a selection screen for CEC interlocking setting on the display 37.

  The user operates an operation button (not shown) provided on the remote controller 60 or the TV housing 1 on the CEC interlocking setting selection screen displayed on the display 37 to turn ON (use) or OFF (not use) the CEC interlocking setting. Is selected, the system control unit 31 of the control device 30 sets the CEC interlocking setting (ON (use) or OFF (not use)) in the interlocking setting storage unit 34a of the memory 34. When the multi-screen display function is provided, the video / audio processing unit 36 performs playback processing so that different input sources (video sources) are displayed on the plurality of divided screens.

  The display 37 displays the video reproduced by the video / audio processing unit 36 on the screen. The S / PDIF 40 is a terminal for outputting the audio signal reproduced by the video / audio processing unit 36 to the outside. The S / PDIF 40 is connected to the AV amplifier 50 via a coaxial cable or an optical fiber cable.

  The control device 30 includes a system control unit 31, a CEC control unit 33, and a memory 34. The memory 34 has an interlocking setting storage unit 34a and an address storage unit 34b.

  The interlock setting storage unit 34a stores CEC interlocking setting (ON (use) or OFF (not use) contents, that is, setting data. In other words, the interlock setting storage unit 34a stores the HDMI-CEC for the source device. Setting data of “use” or “not use” of the device control function through the control line 13 is stored.

  In the address storage unit 34b, logical addresses “0” to “15” that can be acquired by each source device and physical addresses “1.0.0.0” and “2.0.0.0” of each HDMI, predetermined The physical address of the source device, in this example, the physical address of the BD unit 2 is stored in advance.

  The physical address assigned to each source device at the time of connection is not unique to the device, but is determined by the CEC control unit 33 of the control device 30 according to the connection position (connection port) of the device and assigned to each source device. For example, “1.0.0.0” is assigned to the BD unit 2 as a physical address of a port to which the HDMI cable 5 is connected, and the AV amplifier 50 connected to the outside is connected to the HDMI cable 6. For example, “2.0.0.0” is assigned as the physical address of the port to which the HDMI cable 6 is connected.

  The address storage unit 34b is a communication address memory capable of storing a communication address (a pair of a physical address and a logical address of the source device) determined and notified by the source device through a communication address acquisition operation.

  The system control unit 31 controls the TV unit 3 in accordance with the remote control operation command received by the reception unit 10 and selects a remote control operation command (playback operation command to the BD unit 2 or CEC interlocking setting selection). Operation command) Passed to CEC control unit 33. If the command is a reproduction operation command to the BD unit 2, the system control unit 31 controls the video / audio processing unit 36 to reproduce the video / audio data input from the BD unit 2, and displays the video signal. 37, and the audio signal is output to the S / PDIF 40.

  The CEC control unit 33 controls each unit through the HDMI-CEC control line 13 which is a common control line from the HDMI cables 5 and 6 according to the received command.

If the command is a reproduction operation command to the BD unit 2, the CEC control unit 33 transmits a Play command to the BD unit 2.
When a message response to the Play command instructing reproduction to the BD unit 2 (second source device) is received as a vendor command through the HDMI-CEC control line 13, the CEC control unit 33 stores the linked setting storage unit 34a. Check the setting data, and if the CEC interlocking setting is set to “ON”, that is, “use” to use the device control function by CEC control, the TV00 unit 3 or the BD unit 2 is in an active state. The active source command shown (second command) is transmitted to the HDMI-CEC control line 13 by a broadcast command.
On the other hand, when the CEC interlocking setting is set to “OFF”, that is, “not used” in which the device control function based on CEC control is not used, the CEC control unit 33 sends the active source command (second command) to the HDMI-CEC. Do not transmit to the control line 13.

  That is, when the CEC control unit 33 receives a vendor command from the BD unit 2, the setting content of the interlocking setting storage unit 34a in which “use” or “not use” is set for device control by HDMI-CEC. If the setting of the interlocking setting storage unit 34a is set to “use”, an active source command indicating that the TV unit 3 or the BD unit 2 is in an active state is transmitted, and the interlocking setting storage unit If the setting of 34a is set to “not used”, the active source command is not transmitted.

  The CEC control unit 33 extracts the communication address included in the address determination notification received from the source device through the HDMI-CEC control line 13 when the source device is connected, and stores the communication address in the address storage unit 34b. Thereafter, the CEC control unit 33 performs communication control on the source device using the communication address stored in the address storage unit 34b.

  The TV unit 3 is provided with an HDMI input terminal 29 connected to the BD unit 2 via the HDMI cable 5 and an HDMI input terminal 39 connected to the HDMI input terminal 19 via the HDMI cable 6.

  For example, a BD player unit 2 (hereinafter referred to as a “BD unit”) that reads and reproduces information recorded on a disc-shaped recording medium (such as a BD disc) such as a Blu-ray disc (hereinafter referred to as “BD”) or a DVD. 2)) or the like is connected via the internal wiring HDMI cable 5. The HDMI input terminal 29 is connected to the control device 30 via each internal wiring.

  The wiring of the HDMI cable 5 includes, for example, a hot-plug detection line (hereinafter referred to as “HPD line”), a + 5V power supply line, etc., in addition to the HDMI-CEC control line 13 and the video / audio data line 17.

  The BD unit 2 includes a CEC control unit 23, a candidate memory 21, and a holding unit 22. Examples of the BD unit 2 include not only a device that reproduces BD video / audio, but also a device that records video / audio on a BD. Blu-ray and Blu-ray Disc are registered trademarks.

  The candidate memory 21 is realized by, for example, an EEPROM that can be held even when power is not supplied. The candidate memory 21 stores in advance at least one logical address candidate that can be acquired by the BD unit 2.

  In the HDMI-CEC standard, a logical address assigned to a connected device is determined for each device type. In this example, the device type is “Playback Device” in the BD unit 2 or the like. “4”, “8”, and “11” can be acquired. In this example, it is assumed that these three addresses “4”, “8”, and “11” are stored in the candidate memory 21.

  The holding unit 22 is realized by a RAM, and holds a determined communication address (a pair of a physical address and a logical address). Since the holding unit 22 is a RAM, the communication address is held until the power supply is stopped after the address is acquired.

  When the HPD signal changes to an active state, the CEC control unit 23 reads out the physical address of the source device (BD unit 2) given according to the port and the candidate memory 21 in a predetermined order. The polling operation of the address acquisition request including the candidate of the logical address (for example, “4” or the like) is performed through the HDMI cable 5. The certain order is, for example, an order from a small value to a large value, or from a large value to a small value.

  Thereafter, when a response (ACK) indicating that the candidate logical address is in use is not received from another source device (for example, the DVD player 4), the CEC control unit 23 selects the candidate for communication logic. The communication address including the determined logical address and the physical address of the BD unit 2 is included in the address determination notification and transmitted to the CEC control unit 33 of the control device 30 through the HDMI-CEC control line 13.

  The CEC control unit 23 transmits a first command indicating that its own device (BD unit 2) is in an active state to the HDMI-CEC control line 13 with a direct command whose destination is limited to the control device 30. Functions as a transmission unit. The first command is a message response by a vendor command.

  That is, the CEC control unit 23 does not transmit an active source command defined by the CEC standard to indicate that the BD unit 2 is in an active state due to an operation such as starting the reproduction of video, and the control device 30 uses a vendor command. The CEC control unit 33 is notified directly.

  An AV amplifier 50 as an externally connected source device is connected to the HDMI input terminal 19. The AV amplifier 50 includes a candidate memory 51, a CEC control unit 53, an HDMI input terminal 59, and the like. In addition, the AV amplifier 50 includes an S / PDIF, an amplifier unit that converts and amplifies audio data input from the S / PDIF, and an audio analog signal incremented by the amplifier unit to the speaker 56. It has an audio output terminal for output. The AV amplifier 50 is a switching device that switches a source (audio signal) to be output to the speaker 56.

  The candidate memory 51 stores logical address candidates (for example, “5”, etc.). In the HDMI-CEC standard, a logical address assigned to a connected device is determined for each device type. As in this example, in the AV amplifier 50 or the like, the device type is “Audio System”. 5 ”can be acquired. In this example, this address “5” is stored in the candidate memory 51.

  When the HPD signal changes to an active state, the CEC control unit 53 and the physical address given to the AV amplifier 50 (the physical address of the own device) and the logical address candidate read from the candidate memory 51 (for example, “5”). Etc.) is performed through the HDMI cables 6 and 7.

  When a response (ACK) indicating that the candidate logical address is in use is not received from another source device (for example, the BD unit 2 or the DVD player 4), the CEC control unit 53 sets the candidate “5”. The communication address including the determined logical address and physical address of the AV amplifier 50 is included in the address determination notification and is transmitted to the CEC control unit 33 of the control device 30 through the HDMI-CEC control line 13. Send.

  While the CEC control unit 53 outputs the sound from the DVD player 4 (first source device) connected to its own device to the speaker 56, the TV unit 3 or the BD unit 2 (second source device) is active. When an active source command (second command) indicating that the state has been reached is received, it functions as a control unit that switches the output to the speaker 56 to the sound from the TV unit 3 input from the S / PDIF 40.

  A DVD player 4 as an externally connected source device is connected to the HDMI input terminal 59 of the AV amplifier 50. The DVD player 4 has a candidate memory 41, a CEC control unit 43, and the like.

  The candidate memory 41 stores in advance at least one logical address candidate that can be acquired by the DVD player 4.

  In the HDMI-CEC standard, the logical address assigned to the connected device is determined for each device type. As in this example, the device type is “Playback Device” in the DVD player 4 or the like. “4”, “8”, and “11” can be acquired. In this example, it is assumed that these three addresses “4”, “8”, and “11” are stored in the candidate memory 41.

  When the HPD signal changes to the active state, the CEC control unit 43 and a physical address candidate given to the DVD player 4 and one communication logical address candidate read from the candidate memory 41 in a certain order (for example, “ 4 ”) is performed through the HDMI cables 6 and 7.

  When a response (ACK) indicating that the candidate logical address is in use is received from another source device (for example, the BD unit 2), the CEC control unit 53 selects the next logical address candidate (for example, “8”). Etc.) and the polling operation of the address acquisition request including the address is performed again through the HDMI cables 6 and 7.

  If a response (ACK) indicating that the candidate logical address is in use is not received from another source device (for example, BD unit 2), the CEC control unit 53 uses the candidate “8” for communication. The communication address including the determined logical address “8” of the DVD player and the physical address is included in the address determination notification to the CEC control unit 33 of the control device 30 through the HDMI-CEC control line 13. Send.

  That is, when the HPD signal changes from de-assert to Asserted, the CEC control units 23, 43, and 53 read communication address candidates one by one from the candidate memories 21, 41, and 51, and use the candidates for communication. The address acquisition process is performed by polling, and the determined communication address is notified to the control device 30 through the HDMI-CEC control line 13.

(Address acquisition operation by the source device)
The address acquisition operation of this embodiment will be described with reference to FIGS. FIG. 2 is a flowchart showing the address acquisition operation by the source device, and FIG. 3 is a timing chart showing the address acquisition operation by the source device. The logical address acquisition operation by the CEC control units 23, 43, and 53 is substantially the same. Therefore, here, the operation of acquiring a logical address by the CEC control unit 23 of the built-in BD unit 2 will be described, and the description of the operation of acquiring the logical address by the CEC control units 43 and 53 will be omitted. .

  In the TV with a built-in BD player, when an AC outlet drawn from the TV casing 1 is inserted into a commercial power source such as a wall outlet at home, and the primary power is supplied to the power supply unit 8, the power supply unit 8 is used for operation. Is supplied to the BD unit 2 and the TV unit 3 (step S101).

  The CEC control unit 23 waits for the HPD signal input from the TV unit 3 through the HDMI-CEC control line 13 to be asserted (active state) (step S102).

  When power for operation is supplied from the power supply unit 8 to the TV unit 3, in the TV unit 3, the HDMI receiver 32 changes the HPD signal to the BD unit 2 from de-assert (stop state) to Asserted (active state). Change (Yes in step S102).

  When the HPD signal changes from de-assert (stop state) to Asserted (active state), the CEC control unit 23 of the BD unit 2 reads the given physical address from the candidate memory 21 (step S103). Usually, one address “4” having a small value is read from the address candidates in the candidate memory 21 (step S104), and an operation of acquiring a logical address (logical address) is performed (step S105).

  In the above-described logical address acquisition operation, the CEC control unit 23 checks whether or not the read address “4” has been acquired by another source device (in this embodiment, the DVD player 4). A polling operation for acquiring the address “4” is performed. When there is no response (ACK) from another source device after the polling operation, the CEC control unit 23 sets the address “4” as the logical address, assuming that the address “4” is not used.

  If there is a response (ACK) from another source device after the polling operation, the next candidate address “8” is read assuming that the address “4” is used. Thereafter, the same operation is performed, and when there is no reply from another source device after the polling operation, the address “8” is set as the logical address.

  For example, when the logical address is set to “4”, the CEC control unit 23 transmits the communication address including the set address “4” and the physical address to the CEC control unit 33 of the TV unit 3 as an address determination notification (step S106). ).

  The CEC control unit 33 of the TV unit 3 extracts the communication address (logical address and physical address) included in the address determination notification transmitted from the CEC control unit 23 and stores it in the address storage unit 34b. Thereafter, the CEC control unit 33 performs communication control for the BD unit 2 using the communication address stored in the address storage unit 34b.

  Next, with reference to FIG. 4, the operation when the user performs the CD playback operation by the externally connected DVD player 4 and the BD video playback operation by the BD unit 2 in the TV with built-in BD player will be described. FIG. 4 is a flowchart showing the control operation of each source device (TV unit 3, BD unit 2, AV amplifier 50, etc.).

In this TV with a built-in BD player, it is assumed that the user first sets a CD in the externally connected DVD player 4 and reproduces the content of the CD, that is, music.
When the user performs a CD playback operation in the DVD player 4, the CEC control unit 43 transmits an active source command to the AV amplifier 50 and the TV unit 3 through the HDMI-CEC control line 13.

  In the AV amplifier 50, when an active source command is received from the DVD player 4 to the CEC control unit 53 (step S201 in FIG. 4), the CEC control unit 53 switches the input source to the DVD player 4 (step S202), and the speaker 56 From, the music of the CD reproduced by the DVD player 4 is output. At this time, no video is displayed on the display 37.

Next, when the user performs a BD playback operation with the remote controller 60 in order to display a high-quality video of the BD set in the built-in BD unit 2 on the display 37, a command for the playback operation is received by the reception unit 10. It is received, input to the system control unit 31 of the TV unit 3 (step S203), and passed to the CEC control unit 33.
When the playback operation command is input, the CEC control unit 33 transmits a Play command (deck control command) to the BD unit 2 (step S204).

  In the BD unit 2, when the Play command is received, the CEC control unit 23 normally returns a response with an active source command (broadcast). In the present embodiment, the BD unit 2 becomes active. A message response indicating this is directly returned to the TV unit 3 by a vendor command, and at the same time, playback of the BD video is performed (step S205).

  In the TV unit 3, when the CEC control unit 33 receives the command (step S206), the CEC control unit 33 first determines the type and destination of the command (step S207).

  When determining the type of command, it is confirmed from the source address and destination address included in the first byte whether the received command is a broadcast command or a direct command. Whether the command is a broadcast command can be confirmed by checking whether the destination address is “F (hexadecimal number)”. In the case of a broadcast command, the transmission destination address is “F”.

  When the received command is a direct command, that is, a vendor command of a message response from the BD unit 2 (Yes in step S208), the CEC control unit 33 sends the received command to the own device (the destination is the memory). The physical address stored in (1) matches. If the transmission destination of the received command is addressed to itself, the CEC control unit 33 refers to the interlock setting storage unit 34a of the memory 34 and confirms whether the CEC interlock setting is “ON” or “OFF” (step S209). .

  When the CEC interlocking setting is “OFF” (No in step S210), that is, when the device control function is “not used”, the CEC control unit 33 indicates that the BD unit 2 is in an active state. Do not send commands. That is, the CEC control unit 33 does not perform any control operation for the HDMI-connected source device. Therefore, the AV amplifier 50 does not switch the input source, and the playback image of the BD is displayed on the display 37 while the CD music is being output from the speaker 56. This operation is an operation intended by the user.

  On the other hand, when the CEC interlocking setting is “ON”, that is, the device control function is “used” (Yes in step S210), the CEC control unit 33 indicates that the BD unit 2 is in an active state. The source command is transmitted to the HDMI-CEC control line 13 instead of the BD unit 2 (step S211).

  At this time, the CEC control unit 33 refers to the address storage unit 34b of the memory 34 to check whether or not the logical address of the BD unit 2 has been acquired, and when the logical address of the BD unit 2 has been acquired, It is confirmed whether or not the transmission source address of the received command matches the logical address of the BD unit 2 stored in the address storage unit 34b, that is, whether or not the transmission source address is the BD unit 2. When the transmission source address matches the logical address of the BD unit 2 stored in the address storage unit 34b, an active source command indicating that the BD unit 2 is activated is transmitted to the HDMI-CEC control line 13. You may do it.

  In the AV amplifier 50, when an active source command indicating that the BD unit 2 is activated is received from the HDMI-CEC control line 13, the CEC control unit 53 receives the input source from the TV unit 3, that is, S / S. The sound signal is switched from the PDIF 40 (step S212). Thereby, the audio of the video reproduced by the BD unit 2 is output from the speaker 56.

  As described above, according to this embodiment, when the user listens to music with the externally connected DVD player 4, only the BD video set in the built-in BD unit 2 is to be displayed on the display 37. When the playback operation of the BD unit 2 is performed with the remote controller 60, the control device 30 (CEC control unit 33) of the TV unit 3 sends a Play command to the BD unit 2 and sends a message response thereto to the CEC control unit of the BD unit 2. Since 33 responds with a vendor command, only the BD unit 2 can be operated without affecting other source devices connected via HDMI.

  Further, when the CEC control unit 33 receives a message response with a vendor command from the BD unit 2, the CEC control unit 33 confirms the CEC interlocking setting. If the setting is OFF, the active source command is not sent to the HDMI control line 13. The AV amplifier 50 connected via the HDMI cables 6 and 7 does not switch the input source against the user's intention. When the setting is ON, an active source command is sent to the HDMI control line 13 instead of the BD unit 2, so that the source device connected to HDMI can be CEC controlled as usual.

  That is, when the control by HDMI-CEC is set to “use”, it is possible to switch to the source device operated as usual, and even when set to “not use”, a predetermined source device (in this case, The built-in BD unit 2) in which the physical address is stored in advance can be operated.

  As a result, one or more source devices (built-in BD unit 2, externally connected AV amplifier 50, DVD player 4, etc.) are connected via HDMI cables 5, 6, 7 and these source devices are connected to HDMI-. When the device control function for the source device can be set to either “use” or “not use” when controlling with the CEC control line 13, the source device is determined by the user depending on the setting state of the device control function. Unintentional operation can be prevented.

  In addition, since it is not necessary to use a dedicated line provided separately from the HDMI-CEC control line 13 for controlling the built-in source device (BD unit 2), the built-in source device and the externally connected source device (DVD) It is not necessary to develop cooperative functional parts for the HDMI-CEC control of the player 4), and the cost can be reduced.

  Further, control between the TV unit 3 and the built-in BD unit 2 is performed by the HDMI-CEC control line 13 of the HDMI cable 5, and the HDMI-CEC control line 13 is an HDMI input terminal for external input of the TV casing 1. By sharing the HDMI cable 6 with the HDMI-CEC control line 13 of the HDMI cable 6, the circuit and the control can be simplified, and the increase in cost can be suppressed.

  Normally, in the HDMI standard, the DVD-player 4 is connected to the HDMI input terminal 19 with the HDMI-CEC control line 13 in common, so that the BD unit 2 built in the TV casing 1 transmits an active source command. However, in this case, there is a problem that the AV amplifier 50 switches the input source even when it is not necessary to switch the input source to the AV amplifier 50, and the active source broadcast when the DVD player 4 is not stopped. A problem such as stopping by a command occurred. For example, when the control function by HDMI-CEC is set to “OFF” (not used or disabled) in the setting on the TV unit 3 side, the playback video of the built-in BD unit 2 is displayed on a small window of a W window (multi-window), etc. This is the case.

  Therefore, in the present embodiment, when the BD unit 2 is played back in a state where the control function based on HDMI-CEC is set to “OFF” (not used or disabled), it is received from the CEC control unit 33 of the control device 30. Since the CEC control unit 23 of the BD unit 2 returns a response only to the control device 30 with a vendor command (direct command) in response to the Play command (playback instruction), the externally connected AV amplifier 50 or the DVD player 4 performs an unintended operation. Can be prevented. A stable operation can be obtained even in a system having only one channel of the HDMI-CEC control line 13. As a result, it is possible to suppress the cost increase and development cost for the two channels of the HDMI-CEC control line 13, and provide a user-friendly system.

In addition, this invention is not limited only to the said embodiment, You may deform | transform a component in the range which does not deviate from the summary in an implementation stage.
In the above embodiment, the example in which the BD unit 2 displays the BD video on the display 37 while listening to music with the DVD player 4 has been described. This is effective when selecting whether to output (source) audio.

  That is, it is assumed that the video / audio processing unit 36 is simultaneously displaying the playback video of the DVD player 4 on the main screen and the playback video of the BD unit 2 on the display 37 simultaneously on the child screen. In this way, when a user operation is performed on the BD unit 2 on which the reproduced video is displayed on the child screen and the BD unit 2 changes to an active state, the CEC control unit 33 changes the BD unit 2 to an active state. The active source command indicating the change is not transmitted to the HDMI-CEC control line 13.

Then, when the user operates the remote controller 60 and the system control unit 31 switches the main screen and the sub screen, the playback video of the BD unit 2 changes to the main screen and the playback video of the DVD player 4 changes to the sub screen. An active source command indicating that the unit 2 has changed to an active state is transmitted to the HDMI-CEC control line 13.
That is, an active source command is transmitted to the HDMI-CEC control line 13 when the BD unit 2 changes to an active state while the playback video of the BD unit 2 is displayed on the main screen.

  Thus, when the video / audio processing unit 36 has a multi-window function for dividing the screen of the display 37 and displaying two or more different sources simultaneously, the video source and other sources of the BD unit 2 are displayed. When the CEC control unit 33 receives a vendor command from the BD unit 2 when the BD unit 2 is displayed on the display 37 at the same time, the CEC control unit 33 confirms that the BD unit 2 is in an active state. By not transmitting the active source command shown, it is possible to prevent the audio output from being switched to the BD unit 2 side without the user's intention.

  Further, when the CEC control unit 33 detects that the BD unit 2 has changed to an active state other than the vendor command, for example, CEC control is performed on the contents of the notification of the deck status command received from the CEC control unit 23 of the BD unit 2. When the unit 33 confirms and the content is not the stop but the content is to operate the BD unit 2 such as recording, playback, fast forward, rewind, etc., it is determined that the BD unit 2 has changed to the active state. Also good.

  When a specific command destined for the BD unit 2 such as a play forward command is transmitted, for example, among the commands transmitted from the CEC control unit 33 to the BD unit 2 instead of the command received from the BD unit 2 2 may be determined to be in an active state.

  In addition, when there is no CEC interlocking setting on the TV unit 3 side, the following operation may be performed. The CEC control unit 23 of the BD unit 2 notifies the CEC control unit 33 by a vendor command that the BD unit 2 is in an active state by an operation such as starting reproduction, and the CEC control unit 33 receives from the BD unit 2. When a vendor command is received, an active source command indicating that the BD unit 2 has changed to an active state is transmitted to the HDMI-CEC control line 13 while controlling the BD unit 2 with a direct command. In this case, even if the command transmitted from the BD unit 2 is a vendor command, the CEC control unit 33 transmits an active source command instead of the BD unit 2, so that a normal HDMI-CEC control function can be realized.

  Further, each component described in the above embodiment may be realized by a program installed in a storage such as a hard disk device of a computer, and the above program is stored in a computer-readable electronic medium: electronic media, The computer may realize the functions of the present invention by causing a computer to read a program from an electronic medium. Examples of the electronic medium include a recording medium such as a CD-ROM, a flash memory, and a removable media. Further, the configuration may be realized by distributing and storing components in different computers connected via a network, and communicating between computers in which the components are functioning.

  DESCRIPTION OF SYMBOLS 1 ... TV housing | casing, 2 ... BD unit (2nd source device, predetermined | prescribed source device), 3 ... TV unit, 4 ... DVD player, 5-7 ... HDMI cable, 8 ... Power supply unit, 60 ... Remote controller (remote control) ) 10 ... reception unit, 19, 29, 39, 59 ... HDMI input terminal, 13 ... HDMI-CEC control line, 21 ... candidate memory, 22 ... holding unit, 23, 33, 43, 53 ... CEC control unit, 30 ... Control device, 32 ... HDMI receiver, 34 ... Memory, 34a ... Interlock setting storage unit, 34b ... Address storage unit, 37 ... Display, 40 ... S / PDIF, 50 ... AV amplifier (first source device), 56 ... Speaker.

Claims (4)

A housing having a terminal to which a first source device that processes video / audio can be connected, a second source device that is disposed in the housing and processes video / audio, the terminal, and the second source A video / audio processing apparatus connected to a device via a digital interface and having a control device for controlling the first source device connected to the terminal and the second source device through a control line of the digital interface. There,
The second source device is
A command transmission unit configured to transmit a first command indicating that the device is in an active state to a control line of the digital interface with a command whose destination is limited to the control device;
The controller is
A setting storage unit in which the setting of either “use” or “not use” of the device control function through the control line of the digital interface is stored;
When the first command from the second source device is received through the control line, the setting of the setting storage unit is confirmed, and when the device control function is set to “use”, the video When a second command indicating that the voice processing device or the second source device is in an active state is transmitted to the control line while the device control function is set to “not used”, A video / audio processing apparatus comprising: a control unit that does not transmit the second command.   The video / audio processing apparatus according to claim 1, wherein the first command is a vendor command permitted by the HDMI-CEC standard.   The video / audio processing apparatus according to claim 1, wherein the first command is a deck status command allowed in the HDMI-CEC standard. A housing having a terminal to which a first source device that processes video / audio can be connected, a second source device that is disposed in the housing and processes video / audio, the terminal, and the second source By a video / audio processing device connected to a device via a digital interface and having a control device for controlling the first source device connected to the terminal and the second source device through a control line of the digital interface A video / audio processing method,
The second source device is
A first command indicating that the second source device is in an active state is transmitted to the control line of the digital interface by a command whose destination is limited to the control device;
The controller is
Store the setting of “use” or “not use” of the device control function through the control line of the digital interface in the setting storage unit,
When the first command from the second source device is received through the control line, the setting of the setting storage unit is confirmed, and when the device control function is set to “use”, the video When a second command indicating that the voice processing device or the second source device is in an active state is transmitted to the control line while the device control function is set to “not used”, A video / audio processing method characterized by not transmitting a second command.

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