JP5458165B2 - 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 that can transmit and receive video / audio signals and control signals over a single cable, such as High-Definition Multimedia Interface input terminals (HDMI input terminals). Etc.) has been commercialized. High-Definition Multimedia Interface and HDMI are registered trademarks.

  The HDMI cable is usually provided with one CEC (Consumer Electronics Control) control line (1ch) for exchanging commands for operating a function uniquely set by a vendor between devices. In this HDMI-CEC control line, when a source device such as a recorder or a player is connected to an HDMI terminal provided in the television receiver, a command is exchanged between the television receiver and the source device for communication. By causing the source device to acquire the address, it is possible to control the function of the source device by specifying the address from the television receiver.

  Some conventional video / audio processing apparatuses are provided with a plurality of the HDMI terminals. In this video / audio processing apparatus, by providing a plurality of HDMI terminals, it is possible to construct a home network by connecting various source devices such as a DVD recorder and a BD recorder. However, if the number of source devices connected to the video / audio processing device increases, the user may not be able to recognize what source device is connected, and the connection status of the source device may not match the user's recognition. There is.

  Therefore, in order to confirm the connection status of the source device to the video / audio processing device, a confirmation command for confirming whether the source device is connected is transmitted, and it is determined whether there is a response to the confirmation command. (For example, refer to Patent Document 1).

JP 2008-252452 A

  In the case of the invention disclosed in Patent Document 1, if there is a response to the confirmation command, it is determined that the source device is connected, and if there is no response to the confirmation command, it is determined that the source device is not connected. However, in this method, the video / audio processing apparatus needs to transmit a command to the source device, which increases the processing load on the video / audio processing apparatus side.

  In recent years, video / audio processing devices with built-in source devices have also been commercialized. However, when multiple source devices are connected to the video / audio processing device, the built-in source devices may not be able to acquire logical addresses. There is sex. In the invention disclosed in Patent Document 1, the case where such a specific source device cannot acquire a logical address is not considered, and when a specific source device cannot acquire a logical address, the user There is a problem that this particular source device cannot be used.

  The present invention has been made to solve such a problem. In a video / audio processing apparatus configured to connect a plurality of source devices to HDMI, video / audio processing is performed using an HDMI-CEC control line. An object of the present invention is to provide a video / audio processing apparatus and a video / audio processing method capable of suppressing the processing load on the apparatus side.

A video / audio processing apparatus according to an embodiment of the present invention is provided in at least one of the inside and the outside of a casing, and is provided in the casing, a source device that processes video / audio, and an external A terminal to which a source device to be connected is detachable, and the terminal and the source device inside the housing are connected via a digital interface to detect the connection of the source device, and a connection detection signal is transmitted through the digital interface. A control device including a connection detection unit that outputs to the source device, and the source device arranged inside the housing stores at least one communication address candidate that can be acquired. One address read out in a predetermined order from the address candidate memory for communication when receiving the connection candidate signal and the connection detection signal from the control device A communication address acquisition unit that performs a communication address acquisition operation using a trusted address candidate by polling and notifies the determined communication address together with a physical address to the control device through the digital interface, and the control device Confirms whether or not the source device arranged inside the casing has been able to acquire the communication address based on the command for completion of acquisition of the communication address, and is arranged inside the casing. If the source device is not able to acquire a communication address, a notification to that effect is given to the outside .

A video / audio processing method according to an embodiment of the present invention includes a source device that processes at least one video / audio and is provided in the casing, and is provided in the casing. A terminal to which a source device to be connected is detachable, and the terminal and the source device inside the housing are connected via a digital interface to detect the connection of the source device, and a connection detection signal is transmitted through the digital interface. A video / audio processing method by a video / audio processing apparatus including a connection detection unit that outputs to the source device, wherein the source device arranged in the housing is acquirable Using one communication address candidate read out in a predetermined order from a communication address candidate memory in which at least one communication address candidate is stored. Perform credit address acquiring operation in the polling, the determined communication address with a physical address, the notified to the control device via a digital interface, wherein the control device, the source device which is disposed inside the housing, wherein Based on the command for completion of acquisition of the communication address, it is confirmed whether the communication address has been acquired.If the source device arranged inside the housing has not acquired the communication address, that fact To be recognized by the outside .

  According to the present invention, in a video / audio processing apparatus having a configuration in which a plurality of source devices are connected to HDMI, a video / audio that can suppress the processing load on the video / audio processing apparatus side using the HDMI-CEC control line. A processing apparatus and a video / audio processing method can be provided.

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 figure which shows the structure of the external source device of one Embodiment of this invention. It is a flowchart which shows operation | movement of TV with a built-in BD player. It is a flowchart which shows operation | movement of TV with a built-in BD player.

  Hereinafter, a Blu-ray disc player built-in television apparatus (hereinafter referred to as “BD player built-in TV”), which is one 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. Blu-ray and Blu-ray Disc are registered trademarks.

  As shown in FIG. 1, the TV with a built-in BD player according to this embodiment includes an output unit such as a video display 40 and a speaker 41, and houses functional components that generate information to be output to the display 40 and the speaker 41. It has a TV casing 1, HDMI terminals 11 to 13 for external input provided in the TV casing 1, and a power supply unit 10.

  A plurality of external source devices (for example, a BD player, a DVD player, an AV amplifier, a recorder, an AV selector, etc.) 4 to 6 are attached to and detached from the HDMI terminals 11 to 13 for external input via general-purpose HDMI cables 7 to 9. Connect freely.

  2A to 2C are diagrams illustrating the internal configuration of each external source device 4 to 6. FIG. As shown in FIG. 2A, the external source device 4 includes a memory 41, a CEC control unit 42 as a communication address acquisition unit, and an HDMI transmitter 43 as a digital video / audio signal transmitter.

  As shown in FIG. 2B, the external source device 5 includes a memory 51, a CEC control unit 52 as a communication address acquisition unit, and an HDMI transmitter 53 as a digital video / audio signal transmitter. . Further, as shown in FIG. 2C, the external source device 6 includes a memory 61, a CEC control unit 62 as a communication address acquisition unit, and an HDMI transmitter 63 as a digital video / audio signal transmitter.

  The memories 41, 51, 61 are realized by, for example, an EEPROM that can be retained even when power is not supplied. In the memories 41, 51, 61, at least one logical address candidate that can be acquired by each of the external source devices 4-6 is stored in advance. The memories 41, 51, 61 hold the determined communication addresses (physical address and logical address pairs).

  When the AC outlet drawn from the TV housing 1 is inserted into a commercial power source such as a household wall outlet, and the primary power source (AC 100 V) is supplied to the power source unit 10, the primary power source (AC 100 V) is provided. Is AC / DC converted to supply operating power (DC + 12V, + 5V, etc.) to the BD unit 2 and the TV unit 3.

  The BD unit 2 is an internal source device (for example, BD player, DVD player, recorder), a memory 21, a CEC control unit 22 as a communication address acquisition unit, and an HDMI transmitter as a digital video / audio signal transmitter. 23.

  The memory 21 is realized by, for example, an EEPROM that can be retained even when power is not supplied. The memory 21 stores in advance at least one logical address candidate that can be acquired by the BD unit 2. The memory 21 holds the determined communication address (a pair of a physical address and a logical address).

  In the TV casing 1, HDMI signal lines 15 to 18 for internal wiring are wired from the HDMI terminals 11 to 13 for external input and the BD unit 2. The HDMI signal lines 15 to 18 are connected to HDMI receivers 31 to 34 as receivers for digital video / audio signals, respectively. Further, the CEC control line 14 is wired from the HDMI terminals 11 to 13 for external input and the BD unit 2 in the TV casing 1. The CEC control line 14 is physically combined into one line and connected to the CEC control unit 35.

  The HDMI signal lines 15 to 18 include, for example, a hot plug detection line (hereinafter referred to as an HPD line), a + 5V power supply line 16, a video / audio data line, and the like. Further, the external source devices 4 to 6 and the built-in source device (BD unit 2) are physically connected to the HDMI-CEC control line 14 (a state where one wiring is branched into four). Yes. By using the HDMI-CEC control line 14 to exchange commands, it is possible to perform operation control, switching control, and the like of source devices connected inside and outside.

  The commands include, for example, a vendor command, deck control command, active source command, etc. for use by individual vendors for individual function control. The vendor command and the deck control command are direct commands and are commands specifying the destination. The deck control command is a command for controlling a device from an individual device. For example, the deck control command is a command for performing an operation corresponding to a button operation such as disc playback or stop from the TV-side remote controller to the BD unit 2. .

  The TV unit 3 includes HDMI receivers 31 to 34, a CEC control unit 35, a memory 36, a system control unit 37, a TV tuner 38, a video / audio processing unit 39, a display 40, a speaker 41, and the like. The HDMI receivers 31 to 34, the CEC control unit 35, the memory 36, and the system control unit 37 constitute a control device.

  The TV tuner 38 receives the television broadcast input from the antenna, and outputs the received video / audio of the program to the video / audio processing unit 39. The TV tuner 38 may be either digital or analog. There may also be multiple implementations.

  The video / audio processing unit 39 receives video / audio digital data or analog signals input from the TV tuner 38 and video / audio input from the BD unit and external source devices 4 to 6 via the HDMI receivers 31 to 34. Play digital data. The video / audio digital data input from the BD unit and the external source devices 4 to 6 are controlled by the system control unit 37, and the data or signals input from the TV tuner 38 and the HDMI receivers 31 to 34, respectively. It switches and outputs to the display 40 and the speaker 41. The system control unit 37 has a built-in timer that measures a predetermined time (for example, one minute). In the case of having a multi-screen display function, the video / audio processing unit 39 performs a reproduction process so that each video source is displayed on a plurality of divided screens.

  The display 40 displays the video reproduced by the video / audio processing unit 39 on the screen. The speaker 41 outputs the sound reproduced by the video / audio processing unit 39.

  As described above, the HDMI receiver 31 functions as a digital video / audio signal receiver, and receives a digital video / audio signal transmitted from the BD unit 2 (built-in source device). Further, the HDMI receiver 31 detects a connection of the BD unit 2 as a hot plug detection unit that changes the HPD signal for the detected BD unit 2 from a de-assert (stopped state) to an asserted (active state). Function. The physical address of the HDMI receiver 31 is set to (1.0.0.0).

  As described above, the HDMI receivers 32 to 34 function as digital video / audio signal receivers and receive digital video / audio signals transmitted from the external source devices 4 to 6, respectively. Also, the HDMI receivers 32 to 34 detect the connection of the external source devices 4 to 6 respectively, and the HPD signals for the external source devices 4 to 6 for which the connection is detected are asserted (active state) from the de-assert (stop state). ) To function as a hot plug detector. The physical addresses of the HDMI receivers 32 to 34 are set to (2.0.0.0), (3.0.0.0), and (4.0.0.0), respectively.

  The memory 36 includes logical addresses “0” to “15” that can be acquired by each source device and physical addresses (1.0.0.0), (2.0.0.0), (3) of each HDMI receiver. 0.0.0.0), (4.0.0.0), a physical address of a predetermined source device (in this embodiment, a physical address of the BD unit 2 and external source devices 4 to 6) is stored in advance. Yes.

  That is, the memory 36 stores information on the HDMI port that is the source of the physical address. The port information includes, for example, (1.0.0.0), (2.0.0.0), (3.0.0.0), physical addresses of ports to which the HDMI cables 15 to 18 are connected. (4.0.0.0) is set. Each source device is assigned with a physical address corresponding to the HDMI port at the time of connection.

  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 35 of the control device 30 according to the connection position (connection port) of the device and assigned to each source device.

  The CEC control unit 35 extracts a communication address included in the address determination notification received from each source device (the BD unit 2 and the external source devices 4 to 6) through the HDMI-CEC control line 14 which is a common control line. And stored in the communication address memory 36. Thereafter, the CEC control unit 35 performs communication control on the source device using the communication address stored in the memory 36.

  In the HDMI-CEC standard, the logical address assigned to the connected device is determined for each device type, and the device type is “Playback Device” in the BD unit 2 as in this example. In this case, the logical address “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 memory 21.

  When the HPD signal changes to an active state, the CEC control unit 22 reads one communication logical address candidate (for example, “4”, etc.) from the memory 21 in a predetermined order, and obtains an address including those addresses. The request polling operation is performed through the HDMI signal line 15. The fixed order is, for example, an order from a small value to a large value or from a large value to a small value.

  When a response (ACK) indicating that the candidate logical address is in use is not received from another source device (for example, DVD player 4), the CEC control unit 22 sets the candidate as a logical address for communication. The communication address including the determined logical address and physical address is included in the address determination notification and transmitted to the CEC control unit 35 through the HDMI-CEC control line 14.

  In addition, when the HPC signal changes to an active state, the CEC control unit 42 included in the external source device 4 reads one logical address candidate for communication from the memory 41 in a predetermined order, and sets these addresses. The polling operation for the included address acquisition request is performed through the HDMI signal line 16.

  When a response (ACK) indicating that the candidate logical address is in use is not received from another source device, the CEC control unit 42 determines the candidate as a logical address for communication, and determines the determined logical address. The communication address including the physical address is included in the address determination notification and transmitted to the CEC control unit 35 through the HDMI-CEC control line 14.

  That is, when the HPD signal changes from de-assert to Asserted, the CEC control units 22 and 42 read out the communication address candidates one by one from the memories 21 and 41, respectively, and use the communication address candidates. The acquisition process is performed by polling, and the determined communication address is notified to the CEC control unit 35 through the HDMI-CEC control line 14. The operation of acquiring the logical address by the external source devices 5 and 6 is the same as that of the external source device 4, and therefore, a duplicate description is omitted.

(First operation example)
Next, a first operation example of the TV with a built-in BD player according to this embodiment will be described with reference to FIG. FIG. 3A shows the operation on the TV unit 3 side, and FIG. 3B shows the operation on the BD unit 2 side.

(Operation on the TV unit 3 side)
First, the operation on the TV unit 3 side will be described with reference to FIG.
When an AC outlet drawn from the TV casing 1 is inserted and AC 100 V (primary power) is supplied to the power supply unit 10, driving power is supplied from the power supply unit 10 to the TV unit 3 (step S101).

  When the HPD signal in the HDMI signal line 15 changes from de-assert to Asserted, that is, when the connection state of the BD unit 2 in the HDMI receiver 31 changes to Asserted, the system control unit 37 activates a built-in timer for a predetermined time ( For example, one minute is counted (step S102).

  The system control unit 37 confirms whether or not the CEC control unit 22 of the BD unit 2 has acquired a logical address for communication when a certain period of time has elapsed (Yes in step S102) (step S103). When the CEC control unit 22 of the BD unit 2 has not acquired a logical address for communication (No in step S103), the system control unit 37 establishes a connection with the BD unit 2 in the video / audio processing unit 39. Instructed to display that it is not. Based on an instruction from the system control unit 37, the video / audio processing unit 39 displays on the display 40 that the connection with the BD unit 2 has not been established (step S104).

(Operation on the BD unit 2 side)
Next, the operation on the BD unit 2 side will be described with reference to FIG.
When an AC outlet drawn from the TV housing 1 is inserted and AC 100 V (primary power) is supplied to the power supply unit 10, power for driving is supplied from the power supply unit 10 to the BD unit 2 (step S201).

  When the power is supplied, the CEC control unit 22 waits for the HPD signal input from the HDMI receiver 31 of the TV unit 3 via the HDMI signal line to be asserted (active state) (step S202).

  When the HPD signal changes from de-assert (inactive state) to Asserted (active state) (Yes in step S202), the CEC control unit 22 starts an operation of acquiring a logical address for communication. Specifically, the CEC control unit 22 reads the physical address (1.0.0.0) of the BD unit 2 (step S203). Next, the CEC control unit 22 reads one candidate logical address from the memory 21 (step S203), and performs a logical address acquisition operation (step S204).

  When the CEC control unit 22 acquires the logical address, it broadcasts the acquired logical address and physical address using a CEC command (step S205).

  Next, a method for confirming whether the CEC control unit 22 of the BD unit 2 has acquired a logical address for communication will be described.

(First confirmation method)
In the first confirmation method, when the CEC control unit 22 of the BD unit 2 acquires the logical address, the command indicating completion of acquisition of the logical address is transmitted to the CEC control unit 35 of the TV unit 3. As the command indicating completion of logical address acquisition, an <Osdname> command or a vendor command may be used.

  When the CEC control unit 35 receives a command indicating completion of logical address acquisition from the CEC control unit 22, it notifies the system control unit 37. Based on the notification from the CEC control unit 35, the system control unit 37 performs the confirmation in step S103 in FIG.

(Second confirmation method)
In this second confirmation method, based on whether the logical address that can be acquired by the BD unit 2 is acquired by a source device other than the BD unit 2 (in this embodiment, the external source devices 4 to 6), Confirm that unit 2 has not obtained a logical address.

  In the second confirmation method, the physical address (1, 0, 0, 0) of the BD unit 2 and the logical addresses “4”, “8”, “11” that can be acquired by the BD unit 2 are stored in the memory 35 in advance. Let me. Each of the external source devices 4 to 6 performs a logical address acquisition operation, and when the logical address is acquired, transmits the acquired logical address and physical address using a CEC command.

  The CEC control unit 35 of the TV unit 3 notifies the system control unit 37 of CEC commands transmitted from the external source devices 4 to 6. The system control unit 37 performs the confirmation in step S103 of FIG. 3A based on the logical address and physical address included in the notified CEC command.

(Third confirmation method)
In the third confirmation method, when the source device obtains the logical address, it is confirmed whether the BD unit 2 has obtained the logical address based on the physical address included in the CEC command transmitted from the source device. To do.

  In the third confirmation method, the physical address (1.0.0.0) of the BD unit 2 is stored in the memory 36 in advance. The CEC control unit 35 of the TV unit 3 notifies the system control unit 37 of CEC commands transmitted from the BD unit 2 and the external source devices 4 to 6. The system control unit 37 performs the confirmation in step S103 in FIG. 3A based on whether the physical address included in the notified CEC command matches the physical address stored in the memory 36.

(Second operation example)
Next, a second operation example of the TV with a built-in BD player according to this embodiment will be described with reference to FIG. 4A shows the operation on the TV unit 3 side, and FIG. 4B shows the operation on the BD unit 2 side. Note that the confirmation operation in step S303 in FIG. 4A is the same as the first to third confirmation methods described above, and thus a duplicate description is omitted.

(Operation on the TV unit 3 side)
First, the operation on the TV unit 3 side will be described with reference to FIG.
When an AC outlet drawn from the TV housing 1 is inserted and AC 100 V (primary power) is supplied to the power supply unit 10, driving power is supplied from the power supply unit 10 to the TV unit 3 (step S301).

  When the HPD signal in the HDMI signal line 15 changes from de-assert to Asserted, that is, when the connection state of the BD unit 2 in the HDMI receiver 31 changes to Asserted, the system control unit 37 activates a built-in timer for a predetermined time ( For example, one minute is counted (step S302).

  The system control unit 37 confirms whether or not the CEC control unit 22 of the BD unit 2 has acquired a logical address for communication when a certain time has passed (Yes in step S302) (step S303). If the CEC control unit 22 of the BD unit 2 has not acquired a logical address for communication (No in step S303), the system control unit 37 once sends an HPD signal to at least one of the HDMI receivers 32-34. It is instructed to change from Asserted (active state) to de-assert (stopped state), and after a certain period of time, de-assert (stopped state) to Asserted (active state).

  The HDMI receivers 32 to 34 change the HPD signal from Asserted (active state) to de-assert (stopped state) once based on an instruction from the system control unit 37, and de-assert (stopped state) after a certain period of time has elapsed. To Asserted (active state) (step S304).

(Operation on the BD unit 2 side)
Next, the operation on the BD unit 2 side will be described with reference to FIG.
When an AC outlet drawn from the TV housing 1 is inserted and AC 100 V (primary power) is supplied to the power supply unit 10, power for driving is supplied from the power supply unit 10 to the BD unit 2 (step S401).

  When the power is supplied, the CEC control unit 22 waits for the HPD signal input from the HDMI receiver 31 of the TV unit 3 via the HDMI signal line to be asserted (active state) (step S402).

  When the HPD signal changes from de-assert (stop state) to Asserted (active state) (Yes in step S402), the CEC control unit 22 starts an operation of acquiring a logical address for communication. Specifically, the CEC control unit 22 reads the physical address (1.0.0.0) of the BD unit 2 (step S403). Next, the CEC control unit 22 reads one candidate logical address from the memory 21 (step S403) and performs a logical address acquisition operation (step S404).

  When the CEC control unit 22 acquires the logical address, it broadcasts the acquired logical address and physical address using a CEC command (step S405).

  As described above, in the first operation of this embodiment, when the BD unit 2 built in the TV housing fails to acquire a logical address, the display 40 notifies the user of that fact. This display allows the user to recognize that the BD unit 2 built in the TV housing has not been able to acquire a logical address, so that the BD unit 2 can be given an opportunity to acquire a logical address. Instead of displaying on the display 40 that the BD unit 2 could not acquire a logical address, the user may be notified by voice from the speaker 41.

  Further, in the second operation of this embodiment, when the BD unit 2 built in the TV housing cannot acquire a logical address, at least one HPD signal of the external source devices 4 to 6 is deasserted from Asserted. Can be given an opportunity for the BD unit 2 to obtain a logical address.

  Further, in this embodiment, it is not necessary to use a dedicated line provided separately from the HDMI-CEC control line for controlling the built-in source device (BD unit 2). It is not necessary to develop a cooperative function component for HDMI-CEC control of the source device (DVD player 4), and the manufacturing cost can be suppressed.

  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. For example, the first operation and the second operation may be combined. In this case, the fact that the BD unit 2 could not acquire the logical address is displayed on the display 40 or output from the speaker 41, and at least one HPD signal of the external source devices 4 to 6 is changed from Asserted to de-assert. By doing so, the BD unit 2 is given an opportunity to acquire a logical address.

In addition, each component 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, and the program is read from the electronic medium. The computer may realize the functions of the present invention by causing the computer to read the functions. Examples of the electronic medium include a recording medium such as a CD-ROM, flash memory, and 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 (built-in source device), 3 ... TV unit, 4-6 ... external source device), 7-9 ... HDMI cable, 10 ... Power supply unit, 11-13 ... HDMI input terminal, 14 ... CEC control line, 15-18 ... HDMI signal line, 21 ... memory, 22 ... CEC control unit, 23 ... HDMI transmitter, 31-34 ... HDMI receiver, 35 ... CEC control unit, 36 ... memory, 37 ... system control unit 38 ... TV tuner, 39 ... Video / audio processing unit, 40 ... Display, 41 ... Speaker.

Claims (8)

At least one of the inside and the outside of the housing that is arranged inside the housing and that processes video / audio, the terminal that is provided in the housing and that can be externally connected to the source device, and the terminal A control device including a connection detection unit that is connected to the source device in the housing via a digital interface, detects connection of the source device, and outputs a connection detection signal to the source device through the digital interface; ,
Comprising
The source device arranged inside the housing receives a communication address candidate memory in which at least one communication address candidate that can be acquired is stored, and the connection detection signal from the control device. The communication address acquisition operation is performed by polling using one communication address candidate read from the communication address candidate memory in a predetermined order, and the determined communication address together with the physical address is sent to the control device through the digital interface. A communication address acquisition unit for notification,
The control device includes:
Based on the command for completion of acquisition of the communication address, the source device arranged inside the case confirms whether or not the communication address has been obtained, and the source device arranged inside the case A video / audio processing apparatus, wherein when a device cannot acquire a communication address, a notification is made so that the outside can recognize the address. The control device includes:
Based on the command for completion of acquisition of the communication address, the source device arranged inside the case confirms whether or not the communication address has been obtained, and the source device arranged inside the case When the device cannot acquire the address for communication, the connection detection signal output to the externally connected source device is turned off, and the connection state of the externally connected source device is changed from the active state to the inactive state. 2. The video / audio processing apparatus according to claim 1, wherein the video / audio processing device is notified so that the outside can be recognized. The housing further includes a display for displaying an image transmitted by the source device,
The control device, when the source device arranged inside the housing does not obtain a communication address, displays the fact on the display so that the outside can recognize it. The video / audio processing apparatus according to claim 1. The housing further includes a speaker that outputs sound transmitted by the source device,
The control device, when the source device arranged inside the casing does not acquire a communication address, outputs the sound from the speaker so that the outside can recognize it. The video / audio processing apparatus according to claim 1. When the source device arranged inside the housing acquires the communication address, it notifies the control device that the communication address has been acquired,
The control device confirms whether or not the source device arranged inside the housing has acquired a communication address based on the notification from the source device arranged inside the housing. 5. The video / audio processing apparatus according to claim 1, wherein The control device includes:
A second memory in which candidates for communication addresses that can be acquired by the source device arranged inside the housing are stored;
Based on the communication address notified from the externally connected source device and the communication address candidate stored in the second memory, the source device arranged inside the casing 5. The video / audio processing apparatus according to claim 1, wherein whether or not the communication address has been acquired is confirmed. At least one of the inside and the outside of the housing that is arranged inside the housing and that processes video / audio, the terminal that is provided in the housing and that can be externally connected to the source device, and the terminal A control device including a connection detection unit that is connected to the source device in the housing via a digital interface, detects connection of the source device, and outputs a connection detection signal to the source device through the digital interface; A video / audio processing method by a video / audio processing apparatus comprising:
The source device arranged inside the housing is
Communication determined by performing a communication address acquisition operation by polling using one communication address candidate read in a predetermined order from a communication address candidate memory in which at least one communication address candidate that can be acquired is stored And the physical address along with the physical address to the control device through the digital interface,
The control device includes:
Based on the command for completion of acquisition of the communication address, the source device arranged inside the case confirms whether or not the communication address has been obtained, and the source device arranged inside the case A video / audio processing method characterized in that, when a device cannot acquire a communication address, a notification to that effect is given to the outside. The control device includes:
Based on the command for completion of acquisition of the communication address, the source device arranged inside the case confirms whether or not the communication address has been obtained, and the source device arranged inside the case When the device cannot acquire the address for communication, the connection detection signal output to the externally connected source device is turned off, and the connection state of the externally connected source device is changed from the active state to the inactive state. 8. The video / audio processing method according to claim 7 , wherein notification is made so that the outside can be recognized.

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