JP5838745B2 - Relay device and program thereof - Google Patents

Description

  The present invention relates to a relay device connectable to a sink device and a source device.

  In recent years, a transmitting device (hereinafter referred to as a source device) such as a DVD player or a Blu-ray (registered trademark; hereinafter referred to as Blu-ray) player, and a receiving device (hereinafter referred to as a sink device) such as a TV, A form of connection using a high-definition multimedia interface (HDMI) cable via a relay device (hereinafter referred to as a repeater) such as an AV amplifier has become widespread. By using the HDMI cable, video and audio signals from the source device can be transmitted and received in digital format with high image quality and high sound quality.

  Further, the HDMI standard defines CEC (Cosmer Electronics Control) which is a protocol for transmitting control signals in both directions. By using CEC, for example, it is possible to operate a repeater or a source device in conjunction with each other simply by transmitting a remote control signal to a sink device (for example, a TV) by a user operation.

  Some repeaters have a plurality of HDMI output terminals. When a plurality of sink devices are connected to a repeater having a plurality of HDMI outputs, video signals from a source device connected to the repeater can be simultaneously transmitted to the plurality of sink devices. For example, when two sink devices are installed in different rooms, the user can view content transmitted from the source device in the sink devices installed in a plurality of rooms.

  According to the HDMI standard, physical addresses are assigned to the sink device, repeater, and source device. The physical address is unique numerical information used to identify the position of each device in the tree structure of the AV system constituted by the source device, repeater, and sink device. Details of the physical address assignment will be described later. When the sink device is a TV, the physical address of the TV is “0.0.0.0”, and the repeater selects the sink device that has transmitted the CEC command from the plurality of sink devices. Cannot be determined. As a result, when the repeater transmits a command to respond to the CEC command received from the sink device, the CEC command is transmitted from the repeater to the other sink device that has not transmitted the CEC command, and the CEC command is transmitted. The other sink device that has not been operated operates unexpectedly. Further, when the CEC command transmitted from the sink device changes the repeater setting, the repeater cannot normally execute the CEC command instructed from the sink device.

For example, when a CEC command for changing the volume and mute status of a repeater is received from one of a plurality of sink devices, the repeater changes the volume and mute status, and then sends the change volume value and mute status to the sink device. Send. Since the repeater cannot identify the sink device that has transmitted the CEC command, the repeater transmits the volume value and the mute state to the sink device that has not transmitted the CEC command. The sink device that has not transmitted the CEC command receives the volume value and the mute state from the repeater, and erroneously displays the volume value and the mute state on the display.

Further, for example, the repeater can set whether to output an audio signal transmitted from the source device from a speaker connected to the repeater or from a speaker of the sink device. For example, a CEC command is set in which both sink devices are set to output audio signals transmitted from the source device from the speakers of the sink device, and audio signals are output from the speakers of the repeater from one sink device. Is sent. Since the repeater cannot identify the sink device that has transmitted the CEC command, there is a possibility that the output of the audio signal to the sink device that has not transmitted the CEC command is erroneously stopped and the sound is output from the speaker of the repeater.

Japanese Patent Application Laid-Open No. 2008-244980 describes that message transmission by a bi-directional connection is easily continued when a communication device holds a physical address and a logical address and continues to use them.

However, according to the above technique, when a plurality of sink devices are connected to the repeater, the repeater cannot operate normally in conjunction with the CEC command transmitted from both sink devices.

JP 2008-244980 A

  The present invention has been made in order to solve the above-described conventional problems. The object of the present invention is to enable a plurality of sink devices to be connected, and to receive an interlock operation when receiving an interlock operation command transmitted from the plurality of sink devices. It is an object of the present invention to provide a relay device that can accurately execute an operation specified by a command.

A relay device according to a preferred embodiment of the present invention is a relay device connectable to a transmission device that transmits video and audio signals and a plurality of reception devices that receive the video and audio signals, and the plurality of reception devices A plurality of output units for outputting the video signal, a physical address acquiring unit for acquiring a physical address of the receiving device, a logical address acquiring unit for acquiring a logical address of the receiving device, and an output unit Management means for managing the physical address of the receiving device and the logical address of the receiving device, and a linked operation command that is a command for operating or setting the relay device or the transmitting device from the receiving device. The interlocking operation command receiving means for receiving, and when the interlocking operation command is received from the receiving device, the interlocking operation command is transmitted. The combination of a specific unit, processing is executed in accordance with the interlocking operation command received from the receiving apparatus, and the logical address specified the physical address that identifies the physical address of the serial receiving apparatus and said logical address And a linking means for responding to the processing executed by the receiving device that has transmitted the linking operation command .

The relay device manages physical addresses and logical addresses of a plurality of receiving devices connected to the relay device. When the relay device receives the linked operation command from the receiving device, the relay device specifies the physical address and logical address of the receiving device that has transmitted the linked operation command. Relay apparatus, based on a combination of the physical address and the logical address, responds the processing executed in the receiving apparatus that has transmitted the communication dynamic operation command. Since the relay device responds the executed process to the receiving device that has transmitted the interlock operation command, the relay operation can be normally executed.

In a preferred embodiment, a relay device physical address acquisition unit that acquires the physical address of the relay device from the receiver connected to the output unit, and the relay device outputs the video signal to the receiver Output setting means for setting whether to give priority to the first output unit or the second output unit; and when the first output unit is set to give priority to the first output unit, The second output unit when the physical address acquired from the receiving device connected to the relay device is set to be used as the physical address of the relay device, and the second output unit is prioritized. Physical address setting means for setting the physical address acquired from the receiving device connected to the relay device to be used as the physical address of the relay device, and the physical address setting means. When the physical address is set, the transmission device physical address setting means for setting the physical address generated based on the set physical address in the transmission device, and the interlock operation command is received from the reception device. And determining means for determining whether or not the interlocking operation command is transmitted from the receiving device connected to the output unit set to be prioritized by the output setting means. Transmitting means for transmitting the interlocking operation command to the transmitting device when it is determined that the interlocking operation command is from the receiving device connected to the set output unit.

  The relay device can set which one of the plurality of output units is to be prioritized to output the video signal. When the priority of the output unit is changed, the relay device validates the physical address of the relay device received from the receiving device connected to the priority-set output unit. The relay apparatus sets a physical address to be generated based on the validated physical address in the transmission apparatus. As a result, when the video signal output setting in the relay device is changed, an appropriate physical address is automatically reset in the relay device and the transmission device. Can be linked normally.

In the relay apparatus according to another preferred embodiment of the present invention, the determination means is the interlock operation command from the reception apparatus connected to the output unit that is not set to be prioritized by the output setting means. When it is determined, whether or not it is the interlock operation command that needs to be transmitted to the transmission device,
When it is determined that the interlock operation command needs to be transmitted to the transmission device, it is determined whether or not transmission of the interlock operation command to the transmission device is permitted, and the interlock operation command is transmitted. When it is determined that the transmission is permitted, the transmission unit transmits the interlock operation command to the transmission device.

  When the relay device receives the interlock operation command from the receiving device connected to the output unit that is not prioritized, the relay device determines whether it is necessary to transmit the interlock operation command to the transmission device. When it is determined that transmission to the transmission device is necessary, it is determined whether or not transmission of the interlock operation command to the transmission device is permitted, and when permitted, the interlock operation command is transmitted to the transmission device. . Since the interlock operation command transmitted from the receiving device connected to the output unit that is not prioritized can be prevented from being transmitted to the transmitting device, it is possible to prevent the interlock operation command not intended by the user from being transmitted to the transmitting device.

In the relay apparatus according to another preferred embodiment of the present invention, the determination means is the interlock operation command from the reception apparatus connected to the output unit that is not set to be prioritized by the output setting means. Command determination means for determining the command type of the received linked operation command when determined, and permitted command management for managing whether or not the relay device is allowed to execute the linked operation command for each command type And a permission determining means for determining whether or not the interlocking operation command is permitted to be executed, and when it is determined that the interlocking operation command is permitted to be executed. The interlocking unit executes the interlocking operation command.

  When a relay device receives a linked operation command from a receiving device connected to an output unit that is not prioritized, it determines the type of the linked operation command and uses a linked operation command that the relay device is allowed to execute. Judge whether there is. Since the relay apparatus executes only the interlocking operation command that is permitted to be executed, it is possible to prevent the setting of the relay apparatus from being changed from the receiving apparatus connected to the output unit that is not prioritized.

The relay device according to another preferred embodiment of the present invention receives an authentication command for receiving the audio signal from the receiving device connected to the output unit that is not set to be prioritized by the output setting means. Based on the authentication command receiving means, the authentication command sending means for sending a command in response to the authentication command to the receiving device, the physical address of the receiving device that sent the authentication command, and the logical address, an output section specifying means for specifying the output portion which is managed by said management means, a sound output portion specifying means for specifying Ruoto voice output unit to correspond to the output unit specified, the voice from the receiving device And a voice output means for outputting the voice signal from the specified voice output unit when receiving the signal.

When the relay device receives an authentication command for receiving an audio signal from the receiving device, the relay device identifies the receiving device from the physical address and logical address of the receiving device that has transmitted the authentication command. Since the relay device can execute authentication processing for receiving the audio signal with the specified receiving device, the audio signal received from the transmitting device is output from the audio output unit, and at the same time, the audio signal transmitted from the receiving device is changed to another audio signal. Can be output from the output unit.

Repeater in accordance with another preferred embodiment of the present invention, determining whether the sound voice output unit specified by the audio output unit identification means is an output of the audio signal transmitted from the transmitting device Output determining means for performing output, output stopping means for canceling output of the audio signal transmitted from the transmitting device when it is determined that output is being performed, and the audio output specified by the audio output unit specifying means And an output unit for outputting the audio signal transmitted from the receiving device.

When the relay device receives the authentication command from the receiving device while outputting the audio signal transmitted from the transmitting device, the relay device stops outputting the audio signal transmitted from the transmitting device, executes the authentication process, Switch to output the audio signal to be transmitted. As a result, the user can output the audio signal transmitted from the receiving device without operating the relay device or the transmitting device.

  A plurality of sink devices can be connected, and when a linked operation command transmitted from a plurality of sink devices is received, it is possible to provide a relay device that can accurately execute the operation specified by the CEC command.

1 is a conceptual diagram of device connection according to a preferred embodiment of the present invention. FIG. 3 is a block diagram according to a preferred embodiment of the present invention. It is a sequence diagram between a sink device and a repeater. The physical address and logical address of the repeater. It is the selector information table which a sink apparatus has. It is the selector information table which a sink apparatus has. It is a table which a repeater has. It is a flowchart which a repeater performs. It is a flowchart which a repeater performs. It is the audio | voice output setting table which a repeater has. It is a CEC permission table which a repeater has. It is a sequence diagram between a sink device and a repeater. It is a sequence diagram between a sink device and a repeater.

  Hereinafter, a source device, a repeater, and a sink device according to preferred embodiments of the present invention will be specifically described with reference to the drawings. However, the present invention is not limited to these embodiments.

FIG. 1 is a configuration diagram of a sink device, a repeater (relay device), and a source device according to a preferred embodiment of the present invention. The repeater 200 is connected to one source device and two sink devices. Source device 100 is connected to repeater 200. The source device 100 is, for example, a DVD player, a Blu-ray player, an HDD player, or the like. The repeater 200 is an AV amplifier, for example. The source device 100 and the repeater 200 are connected by an HDMI cable. The repeater 200 includes a plurality of HDMI input terminals (HDMI IN1, HDMI IN2), and the source device 100 is connected to the HDMI input terminal. The source device 100 includes an HDMI OUT terminal, and the source device 100 outputs HDMI data including a video signal and an audio signal from the HDMI OUT terminal.

  Of the signals input to the repeater 200, the video signal is output as HDMI data from the HDMI OUTMain terminal or the HDMI OUT Sub terminal of the repeater 200 to the sink device 300A or the sink device 300B. The repeater 200 can simultaneously output video signals to the sink device 300A and the sink device 300B. Hereinafter, the sink devices 300A and 300B are simply referred to as the sink device 300 when it is not necessary to distinguish between them. The sink device 300 is a display device, for example, a TV. In the following description, it is assumed that the sink device 300A and the sink device 300B are TVs. The repeater 200 and the sink device 300 are connected by an HDMI cable. The sink device 300 includes one or a plurality of HDMI input terminals (HDMI IN1, HDMI IN2). The user selects either the HDMI IN1 terminal or the HDMI IN2 terminal of the sink device 300, and the sink device 300 receives HDMI data including a video signal from the repeater 200 connected to the selected HDMI input terminal. FIG. 1 shows a state where the sink device 300A receives a video signal from the repeater 200 connected to HDMI IN1, and the sink device 300B receives a video signal from the repeater 200 connected to HDMI IN2.

The user operates the repeater 200 and selects HDMI IN1 or HDMI IN2. The repeater 200 receives an audio signal and a video signal from the source device 100 connected to the selected input terminal. Further, the user operates the repeater 200 to select either or both of HDMI OUT Main and HDMI OUT Sub as the output destination of the video signal. As a result, the video signal from the source device 100 connected to the selected HDMI IN is relayed by the repeater 200 and output to the sink device 300 connected to the HDMI OUT selected by the repeater 200. The audio signal transmitted from the source device 100 is subjected to digital-analog conversion, amplification processing, and the like by the repeater 200 and is output from a speaker connected to the repeater 200.

  FIG. 2 shows a block diagram of a source device 100, a repeater 200, and a sink device 300 according to a preferred embodiment of the present invention. FIG. 2 shows a state where one source device 100 is connected to the repeater 200 and two sink devices 300 are connected to the repeater 200. The source device 100 includes a control unit 11, a memory 12, a playback unit 13, an HDMI transmission unit 14, and a connector unit 15.

The control unit 11 controls the entire source device 100 by executing a program stored in the memory 12, and is, for example, a microcomputer or a CPU. The memory 12 holds the setting contents of the source device 100 and is, for example, a ROM or a RAM. The reproducing unit 13 reproduces a disc or the like inserted into the source device 100, and is, for example, a DVD / Blu-ray reproducing unit or an HDD reproducing unit. The reproduction unit 13 reproduces content such as a DVD / Blu-ray disc, and the video signal and audio signal of the reproduced content are output to the HDMI transmission unit 14.

  The HDMI transmission unit 14 is connected to the connector unit 15, and the video signal and audio signal input from the reproduction unit 13 are HDMI standard signals (hereinafter referred to as HDMI signals) based on the control of the control unit 11. Convert to Further, the HDMI transmission unit 14 transmits an HDMI signal based on the control of the control unit 11.

  The connector unit 15 of the source device 100 is connected to the connector unit 25 of the repeater 200 with an HDMI cable. The HDMI cable is a TMDS line that communicates HDMI signals, a hot plug line that detects hot plugs, a DDC (Display Data Channel) line that communicates data such as EDID, and a CEC line that communicates signals for device cooperation. It consists of. Although there are usually a plurality of TMDS lines, only one line is shown for simplicity.

The repeater 200 includes a control unit 21, a memory 22, an HDMI reception unit 23, an HDMI transmission unit 24, a connector unit 25, an audio processing unit 26A, an amplification unit 27A, an audio processing unit 26B, an amplification unit 27B, and connector units 29 and 30. Have. Hereinafter, when there is no need to distinguish between them, the audio processing units 26A and 26B are simply referred to as the audio processing unit 26, and the amplification units 27A and 27B are simply referred to as the amplification unit 27. A speaker 28A is connected to the amplifying unit 27A. A speaker 28B is connected to the amplifying unit 27B. Since the repeater 200 includes a plurality of sound processing units and amplifying units, sound can be output simultaneously to the speakers 28A and 28B. It is possible to install the speaker 28A in the main room and the speaker 28B in the zone 2 room. In the following description, the speaker 28A and the speaker 28B are simply referred to as the speaker 28 when it is not necessary to distinguish between them. The memory 22 has a table 201 and a CEC permission table 202. The table 201 and the CEC permission table 202 will be described later. The audio processing unit 26 is a DIR, DSP, or the like. The DIR of the audio processing unit 26 converts an audio signal received by the HDMI receiving unit 23 or an ARC (Audio Return Channel) signal transmitted from the sink device 300 described later into a format that can be processed by the DSP. The DSP performs processing such as sound field correction on the audio signal. The audio signal processed by the audio processing unit 26 is output from the speaker 28 via the amplifying unit 27 constituted by a DAC or an amplifier.

The control unit 21 controls the entire repeater 200 by executing a program stored in the memory 22 and is, for example, a microcomputer or a CPU. The memory 22 holds setting contents of the repeater 200, and is a ROM or a RAM, for example.

Based on the control of the control unit 21, the HDMI receiving unit 23 generates original video data from the received HDMI signal and transmits the original video data to the HDMI transmitting unit 24. Further, the HDMI receiving unit 23 generates an original audio signal from the HDMI signal based on the control of the control unit 21 and supplies the original audio signal to the audio processing unit 26. The HDMI transmission unit 24 is connected to the connector unit 29, converts the decoded video signal input from the HDMI reception unit 23 into an HDMI signal based on the control of the control unit 21, and sends it to the sink device 300. Send.

The sink device 300A includes a control unit 41A, a memory 42A, an HDMI receiving unit 43A, and a display unit 44A. The sink device 300B has the same configuration as the sink device 300A. Hereinafter, when it is not necessary to distinguish between the control unit 41A, the control unit 41B, the memory 42A, the memory 42B, the HDMI receiving unit 43A, the HDMI receiving unit 43B, the display unit 44A, and the display unit 44B, the control unit 41, The memory 42, the HDMI receiving unit 43, and the display unit 44 are referred to. The selector information table 402A and the selector information table 402B included in the memory 42 are simply referred to as the selector information table 402, and the connector unit 46A and the connector unit 46B are simply referred to as the connector unit 46. FIG. 2 shows a state where the sink device 300A is installed in the main room and the sink device 300B is installed in the zone 2 room.

The control unit 41 controls the entire sink device 300 by executing a program stored in the memory 42, and is, for example, a microcomputer or a CPU. The memory 42 holds setting contents of the sink device 300 and is, for example, a ROM or a RAM. The memory 42 has a selector information table 402. Details of the selector information table 402 will be described later. The HDMI receiving unit 43 is connected to the connector unit 46 and receives an HDMI signal transmitted from the repeater 200 based on the control of the control unit 41. Further, the HDMI receiving unit 43 generates original video data from the received HDMI signal based on the control of the control unit 41 and outputs the original video data to the display unit 44. The display unit 44 is a display, such as a liquid crystal display or a plasma display.

  In addition to the DDC line, CEC line, TMDS line, and hot plug line, the connector part 46A and the connector part 29, and the connector part 46B and the connector part 30 are HEAC (HDMI Ethernet (registered trademark; hereinafter referred to as Ethernet) and Audio return). Channel) line. The HEAC line can transmit an Ethernet (registered trademark, hereinafter referred to as Ethernet) signal via an HDMI cable. Further, the HEAC line can transmit an audio signal such as an SPDIF (Sony Philips Digital Interface) format from the sink device 300 to the repeater 200. Thereby, the sink device 300 that is a TV can transmit the audio signal of the broadcast data received by the TV tuner or the like to the repeater 200 via the HDMI cable.

The control unit 21 of the repeater 200 having the above configuration manages the physical address and logical address of both the sink device 300A and the sink device 300B in the table 201. When receiving the CEC command from the sink device 300A or the sink device 300B, the control unit 21 of the repeater 200 refers to the table 201 and identifies the sink device 300 that has transmitted the CEC command. A CEC command is returned to the identified sink device 300. As a result, the repeater 200 can execute CEC communication with the plurality of sink devices 300 even when the plurality of sink devices 300 are connected.

  The operation of the present invention will be described below. First, FIG. 3 shows a sequence chart in which the sink device 300 and the repeater 200 set a physical address and a logical address.

A physical address is an identification number that uses a 16-bit numerical value divided into 4 bits by 4 bits. Four decimal numbers from 0 to 15 are arranged like (0.0.0.0). Expressed. By assigning the physical address to each device, the position of each device connected by the HDMI cable in the tree structure is identified. When the sink device 300 is a TV, a physical address (0.0.0.0) is assigned. The repeater 200 connected to the HDMI IN1 of the sink device 300 has a physical address (1.0.0.0), and the repeater 200 connected to the HDMI IN2 has a physical address (2.0.0.0). Is assigned. A logical address is an ID that represents a category of a device. The logical address is mainly used for designating the source and destination of the command, and the physical address is mainly used for designating the input switching destination. For the logical address, a usable numerical value is determined for each category of the device. For example, when the sink device 300 is a TV, 0 or 14 can be used. The logical address that can be used by the repeater 200 is 5, and in the case of a player such as a DVD player, the logical address that can be used is either 4, 8, or 11.

  The control unit 21 of the repeater 200 monitors the HotPlug line connected to the sink device 300, and determines whether or not the HotPlug has been changed to High (S101). HotPlug is changed to High when each device is connected with an HDMI cable or when the device is turned on. If the control unit 21 determines that HotPlug remains Low (NO in S101), the control unit 21 waits for HotPlug to become High. When the power is turned on (S102), the control unit 41 of the sink device 300 determines whether the repeater 200 is connected to HDMI IN1 among the two HDMI input terminals of the sink device 300 (S103). For example, if the sink device 300 is the sink device 300A, it is determined to process HDMI IN1 (YES in S103), and if the sink device 300 is the sink device 300B, it is determined to process HDMI IN2 (NO in S103). In the following description, it is assumed that the sink device 300 is the sink device 300A.

When the control unit 41 of the sink device 300 determines to process the HDMI IN1 (YES in S103), it sets the physical address to be presented to the repeater 200 to (1.0.0.0) (S104). PA in FIG. 3 is an abbreviation for Physical Address and indicates a physical address. Note that when the sink device 300 is the sink device 300B, it is necessary to process HDMI IN2, and therefore the physical address that the control unit 41B of the sink device 300B presents to the repeater 200 is (2.0.0.0). (S105). The control unit 41 of the sink device 300 sets the physical address generated in S104 or S105 to the EDID presented to the repeater 200 (S106). The EDID is an ID including resolution and physical address supported by each device. Each device acquires information such as the output resolution of the counterpart device by transmitting and receiving EDID.

  The control unit 41 of the sink device 300 causes the HDMI transmission unit 14 to change HotPlug to High (S107). The control unit 21 of the repeater 200 detects that HotPlug is High (YES in S101), transmits a request for reading EDID to the sink device 300, and acquires EDID (S108). The control unit 21 of the repeater 200 determines the physical address (1.0.0.0) of the repeater 200 with reference to the physical address described in the EDID (S109). Through the processing up to S109, the repeater 200 determines a physical address corresponding to the sink device 300 connected to the HDMI OUT Main terminal of the repeater 200.

  In order to acquire the logical address No. 5, the control unit 21 of the repeater 200 broadcasts a confirmation command for confirming whether another device is using the logical address No. 5, and waits for a response from each device. (S110). The HDMI standard stipulates that the logical address of the repeater 200 should be set to 5. Note that LA in the sequence chart of FIG. 3 is an abbreviation for Logical Address and indicates a logical address.

  When the control unit 21 of the repeater 200 determines that the logical address No. 5 can be used, it determines the logical address of the repeater 200 itself as 5 (S111). FIG. 4 shows information for storing the logical address and physical address set in the repeater 200 in association with the HDMI OUT. Through the processing up to S111, the control unit 21 stores information related to HDMI OUT Main among the information shown in FIG. That is, it is stored that the physical address corresponding to the HDMI OUT Main terminal of the repeater 200 is 1.0.0.0 and the logical address is 5.

  The control unit 41 of the sink device 300 transmits a command for inquiring about the physical address of the device that broadcasts to acquire the logical address No. 5 in S110 (S112). On the other hand, the control unit 21 of the repeater 200 transmits its own physical address (1.0.0.0) by broadcast (S113).

  The control unit 41 of the sink device 300 stores the logical address and physical address of the repeater 200 in association with the currently set HDMI IN (S114). FIG. 5 shows a selector information table 402A stored in the sink device 300A. The sink device 300A manages the physical address and logical address of the repeater 200 connected to the input selector for each input selector. For example, since the repeater 200 is connected to the HDMI IN1 of the sink device 300A, PA = 1.0.0.0 and LA = 5 are set. Since nothing is connected to the HDMI IN2, a physical address is assigned, but the logical address becomes NON and becomes invalid.

  The control unit 41 of the sink device 300 broadcasts a command for confirming whether or not 0 can be acquired as the logical address of the sink device 300 itself, and waits for a response from each device (S115). When the sink device 300 is a TV, the HDMI standard stipulates that either 0 or 14 is used as a logical address. Since the logical address 0 is specified to be used in preference to the 14th, the sink device 300 requests acquisition of the logical address 0.

  The control unit 41 of the sink device 300 determines whether or not logical address 0 can be acquired by a response by the process of S115 (S116), and when it is determined that logical address = 0 can be acquired (S116). YES), the logical address of the sink device 300 is fixed to 0 (S119). When the control unit 41 of the sink device 300 determines that the logical address No. 0 cannot be acquired (NO in S116), it checks again whether the logical address No. 14 can be acquired (S118). . When the control unit 41 of the sink device 300 determines that the logical address 14 can be acquired (YES in S118), the logical address of the sink device 300 is determined to be 14 (S119). If the control unit 41 of the sink device 300 determines that both the logical addresses 0 and 14 cannot be acquired (NO in S118), it sets the F number to the logical address (S120). The logical address F indicates an error, and is recognized as a device that cannot execute CEC interlocking processing from another device.

  The control unit 41 of the sink device 300 stores its own logical address and physical address in the memory 42 (S121).

  The control unit 21 of the repeater 200 detects the presence of a device that is executing a logical address acquisition request by the process of S115 (S122). The control unit 21 of the repeater 200 transmits a request for acquiring a physical address to the device that has executed the logical address request processing (S123). The control unit 41 of the sink device 300 broadcasts the physical address (0.0.0.0) of the sink device 300 (S124). The control unit 21 of the repeater 200 stores the logical address and physical address of the sink device 300 in the table 201 in association with the HDMI output terminal being set (S125).

  FIG. 7 shows a table 201 managed by the repeater 200. The repeater 200 manages the logical address and physical address of the sink device 300 in association with the HDMI output terminal. In the case of FIG. 1, since the sink device 300A is connected to the HDMI OUT Main, the logical address is 0 and the physical address is (0.0.0.0). Note that the source device linkage flag is not registered by this processing.

  The repeater 200 monitors the fact that HotPlug is set to High from the sink device 300B connected to the HDMI OUT Sub (S101), and executes the same processing as described above. As a result, the sink device 300B generates the selector information table 402B of FIG. That is, the sink device 300B manages the repeater 200 having the physical address (2.0.0.0) and the logical address 5 connected to the HDMI IN2 by the table 402B of FIG. Further, as illustrated in FIG. 7, the repeater 200 stores the logical address 14 and the physical address (0.0.0.0) in the memory 22 in association with the HDMI OUT Sub terminal. Note that the repeater 200 and the source device 100 execute the same processing as in FIG. 3 and set a logical address and a physical address. In that case, in FIG. 3, the sink device can be read as a repeater, and the repeater can be read as a source device.

  Through the above processing, the repeater 200 manages the physical address and the logical address of the sink device 300 in association with the HDMI OUT Main and the HDMI OUT Sub as shown in the table 201 of FIG. Further, the repeater 200 acquires physical addresses corresponding to HDMI OUT Main and HDMI OUT Sub as shown in FIG.

  FIG. 8 shows a flowchart executed by the control unit 21 of the repeater 200 when the repeater 200 is changed to a setting for simultaneously outputting video from both the HDMI OUT Main and HDMI OUT Sub terminals by a user operation. In the present embodiment, the repeater 200 switches between the physical address enabled by the repeater 200 and the physical address presented to the source device 100 in accordance with the output setting change, so that the sink device 300, the repeater 200, and the source device 100 are normal. Can communicate with CEC.

  The repeater 200 can simultaneously output video signals received from the source device 100 to the sink device 300A and the sink device 300B. Hereinafter, the setting of the video signal output at the HDMI OUT terminal of the repeater 200 is referred to as monitor-out setting. The monitor-out setting includes a Both setting, a Both (Main) setting, a Both (Sub) setting, a Main setting, and a Sub setting. When the monitor-out setting is set to the Both setting, the Both (Main) setting, or the Both (Sub) setting, the repeater 200 outputs the video signal received from the source device 100 to both the sink device 300A and the sink device 300B. . When the sink device 300A has the maximum supported resolution 1080p, the sink device 300B has the maximum supported resolution 1080i, and the source device 300 outputs a video signal with the resolution 1080p to the repeater 200, the repeater 200 operates as follows. The maximum supported resolution is the maximum resolution of the video signal that can be displayed by the sink device 300. The repeater 200 identifies resolution information that can be supported by each sink device 300 by receiving the EDID.

When the Repeat setting is set in the repeater 200 and the repeater 200 receives a video signal with a resolution of 1080p from the source device 100, the repeater 200 converts the video signal to a resolution of 1080i and converts the sync device 300A and the sink device 300B. Output to. That is, the repeater 200 changes and outputs the video signal received from the source device 100 to a resolution that can be output by both the sink device 300A and the sink device 300B.

  When the monitor 200 is set to Both (Main) in the repeater 200, and the repeater 200 receives a 1080p video signal from the source device 100, the repeater 200 transmits the video signal to the sink device 300A and the sink device 300B. Is output as 1080p. That is, the repeater 200 outputs the video signal received from the source device 100 as it is if the sink device 300 connected to the HDMI OUT Main can output it. Since the sink device 300 connected to the HDMI OUT Main has priority, the sink device 300B having the maximum supported resolution 1080i cannot display an image.

When the monitor-out setting is set to Both (Sub), the video signal output to the sink device 300B connected to the HDMI OUT Sub terminal is prioritized. In the above example, since the maximum supported resolution of the sink device 300B is 1080i, the repeater 200 changes the video signal having the resolution 1080p received from the source device 100 to the resolution 1080i and outputs it to the sink device 300A and the sink device 300B. As a result, the sink device 300A and the sink device 300B receive the video signal with resolution 1080i from the repeater 200 and display it.

  The control unit 21 of the repeater 200 receives a monitor-out setting change instruction by a user operation (S201). The control unit 21 determines whether the monitor-out setting is any of “Both”, “Both (Main)”, or “Both (Sub)” (S202), and if it is determined to be any (YES in S202), It is determined whether or not the monitor-out setting is “Both” or “Both (Main)” (S203), and when it is determined that it is “Both” or “Both (Main)” (YES in S203), the HDMI OUT Main is referred to with reference to FIG. The physical address 1.0.0.0 assigned to is enabled (S204).

  The control unit 21 presents the physical address 1.1.0.0 to the source device 100 (S205). When the monitor-out setting is changed in the repeater 200, the physical address of the source device 100 is reset to a value presented by the repeater 200.

  The control unit 21 sets the HDMI OUT Main source device linkage flag of the table 201 of FIG. 7 to TRUE (S206), and sets the HDMI OUT Sub source device linkage flag to FALSE (S207). Details of the source device linkage flag will be described later. Through the above processing, when the monitor-out setting is set so as to give priority to HDMI OUT Main, the repeater 200 and the source device 100 validate the physical address starting from 1. As a result, the sink device 300A, the repeater 200, and the source device 100 connected to the HDMI OUT Main can be linked by the CEC command.

  When it is determined that the monitor-out setting is neither “Both”, “Both (Main)”, or “Both (Sub)” (NO in S202), the control unit 21 determines whether the monitor-out setting is the “Main” setting (S208). ). In the case of Main setting, the control unit 21 transmits a video signal only to the sink device 300A connected to the HDMI OUT Main. When the control unit 21 determines that the main setting is set (YES in S208), the control unit 21 executes the processing after S204.

  When the control unit 21 determines that the monitor-out setting is neither “Both” nor “Both (Main)” (NO in S203), the control unit 21 validates and uses (2.0.0.0) of the physical address of the repeater 200. Is determined (S211). The control unit 21 presents the physical address (2.1.0.0) to the source device 100 (S212).

The control unit 21 sets the HDMI OUT Sub source device linkage flag of the table 201 of FIG. 6 to TRUE (S213), and sets the HDMI OUT Main source device linkage flag to FALSE (S214). Through the above processing, when the monitor-out setting is changed to a setting that gives priority to HDMI OUT Sub, the repeater 200 and the source device 100 enable the physical address starting from “2”, and are thus connected to the HDMI OUT Sub terminal. The sink device 300B, the repeater 200, and the source device 100 can be linked by a CEC command.

  When it is determined that the monitor-out setting is not the Main setting (NO in S208), the control unit 21 determines whether the monitor-out setting is the Sub setting (S209), and when it is determined that the monitor-out setting is the Sub setting (S209). YES), the processing after S211 is executed. When the monitor out setting is the Sub setting, the repeater 200 transmits the video signal only to the sink device 300B connected to the HDMI OUT Sub. Further, when the control unit 21 determines that the monitor-out setting is not the Sub setting (NO in S209), all the source device linkage flags in the table 201 are set to FALSE (S210), and the process ends.

Through the above processing, when the monitor-out setting is set to the Both setting or the Both (Main) setting, the CEC interlocking operation is executed among the sink device 300A, the repeater 200, and the source device 100. When the monitor-out setting is changed from a setting that gives priority to HDMI OUT Main (Both or Both (Main)) to a setting that gives priority to HDMI OUT Sub (Both (Sub) setting), the repeater 200 indicates that the repeater 200 itself is valid. Since the physical address to be set is changed and the physical address set to the source device 100 is also changed, the sink device 300B, the repeater 200, and the source device 100 can be switched to a linked state.

[CEC linked processing embodiment]
FIG. 9 shows a flowchart when the repeater 200 receives a CEC command from the sink device 300. According to this embodiment, even if the monitor-out setting of the repeater 200 is set so that HDMI OUT Main is given priority, the repeater 200 is transmitted from the sink device 300B connected to the HDMI OUT Sub side. The CEC command can be executed normally.

  The control unit 21 of the repeater 200 receives a CEC command from the sink device 300 (S301). The repeater 200 recognizes the physical address (0.0.0.0) of the sink device 300 that is the transmission source and the logical address 0 (S302).

  The control unit 21 determines whether or not the combination of the physical address and the logical address acquired by the process of S302 exists in the table 201 of FIG. 7 (S303), and when it is determined that the combination exists in the table 201 (in S303) YES), the corresponding HDMI OUT is specified from the table 201. For example, a combination of a physical address (0.0.0.0) and a logical address 0 is described in the table 201 in FIG. 7, and the specified HDMI OUT is HDMI OUT Main. When it is determined that the combination of the physical address and the logical address does not exist in the table 201 (NO in S303), the control unit 21 ends the process.

  The control unit 21 determines whether or not the source device linkage flag of the specified HDMI OUT is TRUE (S304). For example, in the case of a CEC command transmitted from the sink device 300A having a logical address of 0 and a physical address of (0.0.0.0), the source device linkage flag is determined to be TRUE.

  If the control unit 21 determines that the source device linkage flag is TRUE (YES in S304), the control unit 21 determines whether or not the CEC command received by the repeater 200 in S301 needs to be transmitted to the source device 100 ( S305). The command that needs to be transmitted to the source device 100 is the start or stop of playback of the source device 100.

  When determining that the CEC command needs to be transmitted to the source device 100 (YES in S305), the control unit 21 transmits the CEC command to the source device 100 (S306) and ends the process. Note that when the repeater 200 needs to execute the process specified by the CEC command, the control unit 21 also executes the process of the CEC command.

  When the control unit 21 determines that it is not necessary to transmit a CEC command to the source device 100 (NO in S305), the control unit 21 executes the CEC command (S307) and ends the process. For example, since the CEC command executed only by the repeater 200 is above and below the volume of the AV amplifier, the CEC command is not transmitted to the source device 100. After executing increase / decrease in the volume of the repeater 200, the control unit 21 transmits the changed volume value to the sink device 300 that has transmitted the CEC command via the CEC line. That is, since the control unit 21 can identify the sink device 300 that has transmitted the CEC command by using the table 201 in FIG. 7, the control unit 21 can transmit the changed volume value to the identified sink device 300. As a result, it is possible to prevent the problem that the volume value is erroneously transmitted to the sink device 300 that has not transmitted the CEC command, and an unexpected volume value is displayed on the sink device 300. When the CEC command for changing the mute setting of the repeater 200 is transmitted from the sink device 300, the control unit 21 transmits to the sink device 300 that the mute setting has been executed in the repeater 200 via the CEC line.

  FIG. 10 shows audio output settings managed in the repeater 200. FIG. 10 manages setting values for whether the audio signal output from the source device 100 is output from the speaker provided in the sink device 300 or output from the speaker 28 connected to the repeater 200 with respect to the HDMI OUT terminal. For example, FIG. 10 shows that an audio signal transmitted from the source device 100 is output from the speaker of the sink device 300A connected to the HDMI OUT Main and the speaker of the sink device 300B connected to the HDMI OUT Sub. . In this case, the control unit 21 transmits the audio signal received from the source device 100 to the sink device 300 via the HDMI transmission unit 24. The sink device 300 outputs an audio signal received from the repeater 200 from a speaker provided in the sink device 300.

The control unit 21 receives a CEC command for changing the setting in FIG. 10 to be output from the speaker 28 </ b> A connected to the repeater 200 from the sink device 300 </ b> A through the process of S <b> 301 in FIG. 9. The control unit 21 refers to the table 201 in FIG. 7 and determines that the sink device 300A connected to the HDMI OUT Main has transmitted a CEC command. Then, the control unit 21 controls the audio processing unit 26A and the amplification unit 27A corresponding to HDMI OUT Main, and outputs the audio signal output from the source device 100 from the speaker 28A. Thus, since the control unit 21 can identify the sink device 300A that transmitted the CEC command by the table 201 in FIG. 7, the audio processing unit 26B and the amplification unit 27B are erroneously controlled and the audio to be transmitted to the sink device 300B. It is possible to prevent the signal from being stopped and output from the speaker 28B of the repeater 200. Note that the setting value on the HDMI OUT Main side of the table of FIG. 10 is rewritten from “TV Out” to “repeater”.

  When the control unit 21 determines that the source device linkage flag is FALSE (NO in S304), the control unit 21 determines whether or not the CEC command needs to be transmitted to the source device 100 (S308), and needs to be transmitted. When it is determined that it is a certain CEC command (YES in S308), it is determined whether or not transmission to the source device 100 is permitted (S309). When the CEC command is received from the sink device 300B connected to the HDMI OUT whose source device linkage flag is FALSE, the user requests the source device 100 from the sink device 300B because the synchronization request is from the sink device 300B that is not linked. Sometimes you want to prevent manipulation. The repeater 200 sets a setting value for setting whether or not to permit operation of the source device 100 when receiving a CEC command for operating the source device 100 from the sink device 300 that is not set to be linked. Prepare. The setting information for permission or rejection is stored in the memory 22. This setting can be changed by a user operation.

  When it is determined that the control unit 21 is set to refuse to transmit the CEC command to the source device 100 (NO in S309), the control unit 21 determines that it is set to end and permit the process. If YES (YES in S309), the processing from S306 is executed.

If the control unit 21 determines that the CEC command is not required to be transmitted to the source device 100 (NO in S308), the control unit 21 refers to the table illustrated in FIG. 11 and determines whether to execute the CEC command received from the sink device 300. Is determined (S310). FIG. 11 shows a CEC permission table 202 stored in the memory 22 by the repeater 200. The CEC permission table 202 is a table for determining whether or not the repeater 200 executes a CEC command received from the sink device 300. When the CEC command is executed from the sink device 300B connected to the HDMI OUT terminal that is not set with priority, an operation not intended by the user may be executed by the repeater 200. Therefore, the repeater 200 is permitted by FIG. Only the CEC command is executed.

The CEC permission table 202 manages whether the control unit 21 of the repeater 200 rejects the CEC command for each CEC command transmitted from the sink device 300. For example, when the repeater 200 receives a command for adjusting the volume of the repeater 200 from the sink device 300, if the volume adjustment is permitted, the repeater 200 controls the volume. For example, when it is set to reject the change of the selector and the change of the monitor-out setting of the repeater 200, the control unit 21 rejects the change of the selector and the change of the monitor-out setting. The CEC permission table 202 can be changed by a user operation.

If it is determined that the CEC command is set to reject in the CEC permission table 202 (NO in S310), the process ends. If it is determined that the CEC command is permitted in the CEC permission table 202 (YES in S310), the control unit 21 executes the CEC command (S307).

According to the above embodiment, the control unit 21 of the repeater 200 receives a CEC command from a sink device 300 (sink device 300B) other than the sink device 300 (sink device 300A in the above example) that is set to be linked to CEC. If the CEC command is permitted by the user, the CEC command is executed. The repeater 200 may be set to execute all CEC commands in the CEC permission table 202 of FIG. 11 or may be set to reject all CEC commands.

[CEC interlocking processing embodiment 2]
FIG. 12 shows a sequence chart when the repeater 200 executes an authentication process for receiving an ARC signal from the sink device 300B. When the repeater 200 receives an ARC signal from the sink device 300B, the repeater 200 and the sink device 300B need to execute an authentication process for executing communication of the ARC signal. The authentication process is executed by transmitting / receiving a CEC command. In the CEC permission table 202 of FIG. 11, ARC authentication is set to permission. Accordingly, the repeater 200 can execute the CEC command when receiving the CEC command for ARC authentication transmitted from the sink device 300B. In the following description, the repeater 200 outputs an audio signal received from the source device 100 from the speaker 28A installed in the main room, and outputs an ARC signal transmitted from the sink device 300B connected to the HDMI OUT Sub from the speaker 28B. Suppose that it is set to do.

  The control unit 41B of the sink device 300B detects that the input selector has been changed by a user operation (S401). The control unit 41B determines whether or not the changed selector is an HDMI selector (S402). When it is determined that the changed selector is not an HDMI selector (NO in S402), the control unit 41B ends the process and is determined to be an HDMI selector. If this is the case (YES in S402), the logical address of the repeater 200 assigned to the HDMI selector is specified (S403). Specifically, the control unit 41B refers to the selector information table 402B shown in FIG. 6 and acquires the fifth logical address set in the HDMI IN2.

  The control unit 41B transmits <Request ARC Initiation> to the repeater 200 having the logical address No. 5 via the CEC line (S404). <Request ARC Initiation> is a CEC command for confirming whether or not the repeater 200 can receive the ARC signal.

  The control unit 21 of the repeater 200 receives <Request ARC Initiation> from the sink device 300B (S405), and receives the logical address 14 of the source sink device 300B and the physical address (0.0.0.0. 0) and the HDMI OUT terminal is specified from the table 201. For example, in the table 201 of FIG. 7, the HDMI OUT terminal in the case of a combination of the logical address 14 and the physical address (0.0.0.0) is HDMI OUT Sub.

  The control unit 21 determines whether it is a CEC command from the sink device 300 connected to the HDMI OUT Sub (S407), and determines that it is a CEC command from the sink device 300 connected to the HDMI OUT Sub. In the case (YES in S407), the audio processing unit 26 and the amplification unit 27 to be controlled are specified (S408). In this embodiment, since the audio signal transmitted from the sink device 300B connected to the HDMI OUT Sub side is set to be output from the speaker 28B installed in the zone 2, the audio processing unit is processed by the processing of S408. 26B and the amplifying unit 27B are specified. When the control unit 21 determines that it is not a CEC command from the sink device 300B on the HDMI OUT Sub side (NO in S407), the other audio output unit 26A and the amplification unit 27A are transmitted from the source device 100. Since the audio signal to be processed is being processed and the ARC signal cannot be output, the processing ends. When the repeater 200 is transmitting the signal of the source device 100 to the sink device 300B on the HDMI OUT Sub side, it is a command from the sink device 300 connected to the HDMI OUT Main side in the process of S407. Determine whether.

  The control unit 21 transmits <Initiate ARC> to the sink device 300B (S409). <Initiate ARC> is a command for notifying the sink device 300 that the repeater 200 can receive the ARC signal.

  The control unit 41B of the sink device 300B determines whether or not <Initiate ARC> has been received from the repeater 200 whose logical address is 5 (S410). If it is determined that it has been received (YES in S410), the logical address is <Report ARC Initiated> is transmitted to the repeater 200 of No. 5. <Report ARC Initiated> is a reception response to <Initiate ARC> transmitted from the repeater 200.

  The control unit 41B transmits an audio signal to the repeater 200 via the HEAC line (S412). The audio signal transmitted at this time is TV broadcast reception audio or the like. The control unit 21 of the repeater 200 outputs sound from the speaker 28B using the sound processing unit 26B and the amplification unit 27B specified in S408 (S413).

  According to the embodiment described above, the repeater 200 can perform CEC linkage with the sink device 300A and the source device 100, and at the same time can transmit and receive CEC commands to and from the sink device 300B, and thus can perform ARC authentication processing with the sink device 300B. As a result, the repeater 200 can output the ARC signal received from the sink device 300B from the speaker 28B installed in the zone 2 room simultaneously with outputting the sound of the source device 100 from the speaker 28A. Note that, by changing the audio output setting of the repeater 200, the repeater 200 outputs an ARC signal in the speaker 28A installed in the main room, and the audio transmitted from the source device 100 in the speaker 28B installed in the zone 2 room. It is also possible to output a signal.

[CEC interlocking processing embodiment 2]
According to this embodiment, when the repeater 200 is outputting the audio signal received from the source device 100 from the speaker 28A using the audio processing unit 26A and the amplification unit 27A, the repeater 200 is connected to the HDMI OUT Main. When the ARC authentication command is received from the device 300A, the repeater 200 switches to a state where the video and audio signals received from the source device 100 are not output to the speaker 28A. The repeater 200 outputs an ARC signal received from the sink device 300A. FIG. 13 shows a sequence chart of the repeater 200 and the sink device 300 in this embodiment. The same processes as those in FIG. 12 are denoted by the same reference numerals, and description thereof is omitted.

When the control unit 21 of the repeater 200 determines that the command is not an ARC authentication command from the sink device 300B connected to the HDMI OUT Sub (NO in S407), the audio processing unit 26A and the amplification unit 27A are used. The processing unit is specified (S501).

The control unit 21 determines whether or not the audio processing unit 26A and the amplification unit 27A are outputting the audio signal transmitted from the source device 100 to the speaker 28A (S502), and determines that the audio signal is not being output. (NO in S502), a stop instruction is transmitted to the source device 100 (S504), and when it is determined that output is in progress (YES in S502), output of the audio signal received from the source device 100 is stopped.

As a result, when the repeater 200 receives the ARC authentication command from the sink device 300A, the repeater 200 stops outputting the audio signal transmitted from the source device 100 from the speaker 28A, and performs the ARC authentication process with the sink device 300A. The ARC audio signal received from the sink device 300A can be output from the speaker 28A installed in the main room. That is, when the user outputs the sound of the sink device 300 </ b> A from the repeater 200, it is not necessary to operate the setting change of the repeater 200 or the stop of the source 100.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment. Three or more sink devices 300 may be connected to the repeater 200. Two or more source devices 100 may be connected to the repeater 200.

  The present invention can be suitably employed in devices such as AV receivers, AV amplifiers, and TVs.

100 source device 200 repeater 300A sink device 300B sink device 11 control unit 12 memory 13 playback unit 14 HDMI transmission unit 15 connector unit 21 control unit 22 memory 23 HDMI reception unit 24 HDMI transmission unit 25 connector unit 26A audio processing unit 26B audio processing unit 27A amplifying unit 27B amplifying unit 28A speaker 28B speaker 29 connector unit 30 connector unit 41A control unit 41B control unit 42A memory 42B memory 43A HDMI receiving unit 43B HDMI receiving unit 44A display unit 44B display unit

Claims (7)

A relay device connectable to a transmitting device that transmits video and audio signals and a plurality of receiving devices that receive the video and audio signals,
A plurality of output units for outputting the video signals to the plurality of receiving devices;
Physical address acquisition means for acquiring a physical address of the receiving device;
Logical address acquisition means for acquiring a logical address of the receiving device;
Management means for managing the physical address of the receiving device and the logical address of the receiving device in association with the output unit;
Interlocking operation command receiving means for receiving an interlocking operation command that is a command for operating or setting the relay device or the transmitting device from the receiving device;
A specifying means for specifying the physical address and the logical address of the receiving device that has transmitted the interlocking operation command when the interlocking operation command is received from the receiving device;
A process is executed according to the linked operation command received from the receiving apparatus, and a process executed on the receiving apparatus that has transmitted the linked operation command based on the combination of the identified physical address and the logical address. A relay device comprising interlocking means for responding. Relay device physical address acquisition means for acquiring the physical address of the relay device from the receiving device connected to the output unit;
Output setting means for setting whether to give priority to the first output unit or the second output unit when the relay device outputs the video signal to the receiving device;
When set to give priority to the first output unit, set the physical address acquired from the receiving device connected to the first output unit to be used as the physical address of the relay device, A physical unit configured to use the physical address acquired from the receiving device connected to the second output unit as the physical address of the relay device when the second output unit is set to be prioritized. Address setting means;
When the physical address is set by the physical address setting means, a transmission device physical address setting means for setting the physical address generated based on the set physical address in the transmission device;
Whether or not the interlock operation command is transmitted from the receiver connected to the output unit set to be prioritized by the output setting means when the interlock operation command is received from the receiver. A judging means for judging;
When it is determined that it is the interlock operation command from the receiving device connected to the output unit that is set to be prioritized, further comprising a transmission means for transmitting the interlock operation command to the transmitter device, The relay device according to claim 1. When determining that the determination unit is the interlock operation command from the receiving device connected to the output unit that is not set to be prioritized by the output setting unit,
Determining whether or not the interlock operation command needs to be transmitted to the transmission device;
When it is determined that the interlock operation command needs to be transmitted to the transmission device, it is determined whether or not transmission of the interlock operation command to the transmission device is permitted,
The relay device according to claim 2, wherein when it is determined that transmission of the interlocking operation command is permitted, the transmission unit transmits the interlocking operation command to the transmitting device. When the determination unit determines that the command is the linked operation command from the receiving device connected to the output unit that is not set to be prioritized by the output setting unit, the command type of the received linked operation command Command determination means for determining
Permission command management means for managing whether to permit the relay device to execute the interlock operation command for each command type;
Permission determination means for determining whether or not the interlocking operation command is permitted to be executed,
The relay device according to claim 2 or 3, wherein when it is determined that the interlocking operation command is permitted to be executed, the interlocking unit executes the interlocking operation command. An authentication command receiving means for receiving an authentication command for receiving the audio signal from the receiving device connected to the output unit not set to be prioritized by the output setting means;
Authentication command transmission means for transmitting a command in response to the authentication command to the receiving device;
Output unit specifying means for specifying the output unit managed by the management means based on the physical address of the receiving device that has transmitted the authentication command and the logical address;
An audio output section specifying means for specifying Ruoto voice output unit to correspond to the output unit specified,
The relay apparatus according to claim 2, further comprising: an audio output unit that outputs the audio signal from the specified audio output unit when the audio signal is received from the receiving apparatus. An output status judgment means for the sound voice output unit determines whether it is being output the audio signal transmitted from the transmitting device specified by the voice output section identifying means,
An output stopping means for stopping output of the audio signal transmitted from the transmission device when it is determined that output is in progress;
The relay device according to claim 5, further comprising: an output unit that outputs the audio signal transmitted from the receiving device by the audio output unit specified by the audio output unit specifying unit.   The relay apparatus program which makes the said relay apparatus perform each means of the relay apparatus in any one of Claims 1-6.

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