JP5375509B2 - Content transmitting / receiving apparatus and program thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an AV amplifier capable of reducing power consumption during standby when HDMI data from a source device does not have to be through a display device. <P>SOLUTION: When a control part 24 determines that the AV amplifier receives HDMI data from a DVD player and does not have to transmit the HDMI data to the display device during standby, the control part 24 can reduce power consumption by shifting to a first standby state in which power supply voltage is not supplied to an HDMI receiving part and an HDMI transmitting part. On the other hand, when the control part 24 determines that the AV amplifier receives the HDMI data from the DVD player and has to transmit the HDMI data to the display device during standby, the control part 24 shifts to a second standby state in which the power supply voltage is supplied to the HDMI receiving part and the HDMI transmitting part. Thus, even though power consumption increases more than in the first standby state, the HDMI data can be through. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a content transmission / reception device and a program thereof.

  A content transmission / reception system including a DVD (or BD) player, an AV amplifier, and a display device is used. The DVD player reproduces the content data recorded on the DVD disc, converts it into HDMI data, and transmits it to the AV amplifier. The AV amplifier performs sound processing on the sound data included in the content data, and outputs sound from the speaker. The AV amplifier converts the video data into HDMI data and transmits it to the display device. The display device performs video processing on the video data supplied from the AV amplifier and displays it.

  When the display device includes a speaker and the user desires to change from a state in which sound is reproduced from the speaker connected to the AV amplifier to a state in which sound is reproduced from the speaker included in the display device, It is necessary to change the connection so that the DVD player is directly connected to the display device without going through the AV amplifier, and this work is very complicated. In order to solve this problem, the AV amplifier is simply put into a standby state without changing the connection by a user operation (this standby state means that the HDMI receiver and the HDMI transmitter have a power supply voltage in order to pass through the HDMI data. It is proposed that the AV amplifier passes through the HDMI data transmitted from the DVD player to the display device (for example, Patent Document 1). However, when the AV amplifier is set to the standby state, it is not always necessary to pass the HDMI data from the DVD player to the display device. When it is not necessary to pass through, the HDMI receiving unit or the HDMI transmitting unit in the standby state. There is a problem that wasteful power consumption occurs as much as the power supply voltage is supplied.

JP 2007-124469 A

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide a content transmitting / receiving apparatus for transmitting content from a content transmitting apparatus to a content receiving apparatus as it is in a standby state. When it is not necessary to transmit content from the content receiving device, a content transmitting / receiving device capable of reducing power consumption during standby is provided.

  A content transmission / reception device according to a preferred embodiment of the present invention is a content transmission / reception device connectable between a content transmission device and a content reception device, wherein the content transmission device receives a content from the content transmission device; Transmitting means for transmitting content; and determining means for determining whether or not the content transmitting / receiving apparatus needs to receive content from the content transmitting apparatus and transmit to the content receiving apparatus when the content transmitting / receiving apparatus is in a standby state. When the content transmission / reception device shifts to the standby state, it is determined that it is not necessary for the content transmission / reception device to receive the content from the content transmission device and transmit it to the content reception device when the content transmission / reception device is in the standby state. Where The content transmission / reception device receives the content from the content transmission device when the content transmission / reception device is in a standby state, and the content transmission / reception device receives the content from the content transmission device. When it is determined that transmission is necessary, the reception unit and a standby control unit for shifting to a second standby state for supplying a power supply voltage to the transmission unit are provided.

  The standby control unit supplies power supply voltage to the receiving unit and the transmitting unit when it is determined that the content transmitting / receiving device does not need to receive the content from the content transmitting device and transmit it to the content receiving device when the content transmitting / receiving device is in the standby state. No transition is made to the first standby state. Therefore, since the power supply voltage is not supplied to the receiving unit and the transmitting unit, power consumption can be reduced. On the other hand, when it is determined that the content transmission / reception device needs to receive content from the content transmission device and transmit it to the content reception device when the content transmission / reception device is in a standby state, the standby control unit supplies power voltage to the reception unit and transmission unit. Is shifted to the second standby state for supplying. Accordingly, since the power supply voltage is supplied to the reception unit and the transmission unit, the content from the content transmission device can be transmitted to the content reception device regardless of the standby state.

  In a preferred embodiment, the determination means determines whether or not a power supply voltage is supplied from the content transmission device to the content transmission / reception device, and when the power supply voltage is not supplied from the content transmission device, When the content transmitting / receiving apparatus is in a standby state, it is determined that the content transmitting / receiving apparatus does not need to receive content from the content transmitting apparatus and transmit it to the content receiving apparatus.

  When the power supply voltage is not supplied from the content transmission device, the content transmission device is considered to be in a standby state or a complete power-off state, so the content transmission / reception device receives content from the content transmission device and transmits it to the content reception device. It can be determined that there is no need to do.

  In a preferred embodiment, the determination unit determines whether or not data is supplied from the content transmission device to the reception unit, and when the data is not supplied from the content transmission device, the content transmission / reception device Determines that it is not necessary for the content transmitting / receiving device to receive content from the content transmitting device and transmit it to the content receiving device.

  When data (not particularly limited, for example, HDMI data) is not supplied from the content transmission device, the content transmission device is considered to be in a standby state or a complete power-off state. It is possible to determine that it is not necessary to receive and transmit to the content receiving device.

  In a preferred embodiment, the determination means determines whether the content transmission device is active based on a message transmitted from the content transmission device to the content transmission / reception device, and the content transmission device is active. If the content transmission / reception device is in a standby state, it is determined that the content transmission / reception device needs to receive content from the content transmission device and transmit it to the content reception device.

  In a preferred embodiment, the determination means determines whether or not the content transmission device is reproducing content based on a message transmitted from the content transmission device to the content transmission / reception device, and transmits the content. When the content is being played back by the device, the content transmitting / receiving device determines that the content transmitting / receiving device needs to receive the content from the content transmitting device and transmit it to the content receiving device when the content transmitting / receiving device is in a standby state.

  In a preferred embodiment, the determination means determines whether the content transmission device is active based on a message transmitted from the content transmission device to the content transmission / reception device, and the content transmission device determines the content. It is determined whether or not the content transmitting apparatus is in playback, and the content transmitting / receiving apparatus receives content from the content transmitting apparatus when the content transmitting / receiving apparatus is in a standby state when the content transmitting apparatus is not active and is not reproducing content. It is determined that it is not necessary to transmit to the content receiving device.

  In a preferred embodiment, the apparatus further comprises a plurality of input terminals to which the content transmission device can be connected, and a selection means for selecting the input terminal from which the reception means receives content from the plurality of input terminals, For the content transmission apparatus connected to the input terminal selected by the selection means, the content transmission / reception apparatus receives content from the content transmission apparatus when the content transmission / reception apparatus is in a standby state. It is determined whether it is necessary to transmit to the content receiving device.

  In this case, even when a plurality of input terminals are provided, whether to shift to the first standby state or the second standby state depending on the state of the content transmission device connected to the selected input terminal. Judgment can be made appropriately.

  In another aspect of the present invention, there may be provided a content transmission / reception program for causing a computer to execute the determination unit and the standby control unit in any of the content transmission / reception apparatuses described above.

  According to the present invention, in the content transmission / reception device that transmits the content from the content transmission device to the content reception device as it is in the standby state, when there is no need to transmit the content from the content transmission device to the content reception device, It is possible to provide a content transmission / reception device that can reduce power consumption during standby.

1 is a block diagram showing an AV amplifier 20 according to a preferred embodiment of the present invention. FIG. 3 is a block diagram showing connection relationships and physical addresses of an AV amplifier 20, a display device 40, a DVD player 10A, and a BD player 10B. 4 is a flowchart showing processing of the control unit 24 of the AV amplifier 20. 4 is a flowchart showing processing of the control unit 24 of the AV amplifier 20.

  Hereinafter, a DVD (or BD (Blue Lay Disk)) player (also referred to as a source device or a content transmission device), an AV amplifier (also referred to as a content transmission / reception device), and a display device (content reception) according to a preferred embodiment of the present invention. A content transmission / reception system including an apparatus) will be specifically described with reference to the drawings, but the present invention is not limited to these embodiments. In this example, the content is a general term for video (including images, the same applies hereinafter) data and / or audio data.

  FIG. 1 and FIG. 2 are block diagrams showing configurations and connection relationships of the DVD player 10A, the BD player 10B, the AV amplifier 20, and the display device 40. These devices conform to, for example, the HDMI standard and are connected to each other via an HDMI cable. The HDMI cable includes a CEC line that is a communication line, and these devices can mutually transmit and receive commands (hereinafter referred to as CEC messages) via the CEC line, and can control each other. For example, as shown in FIG. 2, the HDMI input 1 (OUT1) of the AV amplifier 20 is connected to the HDMI input 1 (IN1) of the display device 40. The HDMI output 1 of the DVD player 10A is connected to the HDMI input 1 (IN1) of the AV amplifier 20. The HDMI output 2 of the BD player 10B is connected to the HDMI input 2 (IN2) of the AV amplifier 20.

  Each device is assigned a physical address based on the connection relationship of the content transmission / reception system. The physical address indicates a tree structure of each device constituting the content transmission / reception system, and is mainly used for designating an input switching destination. The display device 40, which is the most downstream (sink) device, has physical addresses [0.0.0.0. ] Is given. [1.0.0.0] is assigned to the AV amplifier 20 connected to the upstream side of the display device 40. That is, the physical address is obtained by changing the leftmost number of the physical address [0.0.0.0] of the display device 40 to the HDMI input number to which the device is connected. [1.1.0.0] is given to the DVD player 10A connected to the one upstream side of the AV amplifier 20, and [1.2.0.0] is given to the BD player 10B. That is, the second number from the left of the physical address [1.0.0.0] of the AV amplifier 20 is changed to the HDMI input number to which the DVD player 10A and the BD player 10B are connected [1.1. .0.0] and [1.2.0.0] are the physical addresses of the DVD player 10A and the BD player 10B.

  The DVD player 10A and the BD player 10B read video data and audio data from a DVD (BD) disc, convert them to HDMI data, and transmit them to the AV amplifier 20 via an HDMI cable. The DVD player 10A and the BD player 10B output + 5V power supply voltage to the AV amplifier 20 via the + 5V power supply line of the HDMI cable. Also, the DVD player 10A and the BD player 10B transmit a CEC message indicating whether the DVD player 10A and the BD player 10B themselves are active or playing to the AV amplifier 20 via the CEC line. To do.

  The AV amplifier 20 includes an HDMI receiving unit 21, an HDMI transmitting unit 22, an audio processing unit 23, a control unit 24, a memory (ROM, RAM, etc.) 25, an operation unit 26, a display unit 27, and a power supply unit. 28, HDMI input terminal 29A (corresponding to HDMI input 1 (IN1) in FIG. 2), HDMI input terminal 29B (corresponding to HDMI input 2 (IN2) in FIG. 2), and HDMI output terminal 29C (HDMI in FIG. 2). Output 1 (corresponding to OUT1)).

  The HDMI receiving unit 21 receives HDMI data from the DVD player 10A connected to the HDMI input 1 when the HDMI input 1 is selected in the input selector by a user operation. The HDMI receiving unit 21 receives HDMI data from the BD player 10B connected to the HDMI input 2 when the HDMI input 2 is selected in the input selector by a user operation. When receiving HDMI data from the DVD player 10 </ b> A or the BD player 10 </ b> B, the HDMI receiving unit 21 generates original video data (video data before HDMI conversion) from the received HDMI data and supplies the generated video data to the HDMI transmitting unit 22. . Also, the HDMI receiving unit 21 generates original audio data from the received HDMI data and supplies the original audio data to the audio processing unit 23.

  The HDMI signal line includes a + 5V power supply line, and the HDMI receiving unit 21 is supplied with a + 5V power supply voltage from the DVD player 10A or the BD player 10B via the + 5V power supply line. By determining whether the + 5V power supply voltage is supplied from the DVD player 10A and the BD player 10B, the DVD player 10A and the BD player 10B are in a power-on state or in a standby state (or a complete power-off state). Can be determined.

  The HDMI transmission unit 22 converts the video data supplied from the HDMI reception unit 21 into HDMI data. The HDMI transmission unit 22 transmits the HDMI data to the display device 40 via the HDMI output terminal 29C.

  When the AV amplifier 20 does not reproduce audio, the HDMI receiving unit 21 keeps the received HDMI data as it is (that is, without converting the HDMI data into the original video data and audio data once). To supply. The HDMI transmission unit 22 supplies the HDMI data supplied from the HDMI reception unit 21 to the display device 40 as it is (that is, without converting the original video data and audio data into HDMI data) via the HDMI output terminal 29C. To do. Hereinafter, this state is referred to as the AV amplifier 20 passing through the HDMI data.

  For example, the audio processing unit 23 performs audio processing such as signal processing, delay processing, equalizer processing, volume adjustment processing, amplification processing, DA conversion, and the like on the audio data supplied from the HDMI receiving unit 21. An audio signal is supplied to the connected speaker 60.

  The control unit 24 controls each unit of the AV amplifier 20 based on a program stored in a memory (ROM) 25, and is, for example, a microcomputer or a CPU. The control unit 24 is connected to each control unit of the DVD player 10A, the BD player 10B, and the display device 40 via an HDMI CEC line, and transmits and receives CEC messages to and from each control unit.

  When an instruction to shift from the power-on state to the standby state is input by a user operation, the control unit 24 controls the power source unit 28 to shift the AV amplifier 20 from the power-on state to the standby state. In the standby state, the power supply voltage is supplied from the power supply unit 28 only to the control unit 24 (which may include its peripheral circuits) (and the HDMI reception unit 21 and the HDMI transmission unit 22 as necessary). This is a state of a power-off state in which no power supply voltage is supplied to the portion. In the present embodiment, the standby state includes a first standby state and a second standby state.

  The first standby state is a state in which the power supply voltage is supplied only to the control unit 24 and the power supply voltage is not supplied to other parts including the HDMI reception unit 21 and the HDMI transmission unit 22. That is, in the first standby state, power consumption can be further reduced. However, since the HDMI receiving unit 21 and the HDMI transmitting unit 22 cannot execute operations, the AV amplifier 20 can pass through HDMI data. If the AV amplifier 20 does not need to pass through the HDMI data, this state is entered.

  The second standby state is a state in which the power supply voltage is supplied to the control unit 24, the HDMI reception unit 21, and the HDMI transmission unit 22, and the power supply voltage is not supplied to the other parts. That is, in the second standby state, although the power consumption is larger than that in the first standby state, the HDMI receiving unit 21 and the HDMI transmitting unit 22 can execute the operation, so that the AV amplifier 20 passes through the HDMI data. When the AV amplifier 20 needs to pass through the HDMI data, this state is entered.

  The control unit 24 determines whether or not the AV amplifier 20 needs to receive content from the DVD player 10A or the BD player 10B and transmit it to the display device 40 when the AV amplifier 20 is in the standby state according to the following procedure. To do. When the control unit 24 determines that the AV amplifier 20 does not need to receive the content from the DVD player 10A or the BD player 10B and transmit it to the display device 40, the control unit 24 shifts to the first standby state, and the AV amplifier 20 If it is determined that it is necessary to receive content from the player 10A or the BD player 10B and transmit it to the display device 40, a transition is made to the second standby state.

  Specifically, the control unit 24 determines the power state of the DVD player 10A and the BD player 10B by determining whether or not the + 5V power supply voltage is supplied from the DVD player 10A and the BD player 10B. It is sometimes determined whether or not it is necessary to pass through HDMI data. That is, depending on the type of the source device, there is a device that outputs the + 5V power supply voltage even when the source device is in the standby state. However, at least if the + 5V power supply voltage is not supplied, the source device is in the standby state. Alternatively, it can be determined that the state is a complete power-off state (the complete power-off state is a state of a power-off state in which the power supply voltage is not supplied to the control unit 24). Therefore, when the + 5V power supply voltage is not supplied from the source device, the AV amplifier 20 does not need to pass through the HDMI data. Therefore, when the AV amplifier 20 shifts to the standby state, the control unit 24 performs the first standby. Transition to the state.

  The control unit 24 determines the power status of the DVD player 10A and the BD player 10B by determining whether or not the HDMI data (TMDS data) is supplied from the DVD player 10A and the BD player 10B. It is determined whether it is necessary to pass through the HDMI data. That is, if HDMI data is not supplied, it can be determined that the source device is in a standby state or in a complete power-off state. Accordingly, when the HDMI data is not supplied from the source device, the AV amplifier 20 does not need to pass through the HDMI data, so that the control unit 24 performs the first standby state when the AV amplifier 20 shifts to the standby state. To migrate.

  Based on the contents of the CEC message transmitted from the DVD player 10A and the BD player 10B, the control unit 24 determines whether or not HDMI data needs to be passed through in the standby state. In other words, the source device itself is active (active means a state in which the power is on and HDMI data can be transmitted), or the source device reproduces content. A CEC message indicating whether or not the state is in a state where video data and audio data are read from the disk, converted into HDMI data, and HDMI data is transmitted to the AV amplifier 20 is transmitted. When receiving a CEC message indicating that it is active or playing from a source device connected to the HDMI input selected by the input selector by the user operation, the control unit 24 causes the AV amplifier 20 to Since it is necessary to pass through the HDMI data, the control unit 24 shifts to the second standby state when the AV amplifier 20 shifts to the standby state. On the other hand, when receiving a CEC message indicating that it is not active or not being played back from the source device connected to the HDMI input selected by the input selector by the user operation, the AV amplifier 20 passes through the HDMI data. Since there is no need, the control unit 24 shifts to the first standby state when the AV amplifier 20 shifts to the standby state.

  The display unit 27 displays a setting screen of the AV amplifier 20 and is an LCD, an FL tube, or the like. The operation unit 28 receives user operations and is an operation button, a remote controller, or the like.

  The display device 40 receives the HDMI data from the AV amplifier 20, generates the original video data from the HDMI data, and displays it on the display unit. When the AV amplifier 20 passes the HDMI data to the display device 40, it is necessary to output sound from a speaker built in the display device 40. Accordingly, the display device 40 generates and amplifies the original audio data from the HDMI data, and outputs the audio from the speaker.

  The operation of this embodiment will be described below. 3 and 4 are flowcharts showing the processing of the control unit 24. As shown in FIG. 3, when receiving the CEC message from the source device, the control unit 24 determines the physical address of the source device that has transmitted the CEC message (S1). For example, the physical address of the source device of the transmission source is included in the CEC message. When the physical address is other than [1.1.0.0] or [1.2.0.0], it is a CEC message from a device other than the device connected to the HDMI input of the AV amplifier 20 (for example, Since this is a CEC message from the display device 40, the processing is terminated. When the physical address is [1.1.0.0], it can be seen that the source device that has transmitted the CEC message is connected to the HDMI input 1 of the AV amplifier 20, so the variable n (HDMI input) is stored in the memory 25. Is set to 1 (S2). When the physical address is [1.2.0.0], it can be seen that the source device that has transmitted the CEC message is connected to the HDMI input 2 of the AV amplifier 20, so the variable n is set to 2 in the memory 25. Set (S3).

  The control unit 24 determines the content of the received CEC message at S4, S6, S8, and S10. First, the control unit 24 determines whether or not the content of the CEC message indicates that the source device is active (S4). When indicating that the source device is active (YES in S4), the control unit 24 stores in the memory 25 that the source device connected to the HDMI input n is active (S5). When it is not indicated that it is active (NO in S4), the control unit 24 determines whether or not the content of the CEC message indicates that the source device is not active (S6). When indicating that the source device is not active (YES in S6), the control unit 24 stores in the memory 25 that the source device connected to the HDMI input n is not active (S7).

  When it is not indicated that it is not active (NO in S6), the control unit 24 determines whether or not the content of the CEC message indicates that the source device is reproducing the content (S8). When indicating that playback is in progress (YES in S8), the control unit 24 stores in the memory 25 that the source device connected to the HDMI input n is being played back (S9). When not indicating that playback is in progress (NO in S8), the control unit 24 determines whether the content of the CEC message indicates that the source device is not playing back content (S10). When indicating that playback is not in progress (YES in S10), the control unit 24 stores in the memory 25 that the source device connected to the HDMI input n is not being played back (S11).

  As shown in FIG. 4, the control unit 24 determines whether or not an instruction to shift to the standby state is input by a user operation. When the instruction is input, the control unit 24 determines the current input selector state of the AV amplifier 20. (S21). When the input selector is other than the HDMI input, the control unit 24 shifts the AV amplifier 20 to the first standby state because the AV amplifier 20 does not need to pass through the HDMI data (S29). That is, the control unit 24 blocks supply of the power supply voltage to other parts (including the HDMI receiving unit 21 and the HDMI transmitting unit 22) other than the control unit 24.

  When the input selector is HDMI input 1, that is, when the HDMI receiving unit 21 is set to receive HDMI data from a source device connected to the HDMI input 1, a variable n (HDMI input) is stored in the memory 25. 1) is set to 1 (S22). On the other hand, when the input selector is HDMI input 2, that is, when the HDMI receiving unit 21 is set to receive HDMI data from the source device connected to the HDMI input 2, the variable n is set in the memory 25. 2 is set (S23).

  The control unit 24 determines whether or not a + 5V power supply voltage is supplied from the source device connected to the HDMI input n (S24). Information about whether or not the + 5V power supply voltage is supplied is transmitted from the HDMI receiving unit 21 to the control unit 24. When the + 5V power supply voltage is not supplied (NO in S24), it can be determined that the source device connected to the HDMI input n is in a standby state or a complete power-off state. Accordingly, the control unit 24 does not need to pass through the HDMI data transmitted from the source device to which the AV amplifier 20 is connected to the HDMI input n to the display device 40, and thus causes the AV amplifier 20 to enter the first standby state. (S29).

  When the + 5V power supply voltage is supplied (YES in S24), the control unit 24 determines whether HDMI data is supplied from the source device connected to the HDMI input n (S25). Information on whether or not HDMI data is supplied is transmitted from the HDMI receiving unit 21 to the control unit 24. When HDMI data is not supplied (NO in S25), it can be determined that the source device connected to the HDMI input n is in a standby state or a complete power-off state. Accordingly, the control unit 24 does not need to pass through the HDMI data transmitted from the source device to which the AV amplifier 20 is connected to the HDMI input n to the display device 40, and thus causes the AV amplifier 20 to enter the first standby state. (S29).

  When the HDMI data is supplied (YES in S25), the control unit 24 determines whether the source device connected to the HDMI input n is active based on the storage contents of the memory 25 (S26). ). When active (YES in S26), the source device connected to the HDMI input n is in a power-on state and can determine that HDMI data is to be transmitted. Accordingly, the control unit 24 shifts the AV amplifier 20 to the second standby state (S28). That is, the control unit 24 is supplied with the power supply voltage to the HDMI reception unit 21, the HDMI transmission unit 22, and the control unit 24, and the power supply voltage is supplied to portions other than the HDMI reception unit 21, the HDMI transmission unit 22, and the control unit 24. The power supply unit 28 is controlled so as not to occur. Then, the control unit 24 causes the HDMI receiving unit 21 and the HDMI transmitting unit 22 to pass the HDMI data received from the source device to the display device 40. Therefore, the HDMI data from the source device can be reproduced on the display device 40 even when the AV amplifier 20 is in the standby state.

  When it is determined that the source device is not active based on the storage contents of the memory 25 (NO in S26), the control unit 24 determines whether or not the source device connected to the HDMI input n is being played back. Is determined based on the stored contents (S27). When playback is in progress (YES in S27), the source device connected to the HDMI input n is in a power-on state and can determine that HDMI data is to be transmitted. Accordingly, the control unit 24 shifts the AV amplifier 20 to the second standby state (S28). The control unit 24 causes the HDMI receiving unit 21 and the HDMI transmitting unit 22 to pass the HDMI data received from the source device to the display device 40. Therefore, the HDMI data from the source device can be reproduced on the display device 40 even when the AV amplifier 20 is in the standby state.

  When it is determined that the source device is not playing based on the stored contents of the memory 25 (NO in S27), the control unit 24 determines that the HDMI data is not supplied from the source device connected to the HDMI input n. Accordingly, the control unit 24 does not need to pass through the HDMI data transmitted from the source device to which the AV amplifier 20 is connected to the HDMI input n to the display device 40, and thus causes the AV amplifier 20 to enter the first standby state. (S29).

  As described above, according to the present embodiment, it is determined whether or not HDMI data needs to be passed through for the source device connected to the HDMI input selected by the input selector, and based on the determination result. Since the transition to the first standby state or the second standby state is made, the transition to the second standby state is made only when it is necessary to pass through the HDMI data while reducing the power consumption as much as possible, and the HDMI data is passed through. be able to.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment. Instead of HDMI, other communication standards such as DVI, IEEE 1394, LAN, and USB may be applied. In addition, the content transmission device may be an HDD recorder including an HDD or the like that records content files, a TV tuner, a game machine, or the like. Further, the program may be provided in the form of a program for causing a computer to execute the above operation of the AV amplifier and a recording medium on which the program is recorded. Further, a program for only a part of the above-described operation of the AV amplifier may be provided in the form of firmware update to the AV amplifier and the display device. Furthermore, it may be provided in the form of an electronic component such as an HDMI transmission unit, an HDMI reception unit, or a control unit in which a program for only a part of the operation of the AV amplifier is stored.

  The present invention can be suitably employed in an AV amplifier or the like.

10A DVD player 10B BD player 20 AV amplifier 21 HDMI receiving unit 22 HDMI transmitting unit 23 Audio processing unit 24 Control unit 25 Memory 26 Operation unit 27 Display unit 28 Power supply unit 29A HDMI input 1
29B HDMI input 2
29C HDMI output 1
40 Display device

Claims (4)

A content transmitting / receiving device to which a content transmitting device and a content receiving device can be connected,
Receiving means for receiving content from the content transmitting device;
Transmitting means for transmitting content to the content receiving device;
Determining means for determining whether the content transmission / reception device needs to receive content from the content transmission device and transmit to the content reception device when the content transmission / reception device is in a standby state;
When the content transmitter / receiver shifts to a standby state, it is determined that the content transmitter / receiver does not need to receive content from the content transmitter and transmit to the content receiver when the content transmitter / receiver is in a standby state. In this case, a transition is made to a first standby state in which no power supply voltage is supplied to the receiving means and the transmitting means, and the content transmitting / receiving apparatus receives content from the content transmitting apparatus when the content transmitting / receiving apparatus is in a standby state, and the content receiving apparatus Standby control means for shifting to a second standby state for supplying a power supply voltage to the receiving means and the transmitting means when it is determined that transmission is required ,
The determination unit determines whether or not the content transmission device is reproducing content based on a message transmitted from the content transmission device to the content transmission / reception device, and the content transmission device is reproducing content. If it is, the content receiving device determined that the content receiving apparatus to the standby state needs to send the received content to the content receiving apparatus from the content transmitting apparatus, the content receiving device. Based on a message transmitted from the content transmission device to the content transmission / reception device, the determination means determines whether the content transmission device is active, and whether the content transmission device is reproducing content. And when the content transmitting / receiving apparatus is in a standby state and the content transmitting / receiving apparatus is in a standby state, the content transmitting / receiving apparatus receives the content from the content transmitting apparatus and receives the content. The content transmitting / receiving apparatus according to claim 1, wherein the content transmitting / receiving apparatus determines that transmission to the apparatus is not necessary. A plurality of input terminals to which the content transmission device can be connected;
Selecting means for selecting the input terminal from which the receiving means receives content from among the plurality of input terminals;
For the content transmission apparatus connected to the input terminal selected by the selection means, the determination means receives the content from the content transmission apparatus when the content transmission / reception apparatus is in a standby state. and determines whether it is necessary to be transmitted to the content receiving device, content receiving device according to claim 1 or 2. The content transmission / reception program which makes a computer perform the said judgment means and the said standby control means in the content transmission / reception apparatus in any one of Claims 1-3 .

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