JP4292933B2 - Control device for audiovisual equipment - Google Patents

Description

  The present invention relates to a control apparatus for audiovisual equipment that controls output of an audio signal to an external video monitor apparatus having an audio reproduction function such as a television.

  2. Description of the Related Art In recent years, a so-called home theater apparatus is often used that uses a video / audio reproduction / video / audio recording / reproduction device such as a DVD player or a DVD recorder to enjoy 5.1-channel powerful sound together with video. On the other hand, in European countries, skirt terminals are prepared for connection between audiovisual equipment, and the audiovisual equipment and the television are generally connected with a skirt cable. However, the above-mentioned home theater device has an audio amplifier in itself and also has a multi-channel speaker, so that the sound from the television speaker and the sound from the speaker of the home theater device can be heard in duplicate. In order to avoid such a situation, the conventional apparatus for European countries has a specification that the audio signal of the audiovisual apparatus is not output from the TV speaker, that is, the audio signal is not supplied to the TV from the audiovisual apparatus.

  In the control apparatus of the conventional audiovisual apparatus shown in FIG. 4, a television 102a is connected as an external device of the video / audio reproduction unit 101a via an external video output terminal 104, and a decoder or external device A105 is connected to an external audio input terminal A106. An external device B 108 is connected via an input A 107, an external audio input terminal B 109 and an external video input B 110 are connected, and a TV antenna 111 is connected to an internal TV tuner 113 via an RF input terminal 112. No audio output is given to the television 102a, and only video output is given.

  The microcomputer 114a of the video / audio reproduction unit 101a controls the operation of the switches SWA and SWB to select the external device or the output of the DVD / CD reproduction unit 115. The selected video signal is supplied to the television 102a, and the selected audio signal is supplied to the sound playback unit 121a, and is converted into a 5.1 channel signal by the digital signal processor 122, and is converted into a 5.1 channel signal by the switch SWC. The 5.1 channel audio signal is selected and the volume is adjusted by the 5.1 channel volume 124 and then amplified by the amplifiers 132 to 137 of the 5.1 channel amplifier unit 131. It is reproduced by the speakers 142 to 147 of the channel speaker unit 141. A power supply circuit 119a having a power cord 120a supplies power to the microcomputer 114a, the DVD / CD playback unit 115, and the 5.1 channel amplifier unit 131.

In addition, regarding the audio switching of the apparatus including the audiovisual apparatus, there is another one disclosed in Patent Document 1.
Japanese Patent Laid-Open No. 8-1867671

  However, in the conventional device for European countries described with reference to FIG. 4, in order to avoid a malfunction caused by the reproduction operation by both the speaker driven by the sound reproduction unit 121a and the speaker of the television 102a, the television as illustrated. Since no audio signal is supplied to 102a and the audio of the video / audio reproduction unit 101a is not output from the television 102a, the audio reproduction unit 121a, the 5.1 channel amplifier unit 131, or the 5.1 channel speaker is provided. When the unit 141 does not operate for some reason, for example, when power is not supplied, or when a circuit or amplifier fails or a connection cable between the devices is not connected, audio cannot be reproduced on the television 102a. If you want to enjoy quiet sound at a low volume near the TV 102a, such as at night, It was not able to feel free to listen to the voice in the speaker 02a.

The present invention is generally in favor of audio signal output of the video and audio reproduction unit, or selected by selecting an external device audio input by the user, the video on TV with the acoustic reproduction unit for reproducing sound from the speaker to drive reproduced and grasp that the acoustic reproduction unit for some reason is not operating, reproduces the video on TV, automatically also audio from the TV speaker and to play, further operates the sound reproducing unit It is an object of the present invention to provide a control apparatus for audiovisual equipment that can reproduce sound from a television set by a user if necessary.

In order to solve the above-mentioned problems, a first basic configuration of a control apparatus for audiovisual equipment according to the present invention includes a video / audio reproduction unit that reproduces and outputs a video signal and an audio signal, and at least the video / audio reproduction unit. An audio reproduction unit that reproduces an audio signal through a speaker, and the audio / video reproduction unit includes an audio signal output terminal that outputs the audio signal to the audio reproduction unit and an external device connected to an external device that outputs the video A video signal output terminal, an external audio signal output terminal connected to an external device that outputs audio, switching means for switching whether or not to output to at least an external audio signal output terminal connected to the external device, and an input unit based on the instruction, the controls operations and the switching means of the video and audio reproduction unit and the sound reproduction unit, the microcomputer always grasp the operation state based on the control Wherein the acoustic reproduction unit includes an audio signal input terminal for receiving the output of the audio signal output terminal of the video and audio reproduction unit amplifies the voice signal input from the audio signal input terminal, the video and audio reproduction An audio amplifier that outputs to the speaker a multi-channel audio signal that is different from the audio signal output from the unit to the external device, and the microcomputer grasps that the sound reproduction unit that is always grasped is not operating Then , the switching means is controlled regardless of the instruction of the input unit, and the audio signal output of the video / audio reproduction unit is supplied to the external audio signal output terminal.

The second basic configuration of the control apparatus for audiovisual equipment according to the present invention is a video / audio reproduction unit that reproduces and outputs a video signal and an audio signal, and reproduces at least the audio signal of the video / audio reproduction unit by a speaker. An audio reproduction unit, and the audio / video reproduction unit includes an audio signal output terminal for outputting an audio signal to the audio reproduction unit, an external video signal output terminal connected to an external device for outputting video, and audio The audio / video signal output terminal connected to the external device for outputting the output, the switching means for switching the output to the external audio signal output terminal connected to the external device, and the video / audio based on the instruction of the input unit controls the operation and the switching means of the reproducing unit, and a first microcomputer always grasp the operation state of the video and audio reproduction unit based on the control, in the sound reproducing unit An audio signal input terminal for receiving the output signal of the audio signal output terminal of the video and audio reproduction unit amplifies the voice signal input from the audio signal input terminal is outputted to an external device from the video and audio reproduction unit An audio amplifier that outputs a multi-channel audio signal different from the audio signal to the speaker, and a second micro that controls the operation of the sound reproduction unit based on an instruction of the input unit and always grasps an operation state based on the control. and a computer, the first microcomputer communicates with the second microcomputer determines the operating state of the sound reproducing portion to which the second microcomputer is always aware, the acoustic Upon confirming a notification of the state where the reproduction unit is not operating, the switching regardless of the input portion of the instruction to the first microcomputer And controls the stage, is characterized in providing an audio signal output of the video and audio reproduction unit to the external audio signal output terminal

As an extended configuration to the first basic configuration, the switching unit is a first switching unit, and the video / audio reproduction unit further includes an external video input terminal, an external audio input terminal, and the video and a second switching means for selecting an input or output or external video input terminal and an external audio input terminal of the audio reproduction unit, the microcomputer, the absence reproduction output of the video and audio reproduction unit, said first The first and second switching units are controlled so that the video signal of the external video input terminal is supplied to the external video output terminal and the input to the external audio signal input terminal is supplied to the sound reproduction unit. controlling the selection means, and always grasped the sound reproducing portion and controls the first and second switching means to grasp that not operating the external audio signal The input of the input terminal may be output to the external audio signal output terminal.

As an extended configuration to the second basic configuration, the switching unit is a first switching unit, and the video / audio reproduction unit further includes an external video input terminal, an external audio input terminal,
And a second switching means for selecting whether the input signal of the output signal or an external video input terminal and an external audio input terminal of the video and audio reproduction unit, the first microcomputer, the video and audio reproduction unit of the reproduction output When there is no signal, the second switching means is controlled so that the video signal of the external video input terminal is supplied to the external video output terminal and the input signal to the external audio signal input terminal is supplied to the sound reproduction unit. And controlling the first and second switching means and communicating with the second microcomputer, and grasping that the sound reproduction unit that is constantly grasped by the second microcomputer is not operating. then, the configuration that controls the first and second switching means for outputting the input signal of the external audio signal input terminal to said external audio signal output terminal It may be.

In addition to the basic configuration and the extended configuration, the microcomputer is instructed by the input unit in a state in which the microcomputer always knows that the sound reproducing unit is operating. configuration providing the switching means or controlling said first and second switching means, audio input signal of the external sound signal the to the output terminal an audio output signal of the video and audio reproduction apparatus or the external audio input terminal on the basis of the It is good.

And in the structure and their associated construction of the extension, the microcomputer in the standby state of the video and audio reproduction unit, the microcomputer or the first microcomputer the external audio signal input to control said switching means A configuration may be added in which input signals of the terminal and the external video signal input terminal are output to the external audio signal output terminal and the external video signal output terminal, respectively.

Controller audiovisual equipment of the present invention, depending on the configuration of the basic above, usually with priority playback signal of the video and audio reproduction unit, reproduces an audio signal from the speaker of the sound reproduction unit, the video output When the video signal is played back by the external device that performs the operation and the sound playback unit that is constantly grasped by the microcomputer is not operating, the video signal is played back by the external device and the audio signal is sent to the instruction of the input unit. can be played automatically from the speaker of the external device no matter prevents the audio output is muted by non operation of the sound reproducing unit, Ru der what can view audiovisual playback continues .

In the extended configuration, if the video / audio reproduction unit is not operating, the video signal from the external video input terminal is supplied to the external video output terminal and the input signal to the external audio signal input terminal is supplied to the audio signal. When it is given to the reproduction unit and it is understood that the sound reproduction unit which is always grasped by the microcomputer is not operating, the first and second switching means are controlled to input the input signal of the external audio signal input terminal. It can output to the external audio signal output terminal.

In the above-described configuration, the external audio is based on an instruction of the input unit according to the user's preference in a state in which the sound reproducing unit, which is always known by the microcomputer, is understood to be operating. The audio output signal of the video / audio reproduction device or the audio input signal of the external audio signal input terminal can be applied to the signal output terminal.

  In the extended configuration and the configuration associated therewith, in the standby state of the video / audio reproduction unit, the microcomputer or the first microcomputer controls the first and second switching means to control the external The input signals of the audio signal input terminal and the external video signal input terminal can be output to the external audio signal output terminal and the external video signal output terminal, respectively.

(Embodiment 1)
The audiovisual equipment control apparatus according to Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a control apparatus for audiovisual equipment according to Embodiment 1 of the present invention, and FIG.

  In FIG. 1, the control device of the audiovisual apparatus includes an audio / video reproduction unit 101 and an audio reproduction unit 121, and a television 102 is connected via an external audio output terminal 103 and an external video output terminal 104 as an external device of the audio / video reproduction unit 101. The decoder or the external device A105 is connected via the external audio input terminal A106 and the external video input terminal A107, the external device B108 is connected via the external audio input terminal B109 and the external video input terminal B110, and the TV antenna 111 is connected. Are connected via an RF input terminal 112.

  Inside the video / audio reproduction unit 101, a microcomputer (hereinafter referred to as microcomputer) (1) 114 for controlling the operations of the TV tuner 113, the video / audio reproduction unit 101 and the operations of the switches SW1 to SW3 described below, DVD / CD for reproducing DVDs and CDs. There is a CD playback unit 115, and an output changeover switch SW1 which is a changeover means for switching whether or not to output the output audio signal of the decoder or external device A105, external device B108, TV tuner 113, audio signal changeover switch SW3 to the television 102. , Decoder / external device A105, external device B108, TV tuner 113, audio signal selector switch SW2 for switching audio signals from the DVD / CD playback unit 115, and decoder / external device A105, external device B108, TV tuner 11 Comprises a video signal changeover switch SW3 for switching the video signal from the DVD / CD reproducing unit 115. SW2 and SW3 are collectively defined as second switching means.

  Further, the video / audio reproduction unit 101 includes a key input unit (1) 116 for the user to instruct the operation of the video / audio reproduction unit 101, a key input unit (2) 117 for the user to instruct the operation of the audio reproduction unit 121, not shown. A remote control input unit 118 that receives an instruction input from a remote controller (hereinafter referred to as a remote controller) via a wired or infrared light receiving unit, and a power supply circuit that is connected to an AC power source and supplies power to the microcomputer (1) 114 and the DVD / CD playback unit 115 1) 119, and a power supply cord (1) 120 for the power supply circuit (1) 119.

  The sound reproduction unit 121 includes an output of a digital signal processor (hereinafter referred to as DSP) 122 and DSP 122 that arithmetically converts a 2-channel audio signal input from the audio-video reproduction unit 101 into an audio signal of 5.1 channel, or an audio-video reproduction unit. The audio signal selection switch SW4 for selecting the 5.1-channel audio signal input from 101 and the operation of the sound reproduction unit 121 are controlled and always grasped, and the microcomputer (1) 114 has the sound reproduction unit 121 connected to the sound reproduction unit 121. 4. Microcomputer (2) 123 for notifying the operating state, 5.1 channel volume 124 for adjusting the volume of the 5.1 channel audio signal, and 5.1 channel amplifiers 132 to 137 including the subwoofer amplifier 132. 1 channel amplifier 131, connected to AC power supply, microcomputer (2) 123, Comprising a width unit 132-137 to supply power to a power supply circuit (2) 138, the power cord (2) 139,5.1 channel speaker unit 141 of the power supply circuit (2) 138.

  In the microcomputer (2) 123, the power supply voltage is normally supplied to each part, and if there is a separate part, whether the connection cable to that part is correctly connected, etc. Keep track of the behavior.

  The speaker unit 141 includes speakers 142 to 147 for each channel. Of these, for example, the subwoofer 142 can be incorporated in the housing of the sound reproducing unit 121 and the others can be separated.

  The operation of the control apparatus of the audiovisual apparatus of the present embodiment configured as described above will be described below with reference to the flowchart of FIG. The microcomputer (1) 114 controls the switches SW2 and SW3 at least in the standby state in which the power source of step S201 is supplied and the microcomputer (1) 114 is operating. In step S202, the SW1 is turned on.・ Set SW3 to switch to the “A” position. That is, when the video / audio reproduction unit 101 and the audio reproduction unit 121 are not operating, the input from the decoder or the external device A is automatically output to the television 102. This is an example, and for example, if the TV tuner 113 is operating, it may be set in advance to select it. In FIG. 1, the TV tuner 113 is illustrated as being inside, but its output may be handled in the same manner as an external input.

  In step S203, it is determined whether or not the power switch of the key input unit (1) 116 (or the remote control input unit 118) is turned on. If not, the process returns to step S201, and if it is turned on, the process proceeds to step S204. In step S204, communication with the microcomputer (2) 123 is performed to determine whether or not the sound reproducing unit 121 is in an operating state.

  If the sound playback unit 121 is in the operating state, SW1 is turned off in step S205, and SW2 and SW3 are set to the positions of the last memory (the state before the previous power-off) stored in the memory in the microcomputer (1) 114. To do. That is, since the sound reproducing unit 121 is operating and the speaker unit 141 can be reproduced, the audio is not duplicated from the television.

  In step S206, it is determined whether or not there is a user SW1 switching input, and if there is, the state of SW1 is inverted in step S207. That is, here, the switch SW1 is turned on. If there is no SW1 switching input in step S206, SW1 remains off and the process jumps to step S208.

  In step S208, it is determined whether the disc of the DVD / CD playback unit 115 is in a playback state. If it is in a playback state, SW2 and SW3 are switched to the “D” position in step S209. When the DVD / CD playback unit 115 is in the playback state, the video signal and audio signal played back from the disc are automatically output. If the playback state is not set in step S208, the process jumps to step S210.

  In step S210, the device selection state is determined. Prior to this, the user has arbitrarily selected the decoder or the external device A 105, the external device B 108, and the TV tuner 113 using the key input (1) 116 and the remote control input unit 118, and it is determined in step 210 that there is a selection. In step S211, SW2 and SW3 are switched to the selected positions. If no device is selected in step S210, the process jumps to step S212.

  In step S212, it communicates with the microcomputer (2) 123 again to determine the operation state of the sound reproduction unit 121. If the sound reproduction unit 121 remains in the operation state, it is determined in step S213 whether there is a power-off input. The final position of SW3 is stored in the memory, and the process returns to the standby state in step S201. If there is no power-off input in step S213, the process returns to step S206.

  If the sound reproduction unit 121 is not in operation in step S204, the process jumps to step S215. Here, SW1 is turned on, and SW2 and SW3 are set to the positions of the last memory stored in the memory. That is, if the sound reproduction unit 121 is not operating for some reason, an audio signal output can be automatically given to the television 102.

  In step S216, the disc playback state of the DVD / CD playback unit 115 is determined. If the disc playback state, the SW2 and SW3 are set to the “D” position in step S217. If it is not in the reproduction state, the process jumps to step S218.

  In step S218, it is determined whether a device is selected. If there is a selection, SW2 and SW3 are switched to the selected positions in step S219, and if no device is selected in step S218, the process jumps to step S220.

  In step S220, the operation state of the sound reproduction unit 121 is determined again. If there is no operation, the power-off input is determined in step S221. If there is a power-off input, the setting in step S214 is performed to enter the standby state in step S201. Return.

  Returning to step S212, when the sound reproduction unit 121 is not in the operating state in step S212, the switch SW1 is turned on and the process jumps to step S221. That is, since the sound reproduction unit 121 is not operating, it is possible to prevent a silent state by providing an audio signal output to the television 102. If the sound reproduction unit 121 is in the operating state in step S220, the speaker driven by the sound reproduction unit 121 with SW1 turned off and the speaker of the television 102 are prevented from operating simultaneously.

  As described above, according to the present embodiment, the microcomputer (1) 114 controls the video / audio reproduction unit 101 and grasps its internal operation, and the microcomputer (2) 123 controls the audio / voice reproduction unit 121 and its internals. If the sound reproduction unit 121 is operating by grasping the operation and the microcomputer (1) 114 communicates with the microcomputer (2) 123, SW1 is turned off and the sound signal output to the television 102 is turned off and the sound reproduction unit 121 is turned off. Only the speaker to be operated is operated, and if the sound reproduction unit 121 is not operating, SW1 is turned on to provide an audio signal output to the television 102 to prevent silence.

  If the DVD / CD playback unit 115 is in a playback state, the microcomputer (1) 114 gives the output preferentially to the sound playback unit 121, the external audio output terminal 103, and the external video output terminal 104.

  Regardless of the operation described above, an input signal from an external device, a TV tuner, or the like is arbitrarily output to the sound reproduction unit 121 or the TV 102 by the user's selection operation input from the key input unit (1) 116 or the remote control input unit 118. In addition, the audio signal output to the television 102 can be freely turned on / off.

  Furthermore, when the apparatus is not operating, that is, when connected to an AC power source but the power switch is not turned on, an input signal from an external device is automatically output to the television. .

(Embodiment 2)
FIG. 3 shows a block diagram of a control apparatus for audiovisual equipment according to Embodiment 2 of the present invention, where the same reference numerals are given to parts having the same functions as those in FIG. 1 is different from FIG. 1 in that the microcomputer 114b of the video / audio reproduction unit 101b performs the function of the microcomputer (2) 123 of FIG. 1, that is, the operation of the sound reproduction unit 121b in addition to the function of the microcomputer (1) 114 of FIG. It also has a function to control and always grasp its operation. The key input unit 116b and the remote control input unit 118b can instruct not only the operation of the audio / video reproduction unit 101b but also the operation of the sound reproduction unit 121b. The power supply circuit 119b to which the power cord 120b is connected also supplies power to the DVD / CD playback unit 115, the 5.1 channel amplification unit 131, and the microcomputer 114b.

  2 can be applied to the operation as it is. The difference is that, for example, in steps S204 and S212, the part where the microcomputer (1) 114 communicates with the microcomputer (2) 123 communicates. Instead, the determination may be made based on the operation of the sound reproducing unit 121b that the user knows.

  In each of the above embodiments, a DVD / CD playback unit that plays back a DVD or CD as an internal video / audio signal source is exemplified, but it may be a device that can also record on a DVD or CD. It can be reproduced from a tape, a semiconductor memory, or a new recording medium that will appear in the future.

  In each of the above embodiments, the audio / video reproduction unit 101, the audio reproduction unit 121, and the 5.1 channel amplifier unit have been described as being integrated. However, the audio / video reproduction unit 101 and the audio reproduction unit 121 may be separate. In addition, the 5.1 channel amplifier section may be separated, or various structural changes such as incorporating a subwoofer speaker into the 5.1 channel amplifier may be added.

  Furthermore, the number of external devices and the number of switching positions may be determined as necessary, and are not limited to those illustrated.

  As described above, according to the control apparatus for an audiovisual apparatus of the present invention, the audio reproduction signal of the audio / video reproduction section is usually prioritized or the external audio input signal selected by the user is reproduced by the audio / audio apparatus. The audio signal can be reproduced from the television speaker automatically when the sound reproduction unit is not in operation. Furthermore, the industrial applicability is high such that an audio signal can be reproduced from a television speaker by user selection if necessary even when the sound reproducing unit is operating.

Block diagram of a control apparatus for audiovisual equipment according to Embodiment 1 of the present invention The operation flowchart The block diagram of the control apparatus of the audiovisual apparatus in Embodiment 2 of this invention Block diagram showing a conventional control apparatus for audiovisual equipment

Explanation of symbols

101, 101b Video / audio reproduction unit 102 TV 103 External audio output terminal 104 External video output terminal 105 Decoder or external device A
106 External audio input terminal A
107 External video input A
108 External device B
109 External audio input terminal B
110 External video input B
111 TV antenna 112 RF input terminal 113 TV tuner 114 Microcomputer (1)
114b Microcomputer 115 DVD / CD playback section 116 Key input section (1)
116b Key input section 117 Key input section (2)
118 Remote control input unit 119 Power supply circuit (1)
121, 121b Sound reproduction unit 122 Digital signal processor 123 Microcomputer (2)
124 5.1 Channel Volume 131 Amplifier Unit 132 Subwoofer Amplifier 133-137 Amplifier of Each Channel 138 Power Supply Circuit (2)
141 Speaker unit 142 Subwoofer speaker 143 to 147 Speaker of each channel SW1 Output changeover switch SW2 Audio signal changeover switch SW3 Video signal changeover switch SW4 Audio signal selection switch

Claims (7)

A video / audio reproduction unit for reproducing and outputting a video signal and an audio signal;
An audio reproduction unit that reproduces at least the audio signal of the video / audio reproduction unit with a speaker;
In the video / audio reproduction unit,
An audio signal output terminal for outputting an audio signal to the sound reproduction unit;
An external video signal output terminal connected to an external device that outputs video;
An external audio signal output terminal connected to an external device that outputs audio;
Switching means for switching whether or not to output to an external audio signal output terminal connected to at least the external device ;
Based on the instruction of the input unit, the operation of the video and audio reproduction unit and the sound reproduction unit and the switching unit, and a microcomputer that constantly grasps the operation state based on the control ,
In the sound reproduction unit,
An audio signal input terminal for receiving an output of an audio signal output terminal of the video / audio reproduction unit;
Amplifies the audio signal inputted from the audio signal input terminal, and an audio amplifier output to a speaker different multi-channel audio signal from the audio signal to be output to the external device from the video and audio reproduction unit,
When the microcomputer grasps that the sound reproduction unit that is always grasped is not operating, the video / audio reproduction unit is controlled to the external audio signal output terminal by controlling the switching means regardless of an instruction of the input unit. A control apparatus for audiovisual equipment, characterized by providing an audio signal output of A video / audio reproduction unit for reproducing and outputting a video signal and an audio signal;
An audio reproduction unit that reproduces at least the audio signal of the video / audio reproduction unit with a speaker;
・ In the video / audio playback unit,
An audio signal output terminal for outputting an audio signal to the sound reproduction unit;
An external video signal output terminal connected to an external device that outputs video;
An external audio signal output terminal connected to an external device that outputs audio;
Switching means for switching whether or not to output to an external audio signal output terminal connected to at least the external device ;
A first microcomputer for controlling the operation of the video / audio reproduction unit and the switching unit based on an instruction of the input unit, and for constantly grasping the operation state of the video / audio reproduction unit based on the control ;
In the sound reproduction unit,
An audio signal input terminal for receiving an output of an audio signal output terminal of the video / audio reproduction unit;
An audio amplifier that amplifies an audio signal input from the audio signal input terminal and outputs a multi-channel audio signal different from the audio signal output from the video / audio reproduction unit to an external device ;
A second microcomputer for controlling the operation of the sound reproduction unit based on an instruction of the input unit and always grasping an operation state based on the control ;
The first microcomputer, said communication with the second microcomputer, the second microcomputer is always determine the operating status of the sound reproducing portion to know, the not sound reproducing unit operates Upon confirming the notification of absence, the controls said switching means regardless of the input portion of the instruction to the first microcomputer, to give a sound signal output of the video and audio reproduction unit to the external audio signal output terminal A control apparatus for audiovisual equipment. The switching means is a first switching means;
The video / audio reproduction unit includes:
In addition ,
An external video input terminal,
An external audio input terminal,
Second switching means for selecting whether the output of the video / audio reproduction unit is an input of an external video input terminal or an external audio input terminal;
The microcomputer, the absence reproduction output of video and audio reproduction unit, the external audio signal input with by controlling the second switching means provide a video signal of the external video input terminal to the external video output terminal When the first and second switching means are controlled so as to give the input to the terminal to the sound reproduction unit, and it is understood that the sound reproduction unit that is always grasped is not operating , the first and second 2. The control apparatus for audiovisual equipment according to claim 1, wherein the second switching means is controlled to output the input of the external audio signal input terminal to the external audio signal output terminal. The switching means is a first switching means;
The video / audio reproduction unit includes:
In addition ,
An external video input terminal,
An external audio input terminal,
Second switching means for selecting whether the output of the video / audio reproduction unit is an input of an external video input terminal or an external audio input terminal;
The first microcomputer, the absence reproduction output of video and audio reproduction unit, said together by controlling the second switching means provide a video signal of the external video input terminal to the external video output terminal outside Controlling the first and second switching means so as to give an input to the audio signal input terminal to the sound reproduction unit and communicating with the second microcomputer, the second microcomputer always grasps When it is understood that the sound reproducing unit that is operating is not operating , the first and second switching means are controlled to output the input of the external audio signal input terminal to the external audio signal output terminal. The control apparatus for audiovisual equipment according to claim 2, wherein The microcomputer in a state in which the sound reproducing portion to which the microcomputer is always aware knows that it is working to control the switching means based on an instruction input unit, the external audio signal 3. The audiovisual apparatus control device according to claim 1, wherein an audio signal output of the video / audio reproduction device is supplied to an output terminal. The microcomputer controls the first and second switching means on the basis of an instruction from the input unit in a state where it is grasped that the sound reproducing unit which is always grasped by the microcomputer is operating. and, Te controller audiovisual equipment according to claim 3 or 4, characterized in providing an audio input signal of the external sound signal the to the output terminal an audio output signal of the video and audio reproduction apparatus or the external audio input terminal . The microcomputer, the in the standby state of the video and audio reproduction unit, the respective inputs of controlling said first and second switching means and the external audio signal input terminal the external video signal input terminal, the external sound 7. The apparatus for controlling audiovisual equipment according to claim 3, wherein the control apparatus outputs the signal to each of a signal output terminal and the external video signal output terminal.

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