JPH0314397A - Remote control equipment - Google Patents

Abstract

PURPOSE:To attain the remote control transmission from a room or place separated from a room installing an audio equipment, an AV equipment or the like by transmitting a remote control signal through a speaker cable. CONSTITUTION:A remote control(RC) signal transmitted from an RC transmitter 20 is detected by a photodetecting part 22, supplied from an RC signal input part 16 to the speaker cable 12 and transmitted through the cable 12. The RC signal transmitted through the cable 12 is extracted by an RC signal output part 18 and sent to an equipment for inputting the RC signal to execute commanded operation contents. Since the RC signal is transmitted through the cable 12, RC transmission can be attained from a room or place separated from the room installing an audio equipment or an AV equipment.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a remote control device using light beams for audio equipment, AV (audio-visual) equipment, etc. This allows remote control transmission from another room or remote location■.

[Conventional technology]

Recently, many audio devices, AV devices, etc. are equipped with infrared remote controllers. Conventional infrared. A line remote control is equipped with a light receiving section on the front panel of an audio device, AV device, etc., and the light receiving section directly receives an infrared remote control signal sent from a remote control transmitter, analyzes the code, and reads the commanded operation content. I was trying to execute it.

As an application example of audio equipment or AV equipment, speakers are installed individually in multiple rooms, and an audio source is commonly supplied from the audio equipment or AV equipment placed in one room to the speakers in each room. One possible use is to allow audio and video playback to be enjoyed even in the room.

In this case, with conventional infrared remote controls, the remote control signal is blocked by walls, so the remote control is sent from the listening/viewing room to another room where the audio device or AV device is located to adjust the volume, select the source, etc. I couldn't.

Therefore, when adjusting the volume from a room other than the room in which the audio device or AV device is placed, it is necessary to attach attenuators to the speakers in each room. Furthermore, when performing source selection, etc., control lines had to be wired from the audio equipment or AV equipment to each room to transmit selection signals and the like. Also,
When these methods were not possible, it was necessary to transmit using a remote control instead of infrared rays using radio waves that were not blocked by walls.

[Problem to be solved by the invention]

In the method of adjusting the volume by attaching attenuators to each room, the power loss in the attenuators is large and the damping of the speakers becomes poor, which is not desirable in terms of sound quality. Furthermore, the method of wiring control lines from audio equipment or AV equipment to each room has the drawback that wiring work for the control lines is required. Additionally, remote control transmission using radio waves had many problems such as interference with neighboring houses.

This invention solves the drawbacks in the conventional techniques, and
The present invention aims to provide a remote control device that enables remote control transmission using light beams from a room different from the room in which the audio device, AV device, etc. are placed, or from a remote location.

[Means to solve the problem]

This invention provides an audio device or an AV device that transmits a music signal to a speaker via a speaker cable. and a remote control signal output section that extracts the remote control signal supplied to the speaker cable and sends this remote control signal to a device to which it is input. It is.

[For production]

According to this invention, the remote control signal transmitted from the remote control transmitter is received by the light receiving section, supplied to the speaker cable by the remote control signal input section, and transmitted through the speaker cable. The remote control signal transmitted through the speaker cable is extracted by the remote control signal output section and sent to the device to which the remote control signal is to be input, and the instructed operation content is executed.

According to this, since the remote control signal is transmitted using the speaker cable, the remote control signal can be transmitted from a room different from the room in which the audio device, AV device, etc. are placed, or from a remote location. Therefore, there is no need to provide an attenuator to adjust the volume, or to wire a control line to transmit a control signal. Furthermore, since a remote control using radio waves is not required, problems such as interference with neighboring houses are also eliminated.

〔Example〕

Examples of this invention will be described below.

FIG. 1 shows a remote control transmission system of an audio device to which the present invention is applied. The audio signal is outputted from the power amplifier 10, supplied to the speaker 14 via the speaker cable 12, and generated.

A remote control signal input section 16 and a remote control signal output section 18 are provided in the middle of the speaker cable l2. The remote control signal input section 16 receives an infrared remote control signal transmitted from an infrared remote control transmitter 20 using a light receiving section 22, and supplies it to the speaker cable 12 as it is or after modulating it as necessary. Remote control signal output section 18
extracts the remote control signal supplied to the speaker cable 12 and inputs the remote control signal via the signal line 24 to the remote control signal input terminal of the device to which it is to be input. In addition, if a remote control signal input terminal is not provided,
The infrared light is transmitted from the infrared light emitting section 26 and received by the light receiving section of the device to which the remote control signal is to be input. Devices that receive remote control signals manually analyze the code and execute the commands.

If the device to which the remote control signal is to be input receives the remote control signal transmitted from the infrared remote control transmitter 20, it can directly receive the remote control signal with its light receiving section. In addition, if the speaker 14 is installed in a different room from the equipment, the light receiving section 2
2 is installed in the same room as the speaker 14, it is possible to transmit the remote control from that room to the device via the speaker cable 12.

An example of the configuration of the remote control signal manual section 16 is shown in FIG. The remote control signal input unit 16 includes a band division filter 28 .

The band division state of the signal F (S) on the speaker cable 12 is shown in FIG. 3. According to this, the speaker cable 1
Approximately 20 to 20k}h of the signals transmitted on the speaker 2, i.e., the music signal f(a), are supplied to the speaker 14.

The band signal f (c) below the audible signal is given to the light receiving section 22 and the modulator 30 as a DC power source for operation. In this embodiment, this DC power is supplied from the remote control signal output section 18 via the speaker cable 12. In addition, the remote control signal received by the light receiving unit 22 is modulated by a modulator 30 as necessary to generate a signal f above the audible band.
(b) is supplied to the speaker cable 12.

A specific example of the band division filter 28 shown in FIG. 2 is shown in FIG. A capacitor 32 and a coil 34 are inserted on the speaker cable 12a to extract an audible signal band f(a) and supply it to the speaker 14. The remote control signal is supplied via capacitor 36 to a location between capacitor 32 and coil 34 on speaker cable 12a. A coil 38 and a capacitor 40 are connected between the speaker cables 12a and 12b, and the operating DC power supplied via the speaker cable 12 is taken out from the midpoint of these and supplied to the modulator 30 and the light receiving section 22. .

By the way, the remote control signal manual unit 16 can be built into the speaker 14, as shown in FIG. In the example shown in FIG. 5, the light receiving section 22 is installed on the front baffle board of the speaker cabinet 42 to facilitate light reception. Light receiving section 2
The remote control signal received by 2 is sent to a modulator 30 as necessary.
The signal is input to the remote control signal input section 16 via the remote control signal input section 16 and guided to the terminal 44 via the speaker cable 12 in the speaker cabinet 42 .

In addition, the remote control signal human power section 16, as shown in FIG.
It is also possible to configure it as an adapter that incorporates the band division filter 28, the light receiving section 22, and if necessary the modulator 30, and connects it to the speaker cable 12 using the terminal 46.

Next, FIG. 7 shows an example of the remote control signal output section 18 shown in FIG. 1. The remote control signal output unit 18 includes a band division filter 48, extracts the remote control signal transmitted through the speaker cable 12, analyzes the code with a decoder 50, and outputs it to the remote control signal terminal of the device through the signal line 24. . Further, the LED driver 52 is driven to transmit a remote control signal from the infrared light emitting section 26. This remote control signal is received by the light receiving section of the device. A DC power supply 54 supplies operating power to the LED driver 52. Further, power for operation of the light receiving section 22 and the modulator 30 of the remote control signal input section 16 is also supplied from the DC power supply 54 via the speaker cable 12.

A specific example of the remote control signal output section 18 shown in FIG. 7 is shown in FIG. The audio frequency signal output from the power amplifier 10 is
The signal is transmitted to the speaker cable 12 via the DC blocking capacitor 56 and the coil 58. speaker cable 1
A remote control signal transmitted in the opposite direction from 2 is extracted by a capacitor 60 and input to a decoder 50 manually. Further, a DC power supply for operation is supplied from the DC power supply 54 to the LED driver 52 and the decoder 50 . Further, an operational DC power source is supplied to the remote control signal input section 16 via the speaker cable 12.

[Application example]

FIG. 9 shows an embodiment in which the present invention is applied to an audio device in which speakers are individually installed in a plurality of rooms, and an audio source is commonly supplied to the speakers in each room from the audio equipment placed in one room. . The main room 62 includes audio equipment 64 including an amplifier, selector, source equipment, and the like. The audio signal output from the audio device 64 is transmitted through the speaker cable 66.
, 68 to left and right speakers 70, 72 installed in the main room 62. The signal is also supplied to left and right speakers 80, 82 installed in the supplement room 78 via speaker cables 74, 76. The signal is also supplied to speakers 90 and 92 installed in the supplement room 88 via speaker cables 84 and 86.

On the speaker cable 74, a remote control signal input unit 94 is inserted in the sub room 78, and a remote control signal output unit 96 is inserted in the main room 62. Further, a remote control signal output unit 98 is inserted on the speaker cable 86 as a built-in speaker in a speaker 92 in the sub-room 88 , and a remote control signal output unit 1 is inserted in the main room 62 .
00 is inserted. A remote control signal is supplied from the remote control signal output unit 96 to a remote control signal input terminal 104 of the audio device 64 via a signal line 102 . Also,
A remote control signal outputted from the remote control signal output section 100 is outputted from the infrared light emitting section 106 and inputted to the audio equipment 64 via the remote control light receiving section 108 .

In the above structure, when the infrared remote control 110 is operated in the main room 62, the transmission signal is transmitted to the audio equipment 64.
The light is received by the remote control light receiving unit 108 and the corresponding operation is executed.

When you operate the infrared remote control 112 in the sub room 78,
The transmitted signal is sent to the light receiving unit 114 installed in the supply room 78.
The signal is received by the remote control signal input unit 94 and supplied to the speaker cable 74 via the remote control signal input unit 94, extracted by the remote control signal output unit 96 in the main room 62, and input to the audio equipment 64 via the signal line 102 for corresponding operation. is executed.

When you operate the infrared remote control 116 in the sub room 88,
The transmission signal is received by a light receiving section 118 installed in the sub room, supplied to the speaker cable 86 via the remote control signal input section 98, extracted by the remote control signal output section 100 in the main room 62, and emitted by infrared light. unit 106, the remote control light receiving unit 10 of the audio device 64
8, and the corresponding operation is executed.

〔Effect of the invention〕

As explained above, according to the present invention, since the remote control signal is transmitted using the speaker cable, the remote control signal can be transmitted from a room different from the room in which the audio device, AV device, etc. are placed or from a remote location. be able to. Therefore, there is no need to provide an attenuator to adjust the volume, or to wire a control line to transmit a control signal.

Furthermore, since a remote control using radio waves is not required, problems such as interference with neighboring houses are also eliminated.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. FIG. 2 is a block diagram showing an example of the configuration of the remote control signal manual section in FIG. 1. FIG. 3 is a diagram showing the state of band division of the signal F(S) on the speaker cable 12 in FIG. 2. FIG. 4 is a circuit diagram showing a specific example of the remote control signal manual section of FIG. 2. FIG. 5 is a diagram showing an example of the arrangement of the remote control signal manual section. FIG. 6 is a diagram showing another example of the arrangement of the remote control signal manual section. FIG. 7 is a diagram showing an example of the configuration of the remote control signal output section in FIG. 1. FIG. 8 is a circuit diagram showing a specific example of the remote control signal output section of FIG. 7. FIG. 9 is a block diagram showing an example of application of the present invention. 12, 66, 68, 74, 76, 84.
86...Speaker cable, 14,70,72.
80.82, 90.92...Speaker, 16.94.
98...Remote control signal human power department, 18,96.100.
...Remote control signal output section, 20, 110, 112, 11
6...Remote control transmitter, 22,114,118...
Light receiving section, 64... audio equipment.

Claims (2)

[Claims] (1) In an audio device or an audio-visual device that transmits a music signal to a speaker via a speaker cable, there is a light-receiving section that receives a remote-control signal transmitted in the form of a beam from a remote-control transmitter, and a remote control that is received by this light-receiving section. A remote control signal input section that supplies a signal to the speaker cable, and a remote control signal output section that extracts the remote control signal supplied to the speaker cable and sends the remote control signal to a device to which the remote control signal is to be input. remote control device. (2) The remote control device according to claim 1, wherein the light receiving section is built into the speaker.