JPH11308687A - Infrared-ray synchronizing type remote control transmitter-receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide, with a simple configuration, an infrared ray synchronizing type remote control transmitter-receiver that attains remote control and personal listening. SOLUTION: In a remote commander 2 that drives a light-emitting element with an electric signal for controlling an acoustic device 1 and sends an infrared- ray signal R, the acoustic device 1 is provided with a voice use optical signal transmission means 15 that converts a voice signal into an infrared-ray signal S and sends the signal, and the remote commander 2 is provided with an light- receiving section 24 that receives the infrared ray signal S and converts it into an electric signal and detects the electric signal synchronously with the electric signal for controlling the acoustic device and with an earphone jack 25 to lead the voice signal to an earphone 29.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote controller for transmitting an infrared light signal to remotely control an audio device, and more particularly, to an infrared-synchronized remote controller for transmitting and receiving information with a simple configuration. It is about the machine.

[0002]

2. Description of the Related Art Conventionally, it has been known to operate audio equipment such as a television, a radio, a stereo, and a CD player by remote control operation using infrared rays. As shown in FIG. 3, a remote control 2 is provided to remotely control the television 1.

The remote controller 2 includes a power switch 21, operation switches 22 for performing various operations, a microcomputer (built-in), a light emitting element 23, and the like. After operating the power switch 22 to turn on the power of the television 1, when the operation switch 22 is operated, the microcomputer in the remote controller sends an electric signal representing a command corresponding to the operation to the light emitting element 23, and the light emitting element 23 Is transmitted by changing the electric signal from to the blinking of infrared rays.
The television 1 includes a remote control receiver 11, a microcomputer (built-in),
A Brown 12 tube, a speaker and the like are provided. The remote control receiver 11 receives the transmission signal of the remote controller 2 by the flashing of the infrared ray, converts the signal into an electric signal, and transmits the electric signal to the microcomputer in the television 1. The microcomputer controls each unit of the television 1 according to the electric signal. Thereby, desired channel selection, volume adjustment, and the like can be performed.

[0004] On the other hand, audio equipment such as the television 1 is configured to be connectable to earphones or headphones so that the sound can be heard individually. That is, the audio equipment is provided with an earphone jack 14 or a headphone jack, and a plug of the earphone or the headphone is inserted into this jack, and the earphone or the headphone is attached to the ear so that sound can be heard without leaking sound to the outside. Has become. Hereinafter, the term headphone will be omitted, and will be represented by earphones.

However, since the conventional earphone is connected to the audio equipment by a conductive wire (wire), a viewer wearing the earphone can move only within the reach of the wire, and has a very wide range of action. Limited. The movement of the body is also restricted by the wires. In order to solve this problem, a wireless earphone shown in FIG. 4 or 5 has been proposed.

The wireless earphone shown in FIG. 4 is disclosed in Japanese Patent Laid-Open Publication No. Sho 60-198995, in which sound transmission from a speaker is cut off by inserting an earphone plug 41 into an earphone jack 14 of the television 1. An electric signal (audio signal) obtained through the plug 41 is input to a modulation circuit of the small transmitter 42, and a radio wave modulated by the electric signal is transmitted from the antenna 43. On the other hand, an earphone 45 is connected to a small receiver 44 that tunes to the transmission wave and performs reception demodulation.
Is connected. The viewer H carrying the small receiver 44 can listen to the sound of the television 1 using the earphone 45. As a communication medium used for a small transmitter / receiver, an electromagnetic induction method or an ultrasonic method using an FM radio wave or a relatively low frequency is used.

The cordless transmission / reception apparatus shown in FIG. 5 is described in Japanese Patent Application Laid-Open No. 6-253382, in which a plug 51 with a transmitter 52 is connected to the earphone jack 14 of the television 1.
Insert The viewer uses the earphone 55 with the receiver 54. Also in this configuration, the speaker of the television 1 is muted, and only the viewer can enjoy the sound without disturbing others.

In Japanese Patent Application Laid-Open No. 57-15571, a remote control unit is provided with a connection terminal for audio monitoring, and multiplexed audio supplied to this connection terminal is switched and selected, so that the audio multiplex mode on the main unit side is selected. There has been proposed an apparatus which enables a switching selection independently of the switching. In Japanese Patent Application Laid-Open No. 61-147675, a wireless remote controller is provided with an audio signal receiving unit for receiving a predetermined audio signal radio wave and an earphone terminal through which the audio signal of the audio signal receiving unit is guided. In addition, there has been proposed a device for reducing a restriction on the behavior of a listener when listening with an earphone. Further, JP-A-62-28
Japanese Patent Application Laid-Open No. 7777 proposes a device in which television sound can be heard from the remote control device by providing a speaker in the remote control device. Similarly, Japanese Patent Application Laid-Open No. 63-40481 also discloses a television receiver that does not require a long cord between headphones and the television receiver by providing a television audio signal receiving system in the remote control device. Proposed. Also, in Japanese Patent Application Laid-Open No. 6-253369, a receiver and an earphone or a speaker capable of listening to sound from the receiver are attached to a remote control box of an audio device having an audio oscillation function, so that the earphone can be listened without a cord. Acceptable devices have been proposed.

[0009]

However, the conventional remote control and the wireless earphone have the following problems.

(1) The remote controller shown in FIG. 3 can operate the television, but can listen to the audio of the television wirelessly with earphones attached to the ears and enjoy the audio by itself without disturbing others. It doesn't have the ability to do it. If the remote control shown in FIG. 3 and the wireless earphone shown in FIG. 4 or FIG. 5 are used together, even if remote control and personal listening are enabled, the number of devices increases, the operation becomes complicated, and handling becomes difficult. It is troublesome. In addition, the cost increases as the number of devices increases.

(2) Since radio waves are used as a communication medium, there is a problem of interference. For example, as shown in FIG. 6, a plurality of viewers H1, H
,... Have respective televisions 1-1, 1-2,..., And when each viewer watches different channels, radio signals from the respective transmitters 42-1, 42-2,. , Are likely to leak into the receivers 44-1, 44-2,..., And have a problem that their signals interfere with each other to lower the signal-to-noise ratio.

(3) Since radio waves are used, extraneous noise due to electromagnetic induction, such as taxi radio and city noise, is likely to be mixed in, and such mixing of noise is very difficult for viewers in hospitals, especially patients. Uncomfortable.

(4) Unnecessary noise is mixed in each time the channels are switched to each other, causing annoyance.

An object of the present invention is to solve the above-mentioned problems and to provide an infrared-synchronous remote control transceiver capable of remote control and personal listening with a simple configuration.

[0015]

According to the present invention, there is provided a remote controller for driving a light emitting element by an electric signal for operating an acoustic device and transmitting an infrared light signal. The remote control receives an infrared light signal and converts the signal into an electric signal, and converts the received light signal into the electric signal for operating the acoustic device. An optical receiver for receiving the audio signal of the audio device by synchronizing and detecting the signal, and an earphone jack for guiding the audio signal to an earphone.

The wavelength of the infrared light signal for operating the audio equipment and the wavelength of the infrared light signal for voice are 780 n.
m to 940 nm.

The wavelength of the infrared light signal for operating the audio equipment and the wavelength of the infrared light signal for audio may be different from each other.

[0018] The remote controller may include a speaker for reproducing the received audio signal.

[0019] The remote controller may include an optical signal selecting means for selectively causing the optical receiving section to receive the audio infrared optical signal.

The sound optical signal transmitting means includes a plug inserted into an earphone jack of the audio device, an optical transmitter for converting a sound signal obtained through the plug into an infrared light signal and transmitting the infrared light signal, It may be composed of a plug and a wire connecting the optical transmitter.

[0021]

An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

As shown in FIG. 1, it is assumed that there are two televisions 1 and 1 'as audio equipment equipped with an infrared-synchronized remote control transceiver (hereinafter simply referred to as a remote control) of the present invention. Since the two televisions have the same configuration, each component configuration of the television 1 will be described, and a dash (') will be added to the same part of the television 1'.

The television 1 includes a remote control receiving section 11 for receiving a television operation infrared light signal from a remote control, a microcomputer (built-in) for controlling each section, and a CRT 1 for outputting an image.
2, a speaker 13 for outputting sound, an earphone jack 14 for connecting an earphone, and the like. Further, the television 1 can be provided with an optical signal transmitting means 15 for audio. The optical signal transmitting means 15 for audio is provided with the earphone jack 1.
4 includes a plug 16 that can be inserted into the plug 4 and an optical transmitter 17 that converts an audio signal obtained through the plug 16 into an infrared light signal and transmits the infrared light signal.

The remote control 2 includes a power switch 21 for activating the power of the television 1 and an operation switch 2 for performing various operations.
2. A microcomputer (built-in) that generates an electric signal for operating the television in response to a switch operation, a light emitting element 23 that emits light when driven by the electric signal, receives an infrared light signal for audio and converts it into an electric signal. An optical receiver 24, an earphone jack 25, and the like are provided for receiving a TV audio signal by detecting the received light electric signal in synchronization with the TV operation electric signal. Further, the remote controller 2 has a built-in speaker for reproducing an audio signal, and can connect an earphone set 26 to the earphone jack 25. The earphone set 26 has a plug 27 that can be inserted into the earphone jack 25.
And a wire 28 for transmitting an audio signal from the plug 27
And an earphone 29 for reproducing an audio signal.

The operation of the two televisions 1, 1 'in FIG. 1 will be described.

The viewers H and H 'of the televisions 1 and 1' can independently control the power switches 21 and 21 of the remote controllers 2 and 2 ', respectively.
Is turned on, and the operation switches 22, 22 'are operated to select a desired channel and adjust the volume. The infrared light signals R, R 'for television operation are transmitted from the light emitting elements 23, 23' of the remote controllers 2, 2 ', and received by the remote control receivers 11, 11' of the televisions 1, 1 '. Channel selection and volume control are executed by the microcomputers of the televisions 1 and 1 'that have received the television operation infrared light signals R and R'.

Here, if the plugs 16 and 16 'are inserted into the audio light signal transmitting means 15 and 15' in the earphone jacks 14 and 14 'of the televisions 1 and 1', the speaker 1
The sound of 3, 13 'is turned off, and the sound signal is
The signals are converted into infrared light signals S and S 'by the signals 7 and 17' and transmitted. These audio infrared light signals S and S 'reach the light receiving units 24 and 24' of the remote controllers 2 and 2 ', respectively.
The light is converted into an electric signal by the 4, 24 'light receiving elements (not shown). These electric signals are transmitted to the optical receivers 24 and 24 '.
Is detected in synchronization with the electric signal for television operation in
Thereby, the audio signals of the televisions 1 and 1 'are demodulated. The audio signal can be heard by earphone sets 26, 26 'connected to earphone jacks 25, 25'.

The sound infrared optical signal S of the television 1 is transmitted to the remote controller 2 'by the directivity of the light emitting elements of the optical transmitters 17 and 17', the directivity of the light receiving elements of the light receiving sections 24 and 24 ', and the synchronous detection. It is not received by the optical receiver 24 '. Similarly, the infrared light signal S ′ for audio of the television 1 ′ is
Is not received by the optical receiver 24 of Therefore, even if the two televisions 1 and 1 'or the two remote controllers 2 and 2' are close to each other, no sound interference occurs. Therefore, the viewer can view the video and audio of the channel desired to be viewed without being disturbed by each other.

The configuration of the remote control 2, 2 'for listening to voice will be described in detail.

As shown in FIG. 2, the transmission / reception circuit 200 of the remote control includes a transmission circuit 201, a light emitting element 202, a light receiving element 203, and a synchronous detection type receiving circuit 204. The synchronous detection type receiving circuit 204 includes a switch 20 for switching between an earphone jack 205 and a speaker 206 in a remote controller.
7 is connected. The switch 207 outputs an audio signal to the speaker 206 unless a plug is inserted into the earphone jack 205, and outputs an audio signal to the plug when the plug is inserted.

The transmission circuit 201 drives the light emitting element 202 by an electric signal based on the operation of the operation switch 22 and supplies the electric signal to the synchronous detection type reception circuit 204. When the light emitting element 202 is driven, the television operating infrared light signal R is transmitted. On the other hand, the infrared light signal S for audio is converted into an electric signal by the light receiving element 203. The audio electric signal and the television operating electric signal are input to two input terminals of the synchronous detection type receiving circuit 204 and used for synchronous detection, and the audio signal is output to the switch 207.

The present invention is not limited to the above embodiment.
The audio device to which the present invention is applied is not limited to a television, but may be a radio, a stereo, a tape player, a CD player, or the like. According to the present invention, the remote control and the personal listening can be performed by a single remote controller even for an audio device that does not output an image. Also, headphones may be used instead of the earphones.

The remote controllers 2 and 2 'may be provided with an optical signal selecting means for selectively receiving the audio infrared optical signal by the optical receivers 24 and 24'. For example, the emission wavelength of the light emitting element 202 of the remote controller 2, 2 'and lambda _{1, 2} an emission wavelength lambda of the light emitting element of the audio optical signal transmission means 15, 15' (lambda ₁
), A light wavelength demultiplexing filter (for example, an interference film filter) for selectively transmitting the infrared light signal for audio (wavelength λ ₂ ) is selectively transmitted to the light receiving surfaces of the light receiving elements 203 of the remote controllers ₂ and _{2 ′.} Provide. As a result, the infrared light signal (wavelength λ ₁ ) for television operation can be suppressed from being incident on the light receiving element 203, the signal-to-noise ratio can be improved, and high-quality sound can be reproduced. The wavelength of the infrared light signal for operating the television and the wavelength of the infrared light signal for audio are preferably in the range of 780 nm to 940 nm, and the 870 nm band is particularly preferable.

[0034]

The present invention exhibits the following excellent effects.

(1) When a plurality of people operate respective audio devices and independently listen to voices in a large room such as a conference room, a hospital, a school, etc., the voices of the audio devices of other people are mutually heard. There is no fear of interference, and each person can listen to the desired voice with high quality.

(2) Since remote control such as channel selection and personal listening of voice are performed by a single remote controller, the configuration is small and compact, easy to use, and high performance and low cost can be achieved. . Also, since the signal is transmitted by infrared rays, it does not receive noise due to electromagnetic induction.

(3) By making the wavelength of the infrared light signal for operating the audio equipment different from the wavelength of the infrared light signal for voice and selecting the light signal according to the wavelength, interference and interference between the two light signals can be minimized. The communication quality and stability are improved.

(4) Since remote control such as channel selection and personal listening of voice are performed by a single remote controller, the audio equipment can be used comfortably.

(5) Since the sound optical signal transmitting means can be used by inserting it into an earphone jack provided in the audio equipment, it can be used for existing audio equipment and for general use regardless of the type of audio equipment. Can be.

(6) It is easy to arrange the optical signal transmitting means for audio of the audio equipment and the remote controller so as to be opposed to each other, so that the viewer can surely and stably view. In addition, since the earphone set can be connected to the remote control and used, the viewer can move or lie down.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a television to which an infrared synchronous remote control transceiver according to an embodiment of the present invention is applied.

FIG. 2 is a block diagram of the inside of a remote controller according to the present invention.

FIG. 3 is a configuration diagram of a television provided with a conventional remote controller.

FIG. 4 is a configuration diagram of a television provided with a conventional wireless device.

FIG. 5 is a configuration diagram of a television provided with a conventional wireless device.

FIG. 6 is a configuration diagram when a plurality of televisions are used in one room.

[Explanation of symbols]

 1,1 'TV 2,2' Remote control 15,15 'Optical signal transmitting means for audio 17,17' Optical transmitter 24,24 'Optical receiving unit 25,25' Earphone jack

Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04Q 9/00 301

Claims (6)

[Claims] 1. A remote controller for driving a light emitting element with an electric signal for operating an acoustic device and transmitting an infrared light signal, wherein the audio device converts a sound signal into an infrared light signal and transmits the sound signal. The remote control receives a sound signal of the acoustic device by receiving the infrared light signal, converting the received infrared signal into an electric signal, and detecting the received electric signal in synchronization with the electric signal for operating the acoustic device. An infrared-synchronous remote control transceiver, comprising: a light receiving unit for transmitting the audio signal to an earphone. 2. The wavelength of the infrared light signal for operating the acoustic device and the wavelength of the infrared light signal for sound are 780 wavelengths.
2. The infrared-synchronized remote control transceiver according to claim 1, wherein the wavelength is in the range of nm to 940 nm. 3. The remote controller according to claim 1, wherein a wavelength of the infrared light signal for operating the audio equipment and a wavelength of the infrared light signal for audio are different from each other. 4. The remote controller according to claim 1, wherein the remote controller has a speaker for reproducing the received audio signal.
4. An infrared-synchronous remote control transceiver according to any one of items 1 to 3. 5. The infrared synchronous system according to claim 1, wherein said remote control has an optical signal selecting means for selectively receiving said audio infrared optical signal by said optical receiver. Remote control transceiver. 6. The sound optical signal transmitting means includes: a plug inserted into an earphone jack of the audio device; and an optical transmitter for converting a sound signal obtained through the plug into an infrared light signal and transmitting the infrared light signal. And a wire connecting the plug and the optical transmitter.
Infrared synchronous remote control transceiver according to any of the above.