JPS5827467A - Remote control device - Google Patents

Abstract

PURPOSE:To receive a radio broadcast and to utter its radio sound from a main body, by using a transmitter for remote-control of the main body of the television receiver. CONSTITUTION:In remote-controlling each function of a TV main body 2 with a remote control transmitter 1, a switch 11 is selected to the position (a) and a control signal is generated by operating a keyboard of a control signal generating circuit 3 and the signal is transmitted to the TV main body from a light emitting diode 12 for normal remote control. Further, a radio reception circuit 4 is used to receive a stereo broadcast and a transmission signal from an antenna 38 of the TV main body 2 can be received as the reception signal. In selecting the switches 11 and 13 to the position (b), the broadcast received at a radio reception circuit can be transmitted and reproduced to the TV main body 2 with the diode 12.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remote control device used for remotely controlling a television receiver. A device with a wide range of uses that can be sent to the main unit and emitted from the speaker of the main unit, and can also be used to send television audio received by the television receiver main unit to a remote control transmitter and have it emitted from the user's hand. The purpose is to offer a memorial service.

EMBODIMENT OF THE INVENTION Hereinafter, the present invention will be described in detail with reference to the drawings showing one embodiment thereof.

FIG. 1 shows the configuration of the remote control transmitter 1, and FIG. 2 shows the configuration of the television receiver body 2 in block diagrams. In the remote control transmitter, 3 is a control signal generation circuit that generates a control signal for remote control similar to the conventional one.

Here, a control signal is generated by modulating a carrier wave of about 40 KHz with a pulse code signal depending on the content to be operated, for example. On the other hand, 4 is medium wave AM broadcasting or FM broadcasting.
A radio receiving circuit for receiving broadcasts, which includes an antenna5. Radio chisel 6. Radio detection circuit 7. It consists of a stereo demodulation amplifier circuit 8 and speakers or earphones 9R and 9L. Reference numeral 1o denotes a modulation circuit that performs FM modulation of a carrier wave at a frequency sufficiently distant from the control signal carrier wave, such as 10 KHz, using the radio audio signal received by the radio receiving circuit 4. These control signals and an FM-modulated radio audio signal are selectively switched and extracted by a switch 11, and added to a light emitting diode 12, which is driven to emit an optical signal in the infrared region.

In this case, an ultrasonic speaker may be used instead of the light emitting diode 120 to emit ultrasonic signals. 13
A switch is used to select whether the radio audio signal received by the radio receiving circuit 4 is output to the speaker or earphones 9R, 9L, or sent to the television receiver body 2.

On the other hand, in the television receiver body 2, 14 is a television video receiving circuit, 15 is a television audio receiving circuit, and the former includes an antenna 16° and a television tuner 17.
, VI FljJ@18, consisting of a video screen g19 and a cathode ray tube 2o, the latter of which includes an SIF/audio circuit 21. Audio multiplex demodulation circuit 22. It is composed of an audio amplification circuit 23 and a speaker or earphone 24R124L.

Further, 26 is a photodiode that receives an optical signal from the remote control transmitter 1, and 26 is a preamplifier that amplifies the received signal. If the signal sent from the transmitter 1 is an ultrasonic signal, a microphone is used instead of the photodiode 26.

Only a control signal of a predetermined frequency (for example, 40 KHz) is extracted from the received signal by a bandpass filter 27, and based on this, a control circuit 28 performs a passive code, identification, etc., and sends it to the television video receiving circuit 14 and television audio receiving circuit. Controls the circuit 16 etc.

On the other hand, 29 is an auxiliary audio receiving circuit, which converts the received signal into a predetermined frequency (for example, 10
An FM-modulated radio audio signal of approximately 0 KHz is extracted, detected by an FM detection circuit 31, and further demodulated into a stereo audio signal by a stereo demodulation circuit 32. 33 transmits the radio audio signal sent from the transmitter 1 to the speaker 24R.
, 24L, or the television audio signal is added to the speakers 24R, 24L and output.

Furthermore, 34 is a transmitting circuit which modulates the television audio signal taken out from the audio multiplexing and demodulation circuit 22 via the switch 36 into a composite stereo audio signal again in the stereo modulation circuit 36, and further modulates the television audio signal into a composite stereo audio signal by the FM modulation circuit 37 within the FM broadcast band. A carrier wave of an arbitrary frequency is FM-modulated and transmitted from the antenna 38 to the transmitter 1.

In the above configuration, how to use it will be explained below. First, when remotely controlling each function of the television receiver body 2 using the remote control transmitter 1, switch the switch 11 to the a side and operate the keyboard etc. of the control signal generation circuit 3 to generate a predetermined control signal. By generating and transmitting it from the light emitting diode 12 to the television receiver body 2, normal remote control can be performed.

On the other hand, if the switch of the transmitter 1 is switched to the a side, the audio of radio broadcasts such as medium wave AM broadcasts or FM broadcasts received by the radio receiving circuit 4 can be heard through the speaker in the transmitter 1 or the earphones 9R and 9L. be able to. In other words, it can be used as a portable radio.

At this time, if the switch 36 in the main body 2 is closed and the television audio signal is sent from the transmitting circuit 34, and the radio receiving circuit 4 in the transmitter 1 is tuned to the sending frequency, the main body 2 The sound of the television broadcast being received can be heard at a remote location from the speaker in the transmitter 1 or the earphones SR, 9L held at the user's hand.

The receiving mode (main, sub, monaural, and stereo modes) of the television channels and audio multiplex broadcasts received by the main body 1 can be freely switched by the aforementioned remote control.

Next, by switching the switches 11 and 13 in the transmitter 1 to the b side, the audio signal of the radio broadcast received by the radio receiving circuit 4 can be emitted from the light emitting diode 12 as an optical signal. is received by the auxiliary receiving circuit 29 and sent to the television audio receiving circuit 1 via the switching circuit 33.
5, the speakers 24R, 2 in the main body 2
4L allows you to listen to the received audio of the radio broadcast. Therefore, it is possible to listen with good stereo effect and good sound quality or high volume. Moreover, the radio broadcast program to be received can be selected by the radio receiving circuit 4 provided in the transmitter 1 at the user's hand, which provides good operability and convenience.

As described above, according to the present invention, by using a transmitter for remotely controlling the main body of a television receiver, it is possible to receive radio broadcasts and to emit the radio audio from the main body, or to receive the radio broadcasts from the main body of the television receiver. This makes it possible to obtain a convenient device with a wide range of applications as a sound system, such as being able to listen to received audio using a transmitter at hand.

[Brief explanation of the drawing]

FIGS. 1 and 2 are block diagrams of a remote control device according to an embodiment of the present invention. 1...Remote control transmitter, 2...Television receiver body, 3...2. Control signal generation circuit, 4...2 Geo receiving circuit, 9 R, 9L,
,,,,Speaker or earphones,10,,,,
,,FM modulation circuit, 11, 13. , , , Switch, 12. ,,,,+Light emitting diode, 14 a++++
++ Television video receiving circuit, 15 , , Television audio receiving circuit, 24R924L , , , , ,
Speakers or earbonds, 25...61. , photodiode, 27 , , bandpass filter, 2 B
, Control circuit, 29 , Auxiliary receiving circuit, 33 , Switching circuit, 34 ,
Transmission circuit.

Claims (1)

[Claims] A remote control transmitter for remotely controlling the main body of a television receiver includes a control signal generation circuit that generates a control signal for remote control, a radio reception circuit, and a radio audio signal received by the radio reception circuit. A modulation circuit that modulates a carrier wave with a carrier wave, and an element that emits the control signal and the modulated radio audio signal, and a television video receiving circuit and a television E
17" receiving circuit, an element for receiving the control signal and the modulated radio audio signal, a control circuit for controlling a circuit in the main body based on the control signal, and a receiving circuit for receiving the modulated radio audio signal. an auxiliary audio receiving circuit that adds a radio audio signal to the television audio receiving circuit and generates it from the speaker of the main body; and a radio receiving circuit that modulates a carrier wave with the television audio signal received by the television audio receiving circuit. A remote control device comprising: a transmitting circuit for transmitting data to a remote control device;