JPS58114592A - Remote control system with voice input - Google Patents

Abstract

PURPOSE:To transmit a voice by wireless and to perform necessary operation switching, by converting a control signal for the operation switching through a code converting means, modulating a voice input through a modulator, and switching those two signals to transmit with one remote control transmitter. CONSTITUTION:The operation control instruction of a tape recorder is generated by a key input device 1 and a key encoder 12 generates a transmitted signal. A microphone 13, on the other hand, converts a voice signal into an electric signal, which is sent to an amplifier 14, whose output is sent to an FM oscillator 15. A carrier generated through the oscillation of the FM oscillator 15 or the transmitted code generated by the encoder 12 is selected by a switch 16 and radiated to the air from an infrared ray emitting diode 6 through a driver 17. Those devices are made into one handy transmitter set. On the other hand, an infrared- ray signal sent from the infrared-ray emitting diode 6 on a receiver side is received by a photodetector 7, and supplied to a decoder 18 or an FM demodulator 19.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remote control system that not only performs manual key operation switching control in the case of a conventional remote control device, but also provides voice input for all genders.

remote control device, i.e. remote control device (
The remote control device (hereinafter referred to as the remote control device) is a television.

It is often used in stereos, air conditioners, etc., and is useful for easy operation.

Conventional remote control devices have used a frequency division method using ultrasonic waves to transmit commands, but in order to ensure accurate operation, an i+rus code modulation <pcM) method using infrared sound is now often used. Additionally, the remote control transmitter has been made smaller and consumes less power.

This is largely due to the PCM method and 0MO8LSI.

FIG. 1 is a block diagram of a transmitter/receiver of a conventional remote control device. In FIG. 1, 1 is a key of a remote control device which generates commands and which generates input command signals. The digital signal from the key 1 is sent to a key encoder 2, where it is converted into a digital code, and the output of this key encoder 2 is sent to a modulator 3.

A digital signal from the key encoder 2 is modulated by a clock modulator 3 generated from a clock oscillator 4 having a sufficiently short period, and converted into a PCM signal. This PCM signal is driven by the driver 5, and further the infrared light emitting diode 6 is turned on and off to generate all the infrared remote control signals.

The configuration of the transmitter has been described above, and next, the receiver will be described.

On the receiver side, an infrared signal sent from a transmitter is received by a light receiving element 7, amplified by an amplifier 8, and input to a PCM signal demodulator 9. The oscilloscope code signal demodulated by the demodulator 9 is converted into an output signal by the decoder 10, passes through the driver 11', and is output as a contact drive signal or the like.

The transmitter 01ll of such a remote control device is a handy set that is equipped with all the keys for command generation. It is fully effective in switching the operation of the set. Among stereo devices, the remote control device is particularly effective when used to switch the operation of a recording device such as a tape recorder or a cassette deck.

For example, when recording music from a radio or the like on a recording device, a remote control device is effective in preventing unnecessary signals such as commercials and commentary, or unnecessary recording of all unnecessary songs. That is, when recording, the operator has the device at a certain distance to monitor the music. Therefore, when there was no remote control device, the user had to move to the side of the set when recording was not necessary, but the remote control device has completely improved this and has the effect of allowing the user to switch operations while on the go.

However, if you wanted to add the title of the recorded music or the recorder's own commentary before or after the song, you had to move to the side of the set, input the audio through the microphone, and record.

However, this reduces the effectiveness of the remote control device by half.

This invention was made to eliminate the above-mentioned drawbacks of the conventional technology, and an object of the present invention is to provide a remote control system with voice input that can wirelessly transmit audio to a system to which it is desired to remotely input audio, and that can also perform necessary operation switching. shall be.

Embodiments of the remote control system with voice input according to the present invention will be described below with reference to the drawings. FIG. 2 is a block diagram showing the configuration of one embodiment of the present invention, and shows the case where it is applied to a remote control device such as a tape recorder. In FIG. 2, the transmitter side will be described first. 1 in the figure is a key manual device that generates all operation control commands for the tape recorder in the remote control device as in FIG. be.

On the other hand, 13 is a microphone, and this microphone 1
3 converts the audio signal into an electrical signal and sends it to the amplifier 14. The amplifier 14 is for amplifying the electrical signal from the microphone 13 to a constant level, and its output is sent to the FM oscillator 15. The FM oscillator 15 must oscillate at a carrier frequency sufficiently higher than the audio frequency, so that the carrier frequency changes depending on the audio input applied.

The carrier wave oscillated by the FM oscillator 15 and the transmission code generated from the encoder 12 are transferred to the switch 1 as necessary.
6, the infrared light emitting diode is selected to emit light into space through the entire driver 17.

The above are all outputs from the transmitter, and are combined into one handy set.

On the other hand, on the receiver side, the infrared light emitting diode on the transmitter side,
The infrared signal sent from the doro is received by the light receiving element 7, amplified by the amplifier 8, and then sent to the PCM demodulator according to the input signal.
The signal is supplied to a decoder 18 or an F'M demodulator 19 composed of a decoder.

The PCM signal demodulated by the decoder 18 is similar to the case in FIG. 1, and passes through the driver ll'fr: to drive the contacts necessary for control. Also, the demodulator 19
The demodulated audio signal is demodulated by an FM demodulator 19 such as a one-shot multivibrator or a PLL circuit, and after the carrier component is removed by a low-frequency transducer 20,
The signal is supplied to a recording head 22 and recorded on a magnetic tape (not shown).

Further, a microphone 21, which has been conventionally provided in a tape recorder, is also connected in parallel to the recording head.

As is clear from the above configuration, the operation control of the tape recorder and the audio signal to be recorded can be transmitted using a single remote control device by switching. Using this remote control device, you can monitor all the music from a distance from the tape recorder, select and record stations, and record song titles and explanations using your voice while you are away.

As described above, in the first embodiment, the transmitter of the remote control device is connected to the main body side, that is, the remote control transmitting means for switching the operation of the controlled device and the remote transmitting sound for voice input. It is unique in that it is integrated into a transmitter.

In this first embodiment, the infrared light emitting diode and light receiving element for transmission and reception are shared by the switching control signal and the back door modulation signal, but the present invention is not limited to this, and the specific examples are shown below. A second embodiment will be described later with reference to FIG.

Furthermore, the application is limited to tape recorders.
:do not have. Further, in the above embodiment, the voice is transmitted by fully modulating the carrier wave with the signal as it is, but the present invention also includes a case where the voice signal is converted into an iPC]Vf signal and transmitted.

In this case, simply converting the audio signal to kPcMPc will result in
Compression of PCM signals is performed because the amount of information is so large that it is impractical. An example is ADM.

A compression method called AI) PCM is used.

As described in detail above, in the first embodiment, the control signal and the audio signal can be transmitted through one remote control transmitter, so it is possible to transmit the control signal and the audio signal through a single remote control transmitter. If you want to apply it to a device, you will be able to wirelessly transmit all audio using one handy transmitter, and also be able to switch operations as necessary.

FIG. 3 is a block diagram showing a second embodiment of the invention. This second embodiment applies a wireless microphone that uses radio frequencies and can bring about the same effects as the above embodiment.

In FIG. 3, the upper side shows all the audio transmitters, and the lower side shows the audio receiver. Note that the remote control device for controlling the operation switching is the same as that described in the above embodiment, and will therefore be omitted.

In FIG. 3, 13 is a microphone for inputting audio, 14a is a preamplifier, and 24 is a VHF band carrier wave oscillator, the output of which is FM-modulated by an FM modulator 23 with an audio signal. This FM modified carrier wave passes through a high frequency output amplifier 25 and is radiated into the air from an antenna 26. This carrier frequency is VHF without broadcast waves.
selected as the radio frequency band.

The carrier wave radiated from antenna 26 is received by a radio receiver. This radio receiver is shown at the bottom of FIG. 3 and normally operates as a radio receiver that receives all broadcast waves. Antenna 2 of this radio receiver
The carrier wave received at 7 is amplified by the high frequency amplifier 28 and converted to an intermediate frequency by the output of the local oscillator 30, ρ by the mixer 29, υ amplified by the intermediate frequency amplifier 25, and 9 demodulated to the original audio signal.

Here, a frequency synthesizer whose frequency can be electrically easily controlled is used as the local oscillator 30, making it easy to switch between audio and operation control.

Furthermore, a frequency synthesizer is composed of a PLL circuit, a digital programmable counter, etc., and can perform frequency control externally. It also uses the synthesizer's PLL feedback and voltage to control the tuning of the high-frequency amplifier.

Taking advantage of the fact that the frequency can be controlled digitally, the frequency synthesizer is equipped with an external preset memory 32 that stores all received frequencies, and a memory readout terminal 33 that stores all of the frequency sounds being broadcast. You can now select a station with one touch.

If the remote control carrier frequency is stored in one of the preset memories 32, all radio waves can be immediately transmitted from the remote control transmitter to the radio receiver. For example, the second embodiment is applied to a so-called radio-cassette player in which a recording cassette deck and a radio receiver are integrated.

As explained in the first embodiment, by using a transmitter that is a handy set that includes an oscillator for switching the operation of the cassette deck and an FM oscillator for audio transmission, switching operations and recording can be performed while the user is away, as explained in the first embodiment.

First, you receive broadcast waves with a radio receiver and record them using a cassette deck.Next, if you want to record your own voice on the same tape, press the voice recording key on the handy transmitter and the receiver will record the broadcast waves. The frequency synthesizer of the local oscillator is immediately set to remote whitening radio waves, allowing it to receive the carrier wave modulated by the voice sent from the handy transmitter.

The audio signal is sent to the radio receiver! ll demodulated and amplifier 3
4, all of which are recorded at the required position on the cassette tape.

As described in detail above, according to the remote control system with voice input of the present invention, a control signal for switching the operation of a controlled device is converted into a transmission signal by the code conversion means, and a voice input signal is input to the transmitter of the remote control device. The signal is modulated by a modulator, and the output signal of the modulator and the output signal of the code conversion means are all selectively switched and transmitted by one remote control transmitter.
You can wirelessly transmit audio while you are in the system where you want to transmit audio from a remote location, and you can also perform all necessary operation switching.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a conventional remote control device, Fig. 2 is a block diagram showing the configuration of an embodiment of the remote control system with voice input of the present invention, and Fig. 3 is a block diagram of the remote control system with voice input of the present invention. FIG. 3 is a block diagram showing the configuration of another embodiment. 1... Input device, 12... Key encoder, 13.
...Microphone, 14...Amplifier, 14a...Preamplifier, 15...FM oscillator, 16...Switch, 6...Infrared light emitting diode i/do, 17...Driver, 23...FM modulator, 24...carrier wave oscillator, 25...day frequency amplifier, 26...antenna.

Claims (1)

[Claims] A key human power device that generates a control signal for switching the operation of the controlled device, a code conversion means that converts the control signal from the key human power device into a transmission signal, and a conversion device that completely modulates the audio input. The output of this modulation means and the above code cut ↑2
A remote control system with audio input, consisting of an output and a means for selectively switching all and transmitting one or the other.