JPS6244724B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remote controlled receiver system that allows selection of broadcast receiving stations from a remote location.

Remote control receivers, such as television and radio receivers, are popular among the sick, elderly, and others because they allow the selection of stations from a distance. A device for remotely controlling such a receiver is equipped with an operating device the size of a paperback book, and by operating a control switch provided on this operating device, ultrasonic waves, infrared rays, etc. are emitted, while the receiver is On the side, it receives ultrasonic waves, infrared rays, etc. from the controller and performs channel selection, etc.

However, even in such a remote-controlled receiver, it is essential to operate a switch on an operating device, and it is of no use to patients who cannot move their limbs.

On the other hand, with the development of semiconductor technology and information processing technology, devices that can recognize speech have been made into LSIs, and small speech recognition devices that are small enough to fit in the palm of the hand and can recognize speech have been developed.

In view of this, in the case of television, a system has been proposed in which the number of channels or the name of the broadcasting station is pronounced, the voice is recognized, and the desired channel, ie, the desired broadcast, is selected.

However, the names of channels and broadcasting stations vary depending on the region, and children and the elderly may not be able to associate the number of channels or the name of a broadcasting station with the desired program. It may be meaningless.

The present invention was made in view of these points, and instead of recognizing the number of channels or the name of the broadcasting station based on audio, the present invention recognizes the program name or the name of the main character of the program based on audio. The purpose is to select a channel that is broadcasting a desired program, and will be described in detail below.

The figure is a block diagram showing the configuration of the present invention.
The case of a television receiver is taken as an example. In the figure, 1 is a transmitter that emits a signal to remotely control a television receiver 2 placed at a distance, and is usually about the size of a paperback book.
It is easy to carry. This transmitter 1 is broadly divided into a transmission medium generating device 3 for generating a signal transmission medium for transmitting a remote control signal to a television receiver 2, and a voice recognition device 4 for recognizing voice.

First, the transmission medium generator 3 will be explained.

11 is a clock pulse source, the frequency of which is selected to be 40 KHz, for example. A frequency divider 12 divides the frequency of the clock pulse from the clock pulse source 11, and divides the clock pulse into a frequency division ratio according to a frequency division ratio determination signal based on the recognition result of the speech recognition device 4.
The denominator is 1/9 in steps of 10 over the range 1/95 to 1/285.
5. The frequency is divided according to one of the frequency division ratios such as 1/105, 1/115, etc. Reference numeral 13 denotes an integrating circuit, which converts the pulse frequency-divided by the frequency divider 12 at an arbitrary frequency division ratio into a triangular wave or a positive wave to facilitate EM modulation.

Reference numeral 14 denotes an astable multivibrator constituting the FM modulator, and by controlling its frequency (40 KHz) with the output of the integrating circuit 13, it generates an FM modulated signal. 15 is an output amplifier, and 16 is a transmitter that converts the electric signal from the amplifier 15 into an ultrasonic signal as a signal transmission medium, and a transmitter made of ceramic is suitable.

Next, the voice recognition device 4 of the transmitter 1 consists of the following: A microphone 20 that converts audio into electrical signals, an amplifier 21, bandpass filters 22, 22, etc. arranged in parallel to separate audio signals into appropriate audio bands, and respective filters 22, 2.
Detectors 23, 23... provided corresponding to 2...
, an analog multiplexer 24, an A-D conversion circuit 25, and a reference pattern from a memory 26 storing a large number of reference patterns of model voices.
- a comparison circuit 27 that compares the referenced audio signal from the D conversion circuit 25; and a signal source that generates a division ratio determination signal for the frequency divider 12 based on the comparison result in the comparison circuit 27; It consists of 28.

This speech recognition device 4 will be explained in more detail. Reference patterns of model voices are stored in advance in the memory 26. For example, voice patterns such as ``News Center 9 o'clock'' and ``Burning Grass'', which are representative programs of NHK station, are converted into digital signals and stored. On the other hand, the audio signal from the microphone 20 is passed through bandpass filters 22, 22...
For example, audio 100-500Hz, 500-1000Hz,
Divide into specific frequency bands such as 1000~2000Hz, 2000~3500Hz, 3500~5500Hz, etc., and install two detectors for each band.
3, 23, . . . and provided to the analog multiplexer 24. The multiplexer 24 detects each band and converts the audio signals arriving in parallel into a serial signal, and the A/D converter 25 converts the serial signal into a digital signal. The digitized audio signal thus obtained is supplied to the comparator 27, where it is sequentially compared with each audio pattern stored in the memory 26, and the audio pattern with the smallest difference, for example, "The grass burns," is selected. It outputs the sound pattern "Burning Grass" to the signal source 28, assuming it to be the same as the incoming audio signal at that time, and outputs a signal to the terminal corresponding to the NHK station broadcasting this "Burning Grass" to separate it. The frequency division ratio of the frequency generator 12 is determined. In addition to this, if you pronounce "Star Thousand and One Nights" or "It's 8 o'clock, everyone gather", the voice recognition signal source 4 will recognize these voices in the same way and transmit the corresponding ultrasonic signals. A television receiver 2 receives the ultrasonic signals, selects a broadcasting station corresponding to each signal, and performs channel switching, etc.

On the other hand, the television receiver 2 includes an ultrasonic microphone 30 that receives ultrasonic waves from the transmitter 16 of the transmitter 1 and obtains an electrical signal, an amplifier 31 that amplifies the electrical signal, and an FM detector 32. , a signal discrimination circuit 33, and a control signal obtained from this discrimination circuit 33, specifically, a television reception whose operation is controlled by instruction signals for turning on/off the power, selecting a channel, adjusting the volume, etc. It consists of a circuit 34 and a cathode ray tube 35.

Thus, the voice recognition device 4 that constitutes the transmitter 1
For example, when you pronounce "grass burns" into the microphone 20, this speech recognition device 4 recognizes this "grass burns" and sends a signal to the frequency divider 12 of the transmission medium generator 3 based on the recognition result. , outputs a frequency division ratio determination signal corresponding to the broadcasting station broadcasting this program, that is, the NHK station. This frequency divider 12 is
Frequency division ratio associated with NHK station, e.g. 1/9
5 divides the 40KHz clock pulse from the clock pulse source 11, passes through the integration circuit 13, and then the FM modulator 14 converts the 40KHz clock pulse to 40KHz to 1/95.
The frequency-divided signal is subjected to FM modulation, and the FM signal is amplified and output as an ultrasonic wave from the transmitter 16.
The ultrasonic microphone 30 of the television receiver 2 that receives this ultrasonic wave converts it into an electrical signal, amplifies it with an amplifier 31, detects it with an FM detector 32, and introduces it into a signal discrimination circuit 33. . The signal discrimination circuit 33 discriminates that this incoming signal is a signal frequency-divided by 1/95, and issues the corresponding command, i.e.
Instructs the image receiving circuit 34 to select an NHK station. Similarly, when selecting another station, the program is transmitted to the image receiving circuit 34 by saying things like "Star Thousand and One Nights" or "It's 8 o'clock, everyone gather" into the microphone 20 of the controller 1. You will be given instructions to change to a channel that corresponds to the broadcasting station that is broadcasting.

On the other hand, for young children and the elderly, they often remember broadcast programs not by the name of the program, but by the names of the characters. Therefore, by adding a function to the voice recognition device 4 that can recognize the voices of ``Yoritomo'', ``Drifters'', ``Kyosen'', etc., ``Yoritomo'' will be sent to the NHK station, and ``Drifters'' will be sent to the NHK station.
It corresponds to NBS stations, ``Kyosen'' corresponds to YTB, etc., and it is possible to select each broadcast station, and it is possible to select stations from the characters.

In the above explanation, FM-modulated ultrasonic waves are used as the medium for transmitting remote control signals from the transmitter 1 to the television receiver 2, but the present invention is limited to ultrasonic waves. GaAs without any problems
It is also possible to use infrared light using a combination of a light emitting diode and a phototransistor.

Furthermore, although the above description has been made using a television receiver as an example, it goes without saying that the present invention can also be applied to a radio receiver.

As is clear from the above description, the present invention incorporates a voice recognition device capable of recognizing the program name and the names of the main characters in the program in voice into a transmitter that transmits a remote control signal. By simply uttering the name of a desired program or the names of its main characters, the broadcasting station broadcasting the program can be selectively received, improving the versatility of remote channel selection by voice.

[Brief explanation of the drawing]

The figure is a block diagram showing the configuration of the system of the present invention, in which 1 is a transmitter, 2 is a television receiver,
3 is a transmission medium generator, 4 is a speech recognition device, 12
is a frequency divider, 14 is an FM modulator, 16 is a transmitter, 2
2 is a bandpass filter, 23 is a detector, 24 is a multiplexer, 25 is an A-D conversion circuit, 26 is a memory, 27 is a comparison circuit, 32 is an FM detector, 3
3 indicates a signal discrimination circuit.

Claims (1)

[Claims] 1. Consisting of a transmitter that transmits a remote control signal, and a broadcast receiver incorporating a signal receiver that receives the remote control signal from the transmitter, the transmitter has a voice-based A broadcasting station recognition circuit that recognizes the name of the program being broadcast by the broadcasting station is built in, and this transmitter transmits a remote control signal to select the broadcasting station recognized by the circuit, and the broadcast receiver A remote control receiver system is characterized in that a signal receiver receives this remote control signal and the broadcast receiver selectively receives a broadcast from a broadcasting station that broadcasts a program issued by voice. 2. Consists of a transmitter that transmits a remote control signal, and a broadcast receiver with a built-in signal receiver that receives the remote control signal from the transmitter. A broadcast station recognition circuit that recognizes the names of the main characters that appear is built in, and this transmitter transmits a remote control signal to select the broadcast station recognized by the circuit, and the signal receiver of the broadcast receiver A remote-controlled receiver is characterized in that it receives this remote control signal and selectively receives broadcasts from broadcasting stations that broadcast programs in which characters appear that are voiced by the broadcast receiver. system.