JPH07295471A - Information transmitting apparatus for people hard in hearing - Google Patents

Abstract

PURPOSE:To provide an information transmitting apparatus for people hard in hearing which is excellent in information transmission reliability by carrying out output in other mode different from a constant mode when carrier waves or encoded signals can not be received and has excellent power saving properties. CONSTITUTION:Voice signals are detected by a microphone 8, only the signals within a necessary band range are transmitted, sent to an A/D input 53 of a microprocesser 5, and converted into digital values. To carry out transmission, the output of the VCO3 is made to be carrier waves, the modulated waves are made to be FSK signals of binary signals, serial signals 52 from a MPU 5 are made to be FSK signals, and then transmission is carried out through an antenna 71. Meanwhile, the FSK signals received are demodulated, converted into digital signals, and if there is no bit cycle signal, all the channels are tried repeatedly until reception is done and the subharmonic frequency of the reception frequency is determined. At that time, in the case where there is no signal even if all the channels are tried, the reception frequency is determined again or output is done in a mode which shows a user is in a dead zone of electric power.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for transmitting information to a hearing-impaired person, which is excellent in reliability of information transmission.

[0002]

2. Description of the Related Art According to a survey conducted by the Ministry of Health and Welfare, a person who has a deafness in his / her daily life is about 600
There are many people, and among them, 2 to 6 are certified as physically handicapped.
There are about 340,000 hearing-impaired people. The presbycusis of these people is cared for and cared for and does not interfere with their daily lives, but people with other healthy parts of the body, for example, at home, may hear a door chime or a telephone / fax ringing sound from a visitor. , Crying infants, responding to kitchen timers, boiling water alarms, or avoiding danger with various alarms,
Outside the home, knocking at hotels, calling at banks, post offices, hospitals, government offices, responding to group travel, etc.
It is difficult to communicate information by voice in social life.

Therefore, as disclosed in Japanese Unexamined Patent Publication (Kokai) No. 48-79515, a microphone detects a voice signal, and the signal is used to modulate and transmit a weak radio wave which does not require a license application for a radio station. However, it is known that the radio waves are transmitted to a receiver carried by the receiver, and the occurrence of an audio signal is transmitted to a hearing-impaired person by a display device such as a vibration or a lamp. However, with this method, since only weak radio waves can be used, it may not be received in the shadow of the radio waves of furniture, shields, etc., and since the reliability of information transmission is low,
It is gradually becoming obsolete.

When a user's code and communication information are input from a telephone, such as what is usually called a pager for calling a user wirelessly, the signal is wirelessly transmitted from the central office and the user's code is transmitted. It is known that only the user of the receiver that matches the above will receive a call with a ringing sound or the like. Furthermore, a method of transmitting the fact that a call has been made by vibration instead of ringing has been developed and put into practical use. In addition, a mobile phone using wireless for bidirectional information exchange is known as a cellular mobile phone.

[0005]

By the way, if a transmitter for transmitting such a voice signal or a calling signal is a device that does not require a wireless license, it will impose a burden on the hearing-impaired person to apply for a license, etc. Is difficult. In addition, in the method of calling the telephone, when the recipient is in a place called a dead zone where radio waves do not reach, the recipient himself may not be aware of it and may not be able to confirm that the call was made.
In the case of a mobile phone, the receiver receives a call from the receiver with a specific code,
If the caller does not make the call, the caller is notified by calling again that there is no call, so that it is possible to supplement the information transmission to the receiver in the dead zone. However, if this method is applied to the transmission of information to a hearing-impaired person, it is difficult to receive important or urgent information for the hearing-impaired person at that time in terms of social life or rapid information transmission. May be. In addition, in calls and mobile phones, in order to answer a call when you do not know when you will be contacted, power must be supplied only to the input part of the receiver at all times, which makes it difficult to reduce power consumption. Is.

[0006] It is an object of the present invention to provide an information transmission device for a hearing-impaired person, which is excellent in reliability of information transmission and also has a low power consumption.

[0007]

An information transmitting apparatus for a hearing-impaired person according to the present invention comprises a transmitter for transmitting a carrier wave at all times, an input terminal, and a constant coded signal when an input signal is detected. , A receiver which receives the transmitted signal and outputs a certain mode as an output corresponding to the code, and when the carrier wave or the coded signal cannot be received, is different from the mode. It is characterized by performing the output of the mode of.

Further, the receiver is powered on for a certain time T
Each time _{1 is} supplied for a time t _{R which} is relatively shorter than the repetition cycle, and when the carrier wave or the coded signal cannot be received within a fixed time T, the mode other than the mode is output. In this case, it is preferable that the power consumption of the receiver can be reduced and the receiver can be always carried. Also in the transmitter, if the carrier wave is always transmitted at a constant time T _{2 for a} time t _{X which} is relatively shorter than the repetition period, the battery mounted on the portable receiver can be downsized and used for a long time. It is possible and preferable. At this time, a predetermined encoded signal can be used instead of the carrier wave. Furthermore, the power consumption can be further reduced by combining such a transmitter and a receiver.

Further, each of the plurality of transmitters is given a unique code, and the code is inserted in the same field (a set of transmission signals) as the signal transmitted when the input signal is detected. The receiver can determine from which transmitter the signal is transmitted. In this case, it is necessary to provide the receiver with a means for analyzing a code peculiar to the transmitter and change the output mode according to the result of the analysis means.

In addition, before the transmitter transmits, the transmitter always receives the frequency to be used, confirms that the frequency is not used, and then transmits.
This is preferable because it can eliminate transmission interference.

Further, a code for distinguishing one or more transmitters and one or more receivers from one group is used,
By inserting the code in the same field as the signal to be transmitted when an input is detected, information transmission by multiple groups, such as gathering of hearing impaired people, sports competitions,
This is preferable because it facilitates group convocations, meetings and other information transmission at schools.

As an input signal used in the present invention, a switch may be provided at the input terminal of the transmitter, and the input signal may be generated by turning the switch on or off. Further, a voice sensor such as a microphone may be provided at the input terminal. It is also possible to generate an input signal by inputting voice. At this time, by providing noise from the voice signal, a filter that cuts the signal in the band other than the required voice, or a clipper circuit that cuts the transient input signal, and an integrating circuit that delays the transient input signal. It is preferable because the reliability of information transmission by a voice signal can be further enhanced.

As an output of the receiver, by providing an eccentric flywheel on the motor to vibrate, the fact that an input signal is present can be transmitted by the vibration, and the type of the input signal can be discriminated from the vibration. The output mode can be changed by changing the strength, frequency, frequency of vibration, or a combination thereof. Also, as the output of the receiver, such as 2 used in an electric massager, etc.
AC voltage generated between two terminals using two conductive terminals that come into contact with one skin, and change the output mode by changing the strength of the AC voltage, the number of signals, the number of cycles, or a combination of these Can also be used.

Further, a display means for discriminating the type of the transmitter or the type of the input signal as the output of the receiver, for example, a lamp, an LED (light emitting diode) or an LCD (liquid crystal) display device is used. By displaying, it is possible to facilitate the discrimination of the input signal together with the vibration and the electrical stimulation, which is preferable.

The transmitter used in the present invention is preferably one that requires a small amount of electric power and does not require the user to use the radio wave. For example, the wireless equipment of the system adopted in the base unit and the handset of a cordless telephone, RCR-ST at 400MHz
D-16, wireless equipment for transmitting automatic measurement data of water level and furnace temperature.

As the information modulation method, it is preferable to use one that can be coded from the viewpoint of signal reliability.
K, FSK, PSK, PWM, PCM, etc. can be used to superimpose on the carrier wave, and any structure of the transmitter can be used as long as it has been conventionally used for code communication. You can Preferred methods include channel selection, transmission frequency stability, miniaturization,
Those with low power consumption and the like are preferable, for example, a PL controlled by a microprocessor and a built-in program.
Those equipped with L and VCO are preferable.

As the receiver for receiving the transmitted signal, any receiver can be used as long as it has an input circuit with excellent selectivity and a circuit for demodulating the modulated signal. As a preferable system, a system provided with a microprocessor and a PLL or VCO controlled by a built-in program as well as the transmitter is preferable.

In order to perform the output in the mode corresponding to the code by using the demodulated signal, when a motor provided with an eccentric flyhole is used, all vibration modes corresponding to the code are stored in advance. If a program for selecting a vibration mode is provided by inputting a signal, it can be realized, and electrical stimulation of the skin and display can be similarly performed, which is preferable.

When the carrier wave or the coded signal cannot be received, a program for monitoring the demodulated signal of the receiver is provided in order to output a mode different from the code, and the demodulated signal is received within a fixed time. When it cannot be received, a program may output and / or display a mode other than the above-mentioned audio signal. In this way, it is possible to respond to the case where the radio wave cannot be received by the program, and in this case, the device can be downsized, which is preferable.

Similarly, a program can be used to give each of the plurality of transmitters a unique code and insert the code in the same field as the signal to be transmitted when an input signal is detected. In this case, it is more convenient for the receiver if the transmitter distinguishes between the door chime and the telephone bell.

Further, in this case, each of the plurality of receivers is provided with a program for analyzing a code peculiar to the transmitter,
This distinction can be realized by changing the output mode according to the result of the analysis.

Similarly, before the transmitter transmits, a similar program is used to receive a plurality of frequency bands used in advance, and the same frequency band as that frequency band is used. You can check that the radio waves are not being used.

Further, a code similar to the above code and its analysis program is used to distinguish when one or more transmitters and one or more receivers belong to one group. By inserting the code in the same field as the signal to be transmitted, a plurality of information can be transmitted simultaneously in the same reception area, for example,
Information can be reliably transmitted to each group for meetings of hearing-impaired persons and information transmission at school, and social life can be carried out more smoothly.

[0024]

According to the present invention, a transmitter that always transmits a carrier wave and transmits a constant coded signal when an input signal is detected, and a transmitter that receives the transmitted signal and outputs a mode corresponding to the code When the carrier that does not receive the carrier wave or the coded signal cannot be received, the user can be notified that the radio wave has entered the dead zone by outputting in a mode different from the code. it can. In addition, power consumption can be suppressed by periodically supplying power to the transmitter and the receiver. Furthermore, depending on the type of calling code, a plurality of relationships can be created between the receiver and the transmitter, and information can be exchanged in a plurality of groups without interference.

[0025]

[Embodiment] The configuration of the transmitter used in one embodiment of the present invention is as follows.
FIG. 1A shows the configuration of the receiver, which is shown in FIG. "Common specifications" The frequency used for this device is 429,2
50 MHz to 429,7375 MHz, channel spacing 12.5 kHz, number of channels 40, modulation method is F
As SK, the contents in one field of the signal to be transmitted are, as shown in FIG. 2, a bit synchronization signal that informs the receiver that it is data transmission, a frame synchronization signal that informs the receiver of the calling code, and transmission information. And a data signal indicating the contents of the above, and an empty signal indicating the end of transmission.

[Outline of Configuration of Transmitter] This transmitter has a temperature-compensated crystal oscillator (TCX) as shown in FIG.
O) 1, a phase-locked loop circuit (PLL) 2, and a programmable frequency divider 31 having a voltage-controlled oscillator (VC).
O) 3, transmission amplifier 4, program ROM (read only memory), work memory RAM (random access memory), interface input / output port, and 4-bit microprocessor (MPU) 5 having a built-in counter timer, transmission Transmission / reception switching RF switch 6, LC filter 7, microphone 8, audio amplifier / filter 9, display LCD that is switched depending on the signal
10, reception amplifier 11, mixer 12, IF (intermediate frequency)
It comprises an amplifier 13, an antenna 71, a power supply circuit, a battery, and a charger that also serves as an AC power supply adapter.

The transmitter is composed of TCXO1, PLL2, VCO.
This is a synthesizer circuit composed of 3, a transmission amplifier 4, an MPU 5, an RF switch 6, an LC filter 7, a microphone 8, an audio amplifier / filter 9, and an antenna 71.

The receiving unit is composed of TCXO1, PLL2, VCO.
3, MPU 5, RF switch 6, LC filter 7, reception amplifier 11, mixer 12, IF amplifier 13, antenna 7
1 is a synthesizer type single super receiver.

The synthesizer portion oscillates the transmission frequency f _X and the reception local oscillation frequency f _R in the VCO ₃ and divides the oscillation signal to 12.5 kHz by the programmable frequency dividing circuit 31 incorporated in the VCO 3. And TCXO
Divide the signal that oscillates at 1 to obtain the same channel interval as 1
This is to compare the phase of 2.5 kHz and the phase by the PLL circuit, detect the phase / voltage, and control the oscillation frequency of the VCO 3 by the voltage. In the operation of this synthesizer, when channel 0 (frequency 429, 250 MHz), the transmission frequency is divided by 34,340, and T
It is compared with the CXO oscillation frequency of 10.7 MHz divided by 856. Also, when receiving, 429.25
41 which subtracted intermediate frequency 10.7MHz from 0MHz
VCO3 to oscillate a frequency of 8.550 MHz
The output of is divided by 33,484. Here, the relationship among the frequency division number N _X in the case of transmission, the frequency division number N _{R in} the case of reception, the intermediate frequency f _i , the transmission frequency f _X , and the local frequency f _R for reception is the channel n as a subscript. When expressed,

[0030]

F _nX = 429,250 + 12.5n (kHz) f _nR = 429,250-10,700 + 12.5n (kHz) N _nX = 34,340 + n N _nR = 34,340-856 + n. Therefore, it suffices to set this in the programmable frequency dividing circuit, but if this frequency dividing number is used as it is, it becomes a binary value of 16 bits, so if a 4-bit MPU is used, four accesses are required. . Therefore, among these numerical values, the input of the programmable frequency dividing circuit is fixed in advance for the bits that are fixed and do not change.
Here, if the frequency division numbers of 0 channel and 39 channel of transmission and reception are expressed in both decimal and binary,

[0031]

(2) Transmission: 0 channels; 34,340 ₁₀ = 1000,0110,0010,0100 ₂ 39 channels; 34,379 ₁₀ = 1000,0110,0100,1001 ₂ Reception: 0 channels; 33,484 ₁₀ = 1000,0010,1100,1100 ₂ 39 channels; 33,523 ₁₀ = 1000,0010,1111,0011 ₂ , so the 11th and 8th bits can be switched for switching between transmission and reception, and 1 to 7 bits can be switched for channel switching. Since the output of 8 bits is sufficient, the frequency division number can be set by outputting at most twice.

[Operation of Transmitter] (Confirmation of Frequency Used) Prior to transmission, the frequency to be transmitted is received via the antenna 8, the LC filter 7, the RC switch 6, and the reception amplifier 11, and the output 51 from the MPU 5 is received.
Then, the frequency division number corresponding to the reception frequency f _R, which is obtained by shifting the frequency f _X to be transmitted by the intermediate frequency f _i , is output to the programmable frequency dividing circuit 31 of the VCO _3, and the VCO ₃ outputs the reception frequency f _R from the VCO ₃ to the mixer. The signal is input to 12, mixed with the received signal to take out an intermediate frequency signal, selected and amplified by the IF amplifier 13, and the output is input to the A / D input terminal 55 of the MPU 5, and the MPU 5 demodulates the received signal. Then, digitize it and confirm that the frequency is not used for communication.

(Input detection) The voice signal is the microphone 8
Is detected by the A / D input 53 of the microprocessor 5 through the audio amplifier / filter 9 which passes the signal only in a necessary band or processes and amplifies noise and excessive voice, and a digital value. Is converted to. The converted audio signal produces a signal for transmission and is also displayed on the display device 10.
Further, instead of inputting a voice signal by the microphone, a call signal can be obtained by directly turning on / off the power supply voltage to the input terminal 53 of the MPU with a switch.

(Transmission) In transmission, the output of the VCO 3 is used as a carrier and the modulated wave corresponds to 0 of the binary signal.
8 kHz, 1 corresponds to a 9.6 kHz FSK signal, the serial signal 52 from the MPU 5 is used as an FSK signal, is modulated and amplified by the transmission amplifier 4, and is switched to transmission by the output of the transmission amplifier 4 and the RF switch 6. , Is transmitted from the antenna 71 via the LC filter 7 that shields unnecessary radio waves. At this time, when no voice or switch input is detected, only 0 of the FSK signal is set, or a code different from that when there is voice is transmitted.

(Power Saving) The power supply circuit of the transmitter includes a switching regulator for boosting the battery voltage, a switch for turning on / off the power supply, a charging / backup output including a capacitor for backing up the timer circuit and a constant voltage diode. It consists of a circuit and T ₂
In order to turn on the power supply for a time t _{X which} is relatively shorter than the repetition cycle each time, a program that sets T ₂ and t _X to the counter timer built into the MPU and starts it, and the value of the counter timer are read, It is controlled by a program that turns on / off the power supply when t _X and T ₂ , and by a program that turns on the power supply by an interrupt by voice input or switch input. ing. Further, only the MPU 5 and the TCXO 1 have their power sources backed up, and only the timer counter and the clock therefor are always working. Furthermore, this part requires measures such as data saving of the MPU 5 for storing the state before the power supply is stopped, backup of the memory in the MPU 5 and the like, and an input circuit when voice input or switch input is made. Must always be running. It is preferable that these circuits that are constantly operated consume as little current as possible, and that even if the supply of power is stopped, a circuit that operates by the supply from the capacitor stored during the supply is preferable. Further, since the operating voltage is low at the voltage of the battery, it is preferable to use a power supply circuit of the DC-DC converter type for boosting the voltage to a required voltage.

"Transmitter program" A program for performing the above operations is shown in the flowchart of FIG.
This will be described below. (Open channel search) When the initial process is completed, the reception mode is set, and the frequency division number N _R of the VCO is output so that the reception frequency of channel 0 is obtained. At this time, RF
Since there is no output from the transmitter, the switch is automatically connected to the receiving side, and the received signal is A of the microprocessor.
/ D input terminal 55. If there is a signal, the frequency division number is increased, the next channel is received, and this is repeated until a channel with no signal is received. Then, if the previous channel is not searched for, the channel is returned to the 0 channel and this is repeated. At this time, the capture ratio of the PLL circuit may be widened in order to ensure the signal in the channel, and in this case, when a signal is generated in the adjacent channel, it may be received. Therefore, in order to avoid this, the frequency division number can be increased to preferably two or more. Then converted dividing number N _R of no signal channel, the dividing number N _X = N _R +856 to transmit at the same frequency as the reception frequency.
Then, the calculated transmission frequency division number N _X is stored and the process proceeds to the next program.

(Transmission) When an input signal is input, an interrupt signal is generated, a code indicating the input signal is prepared as data, and the stored transmission frequency division number N _X is output to the VCO. , VCO outputs to the carrier input of the transmission amplifier, and M
PU follows the bit sync signal and the frame sync signal,
The data signal is serially output to the output 52 of the MPU as an FSK signal to modulate the carrier wave of the transmission amplifier. If there is no input, no interrupt will be taken and 0 or a code for checking the radio wave (or a code already sent if an interrupt occurs first) is prepared as data,
The stored transmission frequency division number N _X is output to the VCO and
Is output to the carrier input of the transmission amplifier, and the MPU outputs the data signal following the bit synchronization signal and the frame synchronization signal.
It is serially output to the output 52 of the MPU to modulate the carrier wave of the transmission amplifier.

(Power saving) When the transmitter is turned on, the microprocessor is automatically reset as an initial process, the program is set to the address of the reset vector, and the initial value of the counter timer in the MPU is set. Then, start the counter timer. After a certain period of time, first, the reception mode is entered, the frequency that can be transmitted is searched, and when the transmission frequency is determined, the counter timer is set and started. Even if there is an input at this time, the interrupt will not be accepted. Next, when the transmission mode is entered and transmission is completed, the counter timer is read,
If the value exceeds the time t _X , the power supply is stopped, 0 is set in the data or a code for radio wave confirmation is set, and the time count is continued.
_If it does not exceed _X , it waits until it exceeds t _X , and when it exits the loop, "time count read-time T ₂
When the time count value reaches T ₂ , the power supply is stopped until a certain time T ₂
This is repeated by resetting the counter timer, turning on the power supply, and shifting to the next transmission mode. This is repeated from the backup power supply of the microprocessor, TCXO, to all power supplies other than the clock of the microprocessor. / Stop by program. When there is an input such as voice, an interrupt occurs and the value of the register used by the MPU until then is
After saving to another memory, exiting the loop and transmitting, the register value is restored and the process returns to the inside of the loop. In this case, the series of operation times can be estimated from the number of bits of the signal and the clock of the MPU in consideration of the case where there is an interrupt. Therefore, the time t _X should be uniquely determined in consideration of the accuracy of parts. You can Moreover, the time T _2, the a time t _X, the current consumption capacity and backup capacitors used for backup, can determine the time to operate safely.

"Receiver configuration" The configuration of the receiver is shown in FIG.
As shown in (b), the output audio amplifier 14 and the vibrator 15 are newly provided except the RF switch 6, the transmission amplifier 4, the input audio amplifier / filter 9, and the microphone 8 from the configuration of the transmitter. It is a thing.

[Receiver Program] (Determination of Reception Frequency) Antenna 8, LC Filter 7, R
The signal is received via the C switch 6 and the receiving amplifier 11,
A frequency dividing number obtained by shifting the frequency to be received by the microprocessor 5 by an intermediate frequency is output to the programmable frequency dividing circuit 31, the frequency is input from the VCO 3 to the mixer 12, and mixed with the received signal to obtain the intermediate frequency. The signal is taken out, selected and amplified by the IF amplifier 13, the output is input to the A / D input terminal 55 of the microprocessor 5, the received FSK signal is demodulated and digitized, and if there is no bit synchronization signal, frequency division is performed. The number is changed to the next channel and this is repeated until all channels are received, and the frequency dividing number N of the reception frequency is determined. At this time, if there is no signal even if all channels are received, read the counter R1,
If it does not exceed T, the program returns to the program for determining the reception frequency again, and if it exceeds T, the mode output indicating that the user is in the power dead zone is performed. Therefore, until the user resets, the display of the power dead zone is continued, and if reset, it returns to the place where the initial setting is performed. At this time, set so that t _R > t _X, and
Each period must be set so that complete reception can be performed once within a certain period T (T> T ₁ and T> T ₂ ).

(Reception) Once the reception frequency is determined,
Next, enter the reception mode, if the bit sync signal is input, read the next frame sync signal, and if the user code matches, read the following data, and if the user code does not match, The counter R1 is read, and even in this case, the counter R1 is checked. If T is not exceeded, the process returns to the pregram that determines the reception frequency. If T is exceeded, it means that the user is in the power dead zone. Output in the indicated mode. Since the type of the transmitter and the like are encoded in the data, when it is not possible to make a determination only by vibration, it is possible to make a determination by reading the LED on the display.

(Power Saving) Similar to the transmitter program, the backup power supply of the MPU, the counter timer R2 for supplying / stopping all power supplies other than the clock of the microprocessor from the TCXO, and the radio dead zone Is a timer counter R1 for counting the time T for waiting for the transmission of. However, timer counter R1
Program enables interrupts when time T is exceeded, and if time T is not exceeded,
You can choose not to be interrupted. Also,
When jumping from the program for determining the reception frequency in the initial stage, the processing is the same when the time T is exceeded, but when the time T is not exceeded, the original program is returned to. Further, the count number t ₁ of the timer counter R1 is again compared with T, and if T or less, it is possible to return. When the receiver is switched on, the microprocessor is automatically reset as an initial process, the program is set to the address of the reset vector, and the counter timers R1 and R2 are initialized to t ₁ ,
At the same time as setting t ₂ , each counter timer is started. Then, enter receive mode program, determines the receiving frequency, reads the counter timer R2, waits until the time t _R, exceeds the time t _R, stops the power supply, continues the time count and, - it enters a loop of "read the counter timer R2 time comparison between T _1", to keep the power supply stopped until a predetermined time T _1. When the counter timer R2 exceeds T ₁ , the counter timer R2 is reset and activated, and the power supply is turned on to enter the next reception mode.

(Use) An operation test was conducted using the apparatus prepared as described above. In FIG. 5A, when the receiver 1 is used as the transmitter 1, the performance is such that the reach of radio waves is about 100 to 300 m, and when the radio dead zone is entered, the frequency and the display enter the dead zone. It changed to a signal indicating that. As shown in FIG. 5 (b), the number of receivers having the same user code is set to 1 for a plurality of transmitters, and as a result of transmission from each transmitter, reception having other user codes is performed. Machine did not receive. As shown in FIG. 5 (c),
As a result of using a plurality of transmitters each having a different user code and a plurality of receivers sharing one user code, it was possible to receive only from a receiver having the same user code as the receiver.

[0044]

As described above, according to the present invention, it is possible to provide a device having the following effects and having excellent reliability of information transmission. (1) When there is no signal from the transmitter, it can be confirmed that there is no signal, and the receiver can move to a place where the signal can reach without depending on other devices or others. (2) Door chime, telephone / fax by in-house visitors
It is possible to provide a dedicated transmitter for each of various sounds, such as the reception sound of, the crying of infants, the response to the kitchen timer, the alarm of the water boiling, and the avoidance of danger by various alarms. Can distinguish between transmitters. (3) Outside the home, it can be carried by batteries, can respond to knocking sounds at hotels, etc., and can be used for calling at banks, post offices, hospitals, government offices, etc. And by passing the transmitter, you can run a smooth social life. (4) By using a synthesizer method for the transmitter and receiver, part of the hardware can be shared,
Costs can also be reduced by changing only the program.

[Brief description of drawings]

FIG. 1A is a block diagram showing a transmitter according to an embodiment of the present invention, and FIG. 1B is a block diagram showing a receiver.

FIG. 2 is a diagram showing a format of data used in an embodiment of the present invention.

FIG. 3 is a flowchart illustrating a program of a transmitter according to an exemplary embodiment of the present invention.

FIG. 4 is a flowchart for explaining a program of the receiver according to the embodiment of the present invention.

5 (a) to 5 (c) are schematic views for explaining a method of using an embodiment of the present invention.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Utsui 4-37-17 Hongo, Bunkyo-ku, Tokyo Stock company Neuron (72) Inventor Yuuo Akitake 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Stock company Hitachi Media Media Research Laboratories

Claims (19)

[Claims] 1. A transmitter for transmitting a carrier wave at all times, having an input terminal, and transmitting a constant coded signal when an input signal is detected, and a transmitter for receiving the transmitted signal,
A receiver that outputs a certain mode as an output corresponding to the code, and outputs a mode different from the mode when the carrier wave or the encoded signal cannot be received. Information transmission device for the hearing impaired. 2. A transmitter that always transmits a carrier wave, is provided with an input terminal, and transmits a constant encoded signal when an input signal is detected, and a transmitter that receives the transmitted signal.
A receiver that outputs a constant mode as an output corresponding to the code, supplies its power source for each constant time T _{1 for a} time t _R relatively shorter than the repetition period, and An information transmission device for a hearing-impaired person, characterized in that when the carrier wave or the encoded signal cannot be received, a mode other than the mode is output. 3. A carrier wave is always transmitted at a fixed time T _{2 for a} time t _{X which} is relatively shorter than its repetition period, and an input terminal is provided, and a fixed coded signal is sent when an input signal is detected. A transmitter and a receiver that receives the transmitted signal and outputs a certain mode as an output corresponding to the code, and when the carrier wave or the encoded signal cannot be received, the mode An information transmission device for a hearing-impaired person, characterized in that it outputs a mode different from the above. 4. A constant coded signal is always transmitted at a constant time T _{2 for a} time t _{X which} is relatively shorter than its repetition period, and an input terminal is provided, and a constant coded signal is detected when an input signal is detected. A transmitter that transmits the signal, and a receiver that receives the transmitted signal and outputs a signal in a certain mode as an output corresponding to the code, depending on the predetermined coded signal or the input signal. An information transmission device for a hearing-impaired person, characterized in that when a coded signal cannot be received, a mode other than the mode is output. 5. A carrier is always transmitted at a constant time T ₂ for a time t _{X which} is relatively shorter than its repetition period, and
A transmitter having an input terminal, which transmits a certain encoded signal when an input signal is detected, and a receiver which receives the transmitted signal and outputs a certain mode as an output corresponding to the code. When the power source is supplied for each constant time T _{1 for a} time t _{R which} is relatively shorter than the repetition period and the carrier wave or the encoded signal cannot be received within the constant time T, An information transmission device for a hearing-impaired person, which outputs a mode different from the code. 6. A constant coded signal is always transmitted at a constant time T ₂ for a time t _{X which} is relatively shorter than the repetition period, and a constant code is provided when an input terminal is detected. A transmitter for transmitting a converted signal and a receiver for receiving the transmitted signal and outputting a certain mode as an output corresponding to the code, the power source of which is fixed every T ₁ When the signal is supplied for a time t _{R which} is relatively shorter than the repetition period and the predetermined coded signal or the coded signal by the input signal cannot be received within the fixed time T, a mode different from the above code is used. A device for transmitting information for a hearing-impaired person, characterized in that 7. The transmitter according to claim 1, wherein each of the plurality of transmitters has a unique code, and the code is inserted in the same field as a signal transmitted when an input signal is detected. The information transmission device for the hearing impaired person according to any one of the above. 8. The receiver is provided with a means for analyzing a code peculiar to the transmitter, and the output mode is changed according to the result of the analysis means. Information transmission device for people with hearing loss. 9. The transmitter according to claim 1, wherein the transmitter always receives a frequency to be used before the transmitter transmits, and after confirming that the frequency is not used, the transmitter transmits. 8. The information transmission device for the hearing impaired according to any one of 8. 10. A code for distinguishing one or more transmitters and one or more receivers from one group is used, and the code is inserted in the same field as a signal transmitted when an input is detected. The information transmission device for a hearing-impaired person according to any one of claims 1 to 9, characterized in that 11. The information transmission device for a hearing-impaired person according to claim 1, wherein a switch is provided at the input terminal, and an input signal is generated by turning on / off the switch. 12. The information transmission device for a hearing-impaired person according to claim 1, wherein a voice sensor such as a microphone is provided at the input terminal and an input signal is generated by inputting voice. 13. The deafness according to claim 12, further comprising a filter for cutting noise from a voice signal, a signal in a band other than a required voice, or a clipper circuit for cutting an excessive input signal. Person information transmission device. 14. The receiver is output by vibration, and the output mode is changed by changing the intensity of the vibration, the frequency, the frequency of the vibration, or a combination thereof. 13. The information transmission device for the hearing impaired according to any one of 13. 15. The output of the receiver is an AC voltage generated between two conductive terminals in contact with the skin, the AC voltage being generated between the two terminals, and the strength of the AC voltage, the number of signals, the frequency, or a combination thereof. The information transmission device for a hearing-impaired person according to any one of claims 1 to 13, wherein the output mode is changed by changing, for example. 16. The receiver according to claim 1, wherein the output of the receiver is accompanied by a display means for discriminating the type of the transmitter or the type of the input signal. Information transmission device for the hearing impaired. 17. A microprocessor for at least one of a transmission frequency of a transmitter, an input signal encoding, a power supply, a group discrimination code, a transmission timing, a modulation timing, a serial output for modulation, and the like. The information transmission device for a hearing-impaired person according to any one of claims 1 to 16, characterized in that the information transmission device is controlled by a program for using the same. 18. A reception frequency of a receiver, analysis of a reception signal,
Power supply, group code discrimination, reception timing,
At least one of modulation timing, change of output mode, etc. is controlled by a microprocessor and a program for using the microprocessor, and the information transmission for the hearing impaired person according to any one of claims 1 to 17. apparatus. 19. The information transmission device for a hearing-impaired person according to claim 17, wherein a synthesizer system is used to control at least the transmission frequency of the transmitter or the reception frequency of the receiver.