JPS6021663A - Communication system - Google Patents

Abstract

PURPOSE:To improve the reliability by generating a start signal through the operation of a press-to-talk switch for attaining transmission state and releasing the operation of press-to-talk switch for attaining reception state, to prevent the generation of sound at the initial state of operation. CONSTITUTION:Transceivers 1, 2 are connected by a line 7 and in depressing the press-to-talk switch of a transmitter 3, an infrared-ray being the start signal is irradiated to attain the transmission state and the infrared-ray is modulated by a voice signal from a microphone and the result is transmitted. A receiver 4 receives the infrared-ray, the start signal activates a relay, the demodulated voice signal is transmitted to a receiver 6 of the transceiver 2 via a line 7 and converted into sound by the receiver 6. Further, the signal converted into sound is transmitted to the other device via a transmitter 5. The infrared-ray being an end signal is irradiated through the operation stop of the press-to-talk switch. The receiver 4 receives it, the relay is changed over so as to attain reception state and the voice signal from the receiver 6 is converted into sound by a speaker.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a jJu LH'jj system which is equipped with at least a pair of transmitting/receiving devices, such as an intercom, so that seven can be obtained by transmitting and receiving an analysis double.

BACKGROUND ART In such a communication system, at least seven transmitting/receiving devices installed in a room are each equipped with a transmitter that generates an audio signal, and from this transmitter; A receiver installed at a location sends a message, and the sound P signal from the transmitter is directly transmitted to another transmitter/receiver 4M that is electrically connected to the receiver through the receiver IN. Convert the audio into audio, l
Other transmissions: The audio signal from the device is converted into audio signal at the receiver. In the transmitter A machine, the T! During the transmission, the Breastoke inch provided for the transmission remains in operation.

In the prior art, by speaking while pressing the breath talk switch provided on the transmitter, the voice signal is transmitted to the Uke 1 Diary machine via the Atu line, and the voice 1D 17J is in the process of transmitting the signal, detects the demodulated sound J-11-i, and transmits the demodulated sound J-11-i to the transmitting/receiving device of 1111-Ki-ike. ,
＋It's confusing. In such a prior art, in order to be able to transmit the first 111 minutes of the song to the 11iL transmission/reception device 1) 1,
It is necessary to make the detection of politics → No. 4 in the father's signal machine + S continuous length. If this is done, the problem arises that malfunctions are likely to occur due to noise.

In the prior art, 3 or more transfers ・) 2:
It1 device [If 1t is stagnant and you want to perform a specific transmitting/receiving device 1q, select the sending location (..., the transmitting/receiving device in the forest; It will probably be necessary to provide a push button for the first time.
'4 different frequencies must be used for each station, 14 sentences (14 pages) JJ Shishi 1, 1 Iku to Chichi Kiyoshi, 1
When the groove 1 is cut so that the frequency control signal is L><Iij in the cultivation Q, it is necessary to transmit the full sound for 1d seconds.
, 161 shows the center 1 ``11 waves 1 father f with a deviation ±ΔJ j ``tJ wave attack ・suspension ・'' or ~ V force (required. Therefore, Zhou fatigue attack or, 11. ", 1st & 31st, to distinguish between the 1d voice and the selected iW requires a ratio of 1 (V's 1be + rr1tf attack band. Therefore, the 11 shaku IF report is famous. It becomes necessary to keep a close eye on the transmission signal (relatively soft 1m).However, if you do this, the circuit elements in the transmitter 111, the circuit wires of the receiver, for example, the infrared , the light-emitting diode and light-receiving terminal of the cane must be expressed at such a frequency), and in this way, one item per day
It is difficult to do j'j with Alfl'' hand!, and it is not favorable from the four points of ・'(, and the low scolding 1dli made]f).

As for other advanced techniques, note that when the transmitter 4tJ Ic (iii) is activated, a tatami transmission wave of 1.16 k) is generated, and the receiver 1, 1
Nadetri provisional transmission 75 When there are two, is it sent from Jlyi? # fE34+14 to Ii (send/Sony 11-
When there is no zelkova transmission, the acoustic signal from the above-mentioned No. Even with this prior art, there is no way to do this unless the carrier wave is detected at a controlled speed so that the first part of the audio signal can be converted into a 1111 signal. If it is ML noise as mentioned in HIJ) soil? Q goes down by 1. Matata Is
, l*g receives light from a fluorescent lamp (f(L/), and this causes a wave to be sent from (Ft) to (the shell) (even though it has not been sent). Motion 1' ``I was about to open the store.

In other words, the advance is 1, and the technique is 1. :j The singing quality was poor.

tgi's iE4 fl;I & +15 wings (gender is same as above and improved to 1/ζ's IJ1 candy method).

! Figure 153 shows the misfire 1] - 夷hj5. FIG. 2 is an example system diagram.

A general transmitting/receiving device (for example, 2 in this embodiment) 1.2 is selected as 1M'h. At least one sending/receiving (g
In the device portrait, there is a sending machine 3 that emits the ↑r voice signal using infrared green light, etc., and its +41. By the voice signal from Go 1 3, the father Ibaratsuki 4 who receives 1d is directed 6, and the other conception device 2 also transmits (i 4 machine 5 and The receiver H machine 6 is set up.

Father's fortunes 4 and 6 are greasy by line 7.

The 4th r
This is a Glock 1st 1 showing f configuration. The feeding rock 3 is equipped with a breath talk switch 9 which is operated when requested by a microphone 8. This breath talk switch 9
A resistor 10 is provided in connection with
N A N D gate 1 :3 via l 1 , 12
, given to one of the 14 human forces. Reversing side 1diy
The output of 12 is deaf and is given to the time constant i1'r't 16 from the inversion plane 11δ15.

During this time constant, the output from fl' 316 is given to the other input of the NAND gate 13. The time constant circuit 16 is
It includes a resistor R1 and an integrating capacitor C1.

The output from N'AND gate 13 is NAND gate 1
4 to the other input. N A N D gate 1
Tagata from 3.14 is applied to processing 1ali Raku 19 via inverting circuits 17 and 18, respectively.

Output 1'1 from NAND gate 11 NAND gate 2
0 to one input. The output from this inverting circuit 11 is 1, which is inverted to the 11th order by the inverting circuit 21, and is applied to the input of the NAND gate 20 via the time constant circuit 22. N A , N D gate 20 is 11t1
γLR2 and an integrating main IN capacitor C2-. N
The output from the AND gate 20 is the inverted circuit iI('+23
r squares are applied to the processing circuit 19.

The Jingetsu 1 circuit 19 responds to the outputs from the Warp/Mu circuits 17, 18, and 23, and transmits the carrier wave by opening rt ('t E and ending 1d) by operating the breast switch 9, which will be described later. The light-emitting element 25 that emits infrared light by the driving circuit 24 is connected to the light-emitting element 25, which emits infrared light by the driving circuit 24, which immediately modulates the J6 wave by the sound 4 from the microphone 8 which is outputted from the pulse code.
HiilJ.

FIG. 5 is a block diagram of the receiver fs 4tG 4. Receiving () length 3 -5 (j The infrared light from the optical sensor 25 is received by the light receiving element 26e, and the amplification circuit +1t'+27
is amplified by The code discrimination circuit 28 identifies the start number and the end signal, and sets the flip-flop 29 when it detects the open (jl, A''-J), and resets the entire clip 70 block 29 when it detects the end number. Set output Q6-1 of flip-flop 29 makes transistor 30 conductive, thereby energizing relay coil 32 of relay 31. Relay switch 3 of relay 31
3 is detected by a processing circuit 34 including a microcomputer V-'' user, etc. This processing circuit 34 is connected to the transmitter/receiver 1d device 2 of the pond via a line 7, and is also connected to the above-mentioned other A speaker 35 that converts the audio signal from the transmitting/receiving device 2 into sound is connected.

Figure A6 (1) shows the switching Ia of the Breathtalk switch 9. At time t1, when the contact switch 9 is operated to conduct, the noise is 1g times (
! The output of r11 becomes a low level as shown in FIG. 6(2), and the output of the inverting circuit 12 becomes a high level as shown in FIG. 6(3). The output of the inverting circuit 15 is similar to the waveform of the 6th section ((2), and this output releases the content -C1 of the current control circuit 16. The output of the capacitor C1 is the 61st waveform. /(4), and when the voltage reaches the JIJ level 11 of the NAND gate 13, the NAND gate 13 has the waveform shown in FIG. 6(5). Derive. In this way, the processing circuit 19 is connected to the breath talk switch 9 for the purpose of transmitting].
You will be given the faith to fight. The output of NAND (NAND) 14 is shown in Figure 6 (8), from time t1 to 114f.
Il'iJ 'rl &r= NAND after time t2) Output from 14 becomes low level, and at this time, microphone 8
A harmonic wave is emitted from the light-emitting cable 25 due to the d old/E chord.

[Processing circuit] 9 is the 1F from the NAND gate 13 through the inverting circuit 17, (1) U start 1d'/J- is emitted from the light-emitting wire 25. Sa4jru. This IJ? The light is received by the light receiving system 26 in the receiver 4 shown in FIG.
Set. Therefore, four transistors 30 are passed through, and the relay coil 32 is +T) JJ (+&, and the switching of the relay switch 33) b becomes poor. Processing circuit 3
4 modulates the toned audio 1l-pl+1 received after time t2 by 1v, and sends it from line 7 to the receiver 6 of another transmitting/receiving device &2. In this way, it will be sent and the old work-like table will be formed.

t at 11y time t3 when the first 1st period of sending was completed in sending IH Tsuki 3.
Well, I've seen all of Breathtalk Switch 9's terrifying works.11)
i do

From time t3 onwards 111, the output 1 of the time constant circuit 22 (
j, as shown in FIG.
I'm thinking of 1. After time t3, the reversal time i1+
The output of 'i 21 becomes a low level, and thereby the output of 1Ffl 22 decreases by 1 degree for a time constant number of times. time*l
In J t 4, the output of 22 times the number of times when the discrimination level is 12 and 71. When it becomes a mountain, the output of the N A N D gate 20 becomes 1 as shown in Figure (7).
This 1.-1 number is inverted by the inverting circuit 23 and processed 14 times i+'.
+: Given by +19&. Processing surface +1419 #-,
i lie; :i'' j A pulse code modulated end 1 period lasting 2 is transmitted from the luminous cord 25. 9 +, -4riλ4 code l#J '1jlJ
The circuit 1628 determines this termination signal and resets the flip-flop 29 (i-).This circuit 71K shuts off the transistor 30 and demagnetizes the relay coil 32.The relay switch 33 returns to its original state, and this As a result, the processing circuit 341 becomes the receiving operation state h in which the speaker 35 can convert the old voice Igo signal transmitted from the other transmitting/receiving IH diaphragm 2 into an old parable. The working state of story 1111J is the period from time t2 to time t3, as shown in FIG. 6(8).

1 of Mizumoto 131 (as the IL implementation flj, the transmitting and receiving Ig face is provided with 3 or more n1 valley transmitter 1d device u'i and the receiver is taken by the line) l'tos9 But that's fine.

Still according to the invention at least one transmitter/receiver taii;
7.1 N'doke is the onset of disease 1, 3, and 1 and 4 are kan 1
The remaining transmitter/receiver 1d device 112 may be integrated with the transmitter 5 and the transmitter 6 into one unit.

L+'i=In order to improve the response, it is sufficient to shorten the 1JfJ signal and the end %51°.

Tree! As an example of Kenyj's rule, a transmitter/receiver 4rR device is
The above-mentioned transmitting and receiving equipment will be installed at Bond Transfer Exhibition 3.
Non 41 It is also possible to provide a push button for inputting only 1d to be sent and configure it so that transmission and reception 1d is performed only with a specific transmitting/receiving device. It is.

According to the present invention, as shown in FIG. By doing so, Dokinosuke would be in poor condition, so it would not be necessary to have an infinitely wide frequency band for the transmitter and receiver 1α practice, and therefore the 1.1゛6 configuration would be left in the dark. (Receiving performance status) It is an island. Sending/receiving 1d
This prevents the sound from being generated in the device at least at the initial stage of operation of the breath talk switch. In this way IA q=gender is determined.

[Brief explanation of drawings]

Fig. 1 is a frequency spectrum diagram showing the frequency band W required for transmitting the old voice signal in the frequency modulation method, Fig. 2 is a waveform diagram of the prior art pulse code f Jril selected No. 1-, J%3 diagram is an overall system diagram of an embodiment of the present invention, FIG. 4 is a block diagram of the transmitter 3, and FIG. 5 is a diagram of the receiver $P,
4, r3) FIG. 5 is a waveform diagram for explaining the operation of the embodiment shown in FIGS. 153 to 5. 1, 2...Sending/receiving device combination [, 3, 5...
・Transmission 4i electric, 4, 6... Receiving voice, bottle, 7... Line, 9... Breath talk switch, 11, 12, 15,
17, 18, 21, 23...inversion circuit, 16, '
22...Time constant wave circuit, 13,14.20...NAND
Gate, 19. 34... Processing circuit, 24... 1V cutting circuit, 25... Original light element, 26... Light receiving element, 27
...Amplification circuit, 28..Code discrimination circuit, 29..Flip 70 tube, 31..Relay, 35..Speaker agent, patent attorney, Keibu Shimai

Claims (1)

[Scope of Claims] At least one pair of sender and uncle equipment is displayed, and at least one of the six transmitting/receiving devices includes a transmitter (if1) that generates a voice signal and a receiver that receives a voice signal from the transmitter. Then, the sending operation of transmitting the goods to another sender 1d device via the switching means, and the sending and receiving of ufJ etc. (,4
1. A father who performs a receiving operation of converting the audio signal from the device i into a voice signal through the switching means. The above-mentioned transmission (G4FI is the first time the breath torque switch and the breath torque switch are operated,
1] 1] Almost (Using the S number, when the operation of the breath talk switch is completed n winter, the root of A winter ending fin-'!' is used, including 'r6 raw means and τ, 1417 i7 receive ft4, +x'i is sent 1j1ii *t!J in response to start 1d by means of
'r'l' death, and in response to the completion of the 9th
tkli 11ν) A communication method characterized by using a letter title.