JPS60167548A - Sound synthesizer of morse code and the like - Google Patents

Abstract

PURPOSE:To attain the sound synthesization of Morse codes, etc. through optional selection with a simple circuit constitution, by providing a counter which counts oscillation signals and produces an output from each output terminal in response to the signal count value and a control circuit for D/A conversion constituted by connecting selectively plural output terminals of said counter. CONSTITUTION:The oscillation signals sent from an astable multivibrator consisting of an IC5, and IC6, etc. are counted by an IC7. The count outputs q0-q8 which produce outputs when the IC7 shows count values 0, 1, 2, 4, 6, 7, 8 respectively are connected via each diode. Therefore a mark having triple length is formed by 0-2 while the count value increases up to 9 from 0. Then a space of one-fold length, a mark of one-fold length, a space of one-fold length and a mark of triple length are formed by 3, 4, 5 and 6-8 respectively. In other words, the Morse codes are produced as shown in a dash/dot form.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speech synthesis device for Morse code, etc., which can obtain a desired Morse code using a simple logic circuit.

Although there are various conventional devices that automatically create Morse code, all of them have complicated configurations, and it is difficult to freely replace the Morse code with a desired one.

SUMMARY OF THE INVENTION An object of the present invention is to provide a device which can perform voice synthesis using Morse code or the like by arbitrarily selecting one with an extremely simple circuit configuration.

An embodiment of the present invention will be described below.

FIG. 1 is a circuit diagram showing an automatic telephone answering device incorporating a voice synthesis device such as Morse code according to an embodiment of the present invention.

In the figure, R and T are telephone office line terminals, LT is a line transformer, IC1 to IC9 are integrated circuits, Q1 to Q10 are transistors, LED is a light emitting diode, C is a capacitor, R is a resistor, and up to 5W1a-b are It is a three-circuit interlocking selector switch, with AT being the auto position and M being the manual position.

D is a diode, NL-1 is neon, and CDS is a photo-receiving element of a photocoupler paired with the neon NL-1. Further, Y-1 is a relay, J-1 and J-2 are jacks, and BAT is a representative power supply.

IC5 and IC6 constitute an astable multivibrator that outputs an oscillation signal. IC7 is a counter that counts the oscillation signal output from IC6. For example, MC1.
4017, that is, a decimal counter using a Johnson code can be used with the counter of Motorola's (,-MO8IC). , for example, in this example to create "Two Tong Two" representing K, qo1q11q2, C4, C6, C
7. The output terminals of QIl are each coupled via a diode. The cathode sides of the diodes are coupled together and connected to the input terminal 15 of the IC8 via a resistor R15. IC8, IC9, C4, and C6 convert the Morse code input into IC8 into the corresponding r-to-ton code.
It constitutes an oscillation circuit that converts 2J into audible sound.

The astable multivibrator (consisting of IC5, IC6, etc.), the counter (consisting of EC7), a circuit that selectively couples the output terminals of the counter, and an oscillation circuit (IC8, IC9, C4, 06 etc.)
constitutes the Morse code generator.

Before explaining the operation of the Morse code generator, first, the overall operation of the automatic telephone answering device shown in FIG. 1 will be outlined.

Now, when a 16-cycle call signal (about 75V) is input from terminals R and T, the neon lamp NL=1 lights up, the light is received by the CDS, and it is amplified by IC3 and IC4 and sent through transistor 02. relay y-i works. Note that the fact that C2 and C3 are connected in series will be described later. When relay Y-1 operates, its contacts yL-1, yl-2, yl-3, and yl-4 are all made. When yl-1 becomes makeup, line transformer L
A telephone line connection circuit is constructed via the primary side PR of T and resistor R1. Next, when contact y1-2 becomes make, the IC
The output of C2 (H level) is applied to the base of C2 via resistor R2. Next, when yl-3 is set to make, the control terminal of the external recorder connected via jack J-2 is turned on, and the motor of the external recorder is driven. Next, when yl-4 becomes make, power supply 1B supplies power to a timer circuit and other circuits, which will be described later. Therefore, first, when the loop circuit is configured and closed, the Morse code generator transmits the preset Morse code to the other party via the telephone line.
The output of this Morse code is sent to the tertiary coil T of the line transformer connected to the collector side of transistor 04.
It will be sent to the primary side PR via H.

If the caller hears this and understands the meaning of the Morse code (in this example, the Morse code K is used, so it means something like "Please send me a message"), then , he or she will start talking to input his or her own business into the device. The message from the caller at that time enters the line transformer's primary side PR to the secondary side SEC, and is introduced from jack J-1 to the microphone terminal of the external recorder via a resistor. Since the external recorder is already in the operating state 4- by J-2 as described above, the caller's message will be recorded on the external recorder. At this time, the time from when the Morse code is output until the device recovers is regulated by a timer circuit centered around C5 shown in the figure. That is, a closing circuit is formed and yl-4 becomes the make, so that power is supplied to FETQ5, but from this point on, power is supplied to FETQ5, which is determined by a time constant consisting of C2, R3, and VR-1 that has been set in advance. The Q5 is turned on for the time,
After that time the 05 turns off. During this time, the other party's voice is recorded on an external recorder. In this way, when the timer runs out, the line from the source side of C5 is applied to the base of transistor 03 via resistor R4,
C3 is turned off, C2 is turned off, and relay Y-1 is released.

During this time, if the other party hangs up, the pulse generated at that time turns on 01, turns on the output of IC2, turns off C2, and releases relay y-1.

When relay Y-1 is then released, the closing circuit is released and the device is restored. In addition, Q7, Q has a circuit that emits a signal equivalent to a well-known beep tone every 7 seconds as a signal that the caller's message is being recorded.
It is composed of a multivibrator consisting of B. This output comes out from the collector of QB, IC8, IC
9, passes through the base of transistor Q6, and QG
is turned on, Q4 is turned on, and the above-mentioned tertiary coil Tl-1 is turned on.
Sends oscillation output to. This oscillation output is output once every 7 seconds for about 0.5 seconds depending on the time constants of C and R of the multivibrator consisting of Q7 and QB.

When the device is restored, the voltage drop of the resistor R5 on the source side of the FET is used to detect the voltage drop from about 4 to 10 seconds before restoration using the transistor 09, which is turned on and the voltage drop of the above-mentioned IC8, IC9, QG , Q4 is operated, and this signal output is sent to the primary side PR of the line transformer.

Note that if Morse code is output immediately when the device is closed after receiving an incoming call, it will take some time for the caller to bring the receiver to his or her ear, so the first signal, e.g. I'm worried about missing the two-tone sound. For this reason, when relay contacts y1-4 are turned on and power is supplied, capacitors 05 and R6 block the energization, and I(,
-7 operation is slightly delayed. There is a silent period of about 1.2 seconds after a call is received, and then Morse code is sent to the telephone line, and the other party knows that this is Morse code and responds to it.

Next, the operation of the Morse code generator will be explained.

Oscillation signals from an astable multivibrator composed of IC5, IC6, etc. are counted by IC7. IC
Count output QOsQlsQ2zQ4 that produces an output when the count value of 7 is 0, 1.2.4.6.7.8, respectively.
, QG, Q7, and QB are coupled through each diode, so while the count value increases from 0 to 9, it increases from 0 to 9.
2 forms a mark three times as long, and 3 forms a mark that is 1
A double-length space is formed, 4 forms a single-length mark 7-, 5 forms a single-length space, and 6 to 8 form a triple-length mark. That is, a Morse code of "two ton two" representing K is formed. (Figure 2 shows this Morse code.) This Morse code is IC8, IC9, QG,
The sound is input to an oscillation circuit consisting of Q4 and converted into an audible sound corresponding to this Morse code "Two Ton Two".
It is sent to the office line via the tertiary coil TH of the line transformer LT.

To obtain the Morse code, for example R (i.e., 1 ton to ton), output terminals Q2 to q4, q6 are coupled through respective diodes. The counting operation creates a "ton-to-ton" Morse code.

In this way, by selectively combining a plurality of counting outputs of the IC 7, it is possible to create a desired Morse code.

That is, if the above configuration is compared with a general speech synthesis circuit, IC5 and IC6 correspond to the time control means at the top of the general speech synthesis circuit, and IC7 corresponds to the language control ROM or language control means of the general speech synthesis circuit. The circuit consisting of IC8 and IC9 corresponds to a DAC, that is, a digital analog control circuit of a general speech synthesis circuit, and synthesizes and converts the digital signal generated from IC7 into an audible Morse code signal. Note that the address table ROM used in the general speech synthesis circuit is unnecessary in the present invention since only one type of signal is output.

Since the speech synthesis device for Morse code, etc. of the present invention is configured as described above, Morse code can be created with an extremely simple circuit, and the desired Morse code can be created by replacing one IC or several diodes. can be created. Also, compared to a general speech synthesis circuit, the time control circuit and oscillation circuit are implemented using IC5 and IC6, and the language control R
OM is performed by IC7, address table ROM is unnecessary, and digital-to-analog conversion control is performed by IC8 and IC.
9, it can function as a speech synthesis circuit even though it has an extremely simple configuration.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an automatic telephone answering device incorporating a voice synthesis device for Morse code, etc., according to an embodiment of the present invention, and FIG. 2 shows a Morse code created by the Morse code creation section of FIG. FIG. 3 is a diagram showing a Morse code according to another embodiment of the present invention. [T...Line transformer, ICI~IC9...Integrated circuit, Y-1...
...Relay, J-LJ-2...Jack. Patent Applicant Hashimoto Corporation Agent Patent Attorney Makoto Hayakawa 11- -Go Shiro- 0123456789 Procedures? ■Authentic (spontaneous) December 26, 1980 1. Indication of the case 3. Person making the amendment Relationship with the case Patent applicant address 2-28-2 Komazawa, Setagaya-ku, Tokyo Name Hashimoto Corporation Representative Hashimoto Japanese-English 4, Agent 105 Phone: 433-4702 Address: 4-24 Shinbashi, Minato-ku, Tokyo. -3 6. Contents of amendment (1) The claims column is corrected as shown in the attached sheet. (2) In the second line of page 7 of the specification, "about 7 seconds" is corrected to "about 10 seconds." 2. Claimed ``Oscillation L that outputs an oscillation signal''; having a plurality of output terminals corresponding to the counted value, counting the oscillation signal and producing an output from each of the output terminals corresponding to the counted value Counting circuit means; and a digital-to-analog conversion control circuit set that selectively combines a plurality of output terminals of the counting ratio so as to form a combination of marks and spaces corresponding to a desired Morse code. Speech synthesis device for Morse code, etc.

Claims (1)

[Scope of Claims] An oscillator that outputs an oscillation signal; and a counter that has a plurality of output terminals corresponding to a count value, counts the oscillation signal, and generates an output from each of the output terminals in accordance with the count value. A control circuit for digital-to-analog conversion that selectively combines a plurality of output terminals of the counter so as to form a combination of marks and spaces corresponding to a desired Morse code, and; Speech synthesizer.