EP0203394A2
Expired / Lapsed
EP
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Electronic music/voice ringer circuit for telephone
Assignee: BEIJING EVER BRIGHT INDUSTRIAL Co
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Filing: 1986-04-28
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Granted: —
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Expires: 2006-04-28
Abstract
Abstract An electronic music/voice ringer circuit for use in telephone sets. It can be used in telephone lines of any system and incorporated in telephone sets of any type. It consists mainly of a transistor acting as an amplifier, and an integrated music/ voice signal generator which can be connected directly to ringing pulse line to convert a series of intermittent ringing pulses into continuous sweet music calling signals or voice calling signals.
Inventors
- 👤 Zhongdu Liu
- 👤 Zhonxian Liu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 10:49
CPC Classifications
H; H04; H04M; H04M19/00; H04M19/02; H04M19/04; A; A61; A61K; A61K31/00; A61K31/66
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
125 words
An electronic music ringer circuit for use in telephone lines of any system and telephone subscriber's sets of any type being characterized by comprising a power supply circuit (2) connected to telephone lines; a master trigger circuit means (1) connected to telephone lines for converting a ringing pulse into a jumping pulse; a music signal generating means (8) with a ROM in which a music program is prestored; a music signal amplifying means (5) composed of a transistor; a first trigger circuit means (4) starting the music program stored in said music signal generating means; a second trigger circuit means (3) turning on said music signal amplifying means; a trilling circuit (6); a tone control means (7) and a music calling signal output means (9).
Claim 2
Dependent Claim
125 words
An electronic music ringer circuit for use in telephone lines of any system and telephone subscriber's sets of any type being characterized by comprising a power supply circuit (2) connected to telephone lines; a master trigger circuit means (1) connected to telephone lines for converting a ringing pulse into a jumping pulse; a music signal generating means (8) with a ROM in which a music program is prestored; a music signal amplifying means (5) composed of a transistor; a first trigger circuit means (4) starting the music program stored in said music signal generating means; a second trigger circuit means (3) turning on said music signal amplifying means; a trilling circuit (6); a tone control means (7) and a music calling signal output means (9).
Claim 3
Dependent Claim
112 words
An electronic voice ringer circuit for use aitelephone lines of any system and telephone subscriber's sets of any type being cheracterized by comprising a power supply circuit (2) connected to telephone lines; a master trigger circuit means (1) connected directly to telephone lines for converting a ringing pulse into a jumping pulse; a voice synthesising means pre-storing a voice program; a voice signal amplifying means (5) composed of a transistor; a first trigger means (4) for starting the voice program stored in said voice symthesising means; a second trigger means (3) for turning on said voice signal amplifying means; a tone control means (7) and a voice calling signal output mean (9).
Claim 4
Dependent Claim
112 words
An electronic voice ringer circuit for use aitelephone lines of any system and telephone subscriber's sets of any type being cheracterized by comprising a power supply circuit (2) connected to telephone lines; a master trigger circuit means (1) connected directly to telephone lines for converting a ringing pulse into a jumping pulse; a voice synthesising means pre-storing a voice program; a voice signal amplifying means (5) composed of a transistor; a first trigger means (4) for starting the voice program stored in said voice symthesising means; a second trigger means (3) for turning on said voice signal amplifying means; a tone control means (7) and a voice calling signal output mean (9).
Claim 5
Dependent Claim
66 words
An electronic music ringer circuit according to claim 1 being characterized in that the a.c. input of said power supply circuit (2) is connected to the telephone line via resistor-capacitor network consisted of R o and C 2 in series, and a Zener diode ZD 1 and a capucitor C 3 for storing energy and filtering are connected across the D.C outputs of the rectifier bridge
Claim 6
Dependent Claim
47 words
An electronic music ringer circuit according to claim 1 Characterized in that said master trigger circuit means (1) consists of capacitor C 1 , diode D 5 , D 6 which form a rectifier doubler connected in series with a neon lamp which can generate flashing signals.
Claim 7
Dependent Claim
97 words
An electronic music ringer circuit according to claim 1 being characterized in that said second trigger circuit means (3) consists of resistor R 2 , R 3 , capacitor C 4 and diode D 7 , the conjunction of R 1 and R 2 is the input of said second trigger circuit and is connected with the output of neon lamp; R 2 and R 7 are connected in series with R 3 from which the trigger signal is output, and C 4 is connected between the conjunction of R 2 and D 7 and common earth.
Claim 8
Dependent Claim
58 words
An electronic music ringer circuit according to claim 1 being characterized in that said first trigger circuit means consists of a voltage divider composed of resistors R 1 and R 4 , a zener diode ZD 2 and a copacitor C a connected in perallel with resistor R 4 ; trigger signal is output from C 8 .
Claim 9
Dependent Claim
92 words
An electronic music ringer circuit according to claim 1 being characterized in that said music signal amplifying means consists of a single transistor and acts concurrently as an electronic switch and a constant current source, which is an audio frequency amplifier operable to produce trill effects in cooperation with said trilling circuit (6); the base of said transistor is connected with the output of said second trigger circuit means; the emitter of which is connected to said trilling circuit; the collector of which outputs amplified music signals to said output circuit (9).
Claim 10
Dependent Claim
70 words
An electronic music ringer circuit according to claim 1 being characterized in that said music signal generating means consists of a CMOS integrated circuit prestoring a music program, the triggerring terminal of which is connected to the output of said first trigger circuit means, the clock signal input of which is connected to said tone control circuit composed of resistors R6, R 7 , RS and switch K 2 .
Claim 11
Dependent Claim
65 words
An electronic music ringer circuit according to claim 1 being characterized in that said trilling circuit is composed of a variable resistor R 9 and a capacitor C 5 connected in parallel with each other, one terminal of which is connected to the emitter of transistor T , the other terminal of which is connected to the supply terminal of said music signal generating means.
Claim 12
Dependent Claim
70 words
An electronic music ringer circuit according to claim 1,7,9 being characterized in that the emitter of transistor T acting as a constant current source is connected to supply terminal of said music signal generating means IC2, a Zener diode ZD 3 performing clamping and regulating is connected between said supply terminal and common earth, an audio by-pass capacitor C 6 is connected between collector of transistor T and common earth.
Claim 13
Dependent Claim
34 words
An electronic music ringer circuit according to claim 1, being characterized in that a normally-closed switch J 2 is connected to a positive supply terminal C and synchronizes with off-hook to stop music call.
Claim 14
Dependent Claim
39 words
An electronic music ringer circuit according to claim 1, being characterized in that a normally-open switch J 1 is provided which is connected in paralled with supply terminal of IC 2 and synchronizes with off-hook to stop masic call.
Claim 15
Dependent Claim
64 words
An electronic voice rigner circuit according to claim 2, being characterized in that the a.c. input of said power supply circuit (2) is connected to the telephone line via resistor-capacitor network consisted of R o and C 2 in series; a Zener diode ZD 1 and a capacitor C 3 for storing energy and filtering are connected across the D.C. outputs of rectifier bridge.
Claim 16
Dependent Claim
48 words
An electronic voice ringer circuit according to claim 2 being characterized in that said master trigger circuit means (1) consists of capacitor C 1 , diode D 5 , D 6 which form a rectifier doubler connected in series with a neon lamp which can generate tlashing signals.
Claim 17
Dependent Claim
92 words
An electronic voice ringer circuit according to claim 2 being characterized in that said second trigger circuit mean (3) consists of resistor R 2 , R 3 , capacitor C 4 , the conjunction of R 1 and R 2 is the input of said second trigger circuit and is connected with the output of neon lamp, R 2 and D 7 is in series with R 3 from which the trigger signal is output, and C 4 is connected between conjunction of R 2 and D 7 and the common earth.
Claim 18
Dependent Claim
58 words
An electronic voice ringer circuit according to claim 2 being characterized in that said first trigger circuit means consists of a voltage divider composed of resistor R 1 and R 4 , a Zener diode ZD 2 and a capacitor C 8 connected in parallel with resistor R 4 ; trigger signal is output from C 8 .
Claim 19
Dependent Claim
84 words
An electronic voice ringer circuit according to claim 2 being characterized in that said voice amplifying means consists of a single transistor and acts concurrently as an electronic switch and a constant current source, which is a audio frequency amplifier, the base of said transistor is connected to the output of said second trigger circuit means the emitter of which is connected direcfly to supply terminal of said voice synthesis means; the collector of which outputs amplified voice signals to said output circuit (9).
Claim 20
Dependent Claim
71 words
An electronic voice ringer circuit according to claim 1 being characterized in that said voice synthesis means (8) consists of a integiated circuit which can simulates speech sounds, the triggerring terminal of which is connected to the output of said first trigger circuit means; the clock signal input of which is connected to said tone control means (7) composed of resistor R 6 , R 7 and switch K 2 .
Claim 21
Dependent Claim
66 words
An electronic voice rigner circuit according to claim 2 ,17,characterized in that the emitter of transistor T acting as a constant source is connected to supply terminal of said voice synthesis means, a Zener diode ZD 3 performing clamper and regulating is connected between said supply terminal and common earth; an audio by-pass capacitor C 6 is connected between collector of transistor T and common earth.
Claim 22
Dependent Claim
36 words
An electronic voice ringer circuit according to claim 2, being characterized in that a normally-closed switch J 2 is provided which is connected to positive supply terminal C and synchronizes with off-hook to stop music call.
Claim 23
Dependent Claim
39 words
An electronic voice ringer circuit according to claim 2, being characterized in that a normally-open switch J 1 is provided which is connected in parallel with supply terminal of IC 2 and synchronizes with off-hook to stop music call.
References Cited (Backward Citations)
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