FR2431803A1 - Programmed telephone message transmission system - has transformer coils respectively coupled to relay and microprocessor having memory at read input - Google Patents
Programmed telephone message transmission system - has transformer coils respectively coupled to relay and microprocessor having memory at read inputInfo
- Publication number
- FR2431803A1 FR2431803A1 FR7821555A FR7821555A FR2431803A1 FR 2431803 A1 FR2431803 A1 FR 2431803A1 FR 7821555 A FR7821555 A FR 7821555A FR 7821555 A FR7821555 A FR 7821555A FR 2431803 A1 FR2431803 A1 FR 2431803A1
- Authority
- FR
- France
- Prior art keywords
- relay
- microprocessor
- memory
- transmission system
- read input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
- H04M1/274—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc
- H04M1/2745—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc using static electronic memories, e.g. chips
- H04M1/2749—Automatic dialling or redialling systems, e.g. on off-hook or redial on busy
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Alarm Systems (AREA)
- Selective Calling Equipment (AREA)
Abstract
The system for transmitting on command previously programmed calls or coded information comprises a transformer (5) one coil of which is connected to the telephone line through a contact (6a) of a relay (6). The other transformer coil is coupled to an output of a microprocessor (2) through an amplifier (4) and a frequency generator (3) and to a command input through a further amplifier (7). A memory (1) is coupled to a read input at the microprocessor (2) which also controls the relay (6). A signal such as an alarm signal received by the microprocessor (2) along input line (2a) causes the latter to activate the relay (6) and connect with a previously selected telephone station to transmit the information previously programmed into the memory (1). The frequency generator (3) preferably acts by pulse modulation of the coded onformation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7821555A FR2431803A1 (en) | 1978-07-20 | 1978-07-20 | Programmed telephone message transmission system - has transformer coils respectively coupled to relay and microprocessor having memory at read input |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7821555A FR2431803A1 (en) | 1978-07-20 | 1978-07-20 | Programmed telephone message transmission system - has transformer coils respectively coupled to relay and microprocessor having memory at read input |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2431803A1 true FR2431803A1 (en) | 1980-02-15 |
Family
ID=9210964
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7821555A Pending FR2431803A1 (en) | 1978-07-20 | 1978-07-20 | Programmed telephone message transmission system - has transformer coils respectively coupled to relay and microprocessor having memory at read input |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2431803A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2434527A1 (en) * | 1978-08-23 | 1980-03-21 | Secom Sa | Telephone message transmitter using twin track magnetic tape - automatically dials prerecorded message |
EP0037573A1 (en) * | 1980-04-07 | 1981-10-14 | NEWART ELECTRONIC SCIENCES, Inc. | Automatic telephonic message transmitting apparatus |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3868479A (en) * | 1972-10-30 | 1975-02-25 | Delta Products Inc | Telephonic alarm reporting apparatus |
US4086434A (en) * | 1976-09-07 | 1978-04-25 | Leo P. Christiansen | Remote condition reporting system |
FR2371739A1 (en) * | 1976-11-23 | 1978-06-16 | Fortchantre Claude | Alarm system automatically alerting given telephone subscriber - with call number supplied to line upon detector actuation |
-
1978
- 1978-07-20 FR FR7821555A patent/FR2431803A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3868479A (en) * | 1972-10-30 | 1975-02-25 | Delta Products Inc | Telephonic alarm reporting apparatus |
US4086434A (en) * | 1976-09-07 | 1978-04-25 | Leo P. Christiansen | Remote condition reporting system |
FR2371739A1 (en) * | 1976-11-23 | 1978-06-16 | Fortchantre Claude | Alarm system automatically alerting given telephone subscriber - with call number supplied to line upon detector actuation |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2434527A1 (en) * | 1978-08-23 | 1980-03-21 | Secom Sa | Telephone message transmitter using twin track magnetic tape - automatically dials prerecorded message |
EP0037573A1 (en) * | 1980-04-07 | 1981-10-14 | NEWART ELECTRONIC SCIENCES, Inc. | Automatic telephonic message transmitting apparatus |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU5399386A (en) | Identification system | |
MY109146A (en) | Three wire low power transmitter water | |
EE03326B1 (en) | Amplifier control system | |
FR2518335B1 (en) | ||
FR2431803A1 (en) | Programmed telephone message transmission system - has transformer coils respectively coupled to relay and microprocessor having memory at read input | |
SE347378B (en) | ||
JPS5534532A (en) | Communication system | |
JPS54157020A (en) | Carrier transmitter | |
GB879606A (en) | Improvements relating to inductive loop communication systems | |
IT1226837B (en) | Transmitting measurements through metal pipe | |
JPS6427331A (en) | Ultrasonic wave transmitter-receiver utilizing piping | |
JPS5552662A (en) | Automatic message-type automatic answering telephone system | |
JPS5685974A (en) | Facsimile apparatus | |
EP0091619A3 (en) | Remote control device | |
DE2965457D1 (en) | Method of and apparatus for transmitting information about flow of fault current in a faulty section of an electric power transmission system | |
JPS5789357A (en) | Control method for power on and off | |
KR970006909B1 (en) | Circuit of data communication | |
JPS54150012A (en) | Signal transmission system | |
JPS56132829A (en) | Automatic repeating system by sound recording equipment | |
JPS57112161A (en) | Telephone set | |
JPS564963A (en) | Automatic dial signal transmission system | |
JPS53131706A (en) | Automatic telephone exchange system | |
JPS5755642A (en) | Branch circuit communication system | |
JPS57208754A (en) | Automatic answering telephone set | |
JPS55138994A (en) | Remote control system |