JPS56111332A - Caller discrimination system - Google Patents

Caller discrimination system

Info

Publication number
JPS56111332A
JPS56111332A JP1410580A JP1410580A JPS56111332A JP S56111332 A JPS56111332 A JP S56111332A JP 1410580 A JP1410580 A JP 1410580A JP 1410580 A JP1410580 A JP 1410580A JP S56111332 A JPS56111332 A JP S56111332A
Authority
JP
Japan
Prior art keywords
signal
inputted
transmitter
synchronizing signal
discrimination
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
Application number
JP1410580A
Other languages
Japanese (ja)
Inventor
Manabu Yamane
Eiichiro Murata
Koichi Inoue
Tetsuaki Nakanishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP1410580A priority Critical patent/JPS56111332A/en
Publication of JPS56111332A publication Critical patent/JPS56111332A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/57—Arrangements for indicating or recording the number of the calling subscriber at the called subscriber's set
    • H04M1/573—Line monitoring circuits for detecting caller identification

Abstract

PURPOSE:To increase the number of individuals to be discriminated, by superposing a discrimination signal having an added synchronizing signal upon a transmitted signal. CONSTITUTION:A voice signal inputted from transmitter 1 is amplified by amplifier 3, delta-modulated by encoder 3 and then transmitted via switch 4, modulator 5 and transmitter 6. A synchronizing signal and discrimination signal generated by discrimination signal generator 8 are inputted to modulator 5 via switch 4 and transmitted via transmitter 6. The signal received by receiver 9 is inputted to demodulator 10 and converted into a digital signal. Next, the digital signal is applied to decoder 13 via delay device 11 and switch 12 and converted into voice, which is outputted from receiver 14. Correlator 15 detects the incoming of the synchronizing signal and when the incoming of the synchronizing signal is detected, the output of demodulator 10 is inputted to telephone-number detector 18 to discriminate the caller.
JP1410580A 1980-02-06 1980-02-06 Caller discrimination system Pending JPS56111332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1410580A JPS56111332A (en) 1980-02-06 1980-02-06 Caller discrimination system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1410580A JPS56111332A (en) 1980-02-06 1980-02-06 Caller discrimination system

Publications (1)

Publication Number Publication Date
JPS56111332A true JPS56111332A (en) 1981-09-03

Family

ID=11851832

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1410580A Pending JPS56111332A (en) 1980-02-06 1980-02-06 Caller discrimination system

Country Status (1)

Country Link
JP (1) JPS56111332A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6094542A (en) * 1983-10-28 1985-05-27 Toyo Commun Equip Co Ltd Multiple address communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6094542A (en) * 1983-10-28 1985-05-27 Toyo Commun Equip Co Ltd Multiple address communication system

Similar Documents

Publication Publication Date Title
ZA84786B (en) Method and apparatus for signaling an existing telephone communication between picture telephone apparatuses
EP0478125A3 (en) Discriminating information from noise in a communication signal
JPS56111332A (en) Caller discrimination system
EP0144774A3 (en) Audiotactile communication system
JPS54139417A (en) Interpolation receiving devices at voice short break time
WO1996033582A3 (en) Transmission system with improved tone detection
GB1532103A (en) Method and apparatus for translating multiple frequency signalling
JPS56114469A (en) Voice signal facsimile recording system
JPS57145466A (en) Switchboard
JPS5363910A (en) Audible signal sound signal detection system
JPS5549051A (en) Pcm data signal separation system
WO1996033581A3 (en) Transmission system with improved tone detection
JPS5245804A (en) Telephone memo recording method
SU809665A1 (en) Audio call receiver
JPS57185763A (en) Facsimile device
JPS5354418A (en) Detection system of double-depressin of key
JPS55143479A (en) Automatic calling/answering unit for rainfall alarm
JPS52101A (en) System for transmitting acoustic sigal
JPS57125564A (en) Audio response unit
JPS5614759A (en) Circuit test system
JPS54118702A (en) Privacy telephone set
JPS53142106A (en) Voice answering system
JPS6439900A (en) Receiver
JPS56140751A (en) Test signal transmitting and receiving system
JPS56168450A (en) Fault detecting system of fm radio receiver