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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

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

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