JPS5628552A - Signal receiving system - Google Patents

Signal receiving system

Info

Publication number
JPS5628552A
JPS5628552A JP10460779A JP10460779A JPS5628552A JP S5628552 A JPS5628552 A JP S5628552A JP 10460779 A JP10460779 A JP 10460779A JP 10460779 A JP10460779 A JP 10460779A JP S5628552 A JPS5628552 A JP S5628552A
Authority
JP
Japan
Prior art keywords
signal
receiving
signal receiving
circuits
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
JP10460779A
Other languages
Japanese (ja)
Inventor
Masaharu Ito
Toyohiko Sato
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP10460779A priority Critical patent/JPS5628552A/en
Publication of JPS5628552A publication Critical patent/JPS5628552A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Abstract

PURPOSE:To discriminate receiving of the signal of a specific frequency to simplify the signal receiving circuit, by providing a common signal receiving dicriminating means for plural lines to perform scanning at every fixed period. CONSTITUTION:For receiving of the signal of a specific frequency, circuits 80-8N corresponding to plural lines are scanned successively at the fundamental period, which is the receiving discrimination unit of the signal, by ring counter CTR and decoder DEC. In case of incoming indication from circuits 80-8N, the output of signal receiving discriminating means REC provided commonly is led in, and the signal receiving discrimination result is transferred to corresponding line corresponding circuits 80-8N; and in case of no incoming indication, signals of specific frequencies which come to line corresponding circuits 80-8N for a fixed time respectively are subjected to receiving discrimination without the signal receiving discrimination operation. As a result, the signal receiving circuit is simplified.
JP10460779A 1979-08-17 1979-08-17 Signal receiving system Pending JPS5628552A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10460779A JPS5628552A (en) 1979-08-17 1979-08-17 Signal receiving system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10460779A JPS5628552A (en) 1979-08-17 1979-08-17 Signal receiving system

Publications (1)

Publication Number Publication Date
JPS5628552A true JPS5628552A (en) 1981-03-20

Family

ID=14385100

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10460779A Pending JPS5628552A (en) 1979-08-17 1979-08-17 Signal receiving system

Country Status (1)

Country Link
JP (1) JPS5628552A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01284094A (en) * 1988-05-10 1989-11-15 Canon Inc Communication equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01284094A (en) * 1988-05-10 1989-11-15 Canon Inc Communication equipment

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