JPS5257708A - Signal loss detection circuit - Google Patents

Signal loss detection circuit

Info

Publication number
JPS5257708A
JPS5257708A JP50132883A JP13288375A JPS5257708A JP S5257708 A JPS5257708 A JP S5257708A JP 50132883 A JP50132883 A JP 50132883A JP 13288375 A JP13288375 A JP 13288375A JP S5257708 A JPS5257708 A JP S5257708A
Authority
JP
Japan
Prior art keywords
detection circuit
signal loss
loss detection
input signal
level
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
JP50132883A
Other languages
Japanese (ja)
Inventor
Mitsuru Kudo
Takao Sato
Tetsuo Ito
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP50132883A priority Critical patent/JPS5257708A/en
Publication of JPS5257708A publication Critical patent/JPS5257708A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

PURPOSE:Through the use of level change detection circuit which changes the output to low level when input signal level does not change while changes the output to high level when the input signal has a change respectively, the abnormality of input signal can be tetected assuredly, thus heightening the dependability of the equipment.
JP50132883A 1975-11-07 1975-11-07 Signal loss detection circuit Pending JPS5257708A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50132883A JPS5257708A (en) 1975-11-07 1975-11-07 Signal loss detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50132883A JPS5257708A (en) 1975-11-07 1975-11-07 Signal loss detection circuit

Publications (1)

Publication Number Publication Date
JPS5257708A true JPS5257708A (en) 1977-05-12

Family

ID=15091777

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50132883A Pending JPS5257708A (en) 1975-11-07 1975-11-07 Signal loss detection circuit

Country Status (1)

Country Link
JP (1) JPS5257708A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS555586A (en) * 1978-06-29 1980-01-16 Mitsubishi Electric Corp Demodulation circuit for digital signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS555586A (en) * 1978-06-29 1980-01-16 Mitsubishi Electric Corp Demodulation circuit for digital signal

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