JPS5444508A - Pcm signal demodulator - Google Patents

Pcm signal demodulator

Info

Publication number
JPS5444508A
JPS5444508A JP11087677A JP11087677A JPS5444508A JP S5444508 A JPS5444508 A JP S5444508A JP 11087677 A JP11087677 A JP 11087677A JP 11087677 A JP11087677 A JP 11087677A JP S5444508 A JPS5444508 A JP S5444508A
Authority
JP
Japan
Prior art keywords
pulse
output
synchronizing signal
supplied
synchronizing
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.)
Granted
Application number
JP11087677A
Other languages
Japanese (ja)
Other versions
JPS6052505B2 (en
Inventor
Kentaro Odaka
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP52110876A priority Critical patent/JPS6052505B2/en
Publication of JPS5444508A publication Critical patent/JPS5444508A/en
Publication of JPS6052505B2 publication Critical patent/JPS6052505B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Synchronizing For Television (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE: To surely draw out the subsequent synchronizing Signal even if the synchronizing signal has dropped out owing to the fault in transmission line by widening the pulse width of window pulses when a data error is detected.
CONSTITUTION: When synchronizing detection output Pt and pulse width calibration output Pw are supplied to AND 64, the output thereof is supplied as a window pulse together with a reproduction horizontal synchronizing signal PHD to AND 47. When the output of the AND 47 is supplied to a monostable multi 48, the synchronizing pulse Pr in which the rise and fall of the signal PHD coincide apperas in its output termianl 49. By the rise of this pulse Pr, a counter, etc. constituting the pulse generating circuit on the write side are reset and the pulse being generated becomes the one synchronized with the reproduction PCM signal, then the data are correctly drawn out in a data draw-out circuit and time axis expanding processing is also correctly accomplished. Thereby, the subsequent synchronizing signal may be correctly drawn out even if the synchronizing signal has dropped out owing to the fault in the transmission line.
COPYRIGHT: (C)1979,JPO&Japio
JP52110876A 1977-09-14 1977-09-14 PCM signal demodulator Expired JPS6052505B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52110876A JPS6052505B2 (en) 1977-09-14 1977-09-14 PCM signal demodulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52110876A JPS6052505B2 (en) 1977-09-14 1977-09-14 PCM signal demodulator

Publications (2)

Publication Number Publication Date
JPS5444508A true JPS5444508A (en) 1979-04-09
JPS6052505B2 JPS6052505B2 (en) 1985-11-19

Family

ID=14546928

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52110876A Expired JPS6052505B2 (en) 1977-09-14 1977-09-14 PCM signal demodulator

Country Status (1)

Country Link
JP (1) JPS6052505B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5760514A (en) * 1980-09-26 1982-04-12 Hitachi Ltd Synchronizing signal protection circuit
JPS58139311A (en) * 1982-02-12 1983-08-18 Hitachi Ltd Detecting and protecting circuit of synchronizing signal
JPS59104731A (en) * 1982-12-02 1984-06-16 Sanyo Electric Co Ltd Generating circuit of synchronizing circuit
JPS60151877A (en) * 1984-01-20 1985-08-09 Canon Inc Data reproducer
JPS61161045A (en) * 1985-01-08 1986-07-21 Mitsubishi Electric Corp Frame synchronizing circuit

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5760514A (en) * 1980-09-26 1982-04-12 Hitachi Ltd Synchronizing signal protection circuit
JPH0470712B2 (en) * 1980-09-26 1992-11-11 Hitachi Ltd
JPS58139311A (en) * 1982-02-12 1983-08-18 Hitachi Ltd Detecting and protecting circuit of synchronizing signal
JPH0551986B2 (en) * 1982-02-12 1993-08-04 Hitachi Ltd
JPS59104731A (en) * 1982-12-02 1984-06-16 Sanyo Electric Co Ltd Generating circuit of synchronizing circuit
JPS60151877A (en) * 1984-01-20 1985-08-09 Canon Inc Data reproducer
JPS61161045A (en) * 1985-01-08 1986-07-21 Mitsubishi Electric Corp Frame synchronizing circuit
JPH0528539B2 (en) * 1985-01-08 1993-04-26 Mitsubishi Electric Corp

Also Published As

Publication number Publication date
JPS6052505B2 (en) 1985-11-19

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