JPS5687208A - Data section extracting circuit in reproducing device of video format pcm signal - Google Patents

Data section extracting circuit in reproducing device of video format pcm signal

Info

Publication number
JPS5687208A
JPS5687208A JP16388979A JP16388979A JPS5687208A JP S5687208 A JPS5687208 A JP S5687208A JP 16388979 A JP16388979 A JP 16388979A JP 16388979 A JP16388979 A JP 16388979A JP S5687208 A JPS5687208 A JP S5687208A
Authority
JP
Japan
Prior art keywords
data section
synchronizing pulses
pcm signal
video format
separated
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
JP16388979A
Other languages
Japanese (ja)
Other versions
JPH0142067B2 (en
Inventor
Saburo Takaoka
Yoichiro Tsuda
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP16388979A priority Critical patent/JPS5687208A/en
Publication of JPS5687208A publication Critical patent/JPS5687208A/en
Publication of JPH0142067B2 publication Critical patent/JPH0142067B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE: To perform accurate data section extraction by detecting a data section by counting horizontal synchronizing pulses H detected by being separated from an input PCM signal, and also by shifting the count starting point for synchronizing pulses H when a shift in SH pulse position occurs continuously be more than prescribed times.
CONSTITUTION: Horizontal synchronizing pulses (H) detected by being separated from an input video format PCM signal are counted by a counter to detect a data section individually and a position where an SH pulse should be generated is compared with the position of the SH pulse actually detected by being separated from the input signal. When its position shift occurs continuously by prescribed times (8 times), the counter is reset and the count starting point for H synchronizing pulses is shifted. An influence of a dropout in the input signal or external noises is absrobed in a short time, so that this system can obtain the sufficient effect.
COPYRIGHT: (C)1981,JPO&Japio
JP16388979A 1979-12-17 1979-12-17 Data section extracting circuit in reproducing device of video format pcm signal Granted JPS5687208A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16388979A JPS5687208A (en) 1979-12-17 1979-12-17 Data section extracting circuit in reproducing device of video format pcm signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16388979A JPS5687208A (en) 1979-12-17 1979-12-17 Data section extracting circuit in reproducing device of video format pcm signal

Publications (2)

Publication Number Publication Date
JPS5687208A true JPS5687208A (en) 1981-07-15
JPH0142067B2 JPH0142067B2 (en) 1989-09-08

Family

ID=15782719

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16388979A Granted JPS5687208A (en) 1979-12-17 1979-12-17 Data section extracting circuit in reproducing device of video format pcm signal

Country Status (1)

Country Link
JP (1) JPS5687208A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57169910A (en) * 1981-04-14 1982-10-19 Akai Electric Co Ltd Data area detecting circuit
JPS6013359A (en) * 1983-07-01 1985-01-23 Matsushita Electric Ind Co Ltd PCM recording/playback device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57169910A (en) * 1981-04-14 1982-10-19 Akai Electric Co Ltd Data area detecting circuit
JPS6013359A (en) * 1983-07-01 1985-01-23 Matsushita Electric Ind Co Ltd PCM recording/playback device

Also Published As

Publication number Publication date
JPH0142067B2 (en) 1989-09-08

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