JPS5487110A - Detection circuit for television synchronizing signal - Google Patents

Detection circuit for television synchronizing signal

Info

Publication number
JPS5487110A
JPS5487110A JP15526577A JP15526577A JPS5487110A JP S5487110 A JPS5487110 A JP S5487110A JP 15526577 A JP15526577 A JP 15526577A JP 15526577 A JP15526577 A JP 15526577A JP S5487110 A JPS5487110 A JP S5487110A
Authority
JP
Japan
Prior art keywords
signal
synchronizing signal
synchronizing
detection circuit
sampling
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
JP15526577A
Other languages
Japanese (ja)
Other versions
JPS6038910B2 (en
Inventor
Mitsuyoshi Tsuboike
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 JP15526577A priority Critical patent/JPS6038910B2/en
Publication of JPS5487110A publication Critical patent/JPS5487110A/en
Publication of JPS6038910B2 publication Critical patent/JPS6038910B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Synchronizing For Television (AREA)

Abstract

PURPOSE: To obtain the discrimination output of the presence of TV synchronizing signal, by picking up the TV synchronizing signal and performing the waveform treatment digitally.
CONSTITUTION: The TV synchronizing signal 1a is separated from the TV composite video signal 10a with the slice circuit 1, the astable multivibrator 2 performs rectangular wave oscillation in synchronizing with the signal 1a, the output pulse 2a is the signal 3a by being delayed 3, the sampling point is at low level with the sampling by means of the clock of signal 3a for the signal 1a in the sampling circuit 4, and the output signal 4a is obtained. On the other hand, if the signal 10a is absent, the signal 4a is at high level.
COPYRIGHT: (C)1979,JPO&Japio
JP15526577A 1977-12-23 1977-12-23 TV synchronization signal detection circuit Expired JPS6038910B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15526577A JPS6038910B2 (en) 1977-12-23 1977-12-23 TV synchronization signal detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15526577A JPS6038910B2 (en) 1977-12-23 1977-12-23 TV synchronization signal detection circuit

Publications (2)

Publication Number Publication Date
JPS5487110A true JPS5487110A (en) 1979-07-11
JPS6038910B2 JPS6038910B2 (en) 1985-09-03

Family

ID=15602123

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15526577A Expired JPS6038910B2 (en) 1977-12-23 1977-12-23 TV synchronization signal detection circuit

Country Status (1)

Country Link
JP (1) JPS6038910B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5730472A (en) * 1980-07-29 1982-02-18 Sanyo Electric Co Ltd Reception detecting circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62290078A (en) * 1986-06-09 1987-12-16 古河電気工業株式会社 Connection part of electronic circuit member

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5730472A (en) * 1980-07-29 1982-02-18 Sanyo Electric Co Ltd Reception detecting circuit

Also Published As

Publication number Publication date
JPS6038910B2 (en) 1985-09-03

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