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JPS5564475A - Synchronous coupling system of pal system synchronizing signal generator - Google Patents

Synchronous coupling system of pal system synchronizing signal generator

Info

Publication number
JPS5564475A
JPS5564475A JP13796678A JP13796678A JPS5564475A JP S5564475 A JPS5564475 A JP S5564475A JP 13796678 A JP13796678 A JP 13796678A JP 13796678 A JP13796678 A JP 13796678A JP S5564475 A JPS5564475 A JP S5564475A
Authority
JP
Japan
Prior art keywords
synchronizing signal
signal
oscillator vco
synchronous coupling
output
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
JP13796678A
Other languages
Japanese (ja)
Other versions
JPS581595B2 (en
Inventor
Yoshihiro Matsubara
Naoki Miyauchi
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.)
Kokusai Denki Electric Inc
Original Assignee
Hitachi Denshi KK
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 Denshi KK filed Critical Hitachi Denshi KK
Priority to JP13796678A priority Critical patent/JPS581595B2/en
Publication of JPS5564475A publication Critical patent/JPS5564475A/en
Publication of JPS581595B2 publication Critical patent/JPS581595B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Synchronizing For Television (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE: To attain synchronous coupling with an external synchronizing signal in an extremely-short time by making a phase comparison without dividing the output of a voltage control oscillator.
CONSTITUTION: At the time of synchronism with internal reference signal SS, switches SW1 and SW2 are changed over to input-1 sides and internal reference signal SS is compared with the output of voltage control oscillator VCO divided by four by phase comparator PC, so that operations of oscillator VCO will synchronize easily with signal SS. For synchronous coupling with external synchronizing signal SR, switches SW1 and SW2 are both changed over to input-2 sides and comparator PC compares signal SR with the undivided output of oscillator VCO. As a result, since an external horizontal synchronizing signal as external synchronizing signal SR are equal in frequency to horizontal synchronizing signal SH based upon oscillator VCO, oscillator VCO synchronizes with signal SR in an extremely-short time.
COPYRIGHT: (C)1980,JPO&Japio
JP13796678A 1978-11-10 1978-11-10 Synchronous coupling method of PAL synchronization signal generator Expired JPS581595B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13796678A JPS581595B2 (en) 1978-11-10 1978-11-10 Synchronous coupling method of PAL synchronization signal generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13796678A JPS581595B2 (en) 1978-11-10 1978-11-10 Synchronous coupling method of PAL synchronization signal generator

Publications (2)

Publication Number Publication Date
JPS5564475A true JPS5564475A (en) 1980-05-15
JPS581595B2 JPS581595B2 (en) 1983-01-12

Family

ID=15210888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13796678A Expired JPS581595B2 (en) 1978-11-10 1978-11-10 Synchronous coupling method of PAL synchronization signal generator

Country Status (1)

Country Link
JP (1) JPS581595B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6111238A (en) * 1984-06-27 1986-01-18 帝人株式会社 Flexible laminate
JPS63188186U (en) * 1987-05-27 1988-12-02

Also Published As

Publication number Publication date
JPS581595B2 (en) 1983-01-12

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