JPS5773575A - Synchronizing signal generating circuit - Google Patents

Synchronizing signal generating circuit

Info

Publication number
JPS5773575A
JPS5773575A JP14829780A JP14829780A JPS5773575A JP S5773575 A JPS5773575 A JP S5773575A JP 14829780 A JP14829780 A JP 14829780A JP 14829780 A JP14829780 A JP 14829780A JP S5773575 A JPS5773575 A JP S5773575A
Authority
JP
Japan
Prior art keywords
counter
frequency
sync
subcarrier
signal
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
JP14829780A
Other languages
Japanese (ja)
Inventor
Masaki Hirano
Yoshioki Omura
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 JP14829780A priority Critical patent/JPS5773575A/en
Publication of JPS5773575A publication Critical patent/JPS5773575A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/06—Generation of synchronising signals
    • H04N5/067—Arrangements or circuits at the transmitter end

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Synchronizing For Television (AREA)

Abstract

PURPOSE:To keep constant the phase relation between subcarrier and horizontal synchronizing signal at all times, by frequency-dividing a reference signal of specific frequency with a counter operated with a suitable phase. CONSTITUTION:An output signal of a horizontal oscillator 7 is frequency-divided to 1/4 at a counter 8 and a subcarrier signal is obtained via a filter 9. On the other hand, the output signal of a quartz oscillator 7 is frequency-divided to 1/5 at a counter 10 to be 182 fH and to 1/182 at a counter 11 and H. SYNC is produced from a SYNC generating section 12. To set the H, SYNC, 1/5 frequency-division of the subcarrier at a counter 13 and 1/91 frequency-division at a counter 14 are produced as set pulses, and 1/5 count of the counter 10 and 1/182 count of the count 11 are set, allowing to keep constant the phase relation between the H. SYNC and the subcarrier signal.
JP14829780A 1980-10-24 1980-10-24 Synchronizing signal generating circuit Pending JPS5773575A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14829780A JPS5773575A (en) 1980-10-24 1980-10-24 Synchronizing signal generating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14829780A JPS5773575A (en) 1980-10-24 1980-10-24 Synchronizing signal generating circuit

Publications (1)

Publication Number Publication Date
JPS5773575A true JPS5773575A (en) 1982-05-08

Family

ID=15449620

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14829780A Pending JPS5773575A (en) 1980-10-24 1980-10-24 Synchronizing signal generating circuit

Country Status (1)

Country Link
JP (1) JPS5773575A (en)

Similar Documents

Publication Publication Date Title
GB2301499A (en) Adjustable frequency synthesizer
JPS5773575A (en) Synchronizing signal generating circuit
JPS5357914A (en) Synchronous oscillator
JPS5354456A (en) Phase synchronizing oscillator
JPS5582581A (en) Color synchronism circuit of apc type
JPS56125118A (en) Digital phase synchronizing circuit
JPS52106229A (en) Carrier wave signal formation circuit containing line offset
JPS6412691A (en) Video signal sampling circuit
JPS572168A (en) Generating system of synchronous signal
JPS57173267A (en) Afc circuit
JPS5399813A (en) Display unit for reception frequency
JPS5275211A (en) Delta tune circuit
JPS55102971A (en) Pal-system synchronizing signal generator
JPS53128210A (en) Display unit for receiving frequency
JPS55162680A (en) Gate pulse generator
JPS5337334A (en) Display unit
JPS5595467A (en) Synchronizing signal generator
JPS51151002A (en) Receiver unit
JPS6441365A (en) Digital signal generator
JPS5372443A (en) Oscillator
JPS5362576A (en) Frequency counting device
JPS57184373A (en) Pulse generating circuit
JPS5732133A (en) Phase-synchronous oscillator
JPS5244149A (en) Synchronous detection circuit
JPS53128203A (en) Display system for receiving frequency