JPS57132479A - Synchronizing separation circuit - Google Patents

Synchronizing separation circuit

Info

Publication number
JPS57132479A
JPS57132479A JP1756881A JP1756881A JPS57132479A JP S57132479 A JPS57132479 A JP S57132479A JP 1756881 A JP1756881 A JP 1756881A JP 1756881 A JP1756881 A JP 1756881A JP S57132479 A JPS57132479 A JP S57132479A
Authority
JP
Japan
Prior art keywords
circuit
horizontal synchronizing
terminal
signal
synchronizing 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.)
Granted
Application number
JP1756881A
Other languages
Japanese (ja)
Other versions
JPS619787B2 (en
Inventor
Shigehiro Ito
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor 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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP1756881A priority Critical patent/JPS57132479A/en
Publication of JPS57132479A publication Critical patent/JPS57132479A/en
Publication of JPS619787B2 publication Critical patent/JPS619787B2/ja
Granted 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
    • H04N5/08—Separation of synchronising signals from picture signals

Landscapes

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

Abstract

PURPOSE:To separate and reproduce stably and surely horizontal synchronizing signal against ghost, by using a frequency component of the horizontal synchronizing signal at the part where a video signal component at a vertical blanking period is not in existing. CONSTITUTION:A video signal applied to a terminal l1 is applied to an addition filtering circuit SAA and a low pass filter circuit LPA. The SAA consists of a plurality of delay circuits and an addition circuit adding an input signal and output of each delay circuit, and constitutes a low pass filter, unnecessary harmonics is removed at the LPA, and a fundamental wave component of the vertical and horizontal synchronizing signals is obtained at a terminal l3. Next, a subtraction filter SDF of the next stage consists of a delay circuit and a subtraction circuit, and a frequency component of the horizontal synchronizing signal is obtained at an output terminal l4, and no video signal is in existing to the horizontal synchronizing signal component during the vertical blanking period. The signal at the terminal l4 is applied to a circuit PLP consisting of a PLL circuit via a gate circuit GAT and the reproduced horizontal synchronizing signal is obtained at a terminal l7.
JP1756881A 1981-02-10 1981-02-10 Synchronizing separation circuit Granted JPS57132479A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1756881A JPS57132479A (en) 1981-02-10 1981-02-10 Synchronizing separation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1756881A JPS57132479A (en) 1981-02-10 1981-02-10 Synchronizing separation circuit

Publications (2)

Publication Number Publication Date
JPS57132479A true JPS57132479A (en) 1982-08-16
JPS619787B2 JPS619787B2 (en) 1986-03-26

Family

ID=11947516

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1756881A Granted JPS57132479A (en) 1981-02-10 1981-02-10 Synchronizing separation circuit

Country Status (1)

Country Link
JP (1) JPS57132479A (en)

Also Published As

Publication number Publication date
JPS619787B2 (en) 1986-03-26

Similar Documents

Publication Publication Date Title
JPS5580966A (en) Noise eliminating system for television signal
JPS56153892A (en) Comb type filter
ES8202231A1 (en) Controlled output composite keying signal generator for a television receiver
ES8303867A1 (en) Colour television receiver.
EP0177285A3 (en) Adaptive filtering system
JPS57132479A (en) Synchronizing separation circuit
ES486553A1 (en) Video processing system including comb filters
KR910005704A (en) Signal Separator
GB1472807A (en) Circuits for extracting luminance and chrominance signal components from a composite colour television signal
ES8206946A1 (en) Circuit arrangement for separating the components of a PAL color television signal
JPS56110391A (en) Automatic gain control circuit of television signal
JPS54149424A (en) Signal detector of television receiver
JPS57199386A (en) Color video signal recording system and reproducing system
JPS5648761A (en) Vertical synchronism detecting circuit
JPS56119581A (en) Clamp circuit
JPS5575386A (en) Detector circuit for vertical synchronous pulse
JPS56132084A (en) Recording system and recording plus reproducing system for color video signal
JPS5755680A (en) Television receiver
JPS56117481A (en) Color television camera
ES8308662A1 (en) Digital signal separation network and television receiver including such a network
JPS5783970A (en) Synchronizing pulse separating circuit
JPS5547778A (en) Noise rejection circuit
JPS57131174A (en) Synchronizing separator circuit
GB1207442A (en) Apparatus for cross-fading between two television signals
JPS57136868A (en) Synchronous separating circuit