JPS5685980A - Horizontal synchronizing signal separating circuit - Google Patents

Horizontal synchronizing signal separating circuit

Info

Publication number
JPS5685980A
JPS5685980A JP16227479A JP16227479A JPS5685980A JP S5685980 A JPS5685980 A JP S5685980A JP 16227479 A JP16227479 A JP 16227479A JP 16227479 A JP16227479 A JP 16227479A JP S5685980 A JPS5685980 A JP S5685980A
Authority
JP
Japan
Prior art keywords
terminal
counter
output
synchronizing signal
logical
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
JP16227479A
Other languages
Japanese (ja)
Other versions
JPS6033335B2 (en
Inventor
Katsuyuki Ikeda
Yoshio Nakazawa
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha 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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP16227479A priority Critical patent/JPS6033335B2/en
Publication of JPS5685980A publication Critical patent/JPS5685980A/en
Publication of JPS6033335B2 publication Critical patent/JPS6033335B2/en
Expired 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
    • H04N5/10—Separation of line synchronising signal from frame synchronising signal or vice versa

Landscapes

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

Abstract

PURPOSE:To easily make the circuit an IC, by raising the noise resistance, characteristic, reducing the characteristic required for the peripheral circuit, and also removing a capacitor from the circuit. CONSTITUTION:When a composite synchronizing signal is provided to the input terminal 301, logical ''0'' is output by rise of an input signal to the output terminal 306 of the FF309, and the counter 303 is made a count state. The counter 303 counts a clock pulse provided to the counter terminal 308, and when the count number has attained to a fixed value, the C terminal output is made logical ''1''. The time requirEd for making this count number attain to the fixed value is decided in advance so as to become 0.5-1H. As soon as the C terminal output becomes logical ''1'', the terminal 306 becomes logical ''1'', and the counter 303 is reset. As a result, a coincidence pulse of rise of a horizontal synchronizing signal, and phase is obtained by the output terminal 305 of the FF309. According to such a constitution, even if a noise has entered when the potential of the terminal 307 is low, it is masked by the outputs of the FF309 and the counter 303, and it does not exercise influence on the output waveform.
JP16227479A 1979-12-14 1979-12-14 Horizontal sync signal separation circuit Expired JPS6033335B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16227479A JPS6033335B2 (en) 1979-12-14 1979-12-14 Horizontal sync signal separation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16227479A JPS6033335B2 (en) 1979-12-14 1979-12-14 Horizontal sync signal separation circuit

Publications (2)

Publication Number Publication Date
JPS5685980A true JPS5685980A (en) 1981-07-13
JPS6033335B2 JPS6033335B2 (en) 1985-08-02

Family

ID=15751343

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16227479A Expired JPS6033335B2 (en) 1979-12-14 1979-12-14 Horizontal sync signal separation circuit

Country Status (1)

Country Link
JP (1) JPS6033335B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5040071A (en) * 1990-03-21 1991-08-13 Eastman Kodak Company Image sensor having multiple horizontal shift registers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5040071A (en) * 1990-03-21 1991-08-13 Eastman Kodak Company Image sensor having multiple horizontal shift registers

Also Published As

Publication number Publication date
JPS6033335B2 (en) 1985-08-02

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