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JPS57106277A - Counter device - Google Patents

Counter device

Info

Publication number
JPS57106277A
JPS57106277A JP18236480A JP18236480A JPS57106277A JP S57106277 A JPS57106277 A JP S57106277A JP 18236480 A JP18236480 A JP 18236480A JP 18236480 A JP18236480 A JP 18236480A JP S57106277 A JPS57106277 A JP S57106277A
Authority
JP
Japan
Prior art keywords
pulse
reset
counter circuit
inputted
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
JP18236480A
Other languages
Japanese (ja)
Other versions
JPS613147B2 (en
Inventor
Juichi Takashima
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP18236480A priority Critical patent/JPS57106277A/en
Publication of JPS57106277A publication Critical patent/JPS57106277A/en
Publication of JPS613147B2 publication Critical patent/JPS613147B2/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

Landscapes

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

Abstract

PURPOSE:To synchronize accurately even a television signal having a low S/N ratio and ghost, by combining the reset blind sector in the horizontal direction and the reset blind sector in the vertical direction to control the reset of a counter circuit. CONSTITUTION:A fundamental clock F is counted by a counter circuit 22, and the output is inputted to a 2fH pulse generator 26 which outputs a pulse I and a horizontal reset blind sector pulse generator 25 which outputs a pulse H. A counter circuit 28 counts the one-field time of a television signal, and the output is inputted to a vertical reset blind sector pulse generator 30 to output a pulse J. The pulse J is inputted to a gate circuit 27 to generate a pulse K. A gate circuit 24 generates a reset pulse L of the counter circuit 22 only when the pulse K is H-level and a horizontal synchronizing pulse G is inputted. Consequently, since only the horizontal synchronizing pulse G near the pulse K is used to reset the counter circuit 22, the stability of synchronization is improved.
JP18236480A 1980-12-23 1980-12-23 Counter device Granted JPS57106277A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18236480A JPS57106277A (en) 1980-12-23 1980-12-23 Counter device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18236480A JPS57106277A (en) 1980-12-23 1980-12-23 Counter device

Publications (2)

Publication Number Publication Date
JPS57106277A true JPS57106277A (en) 1982-07-02
JPS613147B2 JPS613147B2 (en) 1986-01-30

Family

ID=16117014

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18236480A Granted JPS57106277A (en) 1980-12-23 1980-12-23 Counter device

Country Status (1)

Country Link
JP (1) JPS57106277A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60132468A (en) * 1983-04-08 1985-07-15 テクトロニツクス・インコーポレイテツド Method and device for generating timing pulse
JPH01252070A (en) * 1988-03-31 1989-10-06 Rohm Co Ltd Generating method for timing signal for television

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63126144U (en) * 1987-02-13 1988-08-17

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60132468A (en) * 1983-04-08 1985-07-15 テクトロニツクス・インコーポレイテツド Method and device for generating timing pulse
JPH01252070A (en) * 1988-03-31 1989-10-06 Rohm Co Ltd Generating method for timing signal for television

Also Published As

Publication number Publication date
JPS613147B2 (en) 1986-01-30

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