JPS5556767A - Vertical synchronism detector circuit - Google Patents

Vertical synchronism detector circuit

Info

Publication number
JPS5556767A
JPS5556767A JP13034578A JP13034578A JPS5556767A JP S5556767 A JPS5556767 A JP S5556767A JP 13034578 A JP13034578 A JP 13034578A JP 13034578 A JP13034578 A JP 13034578A JP S5556767 A JPS5556767 A JP S5556767A
Authority
JP
Japan
Prior art keywords
pulse
synchronous
vertical
circuit
detector circuit
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
JP13034578A
Other languages
Japanese (ja)
Other versions
JPS6150429B2 (en
Inventor
Hiroo Kitazawa
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 JP13034578A priority Critical patent/JPS5556767A/en
Publication of JPS5556767A publication Critical patent/JPS5556767A/en
Publication of JPS6150429B2 publication Critical patent/JPS6150429B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Synchronizing For Television (AREA)

Abstract

PURPOSE: To obtain a vertical synchronous detector circuit which is suited for formation into the integrated circuit and can obtain the pulse of the steady phase.
CONSTITUTION: Up-down counter 23 is controlled by the composite synchronous pulse isolated by synchronous isolator circuit 22. The up- and down-count functions of counter 23 are switched by the composite synchronous pulse applied to terminal 24. In other words, the up-count action is secured in the horizontal synchronous pulse section (5.1μs), the equalization pulse section (about 2.5μs) and the vertical synchronous pulse section (about 29.3μs) each; and the down-counting is given in other sections. When the count number becomes larger than the data which is set previously to comparator 35 after up-counting, the vertical pulse is generated from circuit 35 to be led out to output terminal 37.
COPYRIGHT: (C)1980,JPO&Japio
JP13034578A 1978-10-23 1978-10-23 Vertical synchronism detector circuit Granted JPS5556767A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13034578A JPS5556767A (en) 1978-10-23 1978-10-23 Vertical synchronism detector circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13034578A JPS5556767A (en) 1978-10-23 1978-10-23 Vertical synchronism detector circuit

Publications (2)

Publication Number Publication Date
JPS5556767A true JPS5556767A (en) 1980-04-25
JPS6150429B2 JPS6150429B2 (en) 1986-11-04

Family

ID=15032161

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13034578A Granted JPS5556767A (en) 1978-10-23 1978-10-23 Vertical synchronism detector circuit

Country Status (1)

Country Link
JP (1) JPS5556767A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5679579A (en) * 1979-11-30 1981-06-30 Seiko Epson Corp Detection circuit for vertical synchronizing signal
JPS63110873A (en) * 1986-10-28 1988-05-16 Mitsubishi Electric Corp Noise removing device for synchronizing signal
US5031041A (en) * 1989-04-20 1991-07-09 Thomson Consumer Electronics, Inc. Digital detector/filter for synchronizing signals

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01200946A (en) * 1988-02-05 1989-08-14 Toyo Cap Kk Method and apparatus for preparing straw

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5382121A (en) * 1976-12-27 1978-07-20 Matsushita Electric Ind Co Ltd Vertical synchronizing signal separation circuit by means of digital system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5382121A (en) * 1976-12-27 1978-07-20 Matsushita Electric Ind Co Ltd Vertical synchronizing signal separation circuit by means of digital system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5679579A (en) * 1979-11-30 1981-06-30 Seiko Epson Corp Detection circuit for vertical synchronizing signal
JPS63110873A (en) * 1986-10-28 1988-05-16 Mitsubishi Electric Corp Noise removing device for synchronizing signal
US5031041A (en) * 1989-04-20 1991-07-09 Thomson Consumer Electronics, Inc. Digital detector/filter for synchronizing signals

Also Published As

Publication number Publication date
JPS6150429B2 (en) 1986-11-04

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