SG86290A1 - Sync validity detection utilizing a microcomputer - Google Patents

Sync validity detection utilizing a microcomputer

Info

Publication number
SG86290A1
SG86290A1 SG9602465A SG1996002465A SG86290A1 SG 86290 A1 SG86290 A1 SG 86290A1 SG 9602465 A SG9602465 A SG 9602465A SG 1996002465 A SG1996002465 A SG 1996002465A SG 86290 A1 SG86290 A1 SG 86290A1
Authority
SG
Singapore
Prior art keywords
microcomputer
validity detection
detection utilizing
sync
sync validity
Prior art date
Application number
SG9602465A
Other languages
English (en)
Inventor
Tults Juri
Original Assignee
Thomson Consumer Electronics
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 Thomson Consumer Electronics filed Critical Thomson Consumer Electronics
Publication of SG86290A1 publication Critical patent/SG86290A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
    • H03J7/065—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers the counter or frequency divider being used in a phase locked loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Synchronizing For Television (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
SG9602465A 1990-04-30 1991-04-25 Sync validity detection utilizing a microcomputer SG86290A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US51344590A 1990-04-30 1990-04-30

Publications (1)

Publication Number Publication Date
SG86290A1 true SG86290A1 (en) 2002-02-19

Family

ID=24043301

Family Applications (1)

Application Number Title Priority Date Filing Date
SG9602465A SG86290A1 (en) 1990-04-30 1991-04-25 Sync validity detection utilizing a microcomputer

Country Status (6)

Country Link
EP (1) EP0455145A3 (fr)
JP (1) JP2814316B2 (fr)
KR (1) KR100247879B1 (fr)
CN (1) CN1044424C (fr)
MY (1) MY105316A (fr)
SG (1) SG86290A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100544202C (zh) 2002-10-07 2009-09-23 皇家飞利浦电子股份有限公司 电视系统、应用于电视系统中的控制器和方法
US20090254956A1 (en) * 2008-04-04 2009-10-08 Sunrise Telecom Incorporated Communication signal characteristic measurement system
CN103037240A (zh) * 2012-12-11 2013-04-10 天津天地伟业数码科技有限公司 数字光端机的视频信号检测方法
CN112438022B (zh) * 2018-07-11 2024-05-14 西门子股份公司 确保计数器正确计数的故障安全计数器评估器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4654708A (en) * 1983-06-20 1987-03-31 Racal Data Communications Inc. Digital video sync detection
US4823387A (en) * 1987-05-08 1989-04-18 Rca Licensing Corporation Television tuning system with provisions for tuning RF signals with scrambled video information
JPH01125062A (ja) * 1987-11-09 1989-05-17 Mitsubishi Electric Corp 周波数−電圧変換回路

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4319275A (en) * 1980-04-30 1982-03-09 Zenith Radio Corporation Vertical synchronization detection system and method
DE3512873A1 (de) * 1985-04-11 1986-10-30 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Abstimmsystem fuer fernsehgeraete
JPS62200986A (ja) * 1986-02-28 1987-09-04 Fujitsu Ltd 同期信号発生回路
JP2733920B2 (ja) * 1987-02-06 1998-03-30 ソニー株式会社 垂直同期信号検出装置
US4868892A (en) * 1987-05-08 1989-09-19 Rca Licensing Corporation Tuning system with provisions for calculating the local oscillator frequency from an aft characteristic

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4654708A (en) * 1983-06-20 1987-03-31 Racal Data Communications Inc. Digital video sync detection
US4823387A (en) * 1987-05-08 1989-04-18 Rca Licensing Corporation Television tuning system with provisions for tuning RF signals with scrambled video information
JPH01125062A (ja) * 1987-11-09 1989-05-17 Mitsubishi Electric Corp 周波数−電圧変換回路

Also Published As

Publication number Publication date
CN1044424C (zh) 1999-07-28
JPH04229779A (ja) 1992-08-19
MY105316A (en) 1994-09-30
EP0455145A2 (fr) 1991-11-06
CN1056200A (zh) 1991-11-13
KR910019398A (ko) 1991-11-30
JP2814316B2 (ja) 1998-10-22
EP0455145A3 (en) 1992-04-08
KR100247879B1 (ko) 2000-03-15

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