JPS5752271A - Horizontal synchronizing circuit - Google Patents

Horizontal synchronizing circuit

Info

Publication number
JPS5752271A
JPS5752271A JP15977780A JP15977780A JPS5752271A JP S5752271 A JPS5752271 A JP S5752271A JP 15977780 A JP15977780 A JP 15977780A JP 15977780 A JP15977780 A JP 15977780A JP S5752271 A JPS5752271 A JP S5752271A
Authority
JP
Japan
Prior art keywords
circuit
horizontal
pulse
frequency
synchronizing
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
JP15977780A
Other languages
Japanese (ja)
Other versions
JPS6141192B2 (en
Inventor
Nobukazu Hosoya
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.)
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Sanyo Denki 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 Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP15977780A priority Critical patent/JPS5752271A/en
Publication of JPS5752271A publication Critical patent/JPS5752271A/en
Publication of JPS6141192B2 publication Critical patent/JPS6141192B2/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
    • H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising

Abstract

PURPOSE:To execute a synchronizing operation exactly, by detecting horizontal synchronizing saw tooth voltage generated by a pulse which is positioned in the center part of a horizontal scanning period, and a flyback pulse, and controlling the driving timing of a horizontal deflecting circuit by said detected signal. CONSTITUTION:A variable frequency type VCO7 which is oscillated by higher frequency than horizontal frequency is provided on a horizontal synchronizing circuit, frequency of this VCO7 is divided by a frequency-dividing circuit 8, and the divided output is provided to a phase detecting circuit 5 of a horizontal AFC circuit 1 for inputting a horizontal synchronizing pulse HP. A pulse which is positioned in the center part of a horizontal scanning period is generated by said circuits 5 and 8, this pulse is provided to a horizontal deflecting circuit part 3, and by this pulse, saw tooth voltage is generated in the circuit part 3. Also, a phase difference between the pulse from the circuit 8 and a flyback pulse FP outputted from the circuit part 3 is detected by a phase detecting circuit 9 of a horizontal APC circuit 2, a variable phase shifting circuit 11 is controlled by the detected output of the circuit 9, and the driving timing of the circuit part 3 is changed.
JP15977780A 1980-11-12 1980-11-12 Horizontal synchronizing circuit Granted JPS5752271A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15977780A JPS5752271A (en) 1980-11-12 1980-11-12 Horizontal synchronizing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15977780A JPS5752271A (en) 1980-11-12 1980-11-12 Horizontal synchronizing circuit

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP12746080A Division JPS5752268A (en) 1980-09-12 1980-09-12 Horizontal synchronizing circuit

Publications (2)

Publication Number Publication Date
JPS5752271A true JPS5752271A (en) 1982-03-27
JPS6141192B2 JPS6141192B2 (en) 1986-09-12

Family

ID=15701031

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15977780A Granted JPS5752271A (en) 1980-11-12 1980-11-12 Horizontal synchronizing circuit

Country Status (1)

Country Link
JP (1) JPS5752271A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61232778A (en) * 1985-04-03 1986-10-17 ヘーゼルタイン　コーポレーシヨン Deflection control loop for display
EP0625848A1 (en) * 1993-05-19 1994-11-23 Kabushiki Kaisha Toshiba Horizontal synchronizing apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03575Y2 (en) * 1987-09-12 1991-01-10

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS505295U (en) * 1973-05-10 1975-01-20
JPS5315335A (en) * 1976-07-26 1978-02-13 Uniroyal Inc Sulfonylazide
JPS5415661A (en) * 1970-06-10 1979-02-05 Burroughs Corp Display panel
JPS5550779A (en) * 1978-10-05 1980-04-12 Rca Corp Horizontal synchronizing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5415661A (en) * 1970-06-10 1979-02-05 Burroughs Corp Display panel
JPS505295U (en) * 1973-05-10 1975-01-20
JPS5315335A (en) * 1976-07-26 1978-02-13 Uniroyal Inc Sulfonylazide
JPS5550779A (en) * 1978-10-05 1980-04-12 Rca Corp Horizontal synchronizing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61232778A (en) * 1985-04-03 1986-10-17 ヘーゼルタイン　コーポレーシヨン Deflection control loop for display
EP0625848A1 (en) * 1993-05-19 1994-11-23 Kabushiki Kaisha Toshiba Horizontal synchronizing apparatus

Also Published As

Publication number Publication date
JPS6141192B2 (en) 1986-09-12

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