JPS57127366A - Horizontal afc circuit of television picture receiver - Google Patents

Horizontal afc circuit of television picture receiver

Info

Publication number
JPS57127366A
JPS57127366A JP1351581A JP1351581A JPS57127366A JP S57127366 A JPS57127366 A JP S57127366A JP 1351581 A JP1351581 A JP 1351581A JP 1351581 A JP1351581 A JP 1351581A JP S57127366 A JPS57127366 A JP S57127366A
Authority
JP
Japan
Prior art keywords
synchronous
afc
voltage
signal
input terminal
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
JP1351581A
Other languages
Japanese (ja)
Other versions
JPS6126873B2 (en
Inventor
Yoshiharu Mori
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 JP1351581A priority Critical patent/JPS57127366A/en
Publication of JPS57127366A publication Critical patent/JPS57127366A/en
Publication of JPS6126873B2 publication Critical patent/JPS6126873B2/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

Landscapes

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

Abstract

PURPOSE:To eliminate the synchronous disturbance which is caused when a vertical signal is not received accurately, by providing a switching means that works in response to the change of the output level of an integral network which separates the vertical synchronous signal and securing an automatic adjustmen of the AFC control voltage according to the ON/OFF of the switching means. CONSTITUTION:The reference voltage is applied to one of a pair of differential transistors TR1 and TR2 of a horizontal AFC circuit; while the sawtooth wave voltage applied from a flyback transformer through an input terminal 1 is applied to the base of the other differential TR. Then the output signal supplied from the synchronous separating circuit of an input terminal 2 is applied to the common emitter via a TR6. The AFC voltage is delivered from a joint (a) between loads TR4 and TR2 of the AFC circuit. A switching TR7 is connected to the joint (a), and the output voltage of an integral network 3 that separates the vertical synchronous signal from the synchronous separation output is applied to the base of the TR7. At the same time, a composite synchronous signal is supplied to an input terminal 4. Then the AFC control voltage is automatically controlled according to the ON/OFF of the TR7 to eliminate the synchronous disturbance.
JP1351581A 1981-01-30 1981-01-30 Horizontal afc circuit of television picture receiver Granted JPS57127366A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1351581A JPS57127366A (en) 1981-01-30 1981-01-30 Horizontal afc circuit of television picture receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1351581A JPS57127366A (en) 1981-01-30 1981-01-30 Horizontal afc circuit of television picture receiver

Publications (2)

Publication Number Publication Date
JPS57127366A true JPS57127366A (en) 1982-08-07
JPS6126873B2 JPS6126873B2 (en) 1986-06-23

Family

ID=11835280

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1351581A Granted JPS57127366A (en) 1981-01-30 1981-01-30 Horizontal afc circuit of television picture receiver

Country Status (1)

Country Link
JP (1) JPS57127366A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5325734A (en) * 1976-08-21 1978-03-09 Nissan Motor Co Ltd Exhaust purifier of internal combustion engine
JPS55944A (en) * 1978-06-19 1980-01-07 Fujitsu Ltd Clock switching system
JPS5625874A (en) * 1979-08-09 1981-03-12 Matsushita Electric Ind Co Ltd Horizontal afc unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5325734A (en) * 1976-08-21 1978-03-09 Nissan Motor Co Ltd Exhaust purifier of internal combustion engine
JPS55944A (en) * 1978-06-19 1980-01-07 Fujitsu Ltd Clock switching system
JPS5625874A (en) * 1979-08-09 1981-03-12 Matsushita Electric Ind Co Ltd Horizontal afc unit

Also Published As

Publication number Publication date
JPS6126873B2 (en) 1986-06-23

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