JPS5623075A - Television picture receiver - Google Patents

Television picture receiver

Info

Publication number
JPS5623075A
JPS5623075A JP9900479A JP9900479A JPS5623075A JP S5623075 A JPS5623075 A JP S5623075A JP 9900479 A JP9900479 A JP 9900479A JP 9900479 A JP9900479 A JP 9900479A JP S5623075 A JPS5623075 A JP S5623075A
Authority
JP
Japan
Prior art keywords
circuit
oscillation frequency
horizontal
voltage
clamping
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.)
Pending
Application number
JP9900479A
Other languages
Japanese (ja)
Inventor
Kenji Terai
Shunichi Motonami
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9900479A priority Critical patent/JPS5623075A/en
Publication of JPS5623075A publication Critical patent/JPS5623075A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/20—Prevention of damage to cathode-ray tubes in the event of failure of scanning

Landscapes

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

Abstract

PURPOSE:To prevent the malfunction of the overvoltage protecting circuit, by connecting the clamping circuit to the output side of the phase detecting circuit to prevent the horizontal oscillation frequency from being set lower than the fixed level. CONSTITUTION:Constant voltage power source 11 is connected to the output side of phase detecting circuit 2 via diode 10. The clamping circuit consisting of diode 10 and source 11 clamps the control voltage applied to horizontal oscillating circuit 3 with the clamping voltage to prevent the horizontal frequency from being set lower than the fixed level. In case the horizontal oscillation frequency increases to advance the phase of output saw-tooth wave signal b of integral network 9 by DELTAphi1, a difference is cuased between the plus and the minus of output C of circuit 2. Thus phase detection mean output d is turned into voltage V1 which varied by DELTAV1 compared with reference voltage V0, and circuit 3 is controlled to lower the horizontal oscillation frequency. Thus the oscillation frequency is set to original center horizontal oscillation frequency. On the contrary, the horizontal frequency lowers down, the control voltage is clamped by the clamping voltage to give the control so that the horizontal oscillation frequency may not become lower than the fixed level.
JP9900479A 1979-08-02 1979-08-02 Television picture receiver Pending JPS5623075A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9900479A JPS5623075A (en) 1979-08-02 1979-08-02 Television picture receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9900479A JPS5623075A (en) 1979-08-02 1979-08-02 Television picture receiver

Publications (1)

Publication Number Publication Date
JPS5623075A true JPS5623075A (en) 1981-03-04

Family

ID=14234860

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9900479A Pending JPS5623075A (en) 1979-08-02 1979-08-02 Television picture receiver

Country Status (1)

Country Link
JP (1) JPS5623075A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5925830A (en) * 1982-08-03 1984-02-09 Showa Denko Kk Automobile sealant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5925830A (en) * 1982-08-03 1984-02-09 Showa Denko Kk Automobile sealant
JPS6314738B2 (en) * 1982-08-03 1988-04-01 Showa Denko Kk

Similar Documents

Publication Publication Date Title
JPS5675780A (en) Video signal processing circuit
MY107163A (en) Apparatus for correcting a black level of a video signal.
CA2001907A1 (en) A voltage regulator in a television apparatus
JPS5623075A (en) Television picture receiver
US4176286A (en) Signal translator with squelch
ES459130A1 (en) Receiver for a HF-intrusion detection system
JPS5752268A (en) Horizontal synchronizing circuit
EP0398598A3 (en) Horizontal deflection circuits
JPS56169969A (en) Synchronisum separation circuit
US4211938A (en) Tone detector
JPS5568774A (en) Blooming preventing device
JPS5525208A (en) Horizontal automatic frequency control circuit
SU725191A1 (en) Method of control of parallel current inverter
JPS57135519A (en) Tuning circuit
SU1107111A1 (en) A.c. voltage stabilizer
JPS57104373A (en) Television receiver
JPS6460087A (en) Signal processing circuit
SU1552126A1 (en) Apparatus for detecting in metal structures
JPS5538788A (en) Tracking correction device for broadcast receiver
JPS55143821A (en) Automatic frequency control unit
JPS5548684A (en) Watch
EP0340441A3 (en) Photoelectric switch
JPS57155883A (en) Vertical synchronizing device
JPS5797280A (en) Picture elimination circuit
JPS5723334A (en) Tuning circuit equipped with vco