JPS57118474A - Picture compensating device - Google Patents

Picture compensating device

Info

Publication number
JPS57118474A
JPS57118474A JP422381A JP422381A JPS57118474A JP S57118474 A JPS57118474 A JP S57118474A JP 422381 A JP422381 A JP 422381A JP 422381 A JP422381 A JP 422381A JP S57118474 A JPS57118474 A JP S57118474A
Authority
JP
Japan
Prior art keywords
crt
current
fluctuation
point
raster
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
JP422381A
Other languages
Japanese (ja)
Inventor
Sumikazu Kubo
Tomu Yoshimi
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 JP422381A priority Critical patent/JPS57118474A/en
Publication of JPS57118474A publication Critical patent/JPS57118474A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)

Abstract

PURPOSE:To compensate the raster distortion caused by the fluctuation of a CRT current, by detecting a part of the high pressure to be applied to a CRT and then amplifying the high voltage to feed it back to a part of a deflecting distortion compensating circuit. CONSTITUTION:The detection is carried out to a part of the CRT voltage which is caused by the fluctuation of the CRT current at point A in the figure and modulated by a vertical rate. This detected voltage is controlled by a variable resistance VR2, amplified by a transistor TRTR2 and furthermore receives the amplification and the inversion of phase through a TRTR3. The output is applied to point B of a vertical line compensating output circuit via a DC breaking capacitor C3 and an impedance resistance R5. Then the signal amplified by a TRTR1 is supplied to a winding L2 of a vertical line compensating transformer T1. Thus the maximum point of the raster amplitude is identical with the minimum value of the current flowing to the winding L2, and the inductance increases for windings L1 and L3 to decrease the horizontal deflecting current. As a result, the raster distortion caused by the current fluctuation of the CRT can be compensated.
JP422381A 1981-01-14 1981-01-14 Picture compensating device Pending JPS57118474A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP422381A JPS57118474A (en) 1981-01-14 1981-01-14 Picture compensating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP422381A JPS57118474A (en) 1981-01-14 1981-01-14 Picture compensating device

Publications (1)

Publication Number Publication Date
JPS57118474A true JPS57118474A (en) 1982-07-23

Family

ID=11578589

Family Applications (1)

Application Number Title Priority Date Filing Date
JP422381A Pending JPS57118474A (en) 1981-01-14 1981-01-14 Picture compensating device

Country Status (1)

Country Link
JP (1) JPS57118474A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5967783A (en) * 1982-10-08 1984-04-17 Sony Corp Horizontal deflection and high voltage generating circuit
JPS60145766U (en) * 1984-03-08 1985-09-27 株式会社東芝 Deflection distortion correction circuit
JPS61189776A (en) * 1985-02-18 1986-08-23 Matsushita Electric Ind Co Ltd Television raster correcting circuit
JPH01318464A (en) * 1988-05-06 1989-12-22 Thomson Consumer Electron Inc Raster size adjusting circuit
WO2004012443A1 (en) * 2002-07-26 2004-02-05 Matsushita Electric Industrial Co., Ltd. Cathode ray tube apparatus preventing distortion of image caused by variation of luminance

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5561172A (en) * 1978-11-01 1980-05-08 Mitsubishi Electric Corp Horizontal deflection circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5561172A (en) * 1978-11-01 1980-05-08 Mitsubishi Electric Corp Horizontal deflection circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5967783A (en) * 1982-10-08 1984-04-17 Sony Corp Horizontal deflection and high voltage generating circuit
JPS60145766U (en) * 1984-03-08 1985-09-27 株式会社東芝 Deflection distortion correction circuit
JPS61189776A (en) * 1985-02-18 1986-08-23 Matsushita Electric Ind Co Ltd Television raster correcting circuit
JPH01318464A (en) * 1988-05-06 1989-12-22 Thomson Consumer Electron Inc Raster size adjusting circuit
WO2004012443A1 (en) * 2002-07-26 2004-02-05 Matsushita Electric Industrial Co., Ltd. Cathode ray tube apparatus preventing distortion of image caused by variation of luminance

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