Title:
CATHODE RAY TUBE APPARATUS PREVENTING DISTORTION OF IMAGE CAUSED BY VARIATION OF LUMINANCE
Document Type and Number:
WIPO Patent Application WO/2004/012443
Kind Code:
A1
Abstract:
Distortion of an image caused by variation in the luminance of pixel is eliminated by delivering the output voltage from an AC component extraction circuit (13) for extracting the variation quantity of anode current to a horizontal size control circuit for controlling the strength of horizontal deflection field using a transistor Tr 20, a capacitor C20 and resistors R20-R23, thereby regulating a horizontal deflection current being outputted from a horizontal deflection output circuit (124).
Inventors:
UCHIDA YUKIO (JP)
Application Number:
PCT/JP2003/008636
Publication Date:
February 05, 2004
Filing Date:
July 08, 2003
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
UCHIDA YUKIO (JP)
UCHIDA YUKIO (JP)
International Classes:
H04N3/16; H04N3/223; (IPC1-7): H04N3/23; H04N3/223
Foreign References:
| JPS57118474A | 1982-07-23 | |||
| JPH08139957A | 1996-05-31 | |||
| JPH0320572U | 1991-02-28 | |||
| JPH1056580A | 1998-02-24 | |||
| JPS6397962U | 1988-06-24 | |||
| JPH01316071A | 1989-12-20 | |||
| JPS61142869A | 1986-06-30 | |||
| JPH07154624A | 1995-06-16 |
Attorney, Agent or Firm:
Nakajima, Shiro (2-1 Toyosaki 3-chome, Kita-k, Osaka-shi Osaka, JP)
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