The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 2005
Filed:
Jun. 07, 1999
Hideyo Uwabata, Takatsuki, JP;
Katsumi Terai, Higashiosaka, JP;
Minoru Miyata, Suita, JP;
Toshiaki Kitahara, Ibaraki, JP;
Naoji Okumura, Minoo, JP;
Kazuto Tanaka, Otsu, JP;
Hideyo Uwabata, Takatsuki, JP;
Katsumi Terai, Higashiosaka, JP;
Minoru Miyata, Suita, JP;
Toshiaki Kitahara, Ibaraki, JP;
Naoji Okumura, Minoo, JP;
Kazuto Tanaka, Otsu, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
A parallel scanning circuit outputs a parallel scanning signal for making forward and backward scanning lines parallel. A vertical correlation detection circuit detects a portion where the change in luminance in the vertical direction exceeds a predetermined value on the basis of a luminance signal, and outputs a movement control signal representing the distance of movement on the screen of the scanning line. A retrace period reversion circuit reverses the lime axis of the movement control signal in a retrace period. A clamping circuit clamps the movement control signal to a predetermined DC voltage at the timing of horizontal synchronizing signal. A synthesizing circuit synthesizes the parallel scanning signal and the movement control signal, and feeds a synthesized signal as a vertical velocity modulation signal to a vertical velocity modulation coil.