Television – Image signal processing circuitry specific to television – Transition or edge sharpeners
Reexamination Certificate
2005-06-28
2005-06-28
Miller, John (Department: 2614)
Television
Image signal processing circuitry specific to television
Transition or edge sharpeners
C348S625000, C348S627000
Reexamination Certificate
active
06912015
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.
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Copy of European Office Communication including European Search Report for corresponding European Patent Application 02004853 dated Jun. 6, 2002.
Kitahara Toshiaki
Miyata Minoru
Okumura Naoji
Tanaka Kazuto
Terai Katsumi
Armstrong Kratz Quintos Hanson & Brooks, LLP
Matsushita Electric - Industrial Co., Ltd.
Miller John
Tran Trang U.
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