Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Patent
1997-05-07
1998-05-05
Peng, John K.
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
348 28, 348556, 348696, H04N 520, H04N 546
Patent
active
057482578
ABSTRACT:
A picture information detecting apparatus includes a picture area signal output circuit to detect a picture area excluding black band portions from the input video signal to produce a picture area signal to designate the picture area from which picture information is detected. Also included is a picture information detecting circuit for detecting picture information from the input video signal in the designated area. A picture quality compensating circuit is also provided for compensating the video input signal using the detected picture information to produce the gradation compensated video signal. An EDTV 2 discriminating circuit may also be included to determine if the video input signal is an EDTV 2 signal.
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European Search Report dated 24 May 1995.
Kageyama Atsuhisa
Kawabata Minoru
Matsushita Electric - Industrial Co., Ltd.
Murrell Jeffrey S.
Peng John K.
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