Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Patent
1993-12-29
1995-02-14
Kostak, Victor R.
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
H04N 5213
Patent
active
053899776
ABSTRACT:
A ghost canceler having an adaptive signal level adjustment function includes an amplifier for amplifying an analog video signal provided to an analog-to-digital converter and a microprocessor for detecting the peak-to-peak value of the input video signal using a level difference between an input ghost cancellation reference signal contained within the analog video signal and a preset ghost cancellation reference signal and for determining an amplification coefficient using the detected peak-to-peak value. The analog-to-digital converter converts the amplified video signal to produce maximum bit resolution, which thereby permits ghost cancellation performance in the ghost canceler to be enhanced and prevent a loss in displayed video quality.
REFERENCES:
patent: 4564862 (1986-01-01), Cohen
patent: 5065242 (1991-11-01), Dieterich
patent: 5121211 (1992-06-01), Koo
patent: 5130799 (1992-07-01), Iga
patent: 5283650 (1994-02-01), Koo
Hsia Sherrie
Kostak Victor R.
Samsung Electronics Co,. Ltd.
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