Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Patent
1997-09-19
2000-12-12
Hsia, Sherrie
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
348730, H04N 521
Patent
active
061605913
ABSTRACT:
An apparatus and method for reducing interference on a display screen in an in-flight entertainment system, where the interference results from power conversion by a power regulator that supplies voltage to the display screen, is disclosed. The apparatus comprises a clock generator that provides a video clock signal and a regulator clock signal having a frequency that is a multiple of a frequency of the video clock signal. The apparatus also comprises a video processing circuit coupled to the clock generator that provides video data to the display screen at a rate derived from the video clock signal. A regulator circuit that is coupled to the video processing circuit and to the clock generator, supplies voltage to the video processing circuit at a rate based on the regulator clock signal.
REFERENCES:
patent: 5389968 (1995-02-01), Koyanagi
Sekine Kazutoyo
Stumfall David M.
Hsia Sherrie
Sony Corporation
Sony Trans Com Inc.
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