Methods and apparatus for encoding a digital video signal

Image analysis – Image compression or coding

Reexamination Certificate

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Reexamination Certificate

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07822278

ABSTRACT:
The invention provides a non-intrusive method and apparatus for encoding a digitized raster display signal which may then be transmitted from a host computer system to a remote display across a communications link. Hash codes are used to detect persistent blocks of pixels in a real-time digital raster signal generated by the host computer. A progressive encoding and transmission sequence is then initiated, using parameters such as bandwidth availability and build quality requirements to determine suitable encoding methods and build levels.

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