Digital video decoder for decoding digital high definition and/or digital standard definition television signals - Patent US5614952(A)
Filed:
Oct 11, 1994
Published:
Mar 25, 1997
Abstract
Methods and apparatus for reducing the complexity of decoder circuitry and video decoder memory requirements are disclosed. The described video decoders are capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used to decode HDTV and/or SDTV pictures. The described video decoder may be used as part of a picture-in-picture decoder circuit for providing picture-in-picture capability without providing multiple full resolution video decoders. The reduction in decoder circuit complexity is achieved through the use of a plurality of data reduction techniques including the use of a preparser, downsampling, and truncating pixel values.Applicants
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HITACHI AMERICA LTD
Inventors
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PEARLSTEIN LARRY
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BOYCE JILL M
Application Number
320481Priority Claims
US32048194Family Members
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