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Transcoders and methods
   
Document Number
US Patent 7412003
Issued Date
August 12, 2008
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Abstract
Transcoding as from MPEG-2 SDTV to MPEG-4 CIF reuses motion vectors and downsamples in the frequency (DCT) domain with differing treatments of frame-DCT and field-DCT blocks, and alternatively uses de-interlacing IDCT with respect to the row dimension plus deferred column downsampling for reference frame blocks.
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Number of Claims:
3
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Owner
Published
August 12, 2008
Application Number
10/666,981
Filed
September 17, 2003
US Classification
375/240.16   348/402.1
Int'l Classification
H04B   1/66   (20060101)   H04N   11/02   (20060101)   H04N   7/12   (20060101)  
Assistant Examiner
USPTO Field of Search
375/240   375/240.14   375/240.16  
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