Back to results
US 5,225,904 AGranted
Adaptive digital video compression system
AssigneeIntel Corporation
InventorsStuart J. Golin, Allen H. Simon, Brian Astle, John M. Keith
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeIntel Corporation
InventorsStuart J. Golin, Allen H. Simon, Brian Astle, John M. Keith
Estimating the term…
A full motion color digital video signal is compressed, formatted for transmission, recorded on compact disc media and decoded at conventional video frame rates. During compression, regions of a frame are individually analyzed to select optimum fill coding methods specific to each region. Region decoding time estimates are made to optimize compression thresholds. Region descriptive codes conveying the size and locations of the regions are grouped together in a first segment of a data stream. Region fill codes conveying pixel amplitude indications for the regions are grouped together according to fill code type and placed in other segments of the data stream. The data stream segments are individually variable length coded according to their respective statistical distributions and formatted to form data frames. The number of bytes per frame is dithered by the addition of auxiliary data determined by a reverse frame sequence analysis to provide an average number selected to minimize pauses of the compact disc during playback thereby avoiding unpredictable seek mode latency periods characteristic of compact discs. A decoder includes a variable length decoder responsive to statistical information in the code stream for separately variable length decoding individual segments of the data stream. Region location data is derived from region descriptive data and applied with region fill codes to a plurality of region specific decoders selected by detection of the fill code type (e.g., relative, absolute, dyad and DPCM) and decoded region pixels are stored in a bit map for subsequent display.
A method of encoding a digital motion video signal having data parameters for representing images of a sequence of images formed of pixels, said signal representing a current image being encoded and at least one previous image, each image having horizontal and vertical coordinates for indicating corresponding locations within said images, comprising the steps of:
A method of encoding a digital motion video signal having data parameters for representing a sequence of images having a current image being encoded and at least one previous image, each image having corresponding horizontal and vertical coordinates, comprising the steps of:
A method of encoding a digital motion video signal having data parameters for representing an image having at least two split directions, comprising the steps of:
A method of encoding a digital motion video signal having rows and columns formed of pixels for representing an image having at least first and second split directions, each pixel having at least one pixel data parameter, comprising the steps of:
Dependencies are inferred from the claim text.