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US 6,552,749 B1Granted
Method and apparatus for video motion compensation, reduction and color formatting
AssigneeIntel Corporation
InventorsMorris E. Jones, Jr., Ying Cui, Chairong Li, Everitt Kwocktong Chock, Zudan Shi
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Abstract
A method and apparatus for video motion compensation, power of two reduction and color format conversion is disclosed. The motion compensation engine performs the MPEG-2 functions of half pel compensation, inverse discrete cosine transform and merge. Dual prime, field-based and frame-based macroblocks are supported. Data reduction may be performed in the vertical direction, the horizontal direction, or both.
Claims35
An integrated circuit, comprising:
- a motion compensator for creating motion compensated data from video blocks and difference data;
- a reducer coupled to said motion compensator for reducing said motion compensated data to create reduced data;
- a color format converter coupled to said reducer for converting the color format of said reduced data to create reformatted data;
- an interface to a first memory;
- a second memory adapted to receive a plurality of a video blocks from said interface, said second memory coupled to said motion compensator;
- a third memory adapted to store difference data corresponding to said video blocks, said third memory coupled to said motion compensator;
- and
- a fourth memory coupled to said color format converter, said reducer and said motion compensator.
5 more elements
A computer system, comprising:
- a bus;
- and
- a video processor coupled to said bus, said video processor comprising:
- an interface to a first memory;
- a second memory adapted to receive a plurality of a video blocks from said interface;
- a third memory adapted to store difference data corresponding to said video blocks;
- a motion compensator coupled to said second memory and said third memory for creating motion compensated data from said video blocks and said difference data;
- a video data reducer coupled to said motion compensator for reducing data to create reduced data, said reducer employing power of two reduction;
- a color format converter coupled to said reducer for converting the color format of said reduced data in YUV 4:2:0 format to create reformatted data in YUV 4:2:2 format;
- and
- a fourth memory coupled to said color format converter, said reducer and said motion compensator for receiving said reformatted data.
8 more elements
A method for manipulating video data, comprising:
- receiving video data;
- formatting said video data into a first block, comprising:
- changing the color format from YUV 4:2:0 to YUV 4:2:2;
- and
- interleaving luminance data and chrominance data;
- performing motion compensation on said first block to create a second block, comprising:
- determining whether said first block is from an “I” frame;
- determining whether said first block is from a “B” frame when said first block is not from an “I” frame;
- performing bidirectional prediction when said first block is from a “B” frame;
- performing half pel compensation when said first block is not from an “I” frame or a “B” frame;
- and
- adding difference data to the result of said half pel compensation;
- performing power of two data reduction on said second block to create a third block;
- reformatting said third block to create a fourth block;
- and storing said fourth block to a memory.
12 more elements
A program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to manipulate video data, comprising:
- a first module comprising code for causing a machine to read video data;
- a second module comprising code for causing a machine to format said video data into a macroblock;
- a third module comprising code for causing a machine to perform motion compensation on said macroblock to create a compensated block, said motion compensation comprising:
- determining whether said macroblock is from an “I” frame;
- determining whether said macroblock is from a “B” frame when the macroblock is not from an “I” frame;
- performing bidirectional prediction when said macroblock is from a “B” frame;
- and
- performing half pel compensation when said macroblock is not from an “I” frame or a “B” frame;
- and
- adding difference data to the result of said half pel compensation;
- a fourth module comprising code for causing a machine to perform power of two data reduction on said compensated block to create a reduced block;
- and
- a fifth module comprising code for causing a machine to reformat said reduced block to create a reformatted block and store said reformatted block to a memory, said reformatting comprising:
- changing the color format from YUV 4:2:0 to YUV 4:2:2;
- and
- interleaving luminance data and chrominance data.
13 more elements
An apparatus for manipulating video data, comprising:
- means for receiving video data;
- means for formatting said video data into a first block, comprising:
- means for changing the color format from YUV 4:2:0 to YUV 4:2:2;
- and
- means for interleaving luminance data and chrominance data;
- means for performing motion compensation on said first block to create a second block, comprising:
- means for determining whether said first block is from an “I” frame;
- means for determining whether said first block is from a “B” frame when said first block is not from an “I” frame;
- means for performing bidirectional prediction when said first block is from a “B” frame;
- means for performing half pel compensation when said first block is not from an “I” frame or a “B” frame;
- and
- means for adding difference data to the result of said half pel compensation;
- means for performing power of two data reduction on said second block to create a third block;
- means for reformatting said third block to create a fourth block;
- and
- means for storing said fourth block to a memory.
13 more elements
An apparatus for manipulating video data, comprising:
- means for receiving video data;
- means for formatting said video data into a first block, comprising:
- changing the color format from YUV 4:2:0 to YUV 4:2:2 and
- interleaving luminance data and chrominance data;
- means for performing motion compensation on said first block to create a second block, comprising:
- means for determining whether said first block is from an “I” frame;
- means for determining whether said first block is from a “B” frame when said first block is not from an “I” frame;
- means for performing bidirectional prediction when said first block is from a “B” frame;
- means for performing half pel compensation when said first block is not from an “I” frame or a “B” frame;
- and
- means for adding difference data to the result of said half pel compensation;
- means for performing power of two data reduction on said second block to create a third block;
- means for reformatting said third block to create a fourth block;
- and
- means for storing said fourth block to a memory.
12 more elements
Dependencies are inferred from the claim text.