Google Inc.

On2 Technologies, Inc.

Tim Murphy

Yaowu Xu

Paul Gordon Wilkins

James Bankoski

Adrian Grange

Eric Ameres

Disclosed herein is a method for decoding a video signal having at least one frame with a plurality of blocks including a current block, including generating, for at least a selected pixel in the current block, a predicted value for at least one pixel located in a row i and a column j of the current block using a processor and according to the following equation: X=L+A&#x2212;C; wherein Xis the predicted value, Lis the value of a pixel to the left of the current block, Ais the value of a pixel in a row above the current block and C is the value of a pixel in the row above and the column to the left of the current block and decoding the current block using the predicted value.

Video compression and encoding method

A method of compressing video data having at least one frame having at least one block and each block having an array of pixels is provided. The method transforms the pixels of each block into coefficients and creates an optimal transmission order of the coefficients. The method also optimizes the speed of processing compressed video data by partitioning the data bitstream and coding each partition independently. The method also predicts fractional pixel motion by selecting an interpolation method for each given plurality or block of pixels depending upon at least one metric related to each given block and varies the method from block to block. The method also enhances error recovery for a current frame using a frame prior to the frame immediately before the current frame as the only reference frame for lessening quality loss during data transmission. Enhanced motion vector coding is also provided.

Disclosed herein is a method for encoding at least one video frame having a plurality of blocks including a current block, including determining motion vectors for each of at least some of blocks surrounding the current block, identifying surrounding blocks having that have the same motion vector and assigning the identified surrounding blocks to a plurality of groups, determining a number of blocks in at least two of the plurality of groups and selecting a motion vector to encode the current block based on the determined number of blocks in the at least two groups.

Disclosed herein is a method for encoding a video signal having at least one frame with a plurality of blocks including a current block, including generating, for at least a selected pixel in the current block, a predicted value for at least one pixel located in a row i and a column j of the current block using a processor and according to the following equation: X=L+A&#x2212;C; wherein Xis the predicted value, Lis the value of a pixel to the left of the current block, Ais the value of a pixel in a row above the current block and C is the value of a pixel in the row above and the column to the left of the current block and encoding the current block using the predicted value.

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New York, NY, United States of America

Tim Murphy