Amlogic Co., Limited

Shi Chen

Xuyun Chen

John A Thodiyil

A method for comparing a target block to a reference window in motion estimation calculations, comprises the steps of: determining SAD calculations as a function of the target block and the reference window; reading the target block into registers; reading a segment of the reference window; updating the determined SAD calculations on the fly as a function of the read target block and the read segment of the reference window; and determining one or more sub-blocks of the reference window having minimum SAD values as a function of the updated SAD calculations; and if one or more of the minimum SAD values are not found, repeating the reading a segment step, the updating step and the determining step for a next segment of the reference window.

Methods for comparing a target block to a reference window for motion estimation during video encoding

A method and apparatus for processing a current macro-block of a current frame for motion compensation based on reference data from a reference frame using a sliding window cache to cache the reference data are disclosed. The method steps comprise processing a current sub-block of the current macro-block for motion compensation, determining the reference data for the current sub-block based on a reference sub-block in the reference frame, determining whether the reference data is within a sliding window, if the reference data is within the sliding window, checking for a valid tag corresponding to the reference data, responsive to the valid tag, retrieving the reference data from within the sliding window cache and processing the reference data for motion compensation.

Method and apparatus for motion compensation reference data caching

A method and apparatus for a multi-core video decoder for decoding a single bitstream are disclosed. The multi-core video decoder comprises a first video decoder configured to receive the bitstream, parse header information to determine buffer management for a plurality decoding jobs based on the header information, and assign decoding jobs based upon the buffer management. A second video decoder configured to receive the bitstream and decode the bitstream based on an assigned decoding job from the first video decoder.

Method and apparatus for multi-core video decoder

A method for encoding motion vectors, comprises the steps of: determining motion vectors and flags for sub-blocks of a macroblock ('MB') as a function of SAD calculations for the MB; generating one or more merged motion vectors for the sub-blocks of the MB as a function of the determined motion vectors and the determined flags; generating a merged macroblock motion vector for the MB as a function of the generated merged motion vectors and of the determined flags; and encoding the determined motion vectors as a function of the generated merged motion vectors and the generated merged macroblock motion vector.

Growing community of inventors

Cupertino, CA, United States of America

Shi Chen