Vixs Systems, Inc.

Gang Qiu

Edward Hong

Avinash Ramachandran

Xinghai Li

Xu Gang (Wilf) Zhao

Xu Gang Zhao

Yinxia (Michael) Yang

Avinash Vilayanur Ramachandran

A motion compensation module can be used in a video encoder for encoding a video input signal that includes a sequence of images that are segmented into a plurality of macroblocks. The motion compensation module includes a motion search module that generates a motion search motion vector for a plurality of subblocks for a plurality of partitionings of a macroblock of a plurality of macroblocks and generates a selected group of the plurality of partitionings based on a group selection signal. A motion refinement module&#x2014;generates a refined motion vector for the plurality of subblocks for the selected group of the plurality of partitionings of the macroblock of the plurality of macroblocks, based on the motion search motion vector for each of the plurality of subblocks of the macroblock of the plurality of macroblocks.

Motion refinement engine with selectable partitionings for use in video encoding and methods for use therewith

A motion refinement engine can be used in a video encoder for encoding a video input signal that includes a sequence of images that are segmented into a plurality of macroblocks. The motion refinement engine includes a motion search module, that generates at least one motion search motion vector for a macroblock of the plurality of macroblocks based on a first plurality of directions. A motion refinement module generates at least one refined motion vector for the macroblock of the plurality of macroblocks, based on a second plurality of directions, wherein the second plurality of directions differ from the first plurality of directions. In a further embodiment, motion search, motion refinement, and motion compensation are selectively performed in a single pass.

Motion refinement engine with flexible direction processing and methods for use therewith

A motion compensation module can be used in a video encoder for encoding a video input signal that includes a sequence of images that are segmented into a plurality of macroblocks. The motion compensation module includes a shared memory and a motion search module that generates a motion search motion vector for a plurality of subblocks for a plurality of partitionings of a macroblock of a plurality of macroblocks and generates a selected group of the plurality of partitionings and stores the selected group of partitionings and the corresponding motion search motion vectors in the shared memory. A motion refinement module retrieves the selected group of partitionings and the corresponding motion search motion vectors from the shared memory, that generates a refined motion vector for the plurality of subblocks for the selected group of the plurality of partitionings of the macroblock of the plurality of macroblocks, based on the motion search motion vector for each of the plurality of subblocks of the macroblock of the plurality of macroblocks.

Motion refinement engine with shared memory for use in video encoding and methods for use therewith

A motion compensation module can be used in a video encoder for encoding a video input signal. The motion compensation module includes a neighbor management module that generates and stores neighbor data for at least one macroblock of the plurality of macroblocks for retrieval for retrieval by at least one of a motion search module, a motion refinement module, a direct mode module, and an intra-prediction module, when operating on at least one neighboring macroblock of the plurality of macroblocks.

Neighbor management module for use in video encoding and methods for use therewith

A motion compensation module, that can be used in a video encoder for encoding a video input signal, includes a motion search module that generates a motion search motion vector for each macroblock of a plurality of macroblocks by contemporaneously evaluating a top frame macroblock and bottom frame macroblock from a frame of the video input signal and a top field macroblock and a bottom field macroblock from corresponding fields of the video input signal. A motion refinement module, when enabled, generates a refined motion vector for each macroblock of the plurality of macroblocks, based on the motion search motion vector.

Motion search module with field and frame processing and methods for use therewith

A motion compensation module, that can be used in a video encoder for encoding a video input signal, includes a motion search module that generates a motion search motion vector for each motion search macroblock of a plurality of motion search macroblocks in at least one of a horizontally compressed and vertically uncompressed field of the video input signal and a horizontally compressed and vertically uncompressed frame of the video input signal. A motion refinement module generates a refined motion vector for each motion refinement macroblock of a plurality of macroblocks of at least one of an uncompressed field of the video input signal and an uncompressed frame of the video input signal, based on the motion search motion vector.

Motion search module with horizontal compression preprocessing and methods for use therewith

A motion compensation module can be used in a video encoder for encoding a video input signal that includes a sequence of images that are segmented into a plurality of macroblocks. The motion compensation module includes a motion search module, that generates a motion search motion vector for a plurality of subblocks for a plurality of partitionings of a macroblock of a plurality of macroblocks. A motion refinement module generates a refined motion vector for the plurality of subblocks for the plurality of partitionings of the macroblock of the plurality of macroblocks, based on the motion search motion vector for each of the plurality of subblocks of the macroblock of the plurality of macroblocks. The motion search module and the motion refinement module can operate in a plurality of selected modes including a first mode corresponding to a first compression standard, a second mode corresponding to a second compression standard and a third mode corresponding to a third compression standard, and wherein the plurality of partitionings are based on the selected mode.

Motion refinement engine for use in video encoding in accordance with a plurality of compression standards and methods for use therewith

A motion compensation module can be used in a video encoder for encoding a video input signal that includes a sequence of images that are segmented into a plurality of macroblocks. The motion compensation module includes a motion search module, that generates a motion search motion vector for a plurality of subblocks for a plurality of partitionings of a macroblock of a plurality of macroblocks based on a sum of accumulated differences (SAD) cost. A motion refinement module, when enabled, generates a refined motion vector for the plurality of subblocks for the plurality of partitionings of the macroblock of the plurality of macroblocks, based on the motion search motion vector for each of the plurality of subblocks of the macroblock of the plurality of macroblocks and based on a sum of accumulated transform differences (SATD) cost. A mode decision module operates on either SAD costs or SATD costs, based on whether the refinement module is enabled or disabled.

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Richmond Hill, Canada

Gang Qiu