Transcoder and method of transcoding
AssigneeSamsung Electronics Co., Ltd.
InventorsTae-Hee Kim, Byung-Sun Choi
Life of this patent
Estimating the term…
Abstract
A transcoder and a method of transcoding which reduces computational requirements without picture deterioration. A mode decision unit decides a mode of a scaled output macro block based on an area of the scaled macro block overlapped with a non-scaled macro block of a reference frame and a mode of the overlapped macro block. A motion vector decision unit decides a reference motion vector of the output macro block based on a motion vector with respect to the overlapped macro blocks. A picture quality preference mode selection unit receives a user picture quality preference command. A motion vector compensation unit compensates the motion vector of the output macro block based on the decided reference motion vector and the picture quality preference command.
Claims16
A transcoder comprising:
- a mode decision unit which decides a mode of a macro block of an output bit stream based on an area of a scaled macro block of a current input frame overlapped with non- scaled macro blocks of a reference frame and a mode of the overlapped macro blocks;
- and
- a motion vector decision unit which decides a reference motion vector of the output macro block based on motion vectors of the overlapped macro blocks.
A method of transcoding, comprising:
- deciding a mode of a macro block of an output bit stream based on an area of a scaled macro block of a current input frame overlapped with non scaled macro blocks of a reference frame and a mode of the overlapped macro blocks;
- and
- deciding a reference motion vector of the output macro block based on motion vectors of the overlapped macro blocks.
Dependencies are inferred from the claim text.