Patent Document ID: 10063858
Application ID: 15880837
Patent Status: 1

Claim One:
1. A decoder for decoding a video encoded in a data stream, wherein the video is predictively decoded by motion compensated prediction using motion vectors and motion vector differences, the decoder comprising: an entropy decoder configured to, for horizontal and vertical components of each of the motion vector differences, obtain, from the data stream, fixed-length binary codes and an Exp-Golomb code, wherein each of the fixed-length binary codes indicates whether an absolute value of a motion vector difference is greater than a fixed value corresponding to the respective fixed-length binary code, decode each of the fixed-length binary codes using context-adaptive binary entropy decoding with exactly one context associated with the respective fixed-length binary code, wherein the context is shared by the horizontal and vertical components of the motion vector difference, and decode the Exp-Golomb code using a bypass mode, to obtain the horizontal and vertical components of the motion vector difference; and a reconstructor configured to reconstruct the video based on the horizontal and vertical components of the motion vector differences.