Patent ID: 8428145
Filing Date: 2013-04-23
Classification: G11B,H04N

Abstract:
1. A method for providing trick modes, the method comprising: determining particular frames of a video bitstream that can be skipped to achieve a desired speed of a selected trick mode; selecting specific macroblocks of the particular frames that will not be referred to during decoding of frames of the video bitstream that will be displayed during the selected trick mode; decoding macroblocks of the particular frames without decoding the specific macroblocks of the particular frames to decode the frames of the video bitstream that will be displayed during the selected trick mode; and selecting macroblocks of frames of the video bitstream that can be approximately decoded such that fractional part of a motion vector of a selected macroblock is dropped, chrominance components are not decoded and residual error for the selected block is not decoded.