Method and apparatus for reproducing encoded data

Details Method and apparatus for reproducing encoded data Method and apparatus for reproducing encoded data

H - Electricity

04

N

H04N 7/50 (2006.01) G11B 20/10 (2006.01) G11B 27/10 (2006.01) H04N 9/877 (2006.01) H04N 5/783 (2006.01) H04N 5/85 (2006.01) H04N 9/804 (2006.01)

Patent

CA 2168416

A method and apparatus for reproducing data compressed in accordance with a motion picture experts group (MPEG) standard and recorded on a recording medium. The data represents a plurality of frames which correspond to a plurality of groups of pictures (GOPs), in which each of the GOPs includes different types of pictures including intraframe predictively (I) encoded and interframe predictively (P) encoded pictures. The compressed data is read from the recording medium, and the type of pictures corresponding to the read data is determined. The read image data is decoded and supplied to a display device. When special processing (such as, random accessing) is performed, image data may not be properly decoded during an initial period. During this time period, an auxiliary signal may be supplied to the display device. Such supply of the auxilliary signal continues until image data corresponding to an intraframe predictively encoded (I) picture and either another intraframe predictively encoded (I) picture or an interframe predictively encoded (P) picture are detected, whereupon the respective image data is properly decoded by utilizing the image data corresponding to the detected P and/or I pictures and supplied to the display device instead of the auxiliary signal.

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