| 摘要 |
PURPOSE: A trick play embodying method using a frame index is provided to normally embody trick play in an embedded system with low CPU specification like a set-top box. CONSTITUTION: An input image is encoded by an MPEG(Moving Picture Experts Group) frame, and an MPEG file is generated(60). The generated MPEG file is stored in a storage device(70). An index file including frame information about each MPEG frame and position information of the MPEG frame is generated(60), and the generated index file is stored in the storage device(70). The selected one MPEG file is decoded, and the decoded MPEG file is outputted to an external device. A stream decoding speed for obtaining a trick play reproducing speed and the skip number of I frames are set up in response to a trick play command inputted while the MPEG file is decoded(80). The nearest I frame of a currently decoding position is searched from the index file, and I frames are selectively reproduced while the I frames skip by the set skip number of the I frames(90). The reproduced I frames are decoded at the set decoding speed, and the decoded I frames are outputted to the external device(100).
|
