| US 7,613,381 B2 | ||
| Video data processing method and video data processing apparatus | ||
| Yoshiaki Kusunoki, Tokyo (Japan); and Tsuyoshi Abe, Tokyo (Japan) | ||
| Assigned to Mitsubishi Denki Kabushiki Kaisha, Tokyo (Japan) | ||
| Appl. No. 10/583,276 PCT Filed Sep. 07, 2004, PCT No. PCT/JP2004/012976 § 371(c)(1), (2), (4) Date Jun. 16, 2006, PCT Pub. No. WO2005/062614, PCT Pub. Date Jul. 07, 2005. |
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| Claims priority of application No. 2003-422024 (JP), filed on Dec. 19, 2003. | ||
| Prior Publication US 2007/0140647 A1, Jun. 21, 2007 | ||
| Int. Cl. H04N 5/783 (2006.01) | ||
| U.S. Cl. 386—68 [386/111; 386/52] | 10 Claims |
| 1. A video data processing method that generates a trick play stream with an altered reproducing speed and reproducing direction
from a video stream coded using frame-to-frame prediction, comprising:
a step of selectively extracting intra-frame coded pictures from the video stream, conforming to the speed and direction of
the trick play stream to be reproduced;
an analysis step of analyzing a coding parameter of the extracted intra-frame coded pictures;
a modification step of modifying the coding parameter according to said speed and direction; and
a generating step of generating the trick play stream by generating repeat pictures displaying content identical to the extracted
intra-frame coded pictures and adding the repeat pictures following the intra-frame coded pictures with the modified coding
parameter, the intra-frame coded pictures with the modified coding parameter being selected in their order of data transfer
according to said reproducing speed and reproducing direction.
|