发明名称 |
Transcoder and imaging apparatus for converting an encoding system of video signal |
摘要 |
The time required to transcode an encoded image signal to an image signal encoded by a different encoding method is reduced. Disclosed herein is a transcoder comprising: picture selector 4 which extracts specific types of pictures (I- and P-pictures) from a first image signal (MPEG2 stream) and generates a subset of the first image signal; a first decoder 5 which decodes the subset image signal; and a first encoder 7 which encodes the decoded image signal to a second image signal (MPEG4 stream). The picture selector 4 uses the extracted pictures to generate the subset image signal with a reduced effective length.
|
申请公布号 |
US8355439(B2) |
申请公布日期 |
2013.01.15 |
申请号 |
US20100839540 |
申请日期 |
2010.07.20 |
申请人 |
HITACHI, LTD.;YOSHIDA DAISUKE;KOMI HIRONORI;YATABE YUSUKE |
发明人 |
YOSHIDA DAISUKE;KOMI HIRONORI;YATABE YUSUKE |
分类号 |
H04N7/12;H04N7/32;H03M7/30;H04B1/66;H04N5/765;H04N5/77;H04N5/85;H04N7/26;H04N7/46;H04N7/50;H04N9/804;H04N11/02;H04N11/04 |
主分类号 |
H04N7/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|