Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2005-06-28
2005-06-28
Vo, Tung T. (Department: 2613)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
Reexamination Certificate
active
06912253
ABSTRACT:
A transcoding apparatus converts first coded data obtained from a plurality of frames forming a video image by means of a coding algorithms including an interframe prediction coding algorithm with motion compensation into second coded data having a different structure. More specifically, the transcoding apparatus takes a portion of frames which have had the interframe prediction coding and are included in the plurality of frames forming the video image as processing object frames, and from at least the first coded data corresponding to the processing object frames, generates the second coded data corresponding to coded data which are to be obtained when performing the interframe prediction coding on the processing object frames with reference to second reference frames which are different from first reference frames referenced in the interframe prediction coding of the processing object frames. In order to the second coded data, the transcoding apparatus has a motion information calculating portion for calculating motion information to be included in the second coded data using at least motion information contained in said processing object data.
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Li Han
Miki Toshio
Ogiri Yasuhiro
Brinks Hofer Gilson & Lione
NTT DoCoMo Inc.
Vo Tung T.
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