The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 2011
Filed:
Mar. 06, 2006
Yusuke Yatabe, Yokohma, JP;
Hironori Komi, Tokyo, JP;
Yusuke Yatabe, Yokohma, JP;
Hironori Komi, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a transcoder that decodes and encodes a motion picture stream, a highly compressed motion picture stream cannot be obtained if the same corresponding frame is referenced for coding purposes in a situation where an intraframe coding mode, in which an unconverted stream is not provided with vector information, is used and in a situation where an interframe predictive coding mode, in which the unconverted stream is provided with vector information, is used. Further, if an additional frame is referenced after searching for the corresponding frame, the circuit scale and power consumption increase. To solve the above problems, the disclosed transcoder comprises a decoder for decoding an input motion picture stream and detecting sub-information indicating whether an intraframe coding scheme or interframe predictive coding scheme is used; and an encoder for changing the frame to be referenced at the time of coding depending on whether the sub-information indicates the use of the intraframe coding scheme or interframe predictive coding scheme.