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:
Jan. 15, 2013
Filed:
Jul. 20, 2010
Applicants:
Daisuke Yoshida, Yokohama, JP;
Hironori Komi, Tokyo, JP;
Yusuke Yatabe, Yokohama, JP;
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 7/12 (2006.01); H04N 11/02 (2006.01); H04N 11/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
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 selectorwhich 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 decoderwhich decodes the subset image signal; and a first encoderwhich encodes the decoded image signal to a second image signal (MPEG4 stream). The picture selectoruses the extracted pictures to generate the subset image signal with a reduced effective length.