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:
Aug. 20, 2002
Filed:
Dec. 04, 1998
Applicant:
Inventor:
Kei Kudou, Hadano, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 1/66 ;
U.S. Cl.
CPC ...
H04B 1/66 ;
Abstract
In order to prevent a deterioration in reproduction quality of a moving picture, which is caused by a difference in data transfer rate for each frame of the moving picture data, when compressing the picture data, a bit rate of the compressed data is predicted, thus deriving a prediction value of the data transfer rate after the compression. The compression is performed by modifying the picture so that the prediction value falls within a range which is suitable for a data transfer rate set in advance. The modification of the picture data is performed by writing a pattern for the adjustment into frames of the original picture.