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. 22, 2013
Filed:
Dec. 20, 2010
Junichi Odagiri, Kawasaki, JP;
Junichi Odagiri, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A compression device using a prediction coding method performs a prediction for one line in an image to be compressed by using each of a plurality of the same types of predictors as plural types of predictors, and determines one quantizer out of plural types of quantizers based on a prediction error amount of a predictor having the smallest prediction error. It also performs a prediction for a prescribed pixel block in the one line, and identifies one predictor out of the plural types of predictors based on a type of a predictor having the smallest prediction error. Then, it compresses data of the prescribed pixel block by using the identified predictor and the determined quantizer. A decompression device decompresses the compressed image data to generate the image to be compressed by using an inverse quantizer corresponding to the determined quantizer and the identified predictor.