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. 12, 1997
Filed:
May. 13, 1992
Applicant:
Inventors:
Yoshitsugu Iwabuchi, Tokyo, JP;
Kenichi Nagasawa, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
382248 ; 382250 ; 382251 ; 358432 ; 358433 ;
Abstract
In an encoder/decoder, a quantizer quantizes input image information, and a coefficient generator generates coefficient information for determining quantization steps of the quantizer. An encoder variable length encodes the quantized image information, and a divider divides the quantized image information into a plurality of blocks. The coefficient information is attached to each of the plurality of blocks for transmission to a decoder.