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:
Oct. 05, 1993
Filed:
Feb. 03, 1992
Masahiko Enari, Yokohama, JP;
Kenichi Nagasawa, Kawasaki, JP;
Akihiro Shikakura, Kawasaki, JP;
Yuushi Kaneko, Yokohama, JP;
Yoshifumi Satake, Yokohama, JP;
Hiroshi Takizawa, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In an image encoding apparatus, conversion data obtained by converting image information onto a frequency region, and corresponding to several frames, are parallelly output using a one-frame-period delay circuit. The parallelly output conversion data are quantized by a quantization circuit, and the amount of data to be obtained when the quantized data are encoded is determined by a variable-length coding circuit. The data amount information is input to a coefficient operation circuit for determining a quantization step for use in the next stage. Conversion data quantized according to an output from the coefficient operation circuit are encoded, and the encoded data are output.