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:
Feb. 06, 1996
Filed:
Mar. 21, 1994
Kenji Kawahara, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An image compressing apparatus has a predictive coding unit, an orthogonal transform unit, a quantization unit, a variable length coding unit, a coding control unit and a start decision unit. The start decision unit receives predictive errors from the predictive coding unit and a quantization parameter from the coding control unit to produce a start control signal. The start control signal is set to a logic value 1 if the orthogonal transform unit, the quantization unit and the variable length coding unit are to be activated, and to a logic value 0 if they are not to be activated. The orthogonal transform unit, the quantization unit and the variable length coding unit are activated with the logic value 1 to perform respective processes, and are kept unactivated with the logic value 0. The image compressing apparatus is low in power dissipation and short in processing time.