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. 31, 1993
Filed:
Aug. 29, 1991
Hiroshi Fujiwara, Tokyo, JP;
Hiroo Uwabu, Tokyo, JP;
Masanori Maruyama, Tokyo, JP;
Eiji Kakii, Tokyo, JP;
Graphics Communication Technologies Ltd., Tokyo, JP;
Abstract
An image signal encoding apparatus having a control means for detecting a degree of redundancy of an inputted image signal and for conducting frame skip control based on a frame skip number determination and a determined skip number, an encoding processing means for processing a frame signal indicated by a transmission from said control means by block units into which a screen is divided, quantizing this signal, and encoding and outputting this signal through the medium of a transmission buffer, and a step size control means for controlling the step size of the quantization, characterized in that the step size control means comprises a correction buffer amount calculation means, which calculates a correction buffer amount indicating an excess in the transmission buffer from the frame skip number and a previously supplied transmission speed, and a step size calculation means, which outputs a quantization step size which is smaller as the correction buffer amount indicates a larger excess of the transmission buffer.