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:
May. 03, 1988
Filed:
Nov. 17, 1986
Shin Tsuda, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention is intended to binary process an image signal obtained by scanning image data by a plurality of threshold levels and to two-dimensionally encode a plurality of binary outputs derived in this way, thereby to telegraph-transmit an image at intermediate gradient. Then, by adopting the encoding by the Modified Read method which has a K parameter value coresponding to the number of such threshold levels, the intermediate gradient image can be telegraph-transmitted efficiently at a high speed. Furthermore, by merely increasing the threshold levels, the image at a variety of intermediate gradients of four, eight or sixteen values, or the like can be telegraph-transmitted and recorded, so that a degree of freedom is designing the apparatus is raised.