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. 29, 2000
Filed:
Jun. 14, 1995
Kazutoshi Shimada, Yokosuka, JP;
Eisaku Tatsumi, Kawasaki, JP;
Shigeki Mori, Koshigaya, JP;
Kazuhiro Matsubayashi, Yokohama, JP;
Shinichi Sunakawa, Kawasaki, JP;
Takashi Harada, Yokohama, JP;
Katsuhiko Nagasaki, Ichikawa, JP;
Ryoji Fukuda, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image information transmitting/receiving apparatus for time and cost-saving repetitive transmission. In facsimile communication, image data where further information is added to previously-transmitted image data is often received. In the present apparatus, the original image data is stored, and only difference data from the original image data is transmitted, thus the whole image can be reproduced at the receiving side, using the received difference data. Upon transmitting the difference image information, identification information identifying the difference image information is added to the difference information, and the entire image data to be received by the receiving side is stored. Upon receiving the difference image information, the received difference information is combined with the stored image data, and an image is reproduced based on the combined image data. Further, the image data used for image reproduction is stored as original image data for the next transmission. In this manner, once the original image data is stored, only difference data is sent at each subsequent transmission, thus reducing the amount of transmission data.