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. 10, 1999
Filed:
Jul. 18, 1997
Applicant:
Inventors:
Yuka Nagai, Kawasaki, JP;
Tadashi Suzuki, Tokyo, JP;
Masanori Sakai, Yokohama, JP;
Eiji Ohara, Kawasaki, JP;
Satoru Kutsuwada, Kawasaki, JP;
Satoshi Kaneko, Kawasaki, JP;
Yoshinori Abe, Tama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
380 49 ; 380 18 ;
Abstract
A communication controller enables connection between different apparatuses while protecting user's original commands and confidential data. The communication controller has a standardized mode and a user's original mode. By preventing connection with an apparatus which does not have a proper access right in advance, and transmitting data while enciphering the data when the user's original mode is executed, internal information is protected, and the secrecy protection property is not reduced.