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. 13, 1990
Filed:
Dec. 16, 1986
Applicant:
Inventor:
Kenzo Sakakibara, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
235375 ; 235436 ; 235441 ; 379144 ; 382-2 ;
Abstract
A data communication apparatus having a data transmitting portion, a data receiving portion, a detachable memory device such as an IC card or optical card in which received items of data are memorized, and a controller for controlling the process of transmitting and receiving data. In the memory device is set identification codes for identifying the receiver in a confidential communication process. The form of data transmitted by this apparatus is preliminarily converted in accordance with the function of the other party's apparatus.