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:
Apr. 22, 1996
Applicant:
Inventors:
Takashi Oshiyama, Fujisawa, JP;
Masahiko Shinomura, Machida, JP;
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04K / ;
U.S. Cl.
CPC ...
395186 ;
Abstract
According to the present invention, illegal invasion (i.e., access to secret data) from an installed PC card of an information processing apparatus can be appropriately prevented. When an operating mode enters a security mode, a personal computer performs a pseudo operation as though a device were not installed therein, regardless of whether the device is actually installed. During the security mode, therefore, power is not supplied to the installed device so that it does not become active. During this mode, the information processing apparatus can not exchange data with the installed device.