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:
Jan. 27, 1998
Filed:
May. 20, 1996
Richard A Dayan, Wake Forest, NC (US);
Joseph P McGovern, Apex, NC (US);
Palmer E Newman, Apex, NC (US);
International Business Machines Corp., Armonk, NY (US);
Abstract
A personal computer system has security features enabling control over access to data retained in such system. The system cooperates with a transmitter of radiation having a predefined characteristic. A radiation detector within the system detects such radiation and produces an alarm signal when detection fails or is lost. The alarm signal is retained and triggers security logic cooperating with power-on-sequence logic to prevent the system from becoming operative. It is preferred to also provide an erasable memory element that when switched to an active state stores a privileged-access password. Logic is provided to cooperate with such element and override the security logic when the correct password is input to the system. As an added security feature the transmitter may be deactivated if an intrusion is detected at the site to shut down all systems responding to the radiation in the security zone.