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:
Apr. 04, 2006
Filed:
Jul. 19, 2000
Hideto Horikoshi, Sagamihara, JP;
Mitsuhiro Yamazaki, Aoba-ku, JP;
Jun Tanaka, Zama, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
When the computer is powered on, a POST program is executed, and in the setting for enabling a security function, an RFID chipmakes Removal Detect Enable a high level and outputs it to the control side of an analog switchand one input of a NAND element. The removal of an RF antennacauses a first short-circuit elementto be disconnected for shutting off a terminaland a terminal, and an INTR signal for prohibiting the keyboard input is outputted by the high-level signal of the elementto prohibit access to the computer. If the RF antenna is removed while the power is off, the analog switchis disconnected and the power supplied from a lithium battery to a CMOS memoryis shut off, whereby access to the computer can be prohibited.