Computer with security function and method therefor

Details Computer with security function and method therefor Computer with security function and method therefor

2006-04-04

2006-04-04

Barrón, Jr., Gilberto (Department: 2132)

Information security

Protection of hardware

C726S036000

Reexamination Certificate

active

07024700

ABSTRACT:
When the computer is powered on, a POST program is executed, and in the setting for enabling a security function, an RFID chip33makes Removal Detect Enable a high level and outputs it to the control side of an analog switch67and one input of a NAND element63. The removal of an RF antenna37causes a first short-circuit element36to be disconnected for shutting off a terminal71and a terminal73, and an INTR signal for prohibiting the keyboard input is outputted by the high-level signal of the element63to prohibit access to the computer. If the RF antenna is removed while the power is off, the analog switch67is disconnected and the power supplied from a lithium battery to a CMOS memory50is shut off, whereby access to the computer can be prohibited.

REFERENCES:
patent: 5467469 (1995-11-01), Saito et al.
patent: 5590376 (1996-12-01), Kou
patent: 5936527 (1999-08-01), Isaacman et al.
patent: 6038320 (2000-03-01), Miller

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