G - Physics – 06 – F
Patent
G - Physics
06
F
342/11, 342/11.1
G06F 1/00 (2006.01) G05B 15/00 (2006.01) G05B 19/02 (2006.01) G06F 21/00 (2006.01) G07C 9/00 (2006.01) G08B 13/00 (2006.01) G08B 13/14 (2006.01)
Patent
CA 1211542
ABSTRACT OF THE DISCLOSURE A lock-out security arrangement for and method of maintaining microprocessor-controlled electronic equipment normally operational until the occurrence of a disabling event, such as physical removal of the equipment from its normal installation, and/or electrical removal of the equip- ment from a source of electrical power, and thereupon for disabling the equipment after detecting the disabling event and for maintaining the equipment disabled, even after the disabling event has been discontinued, until a code manually entered via a keyboard associated with a micro- processor for controlling the normal operation of the equip- ment matches a private access code whose identity is pro- tected from external interrogation by reason of being stored in an internal non-volatile memory of the microprocessor. The private access code is preferably selected by and known only to the user, and may be changed to a different private access code at the user's option.
469299
International Electronic Technology Corporation
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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