Communications: electrical – Continuously variable indicating – With meter reading
Patent
1993-07-12
1995-07-18
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
34082531, 380 4, G07D 700
Patent
active
054345626
ABSTRACT:
One or more user accessible switches are provided by which the authorized user may fully or partially limit the computer's access to one or more of its peripheral devices. The switch inhibits power or control lines to the peripheral device, or enables the programming of access limits to the peripheral device, in a manner which cannot be overridden by the computer. This added level of control allows the user to control the computer's activities so that access to these peripheral devices is allowed only under secure conditions, so as to preclude alteration or destruction of data by unauthorized users or computer viruses. Methods are disclosed by which the switches can render peripheral devices totally inactive, or made to be temporarily read-only, write-only, or write-once in order to implement a number or security protocols for single or multi-user environments.
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patent: 4975950 (1990-12-01), Lentz
patent: 5012514 (1991-04-01), Renton
patent: 5144659 (1992-09-01), Jones
patent: 5144660 (1992-09-01), Rose
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Miller Gregg V.
Yusko Donald J.
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