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US 4,538,027 AGranted
System for inputting a security code to a computer
AssigneeRCA Corporation
InventorCraig E. Deyer
Life of this patent
Estimating the term…
Abstract
A system for providing a security code to a computer includes security bit input logic for each bit of the security code. The input logic includes a plurality of output lines whereby the security bit can be provided on any combination of the output lines selected. Output line selection logic selects the output line over which the bit is provided. The input logic is sequentially scanned whereby the security bits are sequentially provided to the computer.
Claims9
A system for inputting a multi-bit security code to a computer comprising:
- a plurality of security bit input means for individually providing the bits of said security code, each of said security bit input means having a plurality of common output lines, said security bit input means also including output line selection means for selecting the output lines upon which said security bits are provided;
- and
- means for sequentially actuating said security bit input means whereby said security bits are sequentially provided to said computer.
Dependencies are inferred from the claim text.