Electrical computers and digital processing systems: support – System access control based on user identification by... – Using record or token
Reexamination Certificate
2006-01-17
2006-01-17
Caldwell, Andrew (Department: 2137)
Electrical computers and digital processing systems: support
System access control based on user identification by...
Using record or token
C714S758000
Reexamination Certificate
active
06988203
ABSTRACT:
An extension of the industry standard Wiegand protocol for enabling two way extended communication, enhanced error detection, encryption, multiple reader capability, and enhanced information regarding the embedded data stream between a Wiegand device such as a card reader and a control panel on the existing 5-wire bus structure without requiring the modification to the existing infrastructure.
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Davis Michael
Hulusi Tam
Barkume, P.C. Anthony R.
Caldwell Andrew
Honeywell International , Inc.
Popham Jeffrey
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