Postal security device with computer keyboard interface

Details Postal security device with computer keyboard interface Postal security device with computer keyboard interface

1997-12-30

2000-05-30

Wu, Xiao

Computer graphics processing and selective visual display system

Display peripheral interface input device

Including keyboard

380 21, 705410, G09G 500

Patent

active

060696168

ABSTRACT:
An system for interfacing a PSD to a computer is provided. The system includes a splitter that receives signals from a keyboard associated with the computer, and distributes those signals to both the computer and a keyboard monitoring circuit. The keyboard monitoring circuit converts the keyboard signals into keystroke information which is provided to the security controller in the PSD. Portions of the interface circuitry may be combined into the same housing as the PSD.

REFERENCES:
patent: 5111030 (1992-05-01), Brasington et al.
patent: 5396267 (1995-03-01), Bouton
patent: 5590198 (1996-12-01), Lee et al.
patent: 5600562 (1997-02-01), Guenther
patent: 5731980 (1998-03-01), Dolan et al.
patent: 5812666 (1998-09-01), Baker et al.
patent: 5812991 (1998-09-01), Kara
patent: 5890818 (1999-04-01), Sansone
patent: 5978781 (1999-11-01), Sansone
United States Postal Service, Information Based Indicia Program Postal Security Device Specification, Jun. 13, 1996.

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