Method and apparatus for trusted keyboard scanning

Details Method and apparatus for trusted keyboard scanning Method and apparatus for trusted keyboard scanning

Filed on

2006-12-05

Date issued

2006-12-05

Examiner

Hofsass, Jeffery (Department: 2612)

Patent Class

Coded data generation or conversion

SubClass

Bodily actuated code generator

SubSubClass

Including keyboard or keypad

Other Related Categories

C341S022000, C711S163000, C726S004000, C726S022000

Type

Reexamination Certificate

Status

active

Patent number

07145481

Description

ABSTRACT:
A keyboard scan engine integrated on a chipset to initiate a keyscan process. The keyboard scan engine detects a key depression. When in a trusted mode, the keyboard scan engine transmits a key code, corresponding to the key depression, through a trusted internal bus interface. When in a non-trusted mode, the keyboard scan engine transmits the key code through an interface to be processed by an onboard keyboard controller.

REFERENCES:
patent: 5748888 (1998-05-01), Angelo et al.
patent: 6725318 (2004-04-01), Sherman et al.
patent: 2002/0166055 (2002-11-01), Challener et al.
patent: 0 843 250 (1998-05-01), None
patent: 1 286 242 (2003-02-01), None
patent: PCT/US2004/032457 (2005-01-01), None

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