Device and method for controlling access to computer...

Details Device and method for controlling access to computer... Device and method for controlling access to computer...

2005-05-24

2005-05-24

Gaffin, Jeffrey (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output addressing

C710S015000, C710S062000

Reexamination Certificate

active

06898643

ABSTRACT:
The invention concerns the sharing and the controlling of access to at least one peripheral for a computer system which includes a central processing unit and at the least one peripheral which has a physical interface to the central processing unit. Specifically, a request for access is received at an address of a virtual interface, where the address of the virtual interface corresponds to the physical interface, and data is exchanged between the central processing unit and the at least one peripheral is received. The received data is modified according to at least one predetermined criterion corresponding to the address of the virtual interface.

REFERENCES:
patent: 5444853 (1995-08-01), Lentz
patent: 5659798 (1997-08-01), Blumrich et al.
patent: 5815647 (1998-09-01), Buckland
patent: 5915124 (1999-06-01), Morris
patent: 5991275 (1999-11-01), Abiven et al.
patent: 6122267 (2000-09-01), Abiven et al.
patent: 6195720 (2001-02-01), Abiven et al.
patent: 0 689 146 (1995-12-01), None

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