(12) United States Patent ao) Patent No.: Us 7,302,567 B2
Hearn et al. (45) Date of Patent: Nov. 27,2007
(58) Field of Classification Search 713/166 167;
See application file for complete search history.
(56) References Cited
U.S. PATENT DOCUMENTS
5,363,446 A 11/1994 Ruppertz et al.
5,537,544 A 7/1996 Morisawa et al.
5,796,941 A * 8/1998 Lita 726/29
2002/0152395 Al * 10/2002 Zhang et al 713/200
2002/0198748 Al * 12/2002 Eden et al 705/7
* cited by examiner
Primary Examiner—Gilberto Barron, Jr.
Assistant Examiner—Venkat Perungavoor
(74) Attorney, Agent, or Firm—Schiff Hardin LLP
A technical facility has a computer with service software stored therein that has first, second and third service modules. The first service module has a first service routine or a first group of service routines that is available to an operator of the technical facility without a training for application of the first service routine or the first group of service routines. The second service module has a second service routine or a second group of service routines that is available to the operator only after a training. The third service module has a third service routine or a third group of service routines that is denied to the operator.
14 Claims, 2 Drawing Sheets