Method and system for performing real-time operation

Details Method and system for performing real-time operation Method and system for performing real-time operation

2004-08-02

2008-12-09

An, Meng-Ai (Department: 2195)

Electrical computers and digital processing systems: virtual mac

Task management or control

C713S375000

Reexamination Certificate

active

07464379

ABSTRACT:
An information processing system performs a real-time operation periodically at specific time intervals. The system includes a unit for performing a scheduling operation of assigning the real-time operation to a processor to perform the real-time operation periodically at the specific time intervals by the processor, a unit for computing a ratio of an execution time of the real-time operation to be performed by the processor at a first operating speed, based on the specific time intervals and cost information concerning a time required to perform the real-time operation by the processor at the first operating speed, and a unit for performing an operating speed control operation to operate the processor at a second operating speed that is lower than the first operating speed, the second operating speed being determined based on the computed ratio.

REFERENCES:
patent: 6430694 (2002-08-01), Hosein et al.
patent: 6513124 (2003-01-01), Furuichi et al.
patent: 2002/0029353 (2002-03-01), Hwang
patent: 2003/0028816 (2003-02-01), Bacon
patent: 2003/0115239 (2003-06-01), Togawa
patent: 2005/0066330 (2005-03-01), Kanai et al.
patent: 1 115 051 (2001-07-01), None
patent: 8-180025 (1996-07-01), None
patent: 10-143380 (1998-05-01), None
patent: 2000-122747 (2000-04-01), None
patent: 2002-215599 (2002-08-01), None
patent: 2003-99148 (2003-04-01), None
patent: 2002-0018309 (2002-03-01), None
U.S. Appl. No. 10/902,938, filed Aug. 2, 2004, Kanai et al.
U.S. Appl. No. 10/935,188, filed Sep. 8, 2004, Kanai et al.
U.S. Appl. No. 10/808,320, filed Mar. 25, 2004, Kanai et al.
U.S. Appl. No. 10/808,470, filed Mar. 25, 2004, Kanai et al.
U.S. Appl. No. 10/808,280, filed Mar. 25, 2004, Kanai et al.
U.S. Appl. No. 10/895,040, filed Jul. 21, 2004, Kanai et al.
U.S. Appl. No. 10/902,938, filed Aug. 2, 2004, Kanai et al.
U.S. Appl. No. 10/935,188, filed Sep. 8, 2004, Kanai et al.
Jiong Luo, et al “Static and Dynamic Variable Voltage Scheduling Algorithms For Real-Time Heterogeneous Distributed Embedded Systems”, Proceedings of the 15thInternational Conference on VLSI Design (VLSID'02) 2002 XP-002447056 pp. 719-726.
Dakai Zhu, et al. “Scheduling with Dynamic Voltage/Speed Adjustment Using Slack Reclamation in Multi-Processor Real-Time Systems” 22ndIEEE Real-Time Systems Symposium, Dec. 2001, XP002447057 pp. 84-94.
Ali Manzak, et al. “Variable Voltage Task Scheduling Algorithms for Minimizing Energy/Power” IEEE transactions on Very Large Scale Intergration (VLSI) Systems. vol. 11 No. 2, Apr. 2003 XP-002447059, pp. 270-276.
Inki Hong, et al. “On-Line Scheduling of Hard Real-Time Tasks on variable Voltage Processor” IEEE/ACM International Conference on Computer-Aided Design, 1998. ICCAD 98. Digest of Technical Papers, Nov. 1998, XP-002447058, pp. 653-656.
Jia Xu, et al. “On Satisfying Timing Constraints in Hard-Real-Time Systems” 8198 IEEE Transactions on Software engineering Jan. 19, 1993, New York, US, vol. 19, No. 1, XP-000359099, pp. 70-84.
Gregory F. Welch “A Survey of Power Management Techniques in Mobile Computing Operating Systems” 8283 Operation Systems Review (SIGOPS) Oct. 1995, vol. 29, No. 4, New York, US, XP 000555162, pp. 47-56.
U.S. Appl. No. 11/232,984, filed Sep. 23, 2005, Maeda et al.
U.S. Appl. No. 11/233,026, filed Sep. 23, 2005, Maeda et al.

Affiliated with

Also associated with

Rating

Method and system for performing real-time operation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system for performing real-time operation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for performing real-time operation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4042728