Electrical computers and digital processing systems: support – Computer power control – Power conservation
Reexamination Certificate
2004-05-05
2008-10-14
Patel, Nitin C (Department: 2116)
Electrical computers and digital processing systems: support
Computer power control
Power conservation
C713S300000, C713S401000
Reexamination Certificate
active
07437580
ABSTRACT:
Methods and apparatus for implementing a Dynamic Voltage Scaling (DVS) system are presented herein. In one embodiment, an embedded delay checker (EDC) cell is used to measure the actual activity and delay of a critical path within a microprocessor core, which is the basis for dynamically altering the voltage to the core. In another embodiment, a slaved ring oscillator (SRO) cell is placed adjacent to the microprocessor core and is used along with EDC cells to provide redundancy to a DVS system.
REFERENCES:
patent: 5745375 (1998-04-01), Reinhardt et al.
patent: 5781784 (1998-07-01), McKinley
patent: 6157247 (2000-12-01), Abdesselem et al.
patent: 6601177 (2003-07-01), Fujigaya et al.
patent: 6657467 (2003-12-01), Seki et al.
patent: 6657634 (2003-12-01), Sinclair et al.
patent: 6927605 (2005-08-01), Fetzer et al.
patent: 6985025 (2006-01-01), Maksimovic et al.
patent: 7032117 (2006-04-01), Kolinummi et al.
patent: 7061292 (2006-06-01), Maksimovic et al.
patent: 7117378 (2006-10-01), Maksimovic et al.
patent: 7120804 (2006-10-01), Tschanz et al.
patent: 7148755 (2006-12-01), Naffziger et al.
patent: 7265590 (2007-09-01), Seki et al.
patent: 2004/0049703 (2004-03-01), Maksimovic et al.
patent: 2005/0132238 (2005-06-01), Nanja
Burd, T., et al. Design Issues for Dynamic Voltage Scaling. Berkeley Wireless Research Center, University of California Berkeley, pp. 9-14, ISPLD, Aug. 2000.
Burd, T., et al. A Dynamic Voltage Scaled Microprocessor System. IEEE Journal of Solid-State Circuits, Nov. 2000, pp. 1571-1580, vol. 35, No. 11.
Dancy, A., et al. A Reconfigurable Dual Output Low Power Digital PWM Power Converter. Department of EECS, Massachusetts Institute of Technology, Cambridge, pp. 191-196, ISLPED 1998.
Dancy, A., et al. Techniques for Aggressive Supply Voltage Scaling and Efficient Regulation. IEEE 1997 Custom Integrated Circuits Conference. pp. 579-586.
Kim, J., et al. An Efficient Digital Sliding Controller for Adaptive Power-Supply Regulation. IEEE Journal of Solid-State CIrcuits, May 2002, pp. 639-647, vol. 37, No. 5.
Kuroda, T., et al. Variable Supply-Voltage Scheme for Low-Power High-Speed CMOS Digital Design. IEEE Journal of Solid-State Circuits, Mar. 1998, vol. 33, No. 3.
Wei, G., et al. A Fully Digital, Energy-Efficient, Adaptive Power-Supply Regulator. IEEE Journal of Solid-State Circuits, Apr. 1999, vol. 34, No. 4.
Burd, T., et al. Design Issues for Dynamic Voltage Scaling. Berkeley Wireless Research Center, University of California Berkeley, pp. 9-14.
Dancy, A., et al. A Reconfigurable Dual Output Low Power Digital PWM Power Converter. Department of EECS, Massachusetts Institute of Technology, Cambridge, pp. 191-196.
Drop Michael
Henderson Eric L.
Kazi Tauseef
Macek Krong H.
Patel Nitin C
QUALCOMM Incorporated
Rouse Thomas R.
Velasco Jonathan T.
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