Memory clock slowdown

Details Memory clock slowdown Memory clock slowdown

2006-11-20

2010-11-16

Connolly, Mark (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

C713S300000, C713S500000

Reexamination Certificate

active

07836318

ABSTRACT:
Circuits, methods, and apparatus for slowing clock circuits on a graphics processor integrated circuit in order to reduce power dissipation. An exemplary embodiment of the present invention provides a graphics processor having two memory clocks, specifically, a switched memory clock and an unswitched memory clock. The switched memory clock frequency is reduced under specific conditions, while the unswitched memory clock frequency remains fixed. In a specific embodiment, the switched memory clock frequency is reduced when related graphics, display, scaler, and frame buffer circuits are not requesting data, or are such data requests can be delayed. Further refinements to the present invention provide circuits, methods, and apparatus for ensuring that the switched and unswitched memory clock signals remain in-phase and aligned with each other.

REFERENCES:
patent: 4659999 (1987-04-01), Motoyama et al.
patent: 5197126 (1993-03-01), Harrell
patent: 5317601 (1994-05-01), Riordan et al.
patent: 5818366 (1998-10-01), Morley
patent: 5991883 (1999-11-01), Atkinson
patent: 6362680 (2002-03-01), Barnes
patent: 6472904 (2002-10-01), Andrews et al.
patent: 6525565 (2003-02-01), Young et al.
patent: 6614371 (2003-09-01), Zhang
patent: 6777980 (2004-08-01), Young et al.
patent: 7042263 (2006-05-01), Johnson et al.
patent: 7149909 (2006-12-01), Cui et al.
patent: 2004/0073821 (2004-04-01), Naveh et al.

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