Electrical computers and digital processing systems: support – Clock – pulse – or timing signal generation or analysis – Multiple or variable intervals or frequencies
Reexamination Certificate
2008-01-01
2008-01-01
Lee, Thomas (Department: 2115)
Electrical computers and digital processing systems: support
Clock, pulse, or timing signal generation or analysis
Multiple or variable intervals or frequencies
C713S500000, C713S502000
Reexamination Certificate
active
10742444
ABSTRACT:
Methods, circuits, and apparatus for changing a frequency of a clock signal provided to a graphics memory while reducing any resulting visual glitch or disturbance on a monitor. A specific embodiment provides multiple clock sources that may be multiplexed or selected to provide a memory clock signal to the graphics memory. The multiplexer switches from providing a first clock source signal as the memory clock signal to providing a second clock source signal as the memory clock signal. The first clock source changes its frequency of operation. After the first clock source settles or stabilizes, the multiplexer switches back to providing the first clock source signal as the memory clock signal.
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Alben Jonah M.
Gupta Saurabh
Irwin Jeffrey J.
Wagner Barry
Yeoh Sonny
Cribbs Malcolm D
Lee Thomas
NVIDIA Corporation
Townsend and Townsend / and Crew LLP
Zigmant J. Matthew
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