Silicon Motion, Inc.

Terry Chang

Raymond Wong

Richard Lc Chang

Frido Garritsen

Julia Chen

The invention in one embodiment is a method of managing power in a graphics controller. The method includes receiving a change indication related to a system power supply. The method also includes adjusting a first clock or adjusting a set of clocks including a first clock. The method further includes adjusting a controller power supply voltage.

Method and apparatus for reducing power consumption in a graphics controller

The invention in one embodiment is an apparatus. The apparatus includes a lookup table having a set of entries, each entry capable of maintaining a value. The apparatus also includes a DDA (Differential Digital Analyzer) table having a set of entries, each entry capable of maintaining a value and each entry of the DDA table corresponding to an entry of the lookup table. The apparatus further includes a first multiplexing unit having a set of inputs, each input corresponding to and coupled to an entry of the DDA table. The first multiplexing unit also having a control input, the control input causing the first multiplexing unit to route one of the inputs of the set of inputs to an output. Additionally, the apparatus includes a comparison block having logic suitable for comparing each entry of the lookup table to a comparison value. Furthermore, the apparatus include a select control block having logic suitable for generating a control signal based on an output of the comparison block, the output of the comparison block indicating which entry of the lookup table matched the comparison value. The control signal is generated on an output of the select control block, and the output of the select control block is coupled to the control input of the first multiplexing unit.

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Sunnyvale, CA, United States of America

Terry Chang