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US 10,096,080 B2Granted
Power optimization with dynamic frame rate support
AssigneeIntel Corporation
InventorsSeh W. Kwa, Nausheen Ansari, Satyanarayana Avadhanam
Life of this patent
Estimating the term…
Abstract
A frame of pixel data may be burst at a higher frame rate to create a lower effective refresh rate when the actual image update rate is lower than the frame rate. This results in the ability to power manage the transmit portion of the display engine and the receive portion of the panel electronics, while reducing display initiated repetitive memory traffic to conserve power.
Claims24
A method comprising:
- detecting a first image frame that does not change from a previous second image frame;
- in response to detecting the first image frame that did not change from the previous second image frame, lowering a refresh rate of a display to a lower refresh rate after sending the previous second image frame by refraining from sending the first image frame to the display;
- causing a shutdown of a link to a display panel for a period that includes part of a vertical blanking interval and frame data time of the unsent first image frame, said period beginning after a hold time to account for a pipeline in the display and the period ending before a link training interval;
- and
- power managing a display interface between a computer platform and the display panel during the link shutdown.
2 more elements
One or more non-transitory computer readable media storing instructions executed by a processor to perform a sequence comprising:
- detecting a first image frame that does not change from a previous second image frame;
- in response to detecting the first image frame that did not change from the previous second image frame, lowering a refresh rate of a display to a lower refresh rate after sending the previous second image frame by refraining from sending the first image frame to the display;
- causing a shutdown of a link to a display panel for a period that includes part of a vertical blanking interval and frame data time of the unsent first image frame, said period beginning after a hold time to account for a pipeline in the display and the period ending before a link training interval;
- and
- power managing a display interface between a computer platform and the display panel during the link shutdown.
2 more elements
An apparatus comprising:
- a processor to:
- detect a first image frame that does not change from a previous second image frame,
- in response to detecting the first image frame that did not change from the previous second image frame, lower a refresh rate of a display to a lower refresh rate after sending the previous second image frame by refraining from the first image frame to the display,
- cause a shutdown of a link to a display panel for a period that includes part of a vertical blanking interval and frame data time of the unsent first image frame, said period beginning after a hold time to account for a pipeline in the display and the period ending before a link training interval, and
- power manage a display interface between a computer platform and the display panel during the link shutdown;
- and
- a storage coupled to said processor.
4 more elements
Dependencies are inferred from the claim text.