Enhanced display wakeup utilizing fast port scanning
AssigneeIntel Corporation
InventorsNausheen Ansari, Roland P. Wooster, Perazhi Sameer Kalathil
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Abstract
An apparatus comprising an interface to receive a video signal transmitted by a video source device to a first port of a plurality of ports of a display; and a controller comprising circuitry, the controller to responsive to a detection that the video source device is to enter a standby mode, cause the display to enter a low power state; and upon waking from the low power state, scan the first port of the plurality of ports for a communication from the video source device and quiesce scanning of the remaining one or more ports of the plurality of ports of the display.
Claims22
An apparatus comprising:
- an interface to receive a video signal transmitted by a video source device to a first port of a plurality of ports of a display;
- and
- a controller comprising circuitry, the controller to:
- responsive to a detection that the video source device is to enter a standby mode, cause the display to enter a low power state;
- and
- upon waking from the low power state, periodically scan the first port of the plurality of ports for a communication from the video source device for a time period in which scanning of the remaining one or more ports of the plurality of ports of the display is quiesced.
A method comprising:
- receiving, at a display, a video signal transmitted by a video source device to a first port of a plurality of ports of the display;
- and
- responsive to a detection that the video source device is to enter a standby mode, causing the display to enter a low power state;
- and
- upon waking from the low power state, periodically scanning, by the display, the first port of the plurality of ports for a communication from the video source device for a time period in which scanning of the remaining one or more ports of the plurality of ports of the display is quiesced.
An apparatus comprising:
- a processor comprising:
- a cache memory to store instructions to be executed;
- and
- a processor core comprising circuitry to execute an operating system;
- wherein the processor is to:
- send an indication to a display that a standby mode is to be entered;
- store context information associated with a connection between the processor and the display;
- and
- upon a determination to exit the standby mode, determine whether to restore the context information when the connection between the processor and the display is resumed, wherein the processor is to bring up the display using a first exit procedure if the processor determines to restore the context information and to bring up the display using a second exit procedure if the processor determines not to restore the context information, wherein the first exit procedure is faster than the second exit procedure due to reuse of the context information.
Dependencies are inferred from the claim text.