Synchronization between one or more display panels and a display engine
AssigneeIntel Corporation
InventorsDouglas Robert Huard, Paul S. Diefenbaugh, Vishal R. Sinha
Life of this patent
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Abstract
Particular embodiments described herein provide for an electronic device that includes a display panel. The display panel includes a timing controller (TCON) and a synchronization engine. The TCON can generate a video stream of video frames with a frame rate and the synchronization engine is configured to change the frame rate of the video stream by adding vertical blanking lines to or removing vertical blanking lines from video frames in the video stream.
Claims17
A display panel configured to enter and exit a low power mode, the display panel comprising:
- a display;
- a timing controller, wherein during the low power mode, the timing controller generates a video stream with a frame rate;
- and
- a synchronization engine, wherein, after exiting the low power mode, the synchronization engine receives a start of frame indicator from a display engine and, at least partially based on the start of frame indicator, is configured to change the frame rate of the video stream by adding vertical blanking lines to or removing vertical blanking lines from one or more video frames in the video stream.
A method comprising:
- entering a low power mode where a timing controller in a display panel does not receive video data from a display engine;
- exiting the low power mode;
- determining a first frame rate of a first video stream from the display engine;
- determining a second frame rate of a second video stream from the timing controller;
- and
- receiving a start of frame indicator from the display engine;
- and
- changing, based at least partially on the start of frame indicator, the second frame rate of the second video stream by adding vertical blanking lines to or removing vertical blanking lines from one or more video frames in the second video stream so the second frame rate of the second video stream matches the first frame rate of the first video stream.
A system to synchronize a video stream of a display panel with the video stream of a display engine, the system comprising:
- the display engine, wherein the display engine can enter a low power mode where the display engine does not send video data to a first display panel and upon exit of the low power mode, the display engine generates a first video stream with a first frame rate;
- the first display panel includes:
- a first timing controller, wherein, when the display engine is in the low power mode and not sending video data to the first display panel, the first timing controller generates a second video stream of video frames with a second frame rate;
- and
- a first synchronization engine, wherein, when the display engine exits the low power mode and sends the first video stream with the first frame rate, the first synchronization engine is configured to receive a start of frame indicator from the display engine and, at least partially based on the start of frame indicator, cause the first timing controller to change the second frame rate of the second video stream by adding vertical blanking lines to or removing vertical blanking lines from one or more video frames in the second video stream so the second frame rate of the second video stream matches the first frame rate of the first video stream.
Dependencies are inferred from the claim text.