Temperature-based pixel drive compensation
AssigneeApple Inc.
InventorMahesh B. Chappalli
Life of this patent
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Abstract
Image data for a current image frame may be compensated for transient response variations due to variations in display panel temperatures at various positions of the display panel by performing pixel drive compensation. The pixel drive compensation may be performed based at least in part upon display panel temperatures at various portions of the display panel. In this way, drive compensation corresponding to various temperature variations in a display panel may be implemented.
Claims20
Pixel drive compensation circuitry, comprising:
- pixel modification circuitry, wherein the pixel modification circuitry is configured to:
- modify first input pixel data based at least in part on second input pixel data and a temperature associated with the first input pixel data to produce a multi-frame history;
- and
- perform a write-back of the multi-frame history to memory communicatively coupled to the pixel modification circuitry;
- and
- drive compensation circuitry, wherein the drive compensation circuitry is configured to:
- retrieve the multi-frame history from the memory;
- and
- determine a drive compensation value based at least in part on third input pixel data, a temperature associated with the third input pixel data, and the multi-frame history, wherein an electronic display is configured to drive a pixel of a display panel based at least in part on the drive compensation value.
A method for operating a pixel drive compensation circuitry implemented in an electronic device, comprising:
- modifying first input pixel data based at least in part on second input pixel data and a temperature associated with the first input pixel data to produce a multi-frame history;
- and
- performing a write-back of the multi-frame history to memory communicatively coupled to the pixel drive compensation circuitry;
- retrieving the multi-frame history from the memory;
- and
- determining a drive compensation value based at least in part on third input pixel data, a temperature associated with the third input pixel data, and the multi-frame history, wherein an electronic display is configured to drive a pixel of a display panel based at least in part on the drive compensation value.
An electronic device comprising:
- a display panel;
- a memory;
- and
- a display pipeline coupled between the memory and the display panel, wherein the display pipeline comprises:
- pixel drive compensation circuitry, comprising pixel modification circuitry, wherein the pixel modification circuitry is configured to:
- modify first input pixel data based at least in part on second input pixel data and a temperature associated with the first input pixel data to produce a multi-frame history and a temperature associated with the first input pixel data to produce a multi-frame history;
- and
- perform a write-back of the multi-frame history to memory
- communicatively coupled to the pixel modification circuitry;
- and
- drive compensation circuitry, wherein the drive compensation circuitry is configured to:
- retrieve the multi-frame history from the memory;
- and
- determine a drive compensation value based at least in part on third input pixel data, a temperature associated with the third input pixel data, and the multi-frame history, wherein an electronic display is configured to drive a pixel of a display panel based at least in part on the drive compensation value;
- wherein the display pipeline is configured to provide the modified first input pixel data for rendering at the display panel.
Dependencies are inferred from the claim text.