Device and method for scaling pixel brightness based on location of a target pixel

A semiconductor device, comprising:

• storage circuitry configured to store a default gamma curve;
• scaling circuitry configured to:
• determine a scaling factor based on a location of a target pixel in a display panel, wherein the scaling circuitry determines the scaling factor by:
• determining a count of in-region pixels of the target pixel and neighboring pixels of the target pixel, the in-region pixels being located in a predetermined region of the display panel, and
• determining the scale factor based on a ratio of the count of the in-region pixels to a total number of the target pixel and the neighboring pixels, and
• determine a modified gamma curve by scaling the default gamma curve with the scaling factor, the modified gamma curve being used for a gamma transformation applied to image data defined for the target pixel;
• and
• register circuitry configured to store region shape data indicative of the predetermined region,
• wherein determining the count of the in-region pixels comprises:
• generating, based on the region shape data, rendered data that indicate whether each of pixels located on a horizontal line on which the target pixel is located in the predetermined region, and
• determining the count of the in-region pixels based on the rendered data.

A method, comprising:

• determining a scale factor based on a location of a target pixel in a display panel, wherein determining the scale factor comprises:
• determining a count of in-region pixels of the target pixel and neighboring pixels of the target pixel, the in-region pixels being located in a predetermined region of the display panel, wherein determining the count of the in-region pixels further comprises:
• determining, based on region shape data indicative of the predetermined region, a location at which a target horizontal line crosses a boundary of the predetermined region, on which the target pixel is located in the predetermined region, and
• determining the count of the in-region pixels based on the location, and
• determining the scale factor based on a ratio of the count of the in-region pixels to a total number of the target pixel and the neighboring pixels;
• determining a modified gamma curve by scaling a default gamma curve with the scale factor;
• applying a gamma transformation based on the modified gamma curve to image data defined for the target pixel to generate output voltage data;
• and
• updating the target pixel based on the output voltage data.