Patent ID: 11941783
Assignee: APPLE INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 8:
9. A display pipeline system of an electronic device, comprising:
scaler circuitry configured to generate scaled image content by scaling image data using a first scaling process and to generate a fallback scaler output using a second scaling process, wherein the first scaling process comprises linear scaling, and the second scaling process comprises non-linear scaling; and
de-ringing circuitry comprising pixel difference circuitry, coupled to the scaler circuitry and configured to:
receive the scaled image content from the scaler circuitry;
receive the fallback scaler output from the scaler circuitry;
determine a change frequency of the image data, wherein determining the change frequency comprises determining differences in adjacent pixels in the image data using a plurality of subtractors and absolute value circuitries to determine sign-less differences between the adjacent pixels in the image data;
blend the scaled image content and the fallback scaler output using one or more weights based on the change frequency; and
output de-ringed scaled content based on the change frequency, the one or more weights, the scaled image content, and the fallback scaler output.