US Patent 11145030 Method of controlling encoding of display data

Methods and systems for encoding display data by performing at least a part of a first predetermined transform algorithm on at least a first part of a first frame of display data to generate a first set of transform coefficients, and analysing information relating to at least the first set of transform coefficients to determine whether a different transform algorithm would be more suitable for encoding a second part of the first frame and/or a subsequent frame of the display data. If a different transform algorithm would be more suitable for encoding, the second part of the first frame and/or subsequent frame is encoded using the different transform algorithm to generate an encoded first frame and/or subsequent frame. If a different transform algorithm would not be more suitable, the second part of the first frame and/or subsequent frame of the display data is encoded using the first predetermined transform algorithm.