Patent ID: 9607583
Date: 2017-03-28
CPC Classifications: G06F,G09G

Claim:
1. A display controller device for processing image data, the display controller device comprising a data processor for generating a display signal representing an image, a display output for connecting the display signal to a display, a debug interface and a writeback unit having an input coupled to the display signal and an output coupled to the debug interface, the writeback unit comprising: a slice controller for defining a set of slices of the image and consecutively selecting slices of the set, wherein the slice controller is arranged to receive commands from a debug system, the commands comprising a slice setup command for defining the set of slices of the image, a slice selector coupled to the slice controller for selecting pixel data from the display signal for a selected slice, a slice buffer coupled between the slice selector and the debug interface for temporarily storing the selected pixel data until the selected pixel data of the selected slice has been transferred via the debug interface, the slice controller being arranged to transfer the selected pixel data of the selected slice and subsequently select a next slice until all slices of the set have been selected and transferred.