There's also a 2003 datasheet the describes basically the same compressed framebuffer transport as GB2485613: https://www.amd.com/content/dam/amd/en/documents/archived-te..., section 5.5.2

Also possibly related:

Method and apparatus for increasing memory resource utilization in an information stream decoder, https://patents.google.com/patent/WO1999057908A1/en

And a paper by a PHD student in 2005, Real-time Rendering with Wavelet-Compressed Multi-Dimensional Datasets on the GPU, https://cs.ucsb.edu/sites/default/files/documents/2005-05.pd...

Displaylink's own abandoned patent application talking about sending patches of compressed/uncompressed graphical data to the screen over USB: https://patents.google.com/patent/US20060119602A1/en

Using reference frames with Haar wavelet transforms in video compression, https://patents.google.com/patent/US6272180B1/en