Mux-free architecture for pixel data bus latching in foveated displays

Abstract

On a foveated electronic display, foveated image data may include a variety of groupings of pixels in different resolutions for different parts of the display. As such, different parts of the foveated image data are routed to different pixels of the electronic display. One way of routing data is to use multiplexers to select which image data is routed to which source latches of columns of pixels of the electronic display. Depending on the number of columns of the electronic display, however, the multiplexers may consume a significant portion of the die area while also consuming a significant amount of energy and reducing the field-of-view (FOV). Instead of using multiplexers to route foveated image data in the electronic display, groups of source latches of the electronic display may be hardwired to respective wires of a pixel data bus.