Display co-processing

A method comprising:

• receiving, by a low-power processor from an application processor, a request to alter visual content presented by a display;
• generating, based on the request, additional display data to alter the visual content presented by the display;
• causing a protocol converter to initiate a data transfer session with the display, the protocol converter configured to forward data to the display using a display-specific communication protocol, the data transfer session including signaling a mobile industry processor interface (MIPI) compliant data transfer initiation sequence or a MIPI compliant data transfer termination sequence;
• transmitting, during the data transfer session, the additional display data to the protocol converter;
• and
• causing the protocol converter to terminate the data transfer session effective to cause the display to update the visual content based on the additional display data.

A system comprising:

• a display configured to present visual content based on display data stored in a frame-buffer;
• a first processor configured to, upon entry of the system into a low-power state, write data describing alteration of the visual content to control registers;
• and
• a second processor configured to:
• generate, based on the data written to the control registers, additional display data to update less than all of the display data stored in the frame-buffer;
• and
• write the additional display data to the frame-buffer of the display to alter at least a portion of the visual content presented by the display.

A system comprising:

• a low-power processor configured to:
• receive, from an application processor, a request to alter visual content presented by a display;
• generate, based on the request, additional display data to alter the visual content presented by the display;
• and
• transmit, during a data transfer session, the additional display data to a protocol converter;
• and
• the protocol converter configured to:
• initiate a data transfer session with the display, the data transfer session including signaling a mobile industry processor interface (MIPI) compliant data transfer initiation sequence or a MIPI compliant data transfer termination sequence;
• forward the additional display data to the display using a display-specific communication protocol;
• and
• terminate the data transfer session effective to cause the display to update the visual content based on the additional display data.