Multiple display pipelines driving a divided display

摘要

Systems, apparatuses, and methods for driving a split display with multiple display pipelines. Frames for driving a display are logically divided into portions, a first display pipeline drives a first portion of the display, and a second display pipeline drives a second portion of the display. To ensure synchronization between the two display pipelines, a repeat vertical blanking interval (VBI) signal is generated if either of the display pipelines has not already received the frame packet with configuration data for the next frame. When the repeat VBI signal is generated, both display pipelines will repeat processing of the current frame.

主权项

1. An apparatus comprising:
a first display pipeline configured to drive a first portion of a current frame to a first portion of a display; and a second display pipeline configured to drive a second portion of the current frame to a second portion of the display; wherein the first display pipeline is configured to:
receive data corresponding to a next frame;receive a regular vertical blanking interval (VBI) signal when both the first display pipeline and the second display pipeline have received configuration data for the next frame;receive a repeat VBI signal different from the regular VBI signal when either of the first display pipeline or the second display pipeline has not received configuration data for the next frame; anddrive the current frame again, responsive to determining the second display pipeline is not ready to drive the next frame, wherein determining the second display pipeline is not ready to drive the next frame comprising detecting the repeat VBI signal.