Invention Grant
- Patent Title: Switching video streams for a display without a visible interruption
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Application No.: US14276190Application Date: 2014-05-13
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Publication No.: US10019971B2Publication Date: 2018-07-10
- Inventor: Binu Mathew , William C. Athas , Nils E. Mattisson
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agent David K. Cole
- Main IPC: G09G5/399
- IPC: G09G5/399 ; G09G5/395

Abstract:
The disclosed embodiments provide a system that facilitates driving a display in a computer system. During operation, the system receives an input video stream from a graphics source, wherein the input video stream comprises a sequence of video frames. Next, the system directs the input video stream through a set of two or more memory buffers including a front buffer and a back buffer to produce an output video stream, which is used to drive the display. While directing the input video stream through the set of memory buffers, the system writes a video frame from the input video stream into the back buffer, and concurrently drives the output video stream from a preceding video frame in the front buffer. When the writing of the video frame completes, the system switches buffers so that the back buffer becomes the front buffer, which drives the output video stream, and the front buffer becomes either a spare buffer or the back buffer, which receives a subsequent frame from the input video stream.
Public/Granted literature
- US20140247270A1 Switching Video Streams for a Display Without a Visible Interruption Public/Granted day:2014-09-04
Information query
IPC分类: