CPU Interface Synchronizing Motion Code Frames with Video Streams
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Solution Overview
Problem
Existing methods for synchronizing video streams with motion codes lack efficient mechanisms to ensure precise timing and synchronization between video and motion platforms, leading to potential desynchronization and an unsatisfactory user experience.
Innovation Solution
A CPU platform interface method and device that utilizes video stream timestamps and CPU clock values to synchronize motion code frames with video streams by determining the correct order and timing for sending motion code frames to actuators, ensuring synchronized playback through a motion service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If video stream timestamps and CPU clock values are used for synchronization, then synchronization precision is improved, but system complexity increases
Solution Approach 1:
A queue mechanism is introduced as an intermediary between the video stream processing and motion code frame delivery. The queue stores motion code frames and manages their delivery timing, acting as a buffer that decouples the high-precision timing requirements from the actual delivery mechanism, thereby maintaining synchronization precision while reducing system complexity
Solution Approach 2:
Motion code frames are pre-loaded into the queue before they are needed for playback. By preparing and storing the frames in advance, the system can deliver them at the precise moments required without real-time processing delays, improving synchronization while simplifying the real-time delivery mechanism
2Manufacturing precision
If motion code frames are pre-loaded into queue, then delivery timing accuracy is improved, but memory usage increases
Solution Approach 1:
Instead of loading all motion code frames into the queue at once, the system loads only the necessary portion - specifically, frames that will be needed based on the calculated future time value and queue duration. This partial loading approach achieves the required delivery timing accuracy while minimizing memory consumption by avoiding unnecessary frame storage
Data Source
AI summary
The present document describes a CPU platform interface method and device for synchronizing a stream of motion codes with a video stream. The method and device use the video stream time stamps and movie identity information from the software movie player along with the CPU time clock to fill a queue of motion code frames and determine when the frames will be sent as a motion stream to one or more actuators of a motion platform.