Single Video Processing Path for Multiple Sources
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Solution Overview
Problem
Current display devices require multiple video processing circuits to simultaneously process multiple videos, which increases cost and circuit area, necessitating a solution to use a single video processing circuit for multiple video processing.
Innovation Solution
A video processing method and circuit that receives multiple video sources with different pixel rates, utilizing a higher processing data rate to sequentially perform image processing on both sources during the same display time, allowing for simultaneous processing of multiple videos using a single path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple video processing circuits are used to simultaneously process multiple videos, then picture quality and processing capability are improved, but circuit area and cost increase
Solution Approach 1:
The patent implements time-division multiplexing where the single video processing circuit alternates between processing different video sources in periodic time slots. The circuit processes the first video source during a first time period and the second video source during a second time period, enabling multiple videos to be processed sequentially with the same hardware resources, thus reducing circuit area while maintaining processing capability
Solution Approach 2:
The patent designs a universal video processing circuit that can handle multiple video sources and perform various processing functions (picture quality processing, scaling, gamut conversion, de-interlacing) through configurable parameters rather than dedicated hardware for each function. This multi-functional approach allows one circuit to replace multiple specialized circuits, reducing overall circuit area
2Area of stationary object
If a single video processing circuit is used to process multiple videos, then circuit area is reduced, but processing data rate requirement increases
Solution Approach 1:
By dividing processing into periodic time slots dedicated to different video sources, the circuit processes each video source at its full required data rate during its allocated time period, rather than attempting to process multiple sources simultaneously at reduced rates. This temporal separation maintains high processing data rate performance while using a single circuit
Solution Approach 2:
The patent performs preliminary actions by pre-configuring processing parameters and pre-allocating time slots for different video sources before processing begins. This preparation enables the circuit to switch between different processing modes efficiently without losing processing speed, maintaining high data rate performance
Data Source
AI summary
A video processing method for a video processing circuit includes receiving a first video source corresponding to a first pixel rate and a second video source corresponding to a second pixel rate, wherein a processing data rate of a video processing path is greater than or equal to a sum of the first pixel rate and the second pixel rate. The method further includes using the processing data rate to sequentially perform an image processing to a first image of the first video source and a second image of the second video source corresponding to the same display time, to generate a first processed image and a second processed image.