Video Generating System Bus Architecture for Multi-Sensor Data Transmission
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Solution Overview
Problem
Conventional video generating systems with multiple image sensors require complex back-end circuits and large buffer memory due to the need for dedicated signal transmission interfaces, which increases complexity and performance requirements as the number of image sensors increases.
Innovation Solution
A bus-based transmission architecture is introduced, allowing shared signal transmission interfaces in a time-sharing manner, and controlling output timing using synchronization signals to eliminate the need for buffer memory and reintegration of image data, enabling instant output generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated signal transmission interfaces are used for each image sensor, then image data transmission is reliable and synchronized, but the number of signal transmission interfaces and input pins increases proportionally with the number of image sensors, increasing system complexity
Solution Approach 1:
Multiple dedicated signal transmission interfaces are merged into a single shared interface. The patent combines the transmission paths of multiple image sensors into one common bus interface, reducing the number of interfaces from N (one per sensor) to 1 (shared), thereby reducing system complexity while maintaining reliable data transmission through coordinated control.
Solution Approach 2:
The shared signal transmission interface is designed to handle data from multiple different image sensors universally. This single interface can receive and process image data from any connected sensor, making it a multi-functional component that replaces multiple dedicated interfaces, thus reducing overall system complexity.
2Productivity
If multiple dedicated signal transmission interfaces are used, then each image sensor can transmit data independently, but the back-end circuit requires large buffer memory capacity and powerful computation capability to handle and reorganize the data
Solution Approach 1:
Image data from multiple sensors is transmitted in a pre-arranged sequence that matches the desired output format. The transmission order is planned in advance so that the combining circuit receives data ready for direct output, eliminating the need for complex reorganization operations and reducing buffer memory requirements.
Solution Approach 2:
Instead of having the back-end circuit perform complex reorganization of data after reception, the patent inverts the approach by arranging the data transmission sequence in advance to match the final output requirements. This shifts the organization work from the back-end processing stage to the transmission planning stage, simplifying the back-end circuit.
3Device complexity
If a shared bus interface is used for multiple image sensors, then system complexity is reduced, but signal transmission timing must be carefully coordinated to avoid data conflicts
Solution Approach 1:
Image sensors transmit data periodically in time-division multiplexed slots through the shared bus. Each sensor is assigned specific time windows for transmission, creating a periodic transmission pattern that prevents conflicts while allowing all sensors to share the common interface efficiently.
Solution Approach 2:
The system dynamically assigns transmission timing to different image sensors based on their data availability and output requirements. The transmission schedule can be adjusted in real-time to optimize performance, allowing flexible coordination of multiple sensors sharing a single interface without rigid fixed timing constraints.
Data Source
AI summary
A video generating system includes: a plurality of image sensors, arranged to generate a plurality of images and a plurality of synchronization signals corresponding to the images; a combining circuit, coupled to the image sensors, arranged to generate a plurality of output images according to the images, and generate a plurality of output synchronization signals corresponding to the output images according to the synchronization signals; and a bus, coupled between the image sensors and the combining circuit, arranged to perform signal transmission. The image sensors comprise a first image sensor and a second image sensor; and when the combining circuit receives image data of at least a first image generated by the first image sensor, the combining circuit does not receive image data of at least a second image generated by the second image sensor at the same time.