Pre-roll Circuit Compressor for Image Sensor Power Management
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Solution Overview
Problem
Battery-based camera systems struggle to provide continuous image capture and processing due to limited power supply, resulting in incomplete data sets and reduced user experience.
Innovation Solution
A pre-roll circuit utilizing a pseudo SRAM (PSRAM) with a compressor circuit to store and compress pre-stored image data, allowing for continuous image capture and delayed processing when the camera is activated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous image capture and processing is performed in a battery-based camera system, then complete image data sets are obtained, but power consumption increases significantly
Solution Approach 1:
The system performs preliminary image capture and compression before the camera is fully activated. The pre-roll circuit captures images continuously in low-power mode and compresses them using a compressor circuit, storing the compressed data in advance. When motion is detected or the camera is activated, the pre-compressed images are ready for immediate processing, eliminating the need for continuous high-power operation during normal capture.
Solution Approach 2:
The invention extracts the image compression function into a separate compressor circuit that operates independently from the main camera processing system. This allows compression to be performed on captured images before they enter the power-intensive processing pipeline, reducing the overall power consumption while maintaining complete image data sets.
2Manufacturing precision
If pre-roll images are stored without compression, then higher resolution is maintained, but memory capacity is quickly exhausted
Solution Approach 1:
The system changes the parameter of image data by applying compression algorithms that reduce the data size while preserving essential image quality. The compressor circuit transforms full-resolution images into compressed formats that occupy less memory space, allowing more frames to be stored in the same memory capacity while maintaining favorable resolution through intelligent compression techniques.
3Productivity
If the camera remains activated for long-term operation, then real-time image processing is continuous, but battery life is depleted quickly
Solution Approach 1:
The system transitions from continuous camera operation to periodic activation. The pre-roll circuit operates continuously in a low-power state to capture and compress images, while the main camera system activates only when needed (upon motion detection or user request). This periodic operation pattern maintains real-time processing capability when required while extending battery life through reduced overall power consumption.
Data Source
AI summary
A pre-roll circuit for an image sensing system is configured to receive a pre-stored image data through an image sensor and provide the pre-stored image data to a camera. The pre-roll circuit includes a first memory and a compressor circuit. The first memory is configured to store the pre-stored image data. The compressor circuit, coupled to the first memory, is configured to compress the pre-stored image data before the pre-stored image data is stored into the first memory.