Image Sensing Module Temperature Compensation Lookup Table
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Solution Overview
Problem
Temperature variations cause deformation of optical components in image sensing modules, leading to position deviations in acquired images, which existing technologies fail to effectively compensate for.
Innovation Solution
An image sensing module that includes a temperature sensing device and a calculation device with a look-up table to correct position deviations caused by temperature changes, using either operation temperature or position differences to adjust image positions based on pre-recorded deformation errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If temperature sensing device and look-up table compensation method are added, then position deviation compensation capability is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-recording position deviation data in a look-up table during the manufacturing process. The compensation values for different temperature points are calculated and stored in advance, so that during actual operation, the system only needs to query the pre-computed values rather than performing complex real-time calculations. This resolves the contradiction by enabling accurate compensation while keeping the runtime computational complexity low.
Solution Approach 2:
The patent replaces complex real-time temperature-compensation calculation mechanisms with a simplified lookup-based system. Instead of using complex algorithms to calculate position deviations during operation, the system substitutes this with a straightforward query of pre-stored compensation values from the look-up table, significantly reducing computational complexity while maintaining compensation accuracy.
2Measurement precision
If real-time temperature detection is implemented, then compensation accuracy is improved, but manufacturing cost and device complexity increase
Solution Approach 1:
The patent applies self-service by utilizing the existing operation temperature data that is already available during the image sensing process. Rather than introducing a separate temperature sensing device, the system leverages the temperature information that is inherently present during operation, allowing the compensation mechanism to serve itself using existing resources. This reduces device complexity while maintaining compensation accuracy.
Solution Approach 2:
The patent demonstrates universality by making the look-up table compensation method applicable to different operating conditions without requiring additional specialized components. The same compensation mechanism can handle various temperature scenarios by simply querying different entries in the look-up table, making the system multi-functional across different temperature conditions without increasing device complexity.
3Speed
If look-up table with temperature related parameters is used, then position deviation correction speed is improved, but memory requirements increase
Solution Approach 1:
The patent applies partial action by storing compensation data for selected representative temperature points in the look-up table rather than continuous data for all possible temperatures. The system captures position deviation characteristics at key temperature intervals, which is sufficient for effective compensation without requiring complete temperature-range data. This reduces memory requirements while maintaining correction speed.
Solution Approach 2:
The patent applies parameter changes by organizing the look-up table to store position deviation data as functions of temperature parameters. The compensation mechanism changes the representation of compensation data from raw coordinate corrections to temperature-parameterized values, allowing efficient storage and quick retrieval based on current temperature, thus balancing memory usage with correction speed.
Data Source
AI summary
The present invention provides an image sensing module including an image sensing device and a calculation device. The image sensing device includes a plurality of pixels for acquiring an operation image containing an object image. The calculation device stores a look-up table regarding a temperature related parameter and a position deviation of the object image at each pixel associated with the temperature related parameter, and selects a deformation error from the look-up table according to the temperature related parameter corresponding to the operation image so as to correct a current position of the object image in the operation image.