Camera module otp burning light source coefficient compensation and control method

Abstract

The invention discloses a camera module set one time programmable (OTP) burning photosource coefficient remedying and a controlling method which comprise steps as follows: a. a photosource image A of a standard sample can be gathered under an OTP burning standard environment; b. a photosource image B of the standard sample can be gathered under an OTP burning and being corrected environment; c. the photosource coefficient matrix of the image A in the step a and the image B in the step b can be calculated by a photosource coefficient calculation software to acquire a photosource coefficient template; d. when the camera module set is burned under the OTP burning to be corrected environment, the photosource coefficient template of the step c can be brought to do coefficient correction. After the coefficient is corrected, a photosource image C is obtained; e. when the camera module set OTP is burned, the camera module set can do data burning according to the corrected photosource image C in the step d. The camera module set OTP burning photosource coefficient remedying and the controlling method can achieve to unify photosources of different photosource equipments into an effect under an identical target photosource in the camera module set OTP burning station to solve the problem that photosources in different color temperatures are difficult to adjust to be consistent in the different burning stations.

Description

technical field [0001] The invention relates to a management and control method, in particular to a compensation and control method for the OTP burning light source coefficient of a camera module, which is suitable for improving the consistency of the OTP burning of the camera module, thereby improving the consistency of the camera module. Background technique [0002] With the widening application of 5Meg, 8Meg, 12Meg and other high-pixel cameras, end customers have higher and higher requirements for the imaging effect and quality of cameras. How to improve the consistency and performance of camera modules has become particularly important. , OTP is the acronym for OneTimeProgrammable in English. It is a type of memory of MCU, which means one-time programming. OTP mostly adopts fusion wire structure, and the programming process is an irreversible destructive activity. OTP is convenient and fast to use with its low price. It has been used more and more in high-pixel cameras,...

AI Technical Summary

Problems solved by technology

[0002] With the increasing application of high-resolution cameras such as 5Meg, 8Meg, and 12Meg, end customers have higher and higher requirements for the imaging effect and quality of cameras. How to improve the consistency and performance of camera modules has become particularly important. , OTP is the acronym for OneTime Programmable in English. It is a memory type of MCU, which means one-time programming. OTP mostly adopts a fuse structure. The programming process is an irreversible destructive activity. OTP is convenient and fast to use with its low price It has been used more and more in high-pixel cameras, and has played a great role in improving the quality of high-pixel cameras. For example, when the camera module leaves the factory, the R / G and B of each module are calculated separately. / G and other ratios, and burn these ratios into OTP, then the client only needs to read these ratios from OTP and calculate the final increase value when displaying images, and set them into the image, so it is not easy to appear color cast Therefore, R / G, B / G data is one of the most important data in OTP programming. However, in the process of camera module OTP programming, different programming stations have different light source equipment, and different light sources The difference in the color temperature of the light source of the device leads to the problem of poor consistency of the products programmed under different light sources, and the difference in the color temperature of the light source lacks an effective means to unify to be truly consistent. Therefore, the control of the OTP programming light source of the camera module has become an industry Difficulties that urgently need to be solved

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