Image sensor, image processing system including the same, and image processing method

TWI940675BActive Publication Date: 2026-10-01SAMSUNG ELECTRONICS CO LTD
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Patent Information

Application Number
TW111133691
Authority / Receiving Office
TW · TW
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-09-07
Filing Date
2022-09-06
Publication Date
2026-10-01
Estimated Expiration
2042-09-05

AI Technical Summary

Technical Problem

Image sensors have a narrower dynamic range compared to human vision, leading to discrepancies in captured images under varying lighting conditions, particularly in backlight scenarios, which existing HDR technologies attempt to address but may not optimize for real-time processing and motion compensation.

Method used

An image sensor and processing system that generates multiple images with different exposure times, performs preprocessing to merge these images, and selectively applies HDR processing based on image information, distributing the workload between internal and external processors for optimized real-time performance.

Benefits of technology

Enhances the dynamic range of output images, improves processing speed and efficiency, and reduces power consumption by strategically allocating HDR processing tasks, allowing for better handling of varying lighting conditions and motion compensation.

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Abstract

An image sensor includes: a sensing unit configured to generate multiple images of the same object with different exposure times; a preprocessor configured to generate a merged image by merging the multiple images; an interface circuit configured to output at least one of the multiple images and / or the merged image to an external processor; and a controller configured to control the preprocessor to selectively generate the merged image based on information from the multiple images.
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Citation Information

Patent Citations

  • Electronic device and control method of the same

    US20150244916A1

  • Method of obtaining wide dynamic range image and image pickup device performing the same

    US20180167544A1

  • Image processing

    US20210073956A1