Method and photo sensor assembly for sensing rotational positions of a camera module, and surveillance camera having the assembly

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United States of America Patent

PATENT NO 11689806
APP PUB NO 20210289124A1
SERIAL NO

17199596

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Abstract

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A photo sensor assembly may include: a rotator configured to rotate together with a camera module; a plurality of first photo interrupter bars disposed at a same interval along a first circumference on the rotator; a second photo interrupter bar disposed at a second circumference on the rotator; a first photo sensor disposed closer to the first circumference than to the second circumference, and configured to detect a first light-blocking pattern generated from the plurality of first photo interrupter bars; a second photo sensor disposed closer to the second circumference than to the first circumference, and configured to detect a second light-blocking pattern generated from the second photo interrupter bar; and a processor configured to estimate an initial position of the rotator based on the second light-blocking pattern and estimate a rotational angle from the initial position of the rotator based on the detected first light-blocking pattern.

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Patent Owner(s)

  • HANWHA TECHWIN CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hwang, Ho Seoung Seongnam-si, KR 2 4
Kim, Chang Yeon Seongnam-si, KR 146 967
Kong, Won Joon Seongnam-si, KR 3 2
Lee, Kyoung Jae Seongnam-si, KR 4 4
Park, Jong In Seongnam-si, KR 22 61

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