Patent 6841780 Issued on January 11, 2005. Estimated Expiration Date: January 17, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
250/341.1, With irradiation or heating of object or material382/103, Target tracking or detecting348/143, Observation of or from a specific location (e.g., surveillance)348/152, Intrusion detection250/550, Interference pattern analysis (e.g., spatial filtering or holography)250/222.1, Inanimate article382/124, Using a fingerprint348/154, Motion detection250/237G, Gratings (moire fringes)396/427, Surveillance type72/11.7, Sensing flatness (e.g., crown)356/603, Projection of structured light pattern356/618, Moire356/124, LENS OR REFLECTIVE IMAGE FORMER TESTING356/239.1, Transparent or translucent material702/136Thermal related property
An object detection system is provided that projects one or more patterns onto a monitored area, captures one or more live images of the monitored area, and detects objects that enter the monitored area by detecting changes in the one or more patterns in the live images. Such an object detection system may be less susceptible to dynamic lighting conditions, and more sensitive to object motion and/or presence.
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January 17, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
