Surveillance camera system
Patent 5627616 Issued on May 6, 1997. Estimated Expiration Date: 
June 22, 2014. 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.
June 22, 2014. 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.Patent References 1945112 2415563 3398664 3437753 3720147 3732368 3739703 Panoramic camera scanning system Camera and housing Mounting arrangement for a television monitoring camera InventorsAssigneeApplicationNo. 263918 filed on 06/22/1994US Classes:396/427, Surveillance type348/143Observation of or from a specific location (e.g., surveillance)ExaminersPrimary: Gray, David M.Attorney, Agent or FirmForeign Patent References
International ClassesG03B 029/00G03B 396/427 AbstractA camera module for use in a surveillance camera system is provided. The camera module includes a housing and a pan-and-tilt mechanism that is mounted to the housing. The pan-and-tilt mechanism includes a pan motor for panning a camera and a tilt motor for tilting the camera. The pan motor is mounted on the pan-and-tile mechanism so as to be stationary relative to the housing. A slip ring, mounted to the pan-and-tilt mechanism, provides electrical connections to the tilt motor and the camera and a flex cable connects the camera to the slip ring. Also provided are methods for controlling unique functions of the surveillance camera system. Calibration of a home pan position for the camera is achieved by monitoring an optical homing sensor. Calibration of a home tilt position for the camera is accomplished by driving the camera against a stop. Thereafter, pan and tilt positions of the camera are tracked relative to the home pan and tilt positions. The electric current for energizing the tilt and pan motors is controlled in relation to the motor speed. In addition, an auto-pivot feature provides automatic pivoting of the camera when the camera is in a vertical position. A tour feature is included for playing back a recorded sequence of camera pan and tilt positions. A speed scaling feature automatically adjusts panning and tilting speeds of the camera based on the distance of a target from the camera.Other References
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