Patent ID: 6731333
Filing Date: 2004-05-04
Classification: G08B,H04N

Abstract:
An improved surveillance system, comprising of a motor, a rotary disc, a camera lens, a plurality of restricting switches, a driver, a motor driven controller, and a control display system; wherein:the driving axle of the motor being coupled to the rotary disc and the camera lens; the rotary disc has a plurality of protruded sensing members respectively disposed at a multiplicity of equidistantly spaced locations around a circumference of the rotary disc, one of the equidistantly spaced locations being devoid of a protruded sensing member; the plurality of restricting switches being respectively disposed adjacent the circumference of the rotary disc, a first of the plurality of restricting switches being disposed in alignment with the one location of the rotary disc devoid of a protruded sensing member, a second of the plurality of restricting switches being disposed in alignment with a location of the rotary disc displaced [n+{fraction (1/2)}] equidistantly spaced locations from the one location devoid of a protruded sensing member; the plurality of restricting switches sending a sensed contact signal to the motor controller, and the motor controller receiving the sensed signal from the restricting switches and an instruction signal of the control display system; after a determination and analysis, the driver being rotated clockwise or anti-clockwise to drive the motor to a specific position so that the camera lens outputs a desired image.