Abstract: A method for moving and controlling a video surveillance camera comprises the steps of: supporting a video surveillance camera for tilting movements about mutually perpendicular axes; transforming tilt and pan commands into angular movement commands; rotating the camera about the mutually perpendicular axes responsive to the angular movement commands, the video camera having a substantially hemispherical field of view as the camera is pivoted about the axes and the video camera generating a picture which is inverted relative to true horizontal over a portion of the field of view; and, automatically rotating the picture to a substantially right-side-up orientation whenever necessary, whereby a right-side-up picture is provided throughout the field of view without continuous panning rotation of the video camera. In a corresponding system, a servo mechanism tilts the video camera, a motion controller transforms the tilt and pan commands and a video signal processor rotates the picture.

Abstract: An electronic article surveillance tag which is responsive to forces applied to the tag's housing. The tag has a piezoelectric film which is attached to the tag housing in such a way that forces which are applied to the tag housing are mechanically coupled to the piezoelectric film. The piezoelectric film generates a voltage which is proportional to the forces mechanically coupled thereto. An alarm detecting means compares the voltage generated by the piezoelectric film with a predetermined reference voltage, and initiates an audible alarm when the voltage generated exceeds the predetermined reference voltage.

Abstract: A housing assembly for a theft-deterrent tack comprises a housing, at least one frangible vial containing a theft-deterrent substance disposed in the housing and a displaceable member supported by the housing for movement therein to cause fracture of the vial and for concurrently opening a theretofore closed portion of the assembly for egress of the theft-deterrent substance. The displaceable member has a first end portion, an opposed second end portion and an intermediate portion, the first end portion being in an interference movement path with the vial. The housing has a bounding surface having an opening therethrough, the displaceable member second end portion being resident in the housing bounding surface opening when the displaceable member is in non-fracturing relation to the vial. The displaceable member defines a passage therethrough opening into both of the first and second end portions thereof.