In a motion detection circuit, a difference signal between the video and one-frame delayed video signals is generated Edge signals are generated from the video and delayed video signals. The yoke assembly is journalled for rotation in a ring bearing on the base frame, adjacent its front end, and supported by a pair of roller units adjacent its rear end. Also disclosed is a process for producing a pigmented paint composition from the stir-in pigment. The system features a microphone, a universal serial bus and charger port, a flash drive, and a first side cover pivotally located on a base first side surface. A centralized manager, such as an AAA server, may perform the selection of the access policy.