Television/video recorder remote control functions having light spot pattern cathode ray screen impinging/detector recognising and logic system movement finding/transmitting electronics mechanism

摘要

The user interface assembly has a remote control unit (2) and a cathode ray screen (3). A light spot (D2) sweeps the screen with a luminous spot. A detector detects the spot appearance with a high pass filter. Logic processing determines the detection of light and passage of the spot, determining the movement (Z) on the screen. A predetermined cycle allows transmission of information to the electronics mechanism.