Antitheft system for use with video recorders, satellite receivers, CD players etc. - has system activated by code word after disconnection with full disabling after number of incorrect attempts

摘要

An axial input (20) is received by the tuner of a video recorder (25) and the HF signal can be transmitted directly to the input (19) of a television receiver (21). Signals received are processed by a control stage (5) for recording (2). These signals may also be passed to the TV via the AV output (18). A microprocessor (11) provides controlled exchange with a memory (10) in which locked data is stored and can be displayed on the screen. Once the theft protection code is applied in response to a displayed request, the system can only be accessed by code word entry following a disconnection. After several incorrect attempts the system is blocked. ADVANTAGE - Protects against theft by disabling system.