Abstract: A remote controlled radio frequency receiver. A modulated carrier having a frequency F1 containing remote control data is received in a radio frequency receiver having a local oscillator and demodulator. The data contained in the received carrier is produced as digital data. A microprocessor executes commands represented by the digital data. The radio receiver frequency receiver is tuned by a frequency synthesizer which is incremented by a microprocessor to tune a frequency band containing the modulated carrier. A non-volatile memory is provided for storing the value of a carrier frequency, and the value of an access signal in the event a carrier transmitter fails to produce the modulated carrier containing the needed remote control data.

Abstract: Method of decoding data making it possible to correct certain errors, e.g. in synchronization and transmission. The method relates to decoding data transmitted in groups of blocks. Each block has n1+n2 bits, where n1 is the length of a corresponding information word. The information word is extended to an error protection block of n1+n2 bits by application of a linear error protection code and an off-set which indicates the position of the block within a group. Synchronization is established by incremental generation of a position-indicating syndrome from the block. If error correction is found to be necessary, it begins after synchronization. Synchronization is restarted if too many errors occur.