Abstract: A two-way remote control system suitable for use with a plurality of apparatus, the system including a hand held unit comprising a transmitter and a receiver, each transmitted message in the system comprising a series of pulses and the beginning of each message having a wake-up pulse which switches a receiver from a rest-state to an operative-state, the receiver switching back to the rest-state if no wake-up pulse has been received for a certain period.

Abstract: Remote control hand apparatus for operating different modules such as a TV-receiver, teletext decoder, video recorder, VLP player, audio system, audio tuner, compact disc player, audio recorder, etc. This hand apparatus has a plurality of module keys by means of which the user can get access to a specific module. In addition, a dot-matrix display element is provided around which a plurality of multi-functional keys are arranged. The control function of such a key depends on the module key operated and this function is shown on the display-element for each of these keys.