Abstract: A method and apparatus for controlling the operation of electronic entertainment devices in an entertainment system is described herein. A hardware system is coupled to a plurality of electronic entertainment devices to receive and transmit audio-video signals Transmit logic is coupled through a digital computer interface, preferably a SCSI interface, to the hardware system. The transmit logic has a plurality of ports and a memory associated with each port for storing control data sequences for each respective port. Each portis independently addressable by the hardware system A plurality of transmitters, each coupled to a respective one of the transmit logic ports transmits the respective store; control data sequences to respective ones of the electronic devices.

Abstract: A method and apparatus for identifying codes for remotely controlling electronic devices via a wireless communication medium automatically selects a code which may control a first function of an electronic device. The code is transmitted to the electronic device via a wireless medium and then a check is made as to whether the first function occurred. If the first function occurred, then the code is identified as controlling the first function of the electronic device. If the first function did not occur, then the process is repeated with a different code.

Abstract: A heart beat rate monitor is provided with memory means for storing upper and lower limits of a range of heart beat rates. The limits are transmitted to and stored in the memory from an external source. The monitor wearer's heart beat is sensed and whenever the sensed beat rate is outside the range defined by the limits an out-of-range indication is provided to the wearer. The memory means are powered so as not to be affected by the depletion of the main battery which is the primary source of power for the monitor circuitry. In some embodiments, the limits received from the external unit are transmitted thereto for verification purposes. In some embodiments the actual sensed heart beat rate and/or the stored limits are displayable to the wearer upon request.