The system and method of the present invention optically transmits redundant packets of data using infrared signals at pseudo-random intervals to allow a receiver to distinguish between multiple simultaneous sources. The emitters repeatedly transmit a short packet at randomized intervals much shorter...http://www.google.es/patents/US7009501?utm_source=gb-gplus-sharePatente US7009501 - System and method of optical data communication with multiple simultaneous emitters and receivers
System and method of optical data communication with multiple simultaneous ...