Patent ID: 7095981

Claim:
A portable communication system comprising: an infrared transmitter apparatus, wherein the infrared transmitter apparatus comprises: at least one infrared light emitting device, modulation circuitry operable to convert a signal to one or more constant width electrical pulses to drive the infrared light emitting diode to transmit one or more corresponding constant width infrared pulses, and a transmitter housing enclosing the modulation circuitry and upon which the at least one infrared light emitting device is mounted; and an infrared receiver apparatus, wherein the infrared receiver apparatus comprises: an infrared light detection device to detect the one or more corresponding infrared pulses and generate one or more electric signals representative of the detected infrared pulses, a speaker, demodulation circuitry operable to convert the one or more electric signals representative of the detected infrared pulses to an audio signal to power the speaker to produce a sound output, and a receiver housing enclosing the speaker and the demodulation circuitry and upon which the infrared light detection device is mounted, wherein the receiver housing is formed to be self-supported entirely by the ear of a user.