Commentary systems
OwnerBruce Samuel Sedleyinventor
Life of this patent
Estimating the term…
Abstract
A commentary system for exhibits at museums includes a recorded commentary store and an output amplifier which supplies the recorded message to an aerial. Visitors to the museum are provided with a pick-up coil and an earphone connected directly to the coil. The coil is placed firmly closely adjacent the aerial to inductively couple the aerial and coil so that the visitor may hear the commentary. The pick-up coil and the earphone require virtually no maintenance and no power supply. The audio signal is generated solely by energy derived from the broadcast.
Claims6
A commentary system for individual exposition of exhibits to visitors at an exhibition comprising a commentary arranged to be broadcast by an aerial which has a highly localized electric signal field disposed adjacent said exhibit, a pick-up coil closely adjacent said aerial inductively coupled thereto, and a loudspeaker directly connected to said coil for converting said broadcast into audio signals, said audio signals generated solely by energy derived from said broadcast without the need for any additional amplification.
Dependencies are inferred from the claim text.