T-coil enhanced smartphone

摘要

A smart phone incorporating a T-coil unit is described. Selection between the output of the induction coil(s) of the unit and the analog output of the radio frequency section of smart phone can made by standard switches for the analog output of the smart phone. Alternatively, with control over the amplification of the induction coil output and the analog output of the radio frequency section, and over a comparator which receives both outputs, different modes of operations for the T-coil output and the analog output can be selected for the audio output of the smart phone. The T-coil unit can also be built as a smart phone dongle which notifies the user of the existence of induction loop signals.

主权项

1. A mobile telephone unit incorporating a microcomputer system including operating system and software applications comprising:
a T-coil unit having at least one induction coil, the T-coil unit connected to an audio output of the mobile telephone unit and having its output from the at least one induction coil switchable to the audio output, and further comprising:
a comparator receiving output signals from the at least one induction coil and signals from an audio analog line in the mobile telephone unit; anda switch receiving the output signals from the at least one induction coil, signals from an audio analog line in the mobile telephone unit and output signals from the comparator, the switch responsive to control signals selecting output signals from the at least one induction coil, the audio analog line in the mobile telephone unit or from the comparator to the audio output of the T-coil unit.