Polyphonic Doorbell Chime System
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United States of America Patent
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Issued Date -
Sep 9, 2010
app pub date -
Oct 24, 2007
filing date -
Oct 24, 2007
priority date (Note) -
Abandoned
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Abstract
A door chime system includes a microcontroller having a polyphonic MIDI music processor and a data memory for storing MIDI format sound files. The microcontroller includes an input for accepting signals from door chime actuators or pushbuttons and an output representative of distinct MIDI sound files.
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