Telephone having an audio response function
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United States of America Patent
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-
Oct 5, 1999
Grant Date -
N/A
app pub date -
Aug 21, 1997
filing date -
Aug 21, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A microphone system is provided for picking up ambient sounds including noises and for producing a sound voltage signal. A threshold is obtained from the sound voltage signal for determining a response voice spoken by an addressee in response to the bell tone. A response sound voltage based on the response voice is compared with the threshold, and a response voice signal is produced when the comparison is established. In response to the response voice signal, a line of the telephone is closed.
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