Power-supply transfer apparatus for telephone
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United States of America Patent
Stats
-
Apr 10, 1990
Grant Date -
N/A
app pub date -
Oct 6, 1987
filing date -
Oct 7, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention is directed to a prower-supply transfer apparatus for a telephone wherein the power supply is fed from a telephone line by a power supply transferring circuit when the operation has been decided as a low speed operation by a speed deciding circuit, the power supply is fed from a separate power supply circuit by the power-supply transferring circuit when the operation has been decided as the high speed operation, so that the low-speed operation is performed through the speed control by the speed decision result not only when the processing may be performed even at the low speed operation in the common telephone or the like, but also when the high-speed processing is required in voice recognition or the like.
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