Telephone set of distinctive ringing type wherein pattern of telephone number call signal is registered for determination of telephone number being called
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United States of America Patent
Stats
-
Sep 30, 1997
Grant Date -
N/A
app pub date -
Nov 28, 1994
filing date -
Dec 7, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A telephone set using two or more telephone numbers called by respective call signals having different patterns, which are stored in a pattern data memory when the call signals are received and detected in a registering mode and with which the pattern of a call signal received when the telephone set is not in the registering mode is compared to determine the telephone number being called. The registering mode is established by an operator-controlled data input device. The patterns of the call signals are detected by a pattern detector in the registering mode, and the detected patterns are registered in the pattern data memory, so that the telephone number called by each call signal is determined by a pattern determining device as a result of comparison of the pattern of each call signal with the registered patterns in the pattern data memory. The telephone set preferably has an indicator for indicating on and off patterns of the call signals stored in a temporary memory.
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