Mobile telephone device system having steal prevention function
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 8, 1997
Grant Date -
N/A
app pub date -
Nov 29, 1995
filing date -
Nov 29, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a mobile telephone device having a preassigned call number and comprising a power supply unit, a keyboard section, a display section, a power key, and a control section, the mobile telephone device transmits, on position registration operation, a position registration signal including the preassigned call number to the base station and receives an information signal from the base station as a result of the position registration operation. The information signal is for representing whether or not the preassigned call number coincides with that of a stolen mobile telephone device. The control section invalidates the operation of the keyboard and the power key and stops display of the display section and then transmitting an alarm signal to the base station on reception of the information signal representing the fact that the preassigned call number coincides with that of the stolen mobile telephone device.
First Claim
Family
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