Method and arrangement for limiting the use of a mobile telephon

Details Method and arrangement for limiting the use of a mobile telephon Method and arrangement for limiting the use of a mobile telephon

1997-03-03

2000-02-29

Hunter, Daniel S.

Telecommunications

Radiotelephone system

Usage measurement

455407, H04Q 720

Patent

active

060320389

ABSTRACT:
A method and arrangement for limiting the use of a mobile telephone is characterized in that it involves setting a time limit (TIMER.sub.-- VALUE) in said mobile telephone (20). The time limit can be set for accumulated operating time or elapsed time in general. Setting of the limit is advantageously made possible by means of a secret code (SECRET.sub.-- KEY). Thereafter, the mobile telephone begins measuring time, and when the elapsed or accumulated time reaches the set limit, operation of the mobile telephone (20) is blocked. Then, only operation by which a new time limit can be set or the block can be removed is allowed. A mobile telephone manufacturer can easily realize an arrangement according to the present invention in a mobile telephone, and said arrangement can just as easily be implemented by, for example, a mobile telephone renter. The temptation to misuse and steal mobile telephones decreases when it is known that said telephones have a limited operating time, after which they will not function.

REFERENCES:
patent: 5631947 (1997-05-01), Wittstein et al.
patent: 5812945 (1998-09-01), Hansen et al.
patent: 5826185 (1998-10-01), Wise et al.
patent: 5887266 (1999-03-01), Heinonen et al.

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