Circuit for indicating loss of portable telephone and control me

Details Circuit for indicating loss of portable telephone and control me Circuit for indicating loss of portable telephone and control me

1996-07-23

1999-01-19

Dorvil, Richemond

Telecommunications

Radiotelephone system

Security or fraud prevention

458410, 458 382, G06F 704

Patent

active

058624724

ABSTRACT:
A circuit and method for a portable telephone prevents a finder from exploiting the interests of the owner if the telephone becomes lost. The method contemplates the steps of: generating an audible alarm and a first message requesting input of a predetermined password when one of a predetermined time period elapses and a number of outgoing calls exceeds a predetermined number after an alarm function is enabled; detecting whether the predetermined password is input, and stopping generation of the alarm and the first message when the predetermined password is input; generating a second message indicating how an owner of the portable telephone can be contacted and activating a loss mode of the portable telephone when the predetermined password is not input; and automatically dialing a telephone number corresponding to the owner when a predetermined key on the portable telephone is input after the loss mode is activated.

REFERENCES:
patent: 3694579 (1972-09-01), McMurray
patent: 4843385 (1989-06-01), Borras
patent: 5134708 (1992-07-01), Marui et al.
patent: 5274695 (1993-12-01), Greem
patent: 5299132 (1994-03-01), Wortham
patent: 5351290 (1994-09-01), Naeini et al.
patent: 5515419 (1996-05-01), Sheffer
patent: 5646604 (1997-07-01), Maruyama et al.
patent: 5646977 (1997-07-01), Koizumi

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