Patent · US Expired

Outputting a warning signal when approaching a protected area warning of an impending mode change

US6343212B1 · kind B1 · utility

90Cited by

16References

23Claims

0Family size

Assignee

Sony International (Europe) GmbH · DE

Inventors

Matthias Weber · Uttenreuth, DE
Gregor Winkler · Zorneding, DE

Key dates

Filing date	Mar 10, 2000
Grant date	Jan 29, 2002
Priority date	—
Expiry date	Mar 10, 2020

Classification

Technology area (CPC H)Electricity
CPC primaryH04M1/72463
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A predetermined area is protected from the disturbing usage of mobile terminals (e. g. cell phones) of a wireless communication system. Mode change information is sent over a system information message of a broadcast channel to change the operating mode (e. g. to deactivate) of the mobile terminal. This mode change information contains information, such as, the duration of the mode change, a reason for the mode change and information on groups of mobile terminals that will be exempted from the mode change. Additionally, the mobile terminal transmits an alarm signal to the user if the user is approaching a predetermined protected area.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.