Devices enabling radiotelephones to manage filtering and...

Details Devices enabling radiotelephones to manage filtering and... Devices enabling radiotelephones to manage filtering and...

2000-01-27

2003-06-24

Urban, Edward F. (Department: 2685)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S422100, C455S074100

Reexamination Certificate

active

06584319

ABSTRACT:

CROSS REFERENCE TO RELATED APPLICATIONS
This application is a national stage of PCT/EP 98/01411 filed Jul. 1, 1998 and based upon French application 97 08 546 filed Jul. 1, 1997 under the International Convention.
FIELD OF THE INVENTION
The present invention defines devices and procedures to be included in radiotelephones and in their environment in order to allow them to react correctly to cases of jamming and of filtering.
BACKGROUND OF THE INVENTION
Radiotelephones, which are becoming more and more widespread, have the drawback* of creating an audible nuisance. The current solutions, such as the use of vibrators, solve the problem only incompletely since they assume a deliberate act by the users and are inoperative in the event of forgetfulness or of unwillingness. In order to limit this nuisance, apparatus for filtering and neutralizing portable radiotelephones will be installed in places to be protected: cinemas, trains, etc. Some of this filtering apparatus is described by the patents FR 97 07000, FR 97 10105 and PCT FR 98/01109, and is designated by the term “jammer”.
In the texts below we will use the terms filtering and jamming equivalently, whether they are deliberate or accidental, or result from shadow areas.


REFERENCES:
patent: 4752949 (1988-06-01), Steinbeck et al.
patent: 5224150 (1993-06-01), Neustein
patent: 5442805 (1995-08-01), Sagers et al.
patent: 5898908 (1999-04-01), Griffin et al.
patent: 6011973 (2000-01-01), Valentine et al.
patent: 6128485 (2000-10-01), Mori et al.

Affiliated with

Also associated with

Rating

Devices enabling radiotelephones to manage filtering and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Devices enabling radiotelephones to manage filtering and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Devices enabling radiotelephones to manage filtering and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3133665