Motorola Corporation

Motorola Solutions, Inc.

Klaus Pai

Mark Edwards

Volker Martschink

Christopher W Wright

Raul E Carpio

Ralf Gregory

Anneke Kate Brenner, Legal Representative

Valerie Wright, Legal Representative

Georgina Beth Redican, Legal Representative

Matthias Nerling

Raul Carpio

Christopher Wright

A mobile station () operable in a wireless communication system (), the mobile station including means (of) for reporting to a location server () of the system a current location of the mobile station and a controller (of) for controlling the means for reporting to report to the location server a current location of a second mobile station () detected to be near to the mobile station. A wireless communication system () in which the mobile station is operable and a method () operable in the system are also described.

Mobile station, wireless communication system and method of operation

In a communication device ( ) with an earpiece ( ) and a microphone ( ), there is a sensor ( ) relating a first connection line ( ) from the earpiece ( ) to the microphone ( ) on a system ( ) which is independent of the device and of the person using it, such as the earth's gravitational field, and which selects the operating mode QUIET ( ) or LOUD ( ) of the communication device in accordance with this. The sensor ( ) switches the communication device ( ) to QUIET when the angle ( ) between the connecting line ( ) and the plumbline ( ) of the gravitational field basically corresponds to the angle ( ) between a second connecting line between the ear ( ) and the mouth ( ) of a person ( ) who is authorized to make the call, so as to bar other persons ( ) who are in the vicinity (X ) from hearing the output from the communication device loudspeaker ( ).

Communication device with operation mode selection according to its position in relation to an independent reference system

An RF power amplifier is provided having means for defining rise and fall envelopes of the RF power, i.e. the key and de-key characteristics. A power amplifier (10), detector (13) and regulator (15 ) form a power control feedback loop. A further regulator (21) is provided having a first input coupled to the output of the power control loop regulator and an output coupled to the input of the power control loop regulator, thereby providing negative feedback to the power control loop regulator. Means are provided, coupled to a second input of the further regulator for providing a rising and falling control signal (Vramp) for control of the power amplifier.

RF power amplifier control

Growing community of inventors

Hohenstein, Germany

Klaus Pai