Telefonaktiebolaget Lm Ericsson (publ)

Anna-Karin Stenman

Christian Elgaard

Janne Peltonen

Mats Petter Pettersson

Torbj&ouml;rn G&auml;rdenfors

Torbjörn Gärdenfors

Mats Petterson

An oscillator circuit comprises a crystal oscillator arranged to generate an oscillation signal, a bias current generator arranged to supply a bias current to the crystal oscillator, and a feedback stage arranged to generate a feedback signal in response to an amplitude of the oscillation signal reaching an amplitude threshold. The bias current generator is arranged to: in response to a supply of power to the oscillator circuit being switched on, generate the bias current at an increasing level commencing from a first level; in response to the feedback signal, terminate the increasing; and during subsequent oscillation of the crystal oscillator, supply the bias current at a second level dependent on a final level of the bias current reached when the increasing is terminated.

Oscillator circuit with bias current generator

An oscillator circuit () comprises a crystal oscillator () arranged to generate an oscillation signal, a bias current generator () arranged to supply a bias current to the crystal oscillator (), and a feedback stage () arranged to generate a feedback signal in response to an amplitude of the oscillation signal reaching an amplitude threshold. The bias current generator () is arranged to: in response to a supply of power to the oscillator circuit () being switched on, generate the bias current at an increasing level commencing from a first level; in response to the feedback signal, terminate the increasing; and during subsequent oscillation of the crystal oscillator (), supply the bias current at a second level dependent on a final level of the bias current reached when the increasing is terminated.

A system enabling a mobile station to provide combined mobile telephony and remote control terminal functionalities is disclosed. A mobile station includes functionalities enabling the mobile station to communicate with a Public Land Mobile Network. Furthermore, command and communication and local communications functionalities enable the mobile station to remotely control a variety of peripheral devices through user provided inputs.

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Hjärup, Sweden

Anna-Karin Stenman