Nokia Corporation

Nokia Mobile Phones Limited

Risto Pirhonen

Olli Toivo Talvitie

Jukka Eerikäinen

Urpo Nokkonen

Antti Hentinen

Henri V&auml;h&auml;-Ypy&auml;

Tiina H&auml;m&auml;l&auml;inen

Jane Lehtilä

Vesa Peili

A lighting control method and an electronic device. The lighting of the display of the device can be adjusted according to ambient lighting. Information on the ambient lighting is transmitted to a light-sensitive component of the device through a light guide that is integrated as part of a protective display window.

Lighting control method and electronic device

The invention relates to a method for measuring a radio frequency signal in a wireless station (). In this method, radio frequency power is measured by means of testing equipment (), which includes at least a testing apparatus (), a measuring head () and means () for transmitting electrical signals between the testing apparatus () and measuring head (). The wireless station () includes at least one radio part (), a wiring board (), an antenna () and switching means (). This test switch has at least an first position, in which the radio frequency signal is directed between the radio part () of the wireless station () and the antenna (), and a second position, in which the radio frequency signal is directed between the radio part () of the wireless station () and the testing apparatus () via the switching means () and the measuring head (). A switching aperture () has been formed in the wiring board essentially at least partly at the location of the switching means (), through which aperture the switching means () is switched to the second position with the measuring head ().

System for measuring a radio frequency signal in a wireless station and a wiring board switch

The present invention relates to proximity sensors. It also relates to proximity sensors in electronic devices using lightguides. More specifically the invention relates to a simple self monitoring of optical proximity sensors. This can be achieved according to one embodiment of the present invention by a system of lightguides for the use in proximity sensor. The lightguide system comprises a transceiver lightguide to direct-transmitter to a predefined direction, and a receiver lightguide to direct transmitter light reflected from an object towards a receiver, where the transceiver and receiver lightguides comprise diffracting surfaces to direct a part of-the light from the transmitter as a self monitoring beam in a direction towards a receiver.

Method and apparatus for self-monitoring of proximity sensors

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Tampere, Finland

Risto Pirhonen