Qualcomm Incorporated

James A Hutchison

Rotem Cooper

Chienchung Chang

Way-Shing Lee

Paul T Williamson

Jan C Ault

John Richard Sorenson

Eli Yona

Karthick Chinnaswami

Graham Smith

George Gaozhi Pan

Steven C Den Beste

Robert Opalsky

Hanchi David Huang

A radio receiver has a low noise amplifier. The low noise amplifier is enabled. If a predicted level of interference is expected to produce an acceptable bit error rate or other signal error measurement, the low noise amplifier is set to a &ldquo;low&rdquo; linearity level. If the predicted level of interference is not expected to be acceptable, the low noise amplifier is adjusted to a &ldquo;high&rdquo; level of linearity. The level of linearity required is determined by checking one or more prediction criteria: the mobile station's current operating mode, the strength of a received signal, the strength of a signal transmitted by the mobile station, the current level of interference, an acceptable level of interference, and whether the low noise amplifier is enabled or bypassed. Each of the prediction criteria may not be weighted equally. The determination is repeated as the prediction criteria change.

Control of receiver immunity to interference by controlling linearity

A method and apparatus for communicating both voice and control data between a communication device (such as a cellular phone) and an external accessory (such as a hands-free kit) over a data bus. The method includes formatting a sequence of bits into a repeating sequence of first time slots and second time slots, transmitting the voice data in the first time slot, and transmitting the control data in the second time slot. Notably, a first bit of each of the second time slots comprises a clock bit that alternates between a high value and a low value (e.g. a '1' or a '0') as between consecutive second time slots.

Communication protocol between a communication device and an external accessory

Growing community of inventors

San Dieog, CA, United States of America

James A Hutchison