Motorola Mobility LLC

Motorola Corporation

Kevin L Weirich

Daniel S Rokusek

David A Vanyek

Michael L Charlier

Gary L Christopher

Sang Oh

Peter A Kindinger

Sang Y Oh

Disclosed are methods and electronic communication devices, such as an in-car speaker device, that can receive via a downloading process, a communication address list from another device to the memory of the electronic communication device and can append a predetermined communication address to the communication address list. The predetermined communication address, which can be to an automated voice recognition based service, can be annunciated first. Also disclosed are methods and electronic communication devices for determining that a communication is with an automated voice recognition based service and then switching from a first call profile to a second call profile. Such a second profile can include different features such as a change of the frequency response of the audio signal of the electronic communication device, and/or reduction or elimination of the echo control, and/or a change in the noise control of the digital signal process.

Methods and devices for appending an address list and determining a communication profile

A transmitter device () receives an audio signal from an audio source device (), and transmits the audio signal at a low power over a commercial broadcast channel to a local receiver (). The transmitter device selects an initial channel by scanning the available spectrum, partitioned into sub-bands (-), and measuring the received signal strength in each channel. The channel having the lowest strength is used to set a threshold. The sub-band with most channels meeting the threshold is initially selected, and the channel in the initially selected sub-band with the lowest received signal strength is selected for initial use. A context-based weighting factor may be applied in selecting the initial channel or in selecting subsequent channels when the initial channel conditions degrade.

Method and apparatus for selecting a radio channel for transmitting an audio signal to a radio local receiver

A method () for controlling audio signals to an FM transmitter and a loudspeaker of a hands-free adapter first sends a first audio signal to the loudspeaker () and measures and records a loudspeaker audible artifact such as echo return loss () and/or echo tail length (). Next, the hands-free adapter sends a second audio signal to the FM transmitter and the loudspeaker () and measures and records an FM transmitter and loudspeaker audible artifact such as echo return loss () and/or echo tail length (). If the FM transmitter and loudspeaker audible artifact minus the loudspeaker audible artifact is greater than a threshold (), the hands-free adapter sends a third audio signal to the FM transmitter only (), and if the FM transmitter and loudspeaker audible artifact minus the loudspeaker audible artifact is not greater than the threshold, the hands-free adapter sends the third audio signal to both the FM transmitter and the loudspeaker ().

Method for controlling audio signals to an FM transmitter and a loudspeaker of a hands-free adapter

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Algonquin, IL, United States of America

Kevin L Weirich