Motorola Solutions, Inc.

Motorola Corporation

Daniel Jose Landron

Kurt S Fienberg

Javier Alfaro

Kevin D Elliott

Hua Li

David Corvino

Chin Pan Wong

David R Heeschen

Douglas Eugene Ross

Mahesh Babubhai Bhuta

Gordon W Chiu

Vincent Vigna

Naraharisetti Venkata Srikanth Siddardha

Reliable detection of a microphone failure along with corrective action are provided for a portable communication device having multiple microphones. The faulty microphone detection uses a correlation based metric between three (3) or more microphones. The approach is based on full cross correlation, including phase as well as magnitude, between unique microphone pairs for isolating a faulty microphone condition. The approach allows for the determination of precisely which microphone has failed and minimizes false triggers under windy conditions within a microphone array.

Fault detection for microphone array

A portable communication system () maintains mission critical functionality. An accessory () and a handset () are tethered and interoperate such that the accessory operates as the primary controlling device and the handset operates as a secondary device. The accessory () contains a main applications processor () that handles non-mission critical functions. The accessory further contains a mission critical processor () for handling mission critical functions of transmit and receive audio as well as PTT and emergency. In response to a failure of the mission critical processor (), the mission critical functions are maintained by handing over the mission critical functions to the non-controlling device in a manner transparent to the user. The handover is triggered in response to status changes of the mission critical processor or as a result of battery depletion. Audio paths are re-routed through backup paths () negating reliance on processors of the accessory ().

Method and apparatus for maintaining mission critical functionality in a portable communication system

A voice channel data processorand corresponding methodoperable in a wireless communications unit'sreceiver and transmitter to facilitate data transmission on a voice channel includes an encoderfor encoding data traffic as a transmit voice frame having a predetermined vocoder parameter and inserting the transmit voice frame into a stream of transmit voice frames with voice traffic and further includes a decoderfor parsing a stream of received voice frames to obtain a vocoder parameter for each, comparing the vocoder parameter for each received frame to the predetermined vocoder parameter, routing the received voice frame for processing as data traffic when the comparison is favorable, and otherwise routing the received voice frame for processing as voice traffic.

Method and apparatus for transferring data over a voice channel

A device () that can perform voice recognition operates with a removable media or memory () that is used to store information records (). To save memory space in the removable media, voice recognition tags (), used to perform voice recognition, are not stored in the removable media, but are stored in the device. Since the media is removable, the device must check to make sure the records stored in the media are usable with the voice recognition tags. This is accomplished by generating a key () whenever a new voice recognition tag is trained (). The key is stored in the device, or in the media, or both. Upon initialization of the device, (), the device searches () the media for records and checks () to see if the key corresponding to the record matches any keys in the device. When a match is found the record is associated () with the corresponding voice recognition tag. Voice recognition tags with no corresponding records are deleted or ignored. When a record with no corresponding voice recognition tag is found, the device may prompt the user to train a new voice recognition tag () for the record.

Method of associating voice recognition tags in an electronic device with records in a removable media for use with the electronic device

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Plantation, FL, United States of America

Daniel Jose Landron