Motorola Solutions, Inc.

Daniel Grobe Sachs

Charles B Harmke

Ellis Arthur Pinder

German Borkhovik

Heng Leong Leong

Charles B Jaris

Robert A Zurek

Peter J Bartels

Javier Alfaro

Mark A Boerger

Stephen C Glass

Graeme Johnson

David J Ley

Kurt S Fienberg

Kuan Heng Lee

Joo Yih See

Liang Xu

Kok Khian Ng

Mern Keat Lee

Carlos Camps

Tzun Chuan Woo

Yoke Peir Lim

Sheau Wei Ch'ng

Xiang Rhung Ng

Mark A Prudden

Chirag N Patel

Sheau Wei Ch'Ng

Kathleen Culligan

A method and system for dynamically managing wireless pairing of a portable radio device and an accessory are provided. A multi-stage wireless pairing mode applies a first BT pairing stage that utilizes NFC and BT communication, while disabling low-priority, high-current communications of the portable radio device. The second BT pairing stage turns off the NFC pairing, maintains BT, and re-enables the low-priority, high-current communications. Any occurrence of a high-priority, high-current mission critical event disables the multi-stage pairing mode and services the event. User notifications and are dynamically managed to avoid user interference during the pairing.

Method and system for near-field pairing on a current limited portable communication device

An audio accessory with high and low impedance paths to a speaker is provided, and a radio therefor. The audio accessory comprises: a speaker; an audio interface to connect to a respective audio interface of the radio; a switching circuit comprising: high and low impedance paths; and a switch to connect the audio interface to the speaker via one of the high and low impedance paths, the switch initially connecting the audio interface to the speaker via the high impedance path. The accessory further comprises a data interface to connect to a respective data interface of the radio; and a controller to: in response to receiving, via the first data interface, from the radio, a message to control the switch to connect the audio interface to the speaker via the low impedance path, control the switch to connect the audio interface to the speaker via the low impedance path.

Audio accessory with high and low impedance paths to a speaker, and a radio for the audio accessory

An accessory interface () for an electronic accessory is provided. The accessory interface includes a microprocessor () that provides selectable data functionality. A configuration memory () is coupled to a connector () of the accessory interface via a unidirectional configuration interface (). The unidirectional configuration interface indicates the selectable data functionality to a portable radio. The portable radio presents data connectivity signals to first and second GPIO pins of the connector which represent either valid or invalid data configuration states. The configuration state is presented to a single ended one (SE) input port of the microprocessor. The microprocessor selects a data connectivity mode of operation in response to valid and invalid configurations being presented to the SEport. An accessory incorporating the accessory interface is able to interchangeably connect to different radios supporting different data connectivity modes of operation.

Accessory interface for a portable communication device

Techniques for secure pairing for devices with Near Field Communications (NFC) tags equipped with authentication are provided. In one aspect a device with a passive near field communication tag including a private key for authentication is provided. The device may send a challenge request to a host device including an active NFC tag via a wireless communication protocol. The challenge request may be combined with a shared secret value known to the device and the host device to create a challenge request seed. The challenge request seed may be combined with the private key to compute a verified challenge request response. A challenge request response may be received from the host device via the wireless communication protocol. The challenge request response and verified challenge request response may be compared to authenticate the host device to the device.

Secure pairing for devices with near field communication tags equipped with authentication

Systems and methods for beamforming audio signals received from a microphone array. One example embodiment provides an electronic device. The electronic device includes a microphone array and an electronic processor communicatively coupled to the microphone array. The electronic processor is configured to estimate an ambient noise level. The electronic processor is configured to compare the ambient noise level to a first threshold and a second threshold, the second threshold being lower than the first threshold. The electronic processor is configured to determine a beam pattern for the microphone array based on the comparison of the ambient noise level to the first threshold and the second threshold. The electronic processor is configured to apply the beam pattern to an audio signal received by the microphone array.

Adaptive white noise gain control and equalization for differential microphone array

A method and apparatus for mission critical standby of a portable communication device are disclosed. A portable communication device may include a primary processor for a first operating platform, a secondary processor for a second operating platform and communicatively coupled to the primary processor, and a power state manager that may have a first mode and a second mode. The power state manager may be configured to determine whether the primary processor is in a powered off state and sequence supply of power to the secondary processor. The first mode may allow the primary processor to monitor a power state of the secondary processor based on a determination that the primary processor is not in the powered off state and the second mode may enable the power state manager to monitor the power state based on a determination that the primary processor is in the powered off state.

Method and apparatus for mission critical standby of a portable communication drive

Methods and devices for connecting an accessory device to a connector port of a mobile communication device and automatically detecting an operational mode of the connector port are provided. The method includes implementing a USB Type-C device detection at an electronic processor of the mobile communication device and monitoring a first and second pin of the connector port for pull-up and pull-down signals from a connected accessory. The method also includes interrupting the USB Type-C device detection when a pull-down signal is detected and determining whether an accessory signal is detected at a third pin of the connector port. The method also includes implementing a LMR accessory detection when the accessory signal is detected and completing the USB Type-C device detection when the accessory signal is not detected.

Multimode audio accessory connector

A portable battery operated communication device provides a device interface formed of a plurality of exposed device contacts including a live voltage contact and a GND contact. Electronic circuitry associated with the interface is configured to operate in a non-linear mode using a low leakage path in response to electrolytic contamination across the two contacts. The interface is further configured to operate in a linear mode using a low current path during accessory attachment. Accessory detection is provided by a non-linear impedance device and sensor.

Apparatus and method for accessory detection in a portable communication device

Systems and methods for validating the operation of a transducer and an audio signal path to the transducer. An example method includes switching, with an audio switch, the audio signal path between an audio power amplifier and an analog-to-digital converter. The method includes routing an audio signal received from the transducer to the analog-to-digital converter when the audio power amplifier is not enabled. The method includes, upon receiving a button signal, processing, with an electronic processor, a digital version of the audio signal received from the analog-to-digital converter to generate a sample. The method includes comparing the sample to a reference audio sample. The method includes generating an alert when the sample does not match the reference audio sample.

Validating the operation of a transducer and an audio signal path

Improved connectivity between a portable communication device and an accessory is provided through the configuration of a USB type interface. Independent control of a mission-critical subsystem and auxiliary subsystems allow for mission-critical audio and push-to-talk (PTT) to be maintained even in the event of a fault condition within the system. The configurability aspect of the interface allows for additional mission-critical input features to be configured into independent mission-critical subsystems.

Method and apparatus for providing expanded interface operation between a portable communication device and an accessory

A camera flash system and method for the same. In one example, the system includes a camera including an image sensor, a plurality of lights, and an electronic processor. The camera is configured to capture an image frame. Each of the lights is configured to illuminate a region within the image frame. The electronic processor is configured to capture via the camera, while modulating an output of the plurality of lights, a first image frame and determine, using the image sensor, an object of interest within the first image frame. The electronic processor is further configured to identify a region of interest in which the object of interest is located based on the first image frame, identify, based on the region of interest, a subset of lights from the plurality of lights, and activate the subset of lights.

System and method for selective flash for camera

A portable electronic device including a battery coupled to an accessory circuit, a battery monitoring circuit coupled to the battery, and a processor connected to the battery monitoring circuit and the accessory circuit. The battery monitoring circuit determines an output current of the battery, and the processor receives an indication of the output current. The processor determines, based on the indication of the output current of the battery, a power characteristic of the accessory circuit, and control a power that is to be provided to the accessory circuit based on the power characteristic of the accessory circuit.

Methods and systems of managing power in a portable electronic device

System and method for controlling incoming acoustic signals at a portable accessory communication system provides improved management of noise levels. A plurality of acoustic microphone arrays (), formed of pairs of acoustic microphones, and a single vibration microphone () are enabled by pressing a push-to-talk (PTT) button (). An audio signal is input to the acoustic microphone arrays and a vibration signal is input to the single vibration microphone. The audio signal is detected and compared to the vibration signal to determine a high noise environment. The single vibration microphone () controls beam formation of the acoustic microphone arrays in high noise environments based on predetermined noise thresholds being exceeded and selecting an optimum acoustic microphone pair from the arrays to direct a null targeted at the noise source.

Method and apparatus for managing noise levels using push-to-talk event activated vibration microphone

A method and apparatus for operation of a remote speaker microphone over an expanded temperature range. By monitoring a temperature of the communication device, a temperature sensitive microprocessor can be disabled above a predetermined extreme temperature, thereby allowing control of an audio path of the communication device to be modified. Microphone and speaker signals of the communication device can be switched or rerouted to an electronic path capable of operating above the predetermined extreme temperature for expanded operation while previous microprocessor controlled digital and analog audio circuits are shut down.

Growing community of inventors

Elmhurst, IL, United States of America

Daniel Grobe Sachs