DSP Group Patent Applications

Efficient Smart Wideband Linear Hybrid CMOS RF Power Amplifier

Granted: September 22, 2016
Application Number: 20160276986
A novel and useful linear, efficient, smart wideband CMOS hybrid power amplifier that combined an analog linear amplification path and a digital power amplification (DPA) path. PA path control logic analyzes the input I and Q signals and determines which amplification paths to steer the input I and Q signals to. The analog linear amplification path comprises digital to analog converters for both I and Q paths and one or more analog linear power amplifiers. The digital power amplification…

CONFIGURABLE MULTIMODE MULTIBAND INTEGRATED DISTRIBUTED POWER AMPLIFIER

Granted: March 12, 2015
Application Number: 20150070097
A novel and useful configurable radio frequency (RF) power amplifier (PA) and related front end module (FEM) circuit that enables manipulation of the operating point of the power amplifier resulting in configurability, multimode and multiband operating capability. The configurable PA also provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The…

NON-INTRUSIVE QUALITY MEASUREMENTS FOR USE IN ENHANCING AUDIO QUALITY

Granted: January 29, 2015
Application Number: 20150030163
Methods and systems are provided for receiving by a first electronic device audio content, determining audio quality of the received audio content, which includes measuring and/or estimating quality related parameters associated with the received audio content, and communicating the quality related parameters to a second electronic device, from which the audio content was transmitted. The quality related parameters may be used to control audio related functions in the second electronic…

POWER SAVING TECHNIQUES FOR DISPLAYS WITH PIXEL-ADDRESSABLE INTENSITY

Granted: January 1, 2015
Application Number: 20150002554
A method for power management of a self-luminous display having a pixel addressable intensity, the method is executed by a device that comprises the self-luminous display. The method may include determining a selected area and a non-selected area of the self-luminous display; and reducing power consumption associated with the non-selected area.

DYNAMIC SENSITIVITY CONTROL FOR WIRELESS DEVICES

Granted: December 25, 2014
Application Number: 20140376453
A wireless communication device that includes an interface and a processor; wherein the interface is arranged to receive input signals; wherein the processor is arranged to: calculate an input signal's attribute; and determine an attribute of a collision avoidance scheme in response to the input signal's attribute.

USE OF VIBRATION SENSOR IN ACOUSTIC ECHO CANCELLATION

Granted: December 11, 2014
Application Number: 20140363008
Methods and systems are provided for acoustic echo cancellation in electronic devices. The echo cancellation may comprise applying, as a first step, echo cancellation filtering to an acoustic input obtained via an acoustic input element (e.g., microphone), and applying, as a second step, echo suppression to the acoustic input, wherein the echo suppression comprises suppressing residual echo in the acoustic input. The echo cancellation filtering may comprise identifying and/or filtering…

EQUALIZATION AND POWER CONTROL OF BONE CONDUCTION ELEMENTS

Granted: December 11, 2014
Application Number: 20140363033
Methods and systems are provided for controlling bone conduction, in which a bone conduction element may be used to output acoustic signals when it is in contact with a user. A bone conduction sensor may also be made in contact with the user, and used to obtain feedback relating to the outputting of the acoustic signals via the bone conduction element. The outputting of the acoustic signals may then be adaptively controlled based on processing of the feedback. The adaptive controlling…

ULTRA-LOW-POWER ADAPTIVE, USER INDEPENDENT, VOICE TRIGGERING SCHEMES

Granted: December 11, 2014
Application Number: 20140365225
Methods and systems are provided for ultra-low-power adaptive, user independent, voice triggering in electronic devices. A voice trigger, which may be configured as ultra-low-power function, may be run in an electronic device, when the electronic device transitions to a power-saving state, and may be used to control the electronic device based on audio inputs. The controlling may comprise capturing an audio input, and processing the audio input to determine when the audio input…

LOW POWER ACTIVATION OF A VOICE ACTIVATED DEVICE

Granted: November 13, 2014
Application Number: 20140337036
In a mobile device, a bone conduction or vibration sensor is used to detect the user's speech and the resulting output is used as the source for a low power Voice Trigger (VT) circuit that can activate the Automatic Speech Recognition (ASR) of the host device. This invention is applicable to mobile devices such as wearable computers with head mounted displays, mobile phones and wireless headsets and headphones which use speech recognition for the entering of input commands and control.…

AMPLIFIER LINEARIZATION USING PREDISTORTION

Granted: October 2, 2014
Application Number: 20140292412
A device and method of predistortion linearization that account for both EVM and spectral mask are disclosed. The device and method are based on transforming the predistorter optimization problem from the time domain to the frequency domain, and weighting the equations according to one or more desired objectives. One objective focuses on abiding by the spectral mask, whereas another objective focuses on improving the EVM.

Apparatus and Method for Correcting IQ Imbalance

Granted: July 24, 2014
Application Number: 20140204986
The subject matter discloses an apparatus residing within an RF chip, comprising: a detection unit for detecting IQ mismatch in an IQ signal; an analog calibration module comprising a first analog calibration mechanism for calibrating IQ mismatch in the phase component and a second analog calibration mechanism for calibrating IQ mismatch in the amplitude component; and a control unit for determining a calibration sequence of the IQ signal.

ADAPTIVE PROCESSOR

Granted: May 29, 2014
Application Number: 20140146927
A method and adaptive processor for estimating a reference signal, comprising receiving or determining a number of groups and respective group sizes, each group associated with a range of delay values of the reference signal, determining a multiplicity of coefficients, each coefficient associated with a specific delay of the reference signal, determining a multiplicity of weights, each weight associated with one of the groups, multiplying each sample of the reference signal having a…

ENHANCED STEREOPHONIC AUDIO RECORDINGS IN HANDHELD DEVICES

Granted: May 8, 2014
Application Number: 20140126726
Methods and systems are provided for enhanced stereo audio recordings in electronic devices. Stereophonic recording performance in an electronic device, using a first microphone and a second microphone in the electronic device, may be assessed; and processing of signals generated by the first microphone and the second microphone may be configured based on the assessed stereophonic recording performance. The configuring may comprises adaptively modifying the processing to enhance…

ADAPTIVE SYSTEM FOR MANAGING A PLURALITY OF MICROPHONES AND SPEAKERS

Granted: May 8, 2014
Application Number: 20140126729
Methods and systems are provided for adaptively managing a plurality of microphones and speakers in an electronic device. A mode of operation of the electronic device may be determined, and operation of at least one speaker may be managed, based on the determined mode of operation. The managing may comprise adaptively switching or modifying functions of the at least one speaker. For example, the at least one speaker may be configured to act as microphone or as vibration detector. Input…

DC-DC CONVERTER INCORPORATING TRIM CELL

Granted: March 27, 2014
Application Number: 20140084880
A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more…

LINEAR ROW ARRAY INTEGRATED POWER COMBINER FOR RF POWER AMPLIFIERS

Granted: March 27, 2014
Application Number: 20140085001
A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more…

Two Dimensional Quad Integrated Power Combiner for RF Power Amplifiers

Granted: March 27, 2014
Application Number: 20140085002
A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more…

Efficient Linear Integrated Power Amplifier Incorporating Low And High Power Operating Modes

Granted: March 27, 2014
Application Number: 20140085006
A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more…

ENVELOPE TRACKING SIGNAL GENERATOR INCORPORATING TRIM CELL

Granted: March 27, 2014
Application Number: 20140085008
A novel and useful radio frequency (RF) front end module (FEM) circuit that provides high linearity and power efficiency and meets the requirements of modern wireless communication standards such as 802.11 WLAN, 3G and 4G cellular standards, Bluetooth, ZigBee, etc. The configuration of the FEM circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes. The FEM circuit includes a power amplifier made up of one or more…

SYSTEM FOR ALLOWING CO-EXISTENCE OF TRANSCEIVERS

Granted: March 27, 2014
Application Number: 20140087667
A system may be provided and may include a first transmitter; a first antenna, coupled to the first transmitter; wherein the first transmitter is arranged to transmit via the first antenna first radio frequency (RF) signals; a first receiver; a second antenna, coupled to the first receiver; the second antenna differs from the first antenna; an RF acquisition module that is arranged to acquire second RF signals that are representative of the first RF signals; and an RF suppression module,…