Patent application number | Description | Published |
20130331049 | Low Power Multi-Band, Multi-Mode Transmitter - A transmitter includes a power amplifier driver connected with a first transformer and a second transformer. The first transformer is configured for a first band mode and the second transformer is configured for a second band mode. The power amplifier driver drives both the first transformer and the second transformer. | 12-12-2013 |
20140016729 | SAW-LESS RECEIVER INCLUDING AN IF FREQUENCY TRANSLATED BPF - A SAW-less receiver includes an FEM interface module, an RF to IF receiver section, and a receiver IF to baseband section. The RF to IF receiver section includes a mixing module, a mixed buffer section, and a frequency translated BPF (FTBPF) circuit module. The mixing module converts an inbound RF signal into an in-phase (I) mixed signal and a quadrature (Q) mixed signal. The mixed buffer section filters and buffers the I mixed signal and filter and buffer the Q mixed signal. The FTBPF circuit module frequency translates a baseband filter response to an IF filter response such that the FTBPF circuit module filters undesired signal components of the IF I signal and the IF Q signal to produce an inbound IF signal. The receiver IF to baseband section converts the inbound IF signal into one or more inbound symbol streams. | 01-16-2014 |
20140073280 | RECIPROCAL MIXING NOISE CANCELLATION SYSTEM - A system for cancellation of a reciprocal-mixing noise may comprise a down-converter mixer that may be configured to down convert a radio-frequency (RF) signal and to generate a baseband signal. The RF signal may include a desired signal and a blocker signal. A first signal path may be configured to receive the baseband signal and to generate a first signal. A second signal path may be configured to receive the baseband signal and to generate a second signal. A subtraction module may be configured to subtract the second signal from the first signal and to generate an output signal. The second signal may comprise the reciprocal-mixing noise, and the output signal may comprise the desired signal substantially free from the reciprocal-mixing noise. | 03-13-2014 |
20140140455 | SAW-LESS RECEIVER WITH RF FREQUENCY TRANSLATED BPF - A SAW-less receiver includes an interface, an RF to IF receiver section, and a receiver IF to baseband section. The RF to IF receiver section includes a frequency translated bandpass filter (FTBPF), a Low Noise Amplifier (LNA), and a mixing section. The FTBPF includes a switching network and a plurality of baseband impedances. The switching network is operable to couple the plurality of baseband impedances to the interface in accordance with a plurality of phase-offset RF clock signals to RF bandpass filter the inbound RF signal. The LNA amplifies the filtered inbound RF signal and the mixing section mixes the amplified inbound RF signal with a local oscillation to produce an inbound IF signal. The receiver IF to baseband section converts the inbound IF signal into one or more inbound symbol streams. Filtering may be prior or after amplification by the LNA. | 05-22-2014 |
20140153619 | REPARTITIONED TRANSCEIVER USING SILICON-ON-INSULATOR - A transceiver circuit including a digital-to-analog converter, a filter coupled to the digital-to-analog converter, a passive mixer coupled to the filter, via a buffer and a multi-stage power amplifier coupled to the passive mixer via a passive amplifier. A transmitter and method for amplifying a RF signal for transmission are also provided. | 06-05-2014 |
20140191811 | INTEGRATED CIRCUIT WITH CALIBRATED PULLING EFFECT CORRECTION - A calibration circuit includes a combinational gate configured to receive a voltage-controlled oscillator (VCO) output signal and a selected reference signal to detect a phase difference between the VCO output signal and the selected reference signal and generate an output binary signal, in which the VCO output signal has one or more unwanted frequency components. The calibration circuit also includes a loop filter configured to filter the output binary signal and generate a filtered calibration signal. The calibration circuit also includes an analog-to-digital converter configured to convert the filtered calibration signal from the analog domain to the digital domain and generate a converted calibration signal. The calibration circuit also includes a processor configured to compute the converted calibration signal and determine components of a baseband signal that cancels the one or more unwanted frequency components of the VCO output signal. | 07-10-2014 |
20140191812 | INTEGRATED CIRCUIT WITH CALIBRATED PULLING EFFECT CORRECTION - A frequency-control circuit includes a phase frequency detector configured to receive a reference frequency signal and generate an output detection signal. The phase frequency detector can be configured to detect a difference in phase and frequency between the reference frequency signal and a feedback of the output frequency signal. The frequency-control circuit also includes a current source applied to the output detection signal to form a correction voltage that is a function of a pulling signal having one or more unwanted frequency components. The frequency-control circuit also includes a loop filter configured to filter the output detection signal including the correction voltage and generate a control voltage signal. The frequency-control circuit also includes a voltage-controlled oscillator configured to receive the control voltage signal and generate an output frequency signal. | 07-10-2014 |
20140191815 | INTEGRATED CIRCUIT WITH CALIBRATED PULLING EFFECT CORRECTION - A frequency-control circuit includes a phase frequency detector configured to receive a reference frequency signal and generate an output detection signal. The phase frequency detector can be configured to detect a difference in phase and frequency between the reference frequency signal and a feedback of the output frequency signal. The frequency-control circuit also includes a frequency divider that is configured to apply a correction voltage to a feedback of the output frequency signal, the correction voltage being a function of a pulling signal having one or more unwanted frequency components. The frequency-control circuit also includes a loop filter configured to filter the output detection signal including the correction voltage and generate a control voltage signal. The frequency-control circuit also includes a voltage-controlled oscillator configured to receive the control voltage signal and generate an output frequency signal. | 07-10-2014 |
20140321576 | TRANSMITTER DIVERSITY WITH A PASSIVE MIXER NETWORK - A transmitter circuit with a passive mixer network includes a first outbound signal path configured to carry a first outbound signal. The transmitter circuit includes a second outbound signal path configured to carry a second outbound signal. The transmitter circuit includes N passive mixers coupled to the first and second outbound signal paths and configured to up-convert the first and second outbound signals from a first frequency to a second frequency based on a clock cycle, where N is a positive even integer. The first and second outbound signals are passed through the N passive mixers during each phase of 2*N phases in the clock cycle. The transmitter circuit also includes N radio frequency signal paths coupled to an output of respective ones of the N passive mixers and configured to receive the first and second outbound signals in the second frequency during each phase of the clock cycle. | 10-30-2014 |
20150065072 | LOW VOLTAGE TRANSMITTER - A wireless communications transmitter is divided into N binary weighted communication signal processing paths including both fixed and variable gain communication signal processing chains. Specific bit sequences are used to select a combination of fixed and variable gain signal processing paths to adjust to a desired transmitter output power. Alternately, high and low power communication signal processing paths are chosen as needed with the high power communication signal processing path including an odd order harmonic notch filter. | 03-05-2015 |
Patent application number | Description | Published |
20130322767 | POSE ESTIMATION BASED ON PERIPHERAL INFORMATION - A method for estimating camera pose includes: obtaining an image of a location captured via a camera, where the image includes a target object and edge line features outside of the target object; and calculating a pose of the camera with respect to the target object based on the edge line features. | 12-05-2013 |
20140104437 | SENSOR CALIBRATION AND POSITION ESTIMATION BASED ON VANISHING POINT DETERMINATION - Disclosed are systems, apparatus, devices, method, computer program products, and other implementations, including a method that includes capturing an image of a scene by an image capturing unit of a device that includes at least one sensor, determining relative device orientation of the device based, at least in part, on determined location of at least one vanishing point in the captured image of the scene, and performing one or more calibration operations for the at least one sensor based, at least in part, on the determined relative device orientation. | 04-17-2014 |
20140194137 | Method and/or system for obtaining signatures for use in navigation - Disclosed are systems, methods and techniques for obtaining round trip time (RTT) measurements from acquisition of signals at one or more mobile devices, the signals being transmitted by one or more transmitters; approximating locations of the one or more mobile devices while obtaining the RTT measurements; and combining the measurements to determine expected RTT signature values at discrete positions in the area based, at least in part, on the obtained RTT measurements and the approximated locations. | 07-10-2014 |
20140198227 | ORIENTATION DETERMINATION BASED ON VANISHING POINT COMPUTATION - Disclosed are systems, apparatus, devices, methods, computer program products, and other implementations, including a method that includes capturing an image of a scene by an image capturing unit of a device that includes an accelerometer, and determining orientation of the device based, at least in part, on determined location of a vanishing point (e.g., a single vanishing point) in the captured image of the scene and at least one measurement obtained from the accelerometer. | 07-17-2014 |
20140243017 | USER-IN-THE-LOOP ARCHITECTURE FOR INDOOR POSITIONING - Techniques for determining a position of a mobile device in an indoor environment are provided. An example method includes receiving a request for the position of the mobile device within the indoor environment from an application running on the mobile device, estimating the position of the mobile device within the indoor environment based on signals received from a plurality of wireless access points responsive to receiving the request for the position of the mobile device, identifying an ambiguity in estimating the position of the mobile device, identifying disambiguation information for resolving the ambiguity in the position, requesting disambiguation information for resolving the ambiguity associated with the position, receiving the disambiguation information for resolving the ambiguity associated with the position; resolving the ambiguity in estimating the position using the disambiguation information; and determining the position of the mobile device in the indoor environment. | 08-28-2014 |
20140266909 | METHODS FOR LCI DISAMBIGUATION - Various arrangements for performing location disambiguation are presented. A mobile device may receive a plurality of location hypotheses. The mobile device may also receive an indication of a disambiguation evaluation technique selected from a plurality of disambiguation evaluation techniques. The mobile device may perform the disambiguation evaluation technique using the plurality of location hypotheses. Using the disambiguation evaluation technique, a location hypothesis of the plurality of location hypotheses may be selected by the mobile device as corresponding to the mobile device's location. | 09-18-2014 |
20140274043 | ACCESS POINT SELECTION FOR ASSISTANCE DATA GENERATION - Methods, systems, computer-readable media, and apparatuses selecting access points and generating assistance data for access points is provided. In one embodiment a plurality of access points in a first area are identified, a location assistance quality value with each access point of the plurality of access points is associated with each access point, and a subset of the plurality of access points is selected based on the location assistance quality value of each access point of the plurality of access points. Assistance data is then generated for the selected access points. | 09-18-2014 |
20140364146 | SYSTEM AND METHOD FOR SHARING INDOOR LOCATION INFORMATION WITH ONE OR MORE APPLICATION PROGRAM MODULES WITHIN A PORTABLE COMPUTING DEVICE - A method and system for sharing indoor location information with one or more application program modules within a portable computing device (“PCD”) includes receiving an indoor location data request and determining if a location service is currently being executed by the PCD. If the location service is not being executed, it is determined if a location engine of the PCD has been installed. If the location engine of the portable computing device has not been installed, then the code for the location engine is downloaded from a communications network. Next, the location service may be executed once the location engine has been installed. It is determined if the indoor location data being requested is present in a memory element of the PCD. If the indoor location data being requested is not present in the memory element of the PCD, then the indoor location data is downloaded from the communications network. | 12-11-2014 |
20150052460 | METHOD FOR SEAMLESS MOBILE USER EXPERIENCE BETWEEN OUTDOOR AND INDOOR MAPS - Methods, systems, computer-readable media, and apparatuses for integration of an outdoor map and an indoor map associated with a venue using a mobile device are presented. The method may comprise presenting the outdoor map associated with an outdoor map application, wherein the outdoor map includes an area associated with the venue. Additionally, the method may comprise overlaying the indoor map on the area of the outdoor map associated with the venue, wherein the indoor map is associated with an indoor map application. Furthermore, the method may comprise receiving a first indication of a first event associated with the venue. Moreover, in response to receiving the first indication of the first event, the method may comprise allowing the indoor map application to control an aspect associated with the presentation of the outdoor map with the overlaid indoor map. | 02-19-2015 |
20150080024 | Dynamic position partitioning for better user experience in indoor positioning - Systems, apparatus and methods for determining a location of a mobile device are presented. Often a mobile device requests assistance data from a location server. If the mobile device expects a significant delayed response in receiving the assistance data, the mobile device may determine a seed location or rough location estimate from a server. The mobile device may also request a map to display and/or a data structure for its estimator. The mobile device may preload the estimator with the rough location estimate and/or the data structure. After preloading, the estimator determines a location of the mobile device. Also, the mobile device may show the map to a user via a display. | 03-19-2015 |
20150105098 | METHOD AND APPARATUS FOR DETECTING LOCATION CHANGES AND MONITORING ASSISTANCE DATA VIA SCANNING - Example methods, apparatuses, or articles of manufacture are disclosed herein that may be utilized, in whole or in part, to facilitate or support one or more operations or techniques for detecting location changes and monitoring assistance data via scanning for use in or with a mobile device. Briefly, in accordance with at least one implementation, a method may include obtaining, at a mobile device, a rough estimate of a location of the mobile device; identifying a plurality of transmitters within a signal acquisition range of the roughly estimated location; transmitting probe requests addressed to at least some of the transmitters; and selectively initiating a passive scan at a receiver of the mobile device if a number of responses to the probe requests received from the transmitters is less than a threshold number. | 04-16-2015 |
20150133145 | METHODS AND APPARATUSES FOR USE IN DETERMINING AN ALTITUDE OF A MOBILE DEVICE - Various methods, apparatuses and articles of manufacture are provided which may be used in determining an altitude of a mobile device. For example, an electronic device may select a subset of reporting mobile devices located within a particular environment, estimate a reference parameter that is indicative, at least in part, of a reference altitude within the particular region, e.g., based, at least in part, on one or more altitude measurements for one or more of the reporting mobile devices, and initiate transmission of the reference parameter to at least a target mobile device. In another example, a mobile device may obtain such a reference parameter, and estimate its altitude based, at least in part, on the reference parameter. | 05-14-2015 |
20150178924 | SENSOR CALIBRATION AND POSITION ESTIMATION BASED ON VANISHING POINT DETERMINATION - Disclosed are systems, apparatus, devices, method, computer program products, and other implementations, including a method that includes capturing an image of a scene by an image capturing unit of a device that includes at least one sensor, determining relative device orientation of the device based, at least in part, on determined location of at least one vanishing point in the captured image of the scene, and performing one or more calibration operations for the at least one sensor based, at least in part, on the determined relative device orientation. | 06-25-2015 |
20150192414 | METHOD AND APPARATUS FOR POSITIONING WITH ALWAYS ON BAROMETER - Methods, apparatuses, and non-transitory processor-readable media of the present disclosure are presented for efficiently executing applications based on pressure sensor data. In some embodiments, a method includes monitoring pressure, and determining a rate of change in the pressure over time exceeds a predetermined rate-of-pressure-change threshold. The method further includes subsequently determining that the rate of change in the pressure over time no longer exceeds the predetermined rate-of-pressure-change threshold. The method further includes determining a change in pressure has exceeded a predetermined pressure-change threshold, and performing floor disambiguation. | 07-09-2015 |
20150237164 | IMPROVING OR OPTIMIZING A RADIO HEATMAP VIA FEEDBACK TO AGENTS - Example methods, apparatuses, or articles of manufacture are disclosed herein that may be utilized, in whole or in part, to facilitate or support one or more operations or techniques for improving or optimizing a radio heatmap via feedback to one or more agents for use in or with a mobile communication device. | 08-20-2015 |
20150264519 | EFFICIENT GENERATION AND UPDATE OF HEAT MAPS - Methods and apparatuses are presented for generating and updating heat maps for terrestrial wireless transceivers located in an area or venue. According to some embodiments, a method may include obtaining, by a mobile device, first signal data for a terrestrial transceiver and generating, by the mobile device, a transceiver heat map using the first signal data. The method may further include displaying, by the mobile device, a request to gather additional signal data for the terrestrial transceiver and obtaining, by the mobile device, second signal data for the terrestrial transceiver. The method may further include generating, by the mobile device, an updated transceiver heat map using the second signal data and displaying, by the mobile device, the updated transceiver heat map. | 09-17-2015 |