ELECTRICAL TESTING AND FEEDTHROUGH CANCELLATION FOR AN ACOUSTIC SENSOR
Granted: October 8, 2015
Application Number:
20150289073
A method and circuit for testing an acoustic sensor are disclosed. In a first aspect, the method comprises using electro-mechanical features of the acoustic sensor to measure characteristic of the acoustic sensor. In a second aspect, the method comprises utilizing an actuation signal to evaluate mechanical characteristics of the acoustic sensor. In a third aspect, the method comprises using a feedthrough cancellation system to measure a capacitance of the acoustic sensor. In the fourth…
MICROELECTROMECHANICAL SYSTEMS (MEMS) MICROPHONE HAVING TWO BACK CAVITIES SEPARATED BY A TUNING PORT
Granted: October 8, 2015
Application Number:
20150289045
Microelectromechanical systems (MEMS) microphones associated with a tunable back cavity are described. Provided implementations can comprise a MEMS acoustic sensor element associated with a first back cavity, which first back cavity can be separated and/or acoustically coupled by a tuning port to a second back cavity. In addition, various physical and acoustic filtering configurations of MEMS microphones and tunable back cavities are described.
SYSTEMS AND METHODS FOR SENSOR BASED AUTHENTICATION IN WEARABLE DEVICES
Granted: October 8, 2015
Application Number:
20150288687
Systems and methods are disclosed for providing sensor based authentication of a user's identification and may be used to control access. In this manner, a user's identity may be used to control access to any suitable location, space or resource, either locally or remotely. A combination of functions involved in authenticating a user's identification may be performed by one or more discrete devices and include obtaining sensor data from at least one sensor that is physically associated…
SYSTEMS AND METHODS FOR GUIDING A USER DURING CALIBRATION OF A SENSOR
Granted: October 8, 2015
Application Number:
20150286279
This disclosure provides techniques for guiding a user through a calibration operation of a mobile device having a motion sensor. The user may receive one or more visual cues to aid the user in positioning the device in one or more desired orientations or patterns of motion. The visual cues may be with respect to a virtual three dimensional environment that is responsive to a determined orientation of the device.
SYSTEMS AND METHODS FOR SENSOR CALIBRATION
Granted: October 8, 2015
Application Number:
20150285835
Systems and methods are disclosed for calibrating a sensor. A recursive least squares estimation may be performed to update a mean and a covariance matrix for samples of data from a motion sensor and a bias estimate for the motion sensor may be derived from the mean and covariance matrix. The motion sensor may be an gyroscope, an accelerometer or a magnetometer.
DIFFERENTIAL SENSING ACOUSTIC SENSOR
Granted: September 24, 2015
Application Number:
20150266723
A MEMS device includes a first plate coupled to a second plate and a fixed third plate formed on a first substrate. The first and second plates are displaced in the presence of an acoustic pressure differential across the surfaces of the first plate. The MEMS device also includes a first electrode formed on the third plate and a second electrode formed on the second substrate. The first, second plate, and third plates are contained in an enclosure formed by a first and second substrates.…
IMAGE STABILIZATION USING LIGHT SENSORS
Granted: September 17, 2015
Application Number:
20150264263
A method and system for image stabilization is disclosed. The image stabilization system includes a first pair of light sensors placed along an axis relative to a first axis, each light sensor is configured to provide a signal indicative of intensity of light received by the light sensor. The image stabilization system further includes a first directional light filter configured to selectively permit passage of incident light to the first pair of light sensors based on an angle of the…
MEMS DEVICE WITH SPLIT PAD PACKAGE
Granted: August 6, 2015
Application Number:
20150217991
A device and a microphone are disclosed. The device comprises a circuit board and a plurality of pads on the circuit board, wherein at least one of the plurality of pads is split into at least two portions that are electrically isolated from each other. The microphone comprises a circuit board, a seal structure on the circuit board, and a plurality of pads on the circuit board, wherein at least one of the plurality of pads is split into at least two portions that are electrically…
ACOUSTIC SENSOR RESONANT PEAK REDUCTION
Granted: July 30, 2015
Application Number:
20150214912
A MEMS acoustic sensor includes a transducer with a frequency response with a gain peak, and a peak reduction circuit with a frequency response and coupled to the transducer. The frequency response of the peak reduction circuit causes attenuation of the gain peak.
BACK CAVITY LEAKAGE TEST FOR ACOUSTIC SENSOR
Granted: July 9, 2015
Application Number:
20150195665
An acoustic sensor system has an acoustic sensor with a cavity, a cavity leakage, and a cavity pressure. The acoustic sensor system further has a test controller coupled to the acoustic sensor that causes a change in the cavity pressure. A response of the acoustic sensor to the change in the cavity pressure is used to measure the cavity leakage.
SYSTEMS AND METHODS FOR PROCESSING SENSOR DATA WITH A STATE MACHINE
Granted: July 9, 2015
Application Number:
20150193232
A state machine may be implemented in hardware by representing each state with one operational code (opcode) such that each opcode may be read from memory in sequential order. The state machine includes a plurality of states linked by at least one transition triggered by data input. The data input may be motion sensor data such that the state machine is configured to recognize a pattern of motion corresponding to a gesture or an activity.
Systems and Methods for Initiating Calibration of a Sensor
Granted: July 9, 2015
Application Number:
20150192440
A device having a sensor may be calibrated by obtaining a condition of a device incorporating the sensor and initiating a calibration operation for the sensor based, at least in part, on the condition of the device. The condition may be a motion state, a charging state, a pattern of motion, an orientation, a location, a surrounding environment measurement, sensor usage, an age of calibration, a quality of calibration, or any combination. Further, the sensor may be an accelerometer, a…
WEARABLE DEVICE ASSISTING SMART MEDIA APPLICATION AND VICE VERSA
Granted: June 25, 2015
Application Number:
20150179050
A system includes a wearable device connected to a user and a smart media in remote communication with the wearable device. The wearable device is operable to track movement of the user and transmit the track movement information to the smart media. The smart media is operable to receive the track movement information and to use the received track movement information in an independent application.
METHOD AND SYSTEM FOR AUTOMATICALLY GENERATING LOCATION SIGNATURES FOR POSITIONING USING INERTIAL SENSORS
Granted: May 28, 2015
Application Number:
20150149085
A device, method and computer readable medium is disclosed for generating a plurality of location signature is disclosed. The method includes seeding a device with an initial position and utilizing an inertial positioning system to propagate user position, and generating location signatures.
MICROPHONE ON PRINTED CIRCUIT BOARD (PCB)
Granted: May 28, 2015
Application Number:
20150146887
A MEMS device includes a MEM-CMOS module having a CMOS chip and a MEMS chip. The MEMS chip includes a port exposed to the environment. The MEMS device further includes a printed circuit board (PCB) with an aperture, wherein the MEMS-CMOS module is directly mounted on the PCB.
DEVICE CONTROL USING A WEARABLE DEVICE
Granted: May 28, 2015
Application Number:
20150145653
A system and method are directed to controlling multiple devices using a common control unit for an established context. More particularly, the system and method are directed to controlling multiple devices using a common control unit such as a wearable device which controls activities for an established context. The control unit may control multiple devices where for a particular situation or context, a controlling activity, such as gesturing, enables the control unit to control and…
ACTIVITY DETECTION AND ANALYTICS
Granted: May 7, 2015
Application Number:
20150127298
A method and system for activity detection and analytics are disclosed. The method comprises determining a context and providing the determined context and one or more outputs from at least one sensor to an analytics engine to provide analytics results. The system includes at least one sensor and a processing system coupled to the at least one sensor, wherein the processing system includes an analytics engine that is configured to receive a determined context and one or more outputs from…
MULTI-FUNCTION PINS FOR A PROGRAMMABLE ACOUSTIC SENSOR
Granted: May 7, 2015
Application Number:
20150125004
A programmable acoustic sensor is disclosed. The programmable acoustic sensor includes a MEMS transducer and a programmable circuitry coupled to the MEMS transducer. The programmable circuitry includes a power pin and a ground pin. The programmable acoustic sensor also includes a communication channel enabling data exchange between the programmable circuitry and a host system. One of the power pin and the ground pin can be utilized for data exchange.
INTEGRATED CMOS BACK CAVITY ACOUSTIC TRANSDUCER AND THE METHOD OF PRODUCING THE SAME
Granted: April 16, 2015
Application Number:
20150102390
A MEMS device includes a MEMS substrate with a movable element. Further included is a CMOS substrate with a cavity, the MEMS substrate disposed on top of the CMOS substrate. Additionally, a back cavity is connected to the CMOS substrate, the back cavity being formed at least partially by the cavity in the CMOS substrate and the movable element being acoustically coupled to the back cavity.
REDUCTION OF CHIPPING DAMAGE TO MEMS STRUCTURE
Granted: March 19, 2015
Application Number:
20150076631
A MEMS (microelectromechanical systems) structure comprises a MEMS wafer. A MEMS wafer includes a cap with cavities bonded to a structural layer through a dielectric layer disposed between the cap and the structural layer. Unique configurations of MEMS devices and methods of providing such are set forth which provide for, in part, creating rounded, scalloped or chamfered MEMS profiles by shaping the etch mask photoresist reflow, by using a multi-step deep reactive ion etch (DRIE) with…
