Patent application number | Description | Published |
20100017124 | Location and path-map generation data acquisition and analysis systems - A device, system, and method for generating location and path-map data for displaying a location and path-map is disclosed. The device includes a first set of sensors for generating a plurality of first data signals with respect to an attitude of an object; a second set of sensors for generating a plurality of second data signals with respect to the attitude of the object; an imaging device for generating a plurality of third data signals that include a most significant feature, which is disposed in at least two images of the imaging device; and at least one processing device that is adapted to calculate a heading direction (bearing) of the device using the plurality of first data signals and the plurality of second data signals; to calculate a distance traveled along the heading direction using the plurality of third data signals; and to translate the calculated heading direction and calculated distance traveled into a leg or portion of a leg of a path-map for visual display on a two- or three-dimensional system. | 01-21-2010 |
20100161084 | MAGNETIC SENSOR FOR USE WITH HAND-HELD DEVICES - The use of magnetic field sensing to perform sophisticated command control and data input into a portable device is disclosed. A magnetic field sensor is embedded or fixedly attached to a portable device to measure changes in the magnetic field strength and/or direction accompanying movement, motion or tilt of the device in one-, two- or three-dimensions when the portable device is used to air-write or make gestures. | 06-24-2010 |
20110005314 | ION DISCHARGE GYROSCOPE - An ion discharge gyroscope measures rotational motion and linear acceleration by generating symmetrical ion jet streams and measuring respective amounts of the jet streams impinging on detectors located so as to intercept the ion jet streams. The ion jet streams will be diverted by operation of the Coriolis effect and the differences in the amount of each ion jet stream impinging on the detectors is an indication of rotational motion and linear acceleration. In one embodiment, the ion jet streams are heated and the respective temperatures of the detectors are measured. In another embodiment, the amounts of current flowing through each detector, as contributed by the ion jet streams, are measured and used to determine rotation and acceleration. | 01-13-2011 |
20110227569 | MAGNETOMETER - A magnetometer with only a SET operation for initiating a magnetic orientation within a magnetic field sensor based on anisotropic magnetoresistive (AMR) technology. Within the magnetometer, the relative orientations of the respective X, Y and Z axes detectors are maintained by a package in which all detectors are mounted on a single assembly with the Z axis sensor displaced and held orthogonal to the other two sensors by potting material. Shorting bars on respective barber pole structures are provided with a geometry that allows for closer placement of adjacent barber poles to one another. The barber pole structures are deposited in a nested orientation which provides for balanced resistance legs in a Wheatstone bridge construction. | 09-22-2011 |
20110264393 | SYSTEM AND METHOD FOR CALIBRATING A THREE-AXIS ACCELEROMETER - An integrated calibration system and process for a three-axis (X, Y, Z) accelerometer estimates Z-axis bias, Z-axis bias drift and determines X, Y, and Z-axes error sources based on measurements taken when the accelerometer is static, i.e., sensing only the earth's gravitational acceleration. Optimal on-the-fly error estimates for the three-axis accelerometer are obtained so that the measurements provided by the three-axis accelerometer remain error-free. | 10-27-2011 |
20110307213 | SYSTEM AND METHOD OF SENSING ATTITUDE AND ANGULAR RATE USING A MAGNETIC FIELD SENSOR AND ACCELEROMETER FOR PORTABLE ELECTRONIC DEVICES - A system for determining motion information including attitude and angular rate of a dynamic object. The system includes a magnetic-field sensing device to measure in the body coordinate frame of reference an intensity and/or direction of a magnetic field in three substantially orthogonal directions; an acceleration-sensing device adapted to measure total acceleration of the object in the body coordinate frame of reference; and a processor adapted to calculate attitude and angular rate by combining total acceleration measurement data and magnetic field measurement data with the kinematic model in a filter. | 12-15-2011 |
20120125103 | Z-AXIS CAPACITIVE ACCELEROMETER - A Z-axis capacitive accelerometer includes a substrate, a capacitance sensing plate, a proof mass and at least one pair of spring beams. The capacitance sensing plate includes two symmetrical sense areas to create differential capacitive measurement. A decoupling structure separates the proof mass and the capacitance sensing plate and their rotational motions from each other. In the proposed Z axis capacitive accelerometer, the distance of the capacitance sensing plate relative to its rotation axis is considerably increased, thereby effectively enhancing the sensitivity when measuring the Z-axis acceleration. | 05-24-2012 |
20120206137 | MONOLITHIC TRI-AXIS AMR SENSOR AND MANUFACTURING METHOD THEREOF - A monolithic tri-axis anisotropic magnetoresistive (AMR) sensor and the method of manufacturing of the AMR sensor are presented. In one embodiment, the monolithic tri-axis AMR sensor includes (a) a substrate, (b) a first horizontal direction sensor disposed on the substrate, (c) a second horizontal direction sensor disposed on the substrate, (d) a third horizontal direction sensor disposed on the substrate, and (e) a flux concentrator disposed on the third horizontal direction sensor, wherein the flux concentrator is in cooperation with the third horizontal direction sensor to realize a function of a Z-axis sensor, such that the Z-axis direction can be effectively measured. The integration of the tri-axis AMR sensor is therefore accomplished. In addition, the integrated tri-axis AMR sensor has low production cost and improved reliability. | 08-16-2012 |
20130249542 | FOLDABLE SUBSTRATE - A foldable substrate is provided that includes a first substrate portion with a first upper surface and a second substrate portion with a second upper surface. A foldable bridge portion couples the first substrate portion to the second substrate portion. The foldable bridge portion includes a coupling strip that extends from the first substrate portion to the second substrate portion with a gap corresponding to a portion of the coupling strip where the gap is defined between the first and second substrate portions by removing portions of a starting wafer substrate. The first and second portions, in one embodiment, include magnetic field sensors and the foldable bridge portion can be bent to arrange the two portions at a predetermined angle to one another. Once bent, the sensor package can be incorporated into a magnetic field sensor assembly to be integrated with other control circuitry. | 09-26-2013 |
20140130595 | MONOLITHIC SENSOR PACKAGE - A unitary sensor package having a magnetometer, accelerometer and gyroscope incorporated into a monolithic structure composed of one or more wafers or substrates. Pressure and/or other types of sensors can also be incorporated in the monolithic structure. | 05-15-2014 |