| Patent application number | Description | Published |
|---|
| 20090006020 | COMPASS SENSOR UNIT AND PORTABLE ELECTRONIC DEVICE - In a compass sensor unit, an azimuth data computing method is carried out by the steps of: inputting a signal from a geomagnetic sensor to measure magnetic field; determining whether to store measurement data of the magnetic field based on a distance from the last stored measurement data; calculating an offset value based on the stored data; making a comparison for each component of a plurality of measurement data used for calculating the offset value, and judging the offset value to be valid when a difference between the maximum and minimum values of each component is a given value or more; updating the already stored offset value to the offset value judged to be valid; and correcting newly provided measurement data by the updated offset value to compute azimuth data. | 01-01-2009 |
| 20090027048 | Three-Axis Magnetic Sensor and Method for Manufacturing the Same - In the three-axis magnetic sensor of the present invention, a plurality of magnetoresistive effect element bars are connected in series by means of bias magnets to constitute magnetoresistive effect elements, and magnetoresistive effect elements of the X-axis sensor and those of the Y-axis sensor are formed on a flat surface parallel to the flat surface of the substrate. The sensitivity direction of magnetization is a direction vertical to the longitudinal direction of each of the magnetoresistive effect element bars, and magnetoresistive effect elements of the X-axis sensor and those of the Y-axis sensor are formed in such a way that the magnetization directions are orthogonal to each other. Further, magnetoresistive effect elements of the Z-axis sensor are formed on a tilted surface of the projection projected from the flat surface of the substrate in such a way that the magnetization direction is inside the tilted surface. The Z-axis sensor is provided in such a way that the sensitivity direction is vertical to the longitudinal direction of the magnetoresistive effect element bar. | 01-29-2009 |
| 20090082966 | NAVIGATION DEVICE - A navigation device is designed to calculate the present position thereof based on the output data of a GPS unit in association with an acceleration sensor and a magnetic sensor. When the absolute value of the acceleration detected by the acceleration sensor is above the prescribed threshold, the navigation device calculates the present position based on the previously detected values of the position and running speed stored in memory. When the absolute value of the acceleration is below the prescribed threshold, the navigation device detects the uniform motion applied thereto; hence, it calculates the present position based on the bearing detected by the magnetic sensor as well as the previously detected values of the position and running speed stored in the memory with high precision irrespective of the offset error of the acceleration sensor. | 03-26-2009 |
| 20090088975 | NAVIGATION DEVICE - In a navigation device, the position P | 04-02-2009 |
| 20100314972 | PIEZOELECTRIC THIN FILM ELEMENT AND PIEZOELECTRIC THIN FILM DEVICE INCLUDING THE SAME - A piezoelectric thin film element is provided, including on a substrate: a piezoelectric thin film expressed by a general formula (Na | 12-16-2010 |
| 20100320871 | PIEZOELECTRIC THIN FILM ELEMENT AND MANUFACTURING METHOD OF THE PIEZOELECTRIC THIN FILM ELEMENT, PIEZOELECTRIC THIN FILM DEVICE - To provide a piezoelectric thin film element capable of improving piezoelectric characteristics and realize a piezoelectric thin film device with high performance and high reliability, comprising: a substrate; and a piezoelectric thin film formed on the substrate by a sputtering method, with perovskite oxide expressed by (Na | 12-23-2010 |
| 20100320874 | PIEZOELECTRIC THIN FILM ELEMENT, AND PIEZOELECTRIC THIN FILM DEVICE - To provide A piezoelectric thin film element, comprising a piezoelectric thin film lamination with at least a lower electrode, a piezoelectric thin film represented by a general formula (Na | 12-23-2010 |
| 20100324862 | AZIMUTH PROCESSING DEVICE, AZIMUTH PROCESSING METHOD, AZIMUTH PROCESSING PROGRAM, DIRECTION FINDING DEVICE, TILT OFFSET CORRECTING METHOD, AZIMUTH MEASURING METHOD, COMPASS SENSOR UNIT, AND PORTABLE ELECTRONIC DEVICE - An azimuth processing device is designed for outputting azimuth data based on measurement data sequentially output from a compass sensor. In the device, an accumulation section selectively accumulates substantially new pieces of the measurement data. An offset data updating section updates offset data of the compass sensor based on plural pieces of the measurement data accumulated by said accumulation section. An azimuth data output section outputs the azimuth data based on substantially newest measurement data and the offset data. | 12-23-2010 |
| 20110006643 | PIEZOELECTRIC THIN FILM ELEMENT, AND PIEZOELECTRIC THIN FILM DEVICE - To stably provide a KNN piezoelectric thin film element having piezoelectric characteristics replaceable with a PZT thin film. A piezoelectric thin film element includes: a piezoelectric thin film on a substrate, having an alkali niobium oxide series perovskite structure expressed by a general formula (K | 01-13-2011 |
