Patents
Patents for G01C 17 - Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes (3,922)
03/2005
03/17/2005US20050060127 Work site dust control system
03/15/2005US6868360 Small head-mounted compass system with optical display
03/15/2005US6868354 Method of detecting a pattern and an apparatus thereof
03/09/2005CN1590959A 电波罗盘 Radio compass
03/03/2005US20050049821 Location estimation in partially synchronized networks
03/03/2005US20050044737 Geomagnetic sensor having a dip angle detection function and dip angle detection method therefor
03/02/2005EP1510781A1 Geomagnetic sensor having a dip angle detection function and dip angle detection method therefor
03/01/2005US6861838 Magnetic detection element utilizing magneto-impedance effect, production method of the element, and portable equipment using the element
03/01/2005US6860023 Methods and apparatus for automatic magnetic compensation
03/01/2005US6860022 Electronic instrument having a magnetic sensor
02/2005
02/24/2005US20050040818 Magnetic field sensor
02/22/2005US6857194 Vehicle compass system with continuous automatic calibration
02/17/2005US20050038627 Integrated laser mapping tablet and method of use
02/17/2005US20050037780 Mobile communication device with digital compass
02/16/2005CN2679646Y Portable electronic appts. with azimuth measuring function and its magnetic sensor
02/16/2005CN1580708A 转向传感器 Steering sensor
02/15/2005US6856533 Method of modulating threshold voltage of a mask ROM
02/10/2005WO2005012835A2 System for using a 2-axis magnetic sensor for a 3-axis compass solution
02/10/2005CA2531803A1 System for using a 2-axis magnetic sensor for a 3-axis compass solution
02/09/2005CN1576784A Compass
02/08/2005US6853918 Electronic compass
02/03/2005US20050022403 Compass-based indicator with magnetic shielding
02/02/2005EP1502813A1 Turning detection means integrable in a control device of cornering illumination device
02/02/2005CN1575002A Apparatus and method for determining geographical location relative to a designated geographical location
02/02/2005CN1573287A Signal processor for use in electronic compass
02/01/2005US6848168 Method for controlling installation of a head stack assembly
01/2005
01/27/2005WO2005008278A2 Location determination by multiple measurements having position fix improvements
01/27/2005US20050021284 Multiple measurements per position fix improvements
01/27/2005US20050016006 Magnetic compass
01/26/2005EP1500905A2 Magnetic compass
01/20/2005DE20314103U1 Feng Shui decoder has a round disk of metal, plastic, metal plate or card that is divided into radially and concentrically arranged fields and is used to determine Feng Shui indicators
01/18/2005US6845338 Telemetric contextually based spatial audio system integrated into a mobile terminal wireless system
01/18/2005US6842991 Gyro aided magnetic compass
01/13/2005WO2005003683A1 Azimuth measurement device and azimuth measurement method
01/13/2005US20050005464 Self-balancing, no-spin magnet compass
01/13/2005DE10325804A1 Vorrichtung zur bedarfsgerechten Auswahl ortsabhängiger Informationen, die über mobile Endgeräte geliefert werden Device for the appropriate selection of location-based information that is delivered over mobile devices
01/12/2005CN1563893A Improvement in measuring geological compass inclination
01/11/2005US6842715 Multiple measurements per position fix improvements
01/06/2005US20050004752 Portable device for indicating specific location and controlling method thereof
01/04/2005US6836971 System for using a 2-axis magnetic sensor for a 3-axis compass solution
12/2004
12/30/2004US20040267505 Signal processor for use in electronic compass
12/28/2004US6836741 Vertical calibration method for a wire cut electric discharge machine
12/23/2004WO2004099715A3 System and method for compensating for magnetic disturbance of a compass by a moveable vehicle accessory
12/22/2004EP1488196A2 Electronic compass system
12/21/2004US6834251 Methods and devices for identifying, sensing and tracking objects over a surface
12/16/2004WO2004109232A2 Device for selecting location-based information according to requirements, said information being provided by mobile terminals
12/16/2004US20040254727 Electronic compass system
12/16/2004US20040254726 Method and apparatus for an integrated GPS receiver and electronic compassing sensor device
12/16/2004US20040254718 Apparatus and method for determining geographical location relative to a designated geographical location with a mobile communication device
12/09/2004WO2004107061A1 Method for compensating disturbances due to a step motor in an electronic compass
12/09/2004WO2004106855A2 Self-balancing, no-spin magnet compass
12/09/2004US20040248327 Direction sensor and its production method
12/07/2004US6829557 Method and device for incremental position determination
12/07/2004US6826843 Electronic compass apparatus and method
12/07/2004US6826842 Azimuth meter
12/02/2004US20040243333 Method and apparatus for positional calibration of a thermal analysis instrument
12/02/2004US20040240709 Method and system for controlling detail-in-context lenses through eye and position tracking
12/02/2004US20040237319 Method for compensating for predictable generated signals in an electronic device
12/01/2004EP1482322A2 Apparatus and method for determining geographical location relative to a designated geographical location
11/2004
11/25/2004WO2004103027A2 Electroluminescent illumination for a magnetic compass
11/25/2004US20040236510 Electronic compass system
11/25/2004US20040232913 Magnetic field sensor
11/24/2004CN2658712Y Magnetic direction sensor
11/23/2004US6823278 Method and apparatus for positional calibration of a thermal analysis instrument
11/18/2004WO2004099715A2 System and method for compensating for magnetic disturbance of a compass by a moveable vehicle accessory
11/18/2004US20040228116 Electroluminescent illumination for a magnetic compass
11/16/2004US6820025 Method and apparatus for motion tracking of an articulated rigid body
11/16/2004US6817106 Electronic equipment having a built-in electronic compass
11/16/2004CA2364814C Magnetic compass
11/09/2004US6816779 Programmatically computing street intersections using street geometry
11/03/2004CN1174296C Timepiece associated with compass and sighting device
11/02/2004US6813584 Micro azimuth-level detector based on micro electro-mechanical systems and a method for determination of attitude
10/2004
10/28/2004US20040214587 Portable terminal
10/28/2004DE10313139A1 Verfahren zur Bestimmung der Position eines Objekts Method for determining the position of an object
10/21/2004US20040208040 Method of modulating threshold voltage of a mask ROM
10/21/2004DE202004009101U1 Feng Shui compass for measurement, marking and analysis, includes graticule, individually-adjustable sheets, arrow and cursor ring assembly
10/20/2004CN2650065Y 电子罗盘 Electronic compass
10/13/2004CN1536918A Directional sensor interface device of mobile communication terminal and its control method
10/07/2004US20040199357 Method for determining a position of an object
10/07/2004US20040199347 Multi stage control architecture for error suppression in micromachined gyroscopes
10/07/2004US20040196595 Magnetoresistive sensor with magnetostatic coupling of magnetic regions
10/06/2004CN2646730Y Bearing indication telescope
09/2004
09/30/2004WO2004083782A1 Method for measuring force-dependent gyroscope sensitivity
09/30/2004WO2004083780A1 Azimuth measuring method and apparatus, and recording medium storing the azimuth measuring method
09/30/2004US20040187328 Method and device for measuring directional, and computer program
09/30/2004CA2517018A1 Method for measuring force-dependent gyroscope sensitivity
09/28/2004US6796044 Navigation device
09/23/2004US20040186676 Method for measuring force-dependent gyroscope sensitivity
09/23/2004DE202004009167U1 Magnetic compass has push button operated lamp connected by conducting frame with protruding pressure and locating strips
09/22/2004CN1531642A Azimuth meter
09/15/2004CN2641588Y Compass
09/10/2004WO2004076973A1 System and method for compensating for motor magnetic disturbance of a compass measurement
09/10/2004WO2004076971A2 Electronic compass system
09/09/2004US20040172838 Method and device for measuring directional, and computer program
09/02/2004US20040169841 Method and apparatus for identifying objects
08/2004
08/26/2004WO2004061391A3 Methods and apparatus for automatic magnetic compensation
08/25/2004EP1450130A1 Direction sensor and its production method
08/25/2004CN1163727C Remote control correction method for shipping magnetic compass self-heterodyne
08/18/2004EP1446677A2 Magnetometer having a dynamically adjustable bias setting and electronic vehicle compass incorporating the same background of the invention
08/18/2004CN2634434Y 数字磁罗盘 Digital magnetic compass
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