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Class Information
Number: 33/356
Name: Geometrical instruments > Indicator of direction of force traversing natural media > Magnetic field responsive > Error indicator, preventor, or compensator
Description: Device including means for indicating the amount of, preventing the effect of, or compensating for the effect of some force other than that of the magnetic field under investigation.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7458166 |
Vehicle compass system with continuous automatic calibration |
Dec. 2, 2008 |
| 7451549 |
Automatic calibration of a three-axis magnetic compass |
Nov. 18, 2008 |
| 7437242 |
Navigation apparatus |
Oct. 14, 2008 |
| 7436120 |
Compensation of magnetic fields |
Oct. 14, 2008 |
| 7421792 |
Apparatus and method of calibrating azimuth of mobile device |
Sep. 9, 2008 |
| 7400142 |
Dynamic magnetic anomaly compensation |
Jul. 15, 2008 |
| 7389590 |
Geomagnetic sensor for computing azimuth and method thereof |
Jun. 24, 2008 |
| 7377046 |
Inclination sensor and azimuth measuring apparatus using inclination sensor |
May. 27, 2008 |
| 7363718 |
Orientation data generation method, orientation sensor unit and portable electronic equipment |
Apr. 29, 2008 |
| 7353614 |
Vehicle compass system with continuous automatic calibration |
Apr. 8, 2008 |
| 7346995 |
System and method for compensating for magnetic disturbance of a compass by a moveable vehicle accessory |
Mar. 25, 2008 |
| 7346466 |
Geomagnetic sensor and geomagnetic sensor correction method, temperature sensor and temperature sensor correction method, geomagnetism detection device |
Mar. 18, 2008 |
| 7337549 |
Input device for using geomagnetic sensor and a method thereof for generating input signal |
Mar. 4, 2008 |
| 7331115 |
Vehicle compass compensation |
Feb. 19, 2008 |
| 7331114 |
Magnetic compass structure |
Feb. 19, 2008 |
| 7325320 |
Method for estimating the accuracy of azimuthal orientations and portable sighting device |
Feb. 5, 2008 |
| 7322117 |
System and method for compensating for motor magnetic disturbance of a compass measurement |
Jan. 29, 2008 |
| 7324906 |
Compass sensor unit and portable electronic device |
Jan. 29, 2008 |
| 7281339 |
Encoder system |
Oct. 16, 2007 |
| 7278219 |
Magnetic compass |
Oct. 9, 2007 |
| 7268544 |
Magnetism detecting device for canceling offset voltage |
Sep. 11, 2007 |
| 7260896 |
Electronic compass and method of calibration |
Aug. 28, 2007 |
| 7249419 |
Portable terminal apparatus with auto caliblation of orientation measurement |
Jul. 31, 2007 |
| 7248983 |
Electronic compass and method of controlling an electronic compass using independent calibration and compass heading modules |
Jul. 24, 2007 |
| 7237343 |
Orientation data generation method, orientation sensor unit and portable electronic equipment |
Jul. 3, 2007 |
| 7225551 |
Electronic compass and method for tracking vehicle rotation |
Jun. 5, 2007 |
| 7225552 |
Method and system to detect an orientation of a moving object |
Jun. 5, 2007 |
| 7210235 |
Apparatus and method for detecting azimuth and inclination angle, program for detecting the same, and portable terminal device for detecting the same |
May. 1, 2007 |
| 7210236 |
Method and apparatus for measuring magnetic offset of geomagnetic sensor and portable electronic apparatus |
May. 1, 2007 |
| 7200948 |
Geomagnetic sensor for detecting azimuth angle and method thereof |
Apr. 10, 2007 |
| 7194816 |
Mobile terminal apparatus |
Mar. 27, 2007 |
| 7194815 |
Device for detecting magnetic azimuth |
Mar. 27, 2007 |
| 7191533 |
Vehicle compass system with continuous automatic calibration |
Mar. 20, 2007 |
| 7181857 |
Geomagnetic sensor for auto-calibration of magnetic field deviation and method of using the same |
Feb. 27, 2007 |
| 7168176 |
Geomagnetic sensor for informing users whether detected azimuth angle is acceptable, and a method thereof |
Jan. 30, 2007 |
| 7162807 |
Geomagnetic sensor having a dip angle detection function and dip angle detection method therefor |
Jan. 16, 2007 |
| 7159326 |
Electronic device, computer program product and method of operating built-in compass |
Jan. 9, 2007 |
| 7155836 |
Method and apparatus for using magnetic field |
Jan. 2, 2007 |
| 7155837 |
Geomagnetic sensor for detecting dip angle and method thereof |
Jan. 2, 2007 |
| 7146740 |
Methods and apparatus for automatic magnetic compensation |
Dec. 12, 2006 |
| 7127823 |
Vehicle compass system with continuous automatic calibration |
Oct. 31, 2006 |
| 7093371 |
Direction indicating device |
Aug. 22, 2006 |
| 7086164 |
Method and device for measuring directional, and computer program |
Aug. 8, 2006 |
| 7069663 |
Apparatus and method of calibrating azimuth of mobile device |
Jul. 4, 2006 |
| 7065891 |
Accelerometer augmented precision compass |
Jun. 27, 2006 |
| 7028410 |
Portable terminal |
Apr. 18, 2006 |
| 7020971 |
Compass orientation compensation |
Apr. 4, 2006 |
| 6971181 |
Digital display compass for mounting on vehicle rear view mirror |
Dec. 6, 2005 |
| 6964107 |
System, method, device and computer code product for improving the readability of an electronic compass |
Nov. 15, 2005 |
| 6964108 |
Vehicle compass system with continuous automatic calibration |
Nov. 15, 2005 |
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