Matches 1 - 18 out of 18
Match Document Document Title
7543392 Motion estimation method and system for mobile body  
A motion estimation method and system for a mobile body are provided. The method includes: obtaining magnetic field information from compass information of the mobile body; comparing the magnetic...
7248983 Electronic compass and method of controlling an electronic compass using independent calibration and compass heading modules  
A method for controlling an electronic compass includes receiving raw magnetic field data into a calibration module and determining a calibration output based upon the raw magnetic field data. The...
7197343 Portable electronic apparatus with azimuth measuring function, magnetic sensor suitable for the apparatus, and azimuth measuring method for the apparatus  
A portable phone has a CPU and a magnetic sensor unit including an X-axis magnetic sensor, a Y-axis magnetic sensor, and a temperature sensor. CPU measures at first and second temperatures the...
6853918 Electronic compass  
An electronic compass comprises a saturable core sensor ( 2 ) with a core ( 3 ) made of ferromagnetic material surrounded by an electric winding ( 3 ′), a first couple of electric windings ( 4, 5...
6243660 Digital compass with multiple sensing and reporting capability  
A multi-function electronic compass incorporates multiple sensors in addition to magnetometers inputting sensed data to a microprocessor system which calculates a variety of results from the sensed...
5878370 Vehicle compass system with variable resolution  
A vehicle compass system including a magnetic field sensor from which the earth's magnetic field can be detected in two channels of measurement. The sensor is coupled to a processing circuit which...
4767988 Precision magnetometer orientation device  
The orientation of a moving platform with respect to a magnetic field is determined by rotating a 3-component vector magnetometer mounted on the platform about at least two axes in the magnetic...
4533872 Magnetic field sensor element capable of measuring magnetic field components in two directions  
A magnetic field sensor which may be rendered preferentially sensitive to magnetic field components in each of two, preferably orthogonal, directions by application of appropriate magnetic bias...
4531298 Apparatus and method for controlling northerly turning error in direction indicating navigational instruments  
A system to control the effect of northerly turning error which may occur in any direction indicating navigation instrument which includes a component responsive to the earth's magnetic field. In...
4032758 Compensated vehicle heading system  
A compensated vehicle heading system wherein magnetic heading information is combined with heading information determined by sensing vehicle dynamic movement to provide augmented heading...
3858328 MEANS AND TECHNIQUES USEFUL IN GYROS  
This specification described gyros in which the spin axis is maintained in alignment with a particular direction which in some cases may be the direction of an ambient magnetic field or a component...
3466923 APPARATUS FOR CALIBRATING COMPASSES  
3196332 Gyroscopic data transmission system and compensating means therefor  
3031766 Magnetic compass compensating system  
2924885 Aircraft indicating instrument and system  
2806295 Electrical borehole surveying device  
2800723 Stabilized magnetic compass  
3583074 Title is not available  
Matches 1 - 18 out of 18