| Patent Number |
Title Of Patent |
Date Issued |
| 7554299 |
Battery monitoring circuit and method |
June 30, 2009 |
| A battery-monitoring circuit detects rapid changes in current drawn from a battery by a device powered thereby. The circuit includes calibrating operating modes that determine voltage-to-frequency conversion parameters, and amplifier errors at various levels of battery voltage. |
| 7418364 |
Dynamic attitude measurement method and apparatus |
August 26, 2008 |
| A method and system senses the attitude of an accelerating object by measuring acceleration with accelerometers in three orthogonal axes and measuring angular rate with angular rate sensors disposed about each such axis to compute attitude of the object accurately relative to a vertical |
| 7369047 |
Adaptive sensing network |
May 6, 2008 |
| A plurality of modules interact to form an adaptive network in which each module transmits and receives data signals indicative of radio-frequency identification signals, and indicative of proximity sensing at the module. A central computer accumulates the data produced or received and |
| 7216055 |
Dynamic attitude measurement method and apparatus |
May 8, 2007 |
| A method and system senses the attitude of an accelerating object by measuring acceleration with accelerometers in three orthogonal axes and measuring angular rate with angular rate sensors disposed about each such axis to compute attitude of the object accurately relative to a vertical |
| 7176808 |
System and method for updating a network of remote sensors |
February 13, 2007 |
| A method and system updates a network of sensors remotely through the use of a communication link. The sensors to be updated as well as data files to perform the updating are selected at a base station. The selected sensors are notified of the upcoming update by the base station and may |
| 6421622 |
Dynamic attitude measurement sensor and method |
July 16, 2002 |
| A method and system senses the attitude of an accelerating object. Attitude sensing is accomplished by measuring acceleration in three orthogonal axes and measuring angular rate about each such axis to compute attitude accurately relative to a vertical axis. The system includes accelerom |
| 5819206 |
Method and apparatus for determining position and orientation of a moveable object using acceler |
October 6, 1998 |
| A three-dimensional position and orientation tracking system uses accelerometers to measure acceleration of a moveable object (e.g., a head-mounted display unit or a data glove). A tracking processor generates both position and orientation information on the object relative to a simu |
| 5615132 |
Method and apparatus for determining position and orientation of a moveable object using acceler |
March 25, 1997 |
| A three-dimensional position and orientation tracking system uses accelerometers to measure acceleration of a moveable object (e.g., a head-mounted display unit or a data glove). A tracking processor generates both position and orientation information on the object relative to a simu |
