Navigation device
First Claim
1. Personal navigation apparatus for providing output data to a person identifying a route back to a starting position via a plurality of recorded waypoint positions, comprising:
- a route indication device including a visual display element; and
a positioning device, including;
a processor having a data storage device,a linear accelerometer configured to produce an output signal proportional to an acceleration along an axis, anda micromechanical vibrating structure gyroscope configured to produce an output signal proportional to its angular rate of motion around an axis;
wherein said processor is configured to generate and store in said data storage device position data defining said recorded waypoint positions relative to said starting point within a reference space, based upon data received from said linear accelerometer and said vibrating structure gyroscope, wherein the position data for each recorded waypoint identifies only the route back to the previous recorded waypoint, so as to reduce measurement errors.
1 Assignment
0 Petitions
Accused Products
Abstract
Apparatus for, and a method of, providing output data to a person identifying a route back to a recorded waypoint position. Personal navigation apparatus for providing output data to a person identifying a route back to a recorded waypoint position, comprising a route indication device including a visual display element; and a positioning device. The positioning system includes a processing system having a data storage device, a first micromechanical device configured to produce an output signal proportional to an acceleration along an axis, and a second micromechanical device having components in constant motion and configured to produce an output signal proportional to its angular rate of motion around an axis. The processing system is configured to generate and store in said data storage device position data describing the position of said personal navigation apparatus within a reference space, based upon data received from said first micromechanical device and said second micromechanical device.
21 Citations
18 Claims
-
1. Personal navigation apparatus for providing output data to a person identifying a route back to a starting position via a plurality of recorded waypoint positions, comprising:
-
a route indication device including a visual display element; and a positioning device, including; a processor having a data storage device, a linear accelerometer configured to produce an output signal proportional to an acceleration along an axis, and a micromechanical vibrating structure gyroscope configured to produce an output signal proportional to its angular rate of motion around an axis; wherein said processor is configured to generate and store in said data storage device position data defining said recorded waypoint positions relative to said starting point within a reference space, based upon data received from said linear accelerometer and said vibrating structure gyroscope, wherein the position data for each recorded waypoint identifies only the route back to the previous recorded waypoint, so as to reduce measurement errors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method of providing output data to a person identifying a route back to a starting position via a plurality of recorded waypoint positions, comprising the steps of:
-
generating position data describing the position of said personal navigation apparatus within a reference space, based upon data received from a micromechanical linear accelerometer and a micromechanical vibrating structure gyroscope, storing, in a data storage device, generated position data for said starting position and each of said recorded waypoint positions, wherein the position data for each recorded waypoint identifies only the route back to the previous recorded waypoint, so as to reduce measurement errors, identifying a recorded waypoint position, identifying an event position, said event position being a relative position relative to said starting position, and generating route data relating to a route from said event position to said starting position; and visually indicating, on a route indication device, a route, based on said route data, identifying a route back to said starting position via said recorded waypoint positions. - View Dependent Claims (14, 15, 16, 17, 18)
-
Specification