| US 7,580,790 B2 | ||
| Device for course indication to aid in navigation | ||
| Dennis Jansson, Torsten Almsgatan 80, 3 Tr, Hägersten SE-12651 (Sweden) | ||
| Assigned to Dennis Jansson, (Sweden) | ||
| Appl. No. 11/884,739 PCT Filed Feb. 20, 2006, PCT No. PCT/SE2006/000225 § 371(c)(1), (2), (4) Date Sep. 21, 2007, PCT Pub. No. WO2006/088424, PCT Pub. Date Aug. 24, 2006. |
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| Claims priority of application No. 0500398 (SE), filed on Feb. 21, 2005. | ||
| Prior Publication US 2008/0103687 A1, May 01, 2008 | ||
| Int. Cl. G01C 21/30 (2006.01); G01C 21/00 (2006.01) | ||
| U.S. Cl. 701—201 [701/209; 701/208; 701/210; 701/211; 701/212; 701/213; 340/995.17] | 11 Claims |
| 1. A navigation aid device for use when a predetermined route is followed, said route extending from a starting point along
a series of break points up to a destination being the last break point, such that the route is formed by connecting said
point with mainly straight sections comprising:
an elongated course indication unit extending on either side of a fixed center point and being adapted to indicate any necessary
course adjustments by displacing an appearance pattern to the left or to the right relative the center point, said course
indication unit being adapted to show whether it is necessary to correct the course, by the appearance pattern containing
at least one central area located nearest to the center point having a first appearance (“o”) and two areas located on either
side having a second appearance (“x”), and
a distance indication unit being adapted to indicate how far it is up to the next break point,
wherein
the central area having the first appearance is shown relatively wide in the course indication unit when greater course deviations
can be tolerated, and more narrow when the course must be kept more precisely.
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