Reference pointer for a compass display
US5381603A · kind A · utility
8Cited by
7References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 27, 1993 |
| Grant date | Jan 17, 1995 |
| Priority date | — |
| Expiry date | Jul 27, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C17/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic compass has a display including a reference pointer that indicates a reference heading stored in response to an input signal. The reference heading is the current heading at the time of the input signal, and the reference pointer in the display is updated as the orientation of the compass changes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.