Navigational information announcing system for motor vehicle
US4291373A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1979 |
| Grant date | Sep 22, 1981 |
| Priority date | — |
| Expiry date | Jan 19, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F2025/005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A navigation information announcing system for a motor vehicle comprises a tape player, circuitry for measuring the distance actually travelled by the vehicle, circuitry for reproducing distance information pre-recorded on a magnetic tape, and a comparator. A distance indicated by a reproduced datum from a magnetic tape is compared with the distance actually travelled so that the tape player performs a pause operation until the two distances equal each other. When these distances equal each other, the normal playback operation is reestablished so as to reproduce oral information pre-recorded on the magnetic tape, supplying the vehicle driver with directional information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.