On-board navigation system for motor vehicles

Details On-board navigation system for motor vehicles On-board navigation system for motor vehicles

1988-09-23

1990-01-02

Chin, Gary

Boots, shoes, and leggings

364449, 340990, 340995, G06F 1550

Patent

active

048917605

ABSTRACT:
An on-board navigation system for motor vehicles comprises a first storage medium in which map data in digital form is stored, a control device for gathering map data of a region having a given area including a present location of the vehicle from a first storage medium, and to display a map on a display screen on the basis of the gathered map data, and a second storage medium of non-volatile type into and from which data is written and read-out. The control device is operative to memorize, at the time of the turn-off of a power supply of the vehicle, data gathered immediately before a fall of the power in the second storage medium, and to display the map at the time of a rise-up of the power supply on the basis of the data memorized in the second storage medium.

REFERENCES:
patent: 4307455 (1981-12-01), Juhasz et al.
patent: 4323987 (1982-04-01), Holtz et al.
patent: 4458307 (1984-07-01), McAnlis et al.
patent: 4532514 (1985-07-01), Hatano et al.
patent: 4611289 (1986-09-01), Coppola
patent: 4689747 (1987-08-01), Kurose et al.
patent: 4763333 (1988-08-01), Byrd
patent: 4815012 (1989-03-01), Feintuch

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