Vehicular navigation display system

Details Vehicular navigation display system Vehicular navigation display system

1997-03-26

1999-09-07

Chin, Gary

Data processing: vehicles, navigation, and relative location

Navigation

701208, 340990, 340995, G06F16500

Patent

active

059480394

ABSTRACT:
A vehicular navigation system includes first and second clocks CLK1 and CLK2 which can be switched to operate either a 320 dot per horizontal line display (aspect ratio=4:3) or a 400 dot per horizontal line display (aspect ratio=16:9). The clock switching is under the control of software writing to a control register 23 which in turn controls switching in an image data memory control unit 24 and a display control unit 34 to process or handle lines of either 320 or 400 pixels.

REFERENCES:
patent: 4689747 (1987-08-01), Kurose et al.
patent: 4757455 (1988-07-01), Tsunoda et al.
patent: 4903211 (1990-02-01), Ando
patent: 4912645 (1990-03-01), Kakihara et al.

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