Variable-brightness display for use in a navigation system for a vehicle
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United States of America Patent
Stats
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Oct 23, 1990
Grant Date -
N/A
app pub date -
Oct 30, 1987
filing date -
Oct 30, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A display device applied to a navigation system for a vehicle displaying map information by using a color pallet. The device comprises means for supplying at least a signal distinguishing a bright and a dark environment according to the degree of brightness degree in a passenger compartment of the vehicle. Color pallets have their contents changed according to the information from the supply means. The contents of the registers are changed so that a degree of brightness of background color of a display unit is decreased to less than a decreased degree of brightness of colors displaying the information on the display unit when the output information of the supply means changes from the brightness to the darkness.
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