MAP DISPLAY USABLE AS BOTH ON-VEHICLE ONE AND PORTABLE ONE

Japanese Patent JP3910463

B2

PROBLEM TO BE SOLVED: To save power consumption of a map display when it is used as a portable one.
SOLUTION: A navigation apparatus 1 usable as both an on-vehicle one and a portable one is mounted on a frame 21 of a vehicle. When changeover operation to an on-vehicle mode is carried out by an operation part 5, a using mode changeover portion 7 changes a drawing portion 9 over to the on-vehicle mode, and changes a GPS reception portion 2 over to a usual mode whose detection period is shorter. Reversely, when the navigation apparatus 1 is detached from the frame 21, and changeover operation to a portable mode is carried out by the operation part 5, the changeover portion 7 changes the drawing portion 9 over to the portable mode, and changes the reception portion 2 over to a power saving mode whose detection period is longer. The drawing portion 9 draws a map image comprising a current position along with a current position mark which corresponds to the mode, using map data in the periphery of the current position stored in a map memory portion 4, on the basis of the current position detected newly by the reception portion 2. The map image is converted into video signal and is outputted to a display portion 3, and is displayed on a screen.

Yusuke Suzuki
Takayuki Matsunaga

JP2002043285A

April 25, 2007

February 20, 2002

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Navitime Japan Co., Ltd.

G01C21/00; G09B29/00; G08G1/005; G08G1/0969; G09B29/10; (IPC1-7): G01C21/00; G08G1/005; G08G1/0969; G09B29/00; G09B29/10

JP10103999A
JP2001317947A
JP6102338A
JP7209405A
JP2002139343A
JP8146869A
JP2003166848A
JP2002062146A
JP2002039771A
JP2002031538A
JP2001021367A
JP2000171264A
JP10318763A
JP8128838A

Wintech Patent Business Corporation

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