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Map display device and navigation system therewith

A map display device and map technology, applied in the field of navigation systems

Inactive Publication Date: 2006-10-25
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This can cause design or cost issues

Method used

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  • Map display device and navigation system therewith
  • Map display device and navigation system therewith
  • Map display device and navigation system therewith

Examples

Experimental program
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Embodiment Construction

[0017] A map display device as an exemplary embodiment of the present invention is included in a navigation system provided in a vehicle. The system includes figure 1 Various devices shown.

[0018] The position detector 1 includes a geomagnetic sensor 1A, a gyroscope 1B, a distance sensor 1C, and a GPS (Global Positioning System) receiver 1D in order to detect the current position and heading direction of the vehicle.

[0019] The geomagnetic sensor 1A includes a ferromagnetic ring such as permalloy, an excitation coil for exciting the ring, and two mutually perpendicular detection coils for detecting directions. An alternating current is applied to the excitation coil; the voltage generated in the two detection coils is measured; then, the heading is detected as an absolute direction.

[0020] The gyro 1B includes, for example, a crystal oscillator, and detects the yaw rate of the vehicle from vibration based on Coriolis force generated when the oscillator vibrates.

[00...

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Abstract

When an area corresponding to area information is determined to use a default font, an ECU displays characters by using the default font stored in a ROM. When an area corresponding to area information is determined to not use a default font, the ECU reads out an exclusive font corresponding to the area to store it in a RAM, and displays characters by using the exclusive font stored in the RAM.

Description

field of invention [0001] The present invention relates to a map display device for displaying characters by selecting fonts used in an area, and to a navigation system using the map display device. Background of the invention [0002] A conventional navigation system displays characters by using a font selected by a user. The navigation system described in Patent Document 1 has three display modes (Kanji mode, Romaji mode, and Katakana mode); characters are displayed based on the mode selected by the user. [0003] Conventional navigation systems are assumed to be used only in one country (eg, Japan) and not in other countries (eg, China, etc.); such systems cannot display characters used in other countries. Thus, a navigation system for a particular language region is manufactured to contain specific characters for that particular language region. This can cause design or cost issues. [0004] -Patent Document 1: JP-H9-16075A Contents of the invention [0005] An obj...

Claims

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Application Information

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IPC IPC(8): G01C21/00G01C21/26G08G1/0969G09B29/10
Inventor 高岛谦治
Owner DENSO CORP
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