Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Reexamination Certificate
2000-05-12
2001-12-25
Zanelli, Michael J. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Navigation
Employing position determining equipment
C345S519000
Reexamination Certificate
active
06334088
ABSTRACT:
CROSS REFERENCE TO RELATED APPLICATION
This application relates to and incorporates herein by reference Japanese Patent Application No. 11-134103 filed on May 14, 1999.
BACKGROUND OF THE INVENTION
The present invention relates to a map display system, which has a display screen capable of displaying maps and the like and is used in a vehicle navigation system.
Vehicle navigation systems use display devices capable of displaying maps and the like thereon. It is recently proposed to also provide internet information (HTML: hyper text markup language) in addition to the maps for travel route guidance. The navigation system is enabled to provide the HTML information, if a browser program for reading the HTML information is installed in the navigation system.
In installing the browser program in the navigation system, it is stored in a read only memory (ROM) provided in an electronic control circuit of the navigation system. When the browser program operates, a random access memory (RAM) provided in the control circuit is used. The browser program is generally so large that the ROM and the RAM, particularly VRAM, are required to be large enough in memory size. For this reason, additional ROMs and RAMs must be provided in the control circuit, resulting in a large-sized control circuit configuration.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a map display device which is capable of providing HTML information and the like thereon without requiring too much increase in memory size.
According to the present invention, a map display system has an information browser program to browse generally available information in addition to a navigation program. The navigation program and the browser program share a part of a plurality of image data storage areas of a RAM which are normally used to store map images in executing the navigation program. The navigation program and the browser program also share character font data and a key input processing program stored in a ROM.
REFERENCES:
patent: 5757368 (1998-05-01), Celi, Jr. et al.
patent: 6101569 (2000-08-01), Miyamoto et al.
patent: 6138072 (2000-10-01), Nagai
patent: 2-293794 (1989-05-01), None
patent: 10-300490 (1997-04-01), None
patent: 9-166450 (1997-06-01), None
patent: 10-161534 (1998-06-01), None
patent: 11-2539 (1999-01-01), None
Taniguchi Hisamori
Tsutsuki Shiniohi
Denso Corporation
Law Office of David G. Posz
Zanelli Michael J.
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