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Portable navigation device

a portable navigation and display device technology, applied in the direction of instruments, transmissions, traffic control systems, etc., can solve the problems of not being able to gradually change the display brightness of the portable navigation device, not being able to make automatic adjustments to display brightness and/or color schemes without user interaction, and not being able to adjust the brightness of the display

Inactive Publication Date: 2007-11-29
GEELEN PIETER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In these situations, the default brightness setting might not be appropriate because the display might be either too dark or too bright for the given lighting conditions.
However, it is not known to gradually change display brightness of a portable navigation device depending on current ambient lighting conditions and user selectable options.
It is also not possible to make automatic adjustments to display brightness and / or color schemes without user interaction where and when it is most desired.

Method used

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  • Portable navigation device
  • Portable navigation device
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Examples

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Embodiment Construction

[0025] An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

[0026]FIG. 1 is a block diagram showing various elements of a navigation device according to the invention. The main components of the navigation device are enclosed in a portable housing 1. The navigation device comprises a memory 10, the type of which might be internal (such as a hard disk, flash memory, random access memory, read only memory or similar) or removable (such as a memory card, memory stick, compact disc, digital versatile disc or similar). The navigation device may comprise both internal and removable memories at the same time.

[0027] Location of the navigation device is calculated using position (e.g. GPS) data 9 that is obtained from a GPS receiver 12. The GPS receiver 12 might be internal or external, connected to the navigation device with wires or wirelessly.

[0028] The navigation device contains a processor 4 for carrying out navigation r...

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PUM

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Abstract

A navigation device is configured to allocate display setting such as color schemes and screen contents to at least one ambient lighting condition, monitors and evaluates a signal indicative of ambient lighting conditions and determines whether display settings for the current ambient lighting conditions are already in use and to change display settings so that they suit current ambient lighting conditions if needed.

Description

REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation of U.S. application Ser. No. 11 / 712,588 filed Mar. 1, 2007, which claims priority to UK patent applications with serial numbers 0604709.6, 0604708.8, 0604710.4, 0604704.7, and 0604706.2, filed Mar. 8, 2006. The aforementioned patent applications are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002] 1. Field of the Invention [0003] The present invention relates to a portable navigation device, including functionality for automatically adjusting display settings to suit various ambient lighting conditions. [0004] 2. Description of the Prior Art [0005] Global Positioning System GPS based navigation devices are well known and are widely employed as in-car navigation devices. Reference may be made to devices that integrate a GPS receiver into a computing device programmed with a map database and that can generate navigation instructions on a display, such as the TOMTOM GO device. These portable, ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G09G3/34
CPCG01C21/26G06Q20/102G06Q30/0601G01C21/367H04L63/12H04L67/325G09B29/102G09G3/3406G09G2360/144G01C21/3697G01C21/36H04L67/62
Inventor GEELEN, PIETER
Owner GEELEN PIETER
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