Method and apparatus for keyboard arrangement for efficient data entry for navigation system

Abstract

A method and apparatus for entering an address for a navigation system allows a user to easily and quickly select a key indicating the next character of the address. At the start of operation, the navigation system shows a full alpha-numeric keyboard. Once the next candidate characters are narrowed down to a certain degree, the navigation system shows a simplified keyboard with a limited number of keys on the monitor screen and highlights the next candidate characters on the simplified keyboard. The navigation system displays both the simplified keyboard and a street name list on the same screen. Since the keys of the limited number are arranged within a small space such as in the three-by-three manner, the user can easily point a cursor or other pointing device to the desired key.

Description

FIELD OF THE INVENTION[0001]This invention relates generally to a method and apparatus for arranging a keyboard for efficient data entry, and more particularly, to a method and apparatus for arranging a keyboard for efficient data entry for navigation system by showing a keyboard of reduced number of keys in a small area of a monitor screen.BACKGROUND OF THE INVENTION[0002]A navigation system performs travel guidance for enabling a user to easily and quickly reach the selected destination. A typical example is a vehicle navigation system where a vehicle is equipped with a navigation function to guide a driver to a destination through a calculated route. Such a navigation system detects the position of the user's vehicle, and reads out map data pertaining to an area at the current vehicle position from a data storage medium. Typically, the navigation system displays a map image on a monitor screen while superimposing thereon a mark representing the location of the user.[0003]FIGS. 1A...

AI Technical Summary

Benefits of technology

[0012]It is, therefore, an object of the present invention to provide a method and apparatus for entering an address in a navigation system accurately and quickly even when using a pointing device by showing a simplified keyboard of reduced number of keys on a monitor screen.

[0019]According to the present invention, the navigation system allows a user to easily and quickly select a key indicating the next character of the address. At the start of operation, the navigation system shows a full alphabetic keyboard. Once the next candidate characters are narrowed down to a certain degree, rather than the full alphabetic keyboard, the navigation system shows the simplified keyboard with a limited number of keys on the monitor screen and highlights the next candidate characters on the simplified keyboard.

[0020]Every time when a new character is input by the user, the navigation system checks an address database and determines the possible characters that can follow the user's input which are distinguished from other characters. The simplified keyboard is arranged to have the limited number of keys that are conveniently clustered in a small area such as in a 3-by-3 checker board manner. The navigation system displays both the keyboard and the street name list on the same screen. Since the keys of the limited number are arranged within a small space such as in the 3-by-3 manner, the user can easily point a cursor or other pointing device to the desired key.

Problems solved by technology

Although the method of specifying an address by entering the street name and the street number described above is effective, disabled keys do not have meaningful function other than indicating that they are unavailable.

A large space on the screen is wasted by the disabled keys.

Unlike a touch screen input method where a user can select the highlighted (enabled) keys by touching the finger on the key, an input method using a pointing device such as a joystick is more difficult to accurately and quickly point a cursor on the highlighted keys.

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