Map image scrolling method and apparatus for navigation system
AssigneeAlpine Electronics, Inc.
InventorMaung Han
Life of this patent
Estimating the term…
Abstract
A map scrolling method and apparatus enables to incrementally tracing back to previous relevant locations of the map image. The method includes the steps of: recording information on a stopped location of a map image every time when a user stops during a map scrolling operation; comparing the recorded information with a predetermined threshold value to determine whether the information satisfies threshold value; recording the stopped location in a memory as a traceable location when the recorded information satisfies the threshold value; and tracing back to the map image of the traceable locations recorded in the memory, one by one, every time when the user presses a cancel key or its equivalent of the navigation system.
Claims20
A method for scrolling map images for a navigation system, comprising the following steps of:
- starting a map scrolling operation on a monitor screen of the navigation system;
- recording information on a stopped location of a map image at which a user stops the map scrolling operation;
- comparing the recorded information with a predetermined threshold value to determine whether the information satisfies threshold value;
- recording the stopped location in a memory as a traceable location when the recorded information satisfies the threshold value;
- and
- tracing back to the map image of the traceable locations recorded in the memory, one by one, every time when the user presses a cancel key or its equivalent of the navigation system.
An apparatus for scrolling map images for a navigation system, comprising:
- means for starting a map scrolling operation on a monitor screen of the navigation system;
- means for recording information on a stopped location of a map image at which a user stops the map scrolling operation;
- means for comparing the recorded information with a predetermined threshold value to determine whether the information satisfies threshold value;
- means for recording the stopped location in a memory as a traceable location when the recorded information satisfies the threshold value;
- and
- means for tracing back to the map image of the traceable locations recorded in the memory, one by one, every time when the user presses a cancel key or its equivalent of the navigation system.
Dependencies are inferred from the claim text.