Display method and apparatus for navigation system
First Claim
Patent Images
1. A display method for a navigation system, comprising the following steps of:
- receiving a scroll signal from an input device operated by a user for scrolling a screen of a navigation system;
detecting a condition in which blank scroll will arise when the screen is scrolled, where the blank scroll is a situation of the screen which does not show any visible object thereon;
reading map data ahead in a scroll direction to find any visible object when the blank scroll condition is detected;
evaluating a shape point on a visible object to determine whether any part of the visible object should come within a display range of the screen when the screen is further scrolled; and
jumping to a location which shows the visible object when it is determined that any part of the visible object should come within the display range.
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Abstract
A display method and apparatus for a navigation system which is capable of preventing blank scroll of a display screen when there is no visible objects within a display range when the screen is scrolled and immediately jumping to the screen where a visible object exists. When a display screen is scrolled, if there is no visible object within a display range of the scroll for a relatively long period of time, the display screen just shows a blank screen, which may confuse the user or make the user feel uneasy. The display method and apparatus avoids the blank scrolling by automatically scrolling to a screen where a visible object is shown.
49 Citations
20 Claims
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1. A display method for a navigation system, comprising the following steps of:
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receiving a scroll signal from an input device operated by a user for scrolling a screen of a navigation system;
detecting a condition in which blank scroll will arise when the screen is scrolled, where the blank scroll is a situation of the screen which does not show any visible object thereon;
reading map data ahead in a scroll direction to find any visible object when the blank scroll condition is detected;
evaluating a shape point on a visible object to determine whether any part of the visible object should come within a display range of the screen when the screen is further scrolled; and
jumping to a location which shows the visible object when it is determined that any part of the visible object should come within the display range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A display apparatus for a navigation system, comprising:
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means for receiving a scroll signal from an input device operated by a user for scrolling a screen of a navigation system;
means for detecting a condition in which blank scroll will arise when the screen is scrolled, where the blank scroll is a situation of the screen which does not show any visible object thereon;
means for reading map data ahead in a scroll direction to find any visible object when the blank scroll condition is detected;
means for evaluating a shape point on a visible object to determine whether any part of the visible object should come within a display range of the screen when the screen is further scrolled; and
means for jumping to a location which shows the visible object when it is determined that any part of the visible object should come within the display range. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification