CN101290231A

CN101290231A - Method for automatic switchover and map smoothly rotating between2.5 dimension and two-dimension in navigation procedure

Info

Publication number: CN101290231A
Application number: CNA2007100395595A
Authority: CN
Inventors: 陆林林
Original assignee: SHANGHAI ASTROB TECHNOLOGY Co Ltd
Current assignee: SHANGHAI ASTROB TECHNOLOGY Co Ltd
Priority date: 2007-04-17
Filing date: 2007-04-17
Publication date: 2008-10-22

Abstract

The present invention discloses a method for automatically switching between 2.5-dimension and 2-dimension and smoothly rotating a map during a navigation process. The method is applied to a display system of a navigation device, and comprises the steps of providing a suggested route. The method further comprises the steps of obtaining a parameter related to a current vehicle, changing a map displaying parameter stage by stage to obtain an updated map displaying parameter, refreshing a map according to the updated map displaying parameter. With switching and smoothing method, a vehicle driver distinguishingly changes the displaying mode, based on the habit of using map of common drivers and according to the difference between straight road driving and turning driving.

Description

Automatically switch and the map smoothly spinning solution between navigation procedure 2.5 dimensions and 2 dimensions

Technical field

The present invention relates to automatically switch between a kind of navigation procedure 2.5 dimensions and 2 dimensions and add the map smoothly spinning solution.

Background technology

Navigational system all must have an important function, and that is exactly the mobile change along with object space, and the map that shows on system screen also must be done corresponding moving; When object was being turned, the map that shows on system screen also must be done corresponding rotation, was consistent with moving direction that guarantees map and the velocity reversal that object advances, to the sensation of user with true unanimity.

The map of tieing up the navigational system of navigation datas based on 2 of longitude and latitude shows that two kinds of styles are generally arranged, i.e. the display styles of 2 dimensions and 2.5 dimension display styles with transparent effect.2.5 the map that the dimension style shows moving map when advancing along with object shows, can give the user with the more far-reaching visual field and experience very true to nature, but when turning, rotating effect is not obvious; 2.5 the map that the dimension style shows, it is more stiff to show, but when object was turned, rotating effect was very obvious.

General navigational system in the process of navigation, but all is with a certain fixedly style displayed map, unless in navigation procedure, switch to another kind of display styles by user intervention at present.

Summary of the invention

In order to give the experience of user's the best, in the process of navigation, must realize the automatic switchover of 2.5 peacekeepings, 2 dimension display styles, promptly when object advances, with 2.5 dimension style displayed maps; When object is turned,, after turning is finished, revert to 2.5 dimension style displayed maps again with the style displayed map of 2 dimensions.And whole display styles switches and map rotates all smoothnesses of necessary maintenance process, to prevent to the user with sudden change and lofty sense.

In order to realize the foregoing invention purpose, the present invention has adopted technical scheme to be, automatically switch and the map smoothly spinning solution between a kind of navigation procedure 2.5 dimensions and 2 dimensions, be applied in the display system of guider, comprise a suggestion route is provided, described method further comprises: step 1, obtain the parameter relevant with current vehicle; Step 2 changes described map display parameter step by step, the map display parameter after obtaining upgrading; Step 3 refreshes map according to the map display parameter after upgrading.

Reasonablely be, the relevant parameter of described current vehicle comprises the directional information of current vehicle, and the directional information of described current vehicle equals current map display direction.

Reasonable is in described step 2, further to comprise: step 2 A, judge that angle is a forward or reverse between current map display direction and the most contiguous suggestion route direction; Step 2 B is if forward increases progressively described current map display direction according to predetermined angular; Step 2 C is if reverse, according to the predetermined angular described current map display direction that successively decreases.

Reasonable is further to comprise before the described step 1: show that according to normal mode described normal mode is 2.5 dimension display modes.

Reasonable is that described predetermined angular is smaller or equal to 5 degree.

Reasonable is that the relevant information of described current vehicle comprises vehicle current location and turning position.

Reasonable is that described step 2 further comprises: step 2 A, judge described vehicle current location apart from turning position whether greater than preset distance; If step 2 B greater than preset distance, returns step 1; If step 2 C is less than preset distance, according to the successively decrease demonstration perspective angle of described map of predetermined angular; Further comprise after the described step 3: step 3 A, whether the perspective angle of judging the map demonstration is greater than 0 °; Step 3 B is if step 2 C is returned greater than 0 ° in the perspective angle that map shows; Step 3 C is if the perspective angle that map shows smaller or equal to 0 °, increases progressively the demonstration perspective angle of described map according to predetermined angular, and refreshes map; Whether step 3 D judges perspective angle that map shows less than 90 °, if less than, return step 3 C; If step 3 E greater than 90 °, finishes to show and switches.

Reasonablely be, described predetermined angular is smaller or equal to 5 °, and described preset distance is smaller or equal to 200 meters.

Adopt the switching and the smoothing method of technique scheme, make the vehicle drive personnel use the custom of map, different according to forthright and turning driving, conversion display mode discriminatively based on general car user.

Description of drawings

Below, with reference to accompanying drawing, for those skilled in the art that, from the detailed description to the inventive method, above-mentioned and other purposes of the present invention, feature and advantage will be apparent.

Fig. 1 is that the present invention is from the process flow diagram of 2.5 dimensions to the switching embodiment of 2 dimensions;

Fig. 2 is the process flow diagram of map smoothly rotation among the present invention.

Embodiment

Because the perspective angle that 2 dimension maps show is 0 degree, the perspective angle that 2.5 dimension maps show is the 1-90 degree, therefore, is the process that progressively realizes having an X-rayed the angle increasing or decreasing in handoff procedure.Specifically see also shown in the accompanying drawing 1, below introduce in the map procedure for displaying from 2.5 dimensions taking over seamlessly to 2 dimensions.

Step 11 is in normal vehicle traveling process, with the display styles demonstration and the moving map of 2.5 dimensions;

Step 12 in navigation procedure, according to the information of known paths, obtains the relevant driving information of current moving vehicle in real time, comprises the turning information that relates to turn distance, angle, position and type;

Step 13 is judged the current location of driving vehicle and the distance at turning crossing, when greater than setpoint distance, returns step 11, when less than setpoint distance, begins to switch, and the setpoint distance here can be 200 meters;

Step 14, in handoff procedure, at a certain time interval, and time interval of 1 millisecond for example, with certain amplitude, 4 degree for example, the perspective view of progressively successively decreasing, and refresh map according to the perspective view after successively decreasing;

Step 15, is the perspective angle of judging the map demonstration greater than 0 after refreshing? if greater than 0, return step 14, successively decrease once more and refresh;

Step 16 equals at 0 o'clock in case the perspective angle is decremented to, and shows vehicle by this turning crossing, finishes the switching that 2.5 maps of tieing up 2 dimensions show;

Step 17 in case obtain vehicle by the driving information at turning crossing in driving information, then begins to carry out the switching of 2 dimensions to 2.5 dimensions;

Step 18 at a certain time interval with certain amplitude, for example progressively increases progressively perspective view with 1 millisecond, 4 degree, and refreshes map according to the perspective view after successively decreasing;

Step 19, is the perspective angle of judging the map demonstration less than 90 degree after refreshing? if less than, return step 18, proceed increment operation;

Step 20, in case less than 90 degree, show that switching finishes, whole flow process stops.

Introduce the implementation procedure that map smoothly switches below in conjunction with Fig. 2.

Step 21 is obtained current map direction, and current map direction is consistent with the travel direction of current vehicle;

Step 22 is obtained the most contiguous suggestion route direction;

Does step 23 judge that be forward or reverse between above-mentioned two direction vectors?

Step 24 is if forward is spent to 90 degree from 0 and is the interval with 5 degree, increases progressively the display direction of map step by step;

Step 25, if reverse, be interval to 0 degree with 5 degree from 90 degree, the display direction of the map that successively decreases step by step;

Step 26, the demonstration that refreshes map;

Does step 27 judge that the display direction of map equals the most contiguous current suggestion route direction? if be not equal to, showing also is unrealized takes over seamlessly, if equal to enter step 28, finishes this flow process.

Adopt such scheme, make the vehicle drive personnel use the custom of map based on general car user, when forthright travels, need understand long-range trend of road in advance, but arrived the crossing of this turning, but be the detailed road conditions that to see the turning crossing, when travelling, forthright shows that getting a bird's eye view the formula map allows the user can be observed suggestion route trend far away, when fast arrival turning crossing, automatically with map very smooth-going be transformed into the general expression plane map by getting a bird's eye view the formula map, allow the user observe the suggestion route trend at turning crossing easily again, behind the turning crossing, very smooth-going again getting back to got a bird's eye view the formula map and continued navigation.

The front provides the description to preferred embodiment, so that any technician in this area can use or utilize the present invention.Various modifications to these embodiment are conspicuous to those skilled in the art, can be applied to other embodiment to total principle described here and not use creativeness.Thereby, the embodiment shown in the present invention will be not limited to here, and the wide region of principle that should disclose and new feature according to meeting here.

Claims

1, automatically switch and the map smoothly spinning solution between a kind of navigation procedure 2.5 dimensions and 2 dimensions, be applied in the display system of guider, comprise a suggestion route is provided, described method further comprises:

Step 1 is obtained the parameter relevant with current vehicle;

Step 2 changes described map display parameter step by step, the map display parameter after obtaining upgrading;

Step 3 refreshes map according to the map display parameter after upgrading.

2, automatically switch and the map smoothly spinning solution between navigation procedure 2.5 dimensions according to claim 1 and 2 dimensions, it is characterized in that,

The relevant parameter of described current vehicle comprises the directional information of current vehicle, and the directional information of described current vehicle equals current map display direction.

3, automatically switch and the map smoothly spinning solution between navigation procedure 2.5 dimensions according to claim 2 and 2 dimensions, it is characterized in that, in described step 2, further comprise:

Step 2 A judges that angle is a forward or reverse between current map display direction and the most contiguous suggestion route direction;

Step 2 B is if forward increases progressively described current map display direction according to predetermined angular;

Step 2 C is if reverse, according to the predetermined angular described current map display direction that successively decreases.

4, automatically switch and the map smoothly spinning solution between navigation procedure 2.5 dimensions according to claim 3 and 2 dimensions, it is characterized in that, further comprise before the described step 1:

Show that according to normal mode described normal mode is that 2.5 dimensions show.

5, automatically switch and the map smoothly spinning solution between navigation procedure 2.5 dimensions according to claim 4 and 2 dimensions, it is characterized in that,

Described predetermined angular is smaller or equal to 5 degree.

6, automatically switch and the map smoothly spinning solution between navigation procedure 2.5 dimensions according to claim 1 and 2 dimensions, it is characterized in that the relevant information of described current vehicle comprises vehicle current location and turning position.

7, automatically switch and the map smoothly spinning solution between navigation procedure 2.5 dimensions according to claim 6 and 2 dimensions, it is characterized in that described step 2 further comprises:

Step 2 A, judge described vehicle current location apart from turning position whether greater than preset distance;

If step 2 B greater than preset distance, returns step 1;

If step 2 C is less than preset distance, according to the successively decrease demonstration perspective angle of described map of predetermined angular;

Further comprise after the described step 3:

Step 3 A, whether the perspective angle of judging the map demonstration is greater than 0 °;

Step 3 B is if step 2 C is returned greater than 0 ° in the perspective angle that map shows;

Step 3 C is if the perspective angle that map shows smaller or equal to 0 °, increases progressively the demonstration perspective angle of described map according to predetermined angular, and refreshes map;

Whether step 3 D judges perspective angle that map shows less than 90 °, if less than, return step 3 C;

If step 3 E greater than 90 °, finishes to show and switches.

8, automatically switch and the map smoothly spinning solution between navigation procedure 2.5 dimensions according to claim 7 and 2 dimensions, it is characterized in that,

Described predetermined angular is smaller or equal to 5 °, and described preset distance is smaller or equal to 200 meters.