CN100511209C - Digital map display method - Google Patents
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- CN100511209C CN100511209C CNB2005100932990A CN200510093299A CN100511209C CN 100511209 C CN100511209 C CN 100511209C CN B2005100932990 A CNB2005100932990 A CN B2005100932990A CN 200510093299 A CN200510093299 A CN 200510093299A CN 100511209 C CN100511209 C CN 100511209C
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Abstract
The invention relates to a digit map display method, which comprises: (1), recording initial map information present display at screen in the client software of terminal; (2), reducing the virtual video area of map stepped; (3), judging if the initial map is reduced to middle ratio value, if it is, executing step 4, or else, executing step 2; 4, reducing the virtual video area and translating it to the target point; 5, judging if the ratio rule of preset map is needed one, if it is, executing step 6, or else, executing step 4; 6, based on the zoom factor, zooming the virtual video area, and translating the virtual video area to the target point; 7, when the target point reaches the center of screen, the terminal client zooms present displayed map; 8, when the ratio rule of map reaches initial ratio rule, setting the target point as the focus point of terminal.
Description
Technical field
The present invention relates to a kind of digital map display method, refer to a kind of method that shows based on the portable terminal numerical map of GIS engine especially.
Background technology
Present based on WAP, based on the scene handoff technique in the portable terminal electronic chart of middlewares such as JAVA and Brew realization, all be stiff direct switching, at the uniform velocity switch and do not have a convergent-divergent, literal on the terminal screen or graph image show, generally all is that the demonstration output interface function of the standard that provides by terminal operating system is realized.This standard interface function is general, but efficient is lower.It is as follows to jump to the specific implementation method that B orders from the A point in above-mentioned various portable terminal electronic chart implementations:
Jump to the B point from the A point, the A point is the central point of current phone screen, and the B point is the target location point, and redirect finishes back B point and becomes the mobile phone screen central point.If as seen 2 of A, B, then move to the B point from the A point automatically on screen, zoom operations is not carried out in the centre; When the B point is invisible on screen, then directly graphics field, B point place is switched to center Screen, whole process is directly to switch current picture, target picture in the replacement; Promptly on portable terminal, draw, utilize universal display output interface function displayed map on current screen then by the application A PI that provides by mobile terminal operating system is provided.
In addition, because the application A PI plotting speed that portable terminal itself provides is slow, it all is the API that directly uses operating system to provide basically that present existing moving picture terminal switches, and speed is slow and the sawtooth function that disappears is not provided, and the figure effect that drafting is come out is also bad.Literal on the mobile terminal screen or graph image show, generally all is that the demonstration output interface function of the standard that provides by mobile terminal operating system is realized.This standard interface function is general, but efficient is lower.
Adopt above-mentioned handoff technique not consider factors such as the speed of (being limited to its platform constraints also can't accomplish) handoff procedure, direction, hommization effect, feel stiff and lose reference information easily to the people; Do not provide successional visual effect to the user.
Summary of the invention
The objective of the invention is in order to solve deficiency and the problem that prior art exists, the continuous portable terminal map scene of virtual, efficient redirect, visual experience that makes the user obtain a kind of electronic map interface based on the real world micromation is switched.
For achieving the above object, the invention provides a kind of portable terminal digital map display method.This method specifically comprises:
Step 1: the engineer's scale of the initial map that in the client software of terminal, shows on the record current screen and the positional information of impact point; Setting program operational factor, this program running parameter comprise the image zoom coefficient, be used to limit image narrows down to the back allocation ratio chi of minimum state and is used to limit the middle scale chi that image narrows down to intermediateness;
Step 2: client software is according to described image zoom coefficient, the image of the map that is arranged on the virtual video zone on the map in the terminal is dwindled step by step and outputs to step by step on the screen of described terminal with the center of initial map;
Step 3: judge whether initial map narrows down to described middle scale chi, in this way, execution in step 4; As not being that then execution in step 2;
Step 4: the image of the map in virtual video zone continued to dwindle and move to described impact point direction is parallel, with move and dwindle in the image of described map of experience output on the screen of described terminal;
Step 5: whether the engineer's scale of judging the map of the current demonstration of terminal has arrived back allocation ratio chi, if reach, then execution in step 6; If do not reach, then execution in step 4;
Step 6: client terminals amplifies step by step according to the image of described image zoom coefficient to the described map in virtual video zone, simultaneously, the image of the map in institute virtual video zone is continued to move to the impact point direction is parallel, with move and amplify in the image of map of experience output on the screen of described terminal;
Step 7: behind screen center's point of described impact point incoming terminal, to be the center with the impact point amplify the image of current shown map client terminals, and the image change of the map of this amplification process is outputed on the screen of described terminal;
Step 8: when the engineer's scale that has the map of impact point on the screen of terminal arrived the engineer's scale of initial map, client terminals software was made as the focus that terminal shows with this impact point.
Therefore, the present invention has the following advantages: based on virtual, efficient redirect, visual experience quick, the level and smooth switching similar to real world continuously of the electronic map interface of real world micromation.
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the visual simulation handoff procedure process flow diagram of digital map display method of the present invention.
Fig. 2 is the screen synoptic diagram of digital map display method of the present invention.
Fig. 3 is the transfer process process flow diagram between two visual focuses in the digital map display method of the present invention.
Fig. 4 is the map location switching flow figure between a plurality of Query Result points of digital map display method of the present invention.
Embodiment
In order to be implemented in level and smooth and quick that electronic chart switches on the portable terminal, satisfy the visual continuity sensation of human eye.On portable terminal, no longer draw, utilize universal display output interface function displayed map on current screen then by the application A PI that provides by mobile terminal operating system is provided.
The present invention is by increasing the bottom video interface module in system, combining with buffer technology by the direct video way of output and realize the switching of portable terminal map.Directly the video way of output is to introduce " internal memory virtual video district " this " video double buffering " mechanism, and image content changes the frequency height according to the map, and directly video output provides full frame renewal and incremental update mechanism; Directly the content with the virtual video zone covers (DUMP) to the actual video storage area, thereby has realized quick, smoothness properties that video shows.Wherein incremental update comprises extension and stack renewal.
The human eye of mobile terminal system simulation in the present invention is in the natural process of checking a width of cloth paper map, the mobile phone terminal screen is narrow and small, area is very big and paper map spreads out afterwards, to so realize out on narrow space and the effect of watching similar even " sensation " indifference of paper map at the mobile phone terminal screen, process when checking paper map " two visual focus between transfer process " according to human eye, when corresponding human eye is checked paper map from the vacillate process of another observation point of an observation point.Referring to Fig. 1 visual simulation handoff procedure process flow diagram, concrete simulation handoff procedure is specific as follows:
Step 101: screen is stabilized in an engineer's scale, and during focus was put: corresponding human eye was being observed point on the paper map;
Step 102: the mobile phone terminal computed in software goes out the impact point position that will transfer to, and with respect to the azimuth-range of current focus: known when corresponding people watches paper map next step will move sight to which direction, but uncertain concrete distance is far and near;
Step 103: screen dwindles fast: lift head when correspondence is checked paper map, pack up sight, so that all map is heaved in sight;
Step 104: from slow to fast, from fast to slow, to the impact point moving screen: correspondence moves the process of sight when seeing papery figure, and first fast moving slowly focuses on when impact point again;
Step 105: screen amplifies fast, and impact point is placed in the middle: when correspondence was seen paper map, eye moved on to impact point, bow then so that sight more near impact point.
Concrete enforcement of the present invention is specific as follows: referring to the screen synoptic diagram of Fig. 2 for digital map display method of the present invention.The internal memory of system is divided into 9 districts in portable terminal, and wherein center 1101 is the actual video memory block for the visual current screen of portable terminal, and 8 districts are that internal memory virtual video buffer zone is the dynamic buffering screen of portable terminal virtual screen on every side.Be elaborated in conjunction with Fig. 1 screen synoptic diagram: the screen of 1101 sign current mobile terminal is that visual part is a current screen among the figure, and the video data of portable terminal displayed map is stored in the actual video memory block of portable terminal; These 8 of 1102-1109 of periphery sign are the dynamic buffering of virtual screen; 9 grades of bufferings form the virtual screen based on global map.This global map is kept on portable terminal or the server.When the image update of virtual screen, be based on that global map carries out at the map in virtual video district.
Transfer process between two visual focuses is specially: impact point is not on current screen, and carrying out when mobile phone users that the switching between the starting point and impact point on the map is about to the starting point will be that the map showing on the current screen of focus switches to the impact point when being the map that shows of focus on current screen; Current screen is stabilized in an engineer's scale, and then at first mobile terminal system calculates the azimuth-range of impact point with respect to starting point earlier; With the starting point is the center, and mobile terminal system dwindles current image flow current screen is carried out convergent-divergent by calling, and promptly current screen and virtual screen is refreshed by adopting the direct video way of output to carry out video simultaneously; When narrowing down to a half, the portable terminal active screen begins mobile current screen to the impact point linear translation, from slow to fast, move current screen to impact point from fast to slow, dwindle flow process and dwindle in impact point translation process, continuing to call, when the engineer's scale of the map of the current demonstration of terminal has arrived back allocation ratio chi; Mobile terminal system calls the current image flow of amplification and carries out current screen amplification carrying out simultaneously translation; When impact point be behind the central point of mobile terminal screen to amplifying fast, focus is positioned at this impact point, the engineer's scale when being returned to starting point, starting point is not at active screen.
By Fig. 3 the transfer process between above-mentioned two visual focuses is elaborated:
Step 201: setting program operational factor in the client software of terminal, this program running parameter comprise the image zoom coefficient, be used to limit image narrows down to the back allocation ratio chi of minimum state and is used to limit the middle scale chi that image narrows down to intermediateness; The engineer's scale of the initial map that shows on the record current screen and the positional information of impact point;
Step 202: described client software is according to the image zoom coefficient, the image of the map that is arranged on the virtual video zone on the map in the terminal is dwindled step by step and outputs to step by step on the screen of described terminal with the center of initial map;
Step 203: judge whether initial map narrows down to the middle scale chi, in this way, execution in step 204; As not being that then execution in step 202;
Step 204: the image of the map in virtual video zone continued to dwindle and move to the impact point direction is parallel, with move and dwindle in the image of map of experience output on the screen of terminal;
Step 205: whether the engineer's scale of judging the map of the current demonstration of terminal has arrived back allocation ratio chi, if reach, then execution in step 206; If do not reach, then execution in step 204;
Step 206: client terminals amplifies step by step according to the image of image zoom coefficient to the map in virtual video zone, simultaneously, the regional continuation of virtual video is parallel mobile to the impact point direction, output on the screen of terminal moving the image that reaches the map that experiences in the amplification;
Step 207: behind screen center's point of impact point incoming terminal, to be the center with the impact point amplify the image of current shown map client terminals, and the image change of the map of this amplification process is outputed on the screen of terminal;
Step 208: when the engineer's scale that has the map of impact point on the screen of terminal arrived the engineer's scale of initial map, client terminals software was made as the focus that terminal shows with this impact point.
In conjunction with shown in Figure 4, for the present invention the map location between a plurality of Query Result points is switched, its idiographic flow carries out as follows:
Step 301: portable terminal Map Services end provides a plurality of result points and tabulates to customer mobile terminal;
Step 302: mobile phone users is chosen first point and is current focus and focus on this point, shows to comprise that the map picture of this point is on the portable terminal current screen;
Step 303: portable terminal is waited for user key-press (navigation key), continues step 34 if the mobile phone users button is determined the location; As do not have button, then finish;
Step 304: client software is according to image zoom coefficient n=1.618, with the center of initial map to being arranged on virtual video zone on the map in the terminal and dwindling step by step and outputing to step by step on the screen of terminal;
Step 305: whether initial map narrows down to a half of the initial map that was presented at terminal originally, in this way, and execution in step 306; As not being that then execution in step 304;
Step 306: the virtual video zone continued to dwindle and to impact point direction linear translation, with move and dwindle in the image of map of experience output on the screen of terminal; Promptly at this, the virtual video zone quickens to move to central point, and the engineer's scale of portable terminal displayed map slows down and diminishes;
Step 307: whether the engineer's scale of the map of the current demonstration of terminal has been the map scale of viewpoint at highest point to back allocation ratio chi, if reach, then execution in step 308; If do not reach, then execution in step 306;
Step 308: client terminals amplifies the image of the map in virtual video zone step by step according to described image zoom coefficient n=1.618, simultaneously, the virtual video zone is continued to impact point direction linear translation, output on the screen of terminal moving the image that reaches the map of experience in the amplification; Promptly at this, the virtual video zone quickens to move to central point, and the engineer's scale of portable terminal displayed map slows down and becomes big;
Step 309: behind screen center's point of impact point incoming terminal, to be the center with the impact point amplify the image of current shown map client terminals, and the image change of the map of this amplification process is outputed on the screen of terminal; It is mobile to slow down to central point in this virtual video zone, and the engineer's scale of portable terminal displayed map quickens to become big simultaneously;
Step 310: user inquiring result points flow process turns back to step 303.
Wherein step 304 specifically comprises in the present embodiment: the minification parameter image zoom coefficient that mobile terminal client terminal software presets when the zoom state not according to mobile terminal system: n=1.618, dwindle: at first the virtual video zone on the map in the terminal is carried out 0.1n and is doubly dwindled and promptly dwindle current screen 0.1n doubly, buffering screen and current screen adjacent part (0.1n) enter the current screen periphery, the virtual screen content synchronization is upgraded, and has promptly finished the first order and has dwindled; When continuing to dwindle .2n times of virtual video area 0 on the map, current screen continues to dwindle, periphery buffering virtual screen enters current screen, and the virtual screen content synchronization is upgraded the map datum that promptly is stored in the virtual video district and upgraded synchronously, has promptly finished the second level and has dwindled; Continuation is doubly dwindled the virtual video area 0 .4n on the map, has promptly finished the third level and has dwindled; Carry out 0.2n again and doubly dwindle, promptly finished the fourth stage and dwindled; Periphery buffering virtual screen enters current screen when dwindling, and the virtual screen content is upgraded synchronously; Last carry out 0.1n dwindling doubly again; Under new engineer's scale, promptly formed new buffering virtual screen this moment; Finished the process of dwindling of current screen simultaneously, promptly finished level V and dwindled; And be presented on the virtual screen at the image of the map in every grade of virtual video district that dwindles all to intercept the current screen size dimension in the process, virtual screen is covered current screen promptly at the video data of above-mentioned internal memory virtual video district intercepting with the terminal screen same size; This video data is covered the actual video memory block, output to terminal screen again and show.Above-mentioned virtual screen is a stack incremental update when adopting the spare time.Therefore can be chosen in system free time to the incremental update operation of virtual screen, come asynchronous finishing by the thread of system's lower priority; Incremental update when this operation is called the spare time.
Wherein the client terminals in the step 308 amplifies specifically step by step the image of the map in virtual video zone according to described image zoom coefficient n=1.618 and comprises in the present embodiment: the enlargement factor parameter image zoom coefficient that mobile terminal client terminal software presets when the zoom state not according to mobile terminal system: n=1.618, amplify: at first the virtual video zone on the map in the terminal is carried out 0.1n and is doubly amplified and promptly amplify current screen 0.1n doubly, current screen is occupied periphery buffering screen, the virtual screen content synchronization is upgraded, and has promptly finished first order amplification; When continuing .2n times of virtual video area 0 on the enlarged map, current screen continues expansion, overflows part and rushes in periphery buffering virtual screen, and the virtual screen content synchronization is upgraded, and has promptly finished second level amplification; Continuation is doubly amplified the virtual video area 0 .4n on the map, has promptly finished third level amplification; The virtual video area 0 .2n that carries out again on the map doubly amplifies; Amplify to overflow simultaneously and partly rush in periphery buffering virtual screen, the virtual screen content synchronization is upgraded, and has promptly finished fourth stage amplification; At last 0.1n amplification is doubly carried out in the virtual video zone on the map again; Under new engineer's scale, promptly formed new buffering virtual screen this moment; Finish the amplification process of current screen simultaneously, promptly finished the level V amplification; All intercept being presented on the virtual screen of image of map in virtual video district of the size of current screen size in every grade of amplification process, virtual screen is covered current screen promptly at the video data of described internal memory virtual video district intercepting with the screen same size of described terminal; This video data is covered the actual video memory block, output to the screen of described terminal again.Above-mentioned virtual screen is an extension incremental update when adopting the spare time.
In the present embodiment, the translation process of map can be linear translation or curvilinear translation, mobile terminal system is by the distance between the initial sum impact point simultaneously, calculate in the jump procedure viewpoint at the map scale of highest point, promptly image narrows down to the back allocation ratio chi parameter of minimum state when starting point and impact point are simultaneously in mobile terminal screen; The middle scale chi can be also can be changed by the portable terminal setting by the user by the mobile terminal system default value, in the present embodiment the middle scale chi be the original initial map that shows of portable terminal narrow down to original demonstration half also can be 40%, 60% etc.Progression in the process of zooming in or out can change simultaneously, has used 5 grades in the present embodiment.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (4)
1, a kind of digital map display method is characterized in that comprising:
Step 1: the engineer's scale of the initial map that in the client software of terminal, shows on the record current screen and the positional information of impact point; Setting program operational factor, this program running parameter comprise the image zoom coefficient, be used to limit image narrows down to the back allocation ratio chi of minimum state and is used to limit the middle scale chi that image narrows down to intermediateness;
Step 2: described client software is according to described image zoom coefficient, the image of the map that is arranged on the virtual video zone on the map in the described terminal is dwindled step by step and outputs to step by step on the screen of described terminal with the center of described initial map;
Step 3: judge whether described initial map narrows down to described middle scale chi, in this way, execution in step 4; As not being that then execution in step 2;
Step 4: the image of the described map in described virtual video zone continued to dwindle and move to described impact point direction is parallel, with move and dwindle in the image of described map of experience output on the screen of described terminal;
Step 5: whether the engineer's scale of judging the map of the current demonstration of described terminal has arrived described back allocation ratio chi, if reach, then execution in step 6; If do not reach, then execution in step 4;
Step 6: client terminals amplifies step by step according to the image of described image zoom coefficient to the described map in described virtual video zone, simultaneously, the image of the described map in described virtual video zone is continued to move to described impact point direction is parallel, with move and amplify in the image of described map of experience output on the screen of described terminal;
Step 7: arrive screen center's point of described terminal when described impact point after, to be the center with described impact point amplify the image of current shown map client terminals, and the image change of the described map of this amplification process is outputed on the screen of described terminal;
Step 8: when the engineer's scale that has the map of described impact point on the screen of described terminal arrived the engineer's scale of described initial map, described client terminals software was made as the focus that described terminal shows with this impact point.
2, digital map display method according to claim 1 is characterized in that, parallel the moving in described step 4 and the step 6 is linear translation.
3, digital map display method according to claim 2 is characterized in that, described linear translation is curvilinear translation.
4, digital map display method according to claim 1 is characterized in that, is specially on the screen that outputs to described terminal in described step 2, step 4, step 6 and the step 7:
Step 11: the incremental update when image of the described map in described virtual video zone is carried out the spare time;
Step 12: the video data of intercepting and the screen same size of described terminal on the image of the described map in described virtual video zone;
Step 13: described video data is covered the actual video memory block, output to again on the screen of described terminal and show.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100932990A CN100511209C (en) | 2005-08-24 | 2005-08-24 | Digital map display method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100932990A CN100511209C (en) | 2005-08-24 | 2005-08-24 | Digital map display method |
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| CN1920807A CN1920807A (en) | 2007-02-28 |
| CN100511209C true CN100511209C (en) | 2009-07-08 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101033976B (en) * | 2007-04-18 | 2011-07-27 | 江苏华科导航科技有限公司 | Method for prompting information of road condition of navigational instrument |
| WO2008146374A1 (en) * | 2007-05-30 | 2008-12-04 | Navitime Japan Co., Ltd. | Map display system, map display, and map display method |
| JP2009107815A (en) * | 2007-10-31 | 2009-05-21 | Toshiba Elevator Co Ltd | Remote monitoring system of elevator |
| CN101685445A (en) * | 2008-09-23 | 2010-03-31 | 黄音凯 | Method for expressing distance priority of network geographic information subject matters |
| CN101847339B (en) * | 2009-03-27 | 2012-07-04 | 北京四维图新科技股份有限公司 | Topology information generating method and device for road network of electronic map |
| CN102446203A (en) * | 2010-10-13 | 2012-05-09 | 北京高维信诚资讯有限公司 | Method and device for obtaining map |
| CN103185586B (en) * | 2011-12-30 | 2017-11-07 | 上海博泰悦臻电子设备制造有限公司 | Map-indication method and device, the guider for controlling map denotation |
| CN104700709A (en) * | 2013-12-05 | 2015-06-10 | 高德软件有限公司 | Map display method and device |
| CN105719351B (en) * | 2014-12-04 | 2018-09-28 | 高德软件有限公司 | A kind of method and apparatus of display electronic map |
| CN106201205A (en) * | 2016-07-11 | 2016-12-07 | 百度在线网络技术（北京）有限公司 | Display packing and device |
| CN111143709B (en) * | 2019-12-18 | 2023-11-21 | 深圳市超时空探索科技有限公司 | Revocation method and device in 3D map scene |
| CN111177598B (en) * | 2019-12-26 | 2023-06-27 | 深圳市超时空探索科技有限公司 | Geographic position jumping method |
| CN112287917A (en) * | 2020-12-30 | 2021-01-29 | 卡斯柯信号(北京)有限公司 | Target equipment searching method and device |
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