CN102023289B - Electronic device and map display method - Google Patents
Electronic device and map display method Download PDFInfo
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- CN102023289B CN102023289B CN200910306901A CN200910306901A CN102023289B CN 102023289 B CN102023289 B CN 102023289B CN 200910306901 A CN200910306901 A CN 200910306901A CN 200910306901 A CN200910306901 A CN 200910306901A CN 102023289 B CN102023289 B CN 102023289B
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Abstract
The invention relates to a map display method, which comprises the following steps of: receiving a satellite signal transmitted by a satellite, and generating the current position information for reflecting the current position of an electronic device provided with a global positioning system (GPS) signal receiving module according to the received satellite signal; acquiring the resolution of a display screen of the electronic device; establishing a mapping relationship between the current position information and the display screen by taking the current position information as the center of the display screen; acquiring a position information group corresponding to the edge of the display screen according to the acquired resolution and the established mapping relationship; transmitting the current position information and the position information group to a map server in network connection with the electronic device; receiving corresponding preset map data transmitted by the map server according to the current position information and the position information group; and displaying a map matched with the display screen in the display screen according to the received map data. The invention also provides the electronic device with navigation function.
Description
Technical field
The present invention relates to navigation field, particularly a kind of electronic installation and map-indication method.
Background technology
GPS (GPS, Global Positioning System) has been widely used in the electronic apparatus as personal navigation equipment.According to existing method: electronic apparatus is stored the very big map of data volume in advance; After the navigation feature that starts electronic apparatus; Electronic apparatus receives from the signal of gps satellite and through handling the signal that is received and produces the current location information that is used to react the electronic apparatus current location; Then from the map that prestores, select corresponding map to show, and in the map that shows, indicate the current location of electronic apparatus according to the current location information that produces.
Yet; Owing to be stored in the map datum amount huger (data volume is more than 1G) in the electronic apparatus in advance; Taken the storage space of electronic apparatus, caused the storage space of electronic apparatus to become not enough, electronic apparatus can't in time respond user's operation; In addition, the user needs spended time to update stored in the map in the electronic apparatus, to guarantee the integrality of geography information in the map.So, brought the inconvenience of using to the user.
Summary of the invention
Given this, be necessary to provide a kind of electronic installation that is user-friendly to navigation feature.
Also be necessary to provide a kind of map-indication method.
A kind of electronic installation; Be used to connect map server; This electronic installation comprises gps signal receiver module, control module, communication module and display screen; The gps signal receiver module is used to receive the positioning signal that artificial satellite sends, and produces the current location information of electronic installation according to the positioning signal that receives.This control module is used to obtain the resolution of display screen; And the mapping relations between current location information and display screen are set up at the center that with the current location information is display screen; And produce the coordinate points corresponding location information sets corresponding, and through communication module current location information and location information sets are sent to this electronic installation and to set up the map server that network is connected with display screen edge pixel point according to the mapping relations of resolution of obtaining and foundation.This control module also is used for the map datum that adapts with display screen size with being transmitted according to current location information and location information sets by map server of receiving of communication module and offers display screen and show.
A kind of map-indication method comprises the steps:
Receive the satellite-signal of satellites transmits, produce the current location information that reaction is provided with the electronic installation current location of gps signal receiver module according to the satellite-signal that receives;
Obtain the resolution of the display screen of electronic installation;
With the current location information is the center of display screen, sets up the mapping relations between current location information and display screen;
Mapping relations according to resolution of obtaining and foundation obtain and display screen edge corresponding position information group;
Send current location information and location information sets and set up the map server that network is connected with electronic installation;
Receive the corresponding preset map datum of map server according to current location information and location information sets transmission;
In display screen, show the map that adapts with display screen according to the map datum that receives.
Through above-mentioned electronic installation and map-indication method; The user is after the navigation feature of unlocking electronic device; Electronic installation sends to electronic installation with the current location information that produces and with display screen edge corresponding position information group and sets up the special map server that network is connected, from map server, to obtain the map that adapts with display screen size.So, the user need not to carry out the operation of store map data to electronic installation and regular update store map data, and electronic installation just capable of using finds current location and the geographical environment on every side of oneself.
Description of drawings
Fig. 1 is the network architecture synoptic diagram of the electronic installation of a preferred embodiments.
Fig. 2 is the functional block diagram of electronic installation among Fig. 1.
Fig. 3 is the functional block diagram of the control module in the electronic installation of Fig. 2.
Fig. 4 is the functional block diagram of control module of the electronic installation of another preferred embodiments.
Fig. 5 is the map-indication method process flow diagram of a preferred embodiments.
Embodiment
As shown in Figure 1, it is the network architecture synoptic diagram of the electronic installation 30 of a preferred embodiments.Electronic installation 30 is connected with map server 40 through network 20.Electronic installation 30 receives the positioning signal 10 that artificial satellite sends, and produces current location information according to the positioning signal that receives 10.Electronic installation 30 offers map server 40 through network 20 with current location information, and receives the map datum that map server 40 provides according to the current location information that receives.Electronic installation 30 demonstrates map according to the map datum that receives, with for reference.Electronic installation 30 can be mobile phone with navigation feature, personal digital assistant, handheld device etc.The internetwork connection mode that electronic installation 30 and map server 40 are set up can be wireless mode or wired mode or wireless and wired combination.Store various maps in the map server 40, and can dynamically update the data in the map.
Please be simultaneously referring to Fig. 2, electronic installation 30 comprises gps signal receiver module 31, load module 32, control module 33, communication module 34 and display screen 35.
This gps signal receiver module 31 is used to receive the positioning signal 10 that artificial satellite sends, and produces current location information according to the positioning signal that receives 10, and current location information is offered control module 33.Wherein, current location information is the coordinate points in the rectangular coordinate system in space, and this current location packets of information is drawn together longitude, latitude value and height value.
This load module 32 is used to respond user's input operation, and produces corresponding input information.For example, load module 32 can be button, touch-screen etc.
This display screen 35 is used for the data that display control module 33 provides.For example, display screen 35 can be LCDs.
This control module 33 is used to obtain the resolution of display screen 35; And the mapping relations between current location information and display screen are set up at the center that with the current location information is display screen 35; And produce the coordinate points corresponding location information sets corresponding, and through communication module 33 current location information and location information sets are sent to this electronic installation 30 and to set up the map server 40 that network is connected with display screen 35 edge pixel points according to the mapping relations of resolution of obtaining and foundation.Wherein, The above-mentioned mode of setting up mapping relations is: the current location information in the rectangular coordinate system in space is done to obtain the coordinate points under the plane right-angle coordinate after earth coordinates and the conversion of Gauss's coordinate system, and the coordinate points that this coordinate points and the central pixel point of display screen 35 is corresponding is corresponding.Location information sets comprises a plurality of and edge coordinate point corresponding position information display screen 35.
This control module 33 also is used for the map datum that adapts with display screen 35 sizes with being transmitted according to current location information and location information sets by map server 40 of receiving of communication module 34 and offers display screen 35 and show.
See also Fig. 3, control module 33 comprises central processing unit (Central Processing Unit, CPU) 330 and storer 331.This storer 331 is used for storage operating system program and application program.Wherein, comprise in this application program that resolution obtains program 333, coordinate points converse routine 334, edge coordinate dot generation program 335, and operating system program 332.Move the central processing unit 330 of operating system program 332 and can manage and control gps signal receiver module 31, load module 32, communication module 34, storer 331 and display screen 35 in the electronic installation 30.For example, central processing unit 240 because of the instruction that the operation that responds user's unlocking electronic device 30 navigation features produces, is carried out this application program according to load module 32.
This central processing unit 330 produces following functional unit after this application program of operation:
The resolution acquiring unit is used to obtain the resolution of display screen 35;
The coordinate points converting unit is used to set up the mapping relations of 35 of current location information and display screens, and converts the pairing coordinate points of the pixel on the display screen 35 into the positional information relevant with current location information according to mapping relations.
Edge coordinate dot generation unit is used for the edge pixel that resolution according to the display screen 35 that obtains produces display screen 35 and puts pairing coordinate points, and the coordinate points that produces is offered the coordinate points converting unit.
For example, the resolution of the display screen 35 that obtains of resolution acquiring unit is 320x240.The coordinate points converting unit with current location information convert under the plane right-angle coordinate coordinate points for (a, b), and with coordinate points (a, b) corresponding with display screen 35 centers coordinate points (160,120) is corresponding.Edge coordinate dot generation unit calculates a coordinate points that pixel is corresponding with display screen 35 edges, like coordinate points (160,240), and coordinate points (160,240) is offered the coordinate points converting unit.The coordinate points converting unit coordinate points (160,240) is converted into (a, b+120), and will (a b+120) converts positional information to.
In this embodiment; Electronic installation 30 requires map server 40 to transmit the map identical with the display size of display screen 35; So can not receive map greater than the display size of display screen 35; So, be connected under the situation of map server 40 through GPRS (GeneralPacket Radio Service) network, can reduce the data traffic between electronic installation 30 and the map server 40 the user.
In another preferred embodiments; Control module 33 judges also whether the current location information that is produced in real time by gps signal receiver module 31 exceeds the border of the map of display screen 35 current demonstrations; And when judging current location information and exceed the border of map of current demonstration, ask map server 40 that corresponding map is provided again; Control module 33 also responds the operation that the user selects the point of interest on the map that display screen 35 shows, the dot position information of becoming interested, and send the point of interest positional informations and the interest information that prestores is given map server 40 through communication module 34.This interest information can be snack bar, public transport platform, bank etc.Map server 40 provides corresponding information to electronic installation 30 according to the point of interest positional information and the interest information that receive.In addition, load module 32 in the electronic installation 30 and display screen 35 can be replaced by touch-screen.
Please accordingly, in storer 331, store subroutines such as also comprising the point of interest positional information generator program 336 and the determining program 337 that crosses the border in interest information, the application program simultaneously referring to Fig. 4.This central processing unit 330 also produces following functional unit after this application program of operation:
The coordinate of interest points generation unit is used to respond the operation of the point of interest on the map that the user selects current demonstration, produces and the pairing coordinate points of point of interest, and offers the coordinate points converting unit, obtains the point of interest positional information to utilize the coordinate points converting unit.
Judging unit crosses the border; The current location information that is used for being produced by gps signal receiver module 31 and the positional information of location information sets compare; The border that whether exceeds the current map of demonstration with the current location of confirming electronic installation 30; And when the current location of confirming electronic installation 30 exceeds the border of map of current demonstration, call coordinate points converting unit and edge coordinate dot generation cell operation.
For example; When this user utilizes writing pencil to click point of interest on the map of screen displaying; Control module 33 is obtained the pairing coordinate points of pixel that writing pencil contacts with touch-screen, converts this coordinate points into the point of interest positional information relevant with current location information then and according to mapping relations; Control module 33 judges also whether the current location information of gps signal receiver module 31 generations exceeds the border of the map of the current demonstration of touch-screen; When judging current location information that gps signal receiver module 31 produces and do not exceed the border of map, send the point of interest positional informations and the interest information that prestores is given map server 40 through communication module 34.Map server 40 provides corresponding information to electronic installation 30 according to the point of interest positional information and the interest information that receive.
As shown in Figure 5, it is the process flow diagram of the map-indication method of a preferred embodiments, and this method comprises the steps:
Step S601, the satellite-signal of reception satellites transmits produces the current location information that reaction is provided with the electronic installation current location of gps signal receiver module according to the satellite-signal that receives.Wherein, current location information is the coordinate points in the rectangular coordinate system in space, and this current location packets of information is drawn together longitude, latitude value and height value.
Step S602 obtains the resolution of the display screen of electronic installation.
Step S603 is the center of display screen with the current location information, sets up the mapping relations between current location information and display screen.The above-mentioned mode of setting up mapping relations is: the current location information in the rectangular coordinate system in space is done to obtain the coordinate points under the plane right-angle coordinate after earth coordinates and the conversion of Gauss's coordinate system, and the coordinate points that this coordinate points and the central pixel point of display screen is corresponding is corresponding.
Step S605 obtains and display screen edge corresponding position information group according to the mapping relations of resolution of obtaining and foundation.
Step S607 sends current location information and location information sets and is set up the map server that network is connected with electronic installation.
Step S609 receives the corresponding preset map datum of map server according to current location information and location information sets transmission.
Step S611 shows the map that adapts with display screen in display screen according to the map datum that receives.
In other embodiments, this map-indication method is further comprising the steps of:
Whether the current location information that judgement is produced by the gps signal receiver module in real time exceeds the border of the current map of display screen demonstration;
When judging current location information and exceed the border of the map that current display screen shows, ask map server that corresponding map is provided again.
In other embodiments, also can whether depart from the central point mode of display screen, come the map that shows in the update displayed screen through judging current location information.
Through above-mentioned electronic installation and map-indication method; The user is after the navigation feature of unlocking electronic device; Electronic installation sends to electronic installation with the current location information that produces and with display screen edge corresponding position information group and sets up the special map server that network is connected, from map server, to obtain the map that adapts with display screen size.So, the user need not to carry out the operation of store map data to electronic installation and regular update store map data, and electronic installation just capable of using finds current location and the geographical environment on every side of oneself.
Claims (9)
1. electronic installation; Be used to connect map server; This electronic installation comprises gps signal receiver module, control module, communication module and display screen; The gps signal receiver module is used to receive the positioning signal that artificial satellite sends; And produce the current location information of electronic installation according to the positioning signal that receives; It is characterized in that: this control module is used to obtain the resolution of display screen, and is that the mapping relations between current location information and display screen are set up at the center of display screen with the current location information, and produces the coordinate points corresponding location information sets corresponding with display screen edge pixel point according to the mapping relations of resolution of obtaining and foundation; And current location information and location information sets being sent to this map server through communication module, this control module also is used for the map datum that adapts with display screen size with being transmitted according to current location information and location information sets by map server of receiving of communication module and offers display screen and show.
2. electronic installation as claimed in claim 1 is characterized in that: the mode of setting up mapping relations is: current location information is transformed into the coordinate points under the rectangular coordinate system, and the coordinate points that this coordinate points and the central pixel point of display screen is corresponding is corresponding.
3. electronic installation as claimed in claim 2; It is characterized in that: control module also is used for whether real-time judge is exceeded the map of the current demonstration of display screen by the real-time current location information that produces of gps signal receiver module border; And when judging current location information and exceed the border of map of current demonstration, ask map server that corresponding map is provided again.
4. electronic installation as claimed in claim 3; It is characterized in that: control module also is used to respond the operation of the point of interest on the current map that the user selects to show; The dot position information of becoming interested, and send the point of interest positional information and the interest information that prestores is given map server through communication module.
5. electronic installation as claimed in claim 4 is characterized in that: this display screen is a touch-screen.
6. electronic installation as claimed in claim 4 is characterized in that: this control module comprises central processing unit and storer, and storer is used to store an application program, and central processing unit produces following functional unit after this application program of operation:
The resolution acquiring unit is used to obtain the resolution of display screen;
The coordinate points converting unit is used to set up the mapping relations between current location information and display screen, and converts the pairing coordinate points of the pixel on the display screen into the positional information relevant with current location information according to mapping relations;
Edge coordinate dot generation unit is used for the edge pixel that resolution according to the display screen that obtains produces display screen and puts pairing coordinate points, and the coordinate points that produces is offered the coordinate points converting unit;
Judging unit crosses the border; The current location information that is used for being produced by the gps signal receiver module and the positional information of location information sets compare; The border that whether exceeds the current map of demonstration with the current location of confirming electronic installation; And when the current location of confirming electronic installation exceeds the border of map of current demonstration, call coordinate points converting unit and edge coordinate dot generation cell operation;
The coordinate of interest points generation unit; Be used to respond the operation that the user selects the point of interest on the current map that display screen shows; Produce and the pairing coordinate points of point of interest, and offer the coordinate points converting unit, obtain the point of interest positional information to utilize the coordinate points converting unit.
7. a map-indication method comprises the steps:
Receive the satellite-signal of satellites transmits, produce the current location information that reaction is provided with the electronic installation current location of gps signal receiver module according to the satellite-signal that receives;
Obtain the resolution of the display screen of electronic installation;
With the current location information is the center of display screen, sets up the mapping relations between current location information and display screen;
Mapping relations according to resolution of obtaining and foundation obtain and display screen edge corresponding position information group;
Send current location information and location information sets and set up the map server that network is connected with electronic installation;
Receive the corresponding preset map datum of map server according to current location information and location information sets transmission;
In display screen, show the map that adapts with display screen according to the map datum that receives.
8. map-indication method as claimed in claim 7 is characterized in that: this method is further comprising the steps of:
Whether the current location information that judgement is produced by the gps signal receiver module in real time exceeds the border of the map of the current demonstration of display screen;
When judging current location information and exceed the border of map of the current demonstration of display screen, ask map server that corresponding map is provided again.
9. map-indication method as claimed in claim 7 is characterized in that: the mode of setting up mapping relations is: current location information is transformed into the coordinate points under the rectangular coordinate system, and the coordinate points that this coordinate points and the central pixel point of display screen is corresponding is corresponding.
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Families Citing this family (10)
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CN102395104A (en) * | 2011-10-25 | 2012-03-28 | 桂林理工大学 | Method for regulating map scale automatically and dynamically for mobile terminal |
US9167390B2 (en) * | 2013-03-06 | 2015-10-20 | Qualcomm Incorporated | Adaptive assistance data for tiered service and efficiency in indoor positioning |
CN103344974A (en) * | 2013-06-19 | 2013-10-09 | 上海旅游网旅行服务有限公司 | Method and system for locating through scenic region guide map |
CN105021181B (en) * | 2014-04-28 | 2018-03-30 | 高德信息技术有限公司 | A kind of drawing electronic map area determination method, device and navigation equipment |
CN104065708A (en) * | 2014-06-13 | 2014-09-24 | 可牛网络技术(北京)有限公司 | Map display method and relevant device |
CN104613967B (en) * | 2015-01-23 | 2017-03-29 | 中国民航大学 | The chart management method of portable airborne navigation system |
CN106705973A (en) * | 2016-12-22 | 2017-05-24 | 深圳市智汇机器人科技有限公司 | Indoor navigation turning calculating method and system |
CN109760066B (en) * | 2018-11-30 | 2021-02-26 | 南京熊猫电子股份有限公司 | Service robot map positioning and calibrating method |
CN109686226A (en) * | 2019-01-03 | 2019-04-26 | 淮南矿业(集团)有限责任公司 | A kind of update method and device of topographical map of mining area |
CN110690591A (en) * | 2019-10-12 | 2020-01-14 | 广东电网有限责任公司 | Grounding rod positioning management system for transformer substation |
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