JP6422697B2 - Screen display device and screen display system - Google Patents

Description

  The present invention relates to a screen display device and a screen display system for correctly displaying an arrow on a map screen such as navigation of a mobile terminal.

  Hereinafter, in this specification, “portable terminal” refers to a smartphone, a mobile phone, a portable tablet, a PDA (personal digital assistant), a portable navigation device, a portable personal computer, other small portable computers, mobile terminals, and portable terminals. A telephone or the like is designated.

  In recent years, a technique for utilizing a portable terminal or the like as a navigation device has been widespread. In this technology, a GPS (Global Positioning System) receiver provided in a mobile terminal is used to measure the current location, and the direction from the measured current location to the destination is indicated by an arrow to guide the user. However, since positioning by GPS has a large error and low accuracy, there is a possibility that the arrow is displayed in the wrong direction and misguided.

  Japanese Patent Application Laid-Open No. 2004-133867 proposes displaying the movement destination direction as a fan-shaped figure as a method for solving this problem. That is, in Patent Document 1, in a navigation device using a portable terminal, an error distance of a positioning unit that measures a current location is grasped, and when the distance between points is larger than the error distance, a fan-shaped direction display unit is used to detect a fan shape. It is described that the direction of the moving destination is displayed with a figure.

JP 2014-006077 A

  According to the above-described navigation technique described in Patent Document 1, since the tip is a fan-shaped figure that expands, erroneous display of the traveling direction can be avoided, but it is difficult to determine which direction the fan should expand. In addition, it is unfamiliar to use a fan-shaped figure instead of an arrow for guidance.

  Accordingly, an object of the present invention is to provide a screen display device and a screen display system that can display a guidance display in the direction of travel with an arrow and that can display an arrow pointing in the correct direction even in a low-precision positioning environment. There is to do.

  The screen display device of the present invention includes map information acquisition means for acquiring map information, positioning information acquisition means for acquiring current position positioning information, vector calculation means for calculating a display vector from the current position to the next node, and map information And display means for displaying the map information acquired by the acquisition means, the current position positioning information acquired by the positioning information acquisition means, and the display vector calculated by the vector calculation means by arrows or arrows. The vector calculation means advances from the next node by a distance that is a multiple of the distance between the previous node and the next node on a straight line connecting the previous node and the next node of the current location. The position is set as a virtual node, and a vector from the positioning current position indicated by the current position positioning information to the position of the virtual node is set as a display vector.

  Provided is a screen display device that displays an arrow for each node from a current location to a destination on a map screen of a mobile terminal or the like. In this apparatus, an arrow line or an arrow is displayed based on a display vector that starts from the current location and ends at a virtual node. The virtual node V is on a straight line connecting the node A immediately before the current location and the node B next to the current location, and is a multiple of the distance between the previous node A and the next node B ( M times) is set at a position away from the next node B. Thus, according to the present invention, the traveling direction is displayed on the map by the arrow line or the arrow, so that it is easy to become familiar with. In addition, since the current position and the next node are not simply connected as an arrow line or an arrow, but the current position and the virtual node V are connected, the positioning error of the current position exceeding 10 m due to GPS positioning. Can be almost absorbed. Therefore, even in such a positioning environment where the positioning accuracy of the current location is low, it is possible to reliably prevent the arrow line or the arrow from being directed in the wrong direction and to accurately guide to the destination.

  The vector calculation means uses A (Xa, Ya) as the position of the previous node, B (Xb, Yb) as the position of the next node, M as a multiple of multiples, P (Xp, Yp) as the current position of the positioning, If c is a constant, the position of the virtual node is calculated from V (Xb + M (Xb−Xa), Yb + M (Yb−Ya)), and the display vector is y = [{Yb + M (Yb−Ya) −Yp} / {Xb + M. (Xb−Xa) −Xp}] x + c is preferable.

  In this case, it is more preferable that the multiple M is M ≧ 10.

  The screen display system of the present invention can be connected to a map server storing map information for at least one scale, a GPS satellite, and the map server via a communication line, and can receive radio waves from the GPS satellite. The above-mentioned screen display device is provided.

  According to the present invention, the traveling direction is displayed on the map by an arrow line or an arrow, so that it is easy to become familiar. In addition, since the current position and the next node are not simply connected as an arrow line or an arrow, but the current position and the virtual node V are connected, the positioning error of the current position exceeding 10 m due to GPS positioning. Can be almost absorbed. Therefore, even in such a positioning environment where the positioning accuracy of the current location is low, it is possible to reliably prevent the arrow line or the arrow from being directed in the wrong direction and to accurately guide to the destination.

1 is a block diagram schematically showing an overall system configuration in an embodiment of a screen display system of the present invention. It is a block diagram which shows schematically the structure of the smart phone in the screen display system of FIG. It is a flowchart which shows roughly the processing flow of the application of the smart phone in the screen display system of FIG. It is a block diagram which shows roughly the system configuration constructed | assembled by implementing the application of a smart phone. It is a figure explaining the operation principle of the application of a smart phone compared with a prior art. It is a figure which shows an example of the screen displayed on a display by implementing the application of a smart phone. It is a figure which shows an example of the screen displayed on a display by implementing the application of a smart phone.

  FIG. 1 schematically shows the entire system configuration in an embodiment of the screen display system of the present invention.

  In the figure, 10 is a smartphone as an example of a screen display device, 11 is a map server to which the smartphone 10 can be connected via a communication line, 12 is always transmitting GPS satellite radio waves, and the smartphone 10 A plurality of GPS satellites capable of receiving radio waves are shown.

  In this embodiment, a smartphone is used as an example of the screen display device. However, a mobile phone, a personal information terminal, a portable tablet, a PDA, a portable navigation device, a portable personal computer, and other small portable devices can be used instead of the smartphone. A computer, a mobile phone, or the like may be used.

  FIG. 2 schematically shows the configuration of the smartphone 10 in the present embodiment. The smartphone 10 includes, in hardware, an application processor 10a generally including a CPU (Central Processing Unit) including a multi-core and cache, a GPU (Graphic Processing Unit), a memory controller, a peripheral device controller, and a display controller, and an application processor. A DRAM (Dynamic Random Access Memory) 10b which is connected to the main processor 10a, and a flash memory 10c which is connected to the application processor 10a and stores an OS (operation system) and application programs. A baseband processor 10d connected to the application processor 10a and a baseband processor A radio unit 10e connected to 10d, an antenna 10f connected to the radio unit 10e, a power / audio LSI (semiconductor integrated circuit) chip 10g connected to the application processor 10a and the baseband processor 10d, A battery 10h connected to the power / audio LSI chip 10g, a speaker 10i connected to the power / audio LSI chip 10g, a touch panel display 10j connected to the application processor 10a, and an application processor 10a A GPS chip 10k connected to the application processor 10a, and a peripheral connected to the application processor 10a, such as a camera, a wireless LAN, Bluetooth “Bluetooth” (registered trademark), and sensors. Side device 10l.

  A CPU provided in the application processor 10a is configured to execute an application program stored in the flash memory 10c in accordance with a basic program such as an OS or a boot program to perform the processing of this embodiment. The CPU is configured to control the operation of the application processor 10a.

  The DRAM 10b is used as a main memory, and is configured to temporarily store programs and data transferred from the flash memory 10c. The DRAM 10b is also used as a work area for temporarily storing various data during program execution. As will be described later, the CPU cache is also used for the same purpose.

  In the smartphone 10 having such a configuration, when the program is started, the application processor 10a first secures a program storage area, a data storage area, and a work area in the DRAM 10b, and fetches the program and data from the flash memory 10c. Store in the storage area and data storage area. Next, application processing is executed based on the program stored in the program storage area. Note that the application processor 10a may directly fetch a program and data from the flash memory 10c and execute application processing based on the program.

  In the map server 11, for example, map information of a predetermined area (for example, a predetermined municipality) registered in advance is stored as map information for at least one scale. In this embodiment, the map server 11 is a server that provides map information such as a map service server on the Internet, but may be another map information providing server.

  FIG. 3 schematically shows the processing flow of the application of the smartphone 10 in the present embodiment. As shown in the figure, when the application is started, the application processor 10a of the smartphone 10 receives the position information of the destination by the user's operation (finger touch or left click) from an operation screen (not shown) on the display 10j. It is determined whether or not there has been a route guidance or destination guidance request instruction (step S1).

  Only when it is determined that there is a request instruction (in the case of YES), the current location positioning information that is constantly updated is acquired (step S2). Note that the smartphone 10 constantly updates the positioning information of the current location with the GPS signal from the GPS satellite 12 in the background, and stores the updated current location positioning information in, for example, the DRAM 10b.

  Next, the application processor 10a acquires necessary map information in a predetermined area (for example, a predetermined municipality) registered in advance from the map server 11 corresponding to the positioning current location, and displays it on the display 10j (step S3). .

  Next, the application processor 10a acquires destination information indicating the position of the destination and current position information indicating the position of the initial current position (step S4). These destination information and current location information are performed, for example, by the user performing an input operation on a map displayed on the display 10j.

  Next, the application processor 10a calculates a route from the initial current location indicated by the current location information to the destination indicated by the destination information (step S5).

  Thereafter, the application processor 10a calculates a display vector, which will be described in detail later (step S6), displays an arrow line or an arrow on the screen based on the calculated display vector (step S7), and ends this application. .

  As shown in FIG. 4, by this application, the smartphone 10 has a map information acquisition means 40 for acquiring necessary map information in a predetermined area (for example, a predetermined municipality) registered in advance from the map server 11, and a GPS satellite. Positioning information acquisition means 41 that constantly updates and acquires its current location with GPS signals from 12, a route calculation means 42 that calculates a route from the input true current location to the destination, and a destination from the calculated route Vector calculation means 43 for calculating the display vector to the map, map information obtained from the map information acquisition means 40, current position positioning information obtained from the positioning information acquisition means 41, route information obtained from the route calculation means 42, and vector calculation means Display means 44 for displaying an arrow line or an arrow based on the display vector calculated by 43 is constructed.

  The display vector calculation processing in step S6 (vector calculation means 43) will be described in detail below.

  FIG. 5 explains the operation principle of a smartphone application in comparison with the prior art. FIG. 5A shows a conventional arrow display method, and FIG. 5B shows an arrow display method according to the present embodiment. Yes.

  As shown in FIGS. 5 (A) and 5 (B), the route calculation means 42 uses the node 1, the node 2, the node 3, the node 4, the node 5, the node 6, and the node 7 from the initial current location to the destination. Suppose that the route to is set.

  In this case, according to the arrow display method of the prior art, the positioning current position 51 has a positioning error exceeding 10 m due to GPS positioning as shown in FIG. Therefore, the calculated vector going from the current position 51 to the next node 2 indicated by reference numeral 52 has a large error angle with respect to the original vector, as indicated by reference numeral 53.

  On the other hand, according to the arrow display method of the present embodiment, as shown in FIG. 5B, a straight line connecting the node 55 (node 1) immediately before the true current location 54 and the next node 56 (node 2). Above, the position advanced from the next node 56 by a distance that is a multiple of the distance between the previous node 55 and the next node 56 (in this case, 10 times) is set as a virtual node 57, and the current location positioning information is Since the vector from the current position 58 to the position of the virtual node 57 is used as the display vector, the error angle becomes very small as indicated by reference numeral 59.

  Specifically, according to the present embodiment, the display vector calculation processing in step S6 (vector calculation means 43) is performed by setting the position of the node 55 immediately before the current location to A (Xa, Ya) and the next of the current location. The position of the node 56 is B (Xb, Yb), a multiple of multiples is M (in this embodiment, M = 10, but preferably M ≧ 10), and the positioning current position 54 is P (Xp, Yp). ), Where c is a constant, the position of the virtual node 57 is calculated from V (Xb + M (Xb−Xa), Yb + M (Yb−Ya)). Further, the display vector is obtained from y = [{Yb + M (Yb−Ya) −Yp} / {Xb + M (Xb−Xa) −Xp}] x + c. An arrow line or an arrow is displayed by the display vector thus obtained.

  FIG. 6 shows an example of a screen displayed on the display 10j by executing this application. In the figure, 60 is a map displayed on the screen, 61 is an initial current location shown on the map 60, and 62 is an arrow line to a destination 63 shown on the map 60.

  FIG. 7 shows an example of a screen displayed on the display 10j by executing this application. In the figure, reference numeral 70 denotes a camera image displayed on the screen, and 71 denotes an arrow shown on the camera image 70.

  As described above, according to the present embodiment, since the measured current location 51 and the next node 52 are not connected but the measured current location 58 and the virtual node 57 are connected, the error angle is remarkably large. It becomes smaller and can almost absorb the positioning error of the present location exceeding 10 m by GPS positioning. Therefore, even in such a positioning environment where the positioning accuracy of the current location is low, it is possible to reliably prevent the arrow line or the arrow from being directed in the wrong direction and to accurately guide to the destination.

  All the embodiments described above are illustrative of the present invention and are not intended to be limiting, and the present invention can be implemented in other various modifications and changes. Therefore, the scope of the present invention is defined only by the claims and their equivalents.

  The present invention can be applied to a map screen display in a portable terminal and a map screen display in an automobile navigation system.

10 Smartphone 10a Application processor 10b DRAM
10c Flash memory 10d Baseband processor 10e Radio unit 10f Antenna 10g Power supply / audio LSI chip 10h Battery 10i Speaker 10j Touch panel display 10k GPS chip 10l Peripheral device 11 Map server 12 Multiple GPS satellites 40 Map information acquisition means 41 Positioning information Acquisition means 42 Route calculation means 43 Vector calculation means 44 Display means 50, 54 True current location 51, 58 Positioning current location 52, 56 Next node 53, 59 Error angle 55 Previous node 57 Virtual node 60 Map 61 Initial current location 62 Arrow line 63 Destination 70 Camera image 71 Arrow

Claims (4)

A map information acquiring section for acquiring map information, the positioning information acquiring means for acquiring current location positioning information, a route calculating means for calculating a route to the destination through the original from the current position a plurality of nodes, the location from the current location Vector calculation means for calculating a display vector to the next node of the map, map information acquired by the map information acquisition means, current location information acquired by the positioning information acquisition means, and display vector calculated by the vector calculation means Display means for displaying with an arrow line or an arrow,
The vector calculating means is a straight line connecting the previous node of the current location and the next node among the calculated nodes, and between the previous node and the next node. A position advanced from the next node by a multiple of the distance is set as a virtual node, and a vector from the positioning current position indicated by the current position positioning information to the position of the virtual node is set as the display vector. A screen display device characterized by that.   The vector calculating means sets the position of the previous node as A (Xa, Ya), the position of the next node as B (Xb, Yb), the multiple of the multiples as M, and the current position as P ( Assuming that Xp, Yp) and c are constants, the position of the virtual node is calculated from V (Xb + M (Xb−Xa), Yb + M (Yb−Ya)), and the display vector is y = [{Yb + M (Yb−Ya). 2. The screen display device according to claim 1, wherein the screen display device is configured to be obtained from:) − Yp} / {Xb + M (Xb−Xa) −Xp}] x + c.   The screen display device according to claim 2, wherein the multiple M is M ≧ 10.   4. A map server storing map information for at least one scale, a GPS satellite, and being connectable to the map server via a communication line and capable of receiving radio waves from the GPS satellite. A screen display system comprising the screen display device according to any one of the above.

Images