JP2007155421A - Present position display method and present position display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To more correctly modify positional information by a mobile terminal etc. <P>SOLUTION: The present position display terminal is provided with: a receiver part 17; a position detection part 11; a map data acquisition part 14; an operation part 15 capable of inputting the positional information; a position memory part 12; a control part 13 for controlling for displaying the positional information and peripheral map data on the screen; and a display 16 for displaying the information on the screen. Wherein, the positional memory part 12 stores the detected present positional information detected by the position detection part 11, the modified present positional information modified by the operation part 15, and relative error information calculated from the detected present positional information and the modified present positional information, and the control part 13 characteristically displays either of detected present positional information or the modified present positional information, or both the same simultaneously. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to current position display of a portable terminal or the like and correction thereof.

  As represented by in-vehicle navigation devices that use GPS (Global Positioning System) satellites, positioning information services become more accurate as they become more widespread. The number of commercial application services used is also increasing. And the range of use of the location information service has also expanded to portable terminals including mobile phones, PHS (Personal Handyphone System), PDA (Personal Digital Assistance), and other dedicated terminals, which use GPS satellites. In addition, there are a method for measuring the inertia due to the movement of the terminal and calculating the relative position information, or a method for providing the position information using a communication means with the base station. Furthermore, in the report “Technical Conditions for Caller Location Information Notification Function for Emergency Calls from Mobile Phones” published by the Ministry of Internal Affairs and Communications on May 17, 2004, “From April 2007, mobile phone operators As a general rule, 3G mobile phone terminals that are newly provided will support location information notification functions based on the GPS positioning method, and will continue to use location information services and commercial application services that use them in the future. Increasing is inevitable.

  With regard to the accuracy of position detection of this location information service, in-vehicle navigation devices using GPS satellites have relatively high detection accuracy, and the accuracy is regarded as a problem on the premise that the vehicle travels at a high speed on the road. It is also possible for the user to correct the position as necessary. Similarly, in a portable terminal, not only the provision of a position information service using a GPS satellite or the like, but also means for correcting the position (see, for example, Patent Documents 1 and 2).

However, even with a portable terminal, even if it is a position information service using a GPS satellite, the accuracy of position detection is relatively low compared to in-vehicle navigation, and this continues while the user moves at a low speed by walking or the like. When using it for the purpose of confirming the position, the range of use of the location information service is limited when the user cannot accurately grasp his / her position due to the error of position detection or the re-occurrence of error after position correction. There is a concern that
JP-A-8-322091 JP 2003-207350 A

  The method of using the location information service of the terminal user while walking is to check the current location and route on the map in order to reach the destination, such as restaurants and service stores that the user wants to use around the current location of the user Searching for presence / absence or location / opening time, finding nearby barrier-free facilities for people with physical disabilities, and confirming emergency call destinations.

  In addition, as a commercial application service that uses location information for terminal users who are walking, after confirming the current location information of the user, for example, use advertisement / service information of stores near the current location. For example, it is possible to send information to a portable terminal of a person, information on the last train time of the nearest station, selection of the nearest destination for a visiting sales representative, and a visit instruction.

  However, in order to make effective use of the above-described location information service usage examples widely, in the portable terminal, accurate location information is detected by detecting location information with high accuracy or by a suitable correction method for the current location. Understanding the information is a challenge.

  It is an object of the present invention to provide information for more accurately grasping the current position to a terminal user who is walking even in a situation where the detection accuracy of position information such as a portable terminal is low.

  In order to solve the above-described problems, the present invention acquires a receiving unit that receives positioning information, a position detecting unit that detects a current position of a terminal user based on the received positioning information, and its surrounding map data A map data acquisition unit, an operation unit capable of inputting arbitrary position information different from the current position or a correction value of the current position, a position storage unit storing a plurality of position information, position information, and surrounding map data Current position information of the terminal user is displayed using a user terminal that includes a control unit that performs control for displaying the information on the screen and a display unit that displays information on the control unit on the screen. In the position display method, the position storage unit includes detection current position information detected by the position detection unit, correction current position information input to the operation unit, and the detection current position information and the correction current position information. Calculated from The present invention provides a current position display method and a current position display device characterized in that the control section stores at least one of the detected current position information and the corrected current position information at the same time. To do.

  ADVANTAGE OF THE INVENTION According to this invention, even if the detection accuracy of position information, such as a portable terminal, is low, it becomes possible for the terminal user who is walking to provide the information for grasping | ascertaining a present position more correctly.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

FIG. 1 is a diagram showing an example of the overall configuration of the present invention. Portable terminals that can use the location information service are not limited to portable telephone terminals, but are also spreading to PHS terminals, PDA terminals, and other dedicated terminals. Further, even in-car car navigation devices that can be detached and carried and mobile PCs can be included in the present invention.
As shown in FIG. 1, the current position display device 1 includes a position detection unit 11, a position storage unit 12, a control unit 13, a map data acquisition unit 14, an operation unit 15, a display unit 16, and a reception unit. 17. The receiving unit 17 provided with the receiving antenna 17a receives position information data from a GPS satellite 18 or a base station 19 such as a mobile phone operator by wireless communication means with the outside.

  The detection accuracy of the location information service used in the portable terminal varies greatly depending on the accuracy of the reception unit 17 and the location detection unit 11 on the terminal side and the external usage environment of the GPS satellite 18 and the base station 19. The method with the highest position detection accuracy uses GPS satellites, but in general, the number of GPS satellites 18 that can be received simultaneously is three, and four is more desirable. In addition, when the information received from the GPS satellite 18 is insufficient, for the purpose of complementing the information, radio wave information from the base station 19 is received, or an inertial sensor is provided inside the terminal (not shown). The relative position information is calculated to correct the current position information. The accuracy of the current position information detected by the position detection unit 11 by the above method is said to be an error within about 10 meters when the conditions are good, and may be over 500 meters when the conditions are bad. ing.

  The terminal user starts measuring his / her current position information, and the detected current position information including a certain error by the above method is composed of latitude / longitude information, etc., and is stored in the position storage unit 12 and at the same time the control unit 13. The control unit 13 asks the map data acquisition unit 14 for data relating to the map around the received detected current position information. In the map data acquisition unit 14, the pedestrian acquires the map data and scaled peripheral map data suitable for browsing on the terminal screen by a method of obtaining each time by communicating with the map center via the reception unit 17, and the control unit 13. Return to. Note that the map acquired from the map center corresponds to the position detected by the position detection unit 11, and if the size is specified from the operation unit 15, the size is acquired. If not specified, the default size is acquired.

  The control unit 13 sends the detected current position information and the surrounding map data to the display unit in a format in which the current position can be displayed on the surrounding map, and displays it on the display unit (see the display example in FIG. 2). Here, since the detected current position information displayed on the peripheral map includes a certain error, the terminal user inputs the actual current position to the operation unit 15 as the corrected current position information. The operation unit 15 sends the newly input corrected current position information to the position storage unit 12 and simultaneously sends it to the control unit 13. The control unit 13 instructs the display unit 16 to display the correction information. Details regarding the operation and the correction display will be described later.

  Next, FIG. 2 is an example of the current position and the surrounding map in which the terminal user starts measuring the current position and the detected current position information is first displayed on the terminal screen. The display example of FIG. 2 varies depending on the location information service provided by the mobile phone operator or ASP (Application Service Provider) and the contents of the commercial application service using the location information service. The display unit 16 of FIG. The task display unit 22, the map display unit 23, and the current position 24, that is, the detected current position information is displayed on the map together with the character of the current position with a mark ♦, and the operation unit 15 in FIG. Illustrated as button 21.

  Here, the task display unit 22 is divided into a menu bar 22a, a positioning method display unit 22b, and a service display unit 22c. The menu bar 22a displays an operation instruction bar corresponding to the application service. The positioning method display unit 22b indicates the strength level of the position information received from the GPS satellite 18 and the dependency level on the correction method by the base station 19 or other means. In the service display unit 22c, the position information of the current position 24 when using the route guidance service is displayed in characters.

  The function button 21 is a function button that is provided in the mobile phone terminal as a standard feature. The function used for position correction when using the location information service is located at the center of the arrow key 21e. There is an F button 21f displayed in F letters. The other function buttons 21a to 21d can be assigned to operations such as a correction operation cancel operation and a location information service end operation, but the description thereof is omitted in this embodiment.

  The usage example of the screen displayed in FIG. 2 is an initial screen when the terminal user gets off Asagaya Station, stands in the shopping street in front of the station, and starts using the route guidance service. The detected current position information is displayed as a current position 24 by ♦. The displayed information includes characteristic buildings around the current position 24, store name and signboard information, and confirms this with information actually obtained by standing in the shopping street, and the terminal user is displayed. When standing at a position different from the current position 24, the current position correction work is started. Hereinafter, the correction operation of the current position 24 will be described with reference to FIG.

  FIG. 3A shows a step of correcting the position by operating the function button 21, and FIG. 3B is a correction transition screen displayed on the map display unit 23 in each correction step. The correction of the current position 24 on the map data of the map display unit 23 is a large-scale correction by moving the map data, correcting the current position by moving the current position on the map, or both. This embodiment will be described in detail according to a method of moving and correcting the current position while fixing the map data.

  The start of (a) in FIG. 3 indicates an operation in which the terminal user performs an operation to start using the location information service. In step S31, the current location 24 is detected and displayed on the map data. The same initial screen as 2 is shown in M31. The terminal user compares the contents of the signboard and the like around the current position 24 shown on the initial screen M31 with the actual signboard that can be visually confirmed at the actual site. The current position 24 is determined to be an error. When the terminal user starts the correction operation for the current position 24, the terminal user confirms which position on the map display unit 23 the actual position of the terminal user corresponds to, and proceeds to the next correction step. First, in step S32, when the F button 21f is pressed, a selection screen for correction operation is displayed (M32). By the up / down operation of the arrow key 21e, the "1" position hand correction is selected from the correction operations, and the F button 21f Press to confirm.

  In the next step S33, a message “Please correct with an arrow key” is first displayed on the screen (M33). At the same time, the map display unit 23 operates the arrow key 21e to mark the current position 24 with ♦. Can move up, down, left and right. The terminal user confirms the position where he / she actually stands, that is, the position where the current position 24 should be moved and corrected on the screen on the map data of the map display unit 23. Here, when the arrow key 21e is operated, a new position correction pointer appears on the screen (M34) with a + mark (M34), so that the pointer is moved to the current position to be corrected by the operation of the arrow key 21e. Move (step S34). If the F button 21f is pressed as a decision operation when the pointer actually comes to the position on the map data on the screen (step S35), the display of the screen (M35) is indicated by the pointer + mark. The current position 24 that has been displayed with the mark ◆ is changed to a mark, and at the same time, the current position 24 that has been displayed with the mark ◆ is changed to the mark ◇ and displayed with the character before the correction. At this time, both the current position ◇ before correction and the current position ♦ after correction are displayed on the screen, and the positional relationship between the two represents a relative error.

  Returning to the description of FIG. 1, the corrected current position ◆ is stored as corrected current position information in the position storage unit 12, and at the same time, the control unit 13 detects detected current position information (that is, current position before correction). ) And the corrected current position information (that is, the corrected current position) can be displayed, and the scale of the map data is adjusted according to the size of the map display unit 23. This adjustment is performed by selecting, acquiring, and displaying an appropriate scale from a plurality of scales of peripheral map data that can be acquired by the map data acquisition unit 14, and displaying map data of a certain scale that has already been acquired. This is realized by any one or a combination of the method of changing the size and displaying.

  The correction operation of the current position has been described above. Next, an embodiment of the position display before and after the correction of the current position information after the correction will be described.

  The position storage unit 12 in FIG. 1 also calculates and stores the detected current position information, the corrected current position information, and the relative error information thereof during the correction operation. Alternatively, a method is also possible in which relative error information is first obtained as a correction value, and corrected current position information is calculated from the correction value and detected current position information and stored. These can be easily handled in the current position display device 1 by using numerical values of latitude and longitude as parameters. When the terminal user confirms his current position in the shopping street in front of Asagaya Station, corrects the current position on the terminal and walks again toward the purpose, the detected current position information is While being updated, it is displayed on the map display unit 23 as a position before correction, and at the same time, the current position after correction is continuously displayed at a position that maintains the same relative error as the position before correction.

  FIG. 4 shows a display example of the map display unit 23 when walking for a fixed time after performing the correction operation of the current position. Here, the pre-correction position and the current position are displayed with the same relative error as at the time of correction, and the displayed map moves on the map display unit 23 as the detected current position information changes with walking movement.

FIG. 4A shows a case where the displayed current position ◆ matches the position where the pedestrian actually stands even after walking for a fixed time. This indicates that the detected current position information indicates a state in which the initial error is maintained even after a lapse of a certain time, and the same is also assumed after that for a certain time.
FIG. 4 (b) shows the displayed current position ◆ on the building and the actual position where the pedestrian stands (shown with a + sign) due to the occurrence of re-error after walking for a certain time. It shows a state that is within the range of the current position ◆ and the position before correction ◇. This case shows that the error of the detected current position information tends to be reduced with time than the initial error, and the accuracy of the position information service being used is reliable for the pedestrian.
In (c) of FIG. 4, the displayed current position ◆ is located on the building due to the occurrence of re-error after walking for a certain time, and the position where the pedestrian actually stands (illustrated by + sign) is displayed. The case where the current position ◆ and the position before correction ◇ are out of the range is shown. This represents a tendency for the error of the detected current position information to increase from the beginning due to changes in the location information service usage environment such as the reception status of GPS satellites. As a terminal user, whether to stop using the location information service Or whether to correct the current position again is necessary.
As described above, the user can grasp the more accurate current position from the information of the displayed current position ◆, the position before correction ◇, and his / her position + after a predetermined time has elapsed.

  As described above, in the location information service, it is realistically assumed that the detected current location information causes a re-error over time and the reliability of the corrected location information becomes low according to the change of the usage environment. . Considering that the standard walking time of the user is also within a certain range, provide a mechanism that can automatically terminate the position correction function or the entire location information service after a certain period of time has elapsed after correcting the current position. This is one of the features of the present invention. The embodiment will be described with reference to FIG.

FIG. 5 shows a time chart from the time when the current position of the detected current position information is corrected (step S35 in FIG. 3). The predetermined time is described as an example of 30 minutes in FIG. The time point at which the determination button is selected in step S35 in FIG. 3 corresponds to 0 minute in the “time flow” represented by the horizontal axis in FIG. 5, and the position correction operation is performed below the time axis. The state displayed on the map display unit 23 is shown. Here, “correction position display” indicates a state in which the current position ◆ is displayed on the screen together with the pre-correction position ◇ after the correction operation.
In FIG. 5, the correction position is displayed on the screen simultaneously with the position correction operation (0 minutes). Thereafter, the error with time of the position information belongs to one of the cases described with reference to FIG. When the predetermined time (30 minutes) has elapsed, the correction position display automatically disappears, and at the same time, the position before correction ◇ returns to the display of the current position ◆, that is, returns to the state of M31 in FIG. Causes the entire information service to terminate. The predetermined time can be set by selecting [2] display setting in steps S32 and M32 of FIG. 3, and selecting / determining 30 minutes or another time (not shown).

  At the time when a predetermined time (30 minutes) has elapsed since the position correction operation, the terminal user has already arrived at the destination or the reliability of the position information is reduced and does not depend on the position information service. However, it is assumed that the terminal user forgets to terminate the location information service. The automatic end of the position display as described above has the effect of preventing the battery consumption of the mobile terminal in addition to the purpose of ending the display operation that is no longer useful on the mobile terminal.

  The embodiment described above is an exemplification, and differs depending on the specifications of the actually used terminal, the contents of the location information service, and other factors, and does not limit the requirements of the invention described in the claims. Absent.

  In the present invention, a more accurate position can be grasped at a lower cost than a correction means such as an inertial sensor. Also, for example, even if the landmark around the destination cannot be confirmed during walking at night, the terminal user first corrected the current position at the shopping street entrance in front of Asagaya Station and walked to the exit of the shopping street. If the error of the correction position is confirmed at the time, the current position ◆ displayed on the map display section 23 and the position before correction ◇, And it is possible to go to the destination while grasping the confirmed error information.

It is the figure which showed the example of the whole structure of embodiment of this invention. It is the figure which showed the example of the position display screen in embodiment of this invention. It is a figure explaining the example of the procedure of correction operation of a present position, and the transition of the screen displayed on embodiment of this invention. It is the figure which showed the example of a display of the screen after the position correction in embodiment of this invention. In embodiment of this invention, it is the figure which showed the time chart of the example which makes correction position display effective for predetermined time.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Present position display apparatus 11 Position detection part 12 Position memory | storage part 13 Control part 14 Map data acquisition part 15 Operation part 16 Display part 17 Reception part 21 Function button 22 Task display part 23 Map display part 24 Current position

Claims (7)

A receiving unit that receives positioning information; a position detecting unit that detects a current position of a terminal user based on the received positioning information; a map data acquiring unit that acquires map data around the current position; and the current An operation unit capable of inputting arbitrary position information different from the position, a position storage unit that stores a plurality of position information, and a control unit that performs control for displaying the position information and the surrounding map data on a screen; A display unit for displaying information of the control unit on a screen;
A current position display method for displaying position information of the terminal user using a user terminal comprising:
The position storage unit
Detection current position information detected by the position detection unit, correction current position information input to the operation unit, and relative error information calculated from the detection current position information and the correction current position information. Remember,
The controller is
One or both of the detected current position information and the corrected current position information are displayed at the same time. A receiving unit that receives positioning information; a position detecting unit that detects a current position of a terminal user based on the received positioning information; a map data acquiring unit that acquires map data around the current position; and the current An operation unit capable of inputting a position correction value; a position storage unit that stores a plurality of pieces of position information; a control unit that performs control for displaying the position information and the surrounding map data on a screen; and the control A display for displaying the information of the part on the screen;
A current position display method for displaying position information of the terminal user using a user terminal comprising:
The position storage unit
Stores detected current position information detected by the position detection unit, correction value information input to the operation unit, and corrected current position information calculated from the detected current position information and correction value information. ,
The controller is
One or both of the detected current position information and the corrected current position information are displayed at the same time.   3. The current position display according to claim 1, wherein the control unit continuously controls display of both the detected current position information and the corrected current position information for a predetermined time. Method.   The control unit controls the display scale of the surrounding map data according to the size of the display unit when displaying both the detected current position information and the corrected current position information on the display unit. The present position display method according to any one of claims 1 to 3, wherein: A receiving unit that receives positioning information; a position detecting unit that detects a current position of a terminal user based on the received positioning information; a map data acquiring unit that acquires map data around the current position; and the current An operation unit capable of inputting arbitrary position information different from the position, a position storage unit that stores a plurality of position information, and a control unit that performs control for displaying the position information and the surrounding map data on a screen A display unit for displaying information on the control unit on a screen;
A current position display device comprising:
The position storage unit
Detection current position information detected by the position detection unit, correction current position information input to the operation unit, and relative error information calculated from the detection current position information and the correction current position information And remember
The controller is
One or both of the detected current position information and the corrected current position information are displayed at the same time. A receiving unit that receives positioning information; a position detecting unit that detects a current position of a terminal user based on the received positioning information; a map data acquiring unit that acquires map data around the current position; and the current An operation unit capable of inputting a position correction value; a position storage unit that stores a plurality of pieces of position information; a control unit that performs control for displaying the position information and the surrounding map data on a screen; and the control A display for displaying the information of the part on the screen;
A current position display device comprising:
The position storage unit
Stores detected current position information detected by the position detection unit, correction value information input to the operation unit, and corrected current position information calculated from the detected current position information and the correction value information. And
The controller is
One or both of the detected current position information and the corrected current position information are displayed at the same time.   The control unit controls the display scale of the surrounding map data according to the size of the display unit when displaying both the detected current position information and the corrected current position information on the display unit. The present position display apparatus according to claim 5 or 6, characterized in that:

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