JP2004003896A - Map display system in mobile radio terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system for providing map information having a display reduced-scale which is easier to be utilized by a user corresponding to the kind of the location concerning a requested location when displaying a map corresponding to the own position of the mobile radio terminal user. <P>SOLUTION: Information on the utilization state of the position spot and map data having a reduced scale corresponding to the utilization state are retained correlatively with position data in a map information database for transmitting the map data around the position of own position information of the mobile radio terminal to the mobile radio terminal. The display reduced-scale of the map to be displayed first by the mobile radio terminal is determined based on information on the kind of the place of the own position. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a map display system for a mobile wireless terminal, and more particularly to a map display system for a mobile wireless terminal that displays map data received from a map information database to which the mobile wireless terminal is connected on its own screen. About.
[0002]
More specifically, the present invention provides a map for displaying a map of its own position (including surroundings) on a screen of a mobile wireless terminal such as a mobile phone, based on information on the own location of the mobile wireless terminal such as a mobile phone. In the display system, what kind of location is the self-position (location of the mobile wireless terminal such as the mobile phone which has requested the map display) of the mobile wireless terminal such as the mobile phone (topography, land use status, etc.) This is a map display system that aims to improve user convenience and reduce the number of times data is transmitted and received by changing the display scale of the map at the time of initial display.
[0003]
[Prior art]
2. Description of the Related Art In recent years, mobile wireless terminals such as mobile phones have become widespread, and a function of specifying a position of a mobile wireless terminal such as a mobile phone using a GPS (global positioning system) or a mobile phone base station has been developed. Mobile radio terminals. For this reason, the user specifies the position using a mobile wireless terminal such as a mobile phone, obtains the map of the position and its surroundings from a wirelessly connected map information database, and obtains the location of the mobile wireless terminal such as a mobile phone. It is thought that the opportunity to display and use the information on the screen will further increase.
[0004]
Japanese Patent Application Laid-Open No. H11-224047 (“Map Information Providing Method and Terminal Apparatus Used therein”) and Japanese Patent Application Laid-Open No. 2001-82965 (“Map Display System and Map Display”) relate to this type of conventional map information providing system. And a computer-readable recording medium recording a map display program ").
[0005]
According to the technology disclosed in Japanese Patent Application Laid-Open No. H11-224047, in a system in which a base station provides a plurality of types of map information to a terminal capable of moving within a service area using a broadcast channel, a terminal device includes an external device. The map information corresponding to the area and the scale of the necessary map information is identified based on the input from, and only the necessary map information is stored. This reduces the capacity of the storage device.
[0006]
In the technique disclosed in Japanese Patent Application Laid-Open No. 2001-82965, first, a user designates and operates a target position in a wide area map including a current position, and a detailed map including the target position and details of a peripheral area of the detailed map. The map is obtained from the map server.
[0007]
By the way, in a conventional map display system that displays a map on the screen of a mobile wireless terminal such as a mobile phone, the user is not conscious of what kind of place the map is requested to be displayed. In general, the map is initially displayed on a fixed scale even at a place. The user enlarges or reduces the map according to the purpose of use after the initial display and uses the map, or receives and displays map data of different scales from the map information database.
[0008]
However, it is not possible for the user to initially display at the same scale the place where surrounding target buildings are scattered like mountainous areas and the place where surrounding target buildings are dense such as city area It is not efficient when considering the use of.
[0009]
In places such as mountainous areas, it is easier for the user to display a map of a wide range so that the target buildings around can be confirmed to some extent, and in places such as urban areas, the surrounding individual goals are recognized to some extent It is easier for users to view maps that are as narrow as possible.
[0010]
[Problems to be solved by the invention]
Therefore, the present invention has been made in view of the above situation, and when displaying a map corresponding to the information of the identified self-position of the mobile wireless terminal user, what kind of place is the requested place An object of the present invention is to realize a system that provides information on a map at a display scale that is more easily used by a user by utilizing such information.
[0011]
[Means for Solving the Problems]
According to the first aspect of the present invention, the mobile radio terminal transmits the self-position information to the map information database of the line connection destination, and the map information database receives the map data around the position of the self-position information received by the mobile radio terminal. A map display system for a mobile wireless terminal that transmits to a terminal and displays the map data received by the mobile wireless terminal on its own screen, wherein the map information database is associated with position data. Information on the use status of the location point, and at least map data of a scale corresponding to the use status are held, and based on the information on what kind of place the position is, the screen of the mobile wireless terminal is displayed. The display scale of the map to be displayed first is determined.
[0012]
According to a second aspect of the present invention, the mobile radio terminal transmits the self-position information to the map information database of the line connection destination, and the map data around the position of the self-position information received by the map information database is transmitted to the mobile radio terminal. A map display system for a mobile wireless terminal that transmits to a terminal and displays the map data received by the mobile wireless terminal on its own screen, wherein the map information database is associated with position data. Information about the use status of the location point, and at least map data of a scale corresponding to the use status, and in response to a request from the mobile radio terminal, the self-position data of the requesting mobile radio terminal. The map data of the corresponding display scale is transmitted to the mobile wireless terminal.
[0013]
According to a third aspect of the present invention, the mobile wireless terminal transmits its own position information to a map information database of a line connection destination, and the map information database receives map data around the position of the position information received by the mobile wireless terminal. A map display system for the mobile radio terminal, wherein the map information database is transmitted from the mobile radio terminal. Information relating to the usage status of the location point in association with the location data being requested, and in response to a request from the mobile radio terminal, usage status information and a map corresponding to the location data of the requesting mobile radio terminal. And transmitting the received map data to the screen of the mobile terminal first at a display scale corresponding to the use status information received by the mobile wireless terminal.
[0014]
In each of the above inventions, the map information database holds information on the usage status of the location in association with the location data, and at least map data on a reduced scale according to the usage status. Since the display scale of the map initially displayed on the screen of the mobile wireless terminal is determined based on the information on whether there is, it is possible to provide map information with high user convenience in the initial display. . Therefore, it is possible to improve the operability by eliminating an unnecessary display scale change operation, and to reduce the number of data transmission / reception.
[0015]
According to a fourth aspect of the present invention, in the map display system of the mobile wireless terminal according to any one of the first to third aspects, the use status is classified according to whether the position is an urban area or not. It is characterized by having. According to a fifth aspect of the present invention, in the map display system of the mobile wireless terminal according to any one of the first to fourth aspects, the mobile wireless terminal uses a GPS position detecting device as its own position detecting means. And transmitting the detected self-position to the map information database as the self-position information. According to a sixth aspect of the present invention, in the map display system for a mobile wireless terminal according to any one of the first to fifth aspects, the mobile wireless terminal is a mobile phone.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
According to the system of the present invention, when a map of a self-position (including a surrounding area) based on self-position information is requested from a mobile wireless terminal such as a mobile phone to a map information database connected by a wireless line. In the map information database, a mobile radio such as a mobile phone which has been requested based on information on ranges classified based on registered terrain and land use conditions and information on a display scale corresponding to each range. It finds a range in which the terminal's own position is applicable, obtains information on the display scale corresponding to the range, transmits a map of the display scale according to the information to a mobile wireless terminal such as a mobile phone, and displays the screen. To be displayed.
[0017]
Alternatively, according to the system of the present invention, when a mobile wireless terminal such as a mobile phone obtains a map of its own position (including its surroundings) based on information of its own position, a database connected via a wireless line is requested. The database finds the use information of the range classified based on the registered terrain and land use status, and the range to which the self-position of the mobile radio terminal such as the requested mobile phone falls. Transmitting the use information of the point corresponding to the self-position of the mobile radio terminal and a map corresponding to the range to a mobile radio terminal such as a mobile phone, and the mobile radio terminal receives the received map, The display scale is converted according to the usage information of the point and displayed on the own screen.
[0018]
As described above, in the system according to the present invention, the display scale for displaying the map of the self-position (including the periphery) of the mobile wireless terminal such as the mobile phone on the screen of the mobile wireless terminal such as the mobile phone is determined. Information on the location of mobile radio terminals such as mobile phones, information on ranges classified based on terrain and land use status registered in the database, and display scales corresponding to each range. It is characterized by utilizing the map information of (1).
[0019]
[Embodiments] The present invention will be described in detail below with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a map display system according to one embodiment of the present invention. Referring to FIG. 1, a system according to the present embodiment includes a mobile phone 100 as a mobile wireless terminal, a mobile phone base station 120, a GPS satellite 130, an Internet 140 as an external communication network, and a map information database connected to the Internet 140. As a WWW server 200.
[0020]
The WWW server 200 includes a map database 210, an information database 220, and an information processing unit 230, in addition to the communication unit 240 and other known components as server devices. The map database 210 has a plurality of types (several types with different scales) of map data 211 managed by latitude and longitude.
[0021]
The information database 220 displays a screen of the mobile phone 100 linked with information on land use range (latitude / longitude) classified based on land use status such as a topographic map, a terrain map, and a land use map. A display scale information (table) 221 storing information on a display scale when displaying a map is provided. The usage status is classified according to, for example, whether the position is an urban area or not and associated with the display scale. The city area may be further classified and classified, and may be associated with a subdivided display scale suitable for each. Points other than the city area may be further classified based on other parameters and associated with the subdivided display scale.
[0022]
The information database 220 further includes used map information (table) 222 that stores information on map data used when displaying a map on the screen of the mobile phone 100 linked to the range of the display scale. FIG. 2 schematically shows such information. The image of the display scale information 221 is 300, its content example is 301, the image of the used map information 222 is 400, and its content example is 401.
[0023]
The information processing section 230 converts the display scale information from the display scale information 221 of the information database 220 based on the self-position information included in the request to acquire map information from the mobile phone 100 input via the communication means 240. Means for acquiring information on map data to be used from the used map information 222 of the information database 220 based on the information on the display scale, information on the self-position from the mobile phone 100 and its display Means for acquiring (selecting) map data (map information) necessary for display on the screen of the mobile phone 100 from the map data 211 of the map database 210 based on the information of the scale and the information of the map data to be used. I have. The acquired map data is transmitted to the mobile phone 100 via the communication means 240.
[0024]
The mobile phone 100 will be described. FIG. 3 is a block diagram illustrating a schematic configuration of the mobile phone 100 used in the example system. The mobile phone (mobile radio terminal) 100 is configured to be used for normal telephone calls and data communication such as an antenna 102, a radio transmitting / receiving unit 103, a signal processing circuit 104, a speaker 105, a microphone 106, a display unit 107, and operation keys 108. Is provided. The mobile phone 100 further includes a GPS antenna 109 and a GPS receiving unit 110. Each component operates under the control of a control unit 101 including a CPU and the like. The control unit 101 is connected to a system memory 111, a telephone number memory 112, and a map data memory 113.
[0025]
The display unit 107 is generally a liquid crystal display device, and the operation keys 108 include numeric keys and other function keys. Some of the numeric keys also serve as scroll keys for scrolling display information on the display screen up, down, left, and right when switching functions. The display unit 107 and the operation keys 108 are usually provided on a front panel or the like. The system memory 111 stores programs for executing various functions of the mobile phone device 100 in advance. The system memory is also used as a work memory used for temporarily storing data in various processes and an area (map data memory) for storing map data.
[0026]
The voice signal of the call is processed by the antenna 102, the wireless transmission / reception unit 103, and the signal processing unit 104. A transmission radio wave from another mobile phone device is received by the antenna 102 and demodulated by the wireless transmission / reception unit 103 to generate a reception signal. The received signal is subjected to signal processing for reproduction in the signal processing unit 104, and is reproduced as sound from the speaker 105. On the other hand, the conversation of the speaker is input to the microphone 106 and converted into an audio signal. This audio signal is subjected to signal processing for transmission in the signal processing unit 104, and is sent to the wireless transmission / reception unit 103. The wireless transmission / reception unit 103 modulates the audio signal from the signal processing unit 104 and supplies the modulated signal to the antenna 102, and the antenna 102 transmits the audio signal as a radio wave.
[0027]
The mobile phone (mobile radio terminal) 100 according to the embodiment has a self-position detecting function for measuring its own position using a mobile phone base station 120 or a GPS satellite 130 in addition to a call function, and a communication means, that is, a WWW server. A function of transmitting information on the measured self-position to the WWW server 200, a means for transmitting a request for obtaining map information to the WWW server 200, a function of receiving the map information transmitted from the WWW server 200, and the received map information Is displayed on the screen of the mobile phone 100. That is, the GPS antenna 109 receives radio waves from a plurality of satellites and supplies received signals to the GPS receiving unit 110. The GPS receiving unit 110 obtains the current position of the mobile phone device 100 using a plurality of radio waves and supplies the current position data to the control unit 101. This current position data is usually latitude and longitude data. The details of the self-position detection function (means) for measuring the self-position using the mobile phone base station 120, the GPS satellite 130, and the like are not directly related to the present invention, and thus the detailed configuration is omitted.
[0028]
The mobile phone base station 120, the GPS satellites 130, the Internet 140, the connection method between the mobile phone 100 and the Internet 140, and the connection method between the Internet 140 and the WWW server 200 in this embodiment are well known to those skilled in the art. Is not directly related, so the detailed configuration is omitted.
[0029]
Next, the operation of the present embodiment will be described with reference to FIGS. In displaying the map of the self-position (including the surroundings) obtained by the self-position detection means on the screen of the mobile phone 100, the mobile phone 100 transmits a request for obtaining the self-location information and the map information to the WWW server 200. . These signals are received by the WWW server 200 via the mobile phone base station 120 and the Internet 140.
[0030]
In the WWW server 200, upon receiving the request of acquiring the information of the self-position and the map information from the mobile phone 100, the information processing unit 230 firstly displays the display scale of the information database 220 based on the information of the self-position. From the information 221, information on the display scale linked to the information on the range of the land use to which the information on the self-position is applicable is acquired. This process will be described with reference to 301 of FIG. 2 which is an example of the contents of the display scale information 221. When the information of the self-position from the mobile phone 100 corresponds to the information on the range of land use in the contents example 301, the display scale is reduced. "1/15000" is obtained as information.
[0031]
Next, based on the acquired display scale information, the information processing section 230 uses the map to be used linked from the use map information 222 of the information database 220 to the information of the display scale range to which the display scale information corresponds. Get data information. This process will be described with reference to 401 in FIG. 2 which is an example of the contents of the used map information 222. If the information of the display scale is “1/15000”, it is the information of the display scale range “1/7500 to 1”. / 20000 ", so" map data of 1/14000 scale "is acquired as information of the map data to be used.
[0032]
Next, the information processing unit 230 selects the map data to be used from the map data 211 of the map database 210 based on the obtained information of the map data to be used, and obtains the information of the self-position from the mobile phone 100. Based on the information on the display scale, map information in a range necessary for display on the screen of the mobile phone 100 is acquired from the map data used by the map data 211 of the map database 210. Finally, the acquired map information is transmitted to the mobile phone 100.
[0033]
When the mobile phone 100 receives map information in a range necessary for display on the screen of the mobile phone 100 from the WWW server 200, the map information is displayed on the screen. The displayed map is a map of a display scale suitable for the current position of the mobile phone 100, and in many cases, the user can fulfill the purpose with the first displayed map. Therefore, there is no need to repeat the operation until a map of a required display scale is obtained as in the related art, which eliminates complexity and improves operability. Further, since there is no need to receive retransmission, it also contributes to a reduction in communication cost. In addition, since information of a range for determining a display scale when displaying a map on a screen of a mobile wireless terminal such as a mobile phone is managed in a map information database, processing such as registration, correction, and deletion of the information can be performed. Easy to do.
[0034]
As described above, according to the present embodiment, the information of the range divided based on the terrain and land use status registered in the map information database and the self-position of the mobile wireless terminal such as a mobile phone are described. Based on the information, the display scale for displaying the map on the screen of a mobile wireless terminal such as a mobile phone is determined, so that information that is highly convenient for the user can be provided at the initial display stage, and unnecessary display is possible. The operation of changing the scale is not required, the operability is improved, and the number of data transmission / reception can be reduced.
[0035]
Note that the system of the present embodiment centrally manages information for determining the location of a mobile wireless terminal such as a mobile phone requesting the display of a map in a database. There is an advantage that processing such as registration, correction, and deletion of information can be easily performed.
[0036]
In the above-described embodiment, the image data of an appropriate display scale is determined in the map information database, and this image data is transmitted to the mobile wireless terminal (mobile phone). The map data and the use information (or corresponding display scale information) are transmitted to the mobile wireless terminal, and the mobile wireless terminal converts the received map data into a display scale based on the use information or the display scale information and displays the converted map data. The embodiment may be configured so that the same effect as in the above-described embodiment can be obtained. In this case, the mobile wireless terminal is provided with an image data conversion (reduction) function.
[0037]
In the above-described embodiment, the system using the mobile phone has been described. However, the present invention is not limited to this, and the terminal that displays the map data is not limited thereto, and may be a mobile wireless terminal such as a PDA (Personal Digital Assistant) having a communication function. There may be. The combination of a mobile computer and a wireless communication terminal is also included in the mobile wireless terminal according to the present invention. In addition, the present invention is not limited to the embodiments and can be implemented in various modifications.
[0038]
【The invention's effect】
According to the present invention, a mobile phone or the like is used based on information of a range classified based on the terrain or land use status registered in the database and information on a self-position of a mobile wireless terminal such as a mobile phone. Since the display scale for displaying the map on the screen of the mobile wireless terminal is determined, it is possible to provide user-friendly map information at the initial display stage, and to perform unnecessary display scale changing operations. The operability can be improved by eliminating the data, and the number of data transmission / reception can be reduced. In addition, since information on a range for determining a display scale when displaying a map on a screen of a mobile wireless terminal such as a mobile phone is managed in a database, processing such as registration, correction, and deletion of the information can be easily performed. I can do it.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a schematic configuration of a map display system according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram schematically showing display scale information and use map information stored in an information database according to the present invention.
FIG. 3 is a block diagram illustrating a schematic configuration of a mobile phone used in the embodiment system.
[Explanation of symbols]
100: Mobile phone (mobile radio terminal)
101 control unit 102 antenna 103 wireless transmission / reception unit 104 signal processing circuit 105 speaker 106 microphone 107 display unit 108 operation keys 109 GPS antenna 110 GPS reception unit 111 system memory 112 telephone number memory 113 ... Map data memory 120 ... Mobile phone base station 130 ... GPS satellite 140 ... Internet 200 ... WWW server 210 ... Map database 211 ... Map data 220 ... Information database 221 ... Display scale information 222 ... Used map information 230 ... Information processing unit 240 ... Communication means

Claims (6)

The mobile wireless terminal transmits its own position information to the map information database of the line connection destination, and the map information database transmits map data around the position of the received self-position information to the mobile wireless terminal, A map display system for a mobile wireless terminal, wherein the map data received by the wireless terminal is displayed on its own screen,
The map information database holds information on the usage status of the location in association with the location data, and at least map data on a scale corresponding to the usage status,
A map display system for a mobile wireless terminal, wherein a display scale of a map to be first displayed on a screen of the mobile wireless terminal is determined based on information about the location of the location. The mobile wireless terminal transmits its own position information to the map information database of the line connection destination, and the map information database transmits map data around the position of the received self-position information to the mobile wireless terminal, A map display system for a mobile wireless terminal, wherein the map data received by the wireless terminal is displayed on its own screen,
The map information database holds information on the usage status of the location in association with the location data, and at least map data on a scale corresponding to the usage status,
In response to a request from the mobile wireless terminal, the mobile wireless terminal characterized by transmitting map data of a display scale corresponding to the self-position data of the requesting mobile wireless terminal to the mobile wireless terminal. Map display system. The mobile wireless terminal transmits its own position information to the map information database of the line connection destination, and the map information database transmits map data around the position of the received position information to the mobile wireless terminal. A map display system for a mobile wireless terminal, wherein the map data received by the terminal is displayed on its own screen,
The map information database holds information on the use status of the location point in association with the location data sent from the mobile wireless terminal,
In response to a request from the mobile wireless terminal, transmitting usage status information and map data according to the position data of the requesting mobile wireless terminal,
A map display system for a mobile wireless terminal, wherein received map data is first displayed on its own screen at a display scale corresponding to the use status information received by the mobile wireless terminal. The map display system according to any one of claims 1 to 3, wherein the usage status is classified according to whether the location is an urban area. 5. The mobile radio terminal according to claim 1, further comprising a GPS position detecting device as a self-position detecting means, and transmitting the detected self-position to the map information database as the self-position information. 2. The map display system for a mobile wireless terminal according to claim 1. The map display system for a mobile wireless terminal according to claim 1, wherein the mobile wireless terminal is a mobile phone.

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