JP5516652B2 - Portable display device and program - Google Patents

Description

The present invention relates to a portable display device having a display screen and a program.

  In recent years, mobile personal computers equipped with data communication functions and the like, PDAs (Personal Digital Assistants), and portable information terminals such as mobile phones are rapidly spreading. As a portable information terminal using a data communication function, a portable information terminal that displays a map centered on the current position has been developed (for example, see Patent Document 1). Such a portable information terminal has a built-in GPS receiver, downloads a map image including the current position obtained by the GPS receiver from an external map database server, and displays the downloaded map image. It is configured.

JP 2001-159537 A

  However, in a conventional portable information terminal, when a user has a portable information terminal and is in a building, even if the user displays a map image on the portable information terminal, what floor of the building is there Cannot be grasped from the portable information terminal.

The present invention is to be able to immediately confirm the highly based information of the current position.

The invention according to claim 1 is a portable display device having a display screen, wherein the position acquisition means for acquiring GPS position information of latitude, longitude, and altitude of the current position by receiving information by GPS positioning, and the position From the latitude / longitude information in the GPS position information of the current position acquired by the acquisition means, refer to the database that stores the altitude data at sea level at the latitude / longitude and the sea level altitude data at the ground surface at multiple latitudes / longitudes The altitude data of both the sea level acquisition means acquired by the sea level, the sea level altitude data acquired by the sea level acquisition means, and the positioning altitude data in the GPS position information of the current position acquired by the position acquisition means. Processing control means for executing predetermined processing based on the display information processed by the processing control means as display information based on the altitude of the current position. Characterized by comprising display control means for displaying on the screen, the.

According to the present invention, it is possible to allow immediate sure highly based information of the current position.

It is the block diagram which showed the structure of the map display system to which this invention was applied. It is the block diagram which showed the structure of the map display system (map information provision server) shown by FIG. It is the block diagram which showed the structure of the mobile telephone shown by FIG. It is drawing which showed the data structure of the floor height data table shown by FIG. It is the flowchart which showed the flow of the process which the said mobile telephone performs. It is the flowchart which showed the flow of the process which the said map information provision server performs. 6 is a flowchart showing a continuation of the process of FIG. 4 is a diagram illustrating a display screen of the mobile phone. It is the sectional side view which showed the building in 2nd embodiment. It is the block diagram which showed the structure of the mobile telephone in 2nd embodiment.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing. However, although various technically preferable limitations for implementing the present invention are given to the embodiments described below, the scope of the invention is not limited to the following embodiments and illustrated examples.

[First embodiment]
FIG. 1 is a block diagram showing a configuration of an information providing system 1 (map display system) according to the first embodiment of the present invention.
The map information providing service system 2 (server) is composed of a map information DB (database) 26 and a map information providing service server 200. When the position information (address or latitude / longitude) is received via the network 4, the map information providing service system 2 (server) Map information of a predetermined scale centered on the location indicated by the information is provided to the mobile phone 3 (mobile device).

  The network 4 includes various communication lines such as a telephone line network, an ISDN line network, a dedicated line, a mobile communication network, a communication satellite line, and a CATV line network. The network 4 may be an open network such as the Internet or a closed network such as a LAN. The network 4 only needs to be connectable at any time and does not need to be always connected. Further, the network 4 is preferably a network that secures security accessible only to a specific user from the viewpoint of reliability of information management. The communication protocol for communication between the mobile phone 3 and the map information providing service server 200 is not particularly limited, but here the communication protocol is HTTP, and the map information providing service server 200 has a function as a WWW server. The mobile phone 3 has a browser function.

  The communication service provider server 8 is a server operated by a communication service provider, and provides an Internet connection service in response to an access request from the mobile phone 3 to the network 4 via the radio base station 6 and the relay base station 7. provide. In particular, in this embodiment, the communication service provider server 8 controls information exchange between the mobile phone 3 and the map information providing service server 200 described above. Further, the mobile phone 3 has a GPS function for acquiring its own position information (latitude and longitude) by receiving information from the artificial satellite 5 and information from the surrounding radio base stations 6 by radio signals.

  Next, the map information providing service system 2 will be described with reference to FIG. FIG. 2 is a functional block diagram of the configuration centering on the map information providing service server 200. As shown in FIG. 2, the map information providing service server 200 includes a CPU 21, a RAM 22, an input unit 23, a communication control unit 24, a program storage unit 25, a map information DB 26, a display unit 27, and these. And a bus 28 connected so as to be able to input and output data.

The program storage unit 25 has a storage medium in which a system program is stored in advance, and this storage medium is composed of a magnetic storage medium, an optical storage medium, or a semiconductor memory. The system program stored in the storage medium of the program storage unit 25 is a program that can be executed by the CPU 21. Note that a part or all of the system program stored in the program storage unit 25 may be received and stored by the communication control unit 24 from another computer.
The CPU 21 is configured to read and execute a system program from the program storage unit 25 and control the drive of the entire server.
The RAM 22 provides a work area to the CPU 21 and is configured to temporarily store data generated by processing executed by the CPU 21 in accordance with the system program, data read by the CPU 21, and the like.

The input unit 23 includes a keyboard having cursor keys, character / number input keys, and various function keys. The input unit 23 is configured to output signals corresponding to the keys operated on the keyboard to the CPU 21 through the bus 28. Has been. The input unit 23 may include a pointing device such as a mouse and a touch panel, and other input devices as necessary.
The display unit 27 is a cathode ray tube display device, a liquid crystal display device, or other display devices, and is configured to perform display according to a display signal input from the CPU 21 through the bus 28.
The communication control unit 24 is configured to send and receive data to and from the network 4 according to instructions from the CPU 21.

  The map information DB 26 includes a storage medium, and the storage medium includes a magnetic storage medium, an optical storage medium, or a semiconductor memory. The map information DB 26 functions as sea level data storage means, and the map database 26a and the sea level database 26b are stored in advance in the storage medium of the map information DB 26. The map database 26a and the sea level database 26b are readable by the CPU 21.

The map database 26a is an image in which a plurality of layers defined by latitude and longitude are overlapped at the same latitude and longitude. For example, the first layer includes terrain (for example, river, land, lake, sea, coastline). The image is specified by latitude and longitude, the image of transportation (for example, roads, railroads) is specified by latitude and longitude in the second layer, and the object (for example, building, store, nameplate name) is specified in the third layer , Schools, parks) are defined by latitude and longitude.
The sea level database 26b includes sea level data defined by latitude and longitude. The sea level data represents the height of the ground surface based on the average sea level at a certain latitude and longitude.
The CPU 21 functions as a sea level data search means according to the system program of the program storage unit 25, and the CPU 21 is provided to search the sea level database 26 b for sea level data corresponding to the latitude and longitude of the mobile phone 3 received by the communication control unit 24. Yes.

  Next, the functional configuration of the mobile phone 3 will be described in detail. FIG. 3 is a block diagram showing the configuration of the mobile phone 3. In the figure, the transmission / reception unit 36 includes a frequency conversion unit and a modem. The transmission / reception unit 36 performs frequency conversion and modulation / demodulation of radio waves in order to perform wireless communication with the wireless base station 6 via the antenna ANT1. The communication control unit 39 performs communication control based on a predetermined communication method (for example, CDMA (Code Division Multiple Access) or the like). The audio processing unit 40 performs encoding / decoding of the audio signal, converts the PCM audio signal from the communication control unit 39 into an analog audio signal by D / A conversion, and causes the speaker 41 to generate sound, while The analog audio signal input from 42 is converted into a PCM signal by A / D conversion and sent to the communication control unit 39. The input unit 33 includes numeric keys for inputting the telephone number of the other party, a switch for performing on-hook / off-hook, a volume switch for changing sound output, and the like.

  The CPU 31 controls the entire apparatus according to a predetermined program. Specifically, the CPU 31 automatically transmits position information (location position) acquired by a position detection unit 34 described later to the map information providing service server 200 described above, while being stored in advance in a program storage unit 37 described later. The CPU 31 functions as a calculation means according to the predetermined terminal program, and the CPU 31 detects the current height detected by the position detection unit 34, the floor height H1 and the floor height H2 stored in the data storage unit 38, and the transmission / reception unit 36. The floor number is calculated from the sea level data received by the communication control unit 39.

The program storage unit 37 stores programs executed by the CPU 31 and various parameters. The RAM 32 includes a storage area for storing data generated under the control of the CPU 31 and an area such as a working area.
The data storage unit 38 includes a rewritable nonvolatile storage medium such as a flash memory. The data storage unit 38 functions as a floor storage unit, and a floor storage data table 38 a is stored in the nonvolatile storage medium of the data storage unit 38. For example, as shown in FIG. 4, the floor height data table 38 a is a data table in which the floor height H <b> 1 on the first floor and the floor height H <b> 2 on each floor above the second floor are associated with each building size (building type). The floor height data table 38a may be included in the terminal program in the program storage unit 37.

  The display unit 35 includes a liquid crystal display, and displays the operation mode, various data such as a telephone number and a call time, received map data, and the like under the control of the CPU 31. The position detector 34 is a geodetic satellite of at least about 4 (which may be less than that, but the accuracy decreases) among the geodetic satellites (NAVSTAR: currently 24 orbiting the earth) launched by the US Department of Defense. The position of the current position latitude / longitude (· altitude) information received from the GPS antenna ATN2 by receiving radio waves (1.22760G / 1.57542GHz) transmitted from the GPS base station 6 and correction information transmitted from the surrounding radio base station 6 Get information.

  Next, operations of the map information providing service system 2 and the mobile phone 3 will be described with reference to FIGS. Here, FIG. 5 and FIG. 7 are diagrams showing a flow of processing executed by the CPU 31 of the mobile phone 3 in accordance with the terminal program stored in the program storage unit 37. FIG. 6 is a diagram showing a flow of processing executed by the CPU 21 of the map information providing service server 200 according to the system program stored in the program storage unit 25.

  First, the CPU 31 of the mobile phone 3 performs sea level data and map image acquisition processing shown in FIG. This process is executed by the user measuring his / her current position using the mobile phone 3. That is, in the standby state of the mobile phone 3, the CPU 31 determines whether or not the input unit 33 has been operated (step S <b> 1), and when the user operates the input unit 33 and inputs that the mode is shifted to the GPS mode, the CPU 31. Is detected and input from the input unit 33 (step S1: Yes), and the GPS mode menu is displayed on the display unit 35 (step S2).

  The mobile phone 3 is in a standby state with the GPS mode menu displayed on the display unit 35, and the CPU 31 determines whether or not the input unit 33 has been operated (step S3). When the user operates the input unit 33 according to the GPS mode menu screen and inputs that the current position is to be acquired, the CPU 31 detects that (step S3: Yes). Then, the CPU 31 controls the position detection unit 34 to acquire the current latitude / longitude / height by the position detection unit 34 (step S4... Acquisition means, height detection means), and the current latitude / longitude / height. Is temporarily stored in the working area area of the RAM 32. Next, the CPU 31 displays the acquired current latitude / longitude / height on the display unit 35 (step S5).

  The mobile phone 3 is in a standby state with the current latitude / longitude / height displayed on the display unit 35, and the CPU 31 determines whether or not the input unit 33 has been operated (step S6). When the user operates the input unit 33 according to the display screen and inputs that the current position is transmitted by connecting to the map information providing service server 200 via the network 4, the CPU 31 detects this from the input unit 33 ( (Step S6: Yes), the transmission / reception unit 36 and the communication control unit 39 are controlled to transmit the current latitude / longitude / height (step S7). Next, the CPU 31 determines whether or not the map image and the sea level data are received from the map information providing service server 200 (step S8), and the reception process is continued until the map image and the sea level data are received (step S8). : No).

  On the other hand, when the communication control unit 24 receives the latitude and longitude of the current position of the mobile phone 3 from the mobile phone 3, the CPU 21 of the map information providing service server 200 performs the map image and sea level data providing process shown in FIG. Do. That is, when the CPU 21 receives the latitude / longitude transmitted from the mobile phone 3 in step S7 (step S9: Yes), each layer within a predetermined range that is substantially centered on the received latitude / longitude is read from the map database 26a. A map image is generated by superimposing the read layers and the read layers (step S10). Next, the CPU 21 searches and reads the sea level data at the received latitude and longitude from the sea level database 26b (step S11... Sea level data search means). And CPU21 controls the communication control part 24, and transmits the produced | generated map image and the read sea level data to the mobile telephone 3 by the communication control part 24 (step S12 ... sea level data transmission means). Then, the map image and sea level data provision processing is completed.

Then, in the mobile phone 3, when the CPU 31 receives the map image and the sea level data from the map information providing service server 200 by the transmission / reception unit 36 and the communication control unit 39 (step S8: Yes: reception means, sea level data reception means), The map image and the sea level data are stored in the RAM 32 (map storage means).
And the acquisition process of sea level data and a map image is complete | finished, and the map image display process shown in FIG. 7 is started. In the map image display process, first, the CPU 31 compares the received sea level data with the detected height (step S13). And CPU31 displays the menu screen for making a user select the kind of building on the display part 35 (step S14). In this menu screen, a plurality of types of buildings are displayed (for example, in the case of a data table as shown in FIG. 4, “medium-scale” and “large-scale” are displayed on the display unit 35), and the user selects You can choose from these types. While the menu screen is displayed, the CPU 31 counts a predetermined time and determines whether or not the input unit 33 has been operated by the user (steps S15 and S16).
And if a user selects one kind with the input part 33 within predetermined time, CPU31 will detect that from the input part 33 (step S15: Yes ... input means), and the 1st floor about the selected kind of building is detected. The floor height H1 and the floor height H2 of each floor above the second floor are retrieved from the floor height data table 38a and read (step S17). On the other hand, if the user does not select the type of building within the predetermined time (step S16: Yes), the CPU 31 obtains the floor height data of the floor height H1 of the first floor and the floor height H2 of each floor above the second floor for one type of default. The data is retrieved from the table 38a and read (step S18).

Next, the CPU 31 calculates the current floor number from the read floor height H1, floor height H2, the received sea level data, and the detected height (step S19). When calculating the rank, the CPU 31 calculates using the following equation (1), and uses the obtained natural number portion of N as the rank. In equation (1), H0 is the value of the received sea level data, and H4 is the detected height value.
(H4-H0-H1) / H2 + 2 = N (1)

  Next, the CPU 31 reads out the received map image from the RAM 32 (reading means), displays the read map image on the display unit 35, and displays the obtained floor number on the display unit 35 (step S20). The process according to is completed. FIG. 8 shows a screen displayed on the display unit 35. 8 (a) and 8 (b), a map image 91 is displayed on the display screen, but a star mark 92 representing the current position is synthesized and displayed at a substantially central portion of the map image 91. Yes. In the screen of FIG. 8A, “F” mark 93 (◯ is a numerical value of the obtained floor number) representing the floor number is combined around the star mark 92 by the CPU 31, and the combined image is displayed on the display unit 35. ing. On the other hand, in the screen of FIG. 8B, the “○ F” mark 93 representing the floor is arranged outside the map image 91 by the CPU 31, and the “○ F” mark 93 is displayed on the display unit 35 together with the map image 91. Has been.

The data storage unit 38 stores the floor height H1 of the first floor and the floor height H2 of each floor of two or more floors for each building scale, but each floor of one or more floors is stored for each building scale. The floor height H6 may be associated and stored. In this case, in step S19, the CPU 31 obtains N using the following equation (2), and obtains the natural number part of N as the rank.
(H4-H0) / H6 + 1 = N (2)

  As described above, according to the present embodiment, the user can display the map image including the current position on the display unit 35 of the mobile phone 3 by detecting the current position with the mobile phone 3. Here, since the floor number is displayed together with the map on the display unit 35, if the user detects the current position of the mobile phone 3 in a building such as a building, the mobile phone 3 grasps the floor number of the building. be able to.

Particularly, when the mobile phone 3 calculates the current floor number, it receives the sea level data at the current position from the map information providing service server 200 and subtracts the sea level data from the current height before calculating the floor number of the building. The floor number displayed on the display unit 35 is more accurate.
Further, when the mobile phone 3 calculates the current floor number, the building size (building type) according to the user's operation is input from the input unit 33, and the floor height H1 and floor height corresponding to the type selected by the user are input. Since the floor number of the building is calculated based on H2, the floor number displayed on the display unit 35 becomes more accurate.

[Second Embodiment]
In the first embodiment, the mobile phone 3 receives the sea level data H0 from the map information providing service server 200 (step S8), and calculates the floor number from the sea level data H0, the floor height H1, the floor height H2, and the height H4. . On the other hand, in the second embodiment, the mobile phone 3 detects the height of the first floor of the building, and calculates the floor number from the detected first floor height, floor height H1, floor height H2, and height H4. It has become.

More specifically, a radio base station 103 is installed at the entrance 102 on the first floor of the building 101 as shown in FIG. 9 so that the mobile phone 3 can detect the height of the first floor of the building. As shown, the mobile phone 3 has a second communication module 50 that can communicate with the radio base station 103.
The wireless base station 103 includes a transceiver, a control circuit, and the like, and performs wireless communication in accordance with a proximity wireless communication standard such as a Bluetooth (registered trademark) standard or an IC tag. It is configured to transmit a wireless signal for prompting measurement of the current position.
The second communication module 50 also includes a transceiver, a control circuit, and the like, and performs wireless communication in accordance with a proximity wireless communication standard such as Bluetooth (registered trademark) standard or an IC tag, and outputs the received wireless signal to the CPU 31. Is configured to do.
The mobile phone 3 is configured in the same manner as in the first embodiment except that the mobile phone 3 includes the second communication module 50. The map information providing service server 200 is configured in the same manner as in the first embodiment, but the sea level database 26b may not be stored in the data storage unit 26.

The operations of the map information providing service server 200 and the mobile phone 3 in the second embodiment will be described below. The operations characteristic of the second embodiment are mainly described, and the same processing as the processing in the first embodiment is described. Briefly described.
When a user with the mobile phone 3 enters the building 101 from the entrance 102, a radio signal is transmitted from the radio base station 103 to the mobile phone 3. When the mobile phone 3 receives a radio signal from the radio base station 103 by the second communication module 50, the radio signal is output from the second communication module 50 to the CPU 31.
As a result, the CPU 31 controls the position detection unit 34 to acquire the current position by the position detection unit 34, and temporarily stores the height of the current position in the RAM 22. Here, the height stored in the RAM 22 is the height of the first floor of the building 101, and is indicated as a height H5 below.
Thereafter, the CPU 31 of the mobile phone 3 performs the processing shown in FIG. When the user inputs the acquisition of the current position in the building 101 during the processing of the CPU 31, the CPU 31 acquires the current latitude / longitude / height by the position detection unit 34, and stores the current latitude / longitude / height in the RAM 22. Is temporarily stored (step S4). Here, the height stored in the RAM 22 is the height of the current position of the mobile phone 3, and is hereinafter referred to as a height H <b> 4.

Subsequent processing of the CPU 31 is performed in the same manner as in the first embodiment, and the CPU 31 transmits the current latitude / longitude / height to the map information providing service server 200 (step S7). In the next step S8, the reception process is continued until both the map image and the sea level data are received in the first embodiment. In the second embodiment, the reception process is performed until only the map image is received. Continue.
On the other hand, also in the map information providing service server 200, when the current latitude / longitude / height is received from the mobile phone 3, the CPU 21 performs the process of FIG. 6, but omits the process of step S11, and in step S12, the map. Are transmitted to the mobile phone 3 only.

In the mobile phone 3, when the CPU 31 receives the map image from the map information providing service server 200 by the transmitting / receiving unit 36 (step S8: Yes), the processing shown in FIG. 7 is performed as in the first embodiment. Start.
Here, in the second embodiment, the process of step S19 is omitted, and when calculating the rank in step S13, the CPU 31 obtains the rank using the following equation (3). Here, the natural number part of N is obtained as a rank.
(H4-H5-H1) / H2 + 2 = N (3)

In addition, when the floor height H6 of each floor more than one floor is matched and memorize | stored in the data storage part 38 for every scale of the building, CPU31 calculates | requires N using the following formula | equation (4) in said step S19. , N is obtained as a floor number.
(H4-H5) / H6 + 1 = N (4)
After step S13, as shown in FIG. 9, the CPU 31 displays the received map image on the display unit 35 and displays the obtained floor number on the display unit 35 (step S20).

  According to the second embodiment, the user can detect the current position by the mobile phone 3, and the floor number is displayed on the display unit 35 together with the map image including the current position. It can be grasped from the mobile phone 3. Further, when the user enters the building 101, the height H5 of the first floor is detected in advance, and the floor number of the building is calculated after the height H5 is subtracted from the current height H4. The number of floors used is more accurate.

The present invention is not limited to the above-described embodiments, and various improvements and design changes may be made without departing from the spirit of the present invention.
For example, the functions of the map information providing service server 200 may be distributed to other servers, the map database 26a is stored in a file server, the sea level database 26b is stored in another file server, and the map information providing service server 200 is You may comprise so that the map database 26a in a file server and the sea level database 26b in another file server can be read by LAN connection.
In this case, the map information providing service server 200, a device combining a LAN and two file servers corresponds to a “server”, a router is provided between the LAN and the network 4, and the map information providing service server 200 is a router. It connects with the network 4 via this.

DESCRIPTION OF SYMBOLS 1 ... Information provision system 2 ... Map information provision service system 3 ... Mobile telephone 21 ... CPU
24 ... Communication control unit

Claims (5)

A portable display device having a display screen,
Position acquisition means for acquiring GPS position information of the latitude, longitude, and altitude of the current position by receiving information by GPS positioning;
A database that stores altitude altitude data at the latitude / longitude from the latitude / longitude information in the GPS position information of the current position acquired by the position acquisition means, and altitude data at the ground surface at a plurality of latitudes / longitudes Sea level acquisition means to acquire by referring to
Process control means for executing a predetermined process based on the altitude data of both the altitude data acquired by the sea level acquisition means and the positioning altitude data in the GPS position information of the current position acquired by the position acquisition means. When,
Display control means for displaying the display information processed by the processing control means on the display screen as display information based on the altitude of the current position;
A portable display device comprising: The predetermined process executed by the process control means is a process for obtaining floor information in a building determined by a difference between the positioning altitude data and the sea level altitude data.
The portable display device according to claim 1. Map information acquisition means for acquiring map information based on latitude and longitude included in the GPS position information acquired by the position acquisition means,
The display control means displays the acquired map information on the display screen, and displays the display information in association with a display position indicating the current position in the map display.
Mobile display device according to claim 1 or 2, characterized in that. The sea level acquisition means transmits latitude / longitude information in the GPS position information to an external server via a network, and from the external server, the location at the latitude / longitude from the database stored in the external server. Obtaining the sea level altitude data of the surface by receiving it via the network,
The portable display device according to any one of claims 1 to 3 . A program for controlling a computer of a portable display device having a display screen,
The computer,
Position acquisition means for acquiring GPS position information of the latitude, longitude and altitude of the current position by receiving information by GPS positioning;
A database that stores altitude altitude data at the latitude / longitude from the latitude / longitude information in the GPS position information of the current position acquired by the position acquisition means, and altitude data at the ground surface at a plurality of latitudes / longitudes Sea level acquisition means to acquire by referring to
Process control means for executing a predetermined process based on the altitude data of both the altitude data acquired by the sea level acquisition means and the positioning altitude data in the GPS position information of the current position acquired by the position acquisition means. ,
Display control means for displaying the display information processed by the processing control means on the display screen as display information based on the altitude of the current position;
A computer-readable program designed to function as a computer.

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