JP5385357B2 - Position detection system and position detection method - Google Patents

Description

The present invention relates to a position detection system and a position detection method .

  Patent Document 1 discloses a system for confirming the position of a person carrying a transponder by receiving position information transmitted from an infrared transmitter with a transponder and transmitting the position information to an information center.

  Patent Document 2 discloses a system in which position information transmitted from an infrared transmitter is received by a mobile terminal, and an image displayed on the screen of the mobile terminal is changed based on the received position information. Specifically, as shown in FIG. 6 of Patent Document 2, a room plan is displayed in advance on the display screen of the mobile terminal, and a route from the current position to the destination is based on the received position information. Overlaid on the screen.

JP-A-1-292916 JP 2000-98034 A

  By the way, the system of Patent Document 1 does not change the screen display of the transponder based on the position information, and other display devices based on the position information received by the transponder and the operation information indicating the user's input operation to the transponder. It does not change the image displayed on (for example, a display device controlled by the information center).

  Further, the system of Patent Literature 2 changes an image displayed on a mobile terminal based on position information, but based on position information received by the mobile terminal and operation information obtained by operating the mobile terminal. It does not change the image of other display devices.

Therefore, the main object of the present invention is obtained by changing the image displayed on the mobile terminal based on the position information received by the mobile terminal and operating the position information received by the mobile terminal and the mobile terminal. It is an object to provide a position detection system and a position detection method capable of changing an image displayed on an external display device based on operation information to be displayed.

The position detection system of the present invention includes a position information transmitting device (100, 400) that transmits position information, a mobile terminal (10) that receives position information, and a control device (200, 300) that can communicate with the mobile terminal. And .
Before Symbol mobile terminal includes a first display means (11, 12) for displaying a first image, a first receiving means for receiving position information transmitted from the position information transmitting unit (34), said first receiver The first image processing means (21) for changing the first image according to the position information received by the means, the operating means (14, 15) for inputting a user instruction, and the first receiving means Transmitting means (33) for transmitting the current position information according to the position information and the operation information indicating the user's instruction input through the operation means to the control device.
The control device includes a second display unit (200) for displaying a second image, a second receiving unit (303) for receiving current position information and operation information transmitted from the mobile terminal, and the second receiving unit. Includes second image processing means (302) for changing the second image in accordance with the received current position information and operation information.

  According to a first preferred variation of the position detection system of the present invention, the second image processing means corresponds to the current position of the mobile terminal based on current position information received by the second reception means. The partial area of the two images is specified, and the image of the specified partial area is changed according to the operation information received by the second receiving means.

According to a second preferred modification of the position detection system of the present invention, the position information transmitting device transmits a plurality of positions for transmitting position information individually assigned to each unit space toward each of the plurality of unit spaces. An information transmitter is included, the plurality of position information transmitters are disposed on the ceiling, and the second display means is disposed on the floor.

According to a third preferred modification of the position detection system of the present invention, the position information transmitting apparatus transmits a plurality of positions for transmitting position information individually assigned to each unit space toward each of the plurality of unit spaces. An information transmitter, wherein the position information transmitter transmits the position information a predetermined number of times every predetermined time, and the mobile terminal receives each position information received by the first receiving means at the predetermined time. Current position information generating means for generating the current position information based on the number of receptions of each position information.

  According to a fourth preferred modification of the position detection system of the present invention, the current position information generation means is configured to determine a position based on a ratio of the number of reception times of each position information received by the first reception means in a certain period. Current position information indicating a position more detailed than the position indicated by the information is generated.

  According to a fifth preferred modification of the position detection system of the present invention, the current position information generating means represents each position information received by the first receiving means in a certain period in two-dimensional coordinates. The current position information is generated by weighted averaging according to the number of receptions.

  According to a sixth preferred modification of the position detection system of the present invention, the first image processing means displays the first image so as to include different explanatory text according to the position information received by the first reception means. Change.

  According to a seventh preferred modification of the position detection system of the present invention, the first image includes a button image that is enabled or disabled according to position information received by the first receiving means, The first image processing means changes the display mode of the button image according to the position information received by the first receiving means.

  According to an eighth preferred modification of the position detection system of the present invention, the operation information includes operation information indicating an enlarged display instruction, and the second image processing means indicates the enlarged display instruction. In accordance with the operation information, a part of the second image is enlarged centering on the position on the second image corresponding to the current position information received by the second receiving means.

  According to a ninth preferred modification of the position detection system of the present invention, the operation information includes operation information indicating a guidance request instruction, and the second image processing means indicates the guidance request instruction. In accordance with the operation information, a mark for guiding the user to a predetermined position is added to a position on the second image corresponding to the current position information received by the second receiving means.

Position detecting method of the present invention, position information transmission apparatus that sends position information (100, 400), and a mobile terminal for receiving position information (10), the mobile terminal that can communicate with the control device (200 , 300), and a method executed by the computer (21, 302) of the mobile terminal and the control device.
The position detection method, the mobile terminal of the computer (21), a first display control step of displaying the first image on the first display means (11, 12) of the mobile terminal, the mobile terminal of the computer (21) but first reception control step of receiving the location information transmitted from the position information transmitting apparatus through the first receiving means (34) of the mobile terminal, the mobile terminal of the computer (21), through the first receiving means A first image processing step for changing the first image in accordance with the received position information, a position received by the computer (21) of the mobile terminal in the first reception control step by the transmission means (33) of the mobile terminal; transmission system for transmitting operation information indicating a user instruction input through the current position information and the operation unit of the mobile terminal in accordance with the information to the control device Step, the control device of the computer (302), a second display control step of displaying the second image on the second display means (200) of the control device, a computer (302) of the control device, from said mobile terminal A second reception control step for receiving the current position information and the operation information to be transmitted through the second receiving means (303) of the control device , and the current received by the computer (302) of the control device through the second receiving means. A second image processing step of changing the second image in accordance with position information and operation information;

  According to the position detection system of the present invention, when the mobile terminal receives the position information, the first image displayed on the first display means of the mobile terminal changes, and the current position based on the position information received by the mobile terminal. Since the second image displayed on the second display means of the control device changes by transmitting the information and the operation information indicating the user's instruction input through the operation means from the mobile terminal to the control device, it is interesting An interesting new position detection system can be provided.

  According to the first preferred modification of the position detection system of the present invention, the second image displayed on the second display means is changed in the image corresponding to the received current position information. Among these, the image of the part corresponding to the current position information of the mobile terminal can be changed according to the operation information.

  According to the second preferred modification of the position detection system of the present invention, since the second display means is arranged on the ground, a visual effect is provided such that when the user operates the mobile terminal, the image of his / her foot changes. be able to.

  According to the third preferred modification of the position detection system of the present invention, even when a plurality of pieces of position information can be received, the current position information is generated based on the reception frequency of the position information. Can be detected correctly.

  According to the fourth preferred modification of the position detection system of the present invention, the current position of the mobile terminal is detected with more detailed accuracy than the position information by detecting the current position information based on the ratio of the number of times each position information is received. Can be detected.

  According to the fifth preferred modification of the position detection system of the present invention, the current position of the mobile terminal can be easily obtained by weighted average calculation.

  According to the sixth preferred modification of the position detection system of the present invention, when the user carrying the mobile terminal moves, the explanatory text corresponding to the destination is automatically displayed on the first display means of the mobile terminal. can do.

  According to the seventh preferred modification of the position detection system of the present invention, the button image displayed on the first display means of the mobile terminal is effective only when the user carrying the mobile terminal is at a specific position. can do. In addition, by changing the display mode of the button image, it is possible to notify the user whether the button image is in a valid state or an invalid state.

  According to the eighth preferred modification of the position detection system of the present invention, the user enlarges and displays a portion of the second image displayed on the second display means according to the current position of the mobile terminal carried by the user. Can be made.

  According to the ninth preferred modification of the position detection system of the present invention, the user can be guided to the destination by the second image displayed on the second display means.

External view of position detection system The figure which shows the positional relationship of the positional infomation transmitter 100 and the floor display 200. Block diagram showing the configuration of the position detection system External view of mobile terminal Block diagram showing internal configuration of mobile terminal Block diagram showing the internal structure of the server External view of position information transmitter 100 The figure which shows the irradiation range of four infrared rays irradiated from the positional information transmitter 100 Diagram showing unit space and unit area View of unit space seen from the horizontal direction The figure for demonstrating the light emission timing of infrared LED The figure for demonstrating the light emission timing of infrared LED The figure for demonstrating the light emission timing of infrared LED The figure for demonstrating the light emission timing of infrared LED The figure which shows the relationship between the receiving position and receiving frequency of position information Example of terminal-side image Other examples of terminal-side images An example of a floor image including an arrow 46 Other examples of floor images Example of terminal-side image Example of floor image including event video 47 Example of floor image change by enlargement processing Memory map of the RAM 24 of the mobile terminal 10 Example of event table 51 Example of reception count data 53 Memory map of RAM 301 of server 300 Example of discovery event table 57 An example of sightseeing course data 60 A flowchart showing a flow of processing executed by the CPU core 21 of the mobile terminal 10. The flowchart which shows the flow of the process performed with CPU302 of the server 300.

  Hereinafter, a position detection system according to an embodiment of the present invention will be described in detail.

  FIG. 1 shows an outline of a position detection system according to an embodiment of the present invention. In the present embodiment, a plurality of position information transmitters 100 are installed on the ceiling, and a plurality of (for example, 70) floor display 200 are installed on the floor. A plurality of position information transmitters 100 are arranged in a matrix above each floor display 200 as shown in FIG. A user carrying the mobile terminal 10 can freely move on the floor display 200.

  FIG. 3 is a block diagram showing the overall configuration of the position detection system of the present embodiment. The plurality of position information transmitters 100 arranged on the ceiling transmit infrared rays at predetermined timings based on control signals from the transmitter control device 400, respectively. This infrared ray includes position information. This position information is used to determine the current position of the mobile terminal 10. The plurality of floor displays 200 arranged on the floor display images according to the video signal output from the server 300. The mobile terminal 10 carried by the user has a function of receiving infrared rays transmitted from the location information transmitter 100. When receiving infrared rays from the location information transmitter 100, the mobile terminal 10 is based on the location information superimposed thereon. To determine its current position. Then, the mobile terminal 10 transmits current position information indicating its own current position and operation information corresponding to the input operation by the user to the server 300 by wireless communication. The server 300 changes the display image of the floor display 200 corresponding to the current position information according to the operation information according to the current position information and the operation information received from the mobile terminal 10.

  Next, details of the mobile terminal 10 will be described. In this embodiment, a portable game machine is used as the mobile terminal 10, but the present invention is not limited to this.

  FIG. 4 is an external view of the mobile terminal 10. In FIG. 4, the mobile terminal 10 includes a first LCD (Liquid Crystal Display) 11 and a second LCD 12. The housing 13 includes an upper housing 13a and a lower housing 13b. The first LCD 11 is accommodated in the upper housing 13a, and the second LCD 12 is accommodated in the lower housing 13b. The resolutions of the first LCD 11 and the second LCD 12 are both 256 dots × 192 dots. In this embodiment, an LCD is used as the display device. However, any other display device such as a display device using EL (Electro Luminescence) can be used. An arbitrary resolution can be used.

  The upper housing 13a is formed with sound release holes 18a and 18b for releasing sound from a pair of speakers (30a and 30b in FIG. 5) to be described later.

  The lower housing 13b is provided with a cross switch 14a, start switch 14b, select switch 14c, A button 14d, B button 14e, X button 14f, Y button 14g, L button 14L and R button 14R as input devices. Yes. As a further input device, a touch panel 15 is mounted on the screen of the second LCD 12. The lower housing 13b is also provided with a power switch 19 and an insertion slot for storing the memory card 17 and the stick 16. If only the touch panel 15 is used as an input device, the cross switch 14a, start switch 14b, select switch 14c, A button 14d, B button 14e, X button 14f, Y button 14g, L button 14L and R button 14R may not be provided.

  As the touch panel 15, an arbitrary system such as a resistive film system, an optical system (infrared system), and a capacitive coupling system can be used. The touch panel 15 has a function of outputting coordinate data corresponding to the contact position when the surface of the touch panel 15 is touched with the stick 16. In the following description, it is assumed that the player operates the touch panel 15 with the stick 16, but it is of course possible to operate the touch panel 15 with a pen (stylus pen) or a finger instead of the stick 16. In the present embodiment, the touch panel 15 having a resolution (detection accuracy) of 256 dots × 192 dots is used as in the resolution of the second LCD 12. However, the resolution of the touch panel 15 and the resolution of the second LCD 12 are not necessarily the same.

  Further, the upper housing 13a and the lower housing 13b are provided with infrared light receiving portions 34 for receiving the infrared light transmitted from the position information transmitter 100, respectively. The infrared light receiving unit must be arranged at a position that is not covered by the hand or finger of the user holding the mobile terminal 10. In this embodiment, even if one infrared light receiving unit 34 is covered with a user's hand or finger by disposing two infrared light receiving units 34 at positions separated from each other on the diagonal line of the mobile terminal 10, The infrared light transmitted from the position information transmitter 100 can be received by the infrared light receiver 34.

  The memory card 17 is a recording medium on which a computer program (position detection program) is recorded, and is detachably attached to an insertion port provided in the lower housing 13b.

  Next, the internal configuration of the mobile terminal 10 will be described with reference to FIG.

  In FIG. 5, a CPU core 21 is mounted on the electronic circuit board 20 accommodated in the housing 13. A connector 23 is connected to the CPU core 21 via a bus 22, an input / output interface circuit (referred to as I / F circuit in the drawing) 25, a first GPU (Graphics Processing Unit) 26, a second GPU 27, a RAM 24, The LCD controller 31, the wireless communication unit 33, and the infrared light receiving unit 34 are connected. The memory card 17 is detachably connected to the connector 23. The memory card 17 includes a ROM 17a that stores a position detection program and a RAM 17b that stores backup data in a rewritable manner. The position detection program stored in the ROM 17a of the memory card 17 is loaded into the RAM 24, and the position detection program loaded into the RAM 24 is executed by the CPU core 21. In addition to the position detection program, the RAM 24 stores temporary data and image data obtained by the CPU core 21 executing the position detection program. The I / F circuit 25 is connected to the touch panel 15, the right speaker 30a, the left speaker 30b, and the operation switch unit 14 including the cross switch 14a and the A button 14d shown in FIG. The right speaker 30a and the left speaker 30b are respectively arranged inside the sound release holes 18a and 18b.

  A first VRAM (Video RAM) 28 is connected to the first GPU 26, and a second VRAM 29 is connected to the second GPU 27. In response to an instruction from the CPU core 21, the first GPU 26 generates a first image based on the image data stored in the RAM 24 and renders the first image in the first VRAM 28. Similarly, the second GPU 27 generates a second image in accordance with an instruction from the CPU core 21 and draws it in the second VRAM 29. The first VRAM 28 and the second VRAM 29 are connected to the LCD controller 31.

  The LCD controller 31 includes a register 32. The register 32 stores a value of 0 or 1 according to an instruction from the CPU core 21. When the value of the register 32 is 0, the LCD controller 31 outputs the first image drawn in the first VRAM 28 to the first LCD 11 and the second image drawn in the second VRAM 29 to the second LCD 12. Output. When the value in the register 32 is 1, the first image drawn in the first VRAM 28 is output to the second LCD 12, and the second image drawn in the second VRAM 29 is output to the first LCD 11.

  The wireless communication unit 33 provides a wireless communication function for exchanging various data with the server 300 and other mobile terminals.

  The configuration of the mobile terminal 10 as described above is merely an example, and the mobile terminal of the present invention has at least a function of displaying an image, a function of receiving a signal from a position information transmitter, and a user input operation. What is necessary is just to provide the function to detect and the function to transmit a signal to the server 300.

  Next, details of the server 300 will be described.

  The server 300 includes a RAM 301, a CPU 302, a wireless communication unit 303, a hard disk 304, and a video signal output unit 305. The hard disk 304 stores computer programs (position detection programs) and image data. The position detection program is loaded into the RAM 301, and the position detection program loaded into the RAM 301 is executed by the CPU 302. In addition to the position detection program, the RAM 301 stores temporary data and image data obtained by the CPU 302 executing the position detection program. The wireless communication unit 303 provides a wireless communication function with the wireless communication unit 33 of the mobile terminal 10. The video signal output unit 305 outputs a video signal based on the image data generated by the CPU 302 to each floor display 200.

  The position detection program of the present invention is not only supplied to the mobile terminal 10 and the server 300 through an external storage medium such as the memory card 17, but also supplied to the mobile terminal 10 and the server 300 through a wired or wireless communication line. Alternatively, it may be recorded in advance in a nonvolatile storage device inside the mobile terminal 10 and the server 300.

  In the following description, when it is particularly necessary to distinguish, the position detection program executed in the mobile terminal 10 is referred to as a terminal side position detection program, and the position detection program executed in the server 300 is referred to as a server side position detection program. It shall be called.

  Next, the structure of the position information transmitter 100 will be described. As shown in FIG. 7, the position information transmitter 100 is configured by housing four infrared LEDs (Light Emitting Diodes) in one housing. Infrared rays from the respective infrared LEDs (first LED, second LED, third LED, fourth LED) are irradiated from the ceiling toward the floor, but are not irradiated in parallel to each other (that is, perpendicular to the floor). Instead, as shown in FIG. 8, the light is emitted slightly outward. In addition, the irradiation range of each LED can be adjusted to some extent by adjusting the length of the cylindrical member which lets infrared rays pass as shown in FIG.

  Next, a method for transmitting position information using the position information transmitter 100 will be described. The position information transmitter 100 is arranged in a matrix on the ceiling as shown in FIG. Here, as shown in FIG. 9, a rectangular parallelepiped space having four position information transmitters 100 as vertices is referred to as “unit space”, and the floor surface of the six surfaces constituting this rectangle is referred to as “unit region”. I will call it. Each of the four position information transmitters 100a to 100d shown in FIG. 9 has the structure shown in FIG. For the unit spaces having the position information transmitters 100a to 100d as apexes, the four infrared LEDs provided in the position information transmitters 100a to 100d are provided inside the unit space. Infrared rays from the infrared LEDs are respectively irradiated. The same position information (position information individually assigned for each unit space) is superimposed on these infrared rays. As a result, when the mobile terminal 10 is located, for example, in the unit space shown in FIG. 9, the mobile terminal 10 receives the infrared rays from at least one of the position information transmitters 100a to 100d, thereby 10 can specify in which unit space the user is located.

  In the present embodiment, as shown in FIG. 9, four infrared rays with the same position information superimposed on each unit space are irradiated from different directions, but the present invention is not limited to this, For example, you may make it provide only one infrared LED in the center part of the ceiling of each unit space. However, if it is set as the structure which irradiates the several infrared rays which superimposed the same positional information on each unit space from different directions like this embodiment, as shown in FIG. Even when the infrared ray is blocked by the user's head or the like and does not reach the infrared light receiving unit 34 of the mobile terminal 10, the infrared light received by the mobile terminal 10 from another location information transmitter 100 is superimposed with the same position information. Since the mobile terminal 10 can be identified more reliably because it reaches the unit 34, it is more preferable.

  In the present embodiment, the position information transmitter 100 is installed on the ceiling. However, the present invention is not limited to this, and the position information transmitter 100 may be installed on the floor, or on both the ceiling and the floor. May be installed.

  Next, position information transmission timing by the position information transmitter 100 will be described.

  In the present embodiment, infrared light that is amplitude-modulated using position information is emitted from each infrared LED. And the frequency band of the infrared rays irradiated from each infrared LED is common. Therefore, when infrared rays with different position information superimposed on the infrared light receiving unit 34 of the mobile terminal 10 simultaneously, an error occurs due to interference. Therefore, in order to avoid such an error due to interference, in this embodiment, the light emission timing of each infrared LED is controlled by the transmitter control device 400 so that infrared rays are not simultaneously irradiated to adjacent unit spaces. .

  Hereinafter, details of the control of the light emission timing by the transmitter control device 400 will be described with reference to FIGS. FIGS. 11-14 has shown the state which looked down at the floor from the upper direction rather than the positional information transmitter 100. FIG. Four circles indicated by chain lines inside each position information transmitter 100 represent infrared LEDs, and black circles among them represent infrared LEDs transmitting position information.

  In this embodiment, the transmitter control device 400 first irradiates the infrared LED indicated by the black circle in FIG. 11 for the first 25 ms, and the black circle in FIG. 12 for the next 25 ms. The infrared LED shown in FIG. 13 is irradiated with infrared rays, and the infrared LED shown with a black circle in FIG. 13 is irradiated for the next 25 ms, and the black circle in FIG. 14 is applied for the next 25 ms. The infrared LED indicated by is irradiated with infrared rays. Thereafter, the transmitter controller 400 repeats the same control. That is, when n and m are integers, the position information (1 + 2n, 1 + 2m) is transmitted to the unit area (1 + 2n, 1 + 2m) for the first 25 ms, and the unit area (1 + 2n) for the next 25 ms. , 2 + 2m), position information (1 + 2n, 2 + 2m) is transmitted, and for the next 25 ms, position information (2 + 2n, 1 + 2m) is transmitted to the unit area (2 + 2n, 1 + 2m). During 25 ms, position information (2 + 2n, 2 + 2m) is transmitted to the unit area (2 + 2n, 2 + 2m). In this way, each piece of position information is transmitted at a cycle of 100 ms.

  By the way, in FIG. 11, with respect to the unit areas (1, 1), (1, 3), (3, 1), (3, 3), position information (1, 1), (1, 3), (3 , 1) and infrared rays including (3, 3) are irradiated. Here, for example, infrared rays including position information (1, 1) are irradiated not only on the unit area (1, 1) but also on a part of the adjacent area. However, in the present embodiment, as will be described later, since the current position of the mobile terminal 10 is determined based on the reception frequency of the position information, the current position of the mobile terminal 10 does not become indistinguishable. . The infrared irradiation range including the position information (1, 1) is a range that covers at least the entire unit area (1, 1), and overlaps with the infrared irradiation range including other position information irradiated at the same time. As long as it is not in the range. The same applies to the infrared irradiation range including other position information.

  Next, position information reception frequency will be described with reference to FIG. FIG. 15 shows that the position information (2, 2) is received depending on the position of the mobile terminal 10 when the infrared light with the position information (2, 2) superimposed thereon is irradiated a plurality of times toward the unit area (2, 2). It is the figure which showed how frequency (ratio of the frequency | count of successful reception with respect to the frequency | count of irradiation) changes. The characteristics of the reception frequency depend on the type of the infrared LED, the structure of the position information transmitter 100, the performance of the infrared light receiving unit 34, the installation position of the infrared light receiving unit 34, etc., but roughly as shown in FIG. In addition, the frequency of receiving the position information (2, 2) tends to decrease as the distance from the center of the unit area (2, 2) increases.

  As described above, since the frequency of receiving position information corresponding to a unit area tends to decrease as the distance from the center of the unit area increases, when the mobile terminal 10 receives a plurality of pieces of position information, the position information By comparing information reception frequencies, the mobile terminal 10 can determine its current location. For example, each location information is transmitted 6 times in a certain period, the mobile terminal 10 receives the location information (2, 2) 6 times (100% as reception frequency), and the location information (2, 3) 3 times (received). (50% as a frequency) When received, the mobile terminal 10 is located on the unit area (2, 2) corresponding to the position information (here, the position information (2, 2)) having the highest reception frequency. It is determined that

  By detecting such reception frequency, a position that is more detailed than the position indicated by the position information can be detected. In the above example, since the mobile terminal 10 is located on the unit area (2, 2) and the reception frequency of the position information (2, 3) is 50%, the mobile terminal 10 It can be seen that it is located at a position shifted from the center of (2, 2) to the unit area (2, 3) side. In particular, when the reception frequency characteristic as shown in FIG. 15 is considered, it can be seen that the amount of deviation is about one-fourth of the length of one side of the unit area.

  As one simple method for calculating the detailed current position of the mobile terminal 10, each piece of position information received by the mobile terminal 10 (if the position information is not expressed in two-dimensional coordinates) There is a method of performing weighted averaging of position information expressed in two-dimensional coordinates) according to the number of receptions (or reception frequency). For example, in a certain period, the mobile terminal 10 receives the position information (1, 1) twice, the position information (1, 2) six times, the position information (2, 1) once, and the position information (2, 2). Is received twice, ((1,1) × 2 + (1,2) × 6 + (2,1) × 1 + (2,2) × 2) / (2 + 6 + 1 + 2) is calculated. The result (1.3, 1.7) is the current position of the mobile terminal 10. Here, the calculation result (1.3, 1.7) indicates that when the length of one side of the unit area is 1, the unit area (2, 1) is determined from the center position of the unit area (1, 1). ) And a position shifted by 0.7 toward the unit area (1, 2).

  As described above, by detecting the current position of the mobile terminal 10 in more detail than the position indicated by the position information, the number of position information transmitters 100 required to achieve the desired position detection accuracy is reduced. And the cost of the position detection system can be reduced.

  Next, referring to FIGS. 16 to 22, transition examples of the screens of the first LCD 11 and the second LCD 12 in the mobile terminal 10 when the user carrying the mobile terminal 10 moves on the floor display 200. A transition example of the screen of the floor display 200 will be described.

  FIG. 16 shows an initial image displayed on the first LCD 11 and the second LCD 12 of the mobile terminal 10. In the following, for simplicity of explanation, the image displayed on the first LCD 11 and the image displayed on the second LCD 12 are collectively referred to as a terminal-side image. The terminal-side image includes an explanation display field 40, an A course selection button 41, a B course selection button 42, an enlargement button 43, a past button 44, and a discovery button 45. The user touches the buttons displayed on the second LCD 12 via the touch panel 15 (more precisely, the area on the screen of the second LCD 12 on which these buttons are displayed). An instruction corresponding to the button can be input. Note that the discovery button 45 is a special button that can be selected only in a specific situation, and cannot be selected on the initial screen. Further, the display mode of the discovery button 45 changes between a selectable situation and a non-selectable situation so that the discovery button 45 can be selected or cannot be selected at a glance. For example, in a selectable situation, the discovery button 45 is normally displayed as shown in FIG. 20, and in a situation where it cannot be selected, the discovery button 45 is grayed out as shown in FIG. In the present embodiment, the button is selected using the touch panel 15, but the present invention is not limited to this, and the button may be selected using another input device (for example, the operation switch unit 14). .

  On the other hand, a map image of a certain region (Kyoto in this embodiment) is displayed as an overall image on the plurality of floor displays 200 as an initial image. This map image is generated by synthesizing images of vehicles, people, and birds generated by computer graphics processing with satellite photographs obtained by photographing this area from artificial satellites. Vehicles, people, and birds are displayed as if they are actually moving by animation processing. When the user walks on the plurality of floor displays 200 on which such map images are displayed, the user receives a fresh and mysterious feeling as if he was actually taking a walk over the area. . In the following, for the sake of simplicity, map images displayed on the plurality of floor display 200 are collectively referred to as floor images.

  FIG. 17 illustrates a terminal-side image immediately after the user touches the A course selection button 41 with the stick 16 on the initial screen illustrated in FIG. 16. When the user touches the A course selection button 41, an explanation indicating that the user's guidance is started along the A course is displayed in the explanation display column 40, and the B course selection button 42 is grayed out. On the other hand, on the floor display 200 under the user's feet, as shown in FIG. 18, an image in which an arrow 46 indicating the direction of the destination is combined with a map image is displayed. By moving according to the arrow 46, the user can visit a plurality of destinations in order along a predetermined course (A course or B course). In this way, the user can virtually tour the area displayed on the floor display 200. The operation mode of the position detection system that guides the user along the A course or the B course is hereinafter referred to as a sightseeing mode.

  When the user reaches the floor display 200B shown in FIG. 19 in which the current destination (for example, Gojo Ohashi) is displayed via the plurality of floor displays 200 from the floor display 200A shown in FIG. The terminal side image changes from the image shown in FIG. 17 to the image shown in FIG. The difference between the image shown in FIG. 17 and the image shown in FIG. 20 is that a description of Gojo Ohashi is displayed in the explanation display field 40 and that the discovery button 45 is changed from a grayed-out state to a normal state. It is. As described above, when the user reaches the vicinity of the display position of the destination, the explanation about the destination is automatically displayed in the explanation display column 40.

  When the user touches the discovery button 45 when the discovery button 45 is normally displayed as shown in FIG. 20, as shown in FIG. 21, the floor display 200 (here, the floor display in the user's feet) is displayed. 200B), an event video 47 corresponding to the location is displayed. In the example of FIG. 21, as an event video 47, a video of a monument built near Gojo Ohashi is displayed. Note that such an event video is not necessarily displayed in the sightseeing mode. The point where the event video is displayed is predetermined (for example, 150 points), and when the user approaches the point, the discovery button 45 changes from the grayed-out state to the normal state, and the event video is present. To be informed. As a result, the user can enjoy the pleasure of searching for a place where the event video is “hidden” as if he were searching for a treasure.

  Regardless of whether or not the operation mode of the position detection system is the sightseeing mode, the user moves to a mobile terminal after moving over a portion of the floor image displayed on the floor display 200 to be enlarged and displayed. By touching the ten enlargement buttons 43, the portion can be enlarged and displayed. For example, when the enlarge button 43 is touched on the lower left portion of the floor display 200B shown in FIG. 19, the image on the floor display 200B is doubled around the unit area where the user is located as shown in FIG. Is done. When the user further touches the enlarge button 43, the image on the floor display 200B is further doubled with the unit area where the user is located as the center. In this manner, the user can enlarge and display an arbitrary portion of the floor image. In the present embodiment, the floor image enlargement process is performed in units of images displayed on one floor display 200. That is, the floor image enlargement process as shown in FIG. 22 is performed only on the display image of the floor display 200B where the user is located, and is not performed on the display image of the adjacent floor display 200. . However, the present invention is not limited to this, and the entire floor image may be enlarged centering on the unit area where the user is located (as a result, the display images of all floor displays 200 change).

  When the user presses the past button 44 displayed on the terminal-side image, the map image displayed on the floor display 200 under the user's foot is displayed in the area where the displayed area is one hundred hundred years ago. It changes to a past image showing a state (for example, Heiankyo in the Heian period) with an illustration. Thereby, the user can confirm the past state of a desired area.

  Hereinafter, details of processing executed in the position detection system in order to realize the changes in the terminal-side image and the floor image as described above will be described.

  FIG. 23 is a memory map of the RAM 24 of the mobile terminal 10. The RAM 24 stores a terminal side position detection program 50, an event table 51, explanation data 52, and reception count data 53. The terminal side position detection program 50 is loaded from the ROM 17 a of the memory card 17 to the RAM 24 and executed by the CPU core 21. The event table 51 and the explanation data 52 are loaded from the ROM 17a of the memory card 17 into the RAM 24, and appropriately referred to by the CPU core 21 when the terminal side position detection program 50 is executed. The reception count data 53 is created and updated by the CPU core 21 when the terminal side position detection program 50 is executed.

  As shown in FIG. 24, the event table 51 is a table indicating the presence / absence of an explanatory event and the presence / absence of a discovery event for each unit area. The explanation event is an event that automatically displays an explanation in the explanation display column 40 as described with reference to FIG. Explanation text corresponding to each explanation event is stored in the RAM 24 as explanation data 52. As described with reference to FIG. 21, the discovery event is an event for displaying an image on the floor display 200 when the user touches the discovery button 45. As shown in FIG. 25, the reception frequency data 53 stores the reception frequency for each position information.

  FIG. 26 is a memory map of the RAM 301 of the server 300. The RAM 301 stores a server-side position detection program 55, current map image data 56, discovery event table 57, event video data 58, past map image data 59, sightseeing course data 60, A course flag 61, and B course flag 62. Is done. The server side position detection program 55 is loaded from the hard disk 304 to the RAM 301 and executed by the CPU 302. The current map image data 56, the discovery event table 57, the event video data 58, the past map image data 59, and the sightseeing course data 60 are loaded from the hard disk 304 to the RAM 301 when the server-side position detection program 55 is executed, and are appropriately selected by the CPU 302. Referenced. The A course flag 61 and the B course flag 62 are created and updated by the CPU 302 when the server-side position detection program 55 is executed.

  The current map image data 56 is map image data as shown in FIG. As shown in FIG. 27, the discovery event table 57 is a table showing the correspondence between the unit area and the video data included in the event video data 58. The event video data 58 is data of the event video 47 as shown in FIG. The past map image data 59 is data of a past image displayed when the user touches the past button 44. As shown in FIG. 28, the sightseeing course data 60 includes the coordinates of the waypoints (destinations) in each of the courses A and B, and an arrival flag indicating whether or not the destination has been reached. The arrival flag is a flag indicating whether or not the user has visited the destination.

  Next, the flow of processing of the CPU core 21 based on the terminal side position detection program 50 will be described with reference to the flowchart of FIG.

  First, the CPU core 21 displays an initial image as shown in FIG. 16 on the first LCD 11 and the second LCD 12 of the mobile terminal 10 in step S10.

  In step S11, time counting is started.

  In step S12, the reception frequency of each position information in the reception frequency data 53 shown in FIG.

  In step S <b> 13, it is determined whether any infrared light receiving unit 34 has received infrared light from any position information transmitter 100. If the infrared ray is received, the process proceeds to step S14. If the infrared ray is not received, the process proceeds to step S16.

  In step S14, position information is acquired from the received infrared rays.

  In step S15, the reception frequency data 53 is updated by incrementing the reception frequency of the acquired position information.

  In step S16, it is determined whether a predetermined time (for example, 200 ms) has elapsed since the time was counted in step S11. If the predetermined time has elapsed, the process proceeds to step S17. If the predetermined time has not elapsed, the process returns to step S13. Here, the predetermined time corresponds to a period for measuring the reception frequency of each position information. If the predetermined time is shortened, the detection cycle of the current position of the mobile terminal 10 is shortened, but the detection accuracy is Lower. Conversely, if the predetermined time is lengthened, the detection cycle of the current position of the mobile terminal 10 is lengthened, but the detection accuracy is increased accordingly. Therefore, the size of the predetermined time should be set to an optimum value according to the application.

  In step S17, the current position of the mobile terminal 10 is determined based on the reception frequency of each piece of position information with reference to the reception count data 53. In the present embodiment, it is determined that the mobile terminal 10 is present on the unit area corresponding to the position information with the highest reception frequency. However, the present invention is not limited to this, and as described above, with a finer accuracy than the position information. The current position of the mobile terminal 10 may be determined.

  In step S18, the image displayed on the first LCD 11 or the second LCD 12 is changed according to the current position of the mobile terminal 10 determined in step S17. Specifically, it is determined by referring to the event table 51 whether there is an explanatory event or a discovery event corresponding to the current position of the mobile terminal 10 determined in step S17. If there is an explanation event, an explanation is displayed in the explanation display field 40 based on the corresponding explanation data 52. In addition, when a discovery event exists, the display mode of the discovery button 45 is changed.

  In step S19, a user instruction input through the touch panel 15 or the operation switch unit 14 is acquired as operation information. In this embodiment, an A course selection instruction input by touching the A course selection button 41, a B course selection instruction input by touching the B course selection button 42, and an input by touching the enlargement button 43. Any one of the enlargement instruction to be performed, the past image display instruction input by touching the past button 44, and the discovery event display instruction input by touching the discovery button 45 is acquired as the operation information. . If no user instruction is input, the process proceeds to step S20 without acquiring operation information.

  In step S20, the current position information indicating the current position of the mobile terminal 10 determined in step S17 and the operation information acquired in step S19 are transmitted to the server 300 through the wireless communication unit 33. However, if the operation information is not acquired in step S19, only the current position information is transmitted to the server 300. In step S20, identification information of the mobile terminal 10 may be transmitted to the server 300 as necessary. By doing so, when there are a plurality of mobile terminals 10, the server 300 can individually grasp the current position of each mobile terminal 10. Or it can guide individually along B course. In order to realize this, the arrival flag of the sightseeing course data 60 shown in FIG. 28 is individually prepared for each mobile terminal 10, and the server 300 determines the guidance destination of each mobile terminal 10 individually. You can do it.

  In step S21, the terminal-side image is changed according to the operation information acquired in step S19 (for example, the B course selection button 42 is grayed out as shown in FIG. 17).

  After step S21, the process returns to step S11.

  In the present embodiment, the current position of the mobile terminal 10 is determined every time a predetermined time elapses as described above, and the current position information indicating the current position is transmitted to the server 300. Not limited to this. For example, the current position of the mobile terminal 10 may be determined every time the total number of times each position information is received reaches a predetermined number, and the current position information indicating the current position may be transmitted to the server 300. Further, every time any position information is received, the current position is determined based on the recently received position information for the past eight times, and the current position information indicating the current position is transmitted to the server 300. Good.

  Next, the flow of processing of the CPU 302 based on the server side position detection program 55 will be described with reference to the flowchart of FIG.

  First, in step S <b> 30, the CPU 302 displays a map image on each floor display 200 based on the current map image data 56.

  In step S <b> 31, it is determined whether the current position information is received from the mobile terminal 10 through the wireless communication unit 303. If the current position information is received, the process proceeds to step S32. If the current position information is not received, step S31 is repeated until the current position information is received.

  In step S32, it is determined whether operation information has been received from the mobile terminal 10. If the operation information is received, the process proceeds to step S33. If the operation information is not received, the process proceeds to step S42.

  In step S33, it is determined whether or not the operation information is an A course selection instruction. If the operation information is an A course selection instruction, the process proceeds to step S34. If the operation information is not an A course selection instruction, the process proceeds to step S35.

  In step S34, the A course flag 61 is turned ON. Then, the process proceeds to step S42.

  In step S35, it is determined whether the operation information is a B course selection instruction. If the operation information is a B course selection instruction, the process proceeds to step S36. If the operation information is not a B course selection instruction, the process proceeds to step S37.

  In step S36, the B course flag 62 is turned ON. Then, the process proceeds to step S42.

  In step S37, it is determined whether the operation information is an enlargement instruction. If the operation information is an enlargement instruction, the process proceeds to step S38. If the operation information is not an enlargement instruction, the process proceeds to step S39.

  In step S38, based on the current position information received from the mobile terminal 10, an enlargement process is performed on the corresponding image on the floor display 200 with the current position of the mobile terminal 10 as the center, as shown in FIG. Then, the process proceeds to step S42. In the example of FIG. 22, the enlargement process is performed centering on the unit area where the user (that is, the mobile terminal 10) is located. However, the current position information received from the mobile terminal 10 is more detailed than the unit area (for example, If a certain point in the unit area is indicated, the image may be enlarged around that point.

  In step S39, it is determined whether the operation information is a past image display instruction. If the operation information is a past image display process, the process proceeds to step S40. If the operation information is not a past image display process (this means that the operation information is an event video display instruction), the process proceeds to step S40. Advances to step S41.

  In step S40, based on the current position information received from the mobile terminal 10 and the past map image data 59, the corresponding image on the floor display 200 is changed from the current map image to the past map image. Then, the process proceeds to step S42.

  In step S41, for example, an event video 47 as shown in FIG. 21 is displayed on the corresponding floor display 200 based on the current position information received from the mobile terminal 10, the discovery event table 57, and the event video data 58. Let Then, the process proceeds to step S42.

  In step S42, it is determined whether the operation mode of the server 300 for the mobile terminal 10 is the sightseeing mode. Specifically, when the A course flag 61 or the B course flag 62 is ON, it is determined that the tourist mode is selected, and when both the A course flag 61 and the B course flag 62 are OFF, Judge that it is not in tourist mode. If the operation mode of the server 300 is the sightseeing mode, the process proceeds to step S43. If not, the process returns to step S31.

  In step S43, it is determined whether the mobile terminal 10 has reached the destination with reference to the current position information received from the mobile terminal 10 and the sightseeing course data 60. For example, when the mobile terminal 10 is sequentially guided to the destination A and the destination B of the A course and then guided to the next destination C, the mobile terminal 10 is based on the sightseeing course data 60 shown in FIG. Is compared with the coordinates (Xc, Yc) of the next destination C to determine whether the mobile terminal 10 has reached the destination. If the mobile terminal 10 has reached the destination, the process proceeds to step S44. If the mobile terminal 10 has not reached the destination, the process proceeds to step S45.

  In step S44, the arrival flag corresponding to the destination reached by the mobile terminal 10 is turned ON.

  In step S45, as shown in FIG. 18, based on the coordinates of the destination indicated by the sightseeing course data 60, the map image displayed on the floor display 200 corresponding to the current position information received from the mobile terminal 10 is displayed. An arrow 46 indicating the direction of the destination is synthesized.

  After step S45, the process returns to step S31. It should be noted that the enlarged display in step S38 and the past image display in step S40 may be performed for a certain period of time, and the original map image may be returned after the lapse of the certain period.

  As described above, according to the present embodiment, the image displayed on the first LCD 11 or the second LCD 12 of the mobile terminal 10 automatically changes according to the current position of the mobile terminal 10, and the user touches the touch panel. When an instruction is input through 15, the map image displayed on the floor display 200 under the user's feet changes according to the instruction. Thus, according to the present embodiment, an interesting and interesting new position detection system can be provided.

  In the present embodiment, the position information is transmitted from the position information transmitter 100 using infrared rays. However, the present invention is not limited to this, and the position information may be transmitted using signals other than infrared rays. . In addition, the mobile terminal 10 and the server 300 are not limited to wireless communication, and communication may be performed using a communication cable.

  In the present embodiment, in order to prevent interference of infrared rays transmitted from the position information transmitter 100, infrared rays are transmitted from each position information transmitter 100 in a cycle consisting of four phases shown in FIGS. The present invention is not limited to this. For example, when the diameter of the reception area of each position information is in the range of 2 to 3 times the length of one side of the unit area, the position information (0 + 3m) when nine phases, ie, m and n are integers. , 0 + 3n), the second phase for transmitting position information (0 + 3m, 1 + 3n), the third phase for transmitting position information (0 + 3m, 2 + 3n), and the fourth phase for transmitting position information (1 + 3m, 0 + 3n). Phase, fifth phase for transmitting position information (1 + 3m, 1 + 3n), sixth phase for transmitting position information (1 + 3m, 2 + 3n), seventh phase for transmitting position information (2 + 3m, 0 + 3n), position information (2 + 3m, 1 + 3n) ) In the eighth phase for transmitting the position information (2 + 3m, 2 + 3n) in the cycle consisting of the ninth phase for transmitting each position information transmitter 100. Infrared rays may be transmitted.

  Further, in order to prevent interference of infrared rays transmitted from the position information transmitter 100, instead of shifting the transmission timing of the position information for the adjacent unit areas as described above, the infrared frequency bands for the adjacent unit areas are made different. It may be. In this case, by providing the mobile terminal 10 with a function of simultaneously receiving a plurality of infrared rays having different frequency bands, it is possible to prevent a reception error due to the interference of infrared rays without shifting the transmission timing of the position information for the adjacent unit areas. .

  In the present embodiment, the position information is transmitted from the position information transmitter 100, but information other than the position information may be transmitted as additional information as necessary. For example, arbitrary information output from the server 300 is transmitted to each position information transmitter 100 via the transmitter control device 400, and this information is transmitted from the position information transmitter 100 together with the position information as additional information. May be.

  In the present embodiment, an example in which a map is displayed on the floor display 200 has been described, but the present invention is not limited to this. Several other application examples of the present invention will be described below.

(First application example)
The first application example is an example in which a virtual pond is displayed using the entirety of a plurality of floor displays 200. The pond image displayed on the floor display 200 is generated by computer graphics processing. Fish exist in this pond, and their movement is controlled by the CPU 302 of the server 300. Specifically, the movement of the fish is controlled so as to escape when the user carrying the mobile terminal 10 approaches. The CPU 302 can determine whether the user has approached the fish by comparing the current position information transmitted from the mobile terminal 10 with the current position of the fish. The direction in which the fish escapes is the direction away from the user. For example, when a user moves from the top of the unit area (1, 0) to (1, 1) while the fish is displayed in the unit area (1, 1), the CPU 302 that detects that moves the fish. The unit area (1, 1) is moved toward (1, 2).

  On the other hand, a “bait button” is displayed on the second LCD 12 of the mobile terminal 10, and when the user touches the “bait button”, a fish approaches the user's feet. Specifically, when detecting that the user has touched the “bait button” based on the operation information transmitted from the mobile terminal 10, the CPU 302 moves the fish to a position corresponding to the current position information transmitted from the mobile terminal 10. Move.

  In addition, a lotus leaf floats in a specific area on the pond (assuming unit area (2, 2)), and a plurality of camellia are on the lotus leaf. When the user carrying the mobile terminal 10 moves over the unit area (2, 2), the CPU core 21 of the mobile terminal 10 outputs a song (a frog song) from the right speaker 30a and the left speaker 30b of the mobile terminal 10. To do. Whether or not the user carrying the mobile terminal 10 has moved onto the unit area (2, 2) can be determined based on the position information transmitted from the position information transmitter 100. In addition to the position information, a song output start signal is transmitted from the position information transmitter 100 at regular intervals. The transmission interval of the song output start signal is a time corresponding to two bars of the song output by the CPU core 21, and the CPU core 21 moves the user carrying the mobile terminal 10 over the unit area (2, 2). Then, when the song output start signal is received from the position information transmitter 100, the output of the song is started. As a result, for example, when two or more users carrying the mobile terminal 10 gather on the unit area (2, 2) at different timings, each mobile terminal 10 receives each other by an integral multiple of the time of two bars. The song will be output with a shift. As a result, there is an interesting effect that “spinning” is performed by the plurality of mobile terminals 10 on the unit area (2, 2).

  In addition, a “ripple button” is displayed on the second LCD 12 of the mobile terminal 10, and when the user touches the “ripple button”, the ripple spreads on the water surface around the user's feet across the plurality of floor displays. Display control is performed.

(Second application example)
The second application example is an example in which a virtual garden is displayed using the entirety of the plurality of floor displays 200. The garden image displayed on the floor display 200 is generated by computer graphics processing. A plurality of treasures are buried in the ground of this garden, and when the user carrying the mobile terminal 10 approaches the place where the treasure is buried, a “digging button” is displayed on the second LCD 12 of the mobile terminal 10. When the user touches this “dig button”, an animation image in which a treasure appears by digging the ground displayed there is displayed on the floor display 200 under the user's feet. In this way, the user can search for treasure and play. The mechanism for displaying the “dig button” when approaching the place where the treasure is buried can be realized by the same mechanism as the discovery button described above. An animation image in which a treasure appears can be realized by a mechanism similar to the event video described above.

10 Mobile terminal 11 First LCD
12 Second LCD
13 Housing 13a Upper housing 13b Lower housing 14 Operation switch 14a Cross switch 14b Start switch 14c Select switch 14d A button 14e B button 14f X button 14g Y button 14L L button 14R R button 15 Touch panel 16 Stick 17 Memory card 17a ROM
17b RAM
18a, 18b Sound release hole 19 Power switch 20 Electronic circuit board 21 CPU core 22 Bus 23 Connector 24 RAM
25 I / F circuit 26 1st GPU
27 Second GPU
28 First VRAM
29 Second VRAM
30a Right speaker 30b Left speaker 31 LCD controller 32 Register 33 Wireless communication unit 34 Infrared light receiving unit 40 Description display field 41 A course selection button 42 B course selection button 43 Enlarge button 44 Past button 45 Discovery button 46 Arrow 47 Event video 50 Terminal side Position detection program 51 Event table 52 Explanation data 53 Number of receptions data 55 Server side position detection program 56 Current map image data 57 Discovery event table 58 Event video data 59 Past map image data 60 Sightseeing course data 61 A course flag 62 B course flag 100 Position information transmitter 200 Floor display 300 Server 301 RAM
302 CPU
303 Wireless Communication Unit 304 Hard Disk 305 Video Signal Output Unit 400 Transmitter Control Device

Claims (11)

A position detection system comprising a position information transmitting device for transmitting position information, a mobile terminal for receiving position information, and a control device capable of communicating with the mobile terminal ,
Before Symbol mobile terminal,
First display means for displaying a first image;
First receiving means for receiving position information transmitted from the position information transmitting device ;
First image processing means for changing the first image in accordance with position information received by the first receiving means;
Operation means for inputting user instructions;
Transmitting means for transmitting the current position information corresponding to the position information received by the first receiving means and operation information indicating a user instruction input through the operation means to the control device;
The control device includes:
Second display means for displaying a second image;
Second receiving means for receiving current position information and operation information transmitted from the mobile terminal;
And a second image processing means for changing the second image according to the current position information and the operation information received by the second receiving means.   The second image processing means specifies a partial area of the second image corresponding to the current position of the mobile terminal based on the current position information received by the second receiving means, and the image of the specified partial area The position detection system according to claim 1, wherein the position is changed according to operation information received by the second receiving means. The position information transmitting device includes a plurality of position information transmitters that transmit position information individually assigned to each unit space toward each of the plurality of unit spaces,
The plurality of position information transmitters are arranged on a ceiling,
The position detection system according to claim 2, wherein the second display means is disposed on a floor. The position information transmitting device includes a plurality of position information transmitters that transmit position information individually assigned to each unit space toward each of the plurality of unit spaces,
The position information transmitter transmits the position information a predetermined number of times every predetermined time,
The mobile terminal further includes current position information generating means for counting the number of times each position information is received by the first receiving means during the predetermined time and generating the current position information based on the number of times each position information is received. The position detection system according to claim 1, comprising: The current position information generating means generates current position information indicating a position that is more detailed than the position indicated by the position information, based on a ratio of the number of reception times of each position information received by the first receiving means in a certain period. The position detection system according to claim 4 .   The current position information generating means generates the current position information by performing weighted averaging according to the number of receptions of each position information received by the first receiving means in a certain period in two-dimensional coordinates. The position detection system according to claim 5.   The position detection system according to claim 1, wherein the first image processing unit changes the first image so as to include different explanatory texts according to the position information received by the first receiving unit. The first image includes a button image that is enabled or disabled according to the position information received by the first receiving unit,
The position detection system according to claim 1, wherein the first image processing unit changes a display mode of the button image in accordance with position information received by the first receiving unit. The operation information includes operation information indicating an enlarged display instruction,
In response to the operation information indicating the enlargement display instruction, the second image processing unit is configured to select one of the second images around the position on the second image corresponding to the current position information received by the second receiving unit. The position detection system according to claim 1, wherein the part is enlarged. The operation information includes operation information indicating a guidance request instruction,
The second image processing means guides the user to a predetermined position at a position on the second image corresponding to the current position information received by the second receiving means according to the operation information indicating the guidance request instruction. The position detection system according to claim 1, wherein a mark for adding is added. Position and position information transmission apparatus that sends location information, the mobile terminal receiving the location information, in the position detecting system comprising a communicable control apparatus and the mobile terminal, of the mobile terminal and the controller computer A position detection method performed by
A first display control step in which the computer of the mobile terminal displays a first image on the first display means of the mobile terminal;
The computer of the mobile terminal, a first reception control step of receiving the location information transmitted from the position information transmitting apparatus through the first receiving means of the mobile terminal,
A first image processing step in which the computer of the mobile terminal changes the first image according to position information received through the first receiving means ;
The mobile terminal computer receives current position information corresponding to the position information received in the first reception control step to the transmission means of the mobile terminal and operation information indicating a user instruction input through the operation means of the mobile terminal. A transmission control step for transmitting to the control device;
A second display control step in which the computer of the control device displays a second image on the second display means of the control device;
A second reception control step in which the computer of the control device receives the current position information and the operation information transmitted from the mobile terminal through the second receiving means of the control device; and
A position detection method , comprising: a second image processing step in which the computer of the control device changes the second image according to current position information and operation information received through the second receiving means.

Images