JP4308043B2 - Sense table management device, sense table management method and program in the same - Google Patents

Description

  The present invention relates to a sense table management device, a pack device detection method in the same device, and a program which are placed on the sense table to move on the sense table and detect the coordinates and rotation angle thereof.

As a next-generation user interface following CUI (Character User Interface) and GUI (Graphical User Interface), MIT is researching an intuitive interface called TUI (Tangible User Interface).
A device called a sense table is used as a platform for this research, and this device is composed of a pack for detecting the position and rotation angle in addition to the sense table body (see Non-Patent Document 1).

FIG. 7 shows a configuration example of a sense table device when network design is performed using TUI (for example, see Non-Patent Document 1).
That is, a design drawing generated and output by the PC 72 is projected through the projector 73 on the sense table main body 71 on which the magnetic sheet is laid, and the user operates the pack 74 on which the coil is wound on the design drawing. As a result, the PC 72 captures the coordinate position or rotation angle.

For example, when a link is set between nodes represented in the design drawing projected on the sense table main body 71, it is performed by bringing the packs 74 bound to the node for setting the link into contact with each other, and the band of the link is changed. In this case, the pack 74 is bound to the link and rotated. By applying this TUI, a pack operation by a plurality of persons is possible, and a design by collaboration is possible while discussing between designers.
[Search February 13, 2004] Internet <URL: http://tangible.media.mit.edu/papers/SenseTable_CHI01/SenseTable_CHI01.html>

By the way, the above-described sense table employs a method of detecting a current that is transmitted from one side to the magnetic sheet and resonates with it on the other side. In this method, for example, the number of coils is 20, the length of the side on the transmission side is 40 cm (80 channels when the width of the loop coil is 5 mm), and the transmission timing is detected as 0.1 milliseconds. If it is taken, it will be 160 milliseconds in 0.1 millisecond x 20 frequency x 80 channels, and it takes 160 milliseconds to detect all 20 coils.
However, in actual processing, even if not all data is available, a method of acquiring data from the detection device side such as a PC is adopted. For example, when the acquisition timing interval is 50 milliseconds, the worst case is 200 milliseconds. Will be delayed. Therefore, it is difficult to use this in an application that requires real-time performance, and improvement has been demanded.

  The present invention has been made in view of the above circumstances, and has improved the detection speed of the coil on the sense table and eliminated the influence of the speed reduction due to the increase in the coil, and the pack apparatus detection method in the apparatus. As well as providing a program.

  In order to solve the above-described problems, the present invention is a sense table management device that detects a position of a pack device on which a coil is mounted and moves on a sense table, and detects a movement locus of the coil based on the detected position. A coil information acquisition unit that acquires coil information of a coil mounted on the pack device, and a coil detection that detects a coil located on the sense table based on the coil information acquired by the coil information acquisition unit And the detection frequency information of the detected coil and the non-detected coil based on the detection result of the coil detection unit, and in the sense table according to the priority order based on the updated detection frequency information And a detection frequency control unit that outputs information indicating the frequency of the coil to be detected.

  Further, the present invention provides a pack that identifies a pack based on a combination of detected coils with reference to management table information indicating information for identifying a coil detected by the coil detector in the sense table management device described above. It has a specific part.

  In order to solve the above-described problems, the present invention provides a sense table management device that detects a position of a pack device on which a coil is mounted and moves on a sense table, and detects a movement locus of the coil based on the detected position. In the sense table management method, the coil information of the coil mounted on the pack device is acquired, the coil located on the sense table is detected based on the acquired coil information, and based on the detection result, Update the detection frequency information of the detected coil and the coil that has not been detected, and in accordance with the priority order based on the updated detection frequency information, information indicating the frequency of the coil to be detected with respect to the sense table. It is characterized by outputting.

  In order to solve the above-described problems, the present invention provides a sense table management device that detects the position of a pack device on which a coil is mounted and moves on a sense table, and detects the movement trajectory of the coil based on the detected position. It is a program to be used, the step of acquiring coil information of a coil mounted on the pack device, the step of detecting a coil located on the sense table based on the acquired coil information, and a detection result The detection frequency information of the detected coil and the non-detected coil is updated on the basis of, and the frequency of the coil to be detected is indicated to the sense table in accordance with the priority order based on the updated detection frequency information. Outputting information to be executed by a computer.

According to the present invention, the sense table management device acquires coil information of all the coils mounted on the pack device, and the coils positioned on the respective magnetic sheets constituting the sense table based on the acquired coil information, and By identifying the pack device and acquiring coil information according to priority control based on detection frequency information of detected coils and coils that have not been detected, the coil detection speed can be improved. Moreover, if the number of coils existing on the same magnetic sheet increases, the detection speed relatively decreases, but the detection speed of the coils existing on the magnetic sheet can be detected dramatically faster than the conventional method. Thus, even when the number of coils is increased from the current 20, if the number of coils existing on the same sheet is the same, the detection speed hardly changes, and the effect of the speed decrease accompanying the increase in the number of coils. Does not occur.
In addition, referring to management table information indicating information for identifying the detected coil, which is generated for each magnetic sheet, by identifying the pack based on the detected coil combination, the detected coil combination is It can be easily confirmed, and the pack on which the coil is mounted can be quickly identified.

FIG. 1 is a block diagram showing an embodiment of a sense table management apparatus of the present invention. The sense table management device 3 of the present invention is configured by, for example, a PC, and includes a coil information acquisition unit 31, a coil management table (TBL) 32, a pack identification unit 33, and a detection frequency control unit.
The coil information acquisition unit 31 acquires coil information existing on the sense table 2. For example, at the initial time (power ON), the coil information of all the coils mounted on the pack device 1 is acquired, and thereafter, the coil information of the coils designated in the sense table 2 from the detection frequency control unit 34 is acquired. .
The coil detection unit 35 detects a coil based on the information acquired by the coil information acquisition unit 31. For this detection, for example, a table that associates the coil ID and the coil frequency is stored in the memory in advance, and by referring to this table, based on the information acquired by the coil information acquisition unit 31, Detect the coil.

As shown in FIG. 2, an example of the data structure of the coil management TBL 32 includes a coil TBL for each magnetic sheet (here, four sheets) constituting the sense table 2, and each bit constituting the coil TBL is sensed. This corresponds to the ID of each coil mounted on the pack device placed on the table, and detection presence / absence information is set by bit ON / OFF. Correspondence table information (not shown) indicating correspondence between the pack device and a combination of coil IDs mounted on the pack device is also stored in a predetermined memory, and the correspondence table information is read and referred to. Thus, the pack device can be specified.
The pack specifying unit 33 has a function of specifying a coil and a pack device located on the magnetic sheet by referring to the coil TBL stored in the coil management TBL 32 and the above-described correspondence table.
The detection frequency control unit 34 updates the detection frequency information of the detected coil and the coil that has not been detected, and information on the frequency to be oscillated in the sense table 2 according to the priority order based on the updated detection frequency information ( (Corresponding to the frequency of the coil to be detected).

As shown in FIG. 4, the sense table 2 is composed of four magnetic sheets (# 0 to # 3) here.
Each magnetic sheet has an antenna printed wire (sensor substrate) laid inside, and each sensor substrate has a receiving coil with a narrow width in the X and Y directions. A transmission carrier is supplied to the sensor board for a certain period (transmission channels CH1, CH2,...), And a signal induced by electromagnetic coupling between the coils mounted on the moving pack device is received (reception channel). ing.

  Here, in order to improve the detection speed of the pack device 1 (multiple coils) moving on the sense table 2, only the coils located on a specific magnetic sheet are preferentially detected. Usually, as shown in FIG. 4, about four 30 cm × 40 cm rectangular magnetic sheets are often combined and used. For example, all ten pack devices 1 (20 coils) are the same. It rarely exists in the magnetic sheet, and there are only about 5 packs (10 coils) at the maximum. For this reason, the detection frequency of the coil which exists in one magnetic sheet was set to about twice as high as the detection frequency of the coil which does not exist.

Note that, for example, in the case of a system in which six resonance frequencies are used in the case of five packs depending on how the coils are mounted on the pack device 1, the resonance frequency to be detected ( (Equivalent to the coil) can be reduced. As shown in FIG. 5 showing the detection status of the coils on the sense table 2, assuming that the resonance frequency of the coils is 20 and that one frequency detection takes 0.1 milliseconds, all the coils can be removed from one magnetic sheet. In order to detect, 0.1 milliseconds × 20 frequencies × 80 channels = 160 milliseconds are required.
Thus, when two coils are present on the same magnetic sheet, the coil present on the magnetic sheet: 0.1 milliseconds × 2 frequencies × 80 channels = 16 milliseconds (shortest), the coil not present on the magnetic sheet: 0 1 ms × 18 frequency × 80 channels + 16 ms × 2 = 176 ms. According to this method, when a coil that does not exist in the magnetic sheet is first placed on the magnetic sheet, it takes up to 176 milliseconds, but the possibility of moving the position of the coil is a coil that exists in the magnetic sheet. Because it is higher, there is no particular problem.

  When 10 coils exist in the same magnetic sheet, the coil present in the magnetic sheet: 0.1 milliseconds × 10 frequencies × 80 channels = 80 milliseconds (shortest), the coil not present in the magnetic sheet: 0.1 10 frequency x 80 channels + 80 msec x 2 = 240 msec. When the number of coils existing in the same magnetic sheet increases, the detection speed decreases relatively, but compared with the conventional method, the magnetic sheet Thus, the coil existing in the can be reliably detected quickly. Also, even when the number of coils is increased from the current 20, if the number of coils existing on the same magnetic sheet is approximately the same, the detection speed hardly changes, and the number of mounted coils can be increased. There is no problem of speed reduction.

For this reason, conventionally, the unidirectional transfer from the sense table 2 to the sense table management device 3 constituted by a PC or the like has been performed. However, according to the present invention, bidirectional data transfer is required as described below. . According to the embodiment of the present invention, the position of the coil is specified on the sense table management device 3 side, but the position of the coil can also be specified by a CPU (not shown) on the sense table 2 side. . In that case, only the detected coil number is sent to the sense table management device 3. Hereinafter, the information described as coil information is detected current value information in the case of the former two-way communication, and indicates a coil number in the latter case.
FIG. 6 is a flowchart showing the operation flow of the embodiment of the present invention. The flowchart shown in FIG. 5 also shows the processing procedure of the program of the present invention. The operation of the embodiment of the present invention shown in FIGS. 1 to 5 will be described in detail below with reference to the flowchart shown in FIG.

In the embodiment of the present invention, in the initial state when the power is turned on, the priorities for obtaining the resonance frequencies of all the coils positioned on the magnetic sheet are made equal. First, the coil information acquisition unit 31 acquires coil information in the initial state from the sense table 2 (S61). When the coil information is detected by the coil information acquisition unit 31, the coil detection unit 35 detects a coil based on the coil information (step S62), and updates the data of the coil management TBL 32 according to the detection result (S63).
The pack specifying unit 33 can specify a coil and a pack located on the magnetic sheet by referring to the coil management TBL 32. Here, the detection frequency control unit 34 transmits a coil ID (resonance frequency number) corresponding to the coil detected by the coil detection unit 35 (S64), and performs a coil detection frequency update process (S65). That is, the detection frequency of the detected coil is increased, and the detection frequency of the undetected coil is decreased.

Subsequently, as shown in FIG. 3 which is a conceptual diagram showing the detection frequency on the time axis, the detection frequency control unit 34 detects only the detection target coil m times (however, n> m). Control. Here, the detection frequency of the resonance frequency is set to decrease once every two times, and the coil information acquisition unit 31 is activated from the sense table 2 based on the priority indicated by the detection frequency described above, and the coil information is obtained. Obtain (S66). Subsequently, the process returns to S52, and the processes after S62 are repeated until the power is turned off (S67).
In FIG. 3, A and B both indicate a coil detection period.

As described above, in the present invention, the sense table management device 3 acquires coil information of all the coils mounted on the pack device 1, and each magnetic sheet constituting the sense table 2 based on the acquired coil information. The coil and pack device 1 located above are specified, and thereafter the coil information is acquired according to priority control based on the detection frequency information of the detected coil and the coil that has not been detected, thereby improving the coil detection speed. It is.
Moreover, if the number of coils existing on the same magnetic sheet increases, the detection speed relatively decreases, but the detection speed of the coils existing on the magnetic sheet can be detected dramatically faster than the conventional method. Thus, even when the number of coils is increased from the current 20, if the number of coils existing on the same sheet is the same, the detection speed hardly changes, and the effect of the speed decrease accompanying the increase in the number of coils. Does not occur.
Furthermore, by referring to the management table information that is generated for each magnetic sheet and indicates information for identifying the detected coil, the pack is identified based on the detected coil combination, so that the detected coil combination is It can be easily confirmed, and the pack on which the coil is mounted can be quickly identified.

In addition, according to the above-described embodiment of the present invention, the description has been made centering on the circular coil, but any shape that can be detected is not affected by the shape. In this case, the number of packs that can be used is further increased depending on the shape. .
In the above-described embodiment, coil information of all coils mounted on the pack device 1 is acquired. However, when at least one coil having a different frequency is mounted on each pack device 1, The coil information of coils having different frequencies may be acquired for each pack device 1. Accordingly, if the pack device 1 is not specified by the combination of coils and the frequency of the coil can be specified, the pack device 1 can be specified, and the load on the process of specifying the pack device 1 can be reduced.
Further, the procedure executed by each of the coil information acquisition unit 31, the pack identification unit 33, and the detection frequency control unit 34 shown in FIG. 1 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is stored in the computer. It is assumed that the sense table management apparatus of the present invention is realized by reading and executing the system. The computer system here includes an OS and hardware such as peripheral devices.

Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.
The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

  The embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the embodiments, and includes designs and the like that do not depart from the gist of the present invention.

It is a block diagram which shows embodiment of this invention. It is a figure which shows an example of the data structure of the coil management TBL shown in FIG. It is the conceptual diagram which showed the coil detection period on the time axis. It is a figure which shows an example of a structure of a sense table. It is the figure quoted in order to demonstrate the coil detection condition on a sense table. It is the flowchart quoted in order to demonstrate operation | movement of embodiment of this invention. It is a figure which shows the structural example of the sense table apparatus in the case of designing a network using TUI.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Pack, 2 ... Sense table, 3 ... Sense table management apparatus (PC) 31 ... Coil information acquisition part, 32 ... Coil management table (TBL), 33 ... Pack specific | specification part, 34 ... Detection frequency control part, 35 ... Coil Detection unit

Claims (4)

A sense table management device that detects a pack device moving on a sense table and detects a movement trajectory of the pack device based on the detected position,
A correspondence table indicating correspondence between the plurality of pack devices to be detected and coils mounted on each of the pack devices;
A coil information acquisition unit that acquires, from the sense table, coil information of coils mounted on a pack device located on the sense table among the pack devices that are the detection targets;
A coil detection unit for detecting a coil located on the sense table based on the coil information acquired by the coil information acquisition unit;
Based on the coil detected by the coil detection unit, the pack device located on the sense table is specified by referring to the management table information indicating the information for specifying the coil detected by the coil detection unit and the correspondence table Pack specific department to do,
Update the detection frequency of the coils detected by the coil detection unit and the coils not detected by the coil detection unit among the coils mounted on the pack device that is the detection target, and the pack device that is the detection target. Information indicating the frequency of the coil to be scanned is output to the sense table so that scanning for detecting all the coils to be mounted and scanning for detecting only the coil having the high detection frequency are performed at a predetermined ratio. A detection frequency control unit;
A sense table management device comprising: A plurality of coils are mounted on the pack device,
The correspondence table shows the correspondence between the pack device to be detected and the combination of coils mounted on each of the pack devices,
The sense table management device according to claim 1, wherein the pack specifying unit specifies a pack device based on a detected combination of coils. A sense table management method in a sense table management device that detects a pack device moving on a sense table and detects a movement trajectory of the pack device based on a detected position,
Obtaining from the sense table coil information of coils mounted on a pack device located on the sense table among a plurality of pack devices to be detected;
Detecting a coil located on the sense table based on the acquired coil information;
Based on the detected coils, management table information indicating information for identifying the detected coils, and a correspondence table indicating correspondence between a plurality of pack devices to be detected and coils mounted on the pack devices, respectively. Identifying a pack device located on the sense table with reference to
The detection frequency of the detected coil and the coil not detected among the coils mounted on the pack device as the detection target is updated, and all the coils mounted on the pack device as the detection target are detected. Outputting information indicating a frequency of a coil to be scanned with respect to the sense table so that scanning and scanning for detecting only the coil having a high detection frequency are performed at a predetermined ratio;
A sense table management method characterized by comprising : A program used for a sense table management device that detects a pack device moving on a sense table and detects a movement trajectory of the pack device based on a detected position,
Obtaining from the sense table coil information of coils mounted on a pack device located on the sense table among a plurality of pack devices to be detected;
Detecting a coil located on the sense table based on the acquired coil information;
Based on the detected coils, management table information indicating information for identifying the detected coils, and a correspondence table indicating correspondence between a plurality of pack devices to be detected and coils mounted on the pack devices, respectively. Identifying a pack device located on the sense table with reference to
The detection frequency of the detected coil and the coil not detected among the coils mounted on the pack device as the detection target is updated, and all the coils mounted on the pack device as the detection target are detected. Outputting information indicating a frequency of a coil to be scanned with respect to the sense table so that scanning and scanning for detecting only the coil having a high detection frequency are performed at a predetermined ratio;
A program that causes a computer to execute.

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