JP2006163991A - Management system for portable medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a management system for a portable medium by which a portable medium is allowed to execute its unique operation on the basis of the array of the portable media when a plurality of the media are combined, and each of the portable media is allowed to execute the operation unique to it on the basis of data such as an identifier on at least one portable medium in each set in addition to the array of the portable media when there are a plurality of the sets in which a plurality of the portable media are combined. <P>SOLUTION: When a plurality of the media (displays or the like) are arranged side by side, its array is estimated. Data (images or the like) corresponding to a relative position of each medium are transmitted. The data to be transmitted can be changed corresponding to data such as an identifier of a specific medium selected from among a plurality of the media arranged side by side. Each medium exchanges the identifier with the adjacent medium. The information of the identifier obtained by each medium is transmitted to the outside. The array can be estimated by totaling the results. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a portable medium management system, and more particularly to a portable medium management system that estimates an arrangement of a plurality of portable media and performs a specific operation according to the position of each portable medium.

  There are many requests to estimate how a plurality of media are arranged, or to distribute different data to each medium according to each position. As a typical example, when a plurality of display devices are arranged to form a single large screen, display data necessary for each display device is distributed.

  Conventionally, in such a case, video is distributed to each display device by a fixed connection from a video distribution device that divides the video. However, this method complicates the system and impairs scalability, and cannot cope with a change in the arrangement of the display device during operation.

  As an attempt to solve such a problem, for example, in Patent Document 1, a plurality of display media are connected in a daisy chain, and individual identification information is transmitted between adjacent media, so that each display medium has its own position. Knowing, it is possible to determine the portion that should be displayed from the display data. However, in this example, it is necessary to know in advance the shape of the entire array, such as whether the whole is linear or two-dimensionally configured.

In Patent Document 2, each display medium can know its own position by exchanging signals between a plurality of display media arranged in a matrix. However, even in this example, signals are exchanged only between adjacent display media.
JP 2000-20042 A Japanese Patent Laid-Open No. 10-333631

  Conventionally, since the medium is configured as described above, the medium cannot be arranged in a free shape when a plurality of media are combined. Further, since signals are exchanged only between adjacent media, it takes time to transmit information, and there is a problem that information cannot be transmitted first if there is a failure in the information transmission mechanism even at one location.

  Therefore, effective means for knowing the position of each medium when combining a plurality of media and performing processing such as unique image display based on the position information are desired.

  In order to solve the above-described problems, the present invention includes a means for each medium to which an identifier is given to exchange an identifier with a medium adjacent to the medium. Means for sending out, and means for estimating the arrangement of the media by combining the information of the identifiers sent from a plurality of media. Furthermore, a unique process corresponding to the position of each medium is performed by means such as changing the data to be sent to each medium based on the estimated arrangement of the medium.

  That is, the technical contents of the present invention can solve the above-described problems by including the following configuration.

(1) A portable medium management system for managing a plurality of portable media to which identifiers for identifying each of the plurality of portable media are allocated, and between each of the plurality of portable media between adjacent portable media. Comprising identifier transmission instruction means for instructing to transmit the identifier in at least one direction;
Adjacent state transmission instructing that each of the plurality of portable media conveys the adjacent state information including the identifier of each portable medium and the identifier of the portable medium adjacent to each portable medium to the outside. With instruction means,
An adjacent state receiving means for receiving the adjacent state information transmitted from each portable medium;
A portable medium management system comprising: a list creation unit that creates a list of the plurality of portable media based on the neighboring state information received by the neighboring state reception unit.

  According to the present invention, when a plurality of portable media are combined, a unique operation can be performed based on the arrangement of the portable media.

  Further, when there are a plurality of sets in which a plurality of portable media are combined, in addition to the arrangement of the portable media, each set is based on data such as an identifier on at least one portable media in each set. An operation specific to the portable medium can be performed.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to examples.

  FIG. 1 is a diagram showing a configuration of a first embodiment of a portable medium management system according to the present invention.

  In FIG. 1, id1, id2, id3, and id4 are identifiers assigned to the display devices D1, D2, D3, and D4, respectively, and in the present embodiment, “001”, “002”, “003”, and “004”, respectively. Value is assigned.

  mx is a management unit that distributes image data to each display device by wireless communication via the antenna ax. Also, it instructs each display device to transmit the identifier to the adjacent display device at regular intervals by wireless communication, receives the adjacent state sent from each display device, and processes the received adjacent state information Thus, the arrangement of the display device is estimated.

  As the display devices D1, D2, D3, and D4, liquid crystal displays, electroluminescence displays, particle movement display devices (electrophoretic display devices, dry toner display devices), and the like can be used.

  Each side of the display device D1 is provided with infrared communication elements i1a, i1b, i1c, i1d composed of light emitting diodes and phototransistors. The other display devices D2, D3, and D4 are similarly provided with infrared communication elements. These infrared communication elements are given directivity characteristics that allow communication only when they are opposed at a short distance.

  The infrared communication element is given a unique element identifier in each display device. For example, the infrared communication element i1a is given “01” as the element identifier as shown in FIG.

  The display device D1 includes a controller c1. The controller c1 controls communication with other display devices by the infrared communication element described above, and receives instructions and data from the management unit mx via the antenna a1. The other display devices D2, D3, D4 are similarly provided with a controller and an antenna.

  As the infrared communication protocol, for example, what has already been standardized as IrDA may be used, so only the contents of communication according to the present invention are described here.

  The controller c1 of the display device D1 transmits its own identifier to the adjacent display device via the infrared communication element i1b in accordance with the instruction of the management unit mx, and receives the identifier sent from the adjacent display device. To do. Similarly, the other display devices D2, D3, and D4 exchange identifiers with the adjacent display devices in accordance with the instruction of the management unit mx.

  The operation will be specifically described below.

  Assume that four display devices D1 to D4 are arranged as shown in FIG.

  The management unit mx instructs the display devices D1 to D4 to exchange identifiers with the adjacent display devices via the antenna ax.

  In accordance with this instruction, the controllers c1 to c4 of each display device obtain and store the identifiers of the adjacent display devices via the infrared communication devices under their control, and at the same time, which infrared communication device receives the identifier from which display device Remember how you did it.

  As a result of the above processing, each display device obtains adjacent state information as shown in FIG.

  FIG. 2 shows that in the display device D1 with the identifier “001”, the infrared communication element i1b with the element identifier “02” has received the identifier from the display device D2 with the identifier “002”.

  Next, the management unit mx instructs the display devices D1 to D4 to transmit the obtained adjacent state information to the management unit via the antenna ax.

  If the communication between the management unit mx and each of the display devices D1 to D4 is sufficiently reliable, the amount of communication can be reduced by removing redundant data from the data transmitted to the management unit.

  The information indicating that the display devices D1 and D2 are adjacent to each other is obtained by the infrared communication elements of both the display devices D1 and D2, and even if one of these two pieces of information is not transmitted to the management unit mx, There is no problem in sequence estimation. Here, only the information obtained by the display device with the lower identifier number among the two adjacent display devices is transmitted. Further, it is not necessary to originally transmit information regarding infrared communication elements for which information on adjacent display devices could not be obtained.

  The management unit mx receives and arranges the adjacent states transmitted from the display devices D1 to D4 in this way, thereby obtaining information as shown in FIG.

  From this result, first, the management unit mx can obtain “001, 002, 003, 004” as a list of identifiers of all the display devices.

  Here, since the direction of each display device is assumed to be unchanged, the element identifier of the infrared communication element corresponds to the adjacent direction. That is, if the identifier of the display device, the element identifier, and the identifier of the adjacent display device are known, the arrangement of the entire display device can be estimated, and it can be easily estimated that the entire arrangement is as shown in FIG.

  As described above, the management unit mx can estimate the arrangement of the display devices D1 to D4.

  FIG. 4 is a diagram illustrating an example of an original image to be displayed and an example of a division state thereof. In FIG. 4, p is the entire original image to be displayed, and p1 to p4 are partial images obtained by dividing the original image p into 2 × 2.

  The management unit mx divides the original image p into 2 × 2 based on the above-described sequence estimation result, the partial image p1 on the display device D1, the partial image p2 on the display device D2, the partial image p3 on the display device D4, The image p4 is transmitted to the display device D3.

  The original image p to be displayed may be a moving image. In this case, the original image p may be divided into 2 × 2 for each frame and transmitted from the management unit mx to each display device.

  In the case where the original image p is a moving image having a large data capacity and is expressed in a moving image expression format with a high compression rate such as MPEG-4, for example, the number of display units is relatively small, such as 2 × 2. In this case, if the original image p data is expanded for each frame and then divided and transmitted to the display device, the divided image data may be larger than the original data.

  If the management unit mx and the display devices D1 to D4 have sufficiently high processing capability, the management unit mx compresses the divided image data and transmits it, and each display unit decompresses the compressed image data. Can be configured to be displayed.

  The sequence estimation procedure and the image segmentation and transmission procedure described above can be applied regardless of the number of display devices and the sequence.

  When the number of display units is several hundred, if the original image p is divided into several hundred pieces, each piece of divided data becomes small without being compressed. When each divided data is transmitted without being compressed, each display device does not need to have a high processing capacity necessary for decompressing the data, and the management unit mx compresses the divided data. There is no need to provide the necessary advanced processing capabilities. On the other hand, the management unit mx is required to have a high communication capability for transmitting more image data to several hundred display units. In addition, when data is exchanged between the management unit and each display device by radio waves as in this embodiment, it is necessary to consider whether a communication path having a sufficient capacity for transmitting uncompressed data can be secured. is there.

  As can be seen from the above, the data is divided according to the data size of the original image p, the number of display units, that is, the number of divisions of the original image p, the processing capacity of the management unit, the processing capacity of the display unit, and the capacity of the communication path. It is necessary to select the representation format and compression rate of the later image data.

  Here, the management unit mx transmits image data, but another device may transmit image data in response to an instruction from the management unit mx.

  Here, the controllers c1, c2, c3, and c4 receive the image data, but another device may receive the image data in accordance with an instruction from each controller.

  In the present embodiment, the management unit mx determines which image data is transmitted to which display device, but other forms are possible.

  First, the management unit mx transmits to each display device that the array of the plurality of display devices is a 2 × 2 matrix. Next, the position of each display device is expressed as a coordinate value with the lower left of the array of the entire display device as the origin (1, 1) and transmitted to the corresponding display device. Alternatively, data obtained by combining identifiers and coordinate values of all display devices may be transmitted to all display devices. In FIG. 1, z1, z2, z3, and z4 are coordinate values of the display devices D1, D2, D3, and D4, respectively, and are values that the management unit mx transmits to the respective display devices.

  Each display device receives the data of the original image p from the management unit mx as it is. Each display device cuts out and displays a partial image to be displayed from the original image p from the array of the entire display device and its own coordinate value.

  Further, as a similar form, after each display device is informed of the array shape of the entire display device and the coordinates of each display device from the management unit mx as described above, each display device transmits the image data required by each display device to the management unit. The form of requesting mx is also possible.

  In these embodiments, since all the display devices have the same shape, the orientation is unchanged, and the arrangement is a simple matrix shape, the information on the arrangement of the display devices can be transmitted as the overall size and coordinate values. .

  Even when the shapes of the display devices are not the same, the orientation is not invariant, or the arrangement is not a simple matrix shape, the position information of each display device is expressed as coordinates of vertices representing the display device shape as a polygon, for example. Can do.

  In the present embodiment, the management unit mx instructs each display device to transmit the identifier to the adjacent display device. However, when the arrangement of the display device changes frequently, each infrared communication element is opposed to a new infrared communication element by monitoring the presence of the communication partner at intervals of several tens of milliseconds, or It may be possible to know that there is no infrared communication element that has been opposed until then, and each display device may autonomously start transmitting an identifier.

  Further, when the controller of one display device learns the change in the state of the infrared communication element relative to itself, that is, the change in the adjacent state, it notifies the management unit mx that there has been a change in the adjacent state. As a trigger, the management unit mx can instruct each display device to transmit the identifier to the adjacent display device.

  Commercially available wireless local area network devices can be used for wireless communication between the controllers c1 to c4 and the management unit mx of each display device. In this case, IP addresses can be used as the identifiers id1 to id4.

  It is also possible to make the local area network compatible with IPv6 and assign an IP address based on IPv6 as an identifier.

  Further, for the exchange between the plurality of display devices and the management unit mx, a method similar to a commercially available wireless tag with an anti-collision function can be used.

  In the embodiment described above, only one infrared communication means is provided on each of the four sides of each display device, and it is necessary to limit the arrangement of the display devices in a grid pattern. However, if a plurality of infrared communication means are installed at intervals on four sides of each display device so as to know through which infrared communication means the communication between the adjacent display devices is performed, each display device has a grid. It is possible to easily estimate how much it deviates from the shape arrangement, and to increase the degree of freedom of arrangement of the display devices.

  The embodiment shown in FIG. 5 is configured in view of this.

  In FIG. 5, D11, D12, and D13 are display devices configured in the same manner as in FIG. 1, and are each installed horizontally with respect to the ground and cannot be turned over. The main difference from the configuration of FIG. 1 is that each display device includes a plurality of infrared communication means on each side, and the display device D11 includes a compass cmp as an installation direction detection means.

  The display devices D11, D12, and D13 are assigned identifiers id11, id12, and id13, respectively. For example, the value of the identifier id11 is “011”.

  The compass cmp can detect the installation direction of +90 degrees, 0 degrees, and −90 degrees, assuming a predetermined erecting state as 0 degrees, and transmits the detection result to the controller c11. Send to management unit mx. Here, the left rotation is defined as the positive direction.

  Each of the display devices D11, D12, and D13 includes two infrared communication elements on the short side and three infrared communication elements on the long side, and each infrared communication element is a unique element in one display device as in the previous embodiment. An identifier is given. For example, the infrared communication element i11a is given “10” as the element identifier as shown in FIG.

  The opposing infrared communication element exchanges the identifier of the display device and the element identifier of the infrared communication element, and the display devices D11, D12, and D13 transmit adjacent state information to the management unit mx via the antennas a11, a12, and a13, respectively. Here, the element identifier of the infrared communication element is also exchanged between the display devices, which is a difference from the previous embodiment.

  As in the above-described embodiment, it is assumed that the reliability of the communication path is sufficiently high, and the display devices D11, D12, and D13 do not transmit redundant information. As in the previous embodiment, regarding the adjacent state of two adjacent display devices, the adjacent state information is transmitted to the management unit mx only from the display device with the smaller identifier value.

  When two display devices are adjacent to each other via a plurality of infrared communication elements, only the element identifier of the infrared communication element having the smallest element identifier value is transmitted to the management unit mx as the adjacent state information.

  In this way, the management unit mx obtains information as shown in FIG.

  FIG. 6 shows that in the display device D11 with the identifier “011”, the infrared communication element i11c with the element identifier “08” receives the identifier from the infrared communication element i13a with the element identifier “10” belonging to the display device D13 with the identifier “013”. It shows that it did.

  From this result, first, the management unit mx can obtain “011, 012, 013” as the identifier list of all the display devices.

  Further, the management unit mx proceeds with the analysis of the information in FIG. 6 as follows.

  First, the installation direction data is examined. It can be seen from the data of the fourth installation direction that the display device D11 with the identifier “011” is installed 90 degrees to the left.

  Next, the adjacent state information from the display device that provided the installation direction data is examined. It can be seen from the first data that the display device D11 with the identifier “011” and the display device D13 with the identifier “013” are adjacent to each other. It can be seen from the element identifier which side the display devices D11 and D13 are in contact with, and the relative position of each other is estimated.

  The positional relationship between the display devices D11 (identifier “011”) and D13 (identifier “013”) is known by the analysis so far. By referring to the identifier list of all the display devices created previously, it is understood that the estimation of the entire arrangement can be completed if the position of the display device D12 with the identifier “012” is known.

  By selecting and analyzing the second data as including the identifier “012” from the adjacent state information in FIG. 6, the sides where the display devices D11 and D13 are in contact with each other and the relative positions thereof are estimated, and the overall arrangement is estimated. Exit.

  As described above, the arrangement of the display devices can be estimated even when the individual display devices are rotatable and have a complicated arrangement.

  The following is an embodiment using a card-like or sheet-like medium superimposed.

  FIG. 7 is a conceptual diagram showing an actual use state of the third embodiment, and is assumed to be applied to a test in an educational institution such as a university.

  j1 is a student, and cd1 is a student card brought by student j1.

  p11 and p12 are electronic papers having a function of displaying characters and images transmitted from the outside or characters and images stored inside, and are distributed at the test site.

  Electronic paper is a device provided with a thin display device, and various liquid crystal display devices, organic EL display devices, particle movement display devices (electrophoretic display devices, dry toner display devices), and the like can be used as the display devices. In this embodiment, since portability and power saving are emphasized, it is desirable to use a particle movement type display device.

  The surfaces of the electronic papers p11 and p12 are roughened so that characters can be written on the surfaces with a pencil or the like.

  The student card cd1 and the electronic papers p11 and p12 are collectively referred to as an examination set st1.

  In addition to student j1, student j2 and the like exist in the examination hall, and a corresponding examination set st2 and the like exist.

  The examination set st2 is configured in the same manner as the examination set st1.

  s is an electronic stapler having a short-range wireless communication function for reading identifiers of various media and a wireless LAN function for performing communication over a relatively long distance.

  A host computer h includes a database db for managing information on students and information on electronic paper, and communicates with the electronic stapler s by a wireless LAN function.

  When receiving the identifier read by the electronic stapler s, the host computer h temporarily stores it in the identifier memory midd.

  As shown in FIG. 9, the database db stores in advance a student's name, student number, student ID identifier, presence / absence of registration of the subject, and a course status list db1 indicating the correspondence of each student's proficiency level. Yes.

  In order to provide students with different test questions according to their proficiency levels, a proficiency level question number list db2 indicating the correspondence between proficiency levels and problem numbers is also stored in the database db.

  A distribution sheet list db3 indicating a list of electronic papers to be distributed in the test is also stored in the database db.

  Test question display data and answer column display data are stored in the question file group dq and the answer column file group da, respectively.

  The question number of the test question, the corresponding question file, and the name of the answer column are shown in the question-file correspondence list df.

  Data generated with the execution of the test is also added to the database db as needed. For example, the correspondence information between the student number and the identifier of the electronic paper distributed to the student is registered in the used paper history list db4.

  The process of obtaining the used paper history list db4 will be described later.

  In the test described in this embodiment, it is assumed that the first sheet of a set of two electronic papers is used as a question sheet and the second sheet is used as an answer sheet.

  Data of several files from the question file group dq is sent to the electronic paper used as the question paper, and several files from the answer column file group da are sent to the electronic paper used as the answer paper. Data is sent.

  Here, only one test subject is shown for simplification of explanation, but the database can be expanded to correspond to a plurality of subjects by assigning a unique identifier to each of the plurality of test subjects.

  FIG. 8 is a detailed view showing the configuration of one test set st1.

  The student ID cd1 can communicate with the electrode ec, and the electronic papers p11 and p12 can communicate with each other via the electrode e. Furthermore, it communicates with the electronic stapler s by short-range wireless communication via the respective antennas an1, an11, and an12.

  The electrode e is used for connection with the display data writing device w, and a character or an image to be displayed is sent through the electrode e.

  Electrodes e and ec are also used to supply power.

  Further, the student ID cd1 and the electronic papers p11 and p12 rectify and smooth part of the signals received by the respective antennas an1, an11, and an12 to obtain at least a part of the power necessary for each operation.

  The display data writing device w receives display data from the host computer h. As the short-distance wireless communication means, a commercially available wireless tag with an anti-collision function or an equivalent means can be used.

  Since the electronic papers p11 and p12 have the electrodes e on the front and back sides, they can communicate with two opponents at the same time, and can determine whether the two opponents are on the front or back side.

  The student ID cd1 and the electronic papers p11 and p12 include controllers ctr1, ctr11, and ctr12, respectively, and these controllers control the communication and the like.

  The student ID cd1 and the electronic papers p11 and p12 are assigned id1, id11, and id12, respectively, as identifiers.

  The student ID cd1 includes a non-volatile memory m1 and stores therein a student number sid1 of the student j1. The electronic papers p11 and p12 also include nonvolatile memories m11 and m12, respectively.

The other test set st2 and the like are configured in the same manner as the test set st1.
The actual operation will be described below.

  When the electronic papers p11 and p12 are distributed to the student j1, the examination supervisor k superimposes the student ID cd1 on top, and in the order of the electronic papers p11 and p12, and scans with the electronic stapler s.

  The electronic stapler s instructs all the constituents of the test set st1 via the antenna ans2 to exchange identifiers between adjacent ones. Through the same procedure as in the first embodiment, the electronic stapler s creates a list of student IDs and electronic paper identifiers that make up the examination set st1, and estimates the order of arrangement.

  In this example, the order information is “id1, id11, id12”.

  The order information obtained above is sent to the host computer h via the antenna ans1. The host computer h receives the order information by the antenna anx.

  Next, the host computer h collates the course status list db1 with the information on the arrangement order, confirms that the identifier id1 of the student ID is included in the correspondence table db1, and determines whether or not the student with the student number has registered for the course. If it is confirmed and there is no registration, it is regarded as abnormal.

  Further, the host computer collates the information obtained by removing the ID id1 of the student ID from the information in the arrangement order, that is, “id11, id12” and the distribution scheduled paper list db3, and the identifiers id11 and id12 of the electronic papers p11 and p12 are distributed. It is confirmed that it is included in the scheduled paper list db3.

  If there is an abnormality in the confirmation result here, the host computer h transmits an error message to the electronic stapler s, and the electronic stapler s displays an error in the display window sd.

  If there is no abnormality in the confirmation result here, the host computer h writes into the used paper history list db4 as described below.

  As described above, in this test, the first one of the two electronic papers is used as the question paper and the second paper is used as the answer paper. Therefore, the electronic paper p11 is determined based on the order information obtained above. The host computer h decides to use the electronic paper p12 as the answer sheet and the electronic paper p12 as the answer sheet.

  Here, for simplification of processing, the student ID cd1 is determined to be superimposed on the top, but if the ID of the student ID is extracted from the list of identifiers obtained by the electronic stapler s, the student ID You can put your testimony anywhere. This can be easily done because all of the student IDs are listed in the course status list db1.

  The host computer h adds the identifiers id11 and id12 and the corresponding student number sid1 to the used paper history list db4, and further sends a message indicating that the electronic stapler s is normal, and the electronic stapler s sends the electronic papers p11 and p12 to the student ID cd1. Send identifier.

  The student ID cd1 writes the received identifiers id11 and id12 in the nonvolatile memory m1.

  Next, the examination supervisor k performs the same scanning on the examination set st2 held by the next student j2. The host computer h obtains the order of the identifiers of the electronic papers p21 and p22 in the same manner as the processing related to the student j1, and decides to use the electronic paper p21 as the question paper and to use the electronic paper p22 as the answer paper. Is added to the used paper history list db4.

  The student ID cd2 receives the identifier of the corresponding electronic paper in the same manner as above and writes it in its own nonvolatile memory.

  Similarly, scanning using the electronic stapler s is performed on all examination sets below st2, and information on the order of arrangement of identifiers of all electronic papers is obtained. In the used paper history list db4, all examinations are taken. The correspondence between student numbers and identifiers of question sheets and answer sheets is obtained in the form of a table.

  Next, the host computer h associates each electronic paper with the file name of the data to be displayed thereon and writes it in the paper-file correspondence list db5 as follows.

  This will be described based on the flowchart of FIG.

Step t1
One sheet identifier of the electronic paper is extracted from the distribution scheduled sheet list db3.

Step t2
The used paper history list db4 is searched, and the student number corresponding to the paper identifier taken out in the previous step is taken out. It also stores whether the paper identifier was found on the question paper or the answer paper.

Step t3
The course status list db1 is searched, and the proficiency level corresponding to the student number extracted in the previous step is extracted.

Step t4
The problem number list db2 by proficiency level is searched, and the problem number corresponding to the proficiency level extracted in the previous step is extracted. There may be a plurality of problem numbers to be taken out.

Step t5
When the used paper history list db4 is searched in step t2, the process branches depending on whether the paper identifier is found in the question paper or the answer paper. If it is a question sheet, the process branches to step t6, and if it is an answer sheet, the process branches to step t7.

Step t6
The problem-file correspondence list df is searched, and the problem file name corresponding to the problem number extracted in step t4 is extracted.

Step t7
The question-file correspondence list df is searched, and the answer column file name corresponding to the question number taken out at step t4 is taken out.

Step t8
The paper identifier extracted in step t1 and the file name extracted in step t6 or t7 are associated with each other and added to the paper-file correspondence list db5.

Step t9
If the paper identifier taken out in step t1 is the last one, the process is terminated. If there is still a paper identifier remaining, the process returns to step t1.

  The method for creating the paper-file correspondence list db5 has been described above.

  In this example, the electronic stapler s estimates the arrangement order of electronic paper and student ID. However, the electronic stapler s can also be configured to immediately send the information received from the electronic paper p21 or the like to the host computer h, and the host computer h estimates the arrangement order and sends the result to the electronic stapler s. .

  Further, if the proficiency level of each student is recorded in advance on the corresponding student ID and the value is read together with the student number, it is not necessary to associate the student number with the proficiency level in step t3.

  Further, by referring to the proficiency level problem number list db2, the problem number corresponding to the student number can be added in advance to the course status list db1. In this way, it is not necessary to associate the student number with the proficiency level at step t3.

  Next, display data writing to electronic paper will be described.

  If an error does not occur after the examination set st1 is scanned by the electronic stapler s, the student j1 takes the electronic papers p11 and p12 to the display data writing device w, and displays these two electronic papers one by one. Set to data writing device w.

  The writing on the electronic paper p11 will be described below.

  The display data writing device w reads the identifier id11 from the electrode e of the electronic paper p11, sends the identifier id11 to the host computer h, and requests data necessary for writing to the electronic paper p11.

  When the host computer h receives the request and the identifier id11, the host computer h searches the paper-file correspondence list db5 for a file name corresponding to the identifier id11, and sets the data of the file matching the file name as a problem file group dq or an answer. It reads from the column file group da and transmits it to the display data writing device w.

  As described above, since the electronic paper p11 is determined to be used as a problem sheet by the host computer h, the problem file name is described as the file name corresponding to the identifier id11 on the sheet-file correspondence list db5. Should be.

  Therefore, the host computer h reads data corresponding to the found file name from the problem file group dq and transmits it to the display data writing device w.

  The display data writing device w writes the received data to the electronic paper p11 through the electrode e.

  Next, the student j1 removes the electronic paper p11 from the display data writing device w, and sets the electronic paper p12. Thereafter, the contents of the answer column file are written on the electronic paper p12 by the same procedure.

  As described above, the test questions corresponding to the proficiency level of each student and the data in the answer column can be written on the electronic paper.

  In the embodiment described above, the host computer h and the display data writing device w are connected by wire. However, the display data writing device w may be equipped with a wireless LAN function to communicate with the host h by wireless communication. Is possible.

  Further, the display data writing device w can be equipped with a short-range wireless communication function similar to that of the electronic stapler s, and display data transfer to electronic paper can be performed using short-range wireless communication.

  When configured in the same manner as a wireless tag having a commercially available anti-collision function, display data can be written almost simultaneously with a plurality of electronic papers stacked.

  Further, the function of the writing device w is built in the electronic stapler s, the short-range wireless communication function via the antenna ans2 is used for display data transfer to the electronic paper, and the wireless LAN function via the antenna ans1 is used for communication with the host h. It is also possible to configure to use.

  In the embodiment described above, the communication between the superimposed media is performed by the contact between the electrode e and the electrode ec. As another method, for example, the electrodes e and ec are covered with an insulating film, and communication is performed by electrostatic coupling between the electrodes, or communication is performed using directional radio waves as disclosed in JP-A-2001-331772. is there.

  In the embodiment described above, the student ID cd1 and the electronic papers p11 and p12 are overlapped and scanned by the electronic stapler. However, first, the student ID cd1 is scanned and the result is stored, then the electronic papers p11 and p12 are scanned within a certain period of time, and the student ID cd1 is scanned again within a certain period of time to write adjacent state information and the like. It is also possible to make it. In this case, the student ID cd1 does not need to have the electrode ec and does not need to be flat.

It is a system configuration figure of a first embodiment of the present invention. It is a figure which shows an example of the adjacent state information which each display apparatus obtains. It is an example of the adjacent state information which a management unit receives from each display apparatus. It is a figure which shows the example of the original image which should be displayed, and the example of the state of the division | segmentation. It is a system configuration figure of a second embodiment of the present invention. It is an example of the adjacent state which a management unit receives from each display apparatus. It is a conceptual diagram which shows the actual use condition of 3rd embodiment. It is detail drawing which shows the structure of one examination set. It is a block diagram of a database. 6 is a flowchart illustrating a method for generating a sheet-file correspondence list.

Explanation of symbols

D1, D2, D3, D4, D11, D12, D13 Display devices c1, c2, c3, c4, c11, c12, c13 Controllers i1a, i2a, i3a, i4a, i11a, i12a, i13a Infrared communication element mx management unit p11, p12 Electronic paper cd1 Student ID s Electronic stapler h Host computer db Database w Display data writing device

Claims (23)

A portable medium management system for managing a plurality of portable media to which identifiers for identifying each of the plurality of portable media are allocated, wherein the identifier is set between adjacent portable media for each of the plurality of portable media. Comprising an identifier transmission instruction means for instructing transmission in at least one direction;
Adjacent state transmission instructing that each of the plurality of portable media conveys the adjacent state information including the identifier of each portable medium and the identifier of the portable medium adjacent to each portable medium to the outside. With instruction means,
An adjacent state receiving means for receiving the adjacent state information transmitted from each portable medium;
A portable medium management system comprising: a list creation unit that creates a list of the plurality of portable media based on the neighboring state information received by the neighboring state reception unit.   The portable medium management system according to claim 1, further comprising an arrangement estimation unit that estimates an arrangement of the plurality of portable media based on adjacent state information received by the adjacent state reception unit.   The portable medium management system according to claim 1, wherein the adjacent state information includes an adjacent direction of the adjacent portable medium.   4. The portable medium management system according to claim 1, wherein at least one of the plurality of portable media has an installation direction detecting unit.   5. The portable medium management system according to claim 1, wherein the adjacent state information includes a detection result of the installation direction detection means.   6. The portable medium management system according to claim 1, further comprising data transmission means for transmitting data to each portable medium.   7. The portable medium management system according to claim 6, wherein the transmission data transmitted from the data transmission means is an image.   8. The transmission data determining means for determining the content of data to be sent to each portable medium based on the arrangement of the portable media obtained by the arrangement estimating means. A portable media management system according to claim 1.   10. The list according to claim 1, further comprising a list transmission means for transmitting at least a part of the list created by the list creation means to at least a part of the plurality of portable media. Transport media management system.   The portable medium according to any one of claims 1 to 9, further comprising an estimation result transmission unit configured to transmit at least a part of the estimation result obtained by the array estimation unit to at least a part of the plurality of portable media. Management system.   Each portable medium includes data selection means for selecting a necessary part from the transmission data based on at least a part of the estimation result transmitted by the estimation result transmission means. Item 11. The portable medium management system according to Item 10.   Each portable medium includes data requesting means for requesting necessary data based on at least a part of the estimation result transmitted by the estimation result transmitting means to the data sending means. Item 11. The portable medium management system according to Item 10.   The portable medium management system according to claim 6, wherein the identifier transmission instruction unit or the adjacent state transmission instruction unit uses non-contact communication.   14. The portable medium management system according to claim 1, wherein the identifier is an IP address.   15. The portable medium management system according to claim 1, wherein the IP address is based on IPv6.   In addition to the arrangement of the portable media, transmission data for determining the content of data to be sent to each portable medium based on the unique data recorded on at least one specific medium of the plurality of portable media The portable medium management system according to claim 8, further comprising a determination unit.   17. The portable medium management system according to claim 16, wherein a medium at a predetermined relative position among the plurality of portable media is selected as the specific medium.   18. The portable medium management system according to claim 17, wherein the relative position is a head position.   The portable medium management system according to claim 16, wherein a medium having a specific identifier among the plurality of portable media is selected as the specific medium.   The portable medium management system according to claim 16, wherein the specific medium is a student ID.   21. The portable medium management system according to claim 16, wherein the transmission data includes a test question.   The portable media management system according to any one of claims 1 to 21, wherein the plurality of portable media includes a display device.   23. The portable medium management system according to claim 22, wherein the display device is a particle movement type display device.

Images