JP7021481B2 - Shared terminals, communication systems, communication methods, and programs - Google Patents

Description

The present disclosure relates to shared terminals, communication systems, communication methods, and programs.

In recent years, electronic blackboards that can be shared by multiple users have been installed in rooms such as conference rooms of companies and classrooms of educational institutions. This electronic blackboard has a large touch panel type display, and displays a drawn image drawn by each user with a dedicated electronic pen or a finger. As a result, each user can proceed with meetings, classes, etc. while viewing the same drawn image (see Patent Document 1).

However, if the user accidentally presses the power switch when using a shared terminal such as an electronic blackboard, the power is turned off and the image data being drawn is deleted. On the other hand, if a function to restore (repair) and redisplay the image data is provided, since it is a common terminal, for example, when starting a later meeting or class, another user will re-display it. You can see the displayed image, which causes a security problem.

In order to solve the above-mentioned problems, the invention according to claim 1 can be turned off by shutting down by an operation on the screen, and can be turned on and off by operating a power switch. A shared terminal that displays an image that can be viewed by multiple users, and is a reception means that accepts power-on by operating the power switch, and after the power-on is accepted, the specific exclusive terminal from the specific exclusive terminal. Acquisition means for acquiring specific terminal identification information for identifying a terminal, predetermined terminal identification information for identifying a predetermined exclusive terminal, and predetermined user identification for identifying a user of a predetermined exclusive terminal. A transmission means that transmits a login authentication request together with specific terminal identification information acquired by the acquisition means to a terminal management server that associates and manages information, and the terminal management server based on the transmission by the transmission means. When the login is authenticated by determining whether the specific terminal identification information is managed and the login is successful, the authentication result including the information indicating the legitimacy sent from the terminal management server and the specific The receiving means for receiving the user identification information, the previous user identification information stored when the previous power was turned off by operating the power switch, and the specific user identification received by the receiving means. If the information is the same, the image that was displayed immediately before the previous power off is displayed again, and if the previous user identification information and the specific user identification information are not the same, the image is displayed again. It is a shared terminal characterized by having a display control means that does not redisplay the image that was displayed immediately before the previous power off.

According to the present invention, it is possible to redisplay image data and ensure security at the same time.

It is a schematic diagram of the communication system which concerns on this embodiment. It is a hardware configuration diagram of an electronic blackboard. It is a hardware block diagram of an IC card. It is a hardware configuration diagram of a smartphone. It is a hardware configuration diagram of a server and a PC. It is a hardware block diagram of the MFP. It is a hardware configuration diagram of a video conference terminal. This is an example of a screen displayed on the display of an electronic blackboard. This is an example of a screen displayed on the display of an electronic blackboard. This is an example of a screen displayed on the display of an electronic blackboard. It is a functional block diagram of a communication system. (A) is a conceptual diagram of the terminal management table, and (B) is a conceptual diagram of the destination management table. It is a sequence diagram which showed the login process. This is an example of a screen displayed on the display of an electronic blackboard. It is an image diagram which shows the state which a user uses an electronic blackboard. It is a flowchart which shows the process based on the authentication result at the time of login. It is a flowchart which shows the process of power-off.

The communication system 1 according to the present embodiment will be described in detail below with reference to the drawings.

<< Outline of system configuration >>
First, the outline of the configuration of the communication system 1 will be described. FIG. 1 is a schematic diagram of a communication system according to the present embodiment.

As shown in FIG. 1, the communication system 1 of the present embodiment has an electronic blackboard 2x, an electronic blackboard 2y, an IC (Integrated Circuit) card 3, a smartphone 4, a terminal management server 5, a destination management server 6, and a mail server. 7. It is constructed by a print server 8, an MFP (Multifunction Peripheral / Product / Printer) 9, a PC (Personal Computer) 10a, 10b, and a video conferencing terminal 13. In the following, any electronic blackboard among the electronic blackboard 2x and the electronic blackboard 2y will be referred to as "electronic blackboard 2". Further, any PC among the PCs 10a and 10b is represented as "PC10".

Further, the electronic blackboard 2, the terminal management server 5, the destination management server 6, the mail server 7, the print server 8, the MFP 9, the PC 10, and the video conference terminal 13 constituting the communication system 1 communicate with each other via the communication network 100. Can be done. The communication network 100 is constructed by the Internet, a mobile communication network, a LAN (Local Area Network), or the like. The communication network 100 may include not only wired communication but also wireless communication networks such as 3G (3rd Generation), WiMAX (Worldwide Interoperability for Microwave Access), and LTE (Long Term Evolution). Further, the electronic blackboard 2, the IC card 3 and the smartphone 4 can communicate with each other by short-range communication technology such as NFC (Near Field Communication) (registered trademark). Further, the smartphone 4 may communicate with the electronic blackboard 2 by a short-range communication technology such as Bluetooth (registered trademark).

Further, the electronic blackboard 2x and the electronic blackboard 2y can transmit and receive data of a drawn image (hereinafter, referred to as “drawn image data”) which is the content drawn by the user, respectively. Therefore, the content drawn on the electronic blackboard 2x is also displayed on the electronic blackboard 2y, and conversely, the content drawn on the electronic blackboard 2y is also displayed on the electronic blackboard 2x.

Further, the electronic blackboard 2 can create RPCS (Refined Printing Command Stream) format image data from the drawn image data and transmit it to the MFP 9 via the communication network 100. Further, the electronic blackboard 2 can create image data in PDF (Portable Document Format) format from the drawn image data, attach it to the e-mail, and then send the e-mail to the PC 10 via the communication network 100. As a result, the MFP 9 can print the drawn image, and the PC 10 can display the drawn image.

In addition, the electronic blackboard 2 can also display non-drawn images such as materials that have not been drawn by the user. Also in this case, the electronic blackboard 2 can create RPCS format image data from the non-drawing image data (hereinafter referred to as “non-drawing image data”) and transmit the image data to the MFP 9 via the communication network 100. Further, the electronic blackboard 2 can create image data in PDF format from non-drawing image data, attach it to an e-mail, and then send the e-mail to the PC 10 via the communication network 100.

The RPCS format image data and the PDF format image data are data related to the original drawn image or the original non-drawn image. Further, the electronic blackboard 2 is an example of a shared terminal, and a plurality of users can view (view) the same image at the same time. The IC card 3 and the smartphone 4 are examples of exclusive terminals. The MFP 9 is an example of a printing apparatus. The PC 10 is an example of a personal terminal. Further, not only the RPCS format but also the PCL (Printer Control Language) format, the PDL (Page Description Language) format, or the PS (PostScript) format may be used.

In FIG. 1, the user A owns the IC card 3 and brings the IC card 3 to a conference using the electronic blackboard 2. User B owns a smartphone 4 and brings the smartphone 4 to a conference using the electronic blackboard 2. The PC 10a is a personal computer owned by the user. The PC 10b is a PC owned by the user B. Further, the electronic blackboard 2 has a video conference function, and can hold a video and audio conference with the video conference terminal 13 via the communication network 100.

The terminal management server 5 manages a terminal ID (Identification) for identifying a dedicated terminal. The destination management server 6 manages the e-mail addresses of the PCs owned by each user. The mail server 7 manages the transmission and reception of e-mails via the communication network 100. The print server 8 is a server for realizing so-called "secure print", and temporarily stores data related to images (here, print data) transmitted from the electronic blackboard 2 or the PC 10, and requests from the MFP 9. Data related to the image is transmitted to the MFP 9 according to the above.

<< Hardware configuration >>
Subsequently, the hardware configuration of the device or terminal for constructing the communication system 1 will be described with reference to FIGS. 2 to 7.

<Hardware configuration of electronic blackboard>
FIG. 2 is a hardware configuration diagram of an electronic blackboard. As shown in FIG. 2, the electronic blackboard 2 includes a CPU (Central Processing Unit) 201, a ROM (Read Only Memory) 202, a RAM (Random Access Memory) 203, an SSD (Solid State Drive) 204, and a network I / It includes an F205 and an external device connection I / F (Interface) 206.

Of these, the CPU 201 controls the operation of the entire electronic blackboard 2. The ROM 202 stores a program used for driving the CPU 201 such as the CPU 201 and the IPL (Initial Program Loader). The RAM 203 is used as a work area of the CPU 201. The SSD 204 stores various data such as a program for an electronic blackboard. The network I / F 205 controls communication with the communication network 100. The external device connection I / F 206 controls communication with a USB (Universal Serial Bus) memory 2600 and an external device (camera 2900, speaker 2800, microphone 2700).

Further, the electronic blackboard 2 includes a capture device 211, a GPU 212, a display controller 213, a contact sensor 214, a sensor controller 215, an electronic pen controller 216, a short-range communication circuit 219, an antenna 219a of the short-range communication circuit 219, a power switch 222, and the like. It is equipped with selection switches 223.

Of these, the capture device 211 causes the display 508 of the PC 10 to display video information as a still image or a moving image. The capture device 211 and the PC 10 are connected by a cable. This cable may be a cable for analog RGB (VGA (Video Graphics Array)) signals, a cable for component video, HDMI (High-Definition Multimedia Interface) (registered trademark), and the like. It may be a cable for DVI (Digital Video Interactive), USB, or DisplayPort. The GPU (Graphics Processing Unit) 212 is a semiconductor chip that specializes in graphics. The display controller 213 controls and manages the screen display in order to output the output image from the GPU 212 to the display 220 or the like. The contact sensor 214 detects that the electronic pen 2500, the user's hand H, or the like touches the display 220. The sensor controller 215 controls the processing of the contact sensor 214. The contact sensor 214 inputs coordinates and detects coordinates by an infrared blocking method. In this method of inputting coordinates and detecting coordinates, two light receiving and emitting devices installed at both upper ends of the display 220 emit a plurality of infrared rays in parallel with the display 220 and are provided around the display 220. This is a method of receiving light that is reflected by a reflecting member and returns on the same optical path as the optical path of the light emitted by the light receiving element. The contact sensor 214 outputs an infrared ID emitted by two light receiving / receiving devices blocked by the object to the sensor controller 215, and the sensor controller 215 specifies a coordinate position which is a contact position of the object. The electronic pen controller 216 determines whether or not there is a touch of the pen tip or a touch of the pen tip on the display 220 by communicating with the electronic pen 2500. The short-range communication circuit 219 is a communication circuit such as NFC or Bluetooth. The power switch 222 is a switch for switching ON / OFF of the power of the electronic blackboard 2. The selection switches 223 are, for example, a group of switches for adjusting the brightness and hue of the display 220.

Further, the electronic blackboard 2 is provided with a bus line 210. The bus line 210 is an address bus, a data bus, or the like for electrically connecting each component such as the CPU 201 shown in FIG.

The contact sensor 214 is not limited to the infrared blocking method, but is a capacitive touch panel that specifies a contact position by detecting a change in capacitance, and a contact position is specified by a voltage change between two opposing resistance films. Various detection means such as a resistance film type touch panel and an electromagnetic induction type touch panel that detects the electromagnetic induction generated by the contact object touching the display unit and specifies the contact position may be used. Further, the electronic pen controller 216 may determine whether or not there is a touch not only on the pen tip and pen tail of the electronic pen 2500, but also on a portion held by the user of the electronic pen 2500 and other electronic pen portions.

<Hardware configuration of IC card>
FIG. 3 is a hardware configuration diagram of an IC card. Here, the non-contact type configuration will be described, but the contact type may be used. As shown in FIG. 3, the IC card 3 includes an IC chip and an antenna coil 330. Further, the IC chip 310 includes a CPU 311, ROM 312, RAM 313, EEPROM 314, and an antenna I / F 318.

Of these, the CPU 311 controls the operation of the entire IC card 3. The ROM 312 stores a program used to drive the CPU 311. The RAM 313 is used as a work area for the CPU 311. The EEPROM (Electrically Erasable and Programmable ROM) 314 stores various data such as a program for the IC card 3 and a terminal ID for identifying the IC card 3. The antenna I / F318 controls the transmission / reception of data with an external device via the antenna coil 330.

Further, the IC card 3 includes a bus line 320. The bus line 320 is an address bus, a data bus, or the like for electrically connecting each component such as the CPU 311 shown in FIG.

The antenna coil 330 is a coil for generating a current by receiving the magnetism when the IC card 3 passes through a magnetic field generated by an external device. By using this electricity, the IC card 3 activates the IC chip 310, communicates with a reader / writer of an external device, and can acquire and provide data.

<Smartphone hardware configuration>
FIG. 4 is a hardware configuration diagram of a smartphone. As shown in FIG. 4, the smartphone 4 includes a CPU 401, a ROM 402, a RAM 403, an EEPROM 404, a CMOS sensor 405, an acceleration / direction sensor 406, a media I / F 408, and a GPS receiving unit 409.

Of these, the CPU 401 controls the operation of the entire smartphone 4. The ROM 402 stores a program used to drive the CPU 401 such as the CPU 401 and IPL. The RAM 403 is used as a work area for the CPU 401. The EEPROM 404 reads or writes various data such as a smartphone program according to the control of the CPU 401. The CMOS (Complementary Metal Oxide Semiconductor) sensor 405 captures a subject (mainly a self-portrait) according to the control of the CPU 401 and obtains image data. The acceleration / orientation sensor 406 is a variety of sensors such as an electronic magnetic compass, a gyro compass, and an acceleration sensor that detect the geomagnetism. The media I / F 408 controls reading or writing (storage) of data to a recording medium 407 such as a flash memory. The GPS receiving unit 409 receives a GPS signal from a GPS satellite.

Further, the smartphone 4 includes a long-distance communication circuit 411, a camera 412, an image pickup element I / F 413, a microphone 414, a speaker 415, a sound input / output I / F 416, a display 417, an external device connection I / F 418, and a short-range communication circuit 419. It includes an antenna 419a of the short-range communication circuit 419 and a touch panel 421.

Of these, the telecommunications circuit 411 is a circuit that communicates with other devices via the communication network 100. The camera 412 is a kind of built-in imaging means for capturing an image of a subject and obtaining image data under the control of the CPU 401. The image sensor I / F 413 is a circuit that controls the drive of the camera 412. The microphone 414 is a kind of built-in sound collecting means for inputting voice. The sound input / output I / F 416 is a circuit that processes sound signal input / output between the microphone 414 and the speaker 415 under the control of the CPU 401. The display 417 is a kind of display means such as a liquid crystal display or an organic EL for displaying an image of a subject, various icons, and the like. The external device connection I / F418 is an interface for connecting various external devices. The short-range communication circuit 419 is a communication circuit such as NFC or Bluetooth. The touch panel 421 is a kind of input means for operating the smartphone 4 by the user pressing the display 417.

Further, the smartphone 4 is provided with a bus line 410. The bus line 410 is an address bus, a data bus, or the like for electrically connecting each component such as the CPU 401 shown in FIG.

<Hardware configuration of server and PC>
FIG. 5 is a hardware configuration diagram of a server and a PC. Since the terminal management server 5, the destination management server 6, the mail server 7, the print server 8 and the PCs 10a and 10b basically have the same hardware configuration, the hardware configuration of the terminal management server 5 will be described here. do. Further, in the following description, when the hardware configurations of the destination management server 6, the mail server 7, the print server 8 and the PCs 10a and 10b are described, each configuration shown in FIG. 5 will be described.

The terminal management server 5 is constructed by a computer, and as shown in FIG. 5, the CPU 501, ROM 502, RAM 503, HD 504, HDD (Hard Disk Drive) 505, recording media 506, media I / F 507, and display 508. , A network I / F 509, a keyboard 511, a mouse 512, a CD-ROM drive 514, and a bus line 510.

Of these, the CPU 501 controls the operation of the entire terminal management server 5. The ROM 502 stores a program used to drive the CPU 501 such as an IPL. The RAM 503 is used as a work area of the CPU 501. The HD504 stores various data such as programs. The HDD (Hard Disk Drive) 505 controls reading or writing of various data to the HD 504 according to the control of the CPU 501. The media I / F 507 controls reading or writing (storage) of data to a recording medium 506 such as a flash memory. The display 508 displays various information such as cursors, menus, windows, characters, or images. The network I / F 509 is an interface for performing data communication using the communication network 100. The keyboard 511 is a kind of input means including a plurality of keys for inputting characters, numerical values, various instructions, and the like. The mouse 512 is a kind of input means for selecting and executing various instructions, selecting a processing target, moving a cursor, and the like. The CD-ROM drive 514 controls reading or writing of various data to a CD-ROM (Compact Disc Read Only Memory) 513 as an example of a removable recording medium.

Further, the terminal management server 5 includes a bus line 510. The bus line 510 is an address bus, a data bus, or the like for electrically connecting each component such as the CPU 501 shown in FIG.

<Hardware configuration of MFP>
FIG. 6 is a hardware configuration diagram of the MFP. As shown in FIG. 6, the MFP 9 includes a controller 910, a short-range communication circuit 920, an engine control unit 930, an operation panel 940, and a network I / F 950.

Of these, the controller 910 is a CPU 901, a system memory (MEM-P) 902, a north bridge (NB) 903, a south bridge (SB) 904, an ASIC (Application Specific Integrated Circuit) 906, and a storage unit, which are the main parts of the computer. It has a local memory (MEM-C) 907, an HDD 908, and an HD 909 as a storage unit, and has a configuration in which the NB 903 and the ASIC 906 are connected by an AGP (Accelerated Graphics Port) bus 921.

Of these, the CPU 901 is a control unit that controls the entire MFP 9. The NB903 is a bridge for connecting the CPU901, the MEM-P902, the SB904, and the AGP bus 921, and includes a memory controller that controls reading and writing to the MEM-P902, a PCI (Peripheral Component Interconnect) master, and an AGP target. Has.

The MEM-P902 includes a ROM 902a that is a memory for storing programs and data that realizes each function of the controller 910, and a RAM 902b that is used as a memory for developing programs and data and a memory for drawing at the time of memory printing. The program stored in the RAM 902b is provided as a file in an installable format or an executable format by recording it on a computer-readable recording medium such as a CD-ROM, FD, CD-R, or DVD. It may be configured in.

The SB904 is a bridge for connecting the NB903 to a PCI device and a peripheral device. The ASIC 906 is an IC (Integrated Circuit) for image processing applications having hardware elements for image processing, and has a role of a bridge connecting the AGP bus 921, the PCI bus 922, the HDD 908, and the MEM-C907, respectively. This ASIC906 is a PCI target and an AGP master, an arbiter (ARB) that forms the core of the ASIC906, a memory controller that controls the MEM-C907, and a plurality of DMACs (Direct Memory Access Controllers) that rotate image data by hardware logic and the like. , And a PCI unit that transfers data between the scanner unit 931 and the printer unit 932 via the PCI bus 922. A USB (Universal Serial Bus) interface or an IEEE 1394 (Institute of Electrical and Electronics Engineers 1394) interface may be connected to the ASIC 906.

The MEM-C907 is a local memory used as a copy image buffer and a code buffer. The HD909 is a storage for accumulating image data, accumulating font data used at the time of printing, and accumulating forms. The HD909 controls reading or writing of data to the HD909 according to the control of the CPU 901. The AGP bus 921 is a bus interface for a graphics accelerator card proposed for accelerating graphic processing, and the graphics accelerator card can be accelerated by directly accessing the MEM-P902 with high throughput. ..

Further, the short-range communication circuit 920 includes a short-range communication circuit 920a. The short-range communication circuit 920 is a communication circuit such as NFC or Bluetooth.

Further, the engine control unit 930 is composed of a scanner unit 931 and a printer unit 932. Further, the operation panel 940 displays the current setting value, the selection screen, and the like, and sets the panel display unit 940a such as a touch panel that accepts the input from the operator, and the setting value of the condition related to image formation such as the density setting condition. It is provided with an operation panel 940b including a numeric keypad for receiving and a start key for receiving a copy start instruction. The controller 910 controls the entire MFP 9, for example, drawing, communication, input from the operation panel 940, and the like. The scanner unit 931 or the printer unit 932 includes an image processing portion such as error diffusion and gamma conversion.

The MFP 9 can sequentially switch and select the document box function, the copy function, the printer function, and the facsimile function by the application switching key of the operation panel 940. When the document box function is selected, the document box mode is set, when the copy function is selected, the copy mode is set, when the printer function is selected, the printer mode is set, and when the facsimile mode is selected, the facsimile mode is set.

Further, the network I / F950 is an interface for performing data communication using the communication network 100. The short-range communication circuit 920 and the network I / F 950 are electrically connected to the ASIC 906 via the PCI bus 922.

<Hardware configuration of video conference terminal>
FIG. 7 is a hardware configuration diagram of the video conference terminal according to the present embodiment. As shown in FIG. 7, the video conference terminal 13 includes a CPU 101, a ROM 102, a RAM 103, a flash memory 104, an SSD 105, a media I / F 107, an operation button 108, a power switch 109, a bus line 110, and a network I / F 111. The camera 112, the image pickup element I / F, the microphone 114, the speaker 115, the sound input / output I / F116, the display I / F117, the external device connection I / F118, the short-range communication circuit 119, and the antenna 119a of the short-range communication circuit 119 are provided. ing. Of these, the CPU 101 controls the operation of the entire video conference terminal 13. The ROM 102 stores a program used to drive the CPU 101 such as an IPL. The RAM 103 is used as a work area of the CPU 101. The flash memory 104 stores various data such as communication programs, image data, and sound data. The SSD 105 controls reading or writing of various data to the flash memory 104 according to the control of the CPU 101. An HDD may be used instead of the SSD. The media I / F 107 controls reading or writing (storage) of data to a recording medium 106 such as a flash memory. The operation button 108 is a button operated when selecting a destination of the video conference terminal 13. The power switch 109 is a switch for switching ON / OFF of the power of the video conference terminal 13.

Further, the network I / F 111 is an interface for performing data communication using a communication network 100 such as the Internet. The camera 112 is a kind of built-in imaging means for capturing an image of a subject and obtaining image data under the control of the CPU 101. The image sensor I / F 113 is a circuit that controls the drive of the camera 112. The microphone 114 is a kind of built-in sound collecting means for inputting voice. The sound input / output I / F 116 is a circuit that processes sound signal input / output between the microphone 114 and the speaker 115 under the control of the CPU 101. The display I / F 117 is a circuit that transmits image data to the external display 120 under the control of the CPU 101. The external device connection I / F 118 is an interface for connecting various external devices. The short-range communication circuit 119 is a communication circuit such as NFC or Bluetooth.

Further, the bus line 110 is an address bus, a data bus, or the like for electrically connecting each component such as the CPU 101 shown in FIG.

The display 120 is a kind of display means composed of a liquid crystal display or an organic EL for displaying an image of a subject, an operation icon, and the like. Further, the display 120 is connected to the display I / F 117 by the cable 120c. The cable 120c may be a cable for analog RGB (VGA) signals, a cable for component video, or a cable for HDMI® or DVI signals.

The camera 112 includes a lens and a solid-state image sensor that converts light into electric charges to digitize an image (video) of the subject, and as solid-state image sensors, CMOS (Complementary Metal Oxide Semiconductor) or CCD (Charge Coupled). Device) etc. are used. External device connection External devices such as an external camera, an external microphone, and an external speaker can be connected to the I / F 118 by a USB cable or the like. When an external camera is connected, the external camera is driven in preference to the built-in camera 112 according to the control of the CPU 101. Similarly, when an external microphone is connected or an external speaker is connected, the external microphone and the external speaker are given priority over the built-in microphone 114 and the built-in speaker 115 according to the control of the CPU 101. The external speaker is driven.

Further, the recording medium 106 has a structure that can be attached to and detached from the video conference terminal 13. Further, as long as it is a non-volatile memory that reads or writes data under the control of the CPU 101, not only the flash memory 104 but also an EEPROM or the like may be used.

<< Example of screen of electronic blackboard >>
A screen example of the electronic blackboard 2 will be described with reference to FIGS. 8 to 10. 8 to 10 are screen examples displayed on the display of the electronic blackboard. The electronic blackboard 2 displays a drawing screen 230 as shown in FIG. 8A on the display 220. An image image drawn by the user with an electronic pen 2500 or the like is displayed on the drawing screen 230. Further, a "menu" button 231 and an "end" button 237 are displayed at the lower right of the drawing screen 230. A "setting" button 233 is displayed at the lower left of the drawing screen 230.

The "menu" button 231 is a button pressed by the user when executing various functions of the electronic blackboard 2. The "setting" button 233 is a button for displaying the security setting screen 300 described later. The security setting screen 300 may be displayed on the PC 10 or the like instead of the display 220 of the electronic blackboard 2. In this case, the electronic blackboard 2 may be accessed from a web browser or the like of the PCs 10a and 10b connected to the communication network 100, and the security setting screen 300 may be displayed on the browser so that the settings can be made from the PCs 10a and 10b.

The "end" button 237 is a button pressed by the user when the user logs out and does not display the screen. Here, when the user presses the "menu" button 231 with the electronic pen 2500 or the like, the electronic blackboard 2 selects various functions on the drawing screen 230 as shown in FIG. 8 (B). The menu selection screen 232 for this is displayed.

As shown in FIG. 8B, the menu selection screen 232 has a "load" button 234, a "save" button 235, a "print" button 236, an "email send" button 237, and a "QR code" button. 239 is displayed.

Of these, the "read" button 234 is a button for the electronic blackboard 2 to read the drawn image data that has already been drawn and stored in the SSD 204 and display it on the display 220. The "save" button 235 is a button for the electronic blackboard 2 to save the drawn image drawn by the user in SSD 204 as drawn image data. The "print" button 236 is a button for printing the drawn image displayed on the drawing screen 230 of the electronic blackboard 2 by the MFP 9 or the like. The "send mail" button 237 is a button for the electronic blackboard 2 to attach the drawn image displayed on the drawing screen 230 to the e-mail as drawing image data and send it to the user's PC or the like. The "QR code" button 239 is a button for the electronic blackboard 2 to display a QR code representing a device ID for identifying the own device on the display 220.

Subsequently, the screen displayed by the electronic blackboard 2 when each of the buttons 234 to 237 and 239 is pressed will be described.

When the "read" button 234 is pressed by the user, the electronic blackboard 2 displays the folder selection screen 240 as shown in FIG. 9A on the display 220. On the folder selection screen 240, a plurality of folder icons for selecting a folder of files to be read are displayed. When the user selects a desired folder icon (for example, "folder 01") using the electronic pen 2500, the electronic blackboard 2 is displayed on the display 220, and the file selection screen 245 as shown in FIG. 9B is displayed. Is displayed. On the file selection screen 245, a plurality of file icons for selecting a file to be read are displayed. When the user selects a desired file icon using the electronic pen 2500, the electronic blackboard 2 causes the display 220 to display a drawing screen 230 including a drawing image related to the data of the selected file on the display 220.

When the "save" button 235 is pressed by the user, the electronic blackboard 2 displays the folder selection screen 250 shown in FIG. 9C on the display 220. On the folder selection screen 250, a plurality of folder icons for selecting a folder for files to be saved are displayed. The user can select a folder to save by selecting a desired folder icon using the electronic pen 2500.

When the "print" button 236 is pressed by the user, the electronic blackboard 2 causes the display 220 to display the print setting screen 260 shown in FIG. 9D. The printer name and various print parameters are displayed on the print setting screen 260. The printer name is displayed as the user name of the logged-in user. Further, various print parameters are displayed by the menus 261 to 264 for selecting color or black and white, selecting the paper size (A4, A3, etc.), selecting the printing surface (single-sided or double-sided), and selecting the increase / decrease in the number of copies. .. Further, on the print setting screen 260, a device name for specifying the printing device (here, “MFP9”) is displayed. Further, the print setting screen 260 displays a "print" button 267 that is pressed by the user when starting printing. Note that each screen of FIG. 9 displays "cancel" buttons 249, 259, and 269 for returning to the drawing screen 230 shown in FIG. 8 (A) from that screen.

When the "send mail" button 237 is pressed by the user A, the display control unit 24 of the electronic blackboard 2x displays the destination setting screen 270 shown in FIG. 10A on the display 220. On this destination setting screen 270, there is a "registered address book" tab 271 for displaying an already registered e-mail address, and a "direct input" for a user to directly input an e-mail address with an electronic pen 2500 or the like. Tab 272 is displayed. Here, the case where the "registered address book" tab 271 is selected is shown, and the registered address book field 273 including the registered e-mail address is displayed. Further, at the lower part of the registered address book field 273, an address setting field 274 for displaying an e-mail address indicating a destination to actually send an e-mail is provided. In the address setting field 274, the e-mail address of the logged-in user is displayed when the destination setting screen 270 is displayed. Here, the e-mail address (for example, "USER1 @ ...") sent by the user A logged in in step S19 described later is displayed. Further, on the destination setting screen 270, a "send" button 277 pressed by the user when starting the transmission of the e-mail is displayed.

As a screen that cannot be displayed by the user in general, but can be displayed by an administrator, a service engineer, or the like, the electronic blackboard 2 is displayed on the display 220 by the e-mail shown in FIG. 10 (B). The setting screen 280 can be displayed. The e-mail setting screen 280 displays a server address field 281, a port number field 282, a mail sender's address field 283, an authentication request field 284, an account field 285, and a password field 286.

Of these, the server address field 281 is a field in which the IP address of the mail server 7 is input. The port number field 282 is a field in which the port number opened by the mail server 7 for receiving e-mail is input. In the address field 283 of the mail sender, the mail address of the electronic blackboard 2 is set in advance assuming that the mail sender is the electronic blackboard 2. That is, the preset sender is not the user of the electronic blackboard 2 but the electronic blackboard 2. The authentication request column 284 is a column for setting whether or not to request authentication from the mail server 7. The account field 285 and the password field 286 are account information for the mail server 7 to authenticate the electronic blackboard 2 by SMTP (Send Mail Transfer Protocol).

When the "QR code" button 239 is pressed by the user, the electronic blackboard 2 displays the QR code display screen 290 shown in FIG. 10 (C) on the display 220. On the QR code display screen 290, a QR code 291 showing a device ID for identifying the electronic blackboard 2 (own device) is displayed. For example, the user can acquire the device ID of the electronic blackboard 2 by reading the QR code 291 using a QR code reading application such as a smartphone. On the QR code display screen 290, an "end" button 297 for returning from the QR code display screen 290 to the drawing screen 230 is displayed. On each of the screens of FIGS. 10 (A) and 10 (B), "Cancel" buttons 279 and 289 for returning to the drawing screen 230 shown in FIG. 8 (A) from the screen are displayed. ..

Further, as a screen that can be displayed by the user, the electronic blackboard 2 can display the security setting screen 300 shown in FIG. 10D on the display 220. The security setting screen 300 has a check box 301 for selecting whether to perform login authentication at startup, and a check box for selecting whether to restore (repair) and display (redisplay) the previous drawing image at startup. A pull-down menu 303 is provided for setting the time (restoration timeout time) during which the drawn image can be restored from the shutdown caused by turning off the power and 302. When the user checks or unchecks the check boxes 301 and 302 with the electronic pen 2500 or the like, selects a desired time from the pull-down menu 303, and then presses the "setting" button 307, the setting unit 27 is checked. Set the item and the selected time.

On the other hand, returning to FIG. 8A, when the user presses the “end” button 237 with the electronic pen 2500 or the like, the electronic blackboard 2 is displayed on the drawing screen 230 as shown in FIG. 8C. The end screen 238 for logging out and ending the display is displayed above.

As shown in FIG. 8C, the end screen 238 displays the "primary save and end" button 238a, the "end" button 238b, and the "cancel" button 238c.

Of these, the "primary save and end" button 238a is a button for primary saving the drawn image data and for logging out and ending the display. The "end" button 238b is a button for logging out and ending the display as it is. That is, the next time you log in, the drawn image data will not be displayed. The "Cancel" button 238c is a button for stopping the display of the end screen and returning to the original drawing screen 230 shown in FIG. 8 (A).

Each of the above IDs is an example of identification information. That is, the device ID is an example of device identification information. The terminal ID is an example of terminal identification information. The user ID is an example of user identification information. The device identification information and the terminal identification information also include a serial number. In addition, the user identification information includes an employee number, a driver's license number, my number in Japan's social security / tax number system, and the like.

Further, each of the above programs may be a file in an installable format or an executable format, and may be recorded and distributed on a computer-readable recording medium. Examples of recording media include CD-R (Compact Disc Recordable), DVD (Digital Versatile Disk), Blu-ray Disc, SD card and the like. In addition, the recording medium can be provided domestically or internationally as a program product.

Further, each server 5, 6, 7, 8 may be constructed by a single computer, or each unit (function, means, or storage unit) may be divided and constructed by a plurality of computers arbitrarily assigned. It may have been done.

<< Functional configuration of communication system >>
Subsequently, the functional configuration of the present embodiment will be described with reference to FIGS. 11 and 12. FIG. 11 is a functional block diagram of the communication system. In addition, in FIG. 11, among the terminals, devices, and servers shown in FIG. 1, those related to the processing or operation described later are shown.

<Functional configuration of electronic blackboard>
As shown in FIG. 11, the electronic blackboard 2 includes a transmission / reception unit 21, a reception unit 22, an image / sound processing unit 23, a display control unit 24, a judgment unit 25, a creation unit 26b, a creation unit 26a, and a setting unit 27. It has an acquisition / providing unit 28 and a storage / reading processing unit 29. Each of these parts has a function or a function realized by operating any of the components shown in FIG. 2 by a command from the CPU 201 according to a program for an electronic blackboard developed on the RAM 203 from the SSD 204. It is a means to do. Further, the electronic blackboard 2 has a storage unit 2000 constructed by the RAM 203 and the SSD 204 shown in FIG.

(Each functional configuration of the electronic blackboard)
Next, each component of the electronic blackboard 2 will be described. The transmission / reception unit 21 is realized by the command from the CPU 201 shown in FIG. 2, the network I / F205, and the external device connection I / F206, and is realized by the communication network 100 with other terminals, devices, or systems, and various data ( Or information) is sent and received.

The reception unit 22 is mainly realized by the command from the CPU 201 shown in FIG. 2, the contact sensor 214, and the electronic pen controller 216, and receives various inputs by the user.

The image / sound processing unit 23 is realized by a command from the CPU 201 shown in FIG. 2, and performs image processing on the image data obtained by the camera 2900 taking an image of the subject. Further, the image / sound processing unit 23 performs voice processing on the sound data related to the voice signal after the user's voice is converted into a voice signal by the microphone 2700. Further, the image / sound processing unit 23 outputs the audio signal related to the sound data to the speaker 2800, and outputs the audio from the speaker 2800. Further, the image / sound processing unit 23 performs a process of converting the drawn image data obtained by drawing on the display 220 with the electronic pen 2500 or the hand H by the user into coordinate data. For example, when the electronic blackboard 2x transmits coordinate data to the electronic blackboard 2y of another base, the electronic blackboard 2y displays the same drawing on the display 220 on the other electronic blackboard 2y side based on the coordinate data.

The display control unit 24 is realized by a command from the CPU 201 shown in FIG. 2 and a display controller 213 shown in FIG. 2, and causes the display 220 to display a drawn image.

The determination unit 25 is realized by the command from the CPU 201 shown in FIG. 2, and determines whether or not the terminal ID has been acquired from the IC card 3 or the smartphone 4.

Further, the creating unit 26a creates PDF format image data from the bitmap format drawing image data realized by the command from the CPU 201 shown in FIG. 2 and obtained by drawing by the user. Further, the creation unit 26b creates RPCS format image data from the bitmap format drawing image data realized by the command from the CPU 201 shown in FIG. 2 and obtained by drawing by the user. In addition to the RPCS format, the PDL format or the PS format may be used.

The setting unit 27 is realized by an instruction from the CPU 201 shown in FIG. 2, and for example, sets the sender and destination of the e-mail and sets the printer name of the print data.

The acquisition / provision unit 28 is executed by the instruction from the CPU 201 shown in FIG. 2 and the short-range communication circuit 219 and the antenna 219a, and the data is transmitted by the short-range communication with the IC card 3 or the smartphone 4. Acquire and provide.

The storage / reading processing unit 29 is executed by the instruction from the CPU 201 and SSD 204 shown in FIG. 2, and various data are stored in the storage unit 2000 or the recording medium 2100, or stored in the storage unit 2000 or the recording medium 2100. Performs processing such as reading various data. Further, the storage unit 2000 overwrites and stores the image data and the sound data received when communicating with another electronic blackboard or the video conference terminal every time it is received. Of these, the image is displayed on the display 220 by the image data before being overwritten, and the sound is output from the speaker 2800 by the sound data before being overwritten. The recording medium 2100 is realized by the USB memory 2600 shown in FIG.

<Functional configuration of IC card>
As shown in FIG. 11, the IC card 3 has an acquisition / providing unit 38 and a storage / reading processing unit 39. Each of these parts has a function or a function realized by operating any of the components shown in FIG. 2 by a command from the CPU 311 according to the IC card program developed from the EEPROM 314 to the RAM 313. It is a means to do. Further, the IC card 3 has a storage unit 3000 constructed by the RAM 313 and the EEPROM 314 shown in FIG.

(Each function configuration of IC card)
Next, each component of the IC card 3 will be described. The acquisition / provision unit 38 is executed by the command from the CPU 311 shown in FIG. 3 and the antenna coil 330, and acquires and provides data by short-range communication with the electronic blackboard 2.

The storage / reading processing unit 39 is executed by a command from the CPU 311 shown in FIG. 3, and performs a process of storing various data in the storage unit 3000 and reading out various data stored in the storage unit 3000. .. Further, the storage unit 3000 stores a terminal ID for identifying an IC card as an example of the exclusive terminal.

<Functional configuration of smartphone>
As shown in FIG. 11, the smartphone 4 has an acquisition / providing unit 48 and a storage / reading processing unit 49. Each of these parts has a function or functions realized by operating any of the components shown in FIG. 4 by a command from the CPU 401 according to a smartphone program developed on the RAM 403 from the EEPROM 404. It is a means. Further, the smartphone 4 has a storage unit 4000 constructed by the RAM 403 and the EEPROM 404 shown in FIG.

(Each function configuration of smartphone)
Next, each component of the smartphone 4 will be described. The acquisition / provision unit 48 is executed by the instruction from the CPU 401, the short-range communication circuit 419, and the antenna 419a shown in FIG. 4, and acquires and provides data by short-range communication with the electronic blackboard 2. Do it.

The storage / reading processing unit 49 is executed by a command from the CPU 401 shown in FIG. 4, and performs a process of storing various data in the storage unit 4000 and reading out various data stored in the storage unit 4000. .. The storage unit 4000 stores a terminal ID for identifying the smartphone 4 as an example of the exclusive terminal.

<Functional configuration of terminal management server>
The terminal management server 5 has a transmission / reception unit 51, an authentication unit 52, and a storage / reading processing unit 59. Each of these parts has a function or a function realized by operating any of the components shown in FIG. 5 by an instruction from the CPU 501 according to a terminal management program developed on the RAM 503 from the HD 504. It is a means. Further, the terminal management server 5 has a storage unit 5000 constructed by the HD 504 shown in FIG.

(Terminal management table)
FIG. 12A is a conceptual diagram showing a terminal management table. In the storage unit 5000, a terminal management DB 5001 configured by a terminal management table as shown in FIG. 12A is constructed. In this terminal management table, the user who is the owner of each exclusive terminal is identified for each terminal ID for identifying all the exclusive terminals (IC card 3, smartphone 4) managed by the terminal management server 5. The user ID and the user name are associated and managed.

(Each function configuration of the terminal management server)
Next, each functional configuration of the terminal management server 5 will be described in detail. In the following, in explaining each functional configuration of the terminal management server 5, among the constituent elements shown in FIG. 5, the main constituent elements for realizing each functional configuration of the terminal management server 5 are used. The relationship is also explained.

The transmission / reception unit 51 of the terminal management server 5 shown in FIG. 11 is realized by the command from the CPU 501 shown in FIG. 5 and the network I / F 509 shown in FIG. 5, and is realized via the communication network 100. Sends and receives various data (or information) to and from other terminals, devices, or systems.

The authentication unit 52 is realized by a command from the CPU 501 shown in FIG. 5, and the terminal ID sent from the electronic blackboard 2 is a user's exclusive terminal (IC card 3, smartphone 4) registered in advance. Judge if it is.

The storage / reading processing unit 59 is realized by the command from the CPU 501 shown in FIG. 5 and the HDD 505 shown in FIG. 5, and various data are stored in the storage unit 5000 or stored in the storage unit 5000. Performs processing such as reading various data.

<Functional configuration of destination management server>
The destination management server 6 has a transmission / reception unit 61 and a storage / reading processing unit 69. Each of these parts has a function or a function realized by operating any of the components shown in FIG. 11 by an instruction from the CPU 501 according to a destination management program developed on the RAM 503 from the HD 504. It is a means. Further, the destination management server 6 has a storage unit 6000 constructed by the HD 504 shown in FIG.

(Destination management table)
FIG. 12B is a conceptual diagram showing a destination management table. In the storage unit 6000, a destination management DB 6001 configured by a destination management table as shown in FIG. 12B is constructed. In this destination management table, the e-mail address of each user's PC 10 is associated and managed with each user ID for identifying all the users managed by the destination management server 6.

(Each function configuration of the destination management server)
Next, each functional configuration of the destination management server 6 will be described in detail. In the following, in explaining each functional configuration of the destination management server 6, among the components shown in FIG. 5, the main components for realizing each functional configuration of the destination management server 6 are used. The relationship is also explained.

The transmission / reception unit 61 of the destination management server 6 shown in FIG. 11 is realized by the command from the CPU 501 shown in FIG. 5 and the network I / F 509 shown in FIG. 5, and is realized via the communication network 100. Sends and receives various data (or information) to and from other terminals, devices, or systems.

The storage / reading processing unit 69 is realized by the command from the CPU 501 shown in FIG. 5 and the HDD 505 shown in FIG. 5, and various data are stored in the storage unit 6000 or stored in the storage unit 6000. Performs processing such as reading various data.

<Functional configuration of mail server>
The mail server 7 has a transmission / reception unit 71 and a storage / reading processing unit 79. Each of these parts has a function or a function realized by operating any of the components shown in FIG. 11 by an instruction from the CPU 501 according to a destination management program developed on the RAM 503 from the HD 504. It is a means. Further, the mail server 7 has a storage unit 7000 constructed by the HD 504 shown in FIG.

(Each function configuration of the mail server)
Next, each functional configuration of the mail server 7 will be described in detail. In the following, in explaining each functional configuration of the mail server 7, among the constituent elements shown in FIG. 5, the relationship with the main constituent elements for realizing each functional configuration of the mail server 7 is also included. explain.

The transmission / reception unit 71 of the mail server 7 shown in FIG. 11 is realized by the command from the CPU 501 shown in FIG. 5 and the network I / F 509 shown in FIG. 5, and is realized via the communication network 100. Sends and receives various data (or information) to and from other terminals, devices, or systems.

The storage / reading processing unit 79 is realized by the command from the CPU 501 shown in FIG. 5 and the HDD 505 shown in FIG. 5, and various data are stored in the storage unit 7000 or stored in the storage unit 7000. Performs processing such as reading various data.

<Functional configuration of print server>
The print server 8 has a transmission / reception unit 81 and a storage / reading processing unit 89. Each of these parts functions or functions to be realized by operating any of the components shown in FIG. 11 by a command from the CPU 501 according to a print management program developed from the HD 504 on the RAM 503. It is a means. Further, the print server 8 has a storage unit 8000 constructed by the HD 504 shown in FIG. The storage unit 8000 stores data (here, print data) related to the image sent from the electronic blackboard 2 or the like.

(Print data management table)
FIG. 12C is a conceptual diagram showing a print data management table. In the storage unit 8000, a print data management DB 8001 configured by a print data management table as shown in FIG. 12C is constructed. In this print data management table, a user name for identifying a user who is the owner of each proprietary terminal, a file name of data related to an image for the user to print (here, print data), and printing. Configuration parameters are associated and managed.

(Each function configuration of the print server)
Next, each functional configuration of the print server 8 will be described in detail. In the following, in explaining each functional configuration of the print server 8, among the constituent elements shown in FIG. 5, the relationship with the main constituent elements for realizing each functional configuration of the print server 8 is also included. explain.

The transmission / reception unit 81 of the print server 8 shown in FIG. 11 is realized by the command from the CPU 501 shown in FIG. 5 and the network I / F 509 shown in FIG. 5, and is realized via the communication network 100. Sends and receives various data (or information) to and from other terminals, devices, or systems.

The storage / reading processing unit 89 is realized by the command from the CPU 501 shown in FIG. 5 and the HDD 505 shown in FIG. 5, and various data are stored in the storage unit 8000 or stored in the storage unit 8000. Performs processing such as reading various data.

<Functional configuration of MFP>
As shown in FIG. 11, the MFP 9 has a transmission / reception unit 91, a reception unit 92, a printing unit 93, a display control unit 94, a determination unit 95, an acquisition / provision unit 98, and a storage / reading processing unit 89. ing. Each of these parts is a function or a functioning means realized by operating any of the components shown in FIG. 5 by a command from the CPU 901 according to a printing program developed on the RAM 902b. .. Further, the MFP 9 has a storage unit 9000 constructed by the HD 504 shown in FIG.

(Each function configuration of MFP)
Next, each functional configuration of the MFP 9 will be described in detail. In the following, in explaining each functional configuration of the MFP 9, among the constituent elements shown in FIG. 6, the relationship with the main constituent elements for realizing each functional configuration of the MFP 9 will also be described.

The transmission / reception unit 91 of the MFP 9 shown in FIG. 11 is realized mainly by the command from the CPU 901 shown in FIG. 6 and the network I / F950 shown in FIG. 6, and is realized via the communication network 100. Sends and receives various data (or information) to and from other terminals, devices, or systems.

The reception unit 92 is mainly realized by the command from the CPU 901 shown in FIG. 6 and the operation panel 940, and receives various inputs by the user.

The print unit 93 is mainly realized by the command from the CPU 901 shown in FIG. 6 and the printer unit 932, and prints data (print data) related to the image.

The display control unit 94 is mainly realized by the command from the CPU 901 shown in FIG. 6 and the operation panel 940, and displays print setting parameters such as color printing or black-and-white printing at the time of copy processing.

The determination unit 95 is mainly realized by the command from the CPU 901 shown in FIG. 6, and for example, whether the authentication result sent from the terminal management server 5 is a legitimate IC card (terminal ID). to decide.

The acquisition / providing unit 98 is executed by the instruction from the CPU 901 shown in FIG. 6 and the short-range communication circuit 920 and the antenna 220a, and the data is transmitted by the short-range communication with the IC card 3 or the smartphone 4. Acquire and provide.

The storage / reading processing unit 99 is executed by the instruction from the CPU 901 and the HDD 908 shown in FIG. 6, and is a process of storing various data in the storage unit 9000 and reading out various data stored in the storage unit 9000. I do.
Accepts various inputs by users.

<PC function configuration>
As shown in FIG. 11, the PC 10 has a transmission / reception unit 11, a reception unit 12, a display control unit 14, and a storage / reading processing unit 19. Each of these parts has a function or a functioning means realized by operating any of the components shown in FIG. 5 by an instruction from the CPU 501 according to a terminal program developed on the RAM 503 from the HD 504. Is. Further, the PC 10 has a storage unit 1000 constructed by the HD 504 shown in FIG.

(Each function configuration of PC)
Next, each component of the PC 10 will be described. The transmission / reception unit 11 of the PC 10 shown in FIG. 11 is realized by the command from the CPU 501 shown in FIG. 5 and the network I / F 509 shown in FIG. 5, and is realized by another communication network 100 via the communication network 100. Sends and receives various data (or information) to and from the terminal, device, or system.

The reception unit 12 is mainly realized by the command from the CPU 501 shown in FIG. 5, the keyboard 511, and the mouse 512, and receives various inputs by the user.

The display control unit 14 is realized by a command from the CPU 501 shown in FIG. 5, and causes the display 508 to display a drawn image or the like.

The storage / reading processing unit 19 is executed by the instruction from the CPU 501 and the HDD 505 shown in FIG. 5, and various data are stored in the storage unit 1000 or the recording medium 1100, or stored in the storage unit 1000 or the recording medium 1100. Performs processing such as reading various data. The recording medium 1100 is realized by the recording medium 506 shown in FIG.

<< Processing or operation of the embodiment >>
Hereinafter, the processing or operation of each embodiment will be described. Here, in FIG. 1, in the case where users A and B are having a meeting using the electronic blackboard 2x in a certain conference room, the user A is shown in FIG. 15 during drawing after the login process. A case where the power switch 222 is accidentally pressed when the hand is brought close to the selection switches 223 to press the selection switches 223 will be described. The selection switches 223 include switches for switching the input I / F from the PC 10 to the capture device 211. This input I / F is, for example, VGA, HDMI, DVI, USB (3.0 or later) DisplayPort.

<Login process>
First, the login process performed by the user A on the electronic blackboard 2x will be described with reference to FIGS. 13 to 16. FIG. 13 is a sequence diagram showing the login process. FIG. 14 is an example of a screen displayed on the display of the electronic blackboard. FIG. 15 is an image diagram showing a state in which a user uses an electronic blackboard.

As shown in FIG. 15, power switches 222 and selection switches 223 are provided in a row in the vertical direction on the side surface of the housing of the display 220 at the top of the electronic blackboard 2x. The reason why they are lined up in this way is due to the specifications of the manufacturer of the display 220. Therefore, when the manufacturer of the electronic blackboard 2 purchases the display 220 from the manufacturer of the display 220, the power switch 222 is lined up with the selection switches 223 on the same surface of the housing of the display 220, and the selection switches are arranged. It is provided in the vicinity of 223. Further, a short-range communication unit 221 is provided at the lower right of the display 220, and when the user approaches the dedicated terminal of the IC card 3 or the smartphone 4, the acquisition / provision unit 28 shown in FIG. 11 is displayed. , The terminal ID can be acquired from the exclusive terminal.

Here, when the user A presses the power switch 222 of the electronic blackboard 2x in order to start the conference, it is determined whether the determination unit 25 is set to perform login authentication at startup by the setting unit 27 (step S10). ). If the determination unit 25 determines that it has not been set, it proceeds to the process of step S21 described later, but if it determines that it has been set, it proceeds to step S11. Here, the case where the determination unit 25 determines that the setting has been made will continue to be described.

The display control unit 24 displays the login screen 170 on the display 220 as shown in FIG. 14 (A) (step S11). Next, as shown in FIG. 15, when the user A brings his / her IC card 3 close to (holds) the short-range communication unit 221 of the electronic blackboard 2x, the acquisition / provision unit of the electronic blackboard 2x 28 acquires the terminal ID of the IC card from the acquisition / providing unit 38 of the IC card 3 (step S12). Then, the transmission / reception unit 21 of the electronic blackboard 2x transmits a login authentication request to the terminal management server 5 (step S13). The login authentication request includes the terminal ID acquired in step S12. As a result, the transmission / reception unit 51 of the terminal management server 5 receives the login authentication request.

Next, the authentication unit 52 of the terminal management server 5 performs login authentication of the IC card 3 using the terminal ID (step S14). Specifically, the storage / reading processing unit 59 searches for a user ID corresponding to the terminal ID in the terminal management table (see FIG. 12A) using the terminal ID received in step S13 as a search key. .. If there is a corresponding user ID, the authentication unit 52 determines that it is a legitimate IC card (terminal ID). If there is no corresponding user ID, the authentication unit 52 determines that the IC card (terminal ID) is not valid.

Next, the transmission / reception unit 51 of the terminal management server 5 transmits the authentication result to the electronic blackboard 2x (step S15). When the authentication unit 52 determines that the IC card is legitimate, the authentication result includes information indicating legitimacy, a user ID, and a user name. Further, when the authentication unit 52 determines that the IC card is not legitimate, the authentication result includes information indicating that the card is not legitimate. As a result, the transmission / reception unit 21 of the electronic blackboard 2x receives the authentication result.

Next, the electronic blackboard 2x performs a process based on the authentication result (step S16). Here, the process based on the authentication result in step S16 will be described in detail with reference to FIG. FIG. 16 is a flowchart showing processing based on the authentication result when logging in.

As shown in FIG. 16, the determination unit 25 is information indicating that the authentication result received in step S15 is valid (that is, is the terminal ID transmitted in step S13 valid? ) Is determined (step S16-1). Then, when the determination unit 25 determines that the information is not valid, that is, when it is determined that the login has failed (NO), the display control unit 24 displays FIG. 14 (B) on the display 220. The error screen 180 is displayed as shown in (Step S16-2). Further, when the judgment unit 25 determines that the information is valid, that is, when it is determined that the login is successful (YES), the determination unit 25 further turns off the power of the previous electronic blackboard 2x. Is due to the operation of the power switch (step S16-3). Then, when the determination unit 25 determines that the power switch 222 is operated (YES), it further determines whether the display (restoration of the image) is set (step S16-4). Then, when it is determined that the determination unit 25 has set the redisplay (YES), the storage / reading processing unit 29 reads out the user ID stored and held in the storage unit 2000. (Step S16-5).

Next, the determination unit 25 determines whether the user ID (previous user ID) read in step S16-5 and the specific user ID received in step S15 are the same (step). S16-6). If the determination unit 25 determines that they are the same (YES), the storage / reading processing unit 29 is turned off from the storage unit 2000 by operating the drawing image data to be redisplayed and the power switch 222. Read the previous previously received e-mail address (step S16-7). Then, the display control unit 24 redisplays the image related to the previous image data on the display 220 (step S16-8). As a result, the power switch 222 is provided in the vicinity of the selection switches 223, and even if there is a high possibility that the user accidentally presses the power switch 222, the drawing data being drawn can be redisplayed. Therefore, it is possible to prevent each user from being confused by the interruption of the conference or the like.

On the other hand, in step S16-3, the determination unit 25 determines that the previous power off was not due to the operation of the power switch 222, that is, the "temporarily save and exit" button 238a or "end" shown in FIG. 8C. When it is determined that the power is turned off by shutting down by pressing the button 238b (NO), the process is normally completed, and the process proceeds to step S17 described later. If it is determined in step S16-4 that the determination unit 25 has not set the redisplay (restoration of the image) (NO), the process proceeds to step S17 described later. Further, in step S16-6, if the determination unit 25 determines that the read user ID and the received user ID are not the same (NO), the process proceeds to step S17 described later.

Hereafter, the explanation will be continued as to the case where it is legitimate. The transmission / reception unit 21 of the electronic blackboard 2x transmits a request for an e-mail address to the destination management server 6 (step S17). This request includes the user ID received in step S15. As a result, the transmission / reception unit 61 of the destination management server 6 receives the request for the e-mail address.

Next, in the destination management server 6, the storage / reading processing unit 69 responds by searching the destination management table (see FIG. 12B) using the user ID received in step S17 as a search key. Read the e-mail address (step S18). Then, the transmission / reception unit 61 transmits the request result to the electronic blackboard 2x (step S19). The request result includes the email address read in step S18. As a result, the transmission / reception unit 21 of the electronic blackboard 2x receives the request result.

Next, the setting unit 27 of the electronic blackboard 2x sets the sender and destination of the e-mail (step S20). As a result, when the display control unit 24 displays the e-mail setting screen 280 shown in FIG. 10 (B), the user who logs in from the e-mail address of the electronic blackboard 2 in the e-mail address field 283 of the sender. Switch to and display the email address of. Further, when the display control unit 24 displays the e-mail setting screen 280 shown in FIG. 10A, the e-mail address of the logged-in user is displayed in the address setting field 274.

Next, the display control unit 24 is based on a ticker indicating that drawing of "Welcome, Mr. Kato" or the like can be started on the display 220 as shown in FIG. 14 (C). Display. As the character of "Kato", the user name received in step S15 is used. As described above, the users A and B can draw on the electronic blackboard 2x.

<Power off processing>
Next, the power-off process performed by the user A on the electronic blackboard 2x will be described with reference to FIGS. 15 and 17. FIG. 17 is a flowchart showing the power off process.

When user A stretched his arm to press the selection switches 223 provided on the side surface of the housing of the electronic blackboard 2x during drawing as shown in FIG. 8A at the conference, he erroneously extended his arm. When the power switch 222 is pressed, the reception unit 22 accepts the power off (step S31).

Next, the determination unit 25 determines whether the power off this time is due to the operation of the power switch 222 (step S32). Then, when the determination unit 25 determines that the power switch 222 is operated (YES), it further determines whether the login authentication is set (step S33). Then, when the determination unit 25 determines that login authentication is set (YES), it further determines whether redisplay (image restoration) is set (step S34). Then, when the determination unit 25 determines that the redisplay is set (YES), the storage / reading processing unit 29 tells the storage unit 2000 that the user ID acquired in step S12 is being drawn. The drawn image data and the e-mail address of the user A received in step S19 are stored (saved) (step S35). Finally, the power is turned off (step 36). Since the storage unit 2000 is constructed of a non-volatile memory that does not erase the stored contents even when the power is turned off, the user ID, the drawn image data, and the e-mail address are retained even when the power is turned off. ing.

On the other hand, in step S32, the determination unit 25 is not operated by the power switch 222, that is, by pressing the "temporarily save and exit" button 238a or the "end" button 238b shown in FIG. 8C. If it is determined that the power is turned off by shutting down by the operation on the screen (NO), the process proceeds to step S36 without storing the user ID and the like, and the power is turned off. Further, even when the determination unit 25 determines in step S33 that login authentication is not set (NO), the user ID and the like are not stored and the process proceeds to step S36, and the power is turned off. Further, even if the determination unit 25 determines in step S34 that the redisplay (image restoration) is not set (NO), the user ID and the like are not stored and the process proceeds to step S36. The power is turned off.

When the reception unit 22 receives the power off in step S31, the process of step 35 may be omitted by omitting one of the processes of steps S31 to S34.

<< Main effects of the embodiment >>
As described above, according to the present embodiment, even if it is a shared terminal such as an electronic blackboard 2x that can be shared by a plurality of users, the terminal such as an IC card used for login is exclusively used. This has the effect of ensuring security.

Further, the display control unit 24 is used when the previous user ID stored when the previous power off was performed by the operation of the power switch 222 and the received specific user ID are the same. (See S16-3, YES; S16-6, YES) redisplays the image that was displayed immediately before the previous power off (see S16-8), and the previous user ID and specific user ID. If is not the same as (see S16-6, NO), the image displayed immediately before the previous power off is not displayed again (see S17). As a result, for example, even if the user A intends to press the selection switches 223 while drawing, but accidentally presses the power switch 222 to turn off the power, the electronic blackboard 2x is pressed again. If the IC card 3 is activated and brought close to the IC card 3, the image being drawn can be displayed again. Furthermore, even if user C, who was not logged in last time, activates the electronic blackboard 2x and brings his own IC card or other proprietary terminal close to him, the previous image is not displayed again, so he logged in last time. If the user A is used, there is no concern that another user C can see the drawn image. As a result, it is possible to redisplay the image data and ensure security at the same time.

1 Communication system 2x electronic blackboard (an example of a shared terminal)
2y electronic blackboard (an example of a shared terminal)
3 IC card (an example of a dedicated terminal)
4 Smartphone (example of exclusive terminal)
5 Terminal management server 6 Destination management server 7 Mail server 8 Print server 11a PC (example of personal terminal)
11 PC (an example of a personal terminal)
12 MFP (an example of a printing device)
13 Video conference terminal 21 Transmission / reception unit (example of transmission means, example of reception means)
22 Reception unit 23 Image / sound processing unit 24 Display control unit (example of display control means)
25 Judgment unit (an example of judgment means)
27 Setting unit (example of setting means)
26a Creation unit (an example of the first creation means)
26b Creation unit (an example of the second creation means)
28 Acquisition / Provision Department (Example of acquisition means)
29 Storage / reading processing unit 51 Transmission / reception unit 52 Authentication unit 59 Storage / reading processing unit 61 Transmission / reception unit 69 Storage / reading processing unit 5001 Terminal management DB
6001 Destination management DB
8001 Print data management DB
100 communication network

Japanese Unexamined Patent Publication No. 2001-292266

Claims (12)

It is a shared terminal that can be turned off by shutting down by operating on the screen, can be turned on and off by operating the power switch, and displays images that can be viewed by multiple users. hand,
A reception means that accepts power on by operating the power switch,
After the power-on is accepted, the acquisition means for acquiring the specific terminal identification information for identifying the specific exclusive terminal from the specific exclusive terminal, and the acquisition means.
Acquired by the acquisition means for a terminal management server that manages a predetermined terminal identification information for identifying a predetermined exclusive terminal and a predetermined user identification information for identifying a user of the predetermined exclusive terminal in association with each other. A means of sending a login authentication request with the specific terminal identification information provided, and
When the terminal management server determines whether the specific terminal identification information is managed based on the transmission by the transmission means to perform login authentication and the login is successful, the legitimacy transmitted from the terminal management server. A receiving means for receiving an authentication result including information indicating that the above is true and specific user identification information, and a receiving means.
If the previous user identification information stored when the previous power off was performed by operating the power switch and the specific user identification information received by the receiving means are the same, the previous time. The image displayed immediately before the power was turned off was redisplayed, and if the previous user identification information and the specific user identification information were not the same, the image was displayed immediately before the previous power off. Display control means that does not redisplay the image,
A shared terminal characterized by having. The shared terminal according to claim 1, wherein the power switch is provided on the same surface in the housing of the shared terminal provided with a selection switch for performing a selection operation on the screen. The shared terminal according to claim 2, wherein the power switch and the selection switch are provided side by side. The shared terminal according to any one of claims 1 to 3.
Judgment to determine whether the previous user identification information stored when the previous power off was performed by operating the power switch and the specific user identification information received by the receiving means are the same. A shared terminal characterized by having means. The shared terminal according to any one of claims 1 to 4.
It has a setting means for setting the presence / absence of the login authentication.
When the power switch is operated, when the setting means is set to perform the login authentication, the transmitting means is the specific terminal identification information acquired by the acquisition means as a request for the login authentication. To the terminal management server
When the power switch is operated, if the setting unit does not set the login authentication, the display control means does not redisplay the image displayed immediately before the previous power off. A shared terminal that features it. The setting means further sets whether or not to execute the redisplay.
The setting means performs the setting for performing the login authentication and the setting for executing the redisplay, and the previous user identification information stored when the previous power off was performed by operating the power switch. When the specific user identification information received by the receiving means is the same, the display controlling means redisplays the image displayed immediately before the previous power off .
When the setting means makes the setting for performing the login authentication and the setting for not executing the redisplay, even if the previous power off is performed by the operation of the power switch. The shared terminal according to claim 5, wherein the display control means does not redisplay the image displayed immediately before the previous power off. When the receiving means receives the power off by the operation of the power switch when the setting means is set to execute the redisplay, the specific user identification information is used in the previous time. The shared terminal according to claim 6, further comprising a storage means that stores the memory as user identification information and retains the memory even when the power is turned off. The shared terminal according to any one of claims 1 to 7.
With the terminal management server
A communication system characterized by having. The communication system according to claim 8 is a communication system having the exclusive terminal. The communication system according to claim 9, wherein the exclusive terminal is an IC card or a smartphone. It is possible to turn off the power by shutting down by operating on the screen, it is possible to turn on and off the power by operating the power switch, and a shared terminal that displays images that can be viewed by multiple users is executed. It is a display control method to be performed.
A reception step that accepts power on by operating the power switch,
After the power-on is accepted, the acquisition step of acquiring the specific terminal identification information for identifying the specific exclusive terminal from the specific exclusive terminal, and the acquisition step.
Acquired by the acquisition step for the terminal management server that manages the predetermined terminal identification information for identifying the predetermined exclusive terminal and the predetermined user identification information for identifying the user of the predetermined exclusive terminal in association with each other. A sending step to send a login authentication request with the specific terminal identification information
When login authentication is performed and login is successful by determining whether the terminal management server manages the specific terminal identification information based on the transmission by the transmission step, the legitimacy transmitted from the terminal management server is performed. A receiving step to receive an authentication result and specific user identification information including information indicating that
If the previous user identification information stored when the previous power off was performed by operating the power switch and the specific user identification information received by the reception step are the same, the previous time. The image displayed immediately before the power was turned off was redisplayed, and if the previous user identification information and the specific user identification information were not the same, the image was displayed immediately before the previous power off. A display control step that does not redisplay the image, and
A shared terminal characterized by running. A program for realizing each means according to any one of claims 1 to 7 on a computer.

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