JP4356428B2 - Display system and remote file display method - Google Patents

Description

  The present invention relates to a system and method for reading a file stored in a remote computer or storage device and displaying the file on a nearby display.

  Conventionally, when a user makes an access request to the information server via the portable device, receives and displays the title list, and then when the user makes a connection request to the projector via the portable device, the projector A program for control is transmitted to the mobile device, the user selects a document to be displayed on the projector from the title list, is acquired from the information server, is transmitted to the projector, and the document is controlled by the program. Is displayed on the projector (see Patent Document 1).

Japanese Patent Laid-Open No. 2002-244630

  In the conventional technology, since transmission / reception is performed via a portable device, it is restricted by the functions of the portable device and the network environment (line speed, etc.) around the portable device, so it takes a long time to transmit / receive large amounts of data. There is a problem in terms of ease of use for users. Further, in the conventional technique, no consideration is given to the case where a plurality of users use the same display at the same time. Furthermore, since the conventional technology does not consider the case where there are a plurality of projectors, there is a possibility that the document from the information server cannot be transferred to the intended projector. Further, in the conventional technology, since the access authority of the projector is not taken into consideration, there is a possibility that a person without the access authority may use the projector.

  An object of the present invention is to provide a system that improves user convenience.

  The objective of this invention is providing the system which suppresses the display defect (when it cannot display etc.) when a some display exists.

  Moreover, the objective of this invention is providing the system which suppresses the unauthorized use of a display.

  A display station that integrates a large screen and a computer, where multiple conference participants can be seen simultaneously, is prepared and used as a shared display for the conference. Attendees with a portable terminal such as a mobile phone gather around the display station for a conference. There are a plurality of display stations, each display station is connected to a network, and an identifier for identifying each display station is allocated.

  The display station has a communication function, a function that issues and manages a license that permits the use of the screen when requested to use the screen via the communication function, and a license when the license and display data are received. A function for confirming whether the license is correct and a function for displaying the display data on the screen if the license is correct are provided.

  The mobile terminal has a function for requesting the use of the display station, a function for storing a license when a license is issued from the display station, and a remote computer for remote display to select display data. A function of requesting transmission to the display station and sending a license is provided.

  The remote computer is provided with a function of transmitting display data and a license to the display station in response to a transmission request from the portable terminal to the display station.

  With the above functions, it is possible to display remote materials on the display station by using the portable terminal like a remote controller.

  By providing the display station with a license issuance and management function, and a function for receiving and displaying display data after confirming the license, data can be stored even if the display requesting terminal and the data transmission source terminal are different. It is possible to display. Furthermore, since it becomes possible to reject display requests without a license, such as when the destination is specified incorrectly, security is ensured, and control of the display position, size, and display deadline is also licensed. Can be managed using. By applying encryption technology to the license, it is possible to add a strong security function.

  Providing a meeting system suitable for new office environments such as shared space and free location, because it is possible to hold meetings smoothly even on business trips by carrying a mobile terminal without carrying a laptop PC or data. Can do.

  According to the present invention, since the file is transmitted from the fail server to the display server or the display, it is not necessary to enhance the function of the terminal, and it is not necessary to enhance the network environment around the terminal.

  According to the present invention, it is possible to suppress display defects when there are a plurality of displays, and it is possible to suppress unauthorized use of displays.

  According to the present invention, since a remote material can be displayed on a nearby display, it is possible to smoothly hold a meeting even on a business trip by carrying a portable terminal without carrying a notebook PC or data. There is an effect. In addition, there is an effect that it is possible to provide a conference system suitable for a new office environment such as a shared space and a free location. Furthermore, when a display station issues a license, a public key is issued, the file is encrypted using the key, and the file is encrypted with a composite key owned by the display station, so that the file can be sent and received more securely. There is also an effect of becoming.

  An embodiment of the present invention will be described below with reference to FIG.

  FIG. 1 is a diagram illustrating the overall configuration of the system when the embodiment is applied to the conference system. Hereinafter, the conference system will be described as an example. However, the present invention is not limited to the conference system, and any display screen may be shared by a plurality of users.

  The system of the embodiment includes a FW / VPN gateway 101 disposed between an intranet and the Internet, a portable gateway 111 disposed between the Internet and a mobile network, and a display station (hereinafter referred to as “DS”) that can display display data. ) 121, 122, a display station server (hereinafter referred to as “DS server”) 123 that transmits display data to the display stations 121, 122, and the display stations 121, 122, and can be used by the user. A mobile terminal 131 (for example, a mobile phone, a PDA, a remote controller, etc.), a base station that receives communication from the mobile terminal 131, and a personal computer (hereinafter referred to as a personal computer) that can communicate with the display stations 121 and 122. (PC) 132), an authentication server 151 for authenticating a user or a terminal in response to an access request to the intranet from the Internet via the FW / VPN gateway 101, and a file connected to the intranet and storing the user's file A server 161. The display stations 121 and 122 include a display license issuance / management unit 141 that issues and manages a display license for permitting display of display data on the display station, and a license check unit that checks the validity of the received display license. 142. The portable terminal 131 includes a display license storage unit 143 that stores a display license. The display stations 121 and 122 and the portable terminal 131 preferably include a display device, an input device, a storage device, a communication device, and a processing device. The display screens of the display stations 121 and 122 are preferably larger than the display screen of the mobile terminal 131. The authentication server 151 and the file server 161 preferably include a processing device and a storage device.

  A user of the conference system uses the portable terminal 131 (or may be) to access the internal authentication server 151 from outside via the Internet and receive authentication, and then access the file server 161 via the LAN.

  Hereinafter, a procedure in which the user operates the portable terminal 131 to display the file stored in the file server 161 on the DS 121 will be briefly described.

  The user connects to the DS server 123 via the mobile network from the mobile terminal 131 that the user has, and selects the DS 121 near the mobile terminal from the DS list. Since a plurality of DSs 121 and 122 are installed, a DS server 123 is installed. For example, when connecting with an IP address, if the mobile terminal 131 stores the IP address of the DS 121, the DS server 123 is installed. You may connect directly to DS121 without going through. Further, when both the portable terminal 131 and the DS 121 have short-range communication means such as infrared rays, they may communicate directly with the DS 121 using the short-range communication means without going through a network.

  When the mobile terminal 131 establishes communication with the DS 121 using any communication means, the mobile terminal 131 transmits a use request to the DS 121. Upon receiving the use request, the DS 121 reads the license from the license issuance / management unit 141 and returns it to the portable terminal 131. The portable terminal 131 stores the license in the license storage unit 143 and ends the communication with the DS 121. The license issuance / management unit 141 of the DS 121 stores a license issuance (issue date and time) and an issue destination (identification information of the mobile terminal 131 and user identification information). Next, the mobile terminal 131 connects to the file server 161. The file server 161 searches the stored file, creates a file list (directory), and sends it back to the portable terminal 131. The portable terminal 131 displays a list of files on the display screen, and accepts selection of a file in the list from the user. The portable terminal 131 reads the license from the license storage unit 143, and transmits the identification information of the selected file and the license to the file server 161. The file server 161 transmits a license to the DS 121 together with a file transmission request including file identification information. The DS 121 confirms in the license check unit 142 whether or not the sent license is correct, and if it is correct, permits the file server 161 to transmit the file. If it is not correct, file transmission to the file server 161 is prohibited. The portable terminal 131 receives a file from the file server 161 and displays it on the display screen. The file stored in the file server 161 can be displayed on the DS 121 by operating the portable terminal 131 by the above procedure.

  FIG. 2 is a diagram describing a DS license issuing procedure.

  First, the mobile terminal 131 transmits a connection request to the DS server 123 according to the input from the user (step 212). The DS server 123 accepts a connection request (step 242). The DS server 123 manages the DS installation location, IP address, usage status, and the like. Here, the DS list is a set of DS name and DS-ID. However, as long as the information can identify the DS, the DS-ID may be the IP address of each DS, and the DS name is not essential. Also, when the DS is turned on or off, the power ON / OFF state is transmitted to the DS server 123. The DS server 123 manages the power ON / OFF state and the like, and only a list of available DSs is available. May be created, and the DS installation location may be included in the list. The DS server 123 preferably stores the created list in a storage device. When the DS server 123 accepts the connection request, the DS server 123 transmits the DS list to the portable terminal 131 (step 244). The portable terminal 131 displays the list on the display screen and accepts a DS selection to be connected from the user (step 214). The portable terminal 131 transmits a license request for use, a terminal ID, and a DS-ID to be used to the DS server 123 (step 216). The DS server 123 identifies the DS 121 from the DS-ID, and sends a license issuance request together with the terminal ID to the DS 121 corresponding to the DS-ID (step 246). The DS 121 receives the license information and the terminal ID, and receives them. Are stored in the storage device (step 262). The DS 121 issues a license and transmits the license to the DS server 123 (step 264). The DS server 123 transmits the license to the portable terminal 131 (step 248). The portable terminal 131 receives the license, stores the license in the storage device (step 218), ends the connection (step 220), and ends the process (step 222).

  As described in the explanation of FIG. 1, when the DS 121 and the portable terminal 131 can directly communicate with each other by short-range communication means, the DS 121 performs processing of the DS server 123 (steps 242, 244, 246, and 248). Is preferably performed. For example, the DS 121 and the mobile terminal 131 may directly transfer the license. Conversely, the DS server 123 may perform part or all of the processing of the DS 121 (step 262 and step 264) instead of the DS 121. The license is used for determination to receive the request when there is any request to the DS 121. For example, the public key is enclosed when the license is issued, and the file is encrypted using the public key. A method of using the composite key owned by the DA 121 after the DS 121 receives the encrypted file is also conceivable. Use conditions such as a use time limit, a use time limit, a display position on the DS, and a region may be set. The license preferably includes the display position, display area, and display time of the DS 121. As a result, when a plurality of users use the portable terminal 131 to display a file on the shared display station 121, it is possible to suppress adverse effects such as overlapping display of the file and improve the visibility of the file. can do.

  By providing the DS 121 and 122 with a function of issuing a license and providing the mobile terminal 131 with a function of recording a license, the display on the DS can be controlled depending on the presence or absence of the license, and a display instruction can be made through a flexible route. It becomes like this. In addition, the DS server 123 is provided with a terminal management function to reject access from unauthorized terminals, or to have a list of terminals that have performed unauthorized display, and to reject access requests from the next time. It is also possible to provide it. Since the DS is considered to be used in a public place, by providing a check function of the terminal in the DS server 123, it becomes possible to remove a display undesirable for the public place.

  FIG. 3 is a diagram showing a remote file display process.

  A connection request is transmitted from the portable terminal 131 to the file server 161 (step 331). The connection request preferably includes a login request, a user name (user ID), and a password, but the password is not essential. After receiving the connection request (step 361), the file server 161 connects to the authentication server 151 and performs authentication processing (steps 332 and 350). Here, the authentication server 151 is installed because access to the in-house system is assumed. However, if authentication is not required, the authentication server 151 may be omitted. When the authentication (step 362) is successful, the file server 161 transmits a file list (file list) that can be used by the user of the mobile terminal 131 to the mobile terminal 131 (step 363). The file server 161 manages the access authority of the file, and searches the storage device for a file that can be referred to / edited based on the user name of the user who has logged in (connection request). Create a file list.

  The portable terminal 131 displays a file list on the display screen, and accepts selection of a file desired to be displayed from the user (step 333). The portable terminal 131 transmits a file transmission request to the file server (step 334). The file transmission request preferably includes a file name (file ID), a DS-ID of a DS to be displayed, a license, and a terminal ID. The file server 161 confirms the authority to use the portable terminal 131 based on the terminal ID (step 364). The file server 161 identifies the DS from the DS-ID, and if it is a transmittable file, transmits a connection request to the DS identified from the DS-ID (step 365). The file server 161 transmits the terminal ID and license to the DS 121, and requests the DS 121 to confirm the license (step 366). The file server 161 waits for the file transmission permission from the DS (step 366), and transmits the file to the DS 121 (step 367). The DS 121 accepts the connection request (step 321), confirms the transmitted license, and transmits a transmission permission to the file server 161 (step 322). The license is confirmed based on whether or not the license information received together with the terminal ID exists in the received terminal ID record in the license information and terminal ID registration information registered in the user registration (step 262). . The DS 121 permits file transmission when the license information exists (step 366), and rejects file transmission when the license information does not exist. The DS 121 receives the file (step 323) and displays it on the display screen (step 324). The file server 161 transmits an end message to the portable terminal 131 after completion of the file transmission (step 368), and ends (step 369). When the portable terminal 131 receives the termination message, the portable terminal 131 terminates the connection (step 335).

  The DS server 123 may relay communication between the file server 161 and the DS 121. The DS server 123 may perform part of the processing of the DS 121 (Step 321 and Step 322) instead of the DS 121. Here, the DS 121 receives and displays the file, but it is also conceivable to use a new display operation or deletion operation from the mobile terminal 131 without displaying the file. These operations can be performed by the DS confirming the operation request by transmitting a license together with the operation request. Moreover, it is also possible to realize the message transmission / reception function only by electronic mail without connection. In this case as well, the authenticity of the e-mail can be confirmed by attaching the license information to the e-mail.

  Thus, by separately processing license issuance and file reception and display, it becomes possible to display a remote file on a local display regardless of the storage location of the file.

  In this embodiment, a file server is used, but it is also possible to set up a directory server so that a file can be searched or to access a personal computer. It is also possible to directly transmit data owned by the mobile terminal 131 to the DS 121 without using the file server 161. Furthermore, it is possible to adopt a configuration in which the DS 121 relays a service use request from the portable terminal 131 and uses the service of the file server 161 by using the Web service technology.

  FIG. 4 is a diagram showing an image of use. A user of the portable terminal 131 has a meeting in front of the DS 121 of the office A, which is a business trip destination. The mobile phone 131 is used to connect to the computer 401 in his office (office B), and the file stored in the storage device 402 is selected and displayed on the screen of the DS 121 (window 412). The device for accessing the remote computer does not have to be a mobile terminal, but may be a terminal having a communication function. In FIG. 4, the PC 132 is used as one of the terminals to access the computer 403 in the office C and display the material stored in the storage device 404 on the screen of the DS 121 (window 414).

  The present invention can remotely access the company's file server from a mobile terminal at a business trip destination, select a file stored in the file server, and display it on a display at the business trip destination.

1 is a system configuration diagram of an embodiment of the present invention. It is the figure which showed the license issue procedure of the display station. It is the figure which showed the display process of the remote file. It is the figure which showed the image of utilization of this invention.

Explanation of symbols

121 Display Station 131 Mobile Terminal 141 Display License Issuance / Management Unit 142 License Check Unit 143 License Storage Unit 151 Authentication Server 161 File Server

Claims (7)

In a display system comprising a display and a display server and capable of displaying a file in a file server on the display in response to a request from a terminal,
In response to a request from the terminal , the display server transmits a list of displays included in the display system to the terminal ,
The display server receives the identification information of the terminal and the identification information of any display included in the list, and receives a license defining the right to use the display corresponding to the identification information of the display from the display. To the terminal ,
The display stores correspondence information between the license and the identification information of the terminal in a storage device ,
In response to a request from a file server , the display operates in response to a request from the terminal, the license received from the file server and the terminal identification information are present in the correspondence information in the storage device To send the file transmission permission to the file server ,
Display system the display, the file sent from the file server receives the transmission permission, and wherein the Turkey be displayed on the display screen. The display system includes the display server and a plurality of displays.
2. The display system according to claim 1, wherein the display server comprises means for transmitting the list of displays to the terminal and means for transmitting the license to the terminal.   The display system according to claim 1, wherein the license includes information defining a display position, a display area, and a display time of the file on the display screen. In a display station that can display a file in the file server in response to a request from the terminal ,
In response to a request from the terminal, a means for transmitting a license defining the right to use the display station to the terminal;
Means for storing in the storage device correspondence information between the license and the terminal identification information received from the terminal;
In response to a request from a file server that operates in response to a request from the terminal, the license received from the file server and the terminal identification information exist in the correspondence information in the storage device. Means for transmitting a file transmission permission to the file server;
A display station, comprising: means for displaying the file transmitted from the file server upon receiving the transmission permission on a display screen. In a remote file display method that transfers a file in a file server to a display in response to a request from a terminal.
A display server , in response to a request from the terminal, transmits a list of displays managed by the display server to the terminal via a network;
When the terminal receives the list, the terminal displays the list on the display screen of the terminal, accepts selection of a display in the list from a user, and identifies the selected display with the identification information The identification information of the terminal is transmitted to the file server via a network, and the identification information of the display is stored in the storage device of the terminal,
When the display server receives the display identification information and the terminal identification information, the display server identifies the display based on the display identification information, and transmits the terminal identification information via the network. To the specified display,
When the display receives the identification information of the terminal, the display transmits a license defining the right to use the display to the display server via the network, and the identification information of the license and the terminal Is stored in the storage device,
When the display server receives the license, the license is transmitted to the terminal via a network;
When the terminal receives the license, the terminal stores the license in a storage device of the terminal;
The terminal sends a connection request to the file server via a network;
When the file server receives the connection request, the file server sends a list of files in the file server to the terminal via a network,
When the terminal receives a list of files, the terminal displays the list on the display screen of the terminal, accepts a selection of a file in the list from a user, and identifies the selected file And the identification information of the display in the storage device of the terminal and the license and the identification information of the terminal are transmitted to the file server via a network,
When the file server receives the file identification information, the display identification information, the license, and the terminal identification information, the file server identifies the display based on the display identification information, and the license and the terminal Sending identification information to the specified display via the network;
When the display receives the license and the terminal identification information, the display checks whether the received license and the terminal identification information exist in the correspondence information in the storage device. The confirmation result is transmitted to the file server via the network,
When the file server receives the confirmation result, the file server reads the file from the storage device based on the identification information of the file, transmits the file to the display via a network,
When the display receives the file, the display displays the file on a display screen. In a remote file display method that transfers a file in a file server to a display in response to a request from a terminal.
The terminal transmits the identification information of the terminal to the display via a network;
When the display receives the identification information of the terminal, the display transmits a license specifying the identification information of the display and a right to use the display to the terminal via a network, and the license Storing correspondence information of the identification information of the terminal in a storage device;
When the terminal receives the license, the terminal stores the license in a storage device of the terminal;
The terminal sends a connection request to the file server via a network;
When the file server receives the connection request, the file server sends a list of files in the file server to the terminal via a network,
When the terminal receives a list of files, the terminal displays the list on the display screen of the terminal, accepts a selection of a file in the list from a user, and identifies the selected file And the identification information of the display in the storage device of the terminal and the license and the identification information of the terminal are transmitted to the file server via a network,
When the file server receives the file identification information, the display identification information, the license, and the terminal identification information, the file server identifies the display based on the display identification information, and the license and the terminal Sending identification information to the specified display via the network;
When the display receives the license and the terminal identification information, the display checks whether the received license and the terminal identification information exist in the correspondence information in the storage device. The confirmation result is transmitted to the file server via the network,
When the file server receives the confirmation result, the file server reads the file from the storage device based on the identification information of the file, transmits the file to the display via a network,
When the display receives the file, the display displays the file on a display screen. In a remote file display method that transfers a file in a file server to a display in response to a request from a terminal.
A display server , in response to a request from the terminal, transmits a list of displays managed by the display server to the terminal via a network;
When the terminal receives the list, the terminal displays the list on the display screen of the terminal, accepts selection of a display in the list from a user, and identifies the selected display with the identification information The identification information of the terminal is transmitted to the file server via a network, and the identification information of the display is stored in the storage device of the terminal,
When the display server receives the identification information of the display and the identification information of the terminal, the display server transmits a license that defines the right to use the display to the display server via the network, and Storing correspondence information between the license and the identification information of the terminal in a storage device;
When the terminal receives the license, the terminal stores the license in a storage device of the terminal;
The terminal sends a connection request to the file server via a network;
When the file server receives the connection request, the file server sends a list of files in the file server to the terminal via a network,
When the terminal receives a list of files, the terminal displays the list on the display screen of the terminal, accepts a selection of a file in the list from a user, and identifies the selected file And the identification information of the display in the storage device of the terminal and the license and the identification information of the terminal are transmitted to the file server via a network,
When the file server receives the file identification information, the display identification information, the license, and the terminal identification information, the display server is specified based on the display identification information, and the license and the terminal To the display server identified via the network,
When the display server receives the license and the terminal identification information, the display server determines whether the received license and the terminal identification information exist in the correspondence information in the storage device. Confirm, and send the confirmation result to the file server via the network,
When the file server receives the confirmation result, the file server reads the file from the storage device based on the identification information of the file, transmits the file to the display server via a network,
When the display server receives the file, the display server identifies the display based on identification information of the display, and transmits the file to the identified display via a network;
When the display receives the file, the display displays the file on a display screen.

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