JP2007139855A - Image display system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically set an optimum picture quality adjustment parameter in a place where an image display device is used. <P>SOLUTION: An image display system has a projection PJ as an image display device and a management server SV which can set the picture quality adjustment parameter to the projector PJ, and the management server SV has a function of specifying the use place of the projector PJ, a function of acquiring a picture quality adjustment parameter corresponding to the specified use place, and a function of supplying the acquired picture quality adjustment parameter to the image display device. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an image display system that enables image quality adjustment corresponding to a place where an image display device is used, a management server used in the image display system, and an image quality adjustment parameter setting program for the management server.

  In recent years, projection-type image display devices (called projectors) are becoming widespread for applications such as business presentations and home theaters in ordinary households. In addition, with the advancement of miniaturization and weight reduction technology, projectors that have been often used as a stationary type have become freely portable.

  Therefore, in an office or the like, the projector can be carried and installed at the presentation venue each time. In addition, at home, it has become possible to use a projector without selecting a place to use such as watching a movie in a living room or playing a game in a children's room.

  Currently, image quality adjustment such as projector color adjustment is generally performed manually. For this reason, manufacturers that produce projectors have prepared several color modes that can be easily adjusted to reduce the user's operational burden and can easily adjust image quality. The optimal color mode can be set by operating buttons on the controller and projector.

  Note that the color mode described above is suitable for a dynamic mode suitable for projection in a bright room, a living mode suitable for projection in a room where the curtains are closed in the daytime, and a projection in a dark room with little illumination left. Examples include natural mode and theater mode suitable for projection in a light-shielded room.

  The user can select and set an optimum color mode from among the plurality of color modes, thereby enabling projection with an optimum image quality according to the place of use of the projector and the content.

  However, as described above, since the projector can be freely carried, the place of use is frequently changed depending on the purpose of use and the user who uses the projector. In this case, since the optimum color mode varies depending on the place of use, the user needs to set a color mode suitable for the place of use, and more detailed image quality adjustment (for example, RGB values, color temperature, Sharpness, gamma value, etc.). Needless to say, projection is possible without setting the optimal color mode and adjusting the image quality in the location where the projector is used, but it is possible to project with the optimum image quality at the location where the projector is used. More desirable.

  Several techniques for making such image quality adjustment easy have been proposed (see, for example, Patent Document 1). The technique disclosed in Patent Document 1 stores an image quality adjustment parameter (image quality adjustment parameter) uniquely set by a user in a server connected to a network, and the image quality adjustment parameter is used by another user. The image quality adjustment parameter can be shared by a plurality of users. As a result, the image quality adjustment parameter set as optimal by a certain user can be acquired from the server by another user, so that the image quality adjustment can be simplified.

JP 2004-93731 A

  However, since the image quality adjustment parameter used in the technique disclosed in Patent Document 1 is a parameter set by each user according to his / her preference, other parameters may be used even when projection is performed under similar conditions. It is not always the optimum parameter for the user.

  Also, the image quality adjustment parameter used in the technique disclosed in Patent Document 1 is not necessarily an image quality adjustment parameter suitable for the situation of the place of use. That is, the technique disclosed in Patent Document 1 is a very effective technique when the same user uses the same type of projector in the same environment, but a certain user projects a projector in a living room at home, for example. When trying to go, it is considered difficult to determine which image quality adjustment parameter set by which user is optimal in the living room.

  Therefore, the present invention provides an image display system that can set an image quality adjustment parameter corresponding to a place where the image display device is used for the image display device, a management server used in the image display system, and an image quality adjustment parameter setting program for the management server. The purpose is to provide.

(1) The image display system of the present invention is an image display system including an image display device and a management server capable of setting image quality adjustment parameters for the image display device, wherein the management server displays the image display It has a function of specifying the usage location of the apparatus, a function of acquiring an image quality adjustment parameter corresponding to the specified usage location, and a function of giving the acquired image quality adjustment parameter to the image display device.
As described above, according to the image display system of the present invention, the image quality adjustment parameter corresponding to the place of use of the image display device can be set for the image display device. The “image quality adjustment parameter corresponding to the place of use” here means that the image quality adjustment parameter is well suited to the place of use. In the embodiment described later, “the image quality optimum for the place of use”. It is expressed as “adjustment parameter”. The same applies to “image quality adjustment parameter corresponding to use time” and the like.

(2) In the image display device according to (1), it is preferable that the image display device and the management server are connected via a network.
Thus, by connecting the image display device and the management server via a network, the management server side can easily set image quality adjustment parameters for a plurality of image display devices installed in various places of use. be able to.

(3) The image display device according to (2) preferably includes a network connection management unit that enables an address on the network to be assigned to the image display device connected to the network.
As a result, an address (such as an IP address) on the network can be assigned to the image display apparatus connected to the network.

(4) In the image display device according to (3), it is preferable that the network connection management unit is included in the management server.
Thereby, the configuration of the image display system can be simplified. The network connection management unit can be provided separately from the management server.

(5) In the image display device according to any one of (2) to (4), network connection means capable of connecting the image display device to the network corresponds to each use place of the image display device. It is preferable to provide them.
Thereby, the image display device can be connected to the network by connecting the image display device to the network connection means corresponding to the place of use. Further, since the network connection means corresponds to each use place, the use place of the image display apparatus can be specified on the management server side depending on which network connection means the image display apparatus is connected to.

(6) In the image display device according to (5), it is preferable that the network connection unit is a port provided in a switching hub.
As a result, the image display device can be easily connected to the network at each use location, and each port as a network connection means corresponds to each use location. Depending on which port is connected to, the location where the image display device is used can be specified easily and reliably.

(7) In the image display device according to (5), it is also preferable that the network connection unit is an access point.
In this way, by using the network connection means as an access point, the image display device can be easily connected to the network at each place of use as in (6), and each access point as the network connection means can be By corresponding to each use place, the use place of the image display apparatus can be easily and reliably specified on the management server side depending on which access point the image display apparatus is connected to.

(8) In the image display device according to any one of (5) to (7), the management server is provided with information indicating correspondence between the network connection unit and a use place, to the image display device It is preferable to have information indicating the correspondence between the unique information and the model of the image display device, and the information indicating the correspondence between the model of the image display device, the use location of the model, and the image quality adjustment parameter corresponding to the use location. .
As a result, the management server side can specify the location where the image display device is used and the model of the image display device, and can correspond to the model and the location where the image display device is specified. The image quality adjustment parameter to be acquired can be acquired.

  (9) In the image display device according to any one of (5) to (7), the management server is provided with information indicating correspondence between the network connection unit and a place of use, and the image display device Information indicating the correspondence between the unique information and the model of the image display device, the model of the image display device, the use location of the model, the use time of the image display device at the use location, and the image quality corresponding to the use time It is also preferable to have information indicating the correspondence with the adjustment parameters.

  As a result, the management server side can acquire the image quality adjustment parameter corresponding to the model, use location, and use time from the specified model, use location, and use time. As described above, when the user uses the same model in the same room by acquiring the image quality adjustment parameter corresponding to the use time of the image display device at the usage location in addition to the model and usage location of the image display device. Even so, the image display apparatus can be operated with the image quality adjustment parameter corresponding to the use time.

  Specifically, a plurality of time zones are set for each use place, and image quality adjustment parameters corresponding to the respective time zones are set. Then, the management server side determines to which time zone the use time of the image display device belongs, and sets the image quality adjustment parameter for the image display device.

(10) In the image display device according to (8) or (9), it is also preferable that the image quality adjustment parameter is an image quality adjustment parameter used in the past.
Thus, in the image display system described in (8), the management server SV sets the image quality adjustment parameter reflecting the preference of the user who uses the image display device for each model and location of use of the image display device. It can be set in the image display device. In the image display system described in (9) above, image quality adjustment that reflects the preference of the user who uses the image display device for each use time of the image display device as well as the model and location of use of the image display device. Parameters can be set in the image display device.

(11) In the image display device according to any one of (1) to (10), the image quality adjustment parameter is any one of a plurality of color modes set in the image display device. It is preferable that the data is for setting.
Accordingly, it is possible to automatically set an optimum color mode for the image display device used at each use place at each use place.

(12) In the image display device according to any one of (1) to (10), it is preferable that the image quality adjustment parameter is data in which a degree of color adjustment of the image display device can be set in detail. .
Thereby, the color adjustment with respect to the image display apparatus used in the said usage place in each use place can be performed in detail. As an example of setting the degree of color adjustment in more detail, for example, RGB (CMY can be added) values, brightness, contrast, hue and saturation, color temperature, skin color temperature, gamma correction, etc. are optimal. It is conceivable to set a different value.

(13) In the image display device according to any one of (1) to (12), the management server can perform device authentication based on unique information given to the image display device. is there.
Thus, by performing device authentication, the management of the image display device used by the user can be performed on the management server side. For example, it is effective when the image display system of the present invention is a paid service system. It will be something.

(14) In the image display device according to any one of (1) to (13), the management server performs user authentication based on unique information given to a user who uses the image display device. It is also possible.
By performing such user authentication, the management server side can grasp the usage status of the user's image display device. Also, by performing device authentication and user authentication, it is possible to grasp which user uses which image display device and how, so the management server can easily perform various management. . Therefore, this is effective when the image display system of the present invention is a paid service system.

(15) The management server of the present invention is a management server used in an image display system having an image display device and a management server capable of setting an image quality adjustment parameter for the image display device. And a function of acquiring an image quality adjustment parameter corresponding to the specified use location, and a function of supplying the acquired image quality adjustment parameter to the image display device.
When the management server has such a function, the image display system described in (1) can be easily configured. Note that the management server described in (15) also preferably has the characteristics of the image display system described in (2) to (14).

  (16) An image quality adjustment parameter setting program for a management server according to the present invention is provided in the management server used in an image display system having an image display device and a management server capable of setting an image quality adjustment parameter for the image display device. An image quality adjustment parameter setting program of a management server for executing the setting of the image quality adjustment parameter, the step of specifying the use location of the image display device, and the step of acquiring the image quality adjustment parameter corresponding to the specified use location And providing the obtained image quality adjustment parameter to the image display device.

  By causing the management server to execute such an image quality adjustment parameter setting program of the management server, an image quality adjustment parameter corresponding to the place of use of the image display device can be given to the image display device. Note that the image quality adjustment parameter setting program of the management server described in (16) also preferably has the characteristics of the image display system described in (2) to (14).

  Hereinafter, embodiments of the present invention will be described. In each embodiment described below, the image display device is described as a projector.

[Embodiment 1]
FIG. 1 is a diagram illustrating a configuration of an image display system according to the first embodiment. As shown in FIG. 1, the image display system according to the first embodiment is divided into a user side (office or home) connected via a network NW such as a LAN and a device control side.

  On the user side (assumed to be an office), there are a plurality of rooms such as a conference room A1, an audiovisual room B1, and a common space C1 as the place of use of the projector PJ. Each of the plurality of rooms is connected to the projector PJ. Connection terminals T1, T2, T3 are provided. Each of the connection terminals T1, T2, T3 is connected to a network connection means (a plurality of ports P1, P2,... Provided in the switching hub SW) that can connect the projector PJ to the network NW. Connected through.

  Note that the ports P1, P2, and P3 of the switching hub SW are provided in one-to-one correspondence with rooms such as the conference room A1, the audiovisual room B1, and the shared space C1. The switching hub SW is connected to the network NW.

  FIG. 2 is a diagram for explaining the correspondence between the ports P1, P2, P3,... Of the switching hub SW and the rooms (the conference room A1, the audiovisual room B1, and the common space C1 in FIG. 1). In the example of FIG. 2, the port P1 corresponds to the conference room A1, the port P2 corresponds to the audiovisual room B1, and the port P3 corresponds to the shared space C1.

  Therefore, for example, the projector PJ used in the conference room A1 is connected to the port P1 by connecting the projector PJ to the connection terminal T1 provided in the conference room A1. Similarly, the projector PJ used in the other room is connected to the corresponding port.

  1 and 2, the projector PJ used in each room is connected to a corresponding port by connecting the projector PJ to connection terminals T1, T2,... Provided in each room. However, if the projector PJ can be directly connected to the corresponding port, the connection terminals T1, T2,.

  FIG. 3 is a diagram showing the configuration of the management server SV on the device control side. As shown in FIG. 3, the management server SV stores a device information database DB1 for storing information related to each device (projector PJ) registered in advance, a model and a place of use for each model of the projector PJ registered in advance. As a network connection management unit that performs processing such as IP address assignment for each projector PJ based on the correction information database DB2 and DHCP (Dynamic Host Configuration Protocol) management information 11 capable of acquiring an optimal image quality adjustment parameter from The DHCP processing unit 12 has a function of generating management information 13 (see FIG. 8) for managing each projector PJ and acquiring image quality adjustment parameters for each projector PJ by referring to the device information database DB1 and the correction information database DB2. Projector management control unit 14, network Through the workpiece NW has a transceiver 15 capable of communication with each projector PJ.

  In addition to these, the management server SV may be provided with an authentication information database DB3 for storing information used for user authentication. Since user authentication will be described in the third embodiment, the description thereof is omitted in the first embodiment.

  The device information database DB1 has a model acquisition table (see FIG. 6), and the model acquisition table identifies the model of the projector based on unique information (referred to as device ID) assigned to each projector PJ registered in advance. can do.

  The correction information database DB2 has an image quality adjustment parameter acquisition table (see FIG. 7). By this image quality adjustment parameter acquisition table, the projector PJ can be determined from the model of each projector PJ registered in advance and the room in which the projector PJ is used. An optimum image quality adjustment parameter for the PJ can be acquired.

  In each embodiment of the present invention (Embodiments 1 to 4), the image quality adjustment parameter is one of a plurality of color modes (dynamic mode, theater mode, living mode, etc.) prepared for each projector. It is assumed that the data is for setting a mode.

  FIG. 4 is a diagram showing a configuration of a projector PJ used on the user side. As shown in FIG. 4, the projector PJ has an optical system 21 and a control system 22. The control system 22 includes an image signal processing / control unit 221 and a correction parameter storage unit 222 originally provided in a general projector, a management information input / output unit 223 and an identification information storage unit necessary for realizing the present invention. 224. In addition, when performing user authentication, you may make it have the authentication information storage part 225 which memorize | stores user authentication information (user ID etc.) as information required for user authentication.

  The management information input / output unit 223 enables the management server SV to output its own identification information such as a device ID and user authentication information to the management server SV via the network NW, and is sent from the management server SV. It is possible to input image quality adjustment parameters.

  The correction parameter storage unit 222 stores correction parameter values (image quality adjustment parameters and the like) set in advance as defaults. Therefore, when the projector PJ does not input the image quality adjustment parameter from the management server SV, the image signal processing unit and the control unit 221 perform image signal processing using the correction parameters set as defaults in the correction parameter storage unit 222. The On the other hand, when the management information input / output unit 223 inputs the image quality adjustment parameter from the management server SV, the image signal processing unit and the control unit 221 perform image signal processing using the image quality adjustment parameter from the management server SV. .

The identification information storage unit 224 stores its own device ID, and is written in a ROM or the like at the time of factory shipment on the projector maker side. However, an administrator (user or the like) of the projector may be changeable.
The configurations shown in FIGS. 1 to 4 can be used not only in the first embodiment but also in each embodiment described later.

  FIG. 5 is a diagram showing the correspondence between the switching hub SW and the ports P1, P2,... Provided in the switching hub SW and the room. FIG. 5 shows a case where there are a plurality of switching hubs SW1, SW2,. Each of the ports P1, P2,... Of each of the switching hubs SW1, SW2,.

  For example, the ports P1, P2, and P3 of the switching hub SW1 are associated with the conference room A1, the audiovisual room B1, and the shared space C1, as shown in FIG. Further, although the ports P1, P2, and P3 of the switching hub SW2 are not shown in FIG. 1, it is assumed that they are associated with the conference room A2, the conference room A3, and the shared space C2.

  FIG. 6 is a diagram illustrating an example of a model acquisition table included in the device information database DB1 of the management server SV. As shown in FIG. 6, in the model acquisition table, the model of the projector corresponding to the device ID is registered for each device ID of each projector PJ, and the model can be specified by the device ID. Further, a MAC address (Media Access Control address) is registered corresponding to each device ID as necessary. For example, the model having the device ID “PJ0001” is “EMP-xxx”, and its MAC address is “00: 11: 22: 33: 44: AA”.

  The MAC address can be used for device authentication, but device authentication can also be performed using only the device ID. When device authentication is performed using a device ID, the device information database DB1 is not particularly required to have a MAC address.

  FIG. 7 is a diagram illustrating an example of an image quality adjustment parameter acquisition table included in the correction information database DB2. FIG. 7A is a diagram showing an example of an image quality adjustment parameter acquisition table prepared for the office shown in FIG. 1, and FIG. 7B is an image quality adjustment parameter acquisition table prepared for home use, for example. It is a figure which shows an example.

  In the example of FIG. 7A, an example of a model “EMP-xxx” is shown. When a projector of the model is used in the conference room A1, “presentation mode”, When used in the audiovisual room B1, the model, the room, and the color mode are associated with each other as “theater mode” as an optimum image quality adjustment parameter.

  In addition, since the example of FIG. 7B is a case where the projector is used at home, for example, when using a projector of the “EMP-xxx” model in the living room, the optimum image quality adjustment parameter is “ When used in a “living mode” or a children's room, a color mode such as “dynamic mode” is associated with each room as an optimum image quality adjustment parameter.

  With such an image quality adjustment parameter acquisition table, an optimal image quality adjustment parameter for the projector can be acquired from the model of the projector to be used and the usage location of the model.

  FIG. 8 is a diagram illustrating an example of the management information 13 included in the management server SV. As shown in FIG. 8, the management information 13 has a content in which a device ID of a projector, an IP address, a use location (referred to as a room), and an installation time (referred to as use time) are associated with each other. . However, even for registered projectors, the IP address, room, and use time are blank for projectors that are not in use at that time.

  In the example of FIG. 8, the projector having the device ID “PJ0002” is not installed in any room at that time, and of course, an IP address has not been acquired. The use time is blank. When the use of the projector is finished and the IP address is released, the IP address, room, and use time are updated (deleted) and become blank.

  FIG. 9 is a flowchart for explaining the overall processing flow of the image display system according to the first embodiment. FIG. 9A shows the flow of processing on the projector PJ side, FIG. 9B shows the flow of processing on the switching hub SW side, and FIG. 9C shows the flow of processing on the management server SV side. .

  In FIG. 9, for example, it is assumed that the projector PJ is connected to the connection terminal T1 of the conference room A1, for example. Thereby, the projector PJ is connected to the network NW via the port P1 of the switching hub SW (step S1). Subsequently, the projector PJ requests the management server SV to assign an IP address (step S2).

  On the other hand, the switching hub SW stores the device ID from the projector PJ (step S11), detects the IP address assignment request from the projector PJ, and transfers the IP address assignment request to the management server SV (step S12). When there are a plurality of switching hubs SW, each switching hub sends its own identification ID to the management server SV together with the IP address assignment request. Thereby, the management server SV can know through which switching hub the IP address assignment request of the projector is sent.

  The management server SV assigns an IP address to the projector that has issued the IP address assignment request by the DHCP processing unit 12, and transmits the result to the projector PJ via the switching hub SW (step S21).

  The switching hub SW stores the IP address sent from the management server SV (step S13), and stores the combination of the IP address of the projector PJ, the device ID, and its own port (port to which the projector PJ is connected). (Step S14).

  The projector PJ receives the IP address transmitted from the management server SV via the switching hub SW, and sets itself to the IP address (step S3). Thereafter, the management server SV requests and acquires the device ID of the connected projector PJ using the Simple Network Management Protocol (SNMP) or the like to the switching hub SW (step S22). Accordingly, the switching hub SW transmits the projector device ID requested from the management server SV to the management server SV (step S15).

  The management server SV specifies the model from the acquired projector ID using the model acquisition table (see FIG. 6) of the device information database DB1 (step S23). In addition, the management server SV identifies the room in which the projector is installed from the correspondence (see FIG. 5) with each port of the switching hub SW (step S24).

  Then, the image quality adjustment parameter corresponding to the model and room is acquired from the image quality adjustment parameter acquisition table (see FIG. 7) in the correction information database DB2 (step S25), and the acquired image quality adjustment parameter is transmitted to the switching hub SW (step S26). ). Thereby, the switching hub SW transfers the image quality adjustment parameter transmitted from the management server SV to the corresponding projector PJ (step S16).

  The projector PJ receives the image quality adjustment parameter transmitted from the management server SV via the switching hub SW, performs the image quality adjustment itself based on the received image quality adjustment parameter (step S4), prepares for projection, and performs projection. Is started (step S5).

  FIG. 10 is a flowchart for explaining in more detail the flow of processing of the projector in the image display system according to the first embodiment. First, the projector PJ is turned on and connected to the network NW (steps S31 and S32). When the projector PJ is connected to the network NW, it transmits its own device ID to the switching hub SW (step S33), and then makes an IP address assignment request to the management server SV (step S34).

  Then, it is determined whether an IP address has been assigned (step S35). If an IP address has been assigned, the IP address is assigned to the assigned IP address and the network environment is set (step S36). On the other hand, if the IP address has not been assigned, the process returns to step S34 to make an IP address assignment request again. If the IP address is not assigned even after several IP address assignment requests, the connection to the network NW is given up (the image quality adjustment parameter setting is given up automatically) and projection starts.

  Then, it receives the image quality adjustment parameter from the management server SV via the switching hub SW (step S37), sets its own image quality adjustment parameter with the received image quality adjustment parameter (step S38), prepares for projection, and enters the projection state (step S38). Steps S39 and S40). In the projection state, it is determined that the power is off (step S41). If the power is off, the management server SV is requested to release the IP address (step S42). Here, if the IP address can be released, the network environment is initialized (steps S43 and S44).

  If the IP address is not released after several IP address release requests, the process is terminated. This is because in DHCP, a usable period is set for the IP address, and when the usable period expires, the management server SV performs a process of releasing the IP address. There is no problem.

  FIG. 11 is a flowchart for explaining in more detail the processing flow of the management server SV in the image display system according to the first embodiment. FIG. 11A shows projector connection / setting processing performed by the management server SV, and FIG. 11B shows projector disconnection / termination processing performed by the management server SV.

  First, as shown in FIG. 11A, it is determined whether or not there is an IP address assignment request while waiting for connection of the projector PJ (steps S51 and S52). If there is an IP address assignment request, DHCP processing is performed. The unit 12 assigns an IP address using the DHCP management information 11, and updates the DHCP management information 11 (step S53).

  Then, the IP address assignment result is transmitted to the projector PJ via the switching hub SW (step S54), and the device ID of the connected projector PJ is requested and acquired using the SNMP to the switching hub SW. (Step S55). Subsequently, the model is specified from the acquired device ID and the model of the projector PJ using the model acquisition table (see FIG. 6) of the device information database DB1 (step S56), and the correspondence relationship with each port of the switching hub SW. The room in which the projector PJ is installed is specified from (see FIG. 5) (step S57). Subsequently, the current time is acquired, and the management information 13 (see FIG. 8) is updated using the acquired current time as a use time (step S58).

  Then, the image quality adjustment parameter corresponding to the model and room is acquired from the image quality adjustment parameter acquisition table (see FIG. 7) of the correction information database DB2 (step S59), and the acquired image quality adjustment parameter is converted to the corresponding projector PJ via the switching hub SW. (Step S60).

  In the projector PJ disconnection / termination process, as shown in FIG. 11B, it is determined whether or not there is an IP address release request while waiting for connection of the projector PJ (steps S61 and S62). If there is an IP address release request, the corresponding IP address is released and the DHCP management information 11 is updated (step S63). Then, the IP address release result is transmitted to the projector PJ, and the management information 13 is updated (steps S64 and S65).

  FIG. 12 is a flowchart for explaining in more detail the processing flow of the switching hub SW in the image display system according to the first embodiment. FIG. 12A shows a process when the projector is connected, and FIG. 12B shows a process for a request from the management server SV.

  In the projector connection process, as shown in FIG. 12A, it is determined whether or not there is an IP address assignment request while waiting for a connection from the projector (steps S71 and S72). If there is, the device ID of the connected projector and the connected port are stored (step S73).

  Then, the identification ID of the switching hub SW itself (when there are a plurality of switching hubs) and the IP address assignment request are transferred to the management server SV (step S74). Subsequently, it is determined whether or not there is an IP address assignment result in an IP address assignment result waiting state (steps S75 and S76). If there is an IP address assignment result, the IP address assignment result is transferred to the projector PJ, and the IP address is stored (steps S77 and S78). The projector IP address and device ID, its own port (projector) (The port to which is connected) is stored (step S79).

  Further, as shown in FIG. 12B, the process for the request from the management server SV determines whether there is a request for a device ID while waiting for a request for the device ID of the projector from the management server SV. (Steps S80 and S81) If there is a request for a device ID, the device ID to be transmitted to the management server SV is acquired from the combination of the stored IP address, device ID, and own port (Step S82). The device ID thus transmitted is transmitted to the management server SV (step S83).

  FIG. 13 is a flowchart showing processing at the time of disconnection of the projector of the switching hub SW in the image display system according to the first embodiment. As shown in FIG. 13, it is determined whether there is an IP address release request while waiting for an IP address connection from the projector PJ (steps S91 and S92). If there is an IP address release request, the IP address is determined. The release request is transferred to the management server SV (step S93).

  Then, in the IP address release result waiting state, it is determined whether or not the IP address can be released (steps S94 and S95). If the IP address can be released, the IP address release result is sent to the projector PJ. Transfer (step S96), and update (delete) the stored combination of the projector IP address, device ID, and its own port (step S97).

  As described above, according to the image display system according to the first embodiment, when the projector PJ is used in a predetermined room, the connection terminal (any one of T1, T2,...) Provided in the room to be used. By connecting the projector PJ to the projector PJ, the projector PJ is connected to a port corresponding to the room of the switching hub SW. Accordingly, on the management server SV side, the switching hub SW (switching hubs SW1, SW2,...), The port to which the projector PJ is connected from the port to which the projector PJ is connected as shown in FIG. P1, P2,..., Can be known from a table showing the correspondence between the rooms.

  On the management server SV side, the model is identified from the device ID of the projector PJ by the model acquisition table as shown in FIG. 6, and the image quality adjustment as shown in FIG. 7 is performed based on the identified model and the room to be used. An optimum image quality adjustment parameter is acquired from the parameter acquisition table, and the acquired image quality adjustment parameter is transmitted to the projector PJ.

  Thereby, the projector PJ sets its own color mode based on the image quality adjustment parameter transmitted from the management server SV, so that the projector PJ can project in the color mode optimum for the room where the projector is used. Become.

  In the description so far, the device authentication of the projector PJ is not performed on the management server SV side, but the device authentication of the projector PJ can be performed on the management server SV side. This device authentication can be performed using the MAC address shown in FIG. 6, but the device authentication can also be performed using only the device ID.

  FIG. 14 is a flowchart for explaining processing of the management server SV when device authentication is performed. FIG. 14 corresponds to FIG. 11A, and the overall processing flow is almost the same as FIG. 11A. As shown in FIG. 14, when an IP address assignment request is issued from the projector via the switching hub SW in the projector connection waiting state (steps S101 and S102), connection is made to the switching hub SW using SNMP or the like. Request / acquire the device ID or MAC address of the projector that has been selected (step S103).

  Then, the acquired device ID or MAC address is compared with data on the device information database DB1 (step S104), and it is determined whether or not there is registered data (device ID or MAC address) in the device information database DB1 (step S105). ) If there is registration data, the processing after step S106 is performed. Since the process after step S106 is the same as the process after step S53 of FIG. 11A, the description thereof is omitted here.

  By performing the processing as shown in FIG. 14, device authentication of the projector PJ to be used can be performed. As a result, the management of the projector PJ used by the user can be performed on the management server SV side, which is effective, for example, when the image display system of the present invention is a paid service system.

[Embodiment 2]
The image display system according to the second embodiment is obtained by further adding user authentication to the image display system according to the first embodiment. When performing user authentication, user authentication information such as a user ID stored in the authentication information storage unit 225 (see FIG. 4) of the projector PJ and user authentication information stored in the authentication information database DB3 of the management server SV By comparing.

  FIG. 15 is a diagram showing an example of user authentication information stored in the authentication information database DB3. As shown in FIG. 15, the user authentication information includes user IDs (referred to as USER1, USER2,...) Assigned to a plurality of preregistered users, and passwords set by the users, In addition to these, additional information may be set for each user ID.

  This additional information is information used in the case where some restrictions are set, and for example, a model that can be used by each user, a usable period, a usable location, and the like can be set. Note that the models that can be used by each user can be defined by the device ID of the projector PJ. The password can be set and changed by each user from the operation panel, display screen, or PC (personal computer) of the projector PJ.

  FIG. 16 is a flowchart for explaining the overall processing flow of the image display system according to the second embodiment. The flowchart of FIG. 16 corresponds to the flowchart of FIG. 9, but the switching hub SW is not involved in the processing related to user authentication, and therefore the processing of the switching hub SW is omitted in FIG. 16.

  16 differs from FIG. 9 in the processing on the projector PJ side between step S3 in FIG. 9 (step S123 in FIG. 16) and step S4 in FIG. 9 (step S126 in FIG. 16). A process for transmitting user authentication information to the management server SV (step S124) and a process for determining whether authentication is possible (step S125) are added. In the process on the management server SV side, User authentication information sent from the projector PJ between step S21 in FIG. 9 (step S131 in FIG. 16) and step S22 in FIG. 9 (step S134 in FIG. 16) is the authentication information database DB3 shown in FIG. A process of performing user authentication processing by comparing with the above user authentication information (step S132) and determining whether or not user authentication is possible Since that step S133) is applied only difference is, it will not be described other processing.

  FIG. 17 is a flowchart for explaining in more detail the processing flow of the projector in the image display system according to the second embodiment. The flowchart of FIG. 17 corresponds to the flowchart of FIG. 10, but FIG. 17 differs from FIG. 10 in that step S36 in FIG. 10 (step S146 in FIG. 17) and step S37 in FIG. 10 (step in FIG. 17). Since only the process of transmitting user authentication information to the management server SV (step S147) and the process of determining whether authentication is possible (step S148) are added between the process and S149). Will not be described.

  FIG. 18 is a flowchart for explaining in more detail the flow of processing (connection / setting processing) of the management server in the image display system according to the second embodiment. The flowchart of FIG. 18 corresponds to the flowchart of FIG. 11A, but FIG. 18 differs from FIG. 11A in that step S54 in FIG. 11A (step S164 in FIG. 18) and FIG. Authentication is performed by comparing the user authentication information sent from the projector PJ with the user authentication information on the authentication information database DB3 shown in FIG. 3 during step S55 of FIG. 11 (a) (step S168 of FIG. 18). The process is performed (step S165), the authentication result is transmitted to the projector PJ (step S166), and only the process of determining whether or not the authentication is possible (step S167) is added, so the description of the other processes is omitted. To do.

  The disconnection / termination process in the management server SV is the same as that in FIG.

  By performing such user authentication, it is possible to grasp the usage status of the user's projector on the management server SV side. In addition, by performing both device authentication and user authentication, it is possible to grasp which user uses which projector and how, so the management server SV can easily perform various management. . Therefore, this is effective when the image display system of the present invention is a paid service system.

[Embodiment 3]
The image display system according to the third embodiment stores the user's past image quality adjustment parameter usage status such as which image quality adjustment parameter the user has used in the past as a user history, and the management server SV side In this example, image quality adjustment parameters reflecting the user history are acquired, and the acquired image quality adjustment parameters are transmitted to the projector PJ used by the user. In order to simplify the description, an example applied to the image display system according to Embodiment 1 in which user authentication is not performed will be described.

  FIG. 19 is a flowchart for explaining the overall processing flow of the image display system according to the third embodiment. FIG. 19 is a diagram corresponding to FIG. 9, but the switching hub SW is not involved in the processing related to the acquisition of the image quality adjustment parameter reflecting the user history, and therefore the processing procedure of the switching hub SW is omitted in FIG.

  19 differs from FIG. 9 in the processing on the projector PJ side between step S3 in FIG. 9 (step S183 in FIG. 19) and step S4 in FIG. 9 (step S185 in FIG. 19). The process of transmitting the user ID to the management server SV (step S184 in FIG. 19) is added. In the process on the management server SV side, the process of step S25 in FIG. Processing for acquiring the image quality adjustment parameter use history (image quality adjustment parameters used by the user in the past) of the user based on the user and the projector model and room from the user history table (see FIG. 20) of DB2 (FIG. 19). Step S195) is different only in that the description of other processing is omitted.

  FIG. 20 is a diagram illustrating an example of a user history table capable of acquiring the user history of each user. Such a user history table is assumed to be stored in the correction information database DB2.

  As shown in FIG. 20, the user history table shows each user having a projector (model: EMP-xxx, EMP-yyy) as a user history for each user having user IDs “USER1”, “USER2”,. ,...) Is stored in the conference room A1, the audiovisual room B1, etc., information indicating what image quality adjustment parameters have been used in the past.

  For example, when a user having a user ID of “USER1” uses a projector of the model “EMP-xxx” in the conference room A1, in the past, the “presentation mode” is performed twice and the “dynamic mode” is performed once. The history of image quality adjustment parameter use for the past several times is saved as if it was set.

  FIG. 20 shows an example in which the image quality adjustment parameter usage history for each room of the user is stored for the past several times. In this way, by storing the past several image quality adjustment parameter usage histories, the management server SV presents the image quality adjustment parameter usage history for the several times to the user and allows the user to select from among them. be able to. The management server SV can also check the usage frequency of the image quality adjustment parameter from the user's image quality adjustment parameter use history, select the user's favorite image quality adjustment parameter, and present it to the user.

  In addition, when the user sets the image quality adjustment parameter of the projector, the image quality adjustment parameter setting result can be reflected in the image quality adjustment parameter usage history. Note that the image quality adjustment parameter of the projector can be set by the user by displaying a screen on which the RGB values, brightness, contrast, etc. can be finely adjusted on the display surface, for example. is there.

  FIG. 21 is a flowchart showing the flow of processing on the projector PJ side when the user sets the image quality adjustment parameter of his projector. As shown in FIG. 21, it is determined whether or not the image quality adjustment parameter adjustment mode is being performed while the projector PJ is projecting or waiting for adjustment (steps S201 and S202). The connection with the SV is confirmed (step S203), and the user adjusts the image quality adjustment parameter and determines the adjustment result (step S204). Then, the user ID and the image quality adjustment parameter determined by the user are transmitted to the management server SV (step S205).

  On the management server SV side, it is determined whether or not there is data from the projector PJ while waiting for data from the projector PJ (steps S211 and S212). If there is data from the projector PJ, the user ID transmitted from the projector PJ is determined. Based on the above, the image quality adjustment parameter usage history of the corresponding user is searched from the user history table (see FIG. 20) of the correction information database DB2 (step S213).

  In step S212, whether or not the data from the projector PJ is an image quality adjustment parameter is defined by defining a protocol for transmitting the image quality adjustment parameter from the projector PJ to the management server SV. This can be done by determining whether or not there is.

  Then, the contents of the user history table in the correction information database DB2 are updated with the image quality adjustment parameter transmitted from the projector PJ (step S214).

  As described above, when the user sets the image quality adjustment parameter of his projector himself, the setting result is reflected in the image quality adjustment parameter usage history, so that the management server SV side does not give the user the user's image quality adjustment parameter. An image quality adjustment parameter based on the past image quality adjustment parameter usage history can be transmitted to the user. Thereby, on the management server SV side, not only the projector model and location of use but also the image quality adjustment parameters reflecting the preferences of the user who uses the projector can be transmitted to the projector.

  In the above description, the user history is reflected in the image display system according to the first embodiment in which user authentication is not performed. However, the present invention can be applied to the image display system according to the second embodiment in which user authentication is performed. It is.

[Embodiment 4]
The image display system according to the fourth embodiment is capable of setting image quality adjustment parameters in consideration of the projector use time.

  FIG. 22 is a diagram illustrating an image quality adjustment parameter acquisition table used in the image display system according to the fourth embodiment. In the image quality adjustment parameter acquisition table shown in FIG. 22, a plurality of time zones are set for each model of the projector PJ and the room where the model is used, and image quality adjustment parameters are set corresponding to each time zone.

  In the example of FIG. 22, when a projector of the model “EMP-xxx” is used in the living room, the time zone used is “07: 0 to 15:00”, the “dynamic mode”, and the time zone used is “ In “15:00 to 18:00”, a color mode corresponding to the time zone to be used is set even when the same model is used in the same room, such as “living mode”.

  By using the image quality adjustment parameter acquisition table as shown in FIG. 22, the management server SV acquires the use time of the projector PJ in addition to the model of the projector PJ and the room to be used, and the acquired use time is By determining which time zone it belongs to, the optimum image quality adjustment parameter can be acquired in that time zone. Thereby, even when the user uses the same model in the same room, the projector can be projected in an optimal color mode according to the use time of the projector.

  The use time of the projector PJ is acquired by the management server SV as described in step S58 in FIG. 11A, and the acquired current time is recorded in the management information (see FIG. 8). Therefore, the current time recorded in the management information can be used as the usage time of the projector. Then, by determining to which time zone of the plurality of time zones in FIG. 22 the use time belongs, for example, the image quality adjustment parameter corresponding to the use time can be acquired.

  When the management server SV has a timer function, when the time zone shown in FIG. 22 is reached, the optimum image quality adjustment parameter is automatically set for the time zone, and the set image quality adjustment parameter is set in the projector. It can also be sent.

  The image quality adjustment parameter in each time zone described above may be the image quality adjustment parameter usage history of each user described in the third embodiment. For example, as the image quality adjustment parameters at “07: 0 to 15:00” in FIG. 22, the image quality adjustment parameter usage history for the past several times of the user is “living mode” twice and “dynamic mode” is once. Then, these color modes are set as image quality adjustment parameters for “07: 0 to 15:00”.

  Then, as described in the image display system according to the third embodiment, the management server SV presents the image quality adjustment parameter usage history for several times to the user and allows the user to select from among them, or to select the image quality of the user. It is also possible to check the usage frequency of the image quality adjustment parameter from the adjustment parameter usage history, select the user's favorite image quality adjustment parameter, and present it to the user.

  In this way, by setting the image quality adjustment parameter in each time zone as the image quality adjustment parameter usage history of the user, on the management server SV side, not only the projector model, usage location, and usage time (time zone), but also The image quality adjustment parameter reflecting the preference of the user who uses the projector at the time of use (time zone) can be transmitted to the projector.

  The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention. For example, in each of the above-described embodiments, the image quality adjustment parameter is data for setting a color mode such as “dynamic mode” and “theater mode” for each model and room as shown in FIG. An image quality adjustment parameter that enables more detailed image quality adjustment can also be used.

  FIG. 23 is a diagram showing an example of an image quality adjustment parameter acquisition table capable of acquiring image quality adjustment parameters for more detailed image quality adjustment. As shown in FIG. 23, RGB values, brightness, contrast, and the like are set as image quality adjustment parameters as image quality adjustment parameters corresponding to the projector model and room.

  Each value of RGB is set to a certain value between 0 and 255, for example, and a certain value between 0 to 100% is set as the brightness and contrast, for example. More detailed adjustment of the image quality adjustment parameter of such a projector is performed by, for example, displaying a screen capable of finely adjusting RGB values, brightness, contrast, etc. on the display surface as described above. It is possible to do above.

  In this way, it is possible to set image quality adjustment parameters that enable more detailed image quality adjustments rather than color mode settings such as “dynamic mode” and “theater mode”. Optimal image quality settings can be made.

  In addition, by enabling the setting of more detailed image quality adjustment parameters, when the user finely adjusts each RGB value, brightness, contrast, etc., the more detailed information obtained by the fine adjustment is obtained. The image quality adjustment parameter can be saved on the management server SV side as a user history.

  In the example of FIG. 23, RGB values, brightness, and contrast are shown as more detailed image quality adjustment parameters. However, the present invention is not limited to this, and for example, in addition to RGB, CMY values, hue, and saturation. Color temperature, skin color temperature, gamma correction, etc. can also be set.

  Further, in each of the embodiments described above, it is possible to use a plurality of projectors in one room. In that case, a configuration in which a hub HB is provided in each room as shown in FIG. Good.

  FIG. 24 is a diagram illustrating an example in which a plurality of projectors can be used in one room. In the example of FIG. 24, the conference room A1 will be described as an example, but other rooms can be considered similarly. In this way, in order to enable use of a plurality of projectors in one room (conference room A1), for example, as shown in FIG. 24, a hub HB is provided in the conference room A1, and the projector is provided in this hub HB. By connecting PJ1, PJ2,..., Each projector PJ1, PJ2,... Connected to the hub HB is connected to the port P1 of the switching hub SW.

  In this way, when using a plurality of projectors in the same room, the plurality of projectors are all connected to the same port of the switching hub SW, so even if a plurality of projectors are used in one room, the port Can take the correspondence of the room.

  In each of the embodiments described so far, the ports P1, P2,... Of the switching hub SW are used as network connection means, and the place where the projector PJ is used depends on which port of the switching hub SW the projector PJ is connected to. However, it is also possible to identify the location where the projector is used by using an access point as a network connection means.

  FIG. 25 is a diagram showing a configuration of an image display system that uses an access point to specify a place where a projector is used. 25, the same components as those in FIG. 1 are denoted by the same reference numerals. 25 differs from FIG. 1 in that access points AP1, AP2,... For connecting the projector PJ to the network NW are provided in each room.

  In the image display system shown in FIG. 25, when the projector PJ is used in each room, the projector PJ is connected to the access points AP1, AP2,. Is connected to the management server SV, the management server SV knows which projector PJ is used in which room. Other processing can be performed in the same manner as in the previous embodiments, and thus description thereof is omitted here.

  The connection between the projector used in each room and the corresponding access point may be wired or wireless. In the example of FIG. 25, in the conference room A1 and the common space C1, the projector PJ is wirelessly connected to the access points AP1 and AP3, and in the audiovisual room B1, the projector PJ is connected to the access point AP2 by wire. .

  Further, in each of the above-described embodiments, the management server SV has a function as a DHCP server by providing the DHCP processing unit 12 in the management server SV. However, the management server SV and the DHCP server (denoted by the symbol DV) are used. May be provided separately.

  FIG. 26 is a diagram showing the configuration of the image display system when the management server SV and the DHCP server DV are provided separately. In this way, the configuration is such that the DHCP server DV is provided separately from the management server SV. Also, the above embodiments can be realized. Although FIG. 26 shows an example applied to FIG. 1, it is needless to say that FIG.

  In each of the above embodiments, the projector PJ directly exchanges information with the management server SV. However, the projector PJ is connected to the PC and exchanges information with the management server SV via the PC. May be performed.

  Further, in each of the above-described embodiments, the example in which the image quality adjustment parameter that is optimal for the place of use of the projector PJ and the time of use (time period) of the projector has been described, but only the place of use and use time (time period) are described. For example, the optimum color adjustment parameter may be set in consideration of the content of the content to be projected.

  The present invention can also create an image quality adjustment parameter setting program for the management server according to the present invention described above, and record the image quality adjustment parameter setting program on various recording media. Therefore, the present invention includes a recording medium on which the image quality adjustment parameter setting program of the management server is recorded. Further, an image quality adjustment parameter setting program for the management server may be obtained from the network.

1 is a diagram illustrating a configuration of an image display system according to a first embodiment. FIG. 2 is a diagram for explaining the correspondence between each port P1, P2, P3,... Of the switching hub SW and each room (the conference room A1, the audiovisual room B1, and the common space C1 in FIG. 1). The figure which shows the structure of management server SV as an apparatus control side. The figure which shows the structure of the projector PJ used by the user side. The figure which shows correspondence of switching hub SW and port P1, P2, ... provided in the said switching hub SW, and a room. The figure which shows an example of the model acquisition table which apparatus information database DB1 of management server SV has. The figure which shows an example of the image quality adjustment parameter acquisition table which correction information database DB2 has. The figure which shows an example of the management information which management server SV has. 3 is a flowchart for explaining the overall processing flow of the image display system according to the first embodiment. 5 is a flowchart for explaining in more detail the flow of processing of the projector in the image display system according to the first embodiment. 6 is a flowchart for explaining in more detail the processing flow of the management server SV in the image display system according to the first embodiment. 6 is a flowchart for explaining in more detail the processing flow of the switching hub SW in the image display system according to the first embodiment. 5 is a flowchart showing processing at the time of disconnection of the projector of the switching hub SW in the image display system according to the first embodiment. The flowchart explaining the process of management server SV in the case of performing apparatus authentication. The figure which shows an example of the user authentication information preserve | saved at authentication information database DB3. 9 is a flowchart for explaining the overall processing flow of the image display system according to the second embodiment. 9 is a flowchart for explaining in more detail the flow of processing of a projector in the image display system according to the second embodiment. 9 is a flowchart for explaining in more detail the flow of processing (connection / setting processing) of the management server in the image display system according to the second embodiment. 10 is a flowchart for explaining the overall processing flow of the image display system according to the third embodiment. The figure which shows an example of the user history table which can acquire the user history of each user. 7 is a flowchart showing a process flow on the projector PJ side when the user sets the image quality adjustment parameter of his projector. FIG. 10 is a diagram illustrating an image quality adjustment parameter acquisition table used in the image display system according to the fourth embodiment. The figure which shows an example of the image quality adjustment parameter acquisition table which can acquire the image quality adjustment parameter for more detailed image quality adjustment. The figure explaining the example which enables use of a some projector in one room. The figure which shows the structure of the image display system which specifies the use place of a projector using an access point. The figure which shows the structure of the image display system at the time of providing management server SV and DHCP server DV separately.

Explanation of symbols

  PJ ... projector, SW ... switching hub, P1, P2, P3 ... port, SV ... management server, NW ... network, DB1 ... device information database, DB2 ... correction information Database, DB3 ... Correction information database

Claims (16)

An image display system having an image display device and a management server capable of setting image quality adjustment parameters for the image display device,
The management server has a function of specifying a use location of the image display device, a function of acquiring an image quality adjustment parameter corresponding to the specified use location, and a function of giving the acquired image quality adjustment parameter to the image display device. An image display system comprising: The image display system according to claim 1,
The image display system, wherein the image display device and the management server are connected via a network. The image display system according to claim 2,
An image display system comprising a network connection management unit that enables an address on the network to be assigned to an image display device connected to the network. The image display system according to claim 3,
The image display system, wherein the network connection management unit is included in the management server. In the image display system according to any one of claims 2 to 4,
A network connection means capable of connecting the image display device to the network is provided corresponding to each use place of the image display device. The image display system according to claim 5,
The image display system, wherein the network connection means is a port provided in a switching hub. The image display system according to claim 5,
The image display system, wherein the network connection means is an access point. In the image display system in any one of Claims 5-7,
The management server includes information indicating a correspondence between the network connection unit and the place of use, information indicating unique information given to the image display device and a model of the image display device, and a model of the image display device And an image display system comprising information indicating a correspondence between a use location of the model and an image quality adjustment parameter corresponding to the use location. In the image display system in any one of Claims 5-7,
The management server includes information indicating a correspondence between the network connection unit and the place of use, information indicating unique information given to the image display device and a model of the image display device, and a model of the image display device An image display system comprising information indicating a correspondence between a use place of the model, a use time of the image display device at the use place, and an image quality adjustment parameter corresponding to the use time. The image display system according to claim 8 or 9,
The image display system, wherein the image quality adjustment parameter is an image quality adjustment parameter used in the past. In the image display system in any one of Claims 1-10,
The image display system according to claim 1, wherein the image quality adjustment parameter is data for setting one of a plurality of color modes prepared in the image display device. In the image display system in any one of Claims 1-10,
The image display system, wherein the image quality adjustment parameter is data capable of setting in detail the degree of color adjustment of the image display device. In the image display system according to any one of claims 1 to 12,
The image display system, wherein the management server performs device authentication based on unique information given to the image display device. In the image display system in any one of Claims 1-13,
The image management system, wherein the management server performs user authentication based on unique information given to a user who uses the image display device. The management server used in an image display system having an image display device and a management server capable of setting image quality adjustment parameters for the image display device,
A function for specifying a use place of the image display device;
A function to acquire image quality adjustment parameters corresponding to the specified use location;
A function of giving the acquired image quality adjustment parameter to the image display device;
A management server characterized by comprising: An image quality adjustment parameter setting program of a management server that causes the management server used in an image display system having an image display device and a management server to set an image quality adjustment parameter to the image display device to execute the setting of the image quality adjustment parameter Because
Identifying a use place of the image display device;
Obtaining an image quality adjustment parameter corresponding to the specified use location;
Providing the acquired image quality adjustment parameter to the image display device;
An image quality adjustment parameter setting program for a management server, comprising: