JP2019047356A - Display device - Google Patents

Abstract

To solve the problem in which a user needs to perform connection setting every time reconnection is performed if projectors performing multi-projection become unable to project due to failure or deterioration.SOLUTION: A projection display device (projector) includes: communication means for communicating with another apparatus; configuration management means for managing installation information on apparatuses performing multi-projection; operation setting means for setting operation as a master or slave; and connection information management means (DHCP) for managing connection information on operating display devices. When a display device operating as a slave joins a multi-projection configuration, connection information is assigned to the target display device using the configuration management means and connection information management means.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a display device.

  As a method of using a projector, there is known a projection method (multi-projection) in which an image is formed by connecting projected images of a plurality of projectors. There are various methods for transmitting the image data, such as a method using a distributor and a method of transferring images between projectors. In the latter, there is a projector (master) that controls the entire system, and the master is realized by a method of distributing control information, image information, and the like to other projectors (slave). Hereinafter, the latter configuration is assumed.

  When a master and a slave transmit and receive information, it is common to place projectors constituting a multi-projection on the same network (group) and connect them with a network cable. In this method, it is necessary to set and hold connection information related to the target projector, and the information is set by the user. Here, when a projector constituting a multi-projection becomes impossible to project due to a failure or deterioration, it is necessary to reconnect the projector. In such a situation, in order to enable continuous multi-projection, it is necessary to have a mechanism for supporting the reconnection of the projector as a system so that the same setting can be performed before and after the reconnection.

  In relation to the above-described contents, Patent Document 1 discloses a system for monitoring and updating the state of a projector.

JP 2010-191972 A

  In the prior art, the projector needs to be linked on the network, and is controlled through the network, so that it is not possible to assist at the time of reconnection and a user operation is required.

  Therefore, an object of the present invention is to reduce a user's operation load by automatically setting connection information necessary for reconnecting a projector.

  In order to achieve the above object, the display device of the present invention includes a communication means for communicating with other equipment, a configuration management means for managing installation information of equipment constituting a multi-projection, and a master or slave. An operation setting means for setting operation and a connection information management means for managing connection information of an operating display device, and when a display device operating as a slave participates in a multi-projection configuration The configuration management means and the connection information management means are used to assign connection information to a target display device.

  According to the present invention, it is possible to reduce a user's operation load by automatically setting connection information when a projector is reconnected.

The block diagram which shows the structure of the projector which is a display apparatus Diagram showing an overview of the projection state Control flow chart relating to projection of the present invention in Embodiment 1 The figure which shows the example of the menu which sets the arrangement pattern Diagram showing correspondence between placement pattern and IP address The figure which shows the state where one projector was removed at the time of multi-projection Control flow diagram relating to projection of the present invention in Embodiment 2 The figure which shows the state where two projectors were removed at the time of multi projection Control flow diagram relating to projection of the present invention in Embodiment 3 FIG. 4 is a control flow diagram relating to the projection of the present invention in Embodiment 4.

  Hereinafter, examples of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiments. The embodiments of the present invention show preferred modes of the invention and do not limit the scope of the invention.

Example 1
First, the configuration of the projector 100 which is a projection apparatus will be described using the block diagram of FIG. 101 is a CPU that controls the overall behavior of the projector 100, 102 is a ROM for storing a control program executed by the CPU 101, and 103 is a RAM that temporarily stores a control program and data as a work memory. is there. An image processing unit 104 performs a process for forming a projection image. Reference numeral 105 denotes a network IF (Interface) for communicating with an external device (not shown) via a LAN.

  Reference numeral 106 denotes a user IF that receives user input from the remote control 106c via the operation key 106a or the remote control light receiving unit 106b. Reference numeral 107 denotes a projection control unit for outputting an image. A projection unit 108 includes a liquid crystal panel, a driving driver for the liquid crystal panel, a driving system such as a lens and a zoom, and a light source. Reference numeral 109 denotes an input unit for receiving an external video signal. The projector 100 includes an internal bus 110 that connects these elements. As a basic operation of the projector 100 in the present embodiment, an image obtained by converting an input image transmitted from the outside into a format that can be projected by the input unit 109 or an image received through the network IF 105 is predetermined by the image processing unit 104. The image processing is applied. Then, it is transmitted to the projection image control unit 107 and projected by the projection unit 108.

  FIG. 2 is an overview of multi-projection by the projector 100 as a master and the projectors 200, 300, and 400 as slaves. Each slave has the same configuration as the master. In general, in order to join a plurality of projection images, if the positions are not strictly aligned, joints are visually recognized in the image, and the quality is deteriorated. Therefore, an edge blending process is performed to make the joint inconspicuous by superimposing a part of the projected image and lowering the luminance of the superimposed part. By supplying the image 500 to the master projector 100, the CPU 101 of the master projector transmits the image 500 to each slave projector through the network IF 105.

At the same time, the image position information of each slave projector in consideration of the edge blending process described above is transmitted. The CPU 101 of the master projector and each slave projector controls its own image processing unit 104 to perform decoding and edge blending processing of the image 500, thereby creating a projection image. Each projector projects the created projection image, thereby projecting an integrated image 501.
The characteristic operation of the present invention will be described with reference to FIGS.

  In step S600 of the control flow in FIG. 3, the user selects a projector to be operated as a master or slave by a menu (not shown) operation for selecting that the user is neither master, slave, or neither using the operation key 106a or the remote controller 106c. Then, the CPU 101 of each projector is notified via the user IF 106. The CPU 101 of each projector has a control flow after S601a shown in FIG. 3 when the master is selected, and a control flow after S601b when the slave is selected.

  The CPU 101 of the master projector of the projector selected as the master reads the setting information stored in the ROM 102, and activates a DHCP (Dynamic Host Configuration Protocol) server function. Note that the CPU 101 of each projector uses the projection control unit 107 and the projection unit 108 to project a GUI (Graphical User Interface) including the menu described above to the user. Also, it is assumed that each projector is connected by a network cable, but no other device is connected.

  As described above, when the user selects a master or a slave, the CPU 101 of each projector stores a setting value indicating that the projector 101 is set as a master or a slave in the RAM 103. If neither the master nor the slave is in the state of participating in the multi-projection, the CPU 101 of each projector determines its own state by reading the value stored in the RAM 103.

  A control flow of the master projector 100 will be described. In step S601a, the CPU 101 of the master projector displays a menu for allowing the user to determine an arrangement pattern as shown in FIG. The arrangement pattern of the pattern setting screen 700 and options 701 to 704 shown in FIG. 4 is stored in the ROM 102 and is displayed by reading it. The number of patterns is an example, and is not limited to this number. When the user selects one of the patterns 701 to 704 using the operation key 106a or the remote controller 106c, the CPU 101 stores the selected pattern in the RAM 103.

  In this embodiment, it is assumed that a 2 × 2 pattern 702 is selected. Similarly, the CPU 101 of the master projector holds a transmission destination list 800 as shown in FIG. When the selected pattern is 2 × 2, four projectors are required, so the list shown in 801a is secured on the RAM 103 and includes the master itself (here, 192.168.254.1). Four destination IP addresses can be assigned, and the process proceeds to S602a. The assignment refers to associating the divided projection areas 1 to 4 shown in the pattern 702 with information (IP address in this embodiment) for specifying the projector that is responsible for each projection area.

  If the CPU 101 of the master projector receives an inquiry from the slave via the network IF 105 in S602a, the process proceeds to S602a. If not received, the process proceeds to S606a.

  In S603a, the CPU 101 of the master projector reads the allocation list 801a stored in S601a from the RAM 103, and checks whether there is an unallocated projection area. If there is an unallocated projection area, the process proceeds to S604a, and if not, the process proceeds to S602a.

  In S604a, the CPU 101 of the master projector transmits an IP address assignment proposal (DHCP Offer) to the request from the slave through the network IF 105 (here, 192.168.254.2). When the master projector CPU 101 receives the response (DHCP Request) received in S602b of the control flow of the slave projector described later, the connection information is determined and transmitted (DHCP Ack). After completion, the CPU 101 of the master projector transitions to S605a.

  In step S <b> 605 a, the CPU 101 of the master projector assigns the slave IP address determined in step S <b> 604 a to the list 801 a stored in the RAM 103. The assignment here is associating the projection area and the IP address in the arrangement pattern set in S601a as described above. That is, the master IP address 192.168.254.1 is associated with the projection area 1, the slave IP address 192.168.254.2 is associated with the projection area 2, and the list is updated as indicated by 801b.

  The CPU 101 of the master projector transmits the assigned position (projection area 2 in this embodiment) assigned to the slave. The CPU 101 of the master projector performs the steps from S602a to S605a on each slave to determine the IP address and assign the projection area, and the list is updated to the state of 801c. When there is no connection request from the slave, the process proceeds from S602a to S606a as described above.

  In step S <b> 606 a, the CPU 101 of the master projector transmits a packet for confirming whether or not the slave registered in the allocation list stored in the RAM 103 can be connected through the network IF 105. If there is no response from the slave, it is considered that the slave has left, and the process proceeds to S607a. If there is a response from each slave, the process proceeds to S608a.

  In step S <b> 607 a, the CPU 101 of the master projector deletes connection information (IP address) corresponding to the position of the slave whose connection has not been confirmed in step S <b> 606 a from the assignment list stored in the RAM 103. After deletion, the process proceeds to S608a.

  In step S <b> 608 a, the CPU 101 of the master projector requests each slave to transmit resolution information necessary for projecting the integrated image 501. The CPU 101 of the master projector stores the received resolution information in the RAM 103. After that, based on the projection target image 500, the allocation list read from the RAM 103, the arrangement pattern 702, and the resolution information received from each slave, the size of the projection image that is formed when the four projectors are combined is calculated. From the calculation result, coordinate calculation of which area in the image 500 each slave projects is performed, the result is stored in the RAM 103, and the process proceeds to S609a.

  In S609a, the CPU 101 of the master projector transmits the coordinate information calculated in S607a and the image 500 to each slave through the network IF 105. After transmission, the process proceeds to S610a.

  In step S610a, the CPU 101 of the master projector creates a projection image by controlling its own image processing unit 104 to perform decoding and edge blending processing of the image 500 as in the multi-projection configuration described above. The projection image is transmitted to the projection image control unit 107 and projected by the projection unit 108. After the projection processing, the process proceeds to S611a.

  In step S611a, the CPU 101 of the master projector inquires of the user IF 106 whether the user has selected an operation for ending the projection as intended by the user using the operation key 106a or the remote controller 106c. If not completed, the process proceeds to S602a and the process is continued.

  Next, the control flow of the slave projector will be described. In step S <b> 601 b, the CPU 101 of the slave projector transmits an inquiry (DHCP discover) to a device connected through the network IF 105 as a DHCP client. At that time, by reading the value stored in the RAM 103, a packet indicating that it participates as a slave device is added. After transmission, the process proceeds to S602b.

  In S602b, the CPU 101 of the slave projector receives the allocation proposal (DHCP Offer) transmitted in S604a in the master control flow, and responds to use the information through the network IF 105 (DHCP Request). When the determined connection information is received from the master that has received the response (DHCP Ack), the CPU 101 of the slave projector receives the determined connection information, updates its own setting, and transitions to S603b. If communication with the master is not possible, the process ends.

  In step S <b> 603 b, the CPU 101 of the slave projector receives the assigned position transmitted in step S <b> 605 a in the master control flow and stores it in the RAM 103. After storing, the process proceeds to S604b.

  In S604b, the CPU 101 of the slave projector reads out its own display resolution requested in S608a in the master control flow and the above-described edge blend superimposition resolution from the ROM 102, and transmits them to the master through the network IF 105. After transmission, the process proceeds to S605b.

  In S605b, the CPU 101 of the slave projector receives the coordinate information and the image 500 transmitted from the master. After reception, the process proceeds to S606b.

  In step S606b, the CPU 101 of the slave projector performs processing on the image 500 by controlling the image processing unit 104 as in the master control flow, and transmits the image to the projection control unit 107 and the projection unit 108 to perform projection. After the projection processing, the process proceeds to S607b.

  In S607b, the CPU 101 of the slave projector performs the same process as in S611a in the master control flow. If not completed, the process proceeds to S604b and the process continues.

  The master and each slave project the divided areas of the integrated image 501 according to the control flow described above, thereby realizing multi-projection as shown in FIG.

  Here, it will be described that the user burden is reduced by the present invention when the reconnection of the projector as described in the problem occurs. As an example, assume that the projector 400 has failed as shown in FIG. The reconnection here is for the slave projector. As described in S607a, when the projector 400 is not connected, it is deleted from the assignment list as described in the master control flow S607a, and the four connection targets shown in the pattern 702 become empty.

  Thereafter, when the projector 401 is connected as a slave on the network, the CPU 101 executes the process described in S601b of the control flow. When the master CPU 101 receives a connection request from the projector 401 in step S602a, the master CPU 101 newly assigns the unassigned 4 as described in steps S604a and S605a. Thereafter, a connection with the projector 401 is established, and it becomes possible to participate in projection. The user only needs to perform a physical connection process, and the projector can perform settings related to the connection and resume multi-projection.

(Example 2)
The control flow shown in FIG. 3 of the first embodiment can be modified as shown in FIG. In the first embodiment, the master sequentially assigns the free areas. However, as shown in FIG. 8, when two or more projectors request assignment at the same time, the assignment with the physical projector position may become unintended assignment. Therefore, the problem can be solved by allowing the user to assign which area the target projector is in charge of from the pattern 702 before making a connection request from the slave to the master in S601b of FIG.

  In the present embodiment, a slave control flow will be described first. In S901b of FIG. 7, the CPU 101 of the slave projector stores in the RAM 103 the result of the user selecting the assigned area using the operation key 106a or the remote control 106c from a menu (not shown), and the process proceeds to S902b.

  In step S902b, the CPU 101 of the slave projector reads out the value stored in the RAM 103 in step S901b and sends a packet indicating the assigned position request to the master in addition to the packet indicating that the slave projector participates as a slave device described in step S601b. Send. After transmission, the process proceeds to S903b. The control flow after S903b is the same as the control flow after S602b shown in the first embodiment.

  Next, the difference in the control flow in the master will be described. After the step of confirming the non-allocation area shown in S903a (= S603a in FIG. 3), step S904a for confirming the assigned position request from the slave is added. In this embodiment, the packet indicating the assigned position request transmitted in S902b in the slave control flow is received in S902a, and the value is stored in the RAM 103.

  In S904a, the CPU 101 of the master projector confirms whether or not the allocation is made by referring to the list stored in the RAM 103 in response to the request for the assigned area from the slave specified in S901b of the slave control flow described above. To do. If it has been allocated, the process proceeds to S902a, and if it has not been allocated, the process proceeds to S905a. Since S905a is the same as the process of S604a described above, a description thereof will be omitted. After the processing of S905a, the process proceeds to S906a.

  In step S906a, the CPU 101 of the master projector associates the projection area with the IP address in the same manner as in step S605a described in the first embodiment. In the first embodiment, the master assigns an arbitrary projection area to the slave as the assigned position, but in this embodiment, connection information (IP address) is assigned based on the assigned position of the slave confirmed in S904a and stored in the RAM 103. To do.

(Example 3)
In the examples shown in the first and second embodiments, since the master assigns an arbitrary IP address, the slave does not need to recognize that information. However, considering that the master and slave are operated from the outside via the network, when the connection information changes due to the replacement of the aircraft, the operation unit also needs to be changed. Therefore, the assigned IP address is held based on the arrangement pattern, and is used when a new connection occurs.

  That is, the IP address in S607a is not deleted from the allocation list, and it is stored whether connection with the currently registered projector is possible. According to the control flow of FIG. 3 shown in the first embodiment, the master side adds S1004a, S1005a, and S1006a after the non-allocation area confirmation step shown in S1003a (= S603a in FIG. 3), and S607a in FIG. The process of S1009a corresponding to is changed. The contents of these steps will be described.

  In step S1004a, the CPU 101 of the master projector refers to the assignment list stored in the RAM 103 and confirms whether an IP address has been assigned to the position requested from the slave. If it has been allocated, the process proceeds to S1005a, and if it has not been allocated, the process proceeds to S1006a.

  In S1005a, the CPU 101 of the master projector transmits to the slave that has issued a new request using the IP address registered at the time of previous assignment, and the process proceeds to S1007a.

  In S1006a, the CPU 101 of the master projector newly sets an IP address, transmits to the slave, and proceeds to S1007a.

  In S1009a, the CPU 101 of the master projector cancels the assignment corresponding to the position of the slave whose connection could not be confirmed in S1006. In S607a in the control flow of FIG. 3, the assignment is canceled by deleting the IP address, but in this embodiment, the value indicating that the connection is not connected is stored in the RAM 103 while the IP address is retained. To do.

Example 4
As in the second embodiment with respect to the first embodiment, the third embodiment is modified so that the slave requests the assigned area. FIG. 10 is obtained by adding S1104a, which is processing equivalent to S904a, and S1101b, which is processing equivalent to S901b, to the control flow of FIG.

(Other examples)
Needless to say, the object of the present invention can also be achieved by supplying a storage medium storing software program codes for realizing the functions of the above-described embodiments to the apparatus. At this time, the computer (or CPU or MPU) including the control unit of the supplied apparatus reads and executes the program code stored in the storage medium. In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the program code itself and the storage medium storing the program code constitute the present invention.

  As a storage medium for supplying the program code, for example, a flexible disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used. Further, the OS (basic system or operating system) running on the apparatus performs part or all of the processing based on the instruction of the program code described above, and the functions of the above-described embodiments are realized by the processing. Needless to say, cases are also included.

  Further, the program code read from the storage medium may be written into a memory provided in a function expansion board inserted into the apparatus or a function expansion unit connected to the computer, and the functions of the above-described embodiments may be realized. Needless to say, it is included. At this time, based on the instruction of the program code, the CPU or the like provided in the function expansion board or function expansion unit performs part or all of the actual processing.

  100..Projector, 101..CPU, 102..ROM, 103..RAM, 104..Image processing unit, 105..Network IF, 106..User IF, 107..Projection control unit, 108..Projection Part, 109 ... input part

Claims (5)

Communication means for communicating with other devices;
Configuration management means for managing installation information of devices constituting the multi-projection;
Operation setting means for setting to operate as a master or slave;
Connection information management means for managing connection information of the operating display device,
A display characterized in that, when a display device operating as a slave participates in a multi-projection configuration, connection information is assigned to the target display device using the configuration management means and the connection information management means. apparatus.   The display device according to claim 1, further comprising participation setting means for setting that the device participates in multi-projection, and transmitting and receiving the participation information using the communication means.   3. The display position setting means for setting its own display charge position in a multi-projection configuration is provided, and information on the display charge position is transmitted and received using the communication means. Display device.   The display device operating as a master is separated from the multi-projection configuration in the display device that operates as a master and includes an association unit that associates them based on the configuration management unit and the connection information management unit. The connection information of the display device is held at the time of connection, and the connection information of the display device that has been previously removed is assigned by the associating means at the time of participation. Display device.   When a display device operating as a master participates in a multi-projection configuration when the display device operating as a slave participates in the multi-projection configuration, it is determined that there is no room for participation in the multi-projection configuration. The display device according to claim 1, wherein a slave is not allowed to participate.