JP2009129411A - Projector system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projector system, capable of simplifying editing operation of a content that is a projected image by automatically generating, when altering the content, a content which alters the content only by performing a predetermined operation, and to provide a projector system, capable of performing effective data formation by communicably connecting a plurality of projectors, and comparing a content that is a projected image on each projector. <P>SOLUTION: The system includes a control means which provides a predetermined change to an object for each projected image on a plurality of projectors. The control means controls so that the contents of the objects to which the predetermined change is provided are not overlapped between the projected images of the plurality of projectors. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a projector system in which a plurality of projectors can be used to compare, for each projection image of a projector, a content object that is changed as a projection image on a projection plane.

  In the conventional projection display device, the edited content is projected onto the projection plane via application software to edit the content desired by the operator of the projection display device. (For example, refer to Patent Documents 1 and 2). In these conventional devices, a single projection display device can be used to compare the content desired by the operator with the content after the data of the content projected on the projection plane has been edited. The editing process was performed.

  In addition, these conventional ones can compare the content desired by the operator with the content after the content data projected on the projection plane has been edited, but only for color-related editing. Therefore, editing related to content data was very limited.

JP 2004-139496 A JP 2004-86662 A

  Any of the above-described conventional projection display devices (Patent Document 1 and Patent Document 2) is content desired by an operator as content to be projected onto a projection plane via application software using a single projection display device. And the content after the content data projected on the projection plane is edited.

  However, using the above-described apparatus, the content of the edited data, for example, the content of the edited data that changes the color of an object such as a graphic included in the content is projected, and the content desired by the operator is projected. When comparing with the edited content projected on the surface, since the single projection display device is used, first, the operator performs editing to change the color of the object included in the content, and then In order to determine whether or not the content is desired by the operator, the content that is the projection image must be confirmed. Furthermore, if the content is not desired by the operator, it is necessary to repeat the work of changing the color of the object and confirming the edited content, which causes a problem that it takes much labor.

  In addition, since a single projection display device is used, only the single content projected on the projection plane can be confirmed, and therefore the content before and after editing that changes the content cannot be compared. Therefore, it is very difficult to find the optimum content, and there is a problem that labor is required.

  Furthermore, in order to change the content using the above-described projection display device, it depends on the function of the software that reads the content data and generates the content that is a projection image. That is, in a conventional projection display device having software functions such as an animation function or an editing function, editing must be performed each time a predetermined change is made to the content. As a result, it has not been possible to satisfy the user's request to compare the contents projected as the respective projected images by gradually changing the changes given to the contents.

  The present invention has been made in view of the above-described problems, and the object of the present invention is to automatically change the content that is a projected image to the content only by performing a predetermined operation. Accordingly, it is an object of the present invention to provide a projector system that can generate content that changes, and as a result, can simplify the editing operation of the content.

  Also, by connecting multiple projectors in a communicable manner, it is possible to simultaneously project content that has been changed as a projected image for each projector, and it is effective by comparing the content that is the projected image for each projector. It is an object of the present invention to provide a projector system capable of creating a simple document.

  In order to achieve the above object, the present invention includes control means for giving a predetermined change to an object for each projection image of a plurality of projectors, and the control means has a plurality of contents of the object having given the predetermined change. The projectors are controlled so as not to overlap each other.

Specifically, the projector system according to the present invention is:
A projector system having a plurality of communicable projectors that project content configured by an object onto a projection surface as a projection image,
Control means for giving a predetermined change to the object for each projection image projected from each of the plurality of projectors,
The control means controls the content of the object having given the predetermined change to be different among the projection images of the plurality of projectors.
It is characterized by that.

  The invention of the projector system according to the present invention can project a projection image including an object given a predetermined change by the control means onto the projection plane. Note that the control means can not only give a predetermined change to one object among the objects of the projection image but also give a predetermined change to two or more objects.

  In addition, since the control means controls the content of the object that has given a predetermined change between the projection images of the plurality of projectors, the projection image of the content including the object that has been changed simultaneously by the plurality of projectors. Can be projected. Accordingly, it is not necessary to compare changes in objects with a single projector, and the work can be simplified.

  Furthermore, since the projection image corresponding to each projector can be compared by the control means, it is possible to efficiently compare the projection image of the content including the object having a predetermined change with a small number of projectors. Therefore, it is possible to create effective materials.

  Here, the “object” is not limited to an object such as a graphic object, a character object, or a background object included in the projection image projected from the projector, and does not affect other image parts of the projection image and is independent. Independent image elements that can be deformed are also included. For example, the independent image element includes a layer object included in one image object constituted by a set of a plurality of layers, a specific character string object whose font, size, color, etc. can be changed among character objects. .

  Further, “giving a predetermined change” means giving a predetermined change to an object for each projection image projected from each of a plurality of projectors. “Control differently” means to instruct or adjust each projector so that the contents of the object given a predetermined change by the control means are different among the projection images of a plurality of projectors. Say.

  The control means includes an image generation means for generating the content as a projection image from the image data as the content data, and an editing means for giving a predetermined change to the content object based on the image data when generating the projection image. With. Therefore, the image generating means has a viewer function, and the editing means has an editing function.

  The projector system according to the present invention preferably further includes designation means for designating an object, an element indicating the attribute of the object, and a parameter for giving a predetermined change to the element of the object.

  According to the above-described invention, it is possible to specify the element and the parameter after specifying the change given to the element of the object, that is, the object to which the predetermined change is given by the specifying means. Therefore, it is possible to perform control to give a predetermined change to the element of the object by the above-described control means so that the content of the object differs among the projection images of the plurality of projectors.

  Further, according to the above-described invention, since the designation means designates the object, the element, and the parameter, the elements of the editing work are organized into these three elements, and the editing work can be simplified.

  Here, “element” refers to an attribute of an object, and is selected from a group of object information such as color information, size information, font information, rotation information, position information, aspect ratio information, and other information that can change an object. Element. “Parameter” means a parameter for giving a predetermined change to an element of an object. Specifically, in the case of a graphic object, color information is used as an element, the red color is used as a parameter, and in the case of a character object, font size information is used as an element, and the size is increased by 2 points as a parameter.

  As the projector system according to the present invention, the plurality of projectors include one projector and at least one other projector that can communicate with the one projector, and the control means includes the object, element, and parameter designated by the designation means. It is preferable to determine change information indicating a predetermined change based on and transmit the change information from one projector to another projector.

  According to the above-described invention, since the control means transmits the change information from one projector to another projector, the control means can perform control to give a predetermined change by one projector (hereinafter referred to as “reference projector”).

  Here, since “a plurality of projectors includes one projector and at least one other projector that can communicate with one projector”, each of the other projectors is based on one projector (reference projector). A star-shaped network that can communicate with the projector can be configured.

  The “change information” is information determined by the control means and giving a predetermined change to the object. Specifically, for each projection image of the projector, the object, the element (attribute), and the predetermined change are changed. Information including information consisting of specific levels of parameters to be given.

  In order to project content including an object given a predetermined change from each projector in a network in which the projectors are in a star-like relationship, image data serving as a reference before the predetermined change is given to each projector Change information is required. Therefore, the control means transmits image data in advance, and transmits change information from one projector to another projector. As a result, the control means of another projector can change the content object by the image data and the change information by the editing means, and can project the content as a projected image by the image generation means.

  Note that the change information may be the projection image data itself after the change. In this case, the reference projector generates image data with a predetermined change for each projection image of each projector, and transmits the image data to other projectors. Therefore, in such a case, it is not necessary to provide editing means in the control means of the projector.

  In the projector system according to the present invention, it is preferable that the control means determines the change information based on the number of the plurality of projectors.

  According to the above-described invention, the control unit determines the change information based on the number of the plurality of projectors in the network in which each of the other projectors is configured to be communicable with the reference projector with the reference projector as the center. The change information reflecting the total number of vehicles can be determined. Therefore, variations of projection images including objects to which a predetermined change has been given are widened, enabling more efficient comparison and effective material creation.

  In the projector system according to the present invention, the communication order of the plurality of projectors is determined from the upstream projector to the downstream projector. Each of the plurality of projectors includes control means, and the control means includes an object designated by the designation means. Preferably, the change information indicating the predetermined change based on the element and the parameter is determined so that the content of the object that has given the predetermined change differs between the projection images of the projector and the projector upstream of itself.

  According to the above-described invention, since the control means of the plurality of projectors determines the change information, it is possible to control to give a predetermined change to the object regardless of the number of projectors.

  Since the communication order of the plurality of projectors is determined from the upstream projector to the downstream projector, it is possible to configure a network in which communicable projectors are in a serial relationship.

  In a network in which projectors are in a serial relationship, in order to project content including an object to which a predetermined change is given from each projector, an image that becomes a reference before the predetermined change is given to each projector Data, change information, and change history information including specific levels of parameters of objects of the projection images of all projectors upstream of the projector itself and its own projector are required.

  According to the above-described invention, it is possible to project a projection image including an object given a predetermined change by the control means onto the projection plane. In addition, since the control means controls the contents of the object that has given a predetermined change to be different among the projection images of the plurality of projectors, the projection images of the contents including the objects that have been changed simultaneously are projected by the plurality of projectors. can do. Accordingly, it is not necessary to compare changes in objects with a single projector, and the work can be simplified.

  Furthermore, since the control unit can compare the projection images corresponding to the projectors, it is possible to efficiently compare the projection images of the content including the object having the predetermined change with a small number of projectors. Therefore, it is possible to create effective materials.

<<<< First Embodiment >>>>
A projector system 100 according to a first embodiment will be described with reference to FIGS. In the projector system 100 according to the first embodiment, a plurality of projectors 110 that project content onto a projection surface as a projection image are connected to be communicable. Specifically, as shown in FIG. 3, a star-like network in which each of the other projectors (PJ2, PJ3, PJ4) can communicate with the reference projector PJ1 is configured with the reference projector PJ1 as the center.

  Then, reference projector PJ1 changes the object so that the contents of the object included in the projection image projected from each projector are different among the projection images of the plurality of projectors. Specifically, first, in the reference projector PJ1, change information that gives a predetermined change to the object is generated for each projector, and the generated change information and reference image data before the predetermined change is given, The reference projector PJ1 transmits to the other projectors (PJ2, PJ3, PJ4). In reference projector PJ1, content based on image data is projected as a projected image onto a projection plane by a viewer function provided in the projector.

  Next, each projector that has received the change information and the image data uses the change information to perform an edit that gives a predetermined change to the content object based on the image data. The content is projected onto the projection plane as a projection image, and the content of the object included in the projection image projected from each projector is controlled to be different (however, objects that are not subject to change information are the same in each projection image) To be controlled).

<<< Configuration of Projector 110 >>>
An external view of the projector 110 is shown in FIG. As shown in FIG. 1, a projection lens 111 is provided on the front surface of the housing of the projector 110. Inside the projector 110, a projection image is projected from a projection lens 111 onto a screen (projection surface) 140 by projecting image light in which light from a light source is modulated by a light modulation element.

  A control panel 116 for operating the projector 110 is provided on the upper surface of the housing. The control panel 116 includes, for example, a menu button (not shown), up / down / left / right direction keys, and an enter key. For example, the operator can adjust or set the projected image by operating the control panel 116 while viewing the menu screen projected on the screen 140.

  An interface 122 for connecting an external device is provided on the rear surface of the housing. A video source such as a personal computer, a DVD player, a digital camera, or a video game machine can be connected through the interface 122. In addition, a connection connector of a communication unit for communicating with other projectors is also provided on the back surface. In the case of a star connection, a plurality of connection connectors are provided, and in the case of a series connection, two connection connectors are provided.

  FIG. 2 is a block diagram showing an outline of the functions of the projector 110. As shown in FIG. The projector 110 includes a CPU 112, a control panel 116, a remote control communication unit 118, an edit data storage unit 120, an interface 122, a communication unit 124, a lamp control circuit 126, a lamp 128, an image processing circuit 130, A light modulation element drive circuit 132, an illumination optical system 134, a light modulation element 136, and an imaging optical system 138 are included.

<< CPU 112 (control means) >>
The projector 110 includes a CPU (Central Processing Unit) 112 that performs calculations and the like. The CPU 112 is electrically connected by an input / output bus 114 so that data signals and address signals can be input / output. Further, the CPU 112 executes a control program shown in FIGS. These control programs are stored in advance in a ROM (not shown), and variable values and various data used by the control program are stored in a RAM (not shown). The ROM and RAM are also electrically connected by the input / output bus 114.

<< Control Panel 116 >>
The control panel 116 is a panel for an operator to operate the projector 110. For example, the control panel 116 includes a display unit, an operation unit, and the like for controlling on / off of the power supply of the projector 110 and determining communication conditions. The control panel 116 is electrically connected to the input / output bus 114, and a control signal generated from the control panel 116 is supplied to the CPU 112 for controlling the projector 110.

  The content described above is a presentation of data created by various application software, for example, data created by document creation software, data created by spreadsheet software, data created by image creation software or presentation software, etc. Any data that can be presented is acceptable. The ROM and RAM described above are stored in advance so that application software such as a viewer for displaying the data of these contents as a projected image can also be executed.

<< Remote control communication unit 118 and remote control device (designating means) >>
The projector system according to the present embodiment changes a content object projected as a projection image on a projection surface, and therefore a remote control device (not shown) that can specify an object, an element, and a parameter by an operation of an operator. including. The remote control communication unit 118 receives data transmitted from the remote control device, that is, a remote control signal representing data such as a specified object, element, parameter, etc., when an object of content to be changed is specified. Communication between the remote control device and the remote control communication unit 118 is preferably performed using a known communication method such as infrared communication.

  The remote control communication unit 118 is electrically connected to the input / output bus 114, and control data such as an object supplied via the remote control communication unit 118 is stored in a RAM (not shown), and changes the content object. It is used when generating change information.

  The designation of an object or the like is not limited to designation using a remote control device via the remote control communication unit 118, but can be modified so that it can be designated by an operation unit or the like provided on the control panel 116. Further, it can be modified so that an object or the like can be designated by a personal computer that can communicate with the projector via the interface 122.

<< Edit Data Storage Unit 120 >>
The edit data storage unit 120 stores change information that gives a predetermined change to the object of the content projected from the projector, and image data that serves as a reference before the change is given to the object.

  Here, “change information” is information for giving a predetermined change to an object so that the content of the object included in the projected image of the content projected from each projector is different. , Information including information including “object”, “element (attribute)”, and “specific level of parameter for giving a predetermined change”. For example, when the color of a graphic object is changed to a red system, the change information is information having a graphic object as an object, color information as an element, red system as a parameter, and orange as an element as a specific level of the parameter. It is. When the font size of a character object is greatly changed by 2 points for a specified 10-point character object, the character object is set as an object, the font size information is set as an element, the size is increased by 2 points as a parameter, and This is information having 12 points as an element as a specific level of the parameter. Note that the change information may be the image data itself of the content after changing the object.

  The “image data” is content data that serves as a reference before giving a predetermined change to a content object that is a projection image projected from each projector. Each projector has an editing function and a viewer function. The editing function uses the change information to perform an edit that gives a predetermined change to the content object based on the image data, and the viewer function gives a predetermined change. The content including the object is projected onto the projection plane as a projection image.

<< Interface 122 >>
The interface 122 is for electrically connecting a control device external to the projector 110, a storage medium, and the like to the projector 110. Content data is supplied to the projector 110 via the interface 122. For example, the interface 122 includes a USB (Universal Serial Bus) interface and an IEEE (The Institute of Electrical and Electronic Engineers) interface. When the projector system 100 includes a plurality of projectors 110, it is not necessary to connect an external control device, a storage medium, or the like to each of the plurality of projectors 110, and any one projector 110 among the plurality of projectors 110. In addition, an external control device, a storage medium, or the like may be connected.

  The interface 122 is electrically connected to the input / output bus 114, and content data supplied via the interface 122 is supplied to a communication unit 124 and an image processing circuit 130 described later. Note that communication between the projectors 110 can be performed via the interface 122.

<< Communication Unit 124 >>
The communication unit 124 is for performing communication between its own projector and another projector. As will be described later, content data and various control commands, as well as change information for giving a predetermined change to the object so that the content of the object is different, are transmitted and received via the communication unit 124. By the communication unit 124, a plurality of projectors 110 are connected to be communicable to constitute a projector system 100. Further, the communication unit 124 may be used for communication with a control device outside the projector 110 or communication with other storage media.

<< Lamp Control Circuit 126 >>
The lamp control circuit 126 controls a lamp 128 described later. The lamp control circuit 126 is also electrically connected to the input / output bus 114. A lamp 128 is electrically connected to the lamp control circuit 126. When the control signal generated from the CPU 112 is supplied to the lamp control circuit 126, the lamp control circuit 126 controls lighting, extinguishing, light emission intensity, and the like of the lamp 128 according to the supplied control signal.

<< Lamp 128 (Light Source) >>
The lamp 128 is a lamp that emits light of a predetermined intensity at a predetermined wavelength, for example, a halogen lamp. The lamp 128 is disposed at a predetermined position inside the projector 110 so that the emitted light is emitted toward the outside of the projector 110.

<< Image Processing Circuit 130, Light Modulation Element Drive Circuit 132 >>
The image processing circuit 130 includes a display memory (not shown). In the display memory, data of various contents supplied through the interface 122 described above is converted into display data and stored in accordance with a control signal issued from the CPU 112.

  The image processing circuit 130 is also electrically connected to the input / output bus 114. The display memory and the light modulation element drive circuit 132 are electrically connected to the image processing circuit 130. The image processing circuit 130 outputs a control signal for controlling the light modulation element drive circuit 132 based on the data stored in the display memory in accordance with the control signal issued from the CPU 112 described above. Issue to circuit 132.

  The light modulation element drive circuit 132 issues a drive signal for driving the light modulation element 136 to the light modulation element 136 in accordance with the control signal emitted from the image processing circuit 130. The light modulation element 136 performs an operation of passing or blocking the light reaching the light modulation element 136 in accordance with the drive signal supplied from the light modulation element drive circuit 132. In this way, various contents can be projected as a projected image.

<< Illumination Optical System 134 >>
As shown in FIG. 2, the light emitted from the lamp 128 controlled by the lamp control circuit 126 is guided to the illumination optical system 134. The illumination optical system 134 includes, for example, a reflecting mirror (not shown), a filter (not shown), a lens (not shown), and the like. These reflecting mirrors, filters, and lenses are provided at predetermined positions inside the projector 110.

  The illumination optical system 134 guides the light emitted from the lamp 128 to parallel light and makes the light intensity uniform and guides it to a light modulation element 136 described later. Note that the shape and number of lenses included in the illumination optical system 134 are not particularly limited as long as they can convert light emitted from the lamp 128 into light that is preferable for entering the light modulation element 136. .

<Reflector>
A reflecting mirror is provided around the lamp 128. The reflecting surface of the reflecting mirror has a predetermined curved surface shape, for example, a parabolic shape or an elliptical shape. The reflecting mirror is arranged so that the position of the focal point of the reflecting surface of the reflecting mirror approximately matches the position of the filament of the lamp 128. The reflecting mirror reflects the light emitted from the lamp 128 by the reflecting surface, collects the light, and guides the light toward the light modulation element 136 described later.

<Filter>
A filter is disposed in the traveling direction of the light reflected by the reflecting mirror. The filter previously blocks light having a wavelength that may damage the light modulation element 136 or light having a wavelength that may affect the human body, among the light emitted from the lamp 128.

<< Light Modulation Element 136 >>
The light guided to the illumination optical system 134 is converted as desired and guided to the light modulation element 136 controlled by the light modulation element drive circuit 132.

  In the traveling direction of the light that has passed through the illumination optical system 134, a light modulation element 136, for example, a liquid crystal element is disposed. The light modulation element 136 is controlled by the drive signal generated from the light modulation element drive circuit 132 as described above. The light modulation element 136 operates to pass or block the light reaching the light modulation element 136 according to the drive signal.

  The light that has passed through the light modulation element 136 by the operation of the light modulation element 136 is formed on a projection surface (not shown) such as the screen 140 as a desired projection image.

  The light modulation element 136 is not limited to the liquid crystal element described above, but may be any element that can control the progress of light emitted from the lamp 128, such as a DMD (digital micromirror device).

<Other optical elements>
Further, an optical element such as a rod for irradiating the light modulation element 136 with the intensity of the light emitted from the lamp 128 being made more uniform may be further added to the illumination optical system 134.

<< imaging optical system 138 >>
The light guided to the light modulation element 136 is modulated and guided to the imaging optical system 138. In FIG. 2, the light emitted from the lamp 128 to the imaging optical system 138 and emitted from the projector 110 is indicated by a broken line.

<Projection lens>
A projection lens (not shown) is provided in the traveling direction of the light that has passed through the light modulation element 136 described above. As described above, the projection lens converts the light that has passed through the light modulation element 136 so as to spread in a predetermined direction. With this projection lens, it is possible to project the projection image in a desired size.

  What is necessary is just to convert into the light preferable for making it project on projection surfaces, such as the screen 140, What is necessary is just to determine suitably the shape and number of projection lenses.

<Zoom function>
Further, the imaging optical system 138 may be provided with a movable lens group to have a zoom function. In this way, the projected image can be enlarged or reduced to a desired size. The zoom function may be optically enlarged or reduced like the movable lens group, or may be performed by the arithmetic processing of the CPU 112 or the image processing circuit 130 described above.

<Correction of projected image>
Further, the light that has passed through the light modulation element 136 may be projected obliquely on the projection surface, and the projected image may be distorted. The mechanism or method for correcting such distortion is performed by the arithmetic processing of the CPU 112 or the image processing circuit 130 described above, even if an optical element for correction is provided in the imaging optical system 138 and optically performed. Also good.

<<< Configuration and Control Processing of Projector System 100 >>>
<< Projectors PJ1 to PJ4 >>
FIG. 3 shows a schematic diagram of a configuration of the projector system 100 according to the first embodiment. The projector system 100 is a system in which four projectors are communicably connected, and a control device PC such as a personal computer is communicably connected to one of the projectors. Hereinafter, the projector PJ1 to which the control device PC is connected is referred to as a reference projector, and the other projectors are referred to as PJ2, PJ3, and PJ4. Therefore, the projector system according to the first embodiment forms a star-shaped network in which each of the projectors PJ2 to PJ4 can communicate with the reference projector PJ1 with the reference projector PJ1 as the center.

<Reference projector PJ1>
In the projector system 100 according to the first embodiment, the reference projector PJ1 controls the object so that the content of the object included in the projection image projected from each projector differs between the projection images of the plurality of projectors. I do. Therefore, in the reference projector PJ1, image data of content created by the control device PC or the like is stored in the edit data storage unit 120.

  In order to give a change to the object, the reference projector PJ1 generates change information that gives a predetermined change to the object for each projector, and the generated change information and the reference image data before the predetermined change is given, The reference projector PJ1 transmits to the other projectors (PJ2, PJ3, PJ4). In reference projector PJ1, content based on image data is projected as a projected image onto a projection plane by a viewer function provided in the projector.

<Projectors PJ2 to PJ4>
When each of the projectors PJ2 to PJ4 receives the change information and the image data, each of the projectors PJ2 to PJ4 uses the change information to perform editing that gives a predetermined change to the content object based on the image data. After editing, the edited content is projected onto the projection plane as a projected image by the viewer function provided in the projector. As a result, the content of the object included in the projection image projected from each projector is controlled to be different.

  Specifically, before and after the change is applied to the object, the content of the content based on the image data stored in the editing data storage unit 120 of the reference projector PJ1 (including the object that has not been changed) is received from the reference projector PJ1. A projected image is projected. On the other hand, from the projectors PJ2 to PJ4, the projection image of the content in which a predetermined change is given to the content object based on the image data is projected using the change information.

  In the projector system according to the first embodiment, since the change information is transmitted from the reference projector PJ1 to the other projectors PJ2 to PJ4, it is possible to control to give a predetermined change by the reference projector PJ1. Further, since the change information is determined based on the number of projectors constituting the network in the star-shaped network, the change information reflecting the total number of projectors can be determined. Therefore, variations of projection images including objects to which a predetermined change has been given are widened, enabling more efficient comparison and effective material creation.

<< Control processing >>
A control process of the projector system 100 according to the first embodiment will be described with reference to FIGS. 4 and 5 are flowcharts for executing control processing of the projector system 100 according to the first embodiment. In FIG. 4 and FIG. 5, since the processes in the projectors PJ2 to PJ4 other than the reference projector PJ1 are the same, the processes related to the projector PJ3 are omitted for the sake of simplicity. FIGS. 6 to 10 are state diagrams showing projection images from the projectors in order to explain the control process for changing the graphic object.

  The “content” in the present embodiment is obtained by converting data so that it is displayed as a projected image so as to be visible by application software. Specifically, the application is not limited to data created by image creation software or presentation software, and various data that can be presented as presentations such as data created by document creation software, data created by spreadsheet software, etc. Those converted to be displayed as a projected image so as to be visible by software are also included.

<Reference image projection processing>
First, the reference projector PJ1 executes reference image projection processing for projecting the content of image data (referred to as “reference image data”) stored in the editing data storage unit 120 onto the screen as a projection image (step S11). FIG. 6 shows a state diagram in which the reference image projection process is executed. FIG. 6 shows a character object “Aiueo”, a graphic object “circle” painted in red, a “triangle” painted blue, a “square” painted green, and other colorless objects. The state figure in which the projection image of the content which consists of a background object is projected from the reference | standard projector PJ1 is shown. 6 to 10, red is represented by a parallel diagonal line pattern that rises to the right, blue is represented by a dot pattern, and green is represented by a parallel diagonal line pattern that descends to the right.

  Further, the projected images of the projectors PJ2, PJ3, and PJ4 are shown in the right direction in order from the projected image of the reference projector PJ1, but in the reference image projection process (step S11), no image is projected from projectors other than the reference projector PJ1. Is shown.

  When a menu switch provided on the control panel 116 of the remote control device or reference projector PJ1 (not shown) is operated, the content imitating the menu bar is projected as a projected image as a projected image, and a change designation that changes the object of the projected image Is ready for input, which can be performed by a remote control device or the like.

  Then, it is determined whether or not a change designation for changing the object has been performed (step S12). In step S12, when it is determined that the change designation is not performed by the reference projector PJ1 (NO), the process of step S12 is repeated. On the other hand, when it is determined in step S12 that the change designation has been made (YES), the reference image data of the content that is the projection image of the reference projector PJ1 is transmitted from the reference projector PJ1 to the other projectors PJ2 to PJ4. Image data transmission processing is executed (step S13). Specifically, the reference image data transmission process (step S13) is executed by the operator selecting an “image adjustment” item from the menu bar of the projection image of the reference projector PJ1, and the reference projector PJ1 to another projector. The reference image data stored in the edit data storage unit 120 is transmitted.

  The projectors PJ2 to PJ4 other than the reference projector PJ1 that has received the image data by the reference image data reception process (steps S31 and S41) execute the reference image projection process of projecting the content of the image data as a projection image on the screen of each projector. (Steps S32 and S42). FIG. 7 shows a state diagram in which the reference image projection process is executed. As shown in FIG. 7, as a result of executing the reference image projection processing (steps S31 and S41), the same projection image (reference image) is projected from each of the projects PJ1 to PJ4.

<Object selection process (object reception process)>
The reference projector PJ1 in which the reference image data transmission process (step S13) has been executed is in an input ready state in which an object reception process in which an object to be changed is selected by a remote control device or the like can be executed (step S14). Specifically, information on the content object is acquired from the reference image data, and the acquired object is, for example, down-dropped in the “object selection” associated with the “image adjustment” item on the menu bar projected on the screen. The object reception process is executed by indicating the method. FIG. 8 shows a state diagram in which the object reception process is executed.

  As shown in FIG. 7, the “object selection” item on the menu bar includes object names acquired from the reference image data, ie, “figure 1”, “figure 2”, “figure 3”, “character 1”, and The object name “background” is displayed by the down-drop method. Therefore, the operator can select an object to be changed by using a remote control device or the like.

  Since the object name displayed in the “object selection” item on the menu bar is automatically obtained from the reference image data, the reference image data stored in the edit data storage unit 120 of the reference projector PJ1 is edited. Thus, an object can be added / deleted / modified and reflected in the contents of the “object selection” item in the menu bar.

  Then, it is determined whether or not an object has been designated (step S15). If it is determined in step S15 that no object is designated by the reference projector PJ1 (NO), the process of step S15 is repeated. On the other hand, when it is determined in step S15 that an object has been designated (YES), an object determination process for determining an object to be changed is executed (step S16). FIG. 8 described above is a state diagram in which the graphic determination object is designated by executing the object determination process. In order to clearly indicate to the operator that the graphic 1 object in the projection image of the reference projector PJ1, that is, “circle” has been designated, the outline of the graphic 1 object is indicated by a broken line. Note that the designated object is not limited to be indicated by a broken line, but it is also preferable to make the designated object clear by blinking or the like.

<Object selection process (element reception process)>
The reference projector PJ1 in which the object determination process (step S16) has been executed is in an input ready state in which an element reception process in which an element element to be changed is selected by a remote control device or the like can be executed (step S17). Specifically, the element information associated with the content object is acquired from the reference image data, and acquired in the “element selection” associated with each object such as “Figure 1” on the menu bar projected on the screen. For example, the element reception process is executed by indicating the performed element by a down-drop method.

  Then, it is determined whether or not an element has been designated (step S18). If it is determined in step S18 that no element is designated by the reference projector PJ1 (NO), the process of step S18 is repeated. On the other hand, if it is determined in step S18 that an element has been designated (YES), element determination processing for determining an element is executed (step S19).

<Object selection process (parameter reception process)>
The reference projector PJ1 in which the element determination process (step S19) has been executed is in an input enabled state in which the parameter reception process in which the parameter of the object element to be changed is selected by the remote control device or the like can be executed (step S20). Then, it is determined whether or not a parameter has been designated (step S21). If it is determined in step S21 that the parameter is not designated by the reference projector PJ1 (NO), the process of step S21 is repeated. On the other hand, when it is determined in step S21 that the parameter has been designated (YES), parameter determination processing for determining the parameter is executed (step S22).

  Therefore, since the change given to the element of the object, that is, the object to which the predetermined change is given is designated, and the element and the parameter are designated, the object is set so that the contents of the object are different among the projection images of a plurality of projectors. It is possible to control to give a predetermined change to the elements.

  FIG. 9 shows a state diagram in which the “figure 1” object (“circle” object) is selected and determined by the object determination process, the “color” element is selected by the element determination process, and the “red line” is selected and determined by the parameter determination process. As shown in FIG. 9, for example, an element that is an attribute of an object is selected from a group of items of object color, size (size), aspect ratio, and rotation for a graphic 1 object (“circle” object). It is what is done. For example, the parameter for changing the element of the object changes the color regardless of the red system, the blue system, the green system, and the color system for the color element of the graphic 1 object ("circle" object). It is selected from a group of random items.

  As with the object name, the element name and the parameter name are also automatically acquired from the reference image data. Therefore, it is added by editing the reference image data stored in the edit data storage unit 120 of the reference projector PJ1.・ Can be deleted / modified and reflected in the contents of each item on the menu bar.

  Furthermore, since an object, an element, and a parameter are designated, the editing work elements are organized into these three elements, and the editing work can be simplified.

<Change information determination / storage process>
When the object, element, and parameter to be changed are determined in steps S14 to S22, the reference projector PJ1 generates change information in order to change the content object projected from the projectors PJ2 to PJ4. A change information determination / storage process for storing the change information in the edit data storage unit 120 of the reference projector PJ1 is executed (step S23). The change information generated for each projector changes the object, but is generated so that the contents of the changed object are different among the projection images of all projectors including the reference projector PJ1.

Here, the change information is information generated based on the determined object, element, and parameter, and is a specific parameter for giving a predetermined change for each projection image of the projector. Information including level and information.
<Image projection processing based on change information>
The change information generated for each projector by the change information determination / storage process (step S23) is transmitted from the reference projector PJ1 to each other projector by the change information transmission process (step S24) of the reference projector PJ1 (step S24). ). The transmitted change information is received by the change information receiving process of projectors PJ2 to PJ4 (steps S33 and S43). Projectors PJ2 to PJ4 other than reference projector PJ1 execute image data generation processing based on change information for editing image data based on reference image data stored in its own edit data storage unit and received change information. (Steps S34 and S44). Then, after executing the image data generation process, the generated image projection process for projecting the edited image data content onto the screen as a projection image is executed by the viewer function of the projector (steps S35 and S45).

  The state diagram of FIG. 9 shows a projection image from each projector in which the color element of the graphic 1 object (“circle” object) is changed by the parameter “red system”. Specifically, the color of the figure 1 object is changed from the projectors PJ1 to PJ4 in order of “red”, “light orange”, “beige”, and “orange” (in FIG. 9, due to the density of parallel diagonal lines). , Showed a color change). Accordingly, “light orange”, “beige”, and “orange” are transmitted to the projectors PJ2, PJ3, and PJ4 as the parameter levels included in the change information.

  In this way, since the content of the object that has given a predetermined change is controlled to be different between the projection images of the projectors PJ1 to PJ4, the projection of content including the object that has been changed simultaneously by the plurality of projectors PJ1 to PJ4. An image can be projected. Therefore, it is necessary to repeat the same operation until a desired projection image is selected. Unlike the case of a single projector that compares the changed image with the user's memory, the projector system according to this embodiment Makes it possible to grasp changes in objects at once by simply comparing the projected images from each projector in which the objects are changing without actually relying on memory, and without having to repeat the same work. This eliminates the need for the user to memorize the impression of the image before the change, thereby simplifying the work. In other words, since the images with the changed object parameters can be projected side by side, and the parameters that make the best image can be selected while actually comparing them, it is possible to efficiently create effective data. A method of selecting an image created with parameters that will be the best image will be described later.

  Furthermore, since the projection images corresponding to the projectors can be compared, it is possible to efficiently compare the projection images of the content including the object having given a predetermined change with a small number of projectors. Therefore, it is possible to create effective materials.

<Image selection process>
When the image projection process based on the change information is executed, the reference projector PJ1 can execute an image selection designation process in which any one of the projected images projected from the projectors PJ1 to PJ4 is selected by the remote control device or the like. It is determined whether input is possible and image selection is designated (step S25). If it is determined in step S25 that no image selection is designated by the reference projector PJ1 (NO), the process of step S25 is repeated. On the other hand, when it is determined in step S25 that image selection is designated (YES), selected image data is generated from the change information corresponding to the selected image and the reference image data, and the edited data storage unit 120 stores the selected image data. After executing the selection image data generation process to be stored (step S26), the selection image projection process for projecting the content of the selection image data as a projection image on the screen as the projection image of the reference projector PJ1 is executed (step S27).

  Then, the reference projector PJ1 executes an end signal transmission process for transmitting an end signal for ending projection of the projection image to the projectors PJ2 to PJ4 (step S28). Projectors PJ2 to PJ4 receive the end signal transmitted from reference projector PJ1 by executing the end signal receiving process (steps S36 and S46). Receiving the end signal, the projectors PJ2 to PJ4 execute a projection image erasing process for ending the projection of the projection image projected by the generated image projection process (steps S35 and S45) (steps S37 and 47).

  FIG. 10 shows a state diagram in which the image 4 of the projector PJ4 is selected and the image selection process is executed in the state diagram of FIG. As the projected image of the reference projector PJ1, an image in which the color element of the graphic 1 object (“circle” object) is determined to be “orange” is projected, and the projected images of the contents based on the image data of the projectors PJ2 to PJ4 are erased from the screen. Has been.

  Thus, the control process for controlling the content of the object of the projection image to be different between the projection images of the projector using the reference projector PJ1 and the other projectors PJ2 to PJ4 is completed.

  If it is desired to change the object again, it can be realized by repeating the above-described control process, and the operator can select a desired image.

<Other object changes>
(Select multiple objects)
In this embodiment, when the element of an object and a parameter are common, a change can be simultaneously given to a plurality of objects by the control process described above. FIG. 11 shows a state diagram in which a control process for changing a plurality of objects is executed. FIG. 11A is a state diagram in which a graphic 1 object (“circle” object) and a graphic 2 object (“rectangle” object) are selected. FIG. 11B is a state diagram in which “size” is selected as an element and “reduction by 15 mm” is selected as a parameter, and both objects are changed. FIG. 11C is a state diagram in which the image 2 projected from the projector PJ2 is selected.

(Selection of character object 1)
In the present embodiment, a change can be given to a character object. FIG. 12 shows a state diagram in which a control process for changing a character object is executed. FIG. 12A is a state diagram in which a character 1 object (a character string “Aiueo” object) is selected. FIG. 12B is a state diagram in which “font size” is selected as an element and “enlargement by 2 points” is selected as a parameter, and a character 1 object is changed. FIG. 12C is a state diagram in which the image 1 projected from the projector PJ1 is selected.

(Selection of character object 2)
Furthermore, a change can be given to the character object at random. FIG. 13 shows a state diagram in which control processing for randomly changing a character object is executed. FIG. 13A is a state diagram in which a character 1 object is selected. FIG. 13B is a state diagram in which “character” is selected as the element, “random” is selected as the parameter, and changes are randomly given to the character 1 object. FIG. 13C is a state diagram in which the image 3 projected from the projector PJ3 is selected.

(Select background object)
Further, a change can be given to the background object. FIG. 14 shows a state diagram in which the control process for changing the background object is executed. FIG. 14A is a state diagram in which a background object is selected. FIG. 14B is a state diagram in which “color” is selected as the element, “random” is selected as the parameter, and changes are randomly given to the background object. FIG. 14C is a state diagram in which the image 2 projected from the projector PJ2 is selected.

<<<<< Second Embodiment >>>>
A projector system 200 according to the second embodiment will be described with reference to FIGS. In the projector system 200 according to the second embodiment, a plurality of projectors 110 that project content onto a projection surface as projection images are connected so as to be communicable. As shown in FIG. 15, reference projectors PJ1 to PJ2, PJ3, and In order of PJ4, a communicable serial network is configured in which the communication order is preset from the upstream projector to the downstream projector.

  Each projector changes the object so that the content of the object included in the projection image projected from each projector from the upstream projector to the downstream projector is different between the projection images of the projector. Therefore, it is possible to control to give a predetermined change to the object regardless of the number of projectors.

  Specifically, first, the projector PJ1 generates change information that gives a predetermined change to the content object of the projector PJ2, and the generated change information and image data that serves as a reference before the predetermined change is given, The change history information in which the specific level of the parameter of the object of the projector PJ1 to which the predetermined change is given is transmitted from the reference projector PJ1 to the projector PJ2. In reference projector PJ1, content based on image data is projected as a projected image onto a projection plane by a viewer function provided in the projector.

  Next, the projector PJ2 that has received the change information and the image data uses the change information to perform an edit that gives a predetermined change to the content object based on the image data. The content is projected onto the projection surface as a projection image, and the contents of the objects included in the projection images projected from the projectors PJ1 and PJ2 are controlled to be different. Further, the projector PJ2 changes change history information that is a specific level of the parameter of the object included in the content of the projector PJ1 upstream of itself and the projector PJ2 and a change that gives a predetermined change to the object of the content of the projector PJ3. Information is generated, and the generated change information, change history information, and image data are transmitted to the projector PJ3.

  Further, the projector PJ3 that has received the change information, the change history information, and the image data performs editing to give a predetermined change to the content object based on the image data using the change information and the change history information. By the viewer function provided in the projector, the edited content is projected on the projection plane as a projection image, and the contents of the objects included in the projection images projected from the projectors PJ1 to PJ3 are controlled to be different. Further, the projector PJ3 changes the change history information, which is a specific level of the parameters of the object included in the contents of the projectors PJ1 and PJ2 upstream of the projector PJ3 and the projector PJ3, and the object of the contents of the projector PJ4. Change information that gives the change information, change history information and change history information, and image data are transmitted to the projector PJ4.

  Then, the projector PJ4 that has received the change information, the change history information, and the image data also performs editing to give a predetermined change to the content object based on the image data using the change information and the change history information. The edited content is projected onto the projection plane as a projection image, and the contents of the objects included in the projection images projected from the projectors PJ1 to PJ4 are controlled to be different.

<<< Configuration of Projector 210 >>>
A projector system 200 according to the second embodiment includes a projector 210 that includes a change history storage unit 121 in the projector 110 instead of the projector 110 of the projector system according to the first embodiment. FIG. 16 is a block diagram showing an outline of functions of the projector 210 of the projector system 200 according to the second embodiment. Hereinafter, the change history storage unit 121 in which the projector 210 is different from the projector 110 will be described.

<< Change History Storage Unit 121 >>
In the projector system 200 according to the second embodiment, a communicable serial network is configured in which the communication order is preset from the upstream projector to the downstream projector in the order of the reference projectors PJ1, PJ2, PJ3, and PJ4. . Each projector changes the object so that the content of the object included in the projection image projected from each projector from the upstream projector to the downstream projector is different between the projection images of the projector.

  Therefore, in each projector, by storing the change history information of the image data generated in all the projectors upstream from the projector, the content of the object of the projected image projected from the projector and the projector upstream from the projector is stored in a plurality of projectors. The object is changed so as not to overlap between the projected images. Therefore, the change history information is stored in the change history storage unit 121.

  Here, the change history information is information including specific levels of the parameters of the objects of the projection images of all projectors upstream of the projector itself and the projectors upstream of the projector. For example, since no change is given to the object in the projector PJ1, the specific level of the parameter of the projection image of the projector PJ1 is set as the change history. On the other hand, in projector PJ2, the specific level of the parameter of the projection image of projector PJ1 and the specific level of the parameter of the projection image of projector PJ2 included in the change history information from projector PJ1 are set as the change history information. Similarly, in projector PJ3, the specific levels of the parameters of the projection images of projectors PJ1 to PJ3 are set as change history information, and in projector PJ4, the specific levels of the parameters of the projection images of projectors PJ1 to PJ4 are set as change history information. Is set.

<< Control processing >>
A control process of the projector system 200 according to the second embodiment will be described with reference to FIGS. 17 and 18 are flowcharts for executing control processing executed in the projector system 200 according to the second embodiment. In FIG. 17 and FIG. 18, since the processes of the projectors PJ2 and PJ3 overlap, the processes related to the projector PJ3 are omitted for the sake of simplicity.

<Reference image projection processing>
First, the projector PJ1 projects the content of image data (referred to as “reference image data”) stored in the editing data storage unit 120 onto the screen as a projection image (step S111), and the remote control device (not shown) It is in an input enabled state in which a change designation that changes the object can be performed.

  Then, after determining whether or not the change designation for changing the object has been performed (step S112), if it is determined that the change designation has been performed (YES), the reference image of the content that is the projection image of the projector PJ1 Data is transmitted from the projector PJ1 to the projector PJ2 that can communicate with the projector PJ1. The projector PJ2 that has received the reference image data by the reference image data reception process (step S131) projects the content of the image data on the screen as a projection image (step S132), and transmits the reference image data to the projector PJ3.

  Similarly, the projector PJ3 projects the content of the reference image data as a projected image and transmits the reference image data to the projector PJ4. The projector PJ4 also projects the content of the reference image data as a projection image (step S142). As a result of executing the reference image projection processing (steps S132 and S142), the same projection image (reference image) is projected from each of the projects PJ1 to PJ4.

<Object selection process>
Also in the second embodiment, the object selection process (steps S114 to S122) is executed. In the object selection process of the second embodiment, the same process as the object selection process (steps S14 to S22) of the first embodiment is executed.

<Change information determination / storage processing of projector PJ1>
When the object, element, and parameter to be changed are determined in steps S114 to S122, the projector PJ1 changes the object of the content projected from the projector PJ2, and therefore the specific level of the parameter of the projection image of the projector PJ1. Change history information is generated, the generated change history information is generated in the change history storage unit 121, the change information is further generated, and the generated change information is stored in the edit data storage unit 120 of the projector PJ1 (step S123). . The change information generated for each projector changes the object, but is generated so that the contents of the changed object differ between the projected images of the projector PJ1 and the projector PJ2.

  Note that the change information of the second embodiment is also information generated based on the determined object, element, and parameter, like the change information of the first embodiment, and for each projection image of the projector, This is information including information consisting of elements and specific levels of parameters for giving a predetermined change.

<Image Projection Processing of Projectors PJ2 and PJ3>
The change information and the change history information generated by the change information determination / storage process (step S123) of the projector PJ1 are transmitted from the projector PJ1 to the projector 2 by the change information transmission process of the projector PJ1 (step S124). Then, the transmitted change information and change history information are received by the change information receiving process of the projector PJ2 (step S133). The projector PJ2 executes image data generation processing for editing image data based on the reference image data stored in its editing data storage unit and the received change information and change history information (step S134).

  Then, after executing the image data generation processing, change information that changes the object is generated from the received change information and change history information, stored in the editing data storage unit 120 of the projector PJ2, and further received change The change history information stored in the change history storage unit 121 of the projector PJ2 is generated by adding a specific level of the parameter of the object to the history information from the image data generated by the projector PJ2 as the history information. Generation / storage processing (step S135) is executed. Thereafter, a generated image projection process for projecting the content of the edited image data onto the screen as a projection image of the projector PJ2 is executed by a viewer function provided in the projector (step S136).

  After executing the generated image projection process (step S136), the change information and change history information generated by the change information / change history information generation / storage process (step S135) of the projector PJ2 are the change information / change history of the projector PJ2. The information is transmitted from the projector PJ2 to the projector 3 by the information transmission process (step S137).

  The change information and the change history information transmitted from the projector PJ2 to the projector PJ3 are received by the change information receiving process of the projector PJ3, and the reference image data stored in the editing data storage unit of the projector PJ2 is received as in the projector PJ2. Based on the change information and the change history information, an image data generation process for editing image data is executed. Then, change information and change history information for changing the object are generated from the received change information and change history information, and stored in the edit data storage unit 120 and the change history storage unit 121 of the projector PJ3. Thereafter, the content of the edited image data is projected on the screen as a projection image of the projector PJ3 by a viewer function provided in the projector. Finally, the projector PJ3 transmits the change information and the change history information generated by the projector PJ3 to the projector 4.

<Image Projection Processing of Projector PJ4>
The change information and the change history information transmitted from the projector PJ3 to the projector PJ4 are received by the change information receiving process of the projector PJ4 (step S143). The projector PJ4 executes image data generation processing for editing image data based on the reference image data stored in its editing data storage unit and the received change information and change history information (step S144). Thereafter, a generated image projection process for projecting the edited image data content onto the screen as a projection image of the projector PJ4 is executed by a viewer function provided in the projector (step S145).

<Image selection process>
Also in the second embodiment, the image selection process (steps S125 to S128, S138 to S139, S146 to S147) is executed. In the first embodiment, an end signal is transmitted from the projector PJ1 to each of the projectors PJ2 to PJ4. In the second embodiment, the projector PJ1 is transferred to the projector PJ2, and then the projector PJ2 is transferred to the projector PJ3. Thereafter, the projection processing of the projection images transmitted from the projector PJ3 to the projector PJ4 according to the priority order and generated by the projectors PJ2 to PJ4 is ended.

FIG. 3 is a diagram for explaining an external appearance of a projector 110. FIG. 2 is a block diagram illustrating an outline of functions of a projector. 1 is a schematic diagram showing a configuration of a projector system 100 according to a first embodiment. It is a flowchart for performing the control process performed in the projector system 100 which concerns on 1st Embodiment. It is a flowchart for performing the control process performed in the projector system 100 which concerns on 1st Embodiment. It is a figure explaining the control processing which gives a change to a figure object, and is a state figure before change directions. It is a figure explaining the control processing which gives a change to a figure object, and is a state figure after change directions. It is a figure explaining the control processing which gives a change to a figure object, and is a state figure at the time of object selection. It is a figure explaining the control process which gives a change to a graphical object, Comprising: It is the state figure which changed the object. It is a figure explaining the control processing which gives a change to a figure object, and is a state figure which selected an image. It is a figure explaining the control processing which gives a change to another figure object. It is a figure explaining the control processing which gives a change to a character object. It is a figure explaining the control processing which gives a change to another character object. It is a figure explaining the control processing which gives a change to a background object. It is the schematic which shows the structure of the projector system 200 which concerns on 2nd Embodiment. It is a block diagram which shows the outline of the function of the projector 210 which concerns on 2nd Embodiment. It is a flowchart for performing the control process performed in the projector system 200 which concerns on 2nd Embodiment. It is a flowchart for performing the control process performed in the projector system 200 which concerns on 2nd Embodiment.

Explanation of symbols

100, 200 Projector system 110, 210 Projector 112 CPU (control means)
116 Control panel 118 Remote control communication unit 120 Edit data storage unit 121 Change history storage unit

Claims (6)

A projector system having a plurality of communicable projectors that project content configured by an object onto a projection surface as a projection image,
Control means for giving a predetermined change to the object for each projection image projected from each of the plurality of projectors,
The control means controls the content of the object having given the predetermined change to be different among the projection images of the plurality of projectors.
Projector system. The object;
An element indicating an attribute of the object;
A parameter for giving the predetermined change to the element of the object;
Further includes a designation means for designating
The projector system according to claim 1. The plurality of projectors includes one projector and at least one other projector capable of communicating with the one projector,
The control means includes
Determining change information indicating the predetermined change based on the object, element, and parameter specified by the specifying means;
Transmitting the change information from the one projector to the other projector;
The projector system according to claim 2, wherein: The control means determines the change information based on the number of the plurality of projectors;
The projector system according to claim 3. The plurality of projectors has a communication order determined from an upstream projector to a downstream projector,
Each of the plurality of projectors includes the control means,
The control means includes change information indicating the predetermined change based on the object, the element, and the parameter specified by the specifying means, the content of the object that has given the predetermined change between itself and a projector upstream of itself. Determine differently between the projected images of
The projector system according to claim 2, wherein: The element is an element selected from a group of object color information, size information, font information, rotation information, position information, aspect ratio information, and other object changeable information.
The projector system according to any one of claims 2 to 5, wherein:

Images