JP2009175397A - Image display system, image display method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display system, an image display method and a program, wherein convenience in setting a part of an image to a non-display state is improved. <P>SOLUTION: When a display button of a tool bar displayed on a liquid crystal display 16 is clicked, a CPU 11 in a computer 1 reads out mask information from a RAM 14 and outputs the read mask information from a USB terminal 13a to an external image display device 2. Then, the CPU 11 instructs a video controller 15 to start the output of image information from an image output terminal 15a to the external image display device 2. When the mask information is input to the image display apparatus 2, a mask processing part in the image display device 2 applies mask processing based on the mask information to the image information of which the output is started, and the same image as the image displayed on the liquid crystal display 16 is displayed on the image display device 2 in a state where a mask area is masked. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an image display system, an image display method, and a program that include a first image display device, a second image display device, and an information processing device that outputs image information to these.

  An information processing apparatus connected to (or integrally provided with) an image display apparatus (first image display apparatus) is connected to an external image display apparatus (second display) that can display a large screen like a projector. When an image display device is further connected and an image output from the information processing device is shown to many audiences, it may be desired to hide only a part of the image for the second image display device. For example, when displaying a manuscript including a question sentence and its answer, if the answer can be hidden only on the second image display device, only the question sentence is displayed to the audience watching the second image display device. Presented and only the presenter can refer to the answer by the first image display device. It is also possible to include in the explanatory material a memo that can be referred to only by the presenter when giving a presentation or the like.

  Patent Document 1 proposes a projection display device (projector) that can superimpose a decoration effect image on a part of an image to be displayed. If this projection display device is connected to the information processing device as the second image display device, a part of the image projected from the projection display device can be hidden by the decoration effect image.

WO99 / 40563 pamphlet

  However, in the projection display device described in Patent Document 1, it is necessary to set the position where the decoration effect image is to be superimposed while viewing the image displayed by the projection display device. ), The audience may see a part that should be hidden. In addition, since the superimposition position is set by a pointing device mounted on a remote control for remotely operating the projection display device, the operability is worse than when using a pointing device that is normally used, such as a mouse. Also, there is a problem that quick operation is difficult.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 An image display system according to this application example is an image display system including an information processing device, a first image display device, and a second image display device provided outside the information processing device. The information processing apparatus outputs image information to the first image display apparatus and the second image display apparatus, and displays an image based on the image information, respectively, An area setting unit for setting a part of the area displayed in the image displayed on the first image display device, and an area representing the area set by the area setting unit for the second image display device An area information output unit that outputs information, and the second image display device includes an image information input unit to which the image information is input, an area information input unit to which the area information is input, and the image Input to the information input unit A mask processing unit that performs mask processing for masking a region based on the region information input to the region information input unit with respect to the image information, and displays an image based on the image information subjected to the mask processing And a display unit.

  According to this image display system, the information processing device outputs region information representing the region set by the region setting unit to the second image display device, and the second image display device is based on the region information. Since the image is displayed by masking the area, the area masked by the second image display device can be referred to by the first image display device. In addition, since the information processing apparatus includes an area setting unit that sets an area to be masked, an image is displayed only on the first image display apparatus by stopping display of an image on the second image display apparatus. It is also possible to set the area. For this reason, it becomes possible to suppress the situation where the person who is looking at the 2nd image display device sees the field which should be masked, and the convenience improves. Note that the first image display device may be configured integrally with the information processing device or may be configured externally.

  Application Example 2 In the image display system according to the application example, it is preferable that the information processing apparatus further includes a display stop unit that stops display of the image by the second image display apparatus.

  According to this image display system, since the display stop unit for stopping the display of the image by the second image display device is provided, the display of the second image display device is stopped in advance by the display stop unit before the mask is displayed. By setting the area to be masked, it is possible to prevent the area to be masked from being displayed on the second image display device. In addition, the operation for setting the area and the operation for stopping the display of the second image display device can be performed only by the information processing device, so that the operation becomes easy.

  Application Example 3 In the image display system according to the application example described above, the area setting unit is limited to the part only when the display stop unit stops the display of the image by the second image display device. It is desirable to set this area.

  According to this image display system, since the area setting unit sets a part of the area only when the display stop unit stops displaying the image by the second image display device, the area to be masked is set. In doing so, it is possible to further suppress the situation where the region to be masked is seen.

  Application Example 4 In the image display system according to the application example described above, the information processing apparatus further includes a mask shape designating unit that designates the shape of the partial area, and the mask processing of the second image display apparatus. It is desirable that the part masks an area having a shape designated by the mask shape designation part.

  According to this image display system, since the shape of the area to be masked can be designated, masking according to the layout of the mask target (characters or figures to be masked) in the image becomes possible. For this reason, for example, even in an image in which characters and graphics are densely arranged, it is possible to suppress masking of unnecessary portions.

  Application Example 5 In the image display system according to the application example, the information processing apparatus further includes a mask color designating unit that designates a mask color, and the mask processing unit of the second image display device includes the mask. It is desirable to mask the partial area with a mask color designated by the color designation unit.

  According to this image display system, since a mask color can be designated, a mask according to the color arrangement (background color, etc.) of the image can be realized. For this reason, for example, if the mask color is matched with the background color of the image, the user does not need to be aware of whether or not the mask is in the masked state.

  Application Example 6 In the image display system according to the application example, it is preferable that the image information output unit of the information processing apparatus outputs the image information to the second image display apparatus via a network.

  According to this image display system, the image information output unit of the information processing device is configured to output image information to the second image display device via the network. The arrangement of the processing device and the second image display device is not limited by the length of the video cable, and the degree of freedom of layout of each device is increased.

  Application Example 7 In the image display system according to the application example, it is preferable that the network is a wireless network.

  According to this image display system, since the image information output unit of the information processing device outputs image information to the second image display device via the wireless network, the information processing device, the second image display device, This eliminates the need for a cable connection and further increases the degree of freedom in layout of each device.

  Application Example 8 An image display method according to this application example includes an information processing device, a first image display device, and a second image display device provided outside the information processing device, and the information An image display method of an image display system in which a processing device outputs image information to the first image display device and the second image display device, and displays an image based on the image information, respectively, A region setting step in which a processing device sets a partial region from an image displayed on the first image display device; and the information processing device sets the region to the second image display device. A region information output step for outputting region information representing the region set in the setting step; and a mask processing step in which the second image display device masks a region based on the region information among images based on the image information. Characterized by comprising the flop, the.

  According to this image display method, the information processing device outputs region information representing the set region to the second image display device, and the second image display device masks the region based on the region information. Therefore, the first image display device can refer to the area masked by the second image display device. In addition, in order to have the information processing device set the area to be masked, the image is displayed only on the first image display device by, for example, stopping the display of the image on the second image display device. It is also possible to do. For this reason, it becomes possible to suppress the situation where the person who is looking at the 2nd image display device sees the field which should be masked, and the convenience improves.

  Application Example 9 A program according to this application example is a computer that outputs image information to a first image display device and a second image display device provided outside, and displays an image based on the image information on each. In addition, an area setting step for setting a part of the image displayed on the first image display device, and an area set by the region setting step on the second image display device should be masked. And causing the second image display device to execute a region information output step of outputting region information representing the region.

  According to this program, the region information representing the set region is output to the second image display device, and the second image display device is caused to mask the region based on the region information. The area masked by the display device can be referred to by the first image display device. In addition, since the region to be masked is set by the computer, the image is displayed only on the first image display device, for example, by stopping the display of the image on the second image display device, and the region is set. Is also possible. For this reason, it becomes possible to suppress the situation where the person who is looking at the 2nd image display device sees the field which should be masked, and the convenience improves.

  Moreover, the said form and the said application example can also be comprised in aspects, such as a recording medium which recorded the said program so that reading with the said computer was possible. Recording media include flexible disks, CD-ROMs, magneto-optical disks, IC cards, ROM cartridges, punch cards, printed matter on which codes such as barcodes are printed, internal storage devices of the computer (memory such as RAM and ROM) Various media that can be read by the computer, such as an external storage device, can be used.

(First embodiment)
The image display system according to the first embodiment will be described below with reference to the drawings.
FIG. 1 is a perspective view showing an image display system of the present embodiment.
As shown in FIG. 1, the image display system 100 includes a computer 1 and an image display device 2 provided outside the computer 1. The computer 1 is, for example, a notebook personal computer, and includes a liquid crystal display 16 that is an image display device, a keyboard 20 that is an input device, and a touch pad 21 that is a pointing device. The computer 1 is provided with various interfaces so that the image display device 2 and an external mouse 30 can be connected. The image display device 2 is, for example, a projector, receives image information supplied from the computer 1, and displays an image corresponding to the image information on the screen (projection plane in the case of a projector) 2a. The computer 1 and the image display device 2 are connected by two cables: a video cable 3 for supplying image information from the computer 1 and a USB (Universal Serial Bus) cable 4 for supplying control information from the computer 1. Has been.

FIG. 2 is a block diagram illustrating a circuit configuration of the computer 1.
As shown in FIG. 2, the computer 1 includes a CPU (Central Processing Unit) 11, two bridge circuits (North Bridge 12 and South Bridge 13), a RAM (Random Access Memory) 14, a video controller 15, a liquid crystal display 16, A hard disk drive 17, an optical disk drive 18, a BIOS-ROM (Read Only Memory) 19 in which a BIOS (Basic Input / Output System) is written, a keyboard 20, a touch pad 21, and the like are provided.

  The CPU 11 performs overall control of the operation of the computer 1 by operating according to the BIOS written in the BIOS-ROM 19 or various programs read out to the RAM 14.

  The north bridge 12 performs bridge processing between the CPU 11 and the south bridge 13, control of the RAM 14, control of the video controller 15, and the like. The RAM 14 is configured by a DRAM (Dynamic RAM), and stores an OS (Operating System), an application program, and the like read from the hard disk drive 17. The RAM 14 is used for temporary storage of various data during program execution.

  The video controller 15 controls image display on the liquid crystal display 16. The video controller 15 includes a VRAM (Video RAM) 60, and sequentially generates image information in units of frames (screens) on the VRAM 60 based on instructions from the CPU 11 that executes the OS and application programs. Is output to the liquid crystal display 16 to display an image based on the image information on the screen 16a (see FIG. 1) of the liquid crystal display 16.

  Further, the video controller 15 can output image information to the external image display device 2 via the image output terminal 15a, and an image displayed on the screen 16a of the liquid crystal display 16 can be displayed on the image display device 2. Can also be displayed on the screen 2a. Furthermore, the video controller 15 can switch between a state in which image information is output from the image output terminal 15 a to the image display device 2 and a state in which output of image information is stopped based on an instruction from the CPU 11.

  Various interface circuits are built in the south bridge 13, and a hard disk drive 17, an optical disk drive 18, a BIOS-ROM 19, a keyboard 20, a touch pad 21, and the like are connected to the south bridge 13. The hard disk drive 17 stores the installed OS, application program, various data, and the like. The optical disk drive 18 reads data from an optical disk such as a CD (Compact Disc) or a DVD (Digital Versatile Disc) and writes data to the optical disk.

  The BIOS-ROM 19 stores a BIOS. The BIOS includes programs for controlling input / output devices such as the video controller 15, the hard disk drive 17, the keyboard 20, and the like, as well as programs that are read by the CPU 11 when the computer 1 is started and perform various initialization processes and OS startup. Basic input / output control for these input / output devices is provided to the OS and application programs. The CPU 11 that executes the OS and application programs can perform input / output with these input / output devices directly or via the BIOS.

  The keyboard 20 is an input device for inputting characters, control codes, and the like by key operations, and the touch pad 21 is used for moving or clicking a pointer P (see FIG. 1) displayed on the liquid crystal display 16 or the like. It is a pointing device for performing. The keyboard 20 and the touch pad 21 output an operation signal based on an operation performed by the user to the south bridge 13, and the south bridge 13 transmits the operation signal to the CPU 11 via the north bridge 12.

  The south bridge 13 includes a USB interface (not shown) to which a plurality of USB terminals (USB Type A terminals) 13a are connected, and data communication with an external input / output device is possible via the USB terminal 13a. It has become. A mouse 30 that is an external pointing device is connected to one of the USB terminals 13a of the present embodiment, and various operations can be performed using the mouse 30 instead of the built-in touch pad 21. Yes. The other USB terminal 13 a is connected to the image display device 2 that is a supply destination of image information, and the CPU 11 can output control information to the image display device 2.

Next, a schematic configuration of the image display device 2 will be described by taking a projector as an example.
FIG. 3 is a block diagram illustrating a schematic configuration of the image display device 2.
As shown in FIG. 3, the image display device 2 includes an image projection unit 40, a control unit 50, a storage unit 51, an input operation unit 52, an image information input unit 53, an image processing unit 54, a mask processing unit 55, and a control information input. It consists of part 56 grade | etc.,.

  The image projection unit 40 includes a light source 41, three liquid crystal light valves 42R, 42G, and 42B as a light modulation device, a projection lens 43 as a projection optical system, a light valve drive unit 44, and the like. The image projection unit 40 corresponds to a display unit, and modulates the light emitted from the light source 41 with the liquid crystal light valves 42R, 42G, and 42B to form an image (image light), and this image is a projection lens. The image is projected from 43 and displayed on a projection surface 2a such as a screen.

  The light source 41 includes a discharge-type light source lamp 41a composed of an ultra-high pressure mercury lamp, a metal halide lamp, or the like, and a reflector 41b that reflects light emitted from the light source lamp 41a toward the liquid crystal light valves 42R, 42G, and 42B. ing. Light emitted from the light source 41 is converted into light having a substantially uniform luminance distribution by an integrator optical system (not shown), and red (R), green (G), and blue that are the three primary colors of light by a color separation optical system (not shown). After being separated into each color light component of (B), it enters the liquid crystal light valves 42R, 42G and 42B, respectively.

  The liquid crystal light valves 42R, 42G, and 42B are configured by a liquid crystal panel in which liquid crystal is sealed between a pair of transparent substrates. The liquid crystal light valves 42R, 42G, and 42B are formed with a plurality of pixels (not shown) arranged in a matrix, and a driving voltage can be applied to the liquid crystal for each pixel. When the light valve driving unit 44 applies a driving voltage corresponding to the input image information to each pixel, each pixel is set to a light transmittance corresponding to the image information. Therefore, the light emitted from the light source 41 is modulated by transmitting through the liquid crystal light valves 42R, 42G, and 42B, and image light corresponding to the image information is formed for each color light. The formed image light of each color is synthesized for each pixel by a color synthesis optical system (not shown) to become image light representing a color image, and then enlarged and projected onto the projection plane 2a by the projection lens 43.

  The control unit 50 includes a CPU, a RAM used for temporary storage of various data, and the like, and performs overall control of the operation of the image display device 2 by operating according to a control program stored in the storage unit 51.

  The storage unit 51 is configured by a non-volatile memory such as a mask ROM, flash memory, or FeRAM (Ferroelectric RAM). The storage unit 51 stores a control program for controlling the operation of the image display device 2, various setting data for defining operation conditions of the image display device 2, and the like.

  The input operation unit 52 includes a plurality of operation keys for the user to give various instructions to the image display device 2. The operation keys provided in the input operation unit 52 include a “power key” for switching on / off the power, a “menu key” for displaying a setting menu for performing various settings, and the like. When the user operates various operation keys of the input operation unit 52, the input operation unit 52 outputs an operation signal corresponding to the operation content of the user to the control unit 50. The input operation unit 52 may be configured using a remote control (not shown) capable of remote operation. In this case, the remote control transmits an infrared operation signal corresponding to the user's operation content, and a remote control signal receiving unit (not shown) receives this and transmits it to the control unit 50.

  The image information input unit 53 includes a connection terminal (not shown) for connecting to an external image output device such as the computer 1 via the video cable 3 (see FIG. 1). The image information of various formats is input from. The image information input unit 53 outputs the input image information to the image processing unit 54.

  The image processing unit 54 converts various types of image information input from the image information input unit 53 into image information representing the gradation of each pixel of the liquid crystal light valves 42R, 42G, and 42B, that is, a drive voltage applied to each pixel. Convert to image information for prescription. Further, based on an instruction from the control unit 50, processing for adjusting image quality such as brightness, contrast, sharpness, and hue is performed on the converted image information. Image information that has undergone image quality adjustment or the like by the image processing unit 54 is output to the mask processing unit 55.

  Based on an instruction from the control unit 50, the mask processing unit 55 performs a process (mask processing) for masking a partial area of the image and hiding the image information input from the image processing unit 54. Apply. Specifically, the control unit 50 provides the mask processing unit 55 with region information indicating the size and position of the region to be masked, shape information indicating the shape of the region to be masked, and mask color (mask color). Is output, the mask processing unit 55 sets a mask area having a shape based on the shape information in the area based on the area information, and sets the image information to fill the mask area with a color based on the color information. Process. The image information subjected to the mask process is output to the light valve driving unit 44. Note that when there is an instruction from the control unit 50 not to perform mask processing, the mask processing unit 55 outputs the image information output from the image processing unit 54 to the light valve driving unit 44 as it is.

  When the light valve driving unit 44 drives the liquid crystal light valves 42R, 42G, and 42B according to the input image information, the liquid crystal light valves 42R, 42G, and 42B form images (image light) corresponding to the image information. An image is projected from the projection lens 43 onto the projection surface 2a.

  The control information input unit 56 includes a USB terminal (USB Type B terminal), and control information is input from a host device such as the computer 1 via the USB cable 4 (see FIG. 1). The control information input unit 56 outputs the input control information to the control unit 50. Control information related to mask processing, that is, control information including area information, shape information, and color information (hereinafter referred to as mask information) is input from the computer 1 to the control information input unit 56 of the present embodiment. . The control unit 50 instructs the mask processing unit 55 based on this control information.

Next, the operation of the image display system 100 will be described.
When the computer 1 is powered on, the CPU 11 performs boot processing in accordance with the BIOS stored in the BIOS-ROM 19 and starts up the OS stored in the hard disk drive 17 (reads into the RAM 14). Start operation. Then, the CPU 11 instructs the video controller 15 to display a predetermined image (initial screen) on the screen 16 a of the liquid crystal display 16.

  The OS employed in the computer 1 of the present embodiment includes a GUI (Graphical User Interface), and the user operates a pointing device such as the touch pad 21 and the mouse 30 in addition to the keyboard 20. Thus, it is possible to give various instructions to the computer 1.

  When the OS is activated, the CPU 11 instructs the video controller 15 to superimpose and display the pointer P on the image displayed on the liquid crystal display 16. The OS includes a device driver for communicating with the touch pad 21 and the mouse 30, and the CPU 11 can detect a moving operation or a click operation performed on the touch pad 21 or the mouse 30 by the device driver. it can. When a movement operation is performed on the touch pad 21 or the mouse 30, the CPU 11 moves the pointer P by changing the position where the pointer P is superimposed according to the movement operation of the user.

  When the activation of the OS is completed, the computer 1 is in a state where the application program can be activated, and the user can instruct activation of a desired application program by operating the keyboard 20, the touch pad 21, the mouse 30, or the like. it can. When the activation of the application program is instructed, the CPU 11 reads the instructed application program from the hard disk drive 17 into the RAM 14 and starts an operation according to the application program. The hard disk drive 17 of the present embodiment includes a mask utility MU (see FIG. 2) as an application program in addition to a word processor for creating a document and presentation software for creating and displaying a slide for presentation. Remembered (installed). The mask utility MU is a resident application program and has a function (mask function) for masking a part of an image to be displayed on the external image display device 2 and hiding it.

  FIG. 4 is a flowchart for explaining the operation of the CPU 11 based on the mask utility MU. FIGS. 5A and 5B show the screen 16 a of the liquid crystal display 16 and the screen 2 a of the external image display device 2. It is explanatory drawing. When the activation of the mask utility MU is instructed, the CPU 11 reads the mask utility MU from the hard disk drive 17 to the RAM 14 and operates according to the flow shown in FIG.

  As shown in FIG. 4, in step S <b> 101, the CPU 11 instructs the video controller 15 so that the image displayed on the screen 16 a of the liquid crystal display 16 is not displayed on the screen 2 a of the external image display device 2. Output of image information from the image output terminal 15a to the image display device 2 is stopped.

  Subsequently, in step S102, the CPU 11 instructs the video controller 15 to display a toolbar W1 (see FIG. 6) for using the mask function on the screen 16a of the liquid crystal display 16 (see FIG. 5A). )reference).

  Thereafter, the user can display a desired image W2 on the screen 16a of the liquid crystal display 16 by starting a desired application program and performing an operation of opening a file (see FIG. 5B). The operation for displaying the image W2 may be performed before starting the mask utility MU. The tool bar W1 is always set to be displayed in the foreground. Even when the image W2 is displayed on the full screen after the tool bar W1 is displayed, the tool bar W1 is not hidden by the image W2.

FIG. 6 is an explanatory diagram showing details of the toolbar W1.
As shown in FIG. 6, the tool bar W1 has a title bar T1 on which a title “mask utility” is written, and a plurality of buttons are arranged below the title bar T1. The toolbar W1 includes a display button B1 for switching the output state of image information to the image display device 2, a mask area setting button B2 for setting an area to be masked, and a mask release button for releasing the mask. There are B3, a mask shape designation button B4 for designating the shape of the area to be masked, and a mask color designation button B5 for designating the color of the mask. An end button B6 for ending the mask utility MU is arranged at the right end of the title bar T1. The user clicks on a desired button with the pointing device (touch pad 21 or mouse 30), that is, the user performs a click operation after positioning the pointer P on the desired button, so that the operation assigned to each button is performed. Can be executed by the CPU 11.

  Returning to FIG. 4, in step S <b> 103, the CPU 11 determines whether any of the buttons provided on the toolbar W <b> 1 has been clicked. If any button is clicked, the process proceeds to step S104. If no button is clicked, step S103 is repeated.

  When any button is clicked and the process proceeds to step S104, the CPU 11 determines whether or not the clicked button is the end button B6. When the end button B6 is clicked, the CPU 11 releases the area used by the mask utility MU from the RAM 14 and ends the program (mask utility MU). On the other hand, if any button other than the end button B6 is clicked, the process proceeds to step S105.

  When the process proceeds to step S105, the CPU 11 executes various processes (subroutines) corresponding to the clicked button, and then returns to step S103 of the flow (main routine). Here, the user can set an area to be masked by clicking on the mask area setting button B2 and then performing a drag operation with the pointing device.

  FIG. 7 is a flowchart of a subroutine executed when the mask area setting button B2 provided on the toolbar W1 is clicked. FIG. 8 shows the screen 16a of the liquid crystal display 16 and the screen 2a of the external image display device 2. It is explanatory drawing shown. When the user clicks the mask area setting button B2, the CPU 11 performs processing according to the flow shown in FIG. The mask area setting button B2 is effective only when the output of image information to the image display apparatus 2 is stopped so that the area to be masked is not displayed on the image display apparatus 2. In the state where the image information is output to 2, the area cannot be set.

  As shown in FIG. 7, in step S111, the CPU 11 determines whether or not a rectangular area is set by a drag operation of the pointing device. If the area is set, the process proceeds to step S112. If the area is not set, step S111 is repeated.

  When the area is set and the process proceeds to step S112, the CPU 11 determines the shape information indicating the shape of the area to be masked and the color information indicating the mask color together with the area information indicating the position and size of the set area. Is stored in the RAM 14. As the region information, for example, the coordinates of the upper left corner and the lower right corner of the set region can be used with the upper left corner of the screen 16a of the liquid crystal display 16 as the origin. As will be described later, the shape and mask color of the area to be masked can be designated in advance by the user. Here, a rectangle is designated as the area shape and black is designated as the mask color. Shall.

  Subsequently, in step S113, the CPU 11 highlights a set area, that is, an area based on mask information stored in the RAM 14 (hereinafter referred to as “mask area M”) on the screen 16a of the liquid crystal display 16. Therefore, the video controller 15 is made to process the image information (highlighting display process), and the processed image information is output to the liquid crystal display 16. As a result, the set mask area M is highlighted and displayed on the screen 16a of the liquid crystal display 16 (see FIG. 8). In order to emphasize the mask region M, for example, a process of enclosing the mask region M with a line or changing a color arrangement in the mask region M may be performed.

  After the above processing, the CPU 11 returns to the main routine and executes step S103 and subsequent steps. Thereafter, the user can display the image W2 displayed on the liquid crystal display 16 on the image display device 2 with the mask area M masked by clicking the display button B1 provided on the toolbar W1. .

  FIG. 9 is a flowchart of a subroutine executed when the display button B1 provided on the toolbar W1 is clicked. FIGS. 10A and 10B show the screen 16a of the liquid crystal display 16 and an external image display device. It is explanatory drawing which shows 2 screens 2a. When the user clicks the display button B1, the CPU 11 performs a process according to the flow shown in FIG.

  As shown in FIG. 9, in step S <b> 121, the CPU 11 determines whether or not the video controller 15 has stopped outputting image information to the external image display device 2. If the output of the image information is stopped, the process proceeds to step S122. If the output is the image information, the process proceeds to step S126.

  When the display button B1 is clicked and the process proceeds to step S122 while the output of the image information is stopped, the CPU 11 determines whether or not mask information is stored in the RAM. If mask information is stored, the process proceeds to step S123. If mask information is not stored, the process proceeds to step S125.

  If the mask information is stored on the RAM 14 and the process proceeds to step S123, the CPU 11 reads the mask information from the RAM 14 and outputs it to the external image display device 2 from the USB terminal 13a.

  In subsequent step S124, the CPU 11 instructs the video controller 15 to start outputting image information to the external image display device 2 from the image output terminal 15a. Thereafter, the CPU 11 returns to the main routine and executes step S103 and subsequent steps.

  When the mask information output in step S123 is input to the control information input unit 56 of the image display device 2, the control unit 50 of the image display device 2 displays the mask information (region information, shape information, and Color information) is output to the mask processing unit 55. As a result, the mask processing unit 55 performs mask processing based on the mask information on the image information output in step S124, and the image display device 2 displays the same image W2 as the liquid crystal display 16 in the mask area. M is displayed in a masked state (see FIG. 10A).

  On the other hand, if the mask information is not stored on the RAM 14 in step S122 and the process proceeds to step S125, for example, if the user clicks the display button B1 without setting the mask area M, the CPU 11 Control information indicating that the area to be set is not set is output from the USB terminal 13a to the external image display device 2. Thereafter, the CPU 11 proceeds to step S124 and starts outputting image information to the image display device 2 from the image output terminal 15a.

  When the control information is input to the control information input unit 56 of the image display device 2, the control unit 50 of the image display device 2 instructs the mask processing unit 55 not to perform mask processing. As a result, the image display device 2 displays an image based on the image information output in step S124, and the same image W2 is displayed on both the liquid crystal display 16 and the image display device 2 (FIG. 10 ( b)).

  Further, when the image information is being output to the image display device 2 in step S121 and the process proceeds to step S126, that is, when the display button B1 is clicked while the image information is being output. The CPU 11 instructs the video controller 15 to stop outputting image information to the external image display device 2, and then the CPU 11 returns to the main routine and executes step S103 and subsequent steps.

  When the display button B1 of the toolbar W1 is clicked, the CPU 11 operates as described above. Therefore, every time the display button B1 is clicked, the image display device 2 displays an image based on the image information. The state of non-displaying this is repeated alternately. If the mask information is stored in the RAM 14 when switching to the image display state, the image display device 2 displays the image in a state where the region (mask region M) based on the mask information is masked. To do.

  Note that the number of mask areas M is not limited to one per screen, and a plurality of mask areas M can be set in one screen by setting the mask area M multiple times using the mask area setting button B2. (See FIG. 11). In this case, a plurality of mask information is stored on the RAM 14, and in a state where the image display device 2 displays an image, a mask process is performed based on the plurality of mask information.

  Further, the user can cancel the mask of the existing mask area M by clicking the mask release button B3 provided on the toolbar W1, and when there are a plurality of mask areas M, A desired mask area M can be designated from the inside, and the mask of the mask area M can be released.

  FIG. 12 is a flowchart of a subroutine that is executed when the mask release button B3 provided on the toolbar W1 is clicked. When the user clicks the mask release button B3, the CPU 11 performs a process according to the flow shown in FIG.

  As shown in FIG. 12, in step S131, the CPU 11 determines whether or not the mask area M existing on the screen 16a of the liquid crystal display 16 has been designated by a click operation with the pointing device, that is, the pointer P to the existing mask area M. It is determined whether or not a click operation has been made with If the mask area M is designated by the click operation, the process proceeds to step S132, and if not designated, step S131 is repeated.

  When the existing mask area M is designated and the process proceeds to step S132, the CPU 11 erases the mask information of the designated mask area M from the RAM 14.

  In step S <b> 133, the CPU 11 causes the video controller 15 to cancel the highlighting that has been applied to the mask area M on the liquid crystal display 16. Specifically, when no mask information exists on the RAM 14 by erasing the mask information from the RAM 14 in step S132, the CPU 11 cancels all highlighting on the liquid crystal display 16. On the other hand, if other mask information still exists on the RAM 14 after the mask information is erased from the RAM 14 in step S132, only the region based on the existing mask information is highlighted again. Thereby, the highlighted display of the designated mask area M is canceled.

  In subsequent step S134, the CPU 11 causes the image display apparatus 2 to release the mask applied to the mask area M on the external image display apparatus 2. Specifically, when no mask information exists on the RAM 14 by erasing the mask information from the RAM 14 in step S132, the CPU 11 controls the control information indicating that the area to be masked is not designated. Is output from the USB terminal 13a to the image display device 2. On the other hand, if other mask information still exists on the RAM 14 after erasing the mask information from the RAM 14 in step S132, the existing mask information is output to the image display device 2 and an area based on this mask information is output. Only for, mask processing is performed again. As a result, the mask of the designated mask area M is released.

  As a result, the same content as that displayed on the liquid crystal display 16 is displayed in the unmasked area on the screen 2 a of the image display device 2. For example, as shown in FIG. 10A, when there is one mask area M in the screens 16a and 2a, if this mask area M is designated after the mask release button B3 is clicked, the liquid crystal Both the display 16 and the image display device 2 display the same image W2 that has not been subjected to the highlighting process or the mask process (see FIG. 10B). Thereafter, the CPU 11 returns to the main routine and executes step S103 and subsequent steps.

  Although illustration of the flowchart is omitted, the user can change the shape of the mask region M to a shape other than a rectangle by clicking the mask shape designation button B4 provided on the toolbar W1. Yes. When the mask shape designation button B4 is clicked, the CPU 11 instructs the video controller 15 to select one of a plurality of shapes (for example, a circle, an oval, a rectangle whose corners are arcs, etc.). A selectable list (not shown) is displayed on the liquid crystal display 16. When the user selects a desired shape from the list by clicking, the CPU 11 thereafter adds shape information corresponding to the selected shape to the mask information when a new mask region M is set. . Then, the mask processing unit 55 of the image display device 2 performs mask processing on the mask region M having a shape based on the shape information (see FIG. 13). When a rectangle is selected as the shape of the mask area M, the mask area M is the same as the rectangular area set by the drag operation. On the other hand, when a shape other than a rectangle is selected, the mask area M is determined to be inscribed in the rectangular area set by the drag operation.

  Furthermore, the user can change the mask color to a color other than black by clicking the mask color designation button B5 provided on the toolbar W1. When the mask color designation button B5 is clicked, the CPU 11 instructs the video controller 15 to display on the liquid crystal display 16 a list (not shown) from which one of a plurality of colors can be selected. When the user selects a desired color from the list by clicking, the CPU 11 thereafter adds color information corresponding to the selected color to the mask information when a new mask area M is set. . Then, the mask processing unit 55 of the image display device 2 fills the mask area M with a color based on the color information. Here, if the mask color is designated to be the same as the background color of the image W2, the audience who views the screen of the image display device 2 does not have to be aware of the presence of the mask region M (see FIG. 14).

  As described above, according to the image display system 100 of the present embodiment, the following effects can be obtained.

  (1) According to the image display system 100 of the present embodiment, the computer 1 outputs information (mask information) of the set mask region M to the external image display device 2, and the image display device 2 uses this mask. Since the image is displayed by masking the area based on the information, the contents in the masked area M can be referred to by the liquid crystal display 16.

  (2) According to the image display system 100 of the present embodiment, the computer 1 has the function of setting the mask area M, and the mask area M can be set with an image displayed only on the liquid crystal display 16. Therefore, it is possible to suppress a situation in which an area (contents to be hidden) to be masked is seen by an audience watching the image display device 2.

  (3) According to the image display system 100 of the present embodiment, the output of image information to the image display device 2 can be stopped by clicking the display button B1 on the computer 1, so that the mask region M The operation for setting and the operation for stopping the output of the image information to the image display device 2 can be performed only by the computer 1 (pointing device), and the operation becomes easy. In other words, before setting the mask area M on the computer 1, an operation for preventing the area to be masked from being displayed on the screen 2a of the image display device 2 (for example, an operation to turn off the power or the screen 2a). It is no longer necessary to perform an operation on the image display apparatus 2 to hide the image.

  (4) According to the image display system 100 of the present embodiment, the mask area M can be set only when the output of image information to the image display device 2 is stopped. It is possible to further suppress the situation where the audience sees the area to be masked.

  (5) According to the image display system 100 of the present embodiment, since the mask area M can be set by a familiar pointing device, the area setting can be easily performed as compared with the configuration in which the mask area M is set by the image display apparatus 2. Can be performed.

  (6) According to the image display system 100 of the present embodiment, the shape of the area to be masked can be designated by clicking the mask shape designation button B4. Etc.) can be masked according to the layout. For this reason, for example, even in an image in which characters and graphics are densely arranged, it is possible to suppress masking of unnecessary portions.

  (7) According to the image display system 100 of the present embodiment, the mask color can be designated by clicking the mask color designation button B5, so that the mask according to the color arrangement (background color, etc.) of the image is possible. For this reason, for example, if the mask color is matched with the background color of the image, the user does not need to be aware of whether or not the mask is in the masked state.

  (8) According to the image display system 100 of the present embodiment, since the mask region M is highlighted on the screen 16a of the liquid crystal display 16, the user simply looks at the screen 16a of the liquid crystal display 16. The mask area M can be easily recognized.

  (9) According to the image display system 100 of the present embodiment, since a desired region in the image can be masked when displaying the image, a masked file or the like is prepared in advance. There is no need. Further, even a file that cannot be corrected (a read-only file) can be easily displayed by masking a desired position.

  In the present embodiment, the liquid crystal display 16 corresponds to the first image display device, and the external image display device 2 corresponds to the second image display device. The video controller 15 and the image output terminal 15a that output image information to the liquid crystal display 16 and the image display device 2 correspond to an image information output unit. When the mask area setting button B2 on the tool bar W1 is clicked, the CPU 11, the video controller 15, the liquid crystal display 16, and the pointing device (touch pad 21 and mouse 30) when executing the flow shown in FIG. It corresponds to the part. The CPU 11, the south bridge 13, and the USB terminal 13 a when outputting mask information including area information to the image display device 2 corresponds to the area information output unit. Further, the CPU 11 and the video controller 15 when executing the step S101 (see FIG. 4) and the step S126 (see FIG. 9) to stop the output of the image information to the image display device 2 correspond to the display stop unit. The CPU 11, the video controller 15, the liquid crystal display 16, and the pointing device (touch pad 21 and mouse 30) when the mask shape designation button B4 is clicked correspond to the mask shape designation portion, and the mask color designation button B5 is displayed. The CPU 11, the video controller 15, the liquid crystal display 16, and the pointing device (touch pad 21 and mouse 30) when the click operation is performed correspond to a mask color designation unit. Further, the control information input unit 56 to which mask information including region information is input from the computer 1 corresponds to the region information input unit.

  Further, the software configuration of the computer 1 is not limited to the above. For example, the mask function of the mask utility MU can be included in an application program such as presentation software or a word processor.

  In this embodiment, when the display button B1 is clicked, the output of the image information to the image display device 2 is stopped. However, the image displayed on the liquid crystal display 16 is displayed on the image display device 2. If it is made not to display, it will not be limited to this mode. For example, image information of an image different from an image displayed on the liquid crystal display 16 such as a black or other color plain image or a predetermined image including a character string or a logo is output to the image display device 2. You may make it do. In this case, the VRAM 60 is divided into two areas, one of which generates image information to be output to the liquid crystal display 16 and the other generates image information to be output to the external image display device 2. That's fine.

(Second Embodiment)
The image display system according to the second embodiment will be described below.
FIG. 15 is a perspective view showing the image display system of the present embodiment. FIG. 16 is a block diagram illustrating a circuit configuration of the computer according to the present embodiment. FIG. 17 is a block diagram illustrating a schematic configuration of the image display apparatus according to the present embodiment.
As shown in FIG. 15, in the image display system 100 of the present embodiment, the computer 1 is not connected to the external image display device 2 by the video cable 3 and the USB cable 4, and image information, Control information such as mask information is supplied by wireless communication.

  As shown in FIG. 16, a wireless LAN device 22 for performing network communication with an external device by a wireless LAN (Local Area Network) is connected to the south bridge 13 of the computer 1 of the present embodiment. The computer 1 supplies (transmits) image information and control information to the image display apparatus 2 that can also perform network communication using the wireless LAN. In addition, the hard disk drive 17 stores an application program (wireless LAN connection tool CT) for performing wireless LAN connection with the image display device 2 and supplying image information and the like. Circuit configurations other than those described above are the same as those in the first embodiment.

  As shown in FIG. 17, the image display apparatus 2 of the present embodiment includes a wireless LAN communication unit 57 for performing network communication by wireless LAN, instead of the control information input unit 56 in the first embodiment. The wireless LAN communication unit 57 receives image information and control information transmitted from the computer 1. Here, when image information is received from the computer 1, the wireless LAN communication unit 57 outputs the received image information to the image processing unit 54, and when control information such as mask information is received from the computer 1. The received control information is output to the control unit 50. The image information received by the wireless LAN communication unit 57 is output to the image projection unit 40 after being subjected to image quality adjustment processing in the image processing unit 54 and mask processing in the mask processing unit 55 as necessary. An image corresponding to the image information is projected from the unit 40.

Next, the operation of the image display system 100 will be described.
When the user instructs the computer 1 in a state where the OS is activated to start the wireless LAN connection tool CT, the CPU 11 reads the wireless LAN connection tool CT stored in the hard disk drive 17 into the RAM 14 and follows this program. Operate.

18 to 22 are explanatory diagrams for explaining the operation based on the wireless LAN connection tool CT. Among these, FIGS. 18 to 20 are diagrams showing various images displayed on the liquid crystal display 16, and FIG. FIGS. 22A, 22 </ b> B, and 22 </ b> B are views showing a screen 16 a of the liquid crystal display 16 and a screen 2 a of the external image display device 2.
When the wireless LAN connection tool CT is activated, the CPU 11 displays a mode selection window W3 (see FIG. 18) on the screen 16a of the liquid crystal display 16 to allow the user to select a wireless LAN access mode.

  As shown in FIG. 18, in the mode selection window W3, “infrastructure mode” capable of connecting to a plurality of image display apparatuses 2 via an access point is communicated with one-to-one without going through an access point. “Ad hoc mode” can be selected, and the user can select one of the access modes by clicking the radio button RB provided in the mode selection window W3.

  When the access mode is selected by the user and the OK button B7 provided in the mode selection window W3 is clicked, the CPU 11 performs a broadcast by the wireless LAN device 22 and searches for an image display device 2 that can be connected to the wireless LAN. . Thereafter, the CPU 11 displays a connection window W4 (see FIG. 19) including the search result on the screen 16a of the liquid crystal display 16.

  As shown in FIG. 19, the connection window W4 displays a list DL of the searched image display apparatuses 2, and the list DL includes the status, apparatus name, and IP address of each image display apparatus 2. It is. The list DL is provided with a check box CB for each searched image display device 2, and the user designates the image display device 2 to be connected by clicking the check box CB. Can do. When the ad hoc mode is selected as the access mode, the user can designate only one image display device 2, and when the infrastructure mode is selected as the access mode, the user A plurality of image display devices 2 can be designated. A connection button B8 is provided in the lower right of the connection window W4, and the user clicks the connection button B8 after designating the image display device 2 to be connected to the designated image display device 2. Wireless LAN connection.

  When the connection button B8 is clicked by the user, the CPU 11 executes a wireless LAN connection with the designated image display device 2. Specifically, the CPU 11 transmits a connection request command from the wireless LAN device 22 to the designated image display device 2. In response to this connection request command, the image display device 2 transmits a connection response command for permitting connection to the computer 1, and when the wireless LAN device 22 of the computer 1 receives this command, the computer 1 and the image display device 2 communicate with each other. A wireless LAN connection is established.

  When the wireless LAN connection is established, the CPU 11 instructs the video controller 15 to delete the connection window W4 from the screen 16a of the liquid crystal display 16, and the toolbar W5 (see FIGS. 20 and 20) on the screen 16a of the liquid crystal display 16. 21 (a)) is displayed.

  As shown in FIG. 20, the toolbar W5 displayed on the liquid crystal display 16 has a title bar T2 on which the title “wireless LAN connection tool” is written, and a plurality of buttons are arranged below the title bar T2. The toolbar W5 includes five buttons similar to the toolbar W1 of the first embodiment, in addition to the disconnect button B10 for disconnecting the wireless LAN connection and the setting button B11 for performing settings related to the wireless LAN. There are buttons, that is, a display button B1, a mask area setting button B2, a mask release button B3, a mask shape designation button B4, and a mask color designation button B5.

  After displaying the tool bar W5 on the screen 16a of the liquid crystal display 16, the CPU 11 starts to supply image information to the image display device 2 via the wireless LAN. Thereafter, the CPU 11 sequentially captures images to be displayed on the liquid crystal display 16 by the video controller 15 and transmits the images as image information from the wireless LAN device 22 to the image display device 2. As a result, as shown in FIG. 21A, the image display device 2 starts displaying an image corresponding to the image information transmitted from the computer 1, and the screen 2a includes a screen 16a of the liquid crystal display 16. An image substantially the same as the displayed image is displayed. However, the wireless LAN connection tool CT is configured to capture an image that does not include the tool bar W5, and the tool bar W5 is not displayed on the screen 2a of the image display device 2.

  In this state, the user can display a desired image on the screen 16a of the liquid crystal display 16 by starting a desired application program and performing an operation of opening a file. Then, by clicking on a button provided on the toolbar W5, as in the first embodiment, a process for masking a part of the image displayed on the image display device 2 or canceling the masking, etc. 7, 9, and 12) can be performed by the computer 1.

  Similarly to the first embodiment, the mask area setting button B2 is used to display an image to the image display apparatus 2 so that an area to be masked is not displayed on the image display apparatus 2 when the mask area M is set. This is valid only when the information output is stopped, and the area cannot be set when the image information is output to the image display device 2. However, in this embodiment, when the wireless LAN connection is established, the image information is output from the wireless LAN device 22, that is, the image displayed on the screen 16a of the liquid crystal display 16 is also displayed on the screen 2a of the image display device 2. Since the screen is displayed, when the mask area M is set, it is necessary to stop the output of image information from the wireless LAN device 22 in advance by clicking the display button B1 in advance ( (Refer FIG.21 (b)).

  Then, as shown in FIG. 22A, after the output of the image information to the image display device 2 is stopped, the user displays a desired image W2 on the liquid crystal display 16, and further clicks the mask region setting button B2. When the mask area M is set by the operation and the subsequent drag operation, the CPU 11 highlights the mask area M on the screen 16a of the liquid crystal display 16 and stores the mask information in the RAM 14 as in the first embodiment. . Thereafter, when the display button B1 is clicked to start outputting the image information, the CPU 11 transmits the mask information stored in the RAM 14 from the wireless LAN device 22 to the image display device 2, and then the wireless LAN. Transmission of image information is started from the device 22.

  Here, when the mask information output from the computer 1 is input to the wireless LAN communication unit 57 of the image display device 2, the control unit 50 of the image display device 2 causes the mask information (region information, shape information, and Color information) is output to the mask processing unit 55. As a result, the mask processing unit 55 performs mask processing based on the mask information on the image information that is subsequently transmitted, and the image display device 2 displays the image W2 that is substantially the same as the liquid crystal display 16 in the mask. The area M is displayed in a masked state (see FIG. 22B).

  As in the first embodiment, the operation for displaying the image W2 may be performed before the wireless LAN connection tool CT is activated. The toolbar W5 is always set to be displayed in the foreground. Even when the image W2 is displayed on the full screen after the toolbar W5 is displayed, the toolbar W5 is not hidden by the image W2.

  As described above, according to the computer 1 of the present embodiment, the following effects can be obtained in addition to the effects of the first embodiment.

  (1) According to the computer 1 of the present embodiment, the image information is output to the external image display device 2 via a wireless network (wireless LAN). No cable connection is required, increasing the degree of freedom in layout.

  In the present embodiment, the video controller 15 and the wireless LAN device 22 that output image information to the liquid crystal display 16 and the image display device 2 respectively correspond to an image information output unit. The CPU 11 and the wireless LAN device 22 when outputting mask information including area information to the image display apparatus 2 correspond to the area information output unit. Further, the CPU 11 and the wireless LAN device 22 when stopping the output of the image information to the image display device 2 correspond to a display stop unit. The wireless LAN communication unit 57 to which mask information including region information is input from the computer 1 corresponds to the region information input unit.

  In the present embodiment, when the display button B1 is clicked, the output of the image information to the image display device 2 is stopped. However, the captured image, that is, the image displayed on the liquid crystal display 16 is displayed. As long as it is not displayed on the image display device 2, it is not limited to this mode. For example, image information of an image different from the captured image, such as a black or other color plain image, a predetermined image including a character string, a logo, or the like, may be output.

  Further, in the present embodiment, a configuration in which image information is output via a wireless network is shown, but a configuration in which image information is output via a wired network is also possible. Even in this case, the arrangement of the computer 1 and the image display device 2 is not limited by the length of the video cable 3 or the USB cable 4 as compared with the configuration in which the image information is output via the video cable 3, and the layout can be reduced. Increased freedom.

(Modification)
In addition, you may change the said embodiment as follows.

  In the embodiment, the configuration in which the mask region M can be set only when the output of the image information to the external image display device 2 is stopped is shown. However, the present invention is not limited to this mode. The mask area M may be set regardless of the output state.

  In the embodiment, the output of the image information is stopped by operating the display button B1 so that the area to be masked is not displayed on the image display device 2 when the mask area M is set. However, the present invention is not limited to this embodiment. For example, before setting the mask area M on the computer 1, an operation for preventing the area to be masked from being displayed on the screen 2a of the image display device 2 (for example, an operation to turn off the power or the screen 2a And the like may be performed on the image display device 2.

  In the embodiment, as an example of the information processing apparatus, a notebook personal computer integrally provided with an image display device (liquid crystal display 16), an input device (keyboard 20), and a pointing device (touch pad 21) has been described. The information processing apparatus is not limited to a notebook personal computer. For example, an information processing apparatus (computer) having a configuration in which all or part of an image display device, an input device, and a pointing device are externally attached, such as a desktop personal computer, may be used.

  In the above-described embodiment, an example in which a projector is used as the external image display device 2 has been described. However, a rear projector integrally provided with a transmissive screen, a liquid crystal display, a plasma display, a surface-conduction electron (SED), or the like. It is also possible to use an emitter display), an organic EL (Electro Luminescence) display, or the like.

  In the above embodiment, the touch pad 21 and the mouse 30 are used as the pointing device. However, other pointing devices such as a trackball, a joystick, and a pen tablet can be used.

The perspective view which shows the image display system of 1st Embodiment. The block diagram which shows the circuit structure of the computer of 1st Embodiment. 1 is a block diagram showing a schematic configuration of an image display device according to a first embodiment. The flowchart for demonstrating operation | movement of CPU based on a mask utility. (A), (b) is explanatory drawing which shows the screen of a liquid crystal display and an external image display apparatus. Explanatory drawing which shows the detail of the toolbar of 1st Embodiment. The flowchart of the subroutine performed when the mask area | region setting button is click-operated. Explanatory drawing which shows the screen of a liquid crystal display and an external image display apparatus. The flowchart of the subroutine performed when a display button is click-operated. (A), (b) is explanatory drawing which shows the screen of a liquid crystal display and an external image display apparatus. Explanatory drawing which shows the screen of a liquid crystal display and an external image display apparatus. The flowchart of the subroutine performed when a mask release button is click-operated. Explanatory drawing which shows the screen of a liquid crystal display and an external image display apparatus. Explanatory drawing which shows the screen of a liquid crystal display and an external image display apparatus. The perspective view which shows the image display system of 2nd Embodiment. The block diagram which shows the circuit structure of the computer of 2nd Embodiment. The block diagram which shows schematic structure of the image display apparatus of 2nd Embodiment. Explanatory drawing which shows the mode selection window displayed on a liquid crystal display in 2nd Embodiment. Explanatory drawing which shows the connection window displayed on a liquid crystal display in 2nd Embodiment. Explanatory drawing which shows the tool bar displayed on a liquid crystal display in 2nd Embodiment. (A), (b) is explanatory drawing which shows the screen of a liquid crystal display and an external image display apparatus. (A), (b) is explanatory drawing which shows the screen of a liquid crystal display and an external image display apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Computer, 2 ... Image display apparatus, 3 ... Video cable, 4 ... USB cable, 11 ... CPU, 12 ... North bridge, 13 ... South bridge, 13a ... USB terminal, 14 ... RAM, 15 ... Video controller, 15a ... Image output terminal, 16 ... Liquid crystal display, 17 ... Hard disk drive, 18 ... Optical disk drive, 19 ... BIOS-ROM, 20 ... Keyboard, 21 ... Touchpad, 30 ... Mouse, 40 ... Image projection unit, 41 ... Light source, 42R, 42G, 42B ... Liquid crystal light valve, 43 ... Projection lens, 44 ... Light valve drive unit, 50 ... Control unit, 51 ... Storage unit, 52 ... Input operation unit, 53 ... Image information input unit, 54 ... Image processing unit, 55 ... Mask processing unit, 56 ... Control information input unit, 57 ... Wireless LAN communication unit, 60 ... VRAM, 100 ... Image Display system, MU ... mask utility, M ... mask area, W1 ... toolbar, B1 ... display button, B2 ... mask area setting button, B3 ... mask release button, B4 ... mask shape designation button, B5 ... mask color designation button.

Claims (9)

An image display system having an information processing device, a first image display device, and a second image display device provided outside the information processing device,
The information processing apparatus includes:
An image information output unit that outputs image information to the first image display device and the second image display device, and displays an image based on the image information, respectively;
An area setting unit for setting a partial area from the image displayed on the first image display device;
An area information output unit that outputs area information representing an area set by the area setting unit to the second image display device;
With
The second image display device includes:
An image information input unit for inputting the image information;
An area information input unit for inputting the area information;
A mask processing unit that performs a mask process for masking a region based on the region information input to the region information input unit with respect to the image information input to the image information input unit;
A display unit for displaying an image based on the image information subjected to the mask processing;
An image display system comprising: The image display system according to claim 1,
The information processing apparatus further includes a display stop unit that stops the display of the image by the second image display apparatus. The image display system according to claim 2,
The image display system, wherein the area setting unit sets the partial area only when the display stop unit stops the display of the image by the second image display device. The image display system according to any one of claims 1 to 3,
The information processing apparatus further includes a mask shape designating unit that designates the shape of the partial area,
The image display system, wherein the mask processing unit of the second image display device masks a region having a shape designated by the mask shape designating unit. The image display system according to any one of claims 1 to 4,
The information processing apparatus further includes a mask color designating unit that designates a mask color,
The image display system, wherein the mask processing unit of the second image display device masks the partial area with a mask color designated by the mask color designation unit. The image display system according to any one of claims 1 to 5,
The image information output unit of the information processing device outputs the image information to the second image display device via a network. The image display system according to claim 6,
The image display system, wherein the network is a wireless network. An information processing device; a first image display device; and a second image display device provided outside the information processing device, wherein the information processing device includes the first image display device and the second image display device. An image display method of an image display system for outputting image information to an image display device and displaying an image based on the image information on each,
An area setting step for causing the information processing apparatus to set a partial area from an image displayed on the first image display apparatus;
A region information output step in which the information processing device outputs region information representing the region set in the region setting step to the second image display device;
A mask processing step in which the second image display device masks a region based on the region information among images based on the image information;
An image display method comprising: A computer that outputs image information to a first image display device and a second image display device provided outside, and displays an image based on the image information on each,
An area setting step for setting a partial area from an image displayed on the first image display device;
An area information output step for outputting area information representing the area to the second image display apparatus in order to cause the second image display apparatus to mask the area set in the area setting step;
A program for running

Images