JP5835404B2 - Image display device and method for controlling image display device - Google Patents

Description

  The present invention relates to an image display device, and more particularly to a technique for controlling the configuration of an operation unit for operating the image display device.

  Projectors are widely used. As a medium for supplying image data to a projector, portable external devices such as a universal serial bus (USB) memory and a memory card that are directly connected to the projector are recently used. Such a projector is provided with a USB terminal and a card slot, and detects the connection of an external device to the USB terminal or the card slot so that the user can select a drive (connected external device). (For example, Patent Document 1).

JP 2008-96878 A

  However, in the conventional technology, the operation that is required by the user is different between the case where the data is acquired and displayed directly from the external device and the case where the image data is acquired and displayed via the computer. The user interface, such as the department and menu, has the same settings, and has not been fully devised.

  The present invention has been made in view of the above-described problems, and an object thereof is to improve user operability in an image display apparatus that directly acquires and displays data from an external device.

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. One aspect of the present invention is an image display device that displays an image on a first display unit, the first connection means for connecting a portable storage medium storing image data; and outputting a video signal A second connecting means for connecting the image supply device to be inputted and inputting a video signal outputted from the image supply device; image data stored in the portable storage medium or inputted from the image supply device An image display means for displaying an image on the first display section based on a video signal; an operation section for operating the image display apparatus; and the portable storage medium is connected to the first connection means. And a control means for controlling the function assigned to the operation unit to be different between the case where the image supply apparatus is connected to the second connection means; means The control means edits a figure or a character string included in the image data as a function substituted for the operation unit when the portable storage medium is connected to the first connection means. Control is performed so that the function executed by the editing means is substituted for the operation unit. In such a form, when a portable storage medium is connected to the connection means, the operation item includes image data editing, so that the user can easily edit the image data. . In addition, the present invention can be realized in the following forms.

[Application Example 1]
An image display device for displaying an image on a display unit, the connection means for connecting a portable storage medium storing image data, and the image data stored in the portable storage medium, Image display means for displaying an image on a display section, an operation section for operating the image display apparatus, and an operation screen display means for displaying an operation screen for operating the image display apparatus, the connection means When the portable storage medium is connected to the portable storage medium, an operation screen that displays an operation screen depending on predetermined image processing for displaying an image on the display unit using image data stored in the portable recording medium And an image display device.

  According to the image display device of application example 1, when a portable storage medium is connected, an operation screen depending on predetermined image processing for displaying an image using image data stored in the portable recording medium is displayed on the display unit. Is done. Therefore, when the portable storage medium is connected, the user can operate the projector using an operation screen that depends on predetermined image processing for displaying an image using image data stored in the portable storage medium. Therefore, the user can easily perform predetermined image processing using the image data stored in the portable storage medium, and the operability of the user can be improved.

[Application Example 2]
In the image display device according to the application example 1, the operation screen display unit is configured such that when the portable storage medium is connected to the connection unit, the portable storage medium is connected to the connection unit. An operation screen including predetermined information that can be visually recognized by the user is displayed. According to the image display device of the application example 2, the predetermined information indicating that the portable storage medium is connected is displayed on the operation screen. Therefore, the user can easily confirm that the image processing is executed using the image data stored in the portable storage medium.

[Application Example 3]
The image display device according to the application example 1 or the application example 2 further includes an editing unit capable of editing image data stored in the portable storage medium, and the predetermined image processing includes editing the image data. When the portable storage medium is connected to the connection unit, the operation screen display unit displays an operation screen including an operation item for instructing execution of editing of the image data. In general, when image data is acquired from a computer and image processing is performed, the image data is edited by the computer, and thus is not edited on the image display device side, but directly from a portable storage medium. When image processing is performed by acquiring data, the image display device needs to have an editing function in order to edit image data without using a computer. That is, in the image display apparatus, the editing process is a process included in a predetermined image process depending on the case where image data is directly acquired from a portable storage medium and image processing is performed. Therefore, according to the image display device of the application example 3, when a portable storage medium is connected to the connection unit, the operation item includes image data editing, and thus the user can easily edit the image data. It can be performed.

[Application Example 4]
In the image display device according to the application example 1, the predetermined image processing includes selection of image data representing an image to be displayed on the display unit, and the operation screen display unit is connected to the connection unit. When a portable storage medium is connected, an operation screen for selecting the image data is displayed on the display unit. According to the image display device of application example 4, when a portable recording medium is connected, an operation screen for selecting image data is displayed. Therefore, the user operation for calling up the operation screen for selecting the image data can be omitted, so that the convenience of the user can be improved.

[Application Example 5]
An image display device for displaying an image on a first display unit, wherein a first connection means for connecting a portable storage medium storing image data and an image supply device for outputting a video signal are connected. The second connection means for inputting the video signal output from the image supply device, the image data stored in the portable storage medium or the video signal input from the image supply device, An image display means for displaying an image on the first display section; a case where the portable storage medium is connected to the first connection means; and a case where the image supply device is connected to the second connection means. And a control means for controlling the function assigned to the operation unit to be different. According to the image display device of Application Example 5, when a portable storage medium is connected, the configuration of the operation unit is controlled so that a function different from that when the image supply device is connected is assigned. Therefore, user operability can be improved.

[Application Example 6]
The image display device according to Application Example 5 further includes: a second display unit; and an operation screen display unit that displays an operation screen constituting the operation unit on the second display unit. When the portable storage medium is connected to the first connection means, it depends on predetermined image processing for displaying an image on the first display unit using image data stored in the portable storage medium The operation screen display means is controlled to display the operated screen on the second display unit. According to the image display device of Application Example 6, when the portable storage medium is connected, the operation screen depending on the predetermined image processing is displayed on the second display unit. Therefore, an operation screen that allows a user to easily execute a function that depends on predetermined image processing can be provided, so that the operability of the user can be improved.

[Application Example 7]
An image display device suitable examples 6, further wherein comprising an editing unit capable of editing the image data, wherein the predetermined image processing includes editing execution of the image data, said control means, said first When the portable storage medium is connected to the connection unit, an operation screen including an editing instruction unit for instructing the editing unit to execute editing of the image data is displayed on the second display unit. The operation screen display means is controlled. According to the image display device of Application Example 7, the operation screen includes an editing instruction unit for instructing editing execution of image data stored in the portable storage medium. Therefore, image data can be easily edited when a portable storage medium is connected.

[Application Example 8]
In the image display device according to the application example 6, the operation unit includes a physical key to which a function for operating the image display device is assigned, and the control unit includes the first connection unit. The function assigned to the key is changed between the case where the portable storage medium is connected and the case where the image supply device is connected to the second connection means. According to the image display device of the application example 8, the function assigned to the key provided in the operation unit is changed when the portable storage medium is connected and when the computer is connected. Therefore, an operation unit depending on image processing using a portable storage medium can be provided to the user without newly preparing an operation key for image processing using the portable storage medium.

[Application Example 9]
The image display device according to the application example 8 further includes an editing unit capable of editing the image data, the predetermined image processing includes execution of editing the image data, and the control unit includes the first display unit. When the portable storage medium is connected to the connecting means, a function for instructing the editing means to execute editing of the image data is assigned to the key. According to the image display device of application example 8, a function is assigned to the key of the operation unit in order to instruct execution of editing of image data stored in the portable storage medium. Therefore, image data can be easily edited when a portable storage medium is connected without preparing an operation unit for editing image data.

  In the present invention, the various aspects described above can be applied by appropriately combining or omitting some of them. For example, it can be configured as a control method for controlling the configuration of the operation unit of the image display device, a computer program for controlling the configuration of the operation unit of the image display device, a computer-readable recording object on which the computer program is recorded, and the like. . In any configuration, the above-described aspects can be appropriately applied. As the recording object readable by the computer, various objects such as a flexible disk, a CD-ROM, a DVD-ROM, a magneto-optical disk, an IC card, and a hard disk can be used.

Explanatory drawing which illustrates the system configuration | structure of the projector as an image display apparatus in 1st Example. The block diagram which illustrates the functional block of projector 10 in the 1st example. 6 is a screen example showing screens displayed when a USB memory is connected and when a computer is connected in the first embodiment. The example of a screen which shows the thumbnail screen 310 in 1st Example. 6 is a screen example showing a slide selection screen 320 and an edit item selection screen 330 in the first embodiment. The example of a screen which shows the edit execution screen 340 in 1st Example. Explanatory drawing which illustrates schematic structure of the projector 10a in 2nd Example. Explanatory drawing which illustrates the operation part in 3rd Example. Explanatory drawing which illustrates the function allocation table in 3rd Example. Explanatory drawing which illustrates the projection system in a modification.

A. First embodiment:
A1. System configuration:
FIG. 1 is an explanatory diagram illustrating a schematic configuration of a projector as an image display device in the first embodiment. FIG. 1A shows the system configuration of the projector 10, and FIG. 1B shows the operation unit 510 of the projector 10. The projector 10 includes a USB interface 30 for connecting the USB memory 50, a PC interface 31 for connecting a computer (not shown), and an operation unit 510. The USB memory 50 stores image data to be displayed on the screen SC. The projector 10 acquires image data directly from the USB memory 50 via the USB interface 30, or acquires a video signal from a computer via the PC interface 31, and obtains an optical image according to the acquired image data or video signal. Then, an optical image is projected onto the screen SC via the projection lens. In the first embodiment, when the projector 10 detects that the USB memory 50 is connected, the operation screen depending on predetermined image processing for displaying an image using the image data stored in the USB memory 50 is used. Is displayed. The “operation screen depending on predetermined image processing” will be described in detail later. In the first embodiment, the projector 10 corresponds to “image display device” in the claims, the USB interface 30 corresponds to “first connection means” in the claims, and the PC interface 31 corresponds to “ The USB memory 50 corresponds to the “portable recording medium” in the claims, the screen SC corresponds to the “display unit” and the “first display unit” in the claims, and the computer This corresponds to the “image supply device” in the claims.

  As shown in FIG. 1B, the operation unit 510 includes a plurality of buttons to which functions for operating the projector 10 are assigned. “A function is assigned to a button” indicates that the function is executed by button selection. The operation unit 510 includes a button 511 for setting a color mode, a button 512 for setting an aspect ratio, and a button for correcting a trapezoidal distortion generated in an image on the screen SC due to the tilt of the projector 10. A selection button 514 including buttons 514a to 514d for performing various selections and a determination button 515 for determining an operation are displayed.

A2. Function block:
FIG. 2 is a block diagram illustrating the configuration of the projector 10 in the embodiment. In addition to the USB interface 30, the PC interface 31, and the operation unit 510 described in FIG. 1A, the projector 10 includes an illumination optical system 100, a light source lamp driving unit 110, a liquid crystal light valve 120, and a liquid crystal light valve driving. Unit 130, projection optical system 140, projection optical system adjustment unit 150, CPU 160, image acquisition unit 162, image processing unit 164, editing unit 166, and control unit 168. In FIG. 2, each optical system is simply described. CPU 160 controls the overall operation of projector 10. The operation panel 530 will be described in a second embodiment described later. The operation panel 530 is not provided in the projector 10 of the first embodiment.

  The light source lamp driving unit 110 drives a light source lamp included in the illumination optical system 100. The liquid crystal light valve driving unit 130 drives the liquid crystal light valve 120 according to the image data given from the image processing unit 164. The projection optical system adjustment unit 150 adjusts the position of the projection optical system 140 in accordance with an input from the user. Specifically, the projection optical system adjustment unit 150 moves a lens included in the projection optical system 140 or adjusts a shift position in a direction perpendicular to the light source optical axis LA. The light source optical axis LA means the central axis of light emitted from the illumination optical system 100, and passes through the center of the image projected by the liquid crystal light valve 120 on the screen SC.

  The image acquisition unit 162 acquires image data from the USB memory 50 via the USB interface 30, or acquires a video signal from a computer via the PC interface 31, and uses the acquired image data or video signal as the image processing unit 164. Pass to. The image processing unit 164 performs various image processing on the image data transferred from the image acquisition unit 162 to generate corrected image data, and transfers the corrected image data to the liquid crystal light valve driving unit 130. Various image processing includes, for example, various processes such as correction of trapezoidal distortion and aspect ratio in addition to adjustment of image quality such as brightness, contrast, and hue.

  The liquid crystal light valve driving unit 130 drives the liquid crystal light valve 120 based on the received image data (operation screen data representing the operation screen, corrected image data), and displays image data represented by the image data. . The liquid crystal light valve driving unit 130, the liquid crystal light valve 120, the projection optical system adjustment unit 150, and the projection optical system 140 correspond to “image display means” in the claims. In the first embodiment, the operation screen data may be stored in advance in a storage medium such as a memory or a hard disk (not shown) of the projector 10 or may be appropriately generated by the control unit 168.

  The editing unit 166 has a function of application software capable of editing image data and a function of displaying a software keyboard, and edits image data acquired from the USB memory 50 in accordance with a user instruction. The editing unit 166 corresponds to “editing means” in the claims.

  The control unit 168 provides different user interfaces when the USB memory 50 is connected to the USB interface 30 and when a computer is connected to the PC interface 31. Specifically, when the USB memory 50 that is a portable storage medium is connected to the USB interface 30, the image data in the USB memory 50 is acquired and predetermined image processing for displaying an image on the screen SC is performed. An operation screen including an operation item for executing the dependent function is displayed on the screen SC. In other words, “an operation screen depending on predetermined image processing for acquiring image data in the USB memory 50 and displaying an image on the screen SC” is, in other words, “acquiring image data in the USB memory 50 and screen. It can also be said to be a “dedicated operation screen for displaying an image on the SC”. In the first embodiment, “predetermined image processing” includes, for example, acquisition processing for acquiring an image represented by image data, display processing for displaying a screen for allowing the user to select image data, Display processing for displaying on the SC and editing processing for editing the image data are included. The control unit 168 includes a function of “operation screen display means” in the claims.

A3. Example of operation screen:
A display example of the operation screen in the first embodiment will be described with reference to FIGS. 3 to 7 are screen examples showing operation screens in the first embodiment. FIG. 3A shows an image displayed on the screen SC when the computer is connected to the PC interface 31, and FIG. 3B shows that the USB memory 50 is connected to the USB interface 30. In this case, an operation screen 301 displayed on the screen SC is shown.

  As shown in FIG. 3 (a), when a computer is connected to the PC interface 31, in other words, in image processing for obtaining a video signal from the computer and displaying it on the screen SC, a screen displayed on the computer display Is displayed as an image (video) 300 on the screen SC. Thus, even when the computer is connected to the PC interface, a dedicated operation screen is not displayed on the screen SC.

  On the other hand, as shown in FIG. 3B, when the USB memory 50, which is a portable storage medium, is connected to the USB interface 30, in other words, image data is acquired from the USB memory 50 and displayed on the screen SC. In image processing, the operation screen 301 includes an icon 302 representing the USB memory 50 that is a connected portable storage medium, and a function that depends on image processing using image data stored in the USB memory 50. An operation menu 304 is displayed. The “function depending on image processing using image data stored in the USB memory 50” is performed when acquiring image data stored in a portable storage medium and displaying an image instead of a computer. It represents functions related to various image processing. Hereinafter, in the present specification, the “function depending on image processing using image data stored in the USB memory 50” will be referred to as “medium dependent function”. In the first embodiment, the medium-dependent function includes a thumbnail function for displaying a reduced image of image data stored in the USB memory 50, an editing function for editing image data stored in the USB memory 50, and a USB A removal function for removing the memory 50 from the projector 10 is included. The medium-dependent function is not limited to these functions, and may include various functions as appropriate. Hereinafter, in the embodiment, the “operation screen” indicates what is displayed by the control unit 168 of the projector 10.

  In the first embodiment, the operation menu 304 includes operation items for executing functions such as “thumbnail”, “edit”, and “remove USB memory” which are medium-dependent functions. When “Thumbnail” is selected, a thumbnail screen for displaying a list of reduced images of image data stored in the USB memory 50 is displayed on the screen SC. When “Edit” is selected, the thumbnail screen is stored in the USB memory 50. An editing screen for editing the image data is displayed on the screen SC. When “Remove USB Memory” is selected, the projector 10 is controlled so that the USB memory can be removed while the projector 10 is powered on. The operation item can be selected using the operation unit 510 or a remote controller (not shown). In the first embodiment, each operation item of the operation menu 304 corresponds to an “operation item” in the scope of claims, and the icon 302 indicates that “a portable storage medium is connected to the connection means in the scope of claims”. This corresponds to “predetermined information that can be visually recognized by the user”.

  Here, the reason why the function included in the operation menu 304 is a medium-dependent function will be described below. When the projector 10 and the computer are connected, image data to be displayed can be selected and edited by operating the computer. However, when the image data is acquired from the USB memory 50 and displayed on the screen SC, It is preferable that the projector 10 can select image data and edit image data if necessary. Therefore, thumbnail display and image data editing by the projector 10 is an unnecessary function in image processing for acquiring image data from a computer and displaying the image, while acquiring image data from the USB memory 50 and displaying the image. This is a necessary function in image processing. For this reason, functions such as a thumbnail display function and an editing function are included in the medium-dependent function.

  Note that FIGS. 3A and 3B have described examples of screens when a device is connected to either the USB interface 30 or the PC interface 31, but for example, other external devices such as When a storage medium connecting means such as a memory card or DVD is provided and a plurality of storage media are connected to the projector 10, a medium selection screen for selecting which external device to select is displayed. May be. The operation screen 301 may be displayed after the user selects a portable storage medium such as a memory card or a DVD. At this time, instead of the icon 302, an icon representing the selected portable storage medium may be displayed.

  FIG. 4 is a screen example showing an operation screen (thumbnail screen) in the first embodiment. FIG. 4 shows an operation screen 310 when “thumbnail” is selected on the operation screen 301 of FIG. Hereinafter, the operation screen 310 is referred to as a thumbnail screen 310. The thumbnail screen 310 determines the operation of the image files 311 to 316 (file names “file01” to “file06”) stored in the USB memory 50, the icon 302, and the button return 318 for returning to the operation screen 301. And a determination button 319 for performing. While viewing the thumbnail screen 310 displayed on the screen SC, the user operates the operation unit 510 to select a desired image file. CPU 160 performs image processing for displaying the selected image file, and displays the image on screen SC. Examples of image files that can be displayed by the projector 10 include various types of formats such as PowerPoint (registered trademark), Word (Word (registered trademark)), Excel (Excel (registered trademark)), PDF (registered trademark), and moving images. Files are included.

  5 and 6 are screen examples showing an operation screen (editing screen) in the first embodiment. When “edit” is selected in FIG. 3B, a selection screen (an operation screen similar to FIG. 4) for selecting an image file to be edited is displayed. When an image file is selected on the selection screen, An operation screen 320 shown in FIG. 5A is displayed. In the first embodiment, an operation screen when editing a slide-type file (for example) will be described as an example. Hereinafter, the operation screen 320 is referred to as a slide selection screen 320. The slide selection screen 320 includes an icon 302, slide data 322a to 322j constituting the selected image file, and a button 323 for returning to a selection screen (not shown) for selecting an image file to be edited. The slide data 322a to 322j are images obtained by reducing and displaying each slide. The user operates the operation unit 510 to select a slide to be edited. For example, on the slide selection screen 320, the state in which the sixth slide data 322f is selected is indicated by a bold line.

  When a slide to be edited is selected, an operation screen 330 shown in FIG. 5B is displayed. Hereinafter, the operation screen 330 is referred to as an edit item selection screen 330. On the edit item selection screen 330, the operation unit 510 is operated to select a target item to be edited from the graphic 331 and the character strings 332 to 334. The selected graphic / character string is displayed so that the user can visually recognize that the graphic / character string is selected. In the first embodiment, as shown in the edit item selection screen 330, the selected character string 334 is surrounded by a cursor frame so that the user can easily confirm that it is selected. In addition, for example, the selected graphic / character string may be displayed in reverse, enlarged, or highlighted.

  When a graphic / character string to be edited is selected, an operation screen 340 shown in FIG. 6 is displayed. The operation screen 340 is a screen for executing editing. Hereinafter, the operation screen 340 is referred to as an editing execution screen 340. The edit execution screen 340 includes an edit target 341, a software keyboard 342, an icon 302, a determination button 343 that reflects editing, and a cancel button 344 that cancels editing. The editing target 341 displays a graphic / character string selected as the editing target in FIG. In the first embodiment, a character string 334 is displayed on the editing target 341. The user operates the operation unit 510 and uses the software keyboard 342 to edit the editing target 341. When the enter button 343 is pressed, the contents of the edited object 341 after editing are reflected in the character string 334 of the slide data 322f selected as the editing object. Since the projector 10 directly reads and displays the image file from the USB memory 50, the image file stored in the USB memory 50 is updated. When the cancel button 344 is pressed, the editing content of the editing target 341 is discarded, and an editing item selection screen 330 on which slide data 322f before editing is displayed is displayed.

  According to the projector 10 of the first embodiment described above, when the USB memory 50 is connected, a medium-dependent function depending on predetermined image processing for displaying an image using image data stored in the USB memory 50 is executed. An operation screen 301 including operation items for displaying is displayed on the screen. Therefore, when the USB memory 50 is connected, the user operates the projector using an operation screen (dedicated operation screen) including operation items used in image processing using image data stored in the USB memory 50. it can. Therefore, the user can easily perform image processing using the image data stored in the USB memory 50, and the operability of the user can be improved.

  Further, according to the projector 10 of the first embodiment, the operation screen 301 includes operation items such as thumbnail display and editing, which are functions used only in image processing when the USB memory 50 is connected. Accordingly, since the user can select a function from functions used only for image processing using the USB memory 50, an operation of selecting a desired operation item from a large number of operation items including unnecessary functions is performed. Can be omitted.

  Further, according to the projector 10 of the first embodiment, the icon 302 indicating that the USB memory 50 is connected is displayed on the operation screen. Therefore, the user can easily confirm that the image processing is executed using the image data stored in the USB memory 50.

  Further, according to the projector 10 of the first embodiment, when the USB memory 50 is connected, editing of image data, which is a medium-dependent function, is included in the operation menu. Therefore, the user can easily edit the image data. Conventionally, the conventional technology that stores image data in a storage medium and can reproduce the image data only by a projector is characterized in that a computer is not necessary. In other words, the feature was that presentation was possible without a computer. However, the customer cannot modify the manuscript, add materials, or change the expression. As a result, a computer is required, and the features cannot be fully utilized. According to the first embodiment, this time, if there is a projector 10 without a computer, the image data in the storage medium such as the USB memory 50 can be corrected / added / reedited. (Reduction of the number of power devices (labor), etc.) can be greatly improved.

B. Second embodiment:
In the second embodiment, a projector 10a having a touch panel type liquid crystal panel constituting an operation unit will be described. The projector 10a of the second embodiment is the same as that of the first embodiment except that the operation unit 510 is configured by a liquid crystal operation panel 530 and that the control unit 168 controls the operation screen displayed on the operation panel 530. The projector 10 has the same configuration as the projector 10.

B1. Schematic configuration:
FIG. 7 is an explanatory diagram illustrating a schematic configuration of the projector 10a according to the second embodiment. The projector 10a includes an operation panel 530 as an operation unit. The operation panel 530 is configured by a touch panel type liquid crystal panel. FIG. 7A illustrates an operation panel 530 when the computer PC is connected to the projector 10a. FIG. 7B illustrates the operation panel 530 when the USB memory 50 is connected to the projector 10a. On operation panel 530, various buttons for operating projector 10a are displayed.

  The projector 10a assigns functions (displays) to the operation panel 530 so as to be an operation unit having different functions when the USB memory 50 as a portable storage medium is connected and when the computer PC is connected. Change the operation screen). The functional blocks of the projector 10a are substantially the same except that the operation panel 530 is provided instead of the operation unit 510 in the functional block of the projector 10 of the first embodiment (FIG. 2). The control unit 168 of the projector 10a controls function assignment (displayed operation screen) of the operation panel 530.

  When the computer PC is connected to the projector 10a, the operation panel 530 has buttons 531 for setting the color mode and buttons for setting the aspect ratio, as shown in FIG. 7A. A button 533 for performing keystone distortion correction processing, selection buttons 534a to 534d, and a determination button 535 are displayed.

  When the USB memory 50 is connected to the projector 10a, as shown in FIG. 7B, the operation panel 530 performs initial settings such as color mode, aspect ratio setting, and keystone distortion correction processing. Initial button 541, selection buttons 542 a to 542 d, an execution button 543 for playing back an image file (for example, executing a PowerPoint slide show), a stop button 544 for stopping playback of an image file, and a USB memory 50 An editing instruction button 545 for instructing execution of editing of stored image data is included. The content of the operation screen displayed on the operation panel 530 is not limited to that shown in FIG. 7B, and can be set in various modes in advance according to the usage mode. For example, the projector 10a may display a thumbnail screen 310 used for selecting image data stored in the USB memory 50 and selection buttons 542a to 542d for selecting image data on the operation panel 530. Further, the icon 302 may be displayed on the operation panel 530. In the second embodiment, the edit instruction button 545 corresponds to the “edit instruction section” in the claims.

  As described above, in the second embodiment, when the USB memory 50 is connected, an operation screen including an operation button to which a medium-dependent function is assigned is displayed on the operation panel 530. In the second embodiment, the thumbnail display function and editing function are examples of the medium-dependent function, and the present invention is not limited to this. For example, a function of removing the USB memory 50 may be included.

  According to the projector 10a of the second embodiment described above, the function of the operation unit displayed on the operation panel 530 is different when the USB memory 50 is connected and when the computer PC is connected. Controlled. Specifically, when the USB memory 50 is connected, an operation screen including an operation button to which a medium-dependent function is assigned is displayed on the operation panel 530. Therefore, when image processing using image data stored in the USB memory 50 is executed, an operation screen including operation buttons to which a thumbnail display function, an editing function, and the like are assigned can be provided to the user at the start of the operation. Therefore, the user operability can be improved.

  Further, according to the projector 10a of the second embodiment, the editing instruction button 545 for instructing the execution of editing the image data stored in the USB memory 50 is displayed on the operation panel 530. Therefore, even when the USB memory 50 is connected, an operation screen corresponding to the function to be used is displayed on the operation panel 530, so that the user can easily operate without hesitation. Therefore, the convenience for the user is greatly improved.

C. Third embodiment:
In the third embodiment, each button of the operation unit 510 constituted by physical buttons is respectively connected when the USB memory 50 as a portable storage medium is connected and when a computer is connected. A projector for assigning different functions will be described.

C1. Operation part:
FIG. 8 is an explanatory diagram illustrating the operation unit 510a in the third embodiment. Various buttons 400 to 407 and notification units 408a and 408b are provided on the operation unit 510a. The CPU 160 of the projector changes the function assigned to each button of the operation unit 510 when the computer is connected to the projector and when the USB memory 50 as a portable storage medium is connected to the projector. To do. In the third embodiment, the various buttons of the operation unit 510a correspond to “physical keys” in the claims. In the third embodiment, the operation unit 510a is provided with a button as a “physical key”, but is not limited to the button, and various known configurations can be applied as the “physical key”.

  For example, in the third embodiment, it is as follows. When the computer is connected to the projector, the button 400 is assigned a function for setting a color mode, the button 402 is assigned a function for setting an aspect ratio, and the button 404 has a function for executing a trapezoidal distortion correction process. Assigned. A selection button 406 including buttons 406a to 406d is assigned a function for selecting various items, and a determination button 407 is assigned a function for determining selection of an item by the selection button 406. On the other hand, when the USB memory 50 is connected to the projector, the button 400 is assigned a function for displaying a thumbnail screen, the button 402 is assigned an editing function, and the button 404 is assigned a color mode / aspect ratio / trapezoidal distortion. Functions for performing initial settings such as correction are assigned. The selection button 406 and the determination button 407 are assigned functions for performing selection and determination as in the case where the computer is connected to the projector. The notification units 408a and 408b include light sources such as LEDs.

  In the third embodiment, when a computer is connected, the buttons 400, 402, and 404 are assigned functions for performing color mode setting, aspect ratio setting, and keystone distortion correction processing. When the memory 50 is connected, the buttons 400, 402, and 404 are assigned functions for displaying a thumbnail screen, an edit screen, and an initial setting screen, respectively.

  As shown in “normal menu” / “USB menu” in FIG. 8, the functions assigned to the operation unit 510 differ depending on whether the computer or the USB memory 50 is connected. The “normal menu” is an operation unit when a computer is connected, and the “USB menu” is an operation unit when a USB memory 50 is connected. As the “normal menu”, “color mode”, “aspect ratio”, and “trapezoid correction” are described above the buttons 400, 402, and 404. By doing so, the user can easily know that different functions are assigned to the same button when the computer is connected or when the USB memory 50 is connected. Further, when the computer is connected to the projector, the projector controls to turn on the notification unit 408a, and when the USB memory 50 is connected to the projector, the projector turns on the notification unit 408b. In this way, the user can immediately recognize whether the image data is currently acquired and displayed from either the computer or the USB memory 50.

  FIG. 9 is an explanatory diagram illustrating a function assignment table in the third embodiment. The table 500 shows the correspondence between each button of the operation unit 510 and the function assigned to each button. The table 500 is stored in advance in a memory (not shown) of the projector. In the table 500, “button number” represents each button of the operation unit 510, and “function” represents a function assigned to each button according to an external device (computer, USB memory 50) connected to the projector. ing. “PC” represents a computer, and “USB memory” represents the USB memory 50. Based on the function assignment table 500, the projector control unit 168 has different functions for the various buttons 400, 402, and 404 of the operation unit 510 when the USB memory 50 is connected and when a computer is connected. Is assigned. For example, an aspect ratio setting function is assigned to the button 402 when a computer is connected to the projector 10, and an editing function is assigned when the USB memory 50 is connected.

  According to the projector of the third embodiment described above, the functions assigned to the buttons provided on the operation unit 510 when the USB memory 50 is connected and when the computer is connected. Can change. Therefore, it is possible to provide an operation unit that allows the user to easily execute the medium-dependent function without newly preparing an operation button for image processing using the USB memory 50. Moreover, since it is not necessary to use expensive parts, the cost of the product can be greatly reduced. In addition, since the user can understand the function of the button at a glance, the usability is improved.

D. Variation:
(1) In the first embodiment, in editing an image file, a character string is edited using a software keyboard. However, for example, editing may be performed using a numeric keypad or a keyboard of a mobile phone or a computer.

  FIG. 10 is an explanatory diagram illustrating a projection system in a modification. The projection system according to the modification includes a projector 10b and a mobile phone 12. The projector 10b and the mobile phone 12 include a wireless communication unit 35 and are connected so as to be communicable by wireless communication such as infrared communication. An application for communicating with the projector 10b is incorporated in the mobile phone 12 in advance. In the projector 10b, the selection of the character string to be edited is performed in the same manner as in the first embodiment. The user inputs a character string with the mobile phone 12 and transmits it to the projector 10b. The projector 10b replaces the character string acquired from the mobile phone 12 with the selected character string 334. Instead of the cellular phone 12, a personal digital assistant (PDA), a laptop computer, or the like may be used.

  In this way, the image file can be edited without incorporating the function of the software keyboard into the projector. Therefore, the load on the projector 10b can be reduced. In addition, when using a projector that directly acquires and displays image data from the USB memory 50, the user can easily edit an image file using a mobile terminal such as the mobile phone 12 without using a computer. Therefore, user convenience can be improved. In particular, since the user is familiar with how to use a favorite portable terminal, the user can edit the file without hesitation. Therefore, the usability of the projector 10b is greatly improved for the user.

(2) In the third embodiment, the notification units 408a and 408b are provided so that it can be easily recognized whether the image data is acquired and displayed from either the computer or the USB memory 50. The function assigned to the operation unit may be switched when the user presses the button when the USB memory 50 is used. In this way, the user can arbitrarily switch the function assigned to the operation button.

(3) An image display device for displaying an image on a display unit, wherein a first connection means for connecting a portable storage medium storing image data and an image supply device for outputting a video signal are connected. The second connection means for inputting the video signal output from the image supply device, the image data stored in the portable storage medium or the video signal input from the image supply device, Image display means for displaying an image on a display unit, and operation screen display means for displaying an operation screen for operating the image display device, wherein the portable storage medium is connected to the first connection means. And an operation screen display means for displaying different operation screens in the case where the image supply apparatus is connected to the second connection means.

  According to the image display device of the modification (3), different operation screens are displayed on the first display unit when the portable storage medium is connected and when the image supply device is connected. Therefore, when the portable storage medium is connected, the trouble of calling up an operation screen for performing image processing using the image data stored in the portable storage medium can be omitted, so that the operability for the user can be improved.

  As mentioned above, although the various Example of this invention was described, this invention is not limited to these Examples, A various structure can be taken in the range which does not deviate from the meaning.

    DESCRIPTION OF SYMBOLS 10 ... Projector, 10a ... Projector, 10b ... Projector, 12 ... Mobile phone, 30 ... USB interface, 31 ... PC interface, 100 ... Illumination optical system, 110 ... Light source lamp drive part, 120 ... Liquid crystal light valve, 130 ... Liquid crystal light Valve driving unit 140 ... projection optical system, 150 ... projection optical system adjustment unit, 160 ... CPU, 162 ... image acquisition unit, 164 ... image processing unit, 166 ... editing unit, 168 ... control unit, 300, 301 ... operation screen , 302 ... icon, 304 ... operation menu, 306 ... icon, 310 ... operation screen, 311 ... image file, 318 ... button, 319 ... button, 320 ... edit screen, 322a to 322f ... slide data, 323 ... button, 330 ... Edit execution screen, 330 ... edit item selection screen, 331 ... figure, 332 334 ... Character string, 340 ... Editing execution screen, 341 ... Editing target, 342 ... Software keyboard, 343 ... Decision button, 344 ... Cancel button, 400, 402, 404 ... button, 406 ... Selection button, 408 ... Decision button, 420 ... image processing unit, 500 ... table, 510 ... operation unit, 530 ... operation panel, 531, 532, 533 ... button, 534a ... selection button, 535 ... decision button, 541 ... initial setting button, 542 ... selection button, 543 ... Execute button, 544 ... Stop button

Claims (3)

An image display device that displays an image on a first display unit,
First connection means for connecting a portable storage medium storing image data;
A second connecting means for connecting an image supply device for outputting a video signal and inputting the video signal output from the image supply device;
Image display means for displaying an image on the first display unit based on image data stored in the portable storage medium or a video signal input from the image supply device;
An operation unit for operating the image display device;
The function assigned to the operation unit is different between the case where the portable storage medium is connected to the first connection means and the case where the image supply device is connected to the second connection means. Control means to control,
Editing means capable of editing the image data,
When the portable storage medium is connected to the first connection unit, the control unit edits a graphic or character string included in the image data by the editing unit as a function substituted for the operation unit. An image display device that controls a function to be executed so as to be substituted for the operation unit . The image display device according to claim 1, further comprising:
A second display;
And an operation screen display means for displaying an operation screen constituting the operation unit to the second display unit,
The control means displays an image on the first display unit using image data stored in the portable storage medium when the portable storage medium is connected to the first connection means. for controlling the operation screen display means to display an operation screen depending on the predetermined image processing on the second display portion, an image display device. The image display device according to claim 1 ,
The operation unit includes a physical key to which a function for operating the image display device is assigned.
The control means assigns the key to the key when the portable storage medium is connected to the first connection means and when the image supply device is connected to the second connection means. Change the image display device.

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