JP2008096878A - Image display device, image display method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display device, an image display method, and a program that can improve the convenience when projecting an image suited to desired image data among a plurality of image data stored in a plurality of storage media. <P>SOLUTION: When a device is connected to a card slot 31 or a USB terminal 32, a control unit 20 operates differently according to the connected device. For example, when a multi-card reader MR with a plurality of memory cards M1 to M4 mounted thereon is connected to the USB terminal 32, the control unit 20 displays a drive selector (selection image) on a projection screen. The drive selector includes a plurality of icons corresponding to respective drives (memory cards M1 to M4) and when a user selects a desired icon out of those icons, the control unit 20 displays a list of image data stored in the corresponding memory card to prompt the user to select image data to be displayed fully on the screen from the list. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image display device, an image display method, and a program.

There is known a projector (image display device) capable of reading image data stored in an external storage medium such as a memory card or a USB (Universal Serial Bus) memory and projecting an image corresponding to the image data (for example, , See Patent Document 1).
When such a projector is mounted (connected), a list of image data stored in the storage medium is displayed as a projection image, and the user selects image data to be projected. ing.

JP 2005-165107 A

  However, even if this type of conventional projector has a plurality of connection terminals (USB terminal, various card slots, etc.) for connecting a storage medium, the image data in the storage medium connected first The list of was to be displayed. Therefore, when projecting an image according to desired image data from a plurality of image data stored in a plurality of storage media, a storage medium storing the desired image data is connected each time. Therefore, it is necessary to perform the operation to be performed or to copy the image data to one storage medium in advance, and the convenience is impaired.

  The present invention has been made in view of the above problems, and its purpose is to provide convenience in displaying an image according to desired image data from among a plurality of image data stored in a plurality of storage media. An object is to provide an image display apparatus, an image display method, and a program that can be improved.

  An image display device of the present invention includes a plurality of connection terminals to which a storage medium storing image data can be connected, a display unit that displays an image based on the image data, and the storage medium for the plurality of connection terminals. A selection unit for causing the display unit to display a selection image for allowing the user to select a selection image from among the storage media connected to the connection terminal while viewing the connection status, and the storage selected by the selection image And a control unit that reads out image data stored in the medium and causes the display unit to display an image based on the image data.

  According to this image display device, when the selection unit displays the selected image, the user can visually recognize the connection status of the storage medium, and the image data to be projected is stored from the connected storage medium. Storage medium can be selected. As a result, even when a plurality of storage media are connected, it is possible to easily display an image based on the image data stored in the desired storage medium, which improves convenience. .

  In this image display device, the selection image includes a plurality of icons respectively corresponding to the plurality of connection terminals, and the selection unit is connected to the case where the storage medium is connected to the connection terminals. It is desirable to change the display mode of the icon depending on whether it is not performed.

  According to this image display device, the selected image includes a plurality of icons respectively corresponding to the plurality of connection terminals, and the selection unit is not connected to the case where the storage medium is connected to the connection terminals. Since the display mode of the icon is changed depending on the case, the connection status of the storage medium can be easily recognized.

  In this image display device, it is preferable that the selection unit causes the storage medium to be selected by the icon.

  According to this image display device, both the visual recognition of the connection status and the selection of the storage medium can be performed by the icon, so that the number of elements to be included in the selected image can be reduced. As a result, the selected image can be simplified, and the visibility of the selected image is improved.

  In this image display device, at least one of the plurality of connection terminals can be connected to a storage medium reading device having a plurality of connection terminals to which a storage medium can be connected, and the selected image includes the storage medium reading device. It is desirable that a plurality of icons respectively corresponding to the plurality of connection terminals included in the apparatus are included.

  According to this image display device, since the selected image includes a plurality of icons respectively corresponding to the plurality of connection terminals provided in the storage medium reading device, the connection status of the storage medium to the storage medium reading device can be easily visually confirmed. It becomes possible to do.

  In this image display device, the control unit causes the display unit to display a list of image data stored in the storage medium selected by the selected image, and selects image data to be displayed from the list. It is desirable to make it.

  According to this image display device, even when a plurality of image data is stored in the selected storage medium, it is possible to easily specify (select) the image data to be displayed.

  The image display method of the present invention is an image display device having a plurality of connection terminals to which a storage medium can be connected, and is an image display method for displaying an image based on image data stored in the storage medium, A first step of visually displaying a connection status of the storage medium with respect to the plurality of connection terminals and displaying a selection image for selecting any one of the storage media connected to the connection terminals; A second step of reading out image data stored in the storage medium selected by the image and displaying an image based on the image data.

  According to this image display method, by displaying the selected image in the first step, the user can visually recognize the connection status of the storage medium, and image data to be projected is stored in the connected storage medium. A stored storage medium can be selected. As a result, even when a plurality of storage media are connected, it is possible to easily display an image based on the image data stored in the desired storage medium, which improves convenience. .

  A program according to the present invention is a program for displaying an image based on image data stored in the storage medium in an image display device having a plurality of connection terminals to which a storage medium can be connected. A first step of causing the connection status of the storage medium to a plurality of connection terminals to be visually recognized, and displaying a selection image for selecting any one of the storage media connected to the connection terminal; and the selection image And reading the image data stored in the storage medium selected in step (2), and executing the second step of displaying an image based on the image data.

  According to this program, by displaying the selected image in the first step, the user can visually recognize the connection status of the storage medium, and the image data to be projected is stored from the connected storage medium. Storage medium can be selected. As a result, even when a plurality of storage media are connected, it is possible to easily display an image based on the image data stored in the desired storage medium, which improves convenience. .

  The present invention can also be configured in the form of a recording medium in which the program is recorded so as to be readable by a computer. As recording media, flexible disks, CD-ROMs, magneto-optical disks, IC cards, ROM cartridges, punch cards, printed matter on which codes such as barcodes are printed, projector internal storage devices (memory such as RAM and ROM), Various media that can be read by the computer, such as an external storage device, can be used.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The image display apparatus according to the present embodiment is a projector that displays an image based on image data by modulating and projecting light emitted from a light source based on image data stored in a storage medium.

FIG. 1 is a block diagram illustrating a schematic configuration of a projector according to the present embodiment.
As shown in FIG. 1, the projector 1 includes an image projection unit 10 as a display unit, a control unit 20, a storage unit 21, an operation unit 22, an operation signal reception unit 23, a network interface (I / F) unit 24, a memory card. An interface (I / F) unit 25, a USB interface (I / F) unit 26, an image data processing unit 27, a light valve driving unit 28, a card slot 31, a USB terminal 32, a remote controller RC, etc. The unit 10 includes a light source unit 11, three liquid crystal light valves 12R, 12G, and 12B, a projection lens 13 as a projection optical system, and the like.

  The light source unit 11 includes a discharge lamp 11a such as a high-pressure mercury lamp or a metal halide lamp, and a reflector 11b that reflects light emitted from the discharge lamp 11a toward the liquid crystal light bulbs 12R, 12G, and 12B. Light emitted from the light source unit 11 is converted into light having a substantially uniform luminance distribution by an integrator optical system (not shown), and red (R), green (G), which are the three primary colors of light, by a color separation optical system (not shown), After being separated into blue (B) color light components, they are incident on the liquid crystal light valves 12R, 12G, and 12B, respectively.

The liquid crystal light valves 12R, 12G, and 12B are configured by a liquid crystal panel or the like in which liquid crystal is sealed between a pair of transparent substrates, and a driving voltage is applied to the inner surface of each transparent substrate for each minute region (pixel) with respect to the liquid crystal. Transparent electrodes (pixel electrodes) that can be applied are formed in a matrix.
When the light valve driving unit 28 applies a driving voltage corresponding to the input image data to each pixel, each pixel is set to a light transmittance corresponding to the image data. That is, the light emitted from the light source unit 11 is modulated by transmitting through the liquid crystal light valves 12R, 12G, and 12B, and image light corresponding to image data 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 screen SC or the like by the projection lens 13.

  The control unit 20 includes a CPU (Central Processing Unit), a RAM (Random Access Memory) used for temporary storage of various data, and the like, and functions as a computer. The control unit 20 performs overall control of the operations of the units 21 to 27 connected via the bus 29 by operating according to a control program stored in the storage unit 21.

  The storage unit 21 includes a non-volatile memory such as a mask ROM (Read Only Memory), a flash memory, or an FeRAM (Ferroelectric RAM). The storage unit 21 stores various control programs and various data for controlling the operation of the projector 1. The control program stored in the storage unit 21 includes an OS (Operating System), an application program that operates on the OS, and the like. The data stored in the storage unit 21 includes, in addition to data representing setting values, a portal screen for displaying the connection status of the external interface, a message screen for displaying a message to the user, and an environment for the user. Various image data representing a menu screen or the like displayed when setting or the like is performed is included.

  The operation unit 22 and the remote controller RC are provided with a plurality of operation buttons for giving various instructions to the projector 1. The operation buttons provided on the operation unit 22 and the remote controller RC include a “power button” for turning the power on and off, and a “cursor button” for selecting an item by moving the cursor on the portal screen or the menu screen. In addition, there is a “decision button” for deciding an item selected on the portal screen or the menu screen. When the user operates various operation buttons of the operation unit 22, the operation unit 22 outputs an operation signal corresponding to the operation content of the user to the control unit 20. When the user operates various operation buttons of the remote controller RC, the remote controller RC generates an infrared operation signal corresponding to the user's operation content, and the operation signal receiving unit 23 receives this and transmits it to the control unit 20.

  The network interface unit 24 is a communication unit that performs network communication. In this embodiment, the network interface unit 24 can perform wireless communication using a wireless local area network (LAN). Based on an instruction from the control unit 20, the network interface unit 24 transmits / receives commands related to wireless LAN connection to / from the image supply device 100 such as a personal computer, and receives image data from the image supply device 100. can do. Note that, as a wireless LAN connection form, both an infrastructure mode in which communication is performed via an access point (not shown) and an ad hoc mode in which communication is performed without an access point can be used. When the network interface unit 24 receives image data from the image supply device 100, the image data is output to the image data processing unit 27 under the control of the control unit 20.

  The memory card interface unit 25 and the USB interface unit 26 perform data input / output with an external storage medium (storage device), and can read image data and the like stored in the storage medium. The memory card interface unit 25 is provided with one card slot 31 to which a memory card M0 as a storage medium can be connected as an internal drive, and the card slot 31 of this embodiment can be connected to a compact flash (registered trademark). It has become. On the other hand, the USB interface unit 26 includes one USB / Type A terminal 32 (hereinafter simply referred to as a USB terminal 32) to which a USB connection type device can be connected. Examples of devices that can be connected to the USB terminal 32 include a multi-card reader MR as a storage medium reader capable of mounting a plurality of types of memory cards in addition to a USB connection type storage medium such as a USB memory MU. . The card slot 31 and the USB terminal 32 correspond to the connection terminal of the present invention.

FIG. 2 is a block diagram showing a schematic configuration of a multi-card reader MR that can be connected to the USB terminal 32.
As shown in FIG. 2, the multi-card reader MR includes a control unit 40, a USB interface (I / F) unit 41, and an input / output interface (I / F) unit 42. The control unit 40 includes a CPU, a ROM, a RAM, and the like, and operates according to a control program stored in the ROM so that the USB interface unit 41 and the input / output interface unit 42 connected via the bus 44. To control.

  A USB / Type B terminal 43 (hereinafter simply referred to as a USB terminal 43) is connected to the USB interface unit 41. The USB terminal 43 is connected to a host device such as a personal computer via a USB cable (not shown). In this embodiment, the USB terminal 43 is connected to the USB terminal 32 of the projector 1. The USB interface unit 41 controls data communication with the host device (projector 1) based on the USB standard.

The input / output interface unit 42 includes a card slot 51 to which a compact flash (registered trademark) type memory card M1 can be connected, a card slot 52 to which an SD memory card type memory card M2 can be connected, and a memory stick (registered trademark) type. Four card slots are connected: a card slot 53 to which a memory card M3 can be connected, and a card slot 54 to which a SmartMedia (registered trademark) or xD-Picture Card (registered trademark) type memory card M4 can be connected. The input / output interface unit 42 controls input / output of data to / from the memory cards M1 to M4 connected to the card slots 51 to 54.
Each of the card slots 51 to 54 is provided with connection detection means (not shown) so that whether or not the memory cards M1 to M4 are connected (attached) can be detected for each slot. The detection result by the connection detecting means is transmitted to the control unit 40.

  When the multi-card reader MR is connected to the USB terminal 32 of the projector 1, the projector 1 recognizes these four card slots 51 to 54 as four drives and can read image data from each memory card.

  Returning to FIG. 1, the image data processing unit 27 controls the control unit 20 to read an image read from a storage medium such as the memory card M0 or the USB memory MU connected to the card slot 31 or the USB terminal 32. Data, image data transmitted from the image supply apparatus 100, or image data stored in the storage unit 21 is input. The image data processing unit 27 performs various data processing on the input image data, and converts the image data into image data for defining drive voltages applied to the respective pixels of the liquid crystal light valves 12R, 12G, and 12B. The image data processing unit 27 outputs the converted image data to the light valve driving unit 28.

  The light valve driving unit 28 drives the three liquid crystal light valves 12R, 12G, and 12B based on the image data input from the image data processing unit 27. As a result, an image (image light) corresponding to the image data is projected from the image projection unit 10.

Next, the operation of the projector 1 according to this embodiment will be described.
When commercial power is supplied to the projector 1, the control unit 20 starts an operation according to the control program, performs a predetermined initialization operation, and then operates (presses) the power button of the operation unit 22. Wait. When the power button is operated, the control unit 20 performs processing for enabling the image projection unit 10 to project an image, and then instructs the image data processing unit 27 to send a portal from the image projection unit 10. Project the screen.

FIG. 3 is an explanatory diagram showing a portal screen.
As shown in FIG. 3, the portal screen Gp is a screen that displays the connection status of each interface unit (network interface unit 24, memory card interface unit 25, USB interface unit 26), information necessary for connection, or the like. The portal screen Gp includes a network display area An that indicates information related to the network, and a storage display area As that indicates the connection status of the storage interface, that is, the memory card interface unit 25 and the USB interface unit 26. Note that when neither the memory card interface unit 25 nor the USB interface unit 26 is connected to a storage medium (device), nothing is displayed in the storage display area As as shown in FIG.

  While operating according to the control program, the control unit 20 regularly monitors the connection status of the card slot 31 and the USB terminal 32, and devices such as the memory card M0, the USB memory MU, or the multi-card reader MR are connected. When connected, the connection is detected by a response signal from the device. When a response signal is input from the device connected to the USB terminal 32, the control unit 20 issues a command for inquiring the number of drives and the type of each drive to the device. Thereafter, when response signals to these commands are input, a drive number for identifying the drive is assigned to each drive.

  The projector 1 according to the present embodiment can assign five numbers 0 to 4 as drive numbers, and among these, the drive number 0 is assigned in advance to the card slot 31 that is a built-in drive of the projector 1. For this reason, a maximum of four drive numbers (1 to 4) can be assigned to a device connected to the USB terminal 32. Even when the device includes five or more drives (such as a card slot), The fifth and subsequent drives cannot be accessed (data input / output).

  When the multi-card reader MR is connected to the USB terminal 32, the control unit 20 assigns a drive number to each card slot 51 to 54 and then connects the card slots 51 to 54 ( Whether or not the memory cards M1 to M4 are connected) is periodically monitored, and the connection status can be recognized by a response from the control unit 40 of the multi-card reader MR.

  When a device is connected to the card slot 31 or the USB terminal 32 while the portal screen Gp is displayed, the control unit 20 performs different operations depending on the connected device. For example, when the memory card M0 is connected to the card slot 31, or when the multi-card reader MR with a plurality of memory cards attached is connected to the USB terminal 32, the control unit 20 displays the portal screen Gp. The drive selector is superimposed on the storage display area As.

4 (a) to 4 (c) and FIGS. 5 (a) to 5 (c) are explanatory views showing a drive selector.
As shown in FIGS. 4A to 4C and FIGS. 5A to 5C, the drive selector DS indicates the connection status of the connected drive, and indicates any one drive to the user. This is an image for selection and corresponds to the selection image of the present invention. The control unit 20 for displaying the drive selector DS corresponds to the selection unit of the present invention.

  The drive selector DS is composed of a title display portion DT labeled “Select drive” and an icon display portion DI including five icons (button-like images) I0 to I4. Five icons I0 to I4 included in the icon display portion DI represent drives corresponding to five drive numbers (0 to 4), respectively, and a drive number is added to each icon. The illustrations included in the icons differ depending on the drive, and a memory card is drawn on the icon I0 representing the card slot 31 (drive number 0), and four drives (drive number 1) that can be connected to the USB terminal 32 are displayed. USB memory is drawn on the icons I1 to I4 representing ˜4). That is, the user can easily identify the drive by the illustration and the drive number included in the icon.

The control unit 20 switches the display mode of the icons I0 to I4 according to the connection status of the drive in order to make the user recognize the connection status of each drive. Specifically, for a drive icon that can be accessed when a storage medium such as a memory card is connected, an illustration is displayed in a bright color so that the illustration is conspicuous (enabled state), and the storage medium is connected For the drive icon that is not accessible and cannot be accessed, the illustration is displayed in a dark color so that the illustration does not stand out (disabled state).
Image data representing the drive selector DS is stored in the storage unit 21 together with image data representing the icon, and the control unit 20 instructs the image data processing unit 27 to display the drive selector DS corresponding to the connection status. Let

For example, when the memory card M0 is connected to the card slot 31 while the portal screen Gp (see FIG. 3) is displayed, the control unit 20 detects this and as shown in FIG. The drive selector DS is displayed in the storage display area As. In this state, only the icon I0 representing the card slot 31 is enabled.
Even when the memory card M0 is connected to the card slot 31 and a multi-card reader MR without a single memory card is connected to the USB terminal 32, the control unit 20 does not operate as shown in FIG. Only the drive selector DS that is the same as that shown in FIG. 1, ie, the icon I0 representing the card slot 31, displays the enabled drive selector DS.

  When the memory card M0 is connected to the card slot 31 and the multi-card reader MR with a plurality of memory cards attached is connected to the USB terminal 32, the control unit 20 performs the processing shown in FIG. As shown in (c), the icon I0 representing the card slot 31 is enabled, and only the icon with the memory card mounted among the four icons I1 to I4 representing the drive connected to the USB terminal 32 is shown. Is enabled. For example, when two memory cards are attached to the multi-card reader MR, two icons (in this example, icons I2 and I4) are enabled as shown in FIG. When four memory cards are attached to the reader MR, the four icons I1 to I4 are enabled as shown in FIG.

  When the multi-card reader MR with a plurality of memory cards attached is connected to the USB terminal 32 without the memory card M0 being connected to the card slot 31, the control unit 20 performs the operation shown in FIG. As shown in (a) and (b), of the four icons I1 to I4 representing the drive connected to the USB terminal 32, only the icon with the memory card is enabled.

  The operation when a device having only one drive such as a USB memory MU or a multi-card reader MR with one memory card attached is connected to the USB terminal 32 will be described later. Further, when the multi-card reader MR without the memory card M0 being connected to the card slot 31 and having no memory card attached thereto is connected to the USB terminal 32, the control unit 20 As shown in FIG. 5C, the drive selector DS in which all the icons I0 to I4 are disabled is displayed to notify the user that there is no accessible drive.

  As shown in FIGS. 4A to 4C and FIGS. 5A and 5B, the icon display unit DI is either an enabled icon, that is, an icon indicating a drive to which a storage medium is connected. A frame-like cursor C surrounding one is displayed. The cursor C is for designating any one of the drives in which the storage medium is mounted. As shown in FIGS. 4B and 4C and FIGS. 5A and 5B, the cursor C is stored. When there are a plurality of drives loaded with a medium, the user can move the position of the cursor C by operating the cursor key of the operation unit 22 and designate (select) another drive.

  When the user operates the determination key of the operation unit 22 in a state where any one drive is selected on the drive selector DS, the control unit 20 displays the image data (file) stored in the storage medium of the selected drive. ) List. Specifically, the control unit 20 reads out each image data and instructs the image data processing unit 27 to generate reduced image data for reducing and displaying an image represented by each image data. Further, the control unit 20 displays image data representing the list display screen on the image data processing unit 27 in order to display a list display screen in which reduced images (thumbnail images) represented by the reduced image data are arranged in a predetermined layout. And a list display screen is projected from the image projection unit 10.

FIG. 6 is an explanatory diagram showing a list display screen, and FIG. 7 is an explanatory diagram showing a state where an image selected on the list display screen is displayed on the entire screen.
As shown in FIG. 6, the list display screen Gs includes a title display section S1 that displays the title “data list”, a menu display section S2 that displays various operation menus, and a list display section S3 in which thumbnails Sn are arranged. , And a guide display section S4 for guiding the operation method.
The thumbnails Sn arranged in the list display section S3 can be selected by a frame-like cursor C. When the user operates the cursor key of the operation unit 22 and selects any one thumbnail Sn (image data) and then operates the enter key, the control unit 20 instructs the image data processing unit 27 to As shown in FIG. 7, an image based on the selected image data is displayed (entire display) on substantially the entire surface of the projection screen Ga. In addition, when the user operates the determination key of the operation unit 22 in a state where the selected image is displayed on the entire surface, the control unit 20 returns to the state where the list display screen Gs is displayed.

  Returning to FIG. 6, the menu display section S2 of the list display screen Gs has a “slide show” for switching images to be displayed on the entire screen at predetermined time intervals, and “previous page” for switching pages when thumbnails Sn cover a plurality of pages. Items “End” for ending the display of “page”, “next page”, and list display screen Gs are arranged. When the user operates the cursor key of the operation unit 22 to select any item and then operates the determination key, the control unit 20 performs an operation according to the selected item. Here, when “end” is selected, the control unit 20 returns to the state of displaying the portal screen Gp including the drive selector DS, and waits for the user to select a drive. In this state, when all devices connected to the card slot 31 and the USB terminal 32 are removed, the control unit 20 ends the display of the drive selector DS and displays the portal screen Gp that does not include the drive selector DS. (See FIG. 3).

Next, an operation when a device having only one drive or a multi-card reader MR with one memory card attached is connected to the USB terminal 32 will be described.
A state in which no device is connected to the USB terminal 32, that is, a state in which the memory card M0 is not connected to the card slot 31 and the portal screen Gp that does not include the drive selector DS is displayed (see FIG. 3), or a card With the memory card M0 connected to the slot 31 and the drive selector DS (see FIG. 4A) displayed, a device having only one drive, such as a USB memory MU, or one memory card is inserted. When the multi-card reader MR in this state is connected to the USB terminal 32, the control unit 20 displays a list display screen Gs of newly connected drives. That is, in this case, the user can select image data for full-screen display without selecting a drive.

  It should be noted that even when a multi-card reader MR without a single memory card is connected to the USB terminal 32 and a memory card is installed in any of the card slots 51 to 54, the control unit 20 displays a list display screen Gs of the mounted storage media (drives).

  Thereafter, when the user ends the display of the list display screen Gs, the control unit 20 has a memory card mounted among the four drives that can be assigned to the USB terminal 32 as shown in FIG. A drive selector DS in which only one drive icon is enabled is superimposed on the portal screen Gp. When the memory card M0 is connected to the card slot 31, the icon I0 representing the card slot 31 is also enabled as shown in FIG. 8B.

  If a device is connected to the card slot 31 or the USB terminal 32 before power is supplied to the projector 1, the control unit 20 displays the portal screen Gp that does not include the drive selector DS (see FIG. 3). Instead of displaying, the operation according to the connection status is performed. That is, when the memory card M0 is connected to the card slot 31, or when the multi-card reader MR having 0 or 2 or more memory cards is connected to the USB terminal 32, the drive selector DS is set. When a portal screen Gp is displayed and a device (USB memory MU or the like) having only one drive or a multi-card reader MR with one memory card attached is connected to the USB terminal 32, a list is displayed. The display screen Gs is displayed.

As described above, according to the projector 1 of the present embodiment, the following effects can be obtained.
(1) According to the projector 1 of the present embodiment, the control unit 20 displays the drive selector DS, so that the user can visually check the connection status of the storage medium, and the user can select from among the connected storage media. It is possible to select a storage medium in which image data to be copied is stored. As a result, an image based on image data stored in a desired storage medium among a plurality of storage media can be easily displayed, and convenience is improved.

  (2) According to the projector 1 of the present embodiment, the control unit 20 displays a list of image data stored in the storage medium selected by the drive selector DS as a list display screen Gs, and this list display screen Since the image to be displayed on the entire surface is selected by Gs, it is possible to easily designate (select) the image data to be displayed on the entire surface from the plurality of image data stored in the storage medium.

  (3) According to the projector 1 of the present embodiment, the drive selector DS includes the icons I0 to I4 representing storage media that can be connected to the connection terminals (the card slot 31 and the USB terminal 32). However, since the display modes (brightness) of the icons I0 to I4 are changed depending on whether the storage medium is connected to the connection terminal or not, the connection status of the storage medium can be easily visually confirmed. Is possible.

  (4) According to the projector 1 of this embodiment, the icons I0 to I4 enable both the visual recognition of the connection status and the selection of the drive, so that the number of elements to be included in the drive selector DS can be reduced. Become. As a result, the drive selector DS can be simplified, and the visibility of the drive selector DS is improved.

  (5) According to the projector 1 of the present embodiment, when a multi-card reader MR having a plurality of drives is connected to the USB terminal 32, a plurality of icons I1 to I1 corresponding to the respective drives of the multi-card reader MR. Since I4 is displayed on the drive selector DS, it is possible to easily check the connection status of each drive of the multi-card reader MR and select each drive.

(Modification)
In addition, you may change embodiment of this invention as follows.
In the embodiment, when the memory card M0 is connected to the card slot 31 with the portal screen (FIG. 3) displayed, the control unit 20 displays the drive selector DS. Similar to the MU or the like, the list display screen Gs may be displayed. When the memory card M0 including the file for instructing automatic start (Auto Run file) is connected to the card slot 31, the list display screen Gs is displayed, and the memory card M0 not including the Auto Run file is displayed. When is connected, the drive selector DS may be displayed.

  The reason why the list display screen Gs is not displayed when the memory card M0 is connected to the card slot 31 is as follows. The memory card M0 connected to the card slot 31 (internal drive) can be handled as internal storage, and can be accessed from the outside as a network drive, for example. In other words, with respect to the memory card M0 connected to the card slot 31, the image data to be displayed is stored in advance by a PC or the like and connected to the projector 1 when necessary, other than the usage form similar to the USB memory MU or the like. This is because various usage forms are assumed, such as being always connected to the card slot 31.

  In the embodiment, among the devices that can be connected to the USB terminal 32, those having only one drive include a USB-connected hard disk drive, a storage medium (memory card, etc.) in addition to the USB memory MU described above. ) Can be used. In addition to the multi-card reader MR described above, a digital camera capable of mounting a plurality of storage media, a USB connection type hard disk divided into a plurality of partitions, and the like can be used as a device including a plurality of drives. is there.

  Instead of the USB terminal 32 in the embodiment, a terminal based on a standard other than the USB standard such as IEEE1394 may be provided.

  In the embodiment, the card slot 31 to which the CompactFlash (registered trademark) type memory card M0 can be connected is provided as an internal drive. However, the internal drive is not limited to this, and is a card slot based on another standard. Alternatively, a non-removable hard disk drive or the like may be provided as a built-in drive.

  In the embodiment, a maximum of four drive numbers (1 to 4) can be assigned to a device connected to the USB terminal 32, and four drives assigned drive numbers are assigned to the drive selector DS. However, the number of drive numbers that can be assigned and the number of icons to be displayed are not limited to four, and may be three or less or five or more.

  In the above embodiment, in order to change the display mode of the icon according to the connection status of the storage medium to the card slot 31 and the USB terminal 32, the brightness of the illustrations included in the icons I0 to I4 is changed. Accordingly, the illustration itself (illustration shape) may be changed, or words representing the connection status may be included in the icons I0 to I4.

  In the above-described embodiment, the transmissive liquid crystal light valves 12R, 12G, and 12B are used as the light modulator. However, it is also possible to use a reflective light modulator such as a reflective liquid crystal light valve. In addition, it is possible to use a micromirror array device that modulates the light emitted from the light source by controlling the emission direction of the incident light for each micromirror as a pixel.

  In the embodiment, a discharge-type light source lamp is used as the light source unit 11, but a solid light source such as an LED (Light Emitting Diode) light source or other light sources may be used.

  In the embodiment, the projector 1 is described as an example of the image display device. However, a rear projector integrally provided with a transmissive screen, a CRT (cathode ray tube) display, a liquid crystal display, a plasma display, It can also be applied to SED (Surface-conduction Electron-emitter Display), organic EL (Electro Luminescence) displays, and the like.

FIG. 2 is a block diagram showing a schematic configuration of a projector. The block diagram which shows schematic structure of a multi-card reader. It is explanatory drawing which shows a portal screen. (A)-(c) is explanatory drawing which shows a drive selector. (A)-(c) is explanatory drawing which shows a drive selector. Explanatory drawing which shows a list display screen. Explanatory drawing which shows a mode that the image selected on the list display screen is displayed on the whole surface. (A), (b) is explanatory drawing which shows a drive selector.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Projector, 10 ... Image projection part, 11 ... Light source part, 12R, 12G, 12B ... Liquid crystal light valve, 13 ... Projection lens, 20 ... Control part, 21 ... Memory | storage part, 22 ... Operation part, 23 ... Operation signal reception , 24 ... Network interface unit, 25 ... Memory card interface unit, 26 ... USB interface unit, 27 ... Image data processing unit, 28 ... Light valve drive unit, 29 ... Bus, 31 ... Card slot, 32 ... USB terminal, 100 Image supply device, M0 to M4, memory card, MR, multi-card reader, MU, USB memory, RC, remote control, SC, screen, Gp, portal screen, DS, drive selector, I0 to I4, icon, C, cursor , Gs ... List display screen.

Claims (7)

A plurality of connection terminals to which a storage medium storing image data can be connected;
A display unit for displaying an image based on the image data;
A selection unit for causing the display unit to display a selection image for allowing the storage medium connected to the plurality of connection terminals to be visually recognized and selecting any of the storage media connected to the connection terminals; ,
A control unit that reads out image data stored in the storage medium selected by the selected image and causes the display unit to display an image based on the image data;
An image display device comprising: The image display device according to claim 1,
The selection image includes a plurality of icons respectively corresponding to the plurality of connection terminals, and the selection unit includes a case where the storage medium is connected to the connection terminal and a case where the connection medium is not connected. An image display device that changes a display mode of the icon. The image display device according to claim 2,
The image display device, wherein the selection unit causes the storage medium to be selected by the icon. The image display device according to claim 2 or 3,
At least one of the plurality of connection terminals is connectable to a storage medium reading device including a plurality of connection terminals to which a storage medium can be connected, and the selected image includes the plurality of the plurality of connection terminals included in the storage medium reading device. An image display device comprising a plurality of icons respectively corresponding to connection terminals. The image display device according to any one of claims 1 to 4,
The control unit causes the display unit to display a list of image data stored in the storage medium selected by the selected image, and selects image data to be displayed from the list. Image display device. An image display method including a plurality of connection terminals to which a storage medium can be connected, and an image display method for displaying an image based on image data stored in the storage medium,
A first step of displaying a selection image for causing the storage medium connected to the plurality of connection terminals to be visually recognized and selecting one of the storage mediums connected to the connection terminal;
A second step of reading out image data stored in the storage medium selected by the selected image and displaying an image based on the image data;
An image display method comprising: A program for displaying an image based on image data stored in the storage medium in an image display device having a plurality of connection terminals to which a storage medium can be connected,
On the computer,
A first step of causing a connection status of the storage medium to the plurality of connection terminals to be visually recognized, and displaying a selection image for selecting one of the storage media connected to the connection terminal;
A second step of reading out image data stored in the storage medium selected by the selected image and displaying an image based on the image data;
A program characterized in that is executed.

Images