JP5645359B2 - Image display apparatus and control method thereof, storage medium, and image display system - Google Patents

Description

  The present invention relates to an image display device such as a liquid crystal projector and its control method, a storage medium storing a program for realizing the control method, the image display device, and an image supply device for supplying an image to the image display device. The present invention relates to an image display system comprising:

  Conventionally, an image captured by a digital camera is recorded as digital data on a recording medium in the digital camera, and the recorded image is reproduced on a display unit of the digital camera. In this case, Patent Document 1 proposes a technique that enables an image to be reproduced with a layout desired by a user. In Patent Document 1, a template is displayed when the album creation mode is entered, and an image can be output in a layout desired by the user by inserting an image into the template.

  Further, generally, a recording medium is inserted into a display device such as a projector to display a captured image. The display device has a screen display mode switching function for selecting a resolution (horizontal 4: vertical 3, horizontal 5: vertical 4, horizontal 16: vertical 9...) In order to match the resolution of the computer or the like used by the user. Is installed.

On the other hand, there is a demand that a digital camera and a display device are directly connected and an image recorded on a recording medium of the digital camera is displayed by operating the digital camera. This can be realized by adopting a communication standard called PictBridge, and the display device can display an image by a printing operation of the digital camera.
JP 2005-17621 A

  However, in the configuration in which the digital camera and the display device are directly connected as described above, when the user switches the resolution of the display device by the screen display mode switching function of the display device, the digital camera is notified that the resolution has been switched. There is no means to do this. For this reason, there is a problem that an image suitable for the resolution of the display device cannot be obtained from the digital camera, and an image display layout suitable for the image resolution cannot be set.

  In view of the above-described conventional problems, an object of the present invention is to provide an image display apparatus, a control method thereof, a storage medium, and an image display system as follows. That is, an image suitable for the resolution of the image display device is acquired from the image supply device, and an image display layout suitable for the image resolution can be switched by an operation on the image display device side.

In order to achieve the above object, an image display device of the present invention is an image display apparatus which communicates with an image supply device based on the communication protocol for printing, a display mode including the resolution and the layout of the screen A function including a printing condition stored in the storage unit in response to the start of communication with the image supply apparatus using the printing communication protocol, and a storage unit that stores the printing condition corresponding to any of the printing conditions. transmitting means for transmitting information, after transmitting the function information by said transmitting means, receiving means for receiving a job including the printing condition and the image designation information from the image supply apparatus, included in the job received receives the image designated in the image designation information are, and a control means for said image received, to display resolution and layout of the screen corresponding to the printing conditions included in the job Characterized in that it has.
To achieve the above object, a control method of an image display device of the present invention is a control method of an image display device in communication with the image supply device based on the communication protocol for printing, solutions of the screen Zodo and layout a storage step of storing bets in the storage means in association with any of the print condition display mode comprising, using a communication protocol for the print, depending on the start of communication with the image supply device, in the storage means A transmission step of transmitting function information including stored printing conditions; and a reception step of receiving a job including printing conditions and image designation information from the image supply apparatus after transmitting the function information by the transmission step; receives image designated in the image designation information included in the job received, the images received, the resolution of the screen corresponding to the printing conditions included in the job Characterized by a control step of displaying the layout.
In order to achieve the above object, a storage medium of the present invention is a storage medium storing a program for causing a computer to execute a control method of an image display apparatus that communicates with an image supply apparatus based on a printing communication protocol. the program includes a storage step of storing in the storage means in association with any of the print condition display mode including the resolution and the layout of the screen, using a communication protocol for the printing, the image supply device A transmission step of transmitting functional information including the printing conditions stored in the storage unit in response to the start of communication with the printing unit, and after transmitting the functional information through the transmission step, the printing conditions from the image supply device, receiving a receiving step for receiving a job and an image designation information, the image designated in the image designation information included in the job received And, the images received, and having a control step of displaying a resolution and layout of the screen corresponding to the printing conditions included in the job.
In order to achieve the above object, an image display system of the present invention communicates with an image supply apparatus that supplies an image and the image supply apparatus based on a communication protocol for printing, and receives and displays an image from the image supply apparatus. in an image display system including an image display device for the image display apparatus includes storage means for storing in association with any of the print condition display mode including the resolution and the layout of the screen, the printing In response to the start of communication with the image supply device using a communication protocol, a transmission unit that transmits function information including printing conditions stored in the storage unit, and the transmission unit transmits the function information. after the designated print condition from the image supply device, a receiving means for receiving a job and an image designation information, the image specifying information included in the job received Receiving an image, the image received, and having a control means for displaying in resolution and layout screen corresponding to the printing conditions included in the job.

  According to the present invention, in an image display device that communicates with an image supply device, an image suitable for the resolution of the image display device is acquired from the image supply device, and the image display device is adapted to the image resolution by an operation on the image display device side It becomes possible to switch the layout of the image display.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
In this embodiment, a method of connecting a liquid crystal projector and a digital camera with a USB cable and playing back an image stored in a recording medium of the digital camera on the liquid crystal projector by operating the digital camera will be described.

<Configuration of image display system>
FIG. 1 is a schematic diagram showing a configuration of an image display system according to an embodiment of the present invention.

  The liquid crystal projector 100 is connected to a digital camera 200 that is an image supply device via a USB cable 201 inserted into the USB interface 106. A screen 119 for projecting a projection image from the liquid crystal projector 100 is disposed in the vicinity of the liquid crystal projector 100.

  Note that the communication medium of the image display system constructed in the present embodiment is not limited to the USB cable, but may be a wired / wireless LAN, Bluetooth, or the like, and the present embodiment does not depend on the form of the system to be constructed. .

<Configuration of LCD projector>
FIG. 2 is a block diagram showing the overall configuration of the liquid crystal projector used in the embodiment of the present invention.

  The liquid crystal projector 100 includes a memory 101, a nonvolatile memory 102, an operation unit 103, a remote control light receiving unit 120, a power supply control unit 104, a power supply unit 105, an Ethernet interface 107, a USB interface 106, and an image processing circuit 108. . These devices are connected to the system control circuit 109.

  The memory 101 is a memory that temporarily stores constants, variables, images, and the like for operation of the system control circuit 109. The non-volatile memory 102 is an electrically erasable / recordable non-volatile memory in which a firmware program of the system control circuit 109 is recorded. Capability information notified from the liquid crystal projector 100 to the digital camera can be recorded in the nonvolatile memory 102.

  The operation unit 103 has a function of inputting various operation instructions of the system control circuit 109. The remote control light receiving unit 120 receives a remote control key from an infrared remote controller attached to the liquid crystal projector 100 and inputs various operation instructions of the system control circuit 109. The power supply control unit 104 includes a DC-DC converter, a switch circuit, and the like, and the power supply unit 105 includes an AC adapter and the like.

  The Ethernet interface 107 is an interface for connecting to a network such as Ethernet. The USB interface 106 is an interface for connecting to a digital camera, a USB memory, or the like using a USB cable.

  The image processing circuit 108 performs processing for setting a display position of a JPEG image read from a digital camera, a USB memory, or the like, and processing for overlaying information such as a file name, date, and Exif. The system control circuit 109 is a circuit that controls the entire liquid crystal projector 100.

  The liquid crystal projector 100 further includes a frame memory 110, a projector video signal processing circuit 111, a signal level adjustment circuit 112, a liquid crystal driver 113, a lamp driving circuit (ballast) 115, a lamp 116, a liquid crystal panel 117, and a lens group 118. Yes.

  The projector video signal processing circuit 111 performs signal processing for converting digitized RGB signals into signals suitable for the projector apparatus. Examples of such signal processing include interlaced progressive conversion processing, frame rate conversion processing, and resolution conversion processing.

  The frame memory 110 is used in signal processing when converting into a signal suitable for a projector, and can record RGB signals of one frame or more. The signal level adjustment circuit 112 adjusts the output from the projector video signal processing circuit 111 to a signal level suitable for the projection image projected by the projector device. The liquid crystal driver 113 drives the liquid crystal panel 117 based on the output signal of the signal level adjustment circuit 112.

  The lamp 116 is a light source for projecting a projection image on the screen 119. The power source 105 supplies power to the lamp 116. The lamp driving circuit (ballast) 115 generates a stable high voltage to be supplied to the lamp 116 from the power supplied from the power source 105. An R / G / B color filter is bonded to the liquid crystal panel 117, and the light projected from the lamp 116 is transmitted and blocked in accordance with the RGB image. The lens group 118 forms the RGB color images that have passed through the liquid crystal panel 117 on the screen 119 and changes the size of the projected image. The screen 119 provides a projection surface on which a video signal is imaged.

  FIG. 3 is an external view showing an example of a remote control of the liquid crystal projector 100 shown in FIG.

  This remote control includes a remote control issuing unit 3500, a POWER button 3501, an AUTO SET button 3502, an input signal setting / image setting unit 3503, a direction button 3504, a decision button 3505, and a page feed / volume setting unit 3506.

  The remote control issuing unit 3500 sends a remote control signal to the liquid crystal projector 100 main body. A POWER button 3501 turns on / off the power. An AUTO SET button 3502 automatically adjusts focus, keystone, and screen color correction.

  An input signal setting / image setting unit 3503 is a group of buttons for performing input signal selection, focus adjustment, image quality setting, and the like. A direction button 3504 is used to specify the up / down / left / right directions using a menu or the like. An enter button 3505 confirms the item selected on the menu or the like. A page turning / volume setting unit 3506 is a group of buttons for performing page turning of an image, zooming, volume adjustment, and the like.

  Next, the image resolution of the liquid crystal projector 100 will be described.

  FIG. 4 is a schematic diagram for explaining the resolution of the image of the liquid crystal projector 100 shown in FIG.

  There are four types of image resolutions of the liquid crystal projector 100: full screen 4100, normal 4102, wide 4104, and real 4106.

  The aspect ratio of the full screen 4100 is 4 to 3. When the signal format is “SXGA +”, the resolution is x1 = 1400 dots and y1 = 1050 dots. When the resolution of the full screen 4100 is set and a computer screen having a resolution of horizontal 5: vertical 4 (SXGA) is input, the image is compressed in the vertical or horizontal direction.

  The aspect ratio of normal 4102 is 5 to 4. When the signal format is “SXGA”, the resolution is x2 = 1280 dots and y2 = 1024 dots.

  The aspect ratio of the wide 4104 is 16: 9. When the signal format is “SXGA +” wide, the resolution is x3 = 1400 and y3 = 787.5 dots. When a resolution of horizontal 4104 is set and a computer screen having a resolution of horizontal 5: vertical 4 (SXGA) is input, the image does not appear in the vertical or horizontal direction.

  The real 4106 displays the computer screen in the original size.

  Next, a management table of capability information notified from the liquid crystal projector 100 to the digital camera will be described. Capability information is an example of function information used in the present invention.

  FIG. 5 is a table showing the capability information management table in the present embodiment.

  The Capability information management table manages the printable paper size 4202 and layout 4204 in association with the image resolution 4200 of the liquid crystal projector. In short, it is a table that stores image display modes in association with printing conditions, and the image display modes include either or both of the image display size and the layout method.

  There are four types of screen resolutions 4200 as described with reference to FIG. A printable paper size 4202 and a layout 4204 are assigned to the resolution 4200 of each screen. When printing, there is a digital camera that reduces a print image in accordance with the paper size and layout.

  For example, a digital camera in which a printer capable of expressing a resolution of up to 20 * width: 20 pixels per 1 square meter is connected is as follows. That is, if an image (width: 4000, height: 3000 pixels) is printed without a card (85.6 mm x 54 mm) and borderless, it is resized to an image of width: 1712 and height: 1080. If the size of the image to be printed is smaller than the width: 1712 and the height: 1080, the digital camera does not perform the resizing process. Also, when printed with a card (85.6mm x 54mm) · 2Up, it is resized to an image of width: 1080 · height: 856, and when printed with a card (85.6mm x 54mm) · 4Up, the width: 856 · height : Resize to 540 images. That is, the resized image size is determined in proportion to the paper size and layout. Therefore, the paper size and layout allocated to the screen resolution are selected so that the image size is equal to or larger than the resolution of the displayable image.

  In the case of normal 4102 (horizontal 5: vertical 4, horizontal 1280 dots: vertical 1024 dots), the paper size “8” × 10 ”(254.0 mm × 203.2 mm), which is the aspect ratio of horizontal 5: vertical 4, is assigned. When the digital camera prints with the paper size “8” × 10 ”(254.0 mm × 203.2 mm) to the printer, the digital camera resizes the image with a width of 5080 and a height of 4064. . That is, since the image is larger than 1280 dots: 1024 dots, which is the resolution of the normal 4102, an optimal image can be displayed.

  In the case of the full screen 4100 (horizontal 4: vertical 3, horizontal 1400 dots / vertical 1050 dots), the paper size “Letter (279.2 mm × 216.0 mm)” of horizontal 4: vertical 3.09 is assigned. When the digital camera prints with the paper size “Letter (279.2 mm × 216.0 mm)” on the printer, the digital camera resizes the image to have a width of 5584 and a height of 4320, so the following can be said. That is, since the image is larger than 1400 dots: 1050 dots, which is the resolution of the full screen 4100, an optimal image can be displayed.

  In the case of wide 4104 (horizontal 16: vertical 9, horizontal 1400 dots: vertical 787.5), a paper size “Wide (180.62 mm × 101.6 mm)” of horizontal 16: vertical 9 is assigned. When the digital camera prints with the paper size “Wide (180.62 mm × 101.6 mm)” on the printer, the digital camera resizes the image to have a width: 3613 and a height: 2032. Therefore, the following can be said. That is, since the image is larger than 1400 dots: 787.5 dots, which is the resolution of the wide 4104, an optimal image can be displayed.

  The layout 4204 assigns the number of images that can be displayed according to the resolution of the image. For example, the wide 4101 with the signal format “SXGA +” has a resolution of x3 = 1400 and y3 = 787.5 dots, and when 20 images are displayed in a layout of 5 horizontal by 4 vertical, one image size Can be expressed by horizontal 280 dots and vertical 196 dots. On the other hand, when printing with the paper size “Wide (180.62 mm × 101.6 mm)” / layout 20Up, the digital camera resizes the image to a width: 722 / height: 508. Since the image is larger than the image resolution and higher than the thumbnail image, a 20UP layout is set. Therefore, when the resolution of the image becomes high, the number of images in the layout 4204 can be increased.

<Configuration of digital camera>
Next, the configuration of the digital camera used in the embodiment of the present invention will be described with reference to FIGS.

  A digital camera used in an embodiment of the present invention has the above-described recording medium that holds a captured image and a USB interface, and selects and prints the stored captured image when connected to a printer via the USB interface. Equipped with functions that can be.

  FIG. 6 is a conceptual diagram showing a folder structure of a recording medium mounted on the digital camera used in the embodiment of the present invention.

  The DPOF file indicates four types of text file groups including three types of control files and a UNICODE character string description file 304 that is described in Unicode and stores user information. The three types of control files are an automatic print file 301, an automatic reproduction file 302, and an automatic transmission file 303.

  The DPOF file is configured under the “MISC” directory 300 directly under the root directory. The captured image 305 is stored under the “DCIM” directory.

  The automatic print file 301 includes a header portion such as a digital camera name and DPOF file creation date and time, a product ID, print type designation, print number designation, file format, image file path information, image shooting date and time information, etc. for each print job. Hold on.

  FIG. 7 is an external view showing the back of the digital camera 200 used in the embodiment of the present invention.

  On the back of the digital camera 200, a changeover switch 2600, a direct print button 2601, a SET button 2602, an up / down / left / right button 2603, a MENU button 2604, and a liquid crystal monitor 2605 are provided.

  A change-over switch 2600 is a switch for switching a mode for photographing or displaying a photographed image, and a direct print button 2601 is a button used when directly printing an image displayed on the liquid crystal monitor 2605. is there. When connected to a PictBridge compatible printer, the button lamp is lit. When the direct print button 2601 is pressed, a screen (not shown) indicating that direct print processing is in progress is displayed.

  The SET button 2603 is a button used when, for example, setting values are confirmed. When pressed in this state, a screen (not shown) relating to direct designated printing is displayed. The up / down / left / right button 2603 is used to move the cursor up / down / left / right when selecting a menu, or to display the next image or the previous image when there are a plurality of images.

<DPS for realizing PictBridge standard>
FIG. 8 is a conceptual diagram showing a DPS system model in the embodiment of the present invention.

  The DPS architecture for realizing the PictBridge standard is a server / client model, and includes a print server 501, a print client 502, a storage client 503, and a storage server 504. Note that DPS is an abbreviation for Digital Photo Solution for Imaging Device.

  Basically, each DPS operation is completed by a sequence in which the server responds to a request from the client and returns the result to the client. Further, each DPS event is completed in a sequence in which the client responds to a notification issued from the server and returns a receipt confirmation to the server.

  Specifically, the print server 501 of the liquid crystal projector 100 responds in response to a print request from the print client 502 of the digital camera 200. Subsequently, the storage client 503 of the liquid crystal projector 100 requests image data in order to project an image, and returns image data from the storage server 504 of the digital camera 200. In response to the issuance of a DPS event such as a device state from the print server 501 of the liquid crystal projector 100, the print client 502 of the digital camera 200 returns a confirmation of receipt of the DPS event.

  The print server 501 / client 502 is executed by a firmware program that exists on the nonvolatile memory 102 of the liquid crystal projector 100. Although not shown, in order to operate the print server 501 / client 502, a USB host driver that controls the USB I / F 106 and a PTP initiator that is a communication protocol for printing are required. PTP is an abbreviation for Picture Transfer Protocol.

  On the other hand, in order to operate the storage client 503 / server 504, the digital camera 200 is equipped with a USB device driver and a PTP responder which is a communication protocol.

<Contents of DPS command>
9, FIG. 10 and FIG. 11 are description format diagrams showing examples of the contents of the DPS command according to the embodiment.

  All DPS commands and events are described in XML format. A command for confirming what service function the PictBridge compatible device has is DPS_ConfigurePrintService, which describes the DPS version, vendor name, product name, serial number, and the like. Reference numeral 401 in FIG. 9 is an example of a command DPS_ConfigurePrintService transmitted by the print client 502. A Result value is described in the print server 501 responding to the command (not shown).

  A command for inquiring the capability that can be set to the liquid crystal projector 100 is DPS_GetCapability. Queries can be made about quality, paper size, paper type, file type, date printing, file name printing, image optimization, layout, fixedSize, and trimming capabilities. 403 in FIG. 9 is an example of a command DPS_GetCapability that the print client 502 transmits to inquire about the paper size. In response to the command from the print server 501, the Result value and the paper size (standard, L size, 2L size, etc.) that can be set in the liquid crystal projector are described (not shown).

  A command for requesting printing from the digital camera 200 is DPS_StartJob. The print request parameters include print settings and print information. In the print setting, contents (quality, paper size, paper type, file type, date printing, file name printing, image optimization, layout, fixedSize, and trimming) set by the user operation of the digital camera 200 are described. The print information describes an image file ID, the number of prints, etc. for one or more print images designated for printing. The image file ID is an example of image designation information used in the present invention. Reference numeral 405 in FIG. 9 illustrates an example of a command DPS_StartJob that the print client 502 requests to print. A Result value is described in the print server 501 responding to the command (not shown).

  An event for notifying the printing state from the liquid crystal projector 100 is DPS_NotifyJobStatus, which describes the progress of printing, the total number of printed sheets, and the like. 407 in FIG. 10 is an example of an event DPS_NotifyJobStatus that the print server 501 transmits to notify the print state. A Result value is described in the print client 502 responding to the command (not shown).

  An event for notifying the device state of the liquid crystal projector 100 from the liquid crystal projector 100 is DPS_NotifyDeviceStatus. This describes information such as the print status such as idle, printing, pause, etc., error contents such as image file, capability change presence / absence, and whether a new print job can be accepted. 409 in FIG. 10 is an example of an event DPS_NotifyDeviceStatus that the print server 501 transmits to notify the device status. A Result value is described in the print client 502 responding to the command (not shown).

  A command for canceling printing from the digital camera 200 is DPS_AbortJob. 411 in FIG. 10 is a command DPS_AbortJob that the print client 502 transmits to cancel printing. A Result value is described in the print server 501 responding to the command (not shown).

  A command for acquiring a file ID of a necessary image from the liquid crystal projector 100 is DPS_GetFileID, which describes an image file path and the like. Reference numeral 420 in FIG. 11 is an example of a command DPS_GetFileID that the storage client 503 transmits in order to acquire a file ID of an image. In the case where the storage server 504 responds to the command, the Result value and the file ID are described (not shown).

  A command for obtaining necessary image file information from the liquid crystal projector 100 is DPS_GetFileInfo. 422 in FIG. 11 is an example of a command DPS_GetFileInfo transmitted by the storage client 503 to acquire file information of an image, and describes the file ID of the image from which the information has been acquired. In response to the command, the storage server 504 describes the Result value, the file type, the file size, the thumbnail format, and the thumbnail size of the image (not shown).

  A command for acquiring a necessary image from the liquid crystal projector 100 is DPS_GetFile. 424 in FIG. 11 is an example of a command DPS_GetFile that the storage client 503 transmits to acquire an image, and describes the file ID of the image from which information is acquired. When the storage server 504 responds to the command, the Result value and the size of the acquired image are described (not shown). Although not shown, there is also a command DSP_GetPartialFile that acquires an image by dividing it. DPS_GetPartialFile may be used instead of DPS_GetFile.

<Operation according to the first embodiment>
The operation according to the present embodiment will be described below based on the configuration of the liquid crystal projector 100 and the configuration of the digital camera 200 described above. That is, an operation of connecting the liquid crystal projector 100 and the digital camera 200 and projecting an image held by the digital camera 200 onto the screen 119 by a user operation on the digital camera 200 side will be described. The control of the liquid crystal projector 100 is executed by a firmware program existing on the nonvolatile memory 102 in FIG.

(A) Sequence of DPS Command FIG. 12 is a sequence diagram of a DPS command from the start of connection between the liquid crystal projector 100 and the digital camera 200 to the completion of image display in the present embodiment. That is, this sequence represents a sequence until the liquid crystal projector 100 and the digital camera 200 perform direct connection based on the PictBridge standard and display one image.

  First, a negotiation is performed between the liquid crystal projector 100 and the digital camera 200 to confirm whether or not each has a DPS function. In the PictBridge standard, DPS Discovery (process 601 in FIG. 12) is performed after a PTP connection is established between both devices using USB connection as a trigger. Specifically, the digital camera 200 and the liquid crystal projector 100 are respectively connected to DDISCVRY. DPS and HDISCVRY. By sending an empty script file called DPS, it is confirmed that the devices are compatible with PictBridge.

  In the next process 602, the print client 502 of the digital camera 200 issues a DPS_ConfigurePrintService 401 to the print server 501 of the liquid crystal projector 100. The purpose is to confirm the functions of both the liquid crystal projector 100 and the digital camera 200. That is, the LCD projector 100 notifies the print server 501 / storage client 503 and the digital camera 200 notifies the print client 502 / storage server 504.

  In the subsequent process 603, the print client 502 issues a DPS_GetCapability 403 to the print server 501 in order to inquire what display settings can be made. The print server 501 performs the capability information acquisition process shown in FIG. 13 described later, acquires the print capability information associated with the screen resolution of the liquid crystal projector 100, and notifies the print client 502 of the capability information. As a result, the capability information obtained by the print client 502 is reflected on the user interface (UI) of the digital camera 200. Then, functions (quality, paper size, paper type, file type, date printing, file name printing, image optimization, layout, fixedSize, and trimming) that can be selected by the user are determined.

  In the next process 604, the user selects an image to be displayed on the liquid crystal projector 100 from the digital camera 200 and presses the direct print button 2601. By the operation of process 604, the print client 502 issues a DPS_StartJob 405 to the print server 501 in the next process 605. As a result, the print settings and print information described above are notified from the print client 502 to the print server 501 and the display process is started. At this time, in this embodiment, even if the parameter of DPS_StartJob 405 specifies that the number of print images is two or more, the print server 501 interprets it as a display instruction for displaying one sheet.

  In subsequent processing 606, the print server 501 issues a DPS_NotifyDeviceStatus 409 to the print client 502 in order to notify the digital camera 200 that the liquid crystal projector 100 has transitioned from the standby state to the display processing state.

  In the next process 607, the print server 501 performs the following notification to the digital camera 200 in order to notify the digital camera 200 of how many sheets are currently displayed in the image file designated for printing. I do. That is, DPS_NotifyJobStatus 407 is issued to the print client 502.

  In the subsequent process 608, the storage client 503 issues a DPS_GetFileInfo 422 to the storage server 504 in order to acquire the file type and file size information of the image to be displayed next. Here, based on the file size information sent to the storage client 503, the storage client 503 secures memory and prepares for the acquisition of the subsequent image file.

  In the next process 609, the storage client 503 issues a DPS_GetFile 424 to the storage server 504 in order to collectively acquire image file data based on the information acquired in process 608. There is also a method of performing division acquisition using DPS_GetPartialFile.

  In process 610, the storage client 503 transmits the data acquired in process 609 to the print device, and the print device displays an image according to the layout (<layout>) described in the DPS StartJob 405. Here, the print device is the image processing circuit 108.

  When the above is completed, as processing 611, the print server 501 issues a DPS_NotifyDeviceStatus 409 to the print client 502 in order to notify the digital camera 200 that the liquid crystal projector 100 has transitioned to the standby state.

(B) Details of Capability Information Acquisition Process FIG. 13 is a flowchart showing details of the capability information acquisition process of the liquid crystal projector 100, which is executed in the process 603 of FIG.

  First, in step S <b> 40, the system control circuit 109 acquires screen resolution information of the liquid crystal projector 100 written in the nonvolatile memory 102. In the next step S <b> 41, the system control circuit 109 acquires the paper size capability information associated with the acquired image resolution from the capability information management table of FIG. 5. For example, when the screen resolution is normal (horizontal 5: vertical 4), the paper size “8” × 10 ”is acquired.

  In subsequent step S42, the system control circuit 109 acquires the capability information of the layout associated with the acquired image resolution from the capability information management table of FIG. For example, when the screen resolution is normal (horizontal 5: vertical 4), the layout “with border, without border, 2Up, 4Up” is acquired.

  In the next step S43, the system control circuit 109 determines whether or not the capability information associated with the resolution of the entire screen has been acquired. If not acquired, the processing from step S41 is repeated.

(C) Details of DPS Discovery FIG. 14 is a sequence diagram showing details of the DPS Discovery shown in FIG.

  In the PictBridge standard, after a PTP connection is established between both devices using a USB connection as a trigger, the DPS Discovery process 601 is performed. Both the liquid crystal projector 100 and the digital camera 200 employ PTP as a communication protocol. The liquid crystal projector 100 operates as a PTP initiator, and the digital camera 200 operates as a PTP responder. A PTP Initiator is a device that starts a session and issues a PTP command to a responder. The PTP responder is a device that returns a response to the PTP command from the PTP initiator.

  First, in process 701, the PTP Initiator issues GetDeviceInfo to the PTP responder in order to obtain information about the digital camera 200. The PTP command is composed of three phases, Command, Data, and Response. In addition, only the Data phase is not essential, and it differs for each command including the direction of data. Usually, the data in the direction defined for each command is transferred, and a response to the data is returned as a response.

  In the next process 702, the PTP Initiator issues an OpenSession to the PTP responder and notifies the start of the session. In subsequent step 703, the PTP Initiator issues GetNumObject to the PTP responder, and acquires the number of scripts stored in the storage of the digital camera 200.

  In the next process 704, the PTP Initiator issues GetObjectHandles to the PTP responder, and acquires the handle of the script stored in the storage of the digital camera 200. In the subsequent process 705, the PTP Initiator issues GetObjectInfo to the PTP responder. Then, from PTP responder, DDISCVRY. By acquiring empty script file information called DPS, it is confirmed that the digital camera 200 has the DPS function. In process 706, the PTP responder also sends HDISCVRY.1 from the Data phase of SendObjectInfo that issues the PTP Initiator. Empty script file information called DPS is notified. This confirms that the liquid crystal projector 100 has the DPS function.

  Thus, the DPS Discovery process 601 is completed.

(D) Processing when the liquid crystal projector issues a DPS command FIG. 15 is a sequence diagram showing a sequence of PTP commands when the liquid crystal projector 100 issues a DPS command to the digital camera 200.

  First, in process 1301, the DPS Client issues a DPS command (in the example of FIG. 15, DPS_NotifyDeviceStatus 409 is described as an example) to the PTP Initiator. In the subsequent process 1302, SendObjectInfo is issued to notify the PTP responder of the file type and file size of the object to be transmitted from the PTP Initiator.

  In the next process 1303, the PTP Initiator issues a SendObject to the PTP responder in order to transmit the DPS command. In the subsequent process 1304, the DPS command acquired by the PTP responder is transmitted to the DPS server.

  As described above, the DPS command issued by the liquid crystal projector 100 is transmitted to the digital camera 200.

(E) Processing when Liquid Crystal Projector Receives DPS Command FIG. 16 is a sequence diagram showing a sequence at the PTP command level when the liquid crystal projector 100 receives a DPS command from the digital camera 200.

  First, in process 1401, the DPS Server issues a DPS command (in the example of FIG. 16, DPS_StartJob 405 is described as an example) to the PTP responder. In the subsequent process 1402, the PTP responder receiving it issues a PTP event called RequestObjectTransfer to the PTP Initiator. Then, the PTP initiator is requested to acquire an object from the PTP responder.

  In the next process 1403, the PTP Initiator issues GetObjectInfo to the PTP responder in order to acquire the file type and file size of the object to be acquired. In the subsequent process 1404, the PTP Initiator issues a GetObject to the PTP responder in order to acquire the DPS command.

  In the next process 1405, the DPS command acquired by the PTP Initiator is transmitted to the DPS Client.

  Thus, the DPS command issued by the digital camera 200 is received by the liquid crystal projector 100.

(F) Details of Image Display Processing FIG. 17 is a flowchart showing details of image display processing according to the first embodiment. In this display processing, processing is performed in processing 610 in FIG. 12, and processing for displaying an image is performed according to the layout designated for printing as described above.

  First, in step S50, the storage client 503 stores the image data acquired from the storage server 504 in a cache memory having a configuration described later (see FIGS. 18A and 18B). The cache memory can store an image or an image ID corresponding to the maximum value of the layout (4204 in FIG. 5) supported by the liquid crystal projector 100.

  In the next step S51, the storage client 503 acquires layout information designated for printing. In the subsequent step S52, when the image for the acquired layout information is stored in the cache memory, or when only the image ID is stored in the cache memory, the image is acquired from the storage server 504.

  In the next step S53, the print device displays the acquired image according to the layout.

  18A and 18B are structural diagrams of the cache memory shown in FIG.

  The cache memory 4400 shown in FIG. 18A can store an image of the maximum value (4402 in FIG. 18B) of the layout (4204 in FIG. 5) supported by the liquid crystal projector 100. For example, since the maximum value of the layout (4204 in FIG. 5) is 20 UP, 20 images can be stored. Reference numeral 4404 in FIG. 18A denotes a pointer of the latest image, and the print device acquires an image corresponding to the print layout (4406 in FIG. 18) designated from the digital camera 200.

  On the other hand, instead of storing the image itself, a cache memory 4410 for storing the image ID as shown in FIG. 18B may be prepared. The cache memory 4410 can store an image of the maximum value (4412 in FIG. 18B) of the layout (4204 in FIG. 5) supported by the liquid crystal projector 100. For example, since the maximum value of the layout (4204 in FIG. 5) is 20 UP, 20 images can be stored. 1814 in FIG. 18B is a pointer of the latest image ID. When the storage client 503 receives from the storage server 504 an image of the print layout (4416 in FIG. 18B) designated from the digital camera 200, the print device acquires the image.

(G) Example of Screen Display Layout Next, when the Capability information management table layout 4204 shown in FIG. 5 is specified, the layout of the screen on which the liquid crystal projector 100 displays each image will be described with reference to FIGS. A description will be given with reference to FIG.

  19, 20, and 21 are layout diagrams illustrating screen display examples when the liquid crystal projector 100 performs layout display of the print image in the first embodiment.

  Reference numerals 4501 to 4504 in FIG. 19 denote screen displays when the screen resolution is normal (horizontal 5: vertical 4). When the signal format is “SXGA”, the resolution is x2 = 1280 dots and y2 = 1024 dots. Reference numeral 4501 denotes a screen display when a layout is designated for printing without a border, and displays an image according to the resolution. Reference numeral 4502 denotes a screen display when the layout is specified and printing is specified, and the border is displayed for 5% of the image, that is, 64 dots and 54 dots, and the image is displayed with x2a = 1236 dots and y2a = 970 dots. indicate. Reference numeral 4503 denotes a screen display when printing is designated with 2UP, and one image is displayed with x2b = 640 dots and y2b = 512 dots which are ¼ of the resolution. Reference numeral 4504 denotes a screen display when printing is designated with 4UP, and one image is displayed with x2c = 640 dots and y2c = 512 dots, which are 1/4 of the resolution.

  Reference numerals 4511 to 4516 in FIG. 20 denote screen displays when the screen resolution is full screen (horizontal 4: vertical 3). When the signal format is “SXGA +”, the resolution is x1 = 1400 dots and y1 = 1050 dots. Reference numeral 4511 denotes a screen display when the layout is designated to be printed without a border, and displays an image according to the resolution. Reference numeral 4512 denotes a screen display when the layout is specified and printing is specified, and the border is displayed for 5% of the image, that is, 70 dots and 52 dots, and the image is x1a = 1330 dots and y1a = 998 dots. indicate. Reference numeral 4513 denotes a screen display when printing is designated with 2UP, and one image is displayed with x1b = 700 dots and y1b = 525 dots which are ¼ of the resolution. Reference numeral 4514 denotes a screen display when printing is designated with 4UP, and one image is displayed with x1c = 700 dots and y1c = 525 dots which are ¼ of the resolution. Reference numeral 4515 denotes a screen display when printing is designated with 9UP, and one image is displayed with x1d = 466 dots and y1d = 350 dots which are 1/9 of the resolution. Reference numeral 4516 denotes a screen display when printing is designated with 16UP, and one image is displayed with x1e = 350 dots and y1e = 262 dots which are 1/16 of the resolution.

  Reference numerals 4521 to 4527 in FIG. 21 denote screen displays when the screen resolution is wide (horizontal 16: vertical 9). When the signal format is “SXGA +” wide, the resolution is x3 = 1400 and y3 = 787.5 dots. Reference numeral 4521 denotes a screen display when the layout is designated to be printed without a border, and displays an image according to the resolution. 4522 is a screen display when the layout is specified and printing is specified, and the border is displayed for 5% of the image, that is, 70 dots and 39 dots, and the image is displayed with x3a = 1330 dots and y3a = 748 dots. indicate. Reference numeral 4523 denotes a screen display when printing is designated with 2UP, and one image is displayed with x3b = 700 dots and y3b = 393 dots which are ¼ of the resolution. Reference numeral 4524 denotes a screen display when printing is designated with 4UP, and one image is displayed with x3c = 700 dots and y3c = 393 dots which are ¼ of the resolution. Reference numeral 4525 denotes screen display when printing is designated with 6UP, and one image is displayed with x3d = 466 dots and y3d = 393 dots which are 1/6 of the resolution. Reference numeral 4526 denotes a screen display when printing is designated with 12 UP, and one image is displayed with x3e = 350 dots and y3e = 262 dots which are 1/12 of the resolution. Reference numeral 4527 denotes a screen display when printing is designated with 20UP, and one image is displayed with x3f = 280 dots and y3f = 196 dots which are 1/20 of the resolution.

(H) Image Resolution Switching Process FIG. 22 is a flowchart showing an image resolution switching process according to the first embodiment.

  When the user operates the remote controller 3500 or the like, in step S60, the system control circuit 109 switches the resolution of the image. In the next step S61, the print server 501 performs Capability information reacquisition processing, and in the subsequent step S62, the print server 501 acquires the currently displayed layout information.

  In the next step S63, the print server 501 acquires layout information of Capability information associated with the resolution of the switched image. In the following step S64, the print server 501 determines whether there is Capability layout information associated with the resolution of the image that matches the currently displayed layout information.

  If it is determined that it exists, the process ends. If it is determined that the image does not exist, the print server 501 switches the image layout display so as to match the layout information of the Capability information associated with the resolution of the image. For example, when the image resolution is changed from full screen (horizontal 4: vertical 3) and layout is 9UP to wide (16: vertical 9), the image resolution is as follows. become. That is, since there is no 9UP in the layout information associated with wide, the display is switched to display an image with 6UP.

(I) Details of Capability Information Reacquisition Processing FIG. 23 is a sequence diagram showing details of the capability information reacquisition processing in step S61 of FIG.

  First, in process 801, when the capability information of the liquid crystal projector 100 changes, the print server 501 issues a DPS event called DPS_NotifyDeviceStatus 409 to the print client 502. At this time, the value of CapabilityChanged, which is one of the parameters of DPS_NotifyDeviceStatus 409, is True.

  In the next process 802, the Storage Server receives this and issues DPS_GetCapability 403 to the Storage client, and acquires Capability information of the liquid crystal projector 100.

(J) Image Group Display Switching Process FIG. 24 is a sequence diagram showing a display switching process for an image group for which DPOF printing is designated in the present embodiment.

  First, in process 1001, the user sets a plurality of images to be displayed on the liquid crystal projector 100 from the UI of the digital camera 200, and performs a DPOF printing start operation. In the next process 1002, the print client 502 issues a DPS_StartJob 405 to the print server 501. The print server 501 analyzes the parameter of the DPS_StartJob 405 and determines that the type of the file to be transmitted next is the automatic print file 301.

  In the next process 1003, the storage client 503 issues a DPS_GetFileInfo 422 to the storage server 504 in order to know the file size of the automatic print file 301 in advance. In the subsequent process 1004, the storage client 503 issues a DPS_GetFile to the storage server 504 in order to acquire the automatic print file 301, and analyzes the contents of the automatic print file 301.

  In the next process 1005, the print server 501 issues a DPS_NotifyDeviceStatus 409 to the print client 502 in order to notify that its own state transitions to the Printing state. In the subsequent process 1006, the storage client 503 issues a DPS_GetFileID 420 to the storage server 504 in order to acquire the file ID of the image to be displayed first.

  In the next process 1008, the print server 501 issues a DPS_NotifyJobStatus 407 to the print client 502 in order to notify the current number of display images out of the total number of images designated for printing in the automatic print file 301. In the subsequent process 1009, the storage client 503 issues a DPS_GetFileInfo 422 to the storage server 504 using the file ID acquired in process 1006 in order to acquire the file type and file size of the image to be acquired next.

  In the next process 1010, the storage client 503 issues a DPS_GetFile 424 to the storage server 504 in order to acquire image data at once. In the subsequent process 1011, the image file acquired by the storage client 503 is transmitted to Print Device. The print device displays an image according to the layout (<layout>) described in DPS StartJob 405. When a plurality of images are displayed by DPOF printing, the display is switched to the next image by performing a key operation for image advance by the page advance / volume setting unit 3506 from the remote controller of the liquid crystal projector 100. Further, even if a plurality of print settings are set for the same image, it is regarded as a single print.

  In the next process 1012, an image feed operation is performed from the page feed / volume setting unit 3506 of the liquid crystal projector 100. In the subsequent process 1013, the print server 501 issues a DPS_NotifyJobStatus 407 to the print client 502 in order to notify the current number of displayed images among the total number of images designated for printing in the automatic print file 301.

  In the next process 1014, the storage client 503 issues a DPS_GetFileID to the storage server 504 in order to acquire the file ID of the image to be displayed next, as with the first image. In the subsequent process 1015, the storage client 503 issues a DPS_GetFileInfo 422 to the storage server 504 using the file ID acquired in process 1014 in order to acquire the file type and file size of the image to be acquired next.

  In the next process 1016, the storage client 503 issues a DPS_GetFile 424 to the storage server 504 in order to acquire image data at once. In the subsequent process 1017, the storage client 503 transmits the image data acquired in the process 1016 to the print device. Again, the print device displays an image according to the layout (<layout>) described in DPS StartJob 405. Further, the display is not switched to the next image unless the image feed key operation is performed from the page feed / volume setting unit 3506 of the liquid crystal projector 100. Further, even if a plurality of print settings are set for the same image, it is regarded as a single print.

  In the next process 1018, when the image display designated for printing by DPOF is completed, the liquid crystal projector 100 shifts to a standby state. As a result, the print server 501 issues a DPS_NotifyDeviceStatus 409 to the print client 502 in order to notify it. If the image display is not completed, the above-described sequence from the processing 1012 to the processing 1017 is repeated until the image display is completed.

<Advantages of First Embodiment>
According to the first embodiment, in a system in which the digital camera 200 and the liquid crystal projector 100 are connected by USB, an image held by the digital camera 200 is operated by operating an operation member such as the remote controller 3500, thereby the liquid crystal projector. 100 can be displayed.

  Further, an image can be displayed with a layout suitable for the resolution of the image of the liquid crystal projector 100. Thereby, an image desired by the user can be browsed in a layout desired by the user. Furthermore, when the screen display mode of the liquid crystal projector 100 is switched by operating the remote control 3500 of the liquid crystal projector 100, the digital camera 200 is notified that the image resolution has been switched. This makes it possible to display an image with a layout suitable for the resolution of the switched image.

  In the present embodiment, the system using the liquid crystal projector 100 and the digital camera 200 has been described. However, the present invention can also be applied to devices that display images, such as televisions and image viewers.

[Second Embodiment]
Next, a second embodiment of the present invention will be described.

  The configuration of the liquid crystal projector 100, the configuration of the liquid crystal projector 100 and the digital camera 200, and the connection method in the second embodiment are the same as those in the first embodiment, and a description thereof will be omitted. The difference between the second embodiment and the first embodiment is that the liquid crystal projector 100 displays each piece of image information together with the image by operating the digital camera 200. Hereafter, the characteristic part in this Embodiment is demonstrated.

<Capability information management table>
FIG. 25 is a table showing a capability information management table according to the second embodiment.

  The Capability information management table manages the image resolution 4200 of the liquid crystal projector 100 in association with the paper size 4702, layout 4704, date printing 4706, and file name 4708, which are information related to printing.

  There are four types of screen resolutions 4200 as described with reference to FIG. As shown in FIG. 25, a paper size 4702 close to the aspect ratio of the screen resolution is assigned to the resolution 4200 of each screen. The difference from FIG. 5 is that a sheet size 4707 is prepared for printing an image with Exif information added.

  The layout 4704 has layout information for each paper size 4707. The date print 4706 has information on whether or not to print the date for each paper size 4707. The file name print 4708 has information on whether or not to print a file name for each paper size 4707.

<DPS command sequence>
In process 603 of FIG. 12, the liquid crystal projector 100 issues a DPS_GetCapability 403 to the print server 501 from the print client 502 of the digital camera 200 in order to inquire what display settings are possible. The print server 501 performs the capability information acquisition process shown in FIG. 13 and notifies the print client 502 of the print capability information associated with the screen resolution of the liquid crystal projector 100. At that time, the print client 502 of the digital camera 200 acquires the capability information described in the capability information management table shown in FIG.

  As a result, the capability information obtained by the print client 502 is reflected in the UI of the digital camera 200 to determine the functions that can be selected by the user.

  FIG. 26 is a flowchart illustrating details of image display processing according to the second embodiment. In this display processing, processing is performed in processing 610 of FIG. 12 and processing for displaying an image according to the layout designated for printing is performed.

  First, in step S70, the storage client 503 stores the image data acquired from the storage server 504 in a cache memory having a configuration described later (see FIGS. 27A and 27B). In the cache memory, an image for the maximum value of the layout 4704 corresponding to the liquid crystal projector 100 or an image ID can be stored.

  In subsequent steps S71 and S72, the same processes as those in steps S51 and S52 of FIG. 17 described in the first embodiment are performed.

  In the subsequent step S73, the storage client 503 obtains the paper size information designated for printing, and determines whether or not the paper size includes Exif information. If it is the paper size with Exif information, the process advances to step S74, and the storage client 503 acquires Exif information shown in FIG. 28 to be described later from all the acquired images, and advances to step S75. If the paper size is not with Exif information, step S74 is skipped and the process proceeds to step S75.

  In step S75, the storage client 503 acquires file name information designated for printing, and determines whether or not to print the file name. When printing the file name, the process proceeds to step S76, and the storage client 503 acquires the file names of all acquired images from the cache memory, and then proceeds to step S77. If the file name is not printed, step S76 is skipped and the process proceeds to step S77.

  In step S77, the storage client 503 acquires date information designated for printing, and determines whether to print the date. When printing the date, the process proceeds to step S78, and the storage client 503 acquires the dates of all acquired images from the cache memory, and then proceeds to step S79. If the date is not printed, the process skips step S78 and proceeds to step S79.

  In step S79, the print device uses the acquired image, paper size, file name, and date information to display according to the designated layout. As a result, when a layout for displaying a plurality of sheets is designated from the print client 502, it is possible to display information about Exif information, file names, and dates regarding all images.

  27A and 27B are structural diagrams of the cache memory shown in FIG.

  In FIG. 27A, the cache memory 5200 can store an image of the maximum value 4402 of the layout 4204 supported by the liquid crystal projector 100 together with the file name 5201 and the date 5202. For example, since the maximum value of the layout 4204 is 20 UP, 20 images can be stored. In FIG. 27A, reference numeral 4404 denotes a pointer of the latest image, and the print device acquires an image of the print layout portion 4406 designated from the digital camera 200. A file name 5201 is file name information of print settings received by the print server 501. Date 5202 is date information of print settings received by the print server 501.

  On the other hand, as shown in FIG. 27B, a cache memory 5210 for storing the image ID may be prepared instead of storing the image itself. The cache memory 5210 can store an image of the maximum value 4402 of the layout 4204 supported by the liquid crystal projector 100 together with the file name 5201 and the date 5202. For example, since the maximum value of the layout 4204 is 20 UP, 20 images can be stored. Reference numeral 4414 in FIG. 27B denotes a pointer of the latest image ID. When the storage client 503 receives from the storage server 504 the image of the print layout portion 4416 designated from the digital camera 200, the print device get.

<Example of screen display layout>
Next, a screen layout when the liquid crystal projector 100 displays an image according to the second embodiment will be described with reference to FIGS. 28 and 29. FIG.

  FIG. 28 and FIG. 29 are layout diagrams illustrating screen display examples when the liquid crystal projector 100 displays a print image in layout in the second embodiment.

  The layout of the screen on which the liquid crystal projector 100 displays each image when the paper size with Exif information is designated in the paper size 4702 of the Capability information management table shown in FIG. 5 will be described.

  In FIG. 28, reference numeral 5100 denotes a screen display when the screen resolution is normal (horizontal 5: vertical 4). When the signal format is “SXGA”, the resolution is x2 = 1280 dots and y2 = 1024 dots. Reference numeral 5100 denotes a screen display when the print size is designated as 8 "x10" with Exif information, the layout is borderless, the file name is printed, and the date is printed. An image, Exif information 5101, a file name 5102, and a date 5103 are displayed. If the file name is not printed, the file name 5102 is not displayed. If the date is not printed, the date 5103 is not displayed.

  In FIG. 28, 5110 and 5111 are screen displays when the screen resolution is full screen (horizontal 4: vertical 3). When the signal format is “SXGA +”, the resolution is x1 = 1400 dots and y1 = 1050 dots. Reference numeral 5110 denotes a screen display when printing is designated with the letter size as Exif information, the layout is borderless, the file name is printed, and the date is printed. An image, Exif information 5112, a file name 5113, and a date 5114 are displayed. If the file name is not printed, the file name 5113 is not displayed. If the date is not printed, the date 5114 is not displayed. Reference numeral 5111 denotes a screen display when the print size is designated with a letter size with Exif information, a layout of 2 UP, file name printing, and date printing. An image, Exif information 5115, a file name 5116, and a date 5117 are displayed. If the file name is not printed, the file name 5116 is not displayed. If the date is not printed, the date 5117 is not displayed.

  In FIG. 29, 5120, 5121, 5122 are screen displays when the screen resolution is wide (horizontal 16: vertical 9). When the signal format is “SXGA +” wide, the resolution is x3 = 1400 and y3 = 787.5 dots. Reference numeral 5120 denotes a screen display when the paper size is Wide with Exif information, the layout is borderless, the file name is printed, and the date is printed, and printing is designated. The image, Exif information 5123, the file name 5124, and the date 5125 are displayed. . If the file name is not printed, the file name 5124 is not displayed. If the date is not printed, the date 5125 is not displayed. Reference numeral 5121 denotes a screen display when the paper size is Wide with Exif information, the layout is 2 UP, file name printing is performed, and printing is specified with date printing, and an image, Exif information 5126, a file name 5128, and a date 5127 are displayed. If the file name is not printed, the file name 5128 is not displayed. If the date is not printed, the date 5127 is not displayed. Reference numeral 5122 denotes a screen display when the paper size is Wide with Exif information, the layout is 6 UP, file name printing is performed, and printing is performed with date printing, and an image, Exif information 5129, a file name 5130, and a date 5131 are displayed. If the file name is not printed, the file name 5130 is not displayed. If the date is not printed, the date 5131 is not displayed.

<Image resolution switching process>
FIG. 30 is a flowchart illustrating image resolution switching processing according to the second embodiment.

  When the user operates the remote controller 3500 or the like, in step S80, the system control circuit 109 switches the image resolution. In the next step S81, the print server 501 performs re-acquisition processing for capability information.

  In the next step S82, the print server 501 obtains the currently displayed layout information, and in the subsequent step S83, the print server 501 obtains Capability layout information associated with the resolution of the switched image.

  In the next step S84, the print server 501 determines whether the image is displayed with Exif information. If the image is displayed with Exif information, the process of step S85 is performed. If the image is displayed without the Exif information, the process of step S87 is performed.

  In step S85, the print server 501 determines whether or not the number of displayed layouts is present in the number of displayable layouts of the paper size with Exif information after switching. If present, the image display is not changed. If it does not exist (including the case where the paper size with Exif information does not exist), the print server 501 switches the image display so as to match the displayable layout of the paper size with Exif information after switching in step S86. . For example, assume that the screen resolution is wide (horizontal 16: vertical: 9), the paper size is Wide with Exif information, the layout is 2UP, and an image is being displayed. When switching from that state to full screen (horizontal 4: vertical 3), there is 2UP in the Letter layout with Exif information, so the image display is not changed. When switching from the above state to normal (horizontal 5: vertical 4), there is no 2UP in the layout of 8 "x10" with Exif information, so the image display is switched in a borderless layout.

  In step S87, the print server 501 determines whether or not the number of displayed layouts is present in the number of displayable layouts for the paper size without Exif information after switching. If it exists, the image display is not changed. If it does not exist (including the case where the paper size without Exif information does not exist), the print server 501 switches the image display to match the displayable layout of the paper size without Exif information after switching in step S88. For example, assume that the image is being displayed with a wide screen resolution (horizontal 16: vertical: 9), a paper size of Wide, and a layout of 2 UP. When switching from that state to full screen (horizontal 4: vertical 3), there is 2UP in the Letter layout, so the image display is not changed. Assume that the screen resolution is wide (horizontal 16: vertical: 9), the paper size is Wide, the layout is 6 UP, and an image is being displayed. When switching from the state to full screen (horizontal 4: vertical 3), there is no 6UP in the letter layout, so the image display is switched in the 4UP layout.

<Advantages of Second Embodiment>
According to the second embodiment, in a system in which the digital camera 200 and the liquid crystal projector 100 are connected by USB, an image held by the digital camera 200 is operated as follows by operating an operation member such as the remote controller 3500. It becomes possible. That is, the image information of Exif, date, and file name can be displayed in a layout suitable for the image resolution of the liquid crystal projector 100. As a result, it is possible to view information regarding the image desired by the user in the layout desired by the user. Further, when the screen display mode of the liquid crystal projector 100 is switched by operating the remote control 3500 of the liquid crystal projector 100, the digital camera 200 is notified that the resolution has been switched. The image and the image information can be displayed with a layout suitable for the resolution of the switched image.

  In addition, the objective of this invention is achieved by performing the following processes. That is, a storage medium recording software program codes for realizing the functions of the above-described embodiments is supplied to a system or apparatus, and a computer (or CPU, MPU, etc.) of the system or apparatus is stored in the storage medium. This is a process of reading the program code.

  In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the program code and the storage medium storing the program code constitute the present invention.

  Moreover, the following can be used as a storage medium for supplying the program code. For example, floppy (registered trademark) disk, hard disk, magneto-optical disk, CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD + RW, magnetic tape, nonvolatile memory card, ROM or the like. Alternatively, the program code may be downloaded via a network.

  Further, the present invention includes a case where the function of the above-described embodiment is realized by executing the program code read by the computer. In addition, an OS (operating system) running on the computer performs part or all of the actual processing based on the instruction of the program code, and the functions of the above-described embodiments are realized by the processing. Cases are also included.

  Furthermore, the present invention includes a case where the functions of the above-described embodiment are realized by the following processing. That is, the program code read from the storage medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer. Thereafter, based on the instruction of the program code, the CPU or the like provided in the function expansion board or function expansion unit performs part or all of the actual processing.

It is a schematic diagram which shows the structure of the image display system which concerns on embodiment. 1 is a block diagram showing an overall configuration of a liquid crystal projector used in an embodiment. FIG. 3 is an external view showing an example of a remote control of the liquid crystal projector shown in FIG. 2. FIG. 3 is a schematic diagram for explaining image resolution of the liquid crystal projector 100 shown in FIG. 2. It is a table figure which showed the Capability information management table in embodiment. It is a conceptual diagram which shows the folder structure of the recording medium mounted in the digital camera used for embodiment. It is the external view which showed the back surface of the digital camera used for embodiment. It is the conceptual diagram which showed the system model of DPS in embodiment. It is a description format figure which shows the example of the content of the DPS command which concerns on embodiment. It is a description format figure which shows the example of the content of the DPS command which concerns on embodiment. It is a description format figure which shows the example of the content of the DPS command which concerns on embodiment. It is a sequence diagram of a DPS command in the embodiment. It is a flowchart which shows the detail of a Capability information acquisition process. It is a sequence diagram which shows the detail of DPS Discovery. It is a sequence diagram which shows the sequence of a PTP command. It is a sequence diagram which shows the sequence in a PTP command level. It is a flowchart which shows the detail of the display process of the image based on 1st Embodiment. FIG. 18 is a structural diagram of the cache memory shown in FIG. 17. FIG. 6 is a layout diagram illustrating a screen display example when the liquid crystal projector displays a print image in a layout form in the first embodiment. FIG. 6 is a layout diagram illustrating a screen display example when the liquid crystal projector displays a print image in a layout form in the first embodiment. FIG. 6 is a layout diagram illustrating a screen display example when the liquid crystal projector displays a print image in a layout form in the first embodiment. 3 is a flowchart illustrating image resolution switching processing according to the first embodiment. It is a sequence diagram which shows the detail of Capability information reacquisition processing. FIG. 10 is a sequence diagram showing display switching processing for an image group designated for DPOF printing. It is the table figure which showed the Capability information management table in 2nd Embodiment. It is a flowchart which shows the detail of the display process of the image based on 2nd Embodiment. FIG. 27 is a structural diagram of the cache memory shown in FIG. 26. FIG. 10 is a layout diagram illustrating a screen display example when a liquid crystal projector displays a print image in a layout form in a second embodiment. FIG. 10 is a layout diagram illustrating a screen display example when a liquid crystal projector displays a print image in a layout form in a second embodiment. 12 is a flowchart illustrating image resolution switching processing according to the second embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Liquid crystal projector 102 Non-volatile memory 106 USB interface 109 System control circuit 117 Liquid crystal panel 120 Remote control light-receiving part 200 Digital camera 201 USB cable

Claims (7)

An image display device that communicates with an image supply device based on a communication protocol for printing,
Storage means for storing in association with any of the print condition display mode including the resolution and the layout of the screen,
Transmitting means for transmitting function information including printing conditions stored in the storage means in response to the start of communication with the image supply apparatus using the printing communication protocol;
Receiving means for receiving a job including printing conditions and image designation information from the image supply apparatus after transmitting the function information by the transmitting means;
It receives the image designated in the image designation information included in the job received, the image received and displayed at the resolution and layout of the screen corresponding to the printing conditions included in the job control And an image display device. 2. The image display apparatus according to claim 1, wherein there is means for setting a screen resolution, and function information to be sent is changed according to the setting. Based on the job image designation information, the image display apparatus according to claim 1 or 2, characterized in that to request the transfer of the image to be displayed. Said control means, the image display apparatus according to any one of claims 1 to 3, wherein the displaying each information of the image with the image. A control method for an image display device that communicates with an image supply device based on a communication protocol for printing,
A storage step of storing in the storage means in association with any of the print condition display mode including the resolution and the layout of the screen,
A transmission step of transmitting function information including printing conditions stored in the storage unit in response to the start of communication with the image supply device using the printing communication protocol;
A reception step of receiving a job including printing conditions and image designation information from the image supply device after transmitting the function information by the transmission step;
It receives the image designated in the image designation information included in the job received, the image received and displayed at the resolution and layout of the screen corresponding to the printing conditions included in the job control And a method for controlling the image display device. A storage medium storing a program for causing a computer to execute a control method of an image display device that communicates with an image supply device based on a communication protocol for printing,
The program is
A storing step of storing in the storage means in association with any of the print condition display mode including the resolution and the layout of the screen,
A transmission step of transmitting function information including printing conditions stored in the storage unit in response to the start of communication with the image supply device using the printing communication protocol;
A reception step of receiving a job including printing conditions and image designation information from the image supply device after transmitting the function information in the transmission step;
It receives the image designated in the image designation information included in the job received, the image received and displayed at the resolution and layout of the screen corresponding to the printing conditions included in the job control And a storage medium. An image display system comprising: an image supply device that supplies an image; and an image display device that communicates with the image supply device based on a printing communication protocol and receives and displays an image from the image supply device.
The image display device includes:
Storage means for storing in association with any of the print condition display mode including the resolution and the layout of the screen,
Transmitting means for transmitting function information including printing conditions stored in the storage means in response to the start of communication with the image supply apparatus using the printing communication protocol;
Receiving means for receiving a job including printing conditions and image designation information from the image supply apparatus after transmitting the function information by the sending means;
It receives the image designated in the image designation information included in the job received, the image received and displayed at the resolution and layout of the screen corresponding to the printing conditions included in the job control And an image display system.