JP2003134334A - Image size conversion apparatus, image input/output apparatus, image size conversion method, storage medium and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image size conversion apparatus, an image input/output apparatus, an image size conversion method, a recording medium and a program which solves the conventional disadvantage that the display power of an image display means attached to a line connection apparatus is generally inferior to the power of the image display means of an image input/output apparatus, resulting in that the entire image is not displayed. SOLUTION: A digital camera control means 501 receives attribute information showing the image display power of an image display means attached to a portable telephone from this telephone via an antenna 513, an image size changing means 516 changes photographed image data to an image size according to the received attribute information, and a means controls to send the image size-converted image data to the portable telephone via the antenna 513 upon receipt of an image sending request from the portable telephone.

Description

Detailed Description of the Invention

[0001]

The present invention relates to an image size conversion device, an image input / output device, an image size conversion method, a storage medium,
And a program, in particular, an image input / output device having a function of converting a captured image into an electric signal and capturing as digital data and a local communication function, and a line connection having a wireless local communication function and a public line connection function. In the device, by instructing the line connection device using the local communication function of the image input / output device, it is suitable for communication control when image data is transferred to the public line network by the public line connection function of the line connection device. The present invention relates to an image size conversion device, an image input / output device, an image size conversion method, a storage medium, and a program.

[0002]

2. Description of the Related Art With the recent spread of the Internet, it has become possible to easily obtain information by exchanging electronic mail (e-mail) and accessing the Web, and a personal computer (hereinafter referred to as a PC) having a public line connection function has rapidly spread. Is progressing to. Similarly, in mobile wireless telephones as well, the wireless lines will be digitized so that digital wireless telephones represented by PHS (Personal Handy Phone System) and mobile telephones can realize a character mail function and a simple Web browser function. It has become. Furthermore, recently, telephone services, etc., which support the Internet standard protocol, have been put on the market and have been installed in PCs.
A digital wireless telephone having a function similar to a mail function or a Web access function is expected to spread.

A lot of image data is handled in this e-mail and the Web, and an image is transferred from a scanner or a digital still camera (hereinafter referred to as a digital camera) into a PC and then transferred by attaching an e-mail. It is common to upload to the website or #. Conventionally, a dedicated digital interface or USB (Universal Serial Bus) was used for this image capture, but to eliminate the hassle of cable connection, data is now wirelessly transmitted locally instead of the cable. A local wireless interface system to be used is being studied, and practical application is imminent.

[0004]

However, the above-mentioned conventional example has the following problems. That is, in the above-mentioned conventional example, when image data is taken from a digital camera or other image input / output device into a line connection device such as a PC or a mobile phone having a public line connection function, and then the image data is transferred to a desired location. However, there is a problem in that it is necessary to operate both the image input / output device and the line connection device, which requires the operator to perform a troublesome operation.

Further, when image data is transmitted from the image input / output device to a line connection device having a public connection connection function as a communication partner, the image display means of the image input / output device and the image display means of the line connection device. Although the image data transmitted from the image input / output device to the line connection device can be received by the line connection device due to the difference in the image display capabilities of the image connection means, the display capability of the image display means of the line connection device is generally image input / output. Since it is inferior to the capability of the image display means of the device, there is a disadvantage that not all images are displayed.

At this time, in the line connection device, the image data received from the image input / output device is temporarily stored in the built-in storage section, and only the image data matching the display capability of the image display means of the line connection device is line connected. There is no choice but to use a method of displaying all the images in a divided manner, such as displaying them on the image display means of the device and displaying the rest of the undisplayed image data by scrolling or the like in the image display means of the line connection device. In such a case, since the line connection device divides and displays the image received from the image input / output device, it is difficult to see the image on the image display means, or it takes time to scroll the image on the image display means. The inconvenience occurs.

The present invention has been made in view of the above-mentioned points, and all images are displayed because the display capability of the image display means of the line connection device is generally inferior to that of the image display means of the image input / output device. An image size conversion device, an image input / output device, an image size conversion method, a storage medium, which makes it possible to eliminate the conventional inconvenience of not being displayed.
And the primary purpose is to provide a program.

Further, the present invention has been made in view of the above-mentioned points, and an image size conversion device, an image input / output device, an image size conversion which does not require the conventional method of displaying all images in a divided manner. A second object is to provide a method, a storage medium, and a program.

[0009]

In order to achieve the above object, the present invention is an image size conversion device capable of communicating with a line connection device for data transfer via a public network, the image size conversion device comprising: Receiving means for receiving attribute information indicating the image display capability of the image display means included in the line connection device, and image size converting means for converting image data into an image size according to the attribute information received by the receiving means,
And a transmission unit that transmits the image data whose image size has been converted by the image size conversion unit in response to an image transmission request from the line connection device.

Further, the present invention is an image input / output device capable of communicating with a line connection device for transferring data via a public network, wherein the image display means displays an image from the line connection device. Receiving means for receiving attribute information indicating ability, image size converting means for converting image data into an image size according to the attribute information received by the receiving means, and image size-converted by the image size converting means And a transmission means for transmitting data in response to an image transmission request from the line connection device.

The present invention is also an image size conversion method executed by an image input / output device capable of communicating with a line connection device for data transfer via a public network, the line connection device changing from the line connection device to the line connection device. A reception step of receiving attribute information indicating the image display capability of the image display means included in the image display means, an image size conversion step of converting image data into an image size according to the attribute information received in the reception step, and the image size conversion. And a transmission step of transmitting the image data whose image size has been converted in the step in response to an image transmission request from the line connection device.

The present invention also provides a storage medium for storing a program supplied to an image input / output device capable of communicating with a line connection device for data transfer via a public network, the line connection device connecting the line to the line. A receiving step of receiving attribute information indicating an image display capability of an image display means included in the connection device; an image size converting step of converting image data into an image size according to the attribute information received in the receiving step; And a transmission step of transmitting the image data whose image size has been converted in the size conversion step in response to an image transmission request from the line connection device.

Further, the present invention is a program to be supplied to an image input / output device capable of communicating with a line connection device for data transfer via a public network, the image being provided from the line connection device to the line connection device. A receiving step of receiving attribute information indicating the image display capability of the display means, an image size converting step of converting the image data into an image size according to the attribute information received in the receiving step, and an image in the image size converting step. And a transmission step of transmitting the size-converted image data in response to an image transmission request from the line connection device.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the outline of the present invention will be described.
The present invention improves the problem of image display on the line connection device due to the difference between the display screen size of the image input / output device and the display screen size of the line connection device. In the embodiments of the present invention, a digital camera is assumed as the image input / output device, but the image input / output device is not limited to the digital camera, and means for temporarily saving or saving image data as digital data and a means for saving the image data. PDA (Pe
rsonal Digital Assistant) etc. can also be applied. Although a mobile phone is assumed as the line connection device, the line connection device is not limited to the mobile phone and can be applied to a personal computer or the like. Less than,
Embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 2 is a conceptual diagram showing a configuration example of a system including an image input / output device and a line connection device according to the embodiment of the present invention. In FIG. 2, the image input / output device 101
Is a device implementing the present invention, which is a digital camera in the present embodiment, and has a local communication function for performing local communication with the line connection device 102. The line connection device 102 is a device that implements the present invention, is a mobile phone in the present embodiment, has an e-mail transmission / reception function of transmitting and receiving e-mail via the public network 103, and communicates with the image input / output device 101. It has a local communication function for local communication. Hereinafter, the image input / output device will be referred to as a digital camera, and the line connection device will be referred to as a mobile phone.

FIG. 3 is a view showing the outer appearance of the digital camera. In FIG. 3, reference numeral 201 denotes a digital camera body. A display unit 202 is used for confirming a subject to be photographed and a photographed image, and for displaying a communication setting menu and the like. Reference numeral 203 denotes an operation switch for operating the digital camera, such as switching reproduced images and selecting a key input on the software keyboard. 204
Is a local communication mode changeover switch for displaying a local communication mode menu. In the following description, the digital camera reference numeral will be 101.

FIG. 4 shows the display unit 20 of the digital camera 101.
It is a figure which shows the operation screen displayed on 2. In FIG. 4, reference numeral 301 denotes a local communication mode changeover switch 2
The initial screen of the local communication mode when 04 is pressed first is shown. Reference numeral 302 denotes a function list display screen supported in the local communication mode when the function list is selected from the menu on the initial screen of the local communication mode. When the image data transfer by line connection or file transfer is selected in the local communication mode 303,
The image selection display screen for selecting the image data to be transferred is shown, and in the present embodiment, the image selection screen after the line connection operation is finished is shown. 304 is an image selection display screen 30
3 shows an operation instruction menu display screen for selecting the next operation after completion of the image selection operation in 3. Reference numeral 305 denotes a terminal search operation result display screen when terminal search is selected on the operation instruction menu display screen 304.

FIG. 1 is a schematic block diagram showing the configuration of the digital camera 101. In FIG. 1, the digital camera 101 includes a control unit 50 having an image processing unit 508.
1, lens control means 502, external display control means 503,
Liquid crystal display means 504, switch sense means 505, electronic dial 506, LCD (Liquid Crystal Display) monitor means 507, solid-state image sensor (CCD (Charge Coupl)
ed Device)) 509, first storage means 510, shutter control means 511, RF (Radio Frequency) signal generation means 512, antenna 513, transmission switching means 514,
The second storage unit 515 and the image size conversion unit 516 are provided.

The control means 501 controls each part of the digital camera, and executes the processes shown in the flowcharts of FIGS. 5 to 9 based on a program built in the digital camera or a program supplied from the outside of the digital camera. The lens control unit 502 controls lens driving during communication between the digital camera body and the photographing lens. The external display control means 503 controls display on the liquid crystal display means 504. Liquid crystal display means 504 (display unit 20 of FIG. 3
2) displays an image and corresponds to the image display means of the present invention. The switch sensing means 505 has a function of transmitting signals of a large number of switches including an electronic dial 506 provided in the digital camera to the control means 501. The shutter control unit 511 appropriately exposes the solid-state image sensor (CCD) 509.

The LCD monitor means 507 provides a monitor display. The first storage unit 510 is the image processing unit 50.
Image data is recorded under the control of 8. The second storage unit 515 stores the later-described attribute information received from the mobile phone. The image processing unit 508 temporarily stores image data based on shooting in a buffer, performs necessary processing on the image data and stores the image data in the first storage unit 510, and LC.
Control such as displaying an image on the D monitor means 507 is performed. The RF signal generation means 512 generates an RF signal for radiating the image signal of the first storage means 510, which stores the captured image, as a radio wave into the air. The antenna 513 is for efficiently radiating the RF signal output from the RF signal generator 512 into the air.

The transmission switching means 514 starts the operation of sending the image signal recorded in the first storage means 510 to the RF signal generating means 512. By switching the transmission switching means 514, the first storage means 51
The image signal recorded at 0 is converted into an RF signal and radiated into the air via the antenna 513. The image size conversion unit 516 converts the size of the captured image into a size according to the attribute information received from the mobile phone. Note that the attribute information is information indicating the display capability of the image display means of the mobile phone, for example, information such as the display screen size of the image display means, the resolution data of the image display means, and the number of displayable pixels of the image display means. Is included.

Next, the internal operation of the digital camera 101 configured as described above will be described in detail with reference to FIGS. 5 and 6 are flowcharts showing the main processing of the digital camera 101 in the local communication mode, FIG. 7 is a flowchart showing a subroutine of the local communication operation, FIG. 8 is a flowchart showing a subroutine of the image selecting operation, and FIG. 9 is an image size. It is a flowchart which shows the subroutine of a conversion operation. The control unit 501 of the digital camera 101 executes the processing shown in each flowchart based on a program.

In FIGS. 5 and 6, the operator selects the local communication mode changeover switch 20 of the digital camera 101.
When 4 is pressed, the digital camera 101 shifts to the local communication mode (step S401), and the digital camera 10
Local communication mode initial screen 301 on the display unit 202 of No. 1
Is displayed (step S402). When the operator operates the operation switch 203 to select a function list display that can be used in the local communication mode from the menu (function list display, communication function display, service search, setting, end) on the local communication mode initial screen 301 (step S40
4), the function list display screen 302 usable in the local communication mode is displayed on the display unit 202 (step S40).
5).

When the operator selects, for example, line connection selection from the function list display screen 302 (step S407),
The process proceeds to an e-mail attachment instruction process for instructing to attach image data to an e-mail (step 408), and the selection information selected in step S407 is temporarily stored in the digital camera 101. The selection information is transferred to the digital camera 101.
When the image is temporarily stored in step S40, the process proceeds to the image selection operation of FIG. 8 for selecting the image to be transferred next (step S40).
9).

In FIG. 8, in the image selecting operation, first, when the image selecting operation process is started (step S409),
The digital camera 101 shifts to the process of acquiring the image data file list (step 450), and from the medium (first storage means 510) storing the image data,
Acquire information on all stored image data files. Then, it is determined from the number of acquired image data file lists whether all thumbnail images can be displayed on the display unit 202 (step S451). If it is determined that the number of stored images is small and all the image files can be displayed on one screen, all the stored thumbnail images are acquired (step S452). On the other hand, when it is determined that the saved image file cannot be displayed on one screen, the display page information is calculated from the number of remaining image files after the displayable number of image data is acquired (step S454), and the display is performed. The page information is stored (step 455).

When the acquisition of the thumbnail image data to be displayed on the display unit 202 is completed, the image selection screen is displayed on the display unit 202 in the selection screen display process (step 45).
3). Next, when the operator operates the operation switch 203 to select the image number of the thumbnail image or the thumbnail image displayed on the display unit 202 and perform the file registration operation (step S456), the selected image is internally displayed in the digital camera. The file name of is stored as registration data (step S458). If the operator wants to select a plurality of images, the steps S456 and S458 are repeated to register a plurality of pieces of selected image information. When the series of registration operations is completed and the operator selects the end of image selection (step S457), the process returns to the processing of FIGS. 5 and 6 (step S459).

Returning to FIGS. 5 and 6, the digital camera 101
Saves the registered selected image information as a file in the internal memory of the control unit 901 or a recording medium (a medium such as a memory card removable from the digital camera 101) for storing image data, and displays it in the confirmation screen display process. The operation instruction menu display screen 304 in the section 202
Is displayed (step 410). Next, when the operator selects the terminal search on the operation instruction menu display screen 304 (step S412), the digital camera 101 shifts to the terminal search operation (step S413), and the local communication terminal within the communication range with the digital camera 101. To the local communication terminal that has received the response signal, the operator selects an arbitrary local communication terminal (for example, a mobile phone) (step S41).
4). When a local communication terminal is selected and a connection is instructed (step S414), the process moves to the local communication operation of FIG. 7 (step S415).

In FIG. 7, when the digital camera 101 shifts to the processing of the local communication operation of step S415 (step S415), the mobile phone 102 waits for attribute information indicating the display capability of the image display means of the mobile phone 102. Next (step S480), the process waits until the attribute information is received from the mobile phone 102. The attribute information includes information indicating the display capability of the image display unit of the mobile phone 102, such as the display screen size of the image display unit, the resolution data of the image display unit, and the number of displayable pixels of the image display unit. Be done. The mobile phone 10
The attribute information received from No. 2 is stored in the second storage unit 515. Next, the display screen size of the image display means of the digital camera 101 and the display screen size of the image display means of the mobile phone 102 are compared based on the received attribute information of the image display means of the mobile phone 102 (step S48).
1).

When the display screen size of the mobile phone 102 is larger than the display screen size of the digital camera 101, the image list information of the digital camera 101 is transmitted to the mobile phone 102 in that state. On the other hand, the mobile phone 10
When the display screen size of 2 is smaller than the display screen size of the digital camera 101, the stored image data in the digital camera 101 is stored in the mobile phone 102.
The image size conversion of the desired image data of FIG. 9 is performed based on the attribute information of the image display means from step S48 (step S48).
2).

In FIG. 9, when the digital camera 101 shifts to the image size conversion operation (step S482),
The attribute information received from the mobile phone 102 is analyzed (step S430), and calculation for image size conversion is performed based on the analysis result of the attribute information (step S431). Next, the image file is read (step S43
2) The image data expansion operation of the read image file is performed (step S433). After the image size conversion processing of the expanded image data is performed (step S43)
4), the image data subjected to the image size conversion processing is subjected to the image data compression operation (step S435), the image file is stored (step S436), and the process returns to the processing of FIG. 7 (step S437).

Returning to FIG. 7, when the image size conversion is completed (step S482), the digital camera 101 converts the image data converted into the desired image size into the first storage means 51.
It is stored in 0 (step S483). After that, the digital camera 101 transmits the image list information of the owned images to the mobile phone 102 (step S484). Subsequently, the digital camera 101 is in a standby state during the image transmission request from the mobile phone 102 (step S
485), and waits until an image transmission request is received (step S486). When the image transmission request is received from the mobile phone 102, the request type is determined (step S487).

When the request type is an image request, the image data stored in the first storage means 510 is stored in the mobile phone 10.
2 (step S488). On the other hand, when the request type is the thumbnail image request, the first storage unit 510
The thumbnail image data stored in
(Step S489), the process returns to step S486 and waits again for the reception of the image transmission request from the mobile phone 102. After this, the process returns to the process of FIGS. 5 and 6 (step S4
90).

Returning to FIGS. 5 and 6, the digital camera 101
Determines whether the transmission of the image data requested by the mobile phone 102 to the mobile phone 102 is completed (step S416). Image data mobile phone 102
When the transmission to the terminal is completed, the line disconnection operation is performed (step S417), and this processing is ended (step S41).
8), the local communication mode initial screen 30 is displayed on the display unit 202.
1 is displayed, and the series of operations described above is completed.

As described above, according to the embodiment of the present invention, the following actions and effects are exhibited. The captured image data captured by the solid-state image sensor 509 of the digital camera is stored in the first storage unit 510 and displayed on the liquid crystal display unit 504. Attribute information indicating the display capability of the image display means of the mobile phone from the digital camera to the mobile phone when communication is established after a series of communication procedures such as a call request from the digital camera to the mobile phone To send to the digital camera. The mobile phone transmits the attribute information indicating the current display capability of the image display means of itself to the digital camera through the transmitting means.

The digital camera receives the attribute information from the mobile phone via the receiving means, and temporarily stores the attribute information from the mobile phone in the second storage means 515. The digital camera receives the image data captured by the solid-state image sensor 509 and stored in the first storage unit 510 based on the attribute information received from the mobile phone and stored in the second storage unit 515. After the conversion, the image size-converted image data is transmitted to the mobile phone via the transmitting means. The mobile phone receives the image size-converted image data received from the digital camera via the receiving means, and displays it on the image display means as an appropriate image size of the image display means of the mobile phone.

That is, in the digital camera, the photographed image data is converted into a desired image size and transmitted to the mobile phone based on the attribute information indicating the display capability of the image display means of the mobile phone transmitted from the mobile phone. Therefore, although the image data transmitted from the digital camera can be received by the mobile phone due to the difference in image display capability between the image display means of the digital camera and the image display means of the mobile phone, the display of the image display means of the mobile phone is displayed. Since the capability is generally inferior to the capability of the image display means of the digital camera, the conventional inconvenience that the whole image is not displayed can be solved.

Further, only the image data corresponding to the display capability of the image display means of the mobile phone is displayed on the image display means of the mobile phone, and the remaining undisplayed image data is scrolled on the image display means of the mobile phone. As a result, there is no need to use a conventional method of displaying all images in a divided manner, such as displaying.

[Other Embodiments] In the above embodiment, the attribute information indicating the display capability of the image display means of the mobile phone is transferred from the mobile phone to the digital camera when communication is established between the digital camera and the mobile phone. Then, the digital camera converted the image size of the image data based on the attribute information and sent the image size-converted image data to the mobile phone, but communication was established between the digital camera and the mobile phone. From the digital camera,
By transmitting attribute information such as the image size of the image data of the digital camera to the mobile phone, and converting the image size of the image data based on the attribute information such as the image size on the mobile phone side, Image data may be displayed.

In the above embodiment, when the image size conversion of the image data transmitted from the digital camera to the mobile phone is performed, a plurality of attribute information such as the display screen size of the image display means of the mobile phone, the resolution data, the number of displayable pixels, etc. Of
The image size conversion may be performed based on a combination of arbitrary two or more attribute information.

In the above embodiment, the liquid crystal display means and the LCD monitor means are separately provided in the digital camera, but the liquid crystal display means and the LCD monitor means may be integrated.

The present invention may be applied to a system composed of a plurality of devices or an apparatus composed of a single device. A medium such as a storage medium that stores a program code of software that realizes the functions of the above-described embodiments is supplied to a system or apparatus, and the computer (or CPU or MPU) of the system or apparatus stores the medium in the medium such as the storage medium. It goes without saying that the present invention can also be achieved by reading and executing the executed program code.

In this case, the program code itself read from the medium such as the storage medium realizes the functions of the above-described embodiments, and the medium such as the storage medium storing the program code constitutes the present invention. It will be. As a medium such as a storage medium for supplying the program code, for example, a floppy (registered trademark) disk, a hard disk, an optical disk, a magneto-optical disk, a CD-RO.
M, CD-R, magnetic tape, non-volatile memory card,
ROM or download via a network can be used.

Further, not only the functions of the above-described embodiment are realized by executing the program code read by the computer, but also the OS or the like running on the computer is actually executed based on the instruction of the program code. Needless to say, the present invention includes a case where a part or all of the processing of (1) is performed and the functions of the above-described embodiments are realized by the processing.

Further, after the program code read from a medium such as a storage medium is written in a memory provided in a function expansion board inserted in the computer or a function expansion unit connected to the computer, the instruction of the program code is given. Based on the above, a case where a CPU or the like included in the function expansion board or the function expansion unit performs a part or all of actual processing and the processing realizes the functions of the above-described embodiments is not included in the present invention. Needless to say.

[0045]

As described above, according to the present invention,
In the image input / output device, the photographed image data is converted into a desired image size based on the attribute information indicating the display capability of the image display means of the line connection device transmitted from the line connection device and transmitted to the line connection device. Therefore, although the image data transmitted from the image input / output device can be received by the line connection device due to the difference in image display capability between the image display means of the image input / output device and the image display means of the line connection device, the line connection device can be received. Since the display capability of the image display means included in the above is generally inferior to that of the image display means of the image input / output device, it is possible to solve the conventional inconvenience of not displaying all images.

Further, according to the present invention, only the image data corresponding to the display capability of the image display means of the line connection device is displayed on the image display means of the line connection device, and the remaining image data not displayed is the line connection device. There is an effect that it is not necessary to use a conventional method of dividing and displaying all images, such as displaying the image display means by scrolling or the like.

[Brief description of drawings]

FIG. 1 is a schematic block diagram showing a configuration of an image input / output device according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram showing a configuration of a system including an image input / output device and a line connection device.

FIG. 3 is a diagram showing an appearance of an image input / output device.

FIG. 4 is a diagram showing an operation screen of the image input / output device.

FIG. 5 is a flowchart showing a main process of the image input / output device in a local communication mode.

FIG. 6 is a flowchart showing a main process of the image input / output device in a local communication mode.

FIG. 7 is a flowchart showing a subroutine of local communication operation.

FIG. 8 is a flowchart showing a subroutine of an image selection operation.

FIG. 9 is a flowchart showing a subroutine of an image size conversion operation.

[Explanation of symbols]

101 image input / output device 102 Line connection device 103 public network 501 control means (reception means, transmission means) 504 Liquid crystal display means (image display means) 510 First Storage Means 513 Antenna (reception means, transmission means) 515 Second storage means 516 Image size conversion means

Continued front page    F term (reference) 5C022 AA12 AA13 AC03 AC22 AC32                       AC42                 5C062 AA01 AA12 AA29 AA30 AA37                       AB23 AB38 AB40 AC24 AC43                       AE01 AE15 AF11 BB03 BD09                 5C075 AB06 CA06 CA14 FF02 FF90                 5C076 AA21 AA22 CB03                 5K067 BB04 BB21 DD52 EE03 HH21

Claims (24)

[Claims] 1. An image size conversion device capable of communicating with a line connection device for data transfer via a public network, the attribute indicating the image display capability of the image display means provided in the line connection device from the line connection device. Receiving means for receiving information, image size converting means for converting image data into an image size according to the attribute information received by the receiving means, and image data for which image size conversion is performed by the image size converting means on the line. An image size conversion device, comprising: a transmission unit that transmits in response to an image transmission request from a connection device. 2. The attribute information of the line connection device is
The image size conversion device according to claim 1, wherein the information is information including a display screen size, a resolution, and a displayable pixel number of the image display means included in the line connection device. 3. The image size conversion means performs the image size conversion when the display screen size of the image display means included in the line connection device is smaller than a predetermined display screen size. 1. The image size conversion device described in 1. 4. The line connection device includes a communication terminal such as a mobile phone and an information processing device such as a personal computer, and the image size conversion device is an image size conversion device installed in an imaging device such as a digital camera. Device, PDA
The image size conversion device according to claim 1, further comprising an image size conversion device mounted on a portable information terminal such as (Personal Digital Assistant). 5. An image input / output device capable of communicating with a line connection device for data transfer via a public network, the attribute indicating the image display capability of the image display means provided in the line connection device from the line connection device. Receiving means for receiving information, image size converting means for converting image data into an image size according to the attribute information received by the receiving means, and image data for which image size conversion is performed by the image size converting means on the line. An image input / output device comprising: a transmission unit that transmits in response to an image transmission request from a connection device. 6. The attribute information of the line connection device,
The image input / output device according to claim 5, which is information including a display screen size, a resolution, and a displayable pixel number of the image display means included in the line connection device. 7. The image size conversion means, if the display screen size of the image display means of the line connection device is smaller than the display screen size of the image display means of the image input / output device. The image input / output device according to claim 5, wherein size conversion is performed. 8. The image input / output device can transmit attribute information such as an image size of image data to the line connection device, and the line connection device can perform image size conversion based on the attribute information. The image input / output device according to claim 5, wherein 9. The line connection device includes a communication terminal such as a mobile phone and an information processing device such as a personal computer, and the image input / output device includes an imaging device such as a digital camera and a PDA (Personal Digital Assistant). 9. The image input / output device according to claim 5, wherein the image input / output device includes a portable information terminal such as the above. 10. An image size conversion method executed by an image input / output device capable of communicating with a line connection device that performs data transfer via a public network, comprising: displaying an image from the line connection device in the line connection device. A receiving step of receiving attribute information indicating the image display capability of the means, an image size converting step of converting the image data into an image size according to the attribute information received in the receiving step, and an image size in the image size converting step. And a transmitting step of transmitting the converted image data in response to an image transmission request from the line connection device. 11. The attribute information of the line connection device is information including a display screen size, a resolution, and a displayable pixel number of the image display means included in the line connection device. Image size conversion method described. 12. In the image size conversion step, the image is displayed when the display screen size of the image display means included in the line connection device is smaller than the display screen size of the image display means included in the image input / output device. The image size conversion method according to claim 10, wherein size conversion is performed. 13. The attribute information such as the image size of image data is transmitted from the image input / output device to the line connection device,
The image size conversion can be performed on the side of the line connection device based on the attribute information.
The image size conversion method described in 0. 14. The line connection device includes a communication terminal such as a mobile phone and an information processing device such as a personal computer, and the image input / output device includes an imaging device such as a digital camera and a PDA (Personal Digital Assistant). 10. A mobile information terminal such as the above is included.
The image size conversion method according to any one of 3 above. 15. A storage medium for storing a program supplied to an image input / output device capable of communicating with a line connection device that transfers data via a public network, the line connection device including the program. A reception step of receiving attribute information indicating the image display capability of the image display means, an image size conversion step of converting image data into an image size according to the attribute information received in the reception step, and the image size conversion step. A storage medium storing a program having a transmission step of transmitting the image data whose image size has been converted according to an image transmission request from the line connection device. 16. The attribute information of the line connection device is information including a display screen size, a resolution, and a displayable pixel number of the image display means included in the line connection device. The storage medium described. 17. In the image size conversion step, the image is displayed when the display screen size of the image display means included in the line connection device is smaller than the display screen size of the image display means included in the image input / output device. The storage medium according to claim 15, wherein size conversion is performed. 18. Attribute information such as an image size of image data is transmitted from the image input / output device to the line connection device,
The storage medium according to claim 15, wherein the line connection device stores the program having a step of performing image size conversion based on the attribute information instead of the image input / output device. 19. The line connection device includes a communication terminal such as a mobile phone and an information processing device such as a personal computer, and the image input / output device includes an imaging device such as a digital camera and a PDA (Personal Digital Assistant). 15. A portable information terminal such as the above is included.
8. The storage medium according to any one of 8. 20. A program supplied to an image input / output device communicable with a line connection device for performing data transfer via a public network, the image being displayed by an image display means provided in the line connection device from the line connection device. The receiving step of receiving the attribute information indicating the display capability, the image size converting step of converting the image data into the image size according to the attribute information received in the receiving step, and the image size converted in the image size converting step A transmission step of transmitting image data in response to an image transmission request from the line connection device. 21. The attribute information of the line connection device is information including a display screen size, a resolution, and a displayable pixel number of the image display means included in the line connection device. The listed program. 22. In the image size conversion step, if the display screen size of the image display means included in the line connection device is smaller than the display screen size of the image display means included in the image input / output device, the image 21. The program according to claim 20, wherein size conversion is performed. 23. The image input / output device transmits attribute information such as an image size of image data to the line connection device,
21. The program according to claim 20, further comprising a step of performing image size conversion on the side of the line connection device based on the attribute information instead of the image input / output device. 24. The line connection device includes a communication terminal such as a mobile phone and an information processing device such as a personal computer, and the image input / output device includes an imaging device such as a digital camera and a PDA (Personal Digital Assistant). 20. A mobile information terminal such as
The program according to any one of 3 above.