JP2004240775A - Data exchange device, data exchange method and data exchange program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize efficient data exchange without unnecessary information addition to image data, in data exchange of data converted to an image. <P>SOLUTION: A data file stored on a PC 1 is first image-converted to an image size and an image format savable in a cellular telephone 3, and in the process, an identifier indicating the type of the data file is embedded in the image file data. The image file thus generated is saved in the cellular telephone 3 in the same manner as a general standby image. The image file is then read out from the cellular telephone 3 to a PC 2 as a data conversion destination, wherein the original data file is restored from the image file according to the presence of the identifier. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to, for example, a data exchange device, a data exchange method, and a data exchange program.
[0002]
[Prior art]
In recent years, external storage devices for personal computers (PCs) have been diversified. The external storage device includes a product such as a floppy (registered trademark) disk, a CD-R, a recording DVD, an external HDD, which requires a drive mechanism for reading / writing data, and a USB connection using a semiconductor memory. There are memories and the like, which are generalized.
[0003]
Since the above-mentioned external storage device is a storage medium dedicated to storage, it is not premised that the external storage device is used for purposes other than storage, and the storage capacity, size, and shape are various. In the case of a storage medium such as a floppy (registered trademark) disk, a CD-R, or a recording DVD, the size is smaller than that of an external HDD or the like, but there is a problem that the storage medium is bulky when housed in a portable bag, for example. Was.
[0004]
[Problems to be solved by the invention]
Therefore, paying particular attention to a mobile phone that has a high penetration rate, the mobile phone is carried as a tool for communication regardless of the gender and age of the user regardless of the place. This mobile phone has a function of storing image data constituting a standby screen.
[0005]
Therefore, the present inventor paid attention to a mobile phone intended to be carried, and also paid attention to a point that the mobile phone has a function as a storage medium. In the future, expectations are growing for realizing a function of exchanging data between PCs using a mobile phone.
[0006]
An object of the present invention is to provide a data exchange device, a data exchange method, and a data exchange program that can realize efficient data exchange without adding unnecessary information to image data when data exchange is performed using a portable terminal. It is in.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems and achieve the above object, a data exchange device according to the present invention is a data exchange device, wherein a storage unit that stores a plurality of types of image storage formats, When converting an original data file specified according to a plurality of stored image storage formats into an image file, an image conversion unit for embedding a predetermined identifier, and whether the predetermined identifier is embedded in the specified image file And a restoring means for restoring the image file converted by the image converting means to the original data file only when the judging means judges that the predetermined identifier is embedded. It is characterized by the following.
[0008]
A data exchange device according to a second aspect of the present invention is a data exchange device for exchanging data using a portable terminal, comprising: a connection unit for connecting to the portable terminal so as to be able to transmit and receive data; When transmitting data in response to, the conversion and transmission means for converting the original data prepared in advance to image data, and transmitting the converted image data to the portable terminal connected by the connection means, When receiving data in response to a user operation, receiving and restoring means for receiving image data from a portable terminal connected by the connection means and restoring the received image data to original data; It is characterized by having.
[0009]
In the invention according to claim 2, the conversion and transmission unit converts the original data into image data according to an image format that can be held in the mobile terminal, and the reception and restoration unit can hold the image data in the mobile terminal. The image data may be restored to the original data according to the image format.
[0010]
The invention according to claim 2, further comprising a storage unit for storing an image size and an image format handled by the mobile terminal in accordance with the type of the mobile terminal, wherein the conversion and transmission unit is stored in the storage unit. You may make it convert into an image size and an image format.
[0011]
In the invention of claim 2, the conversion and transmission unit embeds information indicating a type of the original data in the image data at the time of conversion, and the reception and restoration unit embeds information in the image data. The restoration may be performed according to the information indicating the type.
[0012]
In the invention of claim 2, the conversion and transmission unit divides the original data into a plurality of image files when the original data does not fit in one file of image data, and the reception and restoration unit When the image file is composed of one original data, the image data composed of the plurality of image files may be restored to the one original data.
[0013]
In the invention of claim 2, the conversion and transmission means embeds information indicating the presence or absence of division and the order of division at the time of conversion into the image data, and the reception and restoration means includes Restoration may be performed according to the embedded information indicating the presence / absence of the division and the order of division.
[0014]
Further, the data exchange method according to the invention of claim 8 is a data exchange method, wherein when converting an original data file specified according to a plurality of types of image storage formats stored in advance into an image file, a predetermined identifier is used. A first step of embedding, a second step of determining whether or not the predetermined identifier is embedded in a designated image file, and the second step of determining whether or not the predetermined identifier is embedded in the specified image file. A third step of restoring the image file converted in the first step to an original data file.
[0015]
A data exchange method according to a ninth aspect of the present invention is a data exchange method for exchanging data using a portable terminal, wherein a first step of connecting to the portable terminal so that data can be transmitted / received, When transmitting data in response to an operation, a second step of converting original data prepared in advance into image data and transmitting the converted image data to the portable terminal connected in the first step; A third step of receiving image data from the mobile terminal connected in the first step and restoring the received image data to the original data when receiving data in response to a user operation; It is characterized by including.
[0016]
In the invention according to claim 9, the second step converts the original data into image data according to an image format that can be held by the portable terminal, and the third step includes an image format that can be held by the portable terminal , The image data may be restored to the original data.
[0017]
According to the ninth aspect of the present invention, the image size and the image format handled by the mobile terminal are stored in advance corresponding to the type of the mobile terminal, and the second step converts the image size and the image format into the pre-stored image size and image format. You may make it.
[0018]
In the invention according to claim 9, the second step embeds information indicating a type of the original data in the image data at the time of conversion, and the third step includes the step of embedding the type embedded in the image data. May be restored in accordance with the information indicating.
[0019]
In the invention according to claim 9, in the second step, when the original data does not fit in the image data for one file, the original data is divided into a plurality of image files, and the third step is performed in the plurality of received image files. Is composed of one original data, the image data composed of the plurality of image files may be restored to the one original data.
[0020]
In the invention according to claim 9, the second step embeds information indicating the presence / absence of division and the order of division at the time of conversion in the image data, and the third step includes embedding information in the image data. The restoration may be performed according to the information indicating the presence or absence of the division and the order of the division.
[0021]
Further, a data exchange program according to the invention of claim 15 is a data exchange program executable by a computer, and stores, in the computer, an original data file specified according to a plurality of types of image storage formats stored in advance. A first step of embedding a predetermined identifier, a second step of determining whether the predetermined identifier is embedded in a designated image file, and embedding the predetermined identifier in the second step. And a third step of restoring the image file converted in the first step to an original data file only when it is determined that the image file has been converted.
[0022]
Further, a data exchange program according to the invention of claim 16 is a data exchange program executable by a computer for exchanging data using a mobile terminal, wherein the computer transmits and receives data to and from the mobile terminal. A first step of connecting as possible, and, when transmitting data in response to a user operation, converting original data prepared in advance into image data, and transmitting the image data to the portable terminal connected in the first step. A second step of transmitting the converted image data; and, when receiving data in response to a user operation, receiving image data from the mobile terminal connected in the first step; And a third step of restoring the original data.
[0023]
In the invention according to claim 16, the second step of causing the computer to convert the original data into image data according to an image format that can be held by the portable terminal, and the computer according to the image format that can be held by the portable terminal The third step of restoring the image data to the original data.
[0024]
In the invention according to claim 16, an image size and an image format handled by the mobile terminal are stored in advance corresponding to the type of the mobile terminal, and the second step of converting the image size and the image format into the pre-stored image size and image format is performed. May be provided.
[0025]
In the invention according to claim 16, at the time of conversion, the second step of embedding information indicating the type of the original data in the image data, and restoring according to the information indicating the type embedded in the image data. And the third step to be performed.
[0026]
In the invention according to claim 16, when the original data does not fit in the image data for one file, the second step of dividing the image data into a plurality of image files; In the case where the image data is composed of original data, the method may include the third step of restoring the image data composed of the plurality of image files to the one original data.
[0027]
In the invention according to claim 16, at the time of conversion, the second step of embedding information indicating the presence / absence of division and the order of division in the image data, and the presence / absence of the division embedded in the image data The third step of performing restoration in accordance with the information indicating the order at the time of division.
[0028]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0029]
The present invention relates to a data exchange device that temporarily stores a data file stored on a computer such as a PC as an image file in a portable terminal such as a mobile phone or a PDA, and transfers the image file from the portable terminal to another computer such as a PC. 2 shows an exchange method and a data exchange program.
[0030]
Therefore, in the embodiment described below, a case where a mobile phone is applied to data exchange between PCs will be described as an example. FIG. 1 is a diagram for explaining the principle according to an embodiment of the present invention. In FIG. 1, reference numerals 1 and 2 denote PCs and 3 denotes a mobile phone, respectively. Each of the PCs 1 and 2 includes a storage area for storing various data files, and the mobile phone 3 includes a storage area for storing data and image files, a display 31, and the like.
[0031]
In the storage area of the PC 1, for example, data files such as a document file 1A, an image file 1B, and a program file 1C are stored. Therefore, the principle of data exchange from PC1 to PC2 will be described.
[0032]
When transferring the document file 1A of the PC 1 to the PC 2, it is necessary to prepare an image file by first converting the document file 1A of the PC 1 into an image size and an image format that can be stored in the mobile phone 1A. Here, the image size and the image format of the mobile terminal correspond to the storage information. The image size indicates the number of pixels in the vertical and horizontal directions, and the image format indicates JPEG, PNG, BMP, or the like. A USB cable, an infrared ray, or the like can be used for communication between the PC 1 and the mobile phone 3 and communication between the mobile phone 3 and the PC 2.
[0033]
When the image file is prepared from the document file 1A in the PC 1, the image file is transmitted from the PC 1 to the mobile phone 3 via, for example, a USB cable. At this time, the received image file is stored in the storage area of the mobile phone 3 as, for example, the image file 3A.
[0034]
The mobile phone 3 and the PC 2 can be connected by, for example, a USB cable. The image file 3A is transmitted from the mobile phone 3 to the PC 2 via the USB cable. In the PC 2, the received image file 3 is restored to the original document file 1A, thereby completing the data exchange.
[0035]
Although the data exchange of the document file 1A has been described above, data exchange between the PCs 1 and 2 can be realized regardless of the file format like the image file 1B and the program file 1C.
[0036]
Even in the case of the image file 1B, first, the PC 1 converts the image into an image size and an image format handled by the mobile phone 3, and stores the image file 3B in the mobile phone 3. When the image file 3B is transmitted to the PC 2, the image file 3B is restored to the original image file 1B.
[0037]
Similarly, even in the case of the program file 1C, the PC 1 first converts the image size and image format handled by the mobile phone 3 and saves the image file 3C in the mobile phone 3. When the image file 3C is transmitted to the PC 2, the image file 3C is restored to the original program file 1C.
[0038]
Generally, a mobile phone can store a standby image. The image size and image format of the standby image differ depending on the model of the mobile phone. Therefore, the present invention focuses on handling a data file as an image file with the same image size and image format as the standby image.
[0039]
An image based on an image file on a mobile phone is no different from a normal standby image, but since the data in the data file is directly converted into image data, it has no meaning as an image.
[0040]
Further, for example, even if the image file 3A is expanded on a PC without applying the present invention, it can be handled only as an image file, but cannot be restored to the original document file 1A.
[0041]
Hereinafter, a more specific description will be given. First, a PC corresponding to the data exchange device of the present invention will be described. FIG. 2 is a block diagram illustrating a configuration example of a PC according to the present embodiment, and FIG. 3 is a diagram illustrating an example of a list handled in the present embodiment. FIG. 2 shows an example of the configuration of the PC1, but the same applies to the PC2, so that the description of the PC2 is omitted.
[0042]
The PC 1 connects an interface 12, a CPU 13, a ROM 14, a RAM 15, a display 16, a keyboard 17, a CD / DVD drive 18, and a hard disk 19 to an internal bus 11 as shown in FIG. A configuration for transmitting data and the like and realizing data exchange according to the present embodiment is provided.
[0043]
In FIG. 2, an interface 12 controls a function of connecting with a mobile phone 3 by a USB cable or an infrared ray. The interface 12 may have a function of connecting to a communication network such as the Internet. The CPU 13 controls the entire PC 1 by the OS stored in the ROM 14 and executes functions based on various application programs stored in the hard disk 19.
[0044]
The ROM 14 stores programs for controlling the entire PC 1, such as an OS, and has a function of supplying these to the CPU 13. The RAM 15 has a memory function used as a work area when the CPU 13 executes various programs.
[0045]
The display 16 has a function of displaying a menu, a status, a display transition, and the like accompanying various processes of the CPU 13. The keyboard 17 includes keys for inputting data such as characters, numbers, and symbols, cursor keys for operating point positions on the screen, and function keys. Note that a device such as a mouse may be provided to operate the point position.
[0046]
The CD / DVD drive 18 is a drive unit for executing an installation operation from a CD or DVD storing various programs. Note that a floppy (registered trademark) disk drive function may be added.
[0047]
The hard disk 19 is an external storage device that stores a program 19A, a memory 19B, a file list 19C, a storage destination list 19D, and the like. The program 19A corresponds to a program stored from the CD / DVD drive 18 or the like in an executable form. The memory 19B is a storage unit that stores data files such as a document file created by word processing software, an image file having a format of JPEG, PNG, BMP, or the like, and a program file before being converted into an executable format.
[0048]
The file list 19C is a table listing various data files stored in the memory 19B, and the storage destination list 19D is a mobile terminal such as a mobile phone required for data exchange according to the present invention and its storage information ( 3 is a table in which image sizes and image formats are associated with each other.
[0049]
The file list 19C is, for example, a table in which file attributes are associated with file attributes as shown in FIG. 3A. The attributes of a document, an image, and a program are associated with the file names “ABC”, “abc”, and “say”, respectively.
[0050]
The storage destination list 19D is, for example, a table in which storage destinations (for example, model names), image sizes, and image formats are associated with each other, as shown in FIG. 3B. The storage destinations “A1”, “A2”, “B1”, “B2”, “C1”, and “C2” have image sizes of 120 * 120, 120 * 160, 120 * 120, 120 * 160, and 120 *, respectively. 120, 120 * 160 are associated with each other, and JPEG, JPEG, PNG, PNGF, BMP, and BMP are associated with the respective image formats.
[0051]
Next, a function at the time of data exchange by the mobile phone according to the present embodiment will be described in detail. FIG. 4 is a block diagram illustrating a file saving function according to the present embodiment, and FIG. 5 is a block diagram illustrating a file reading function according to the present embodiment.
[0052]
Here, also, an example in which data exchange between the PCs 1 and 2 is performed via the mobile phone 3 will be described using the relationship of FIG. Here, a file to be subjected to data exchange is defined as an original file. First, a function until the original file is stored in the mobile phone 3 will be described with reference to FIG. The functions described below are realized by the program 19A and the units shown in FIG.
[0053]
First, the file list 19C is referred to on the PC 1, and the original file selection unit 101 selects an original file. After the selection of the original file, the storage destination selection unit 102 refers to the storage destination list 19D, and selects a storage destination to specify a mobile terminal that stores the original file. The two selections so far are performed by displaying the file list 19C and the storage destination list 19D on the display screen by the operation of the user.
[0054]
Subsequently, the storage information obtaining unit 103 refers to the storage destination list 19D, obtains an image size and an image format corresponding to the storage destination selected by the storage destination selection unit 102, and obtains an image size and Image conversion from the original file to the image file is executed according to the image format. As a result, an image file is generated. At the time of image conversion, selection information for specifying the original file is given from the original file selection unit 101 to the memory 19B, and the corresponding original file is read by the original file reading unit 105 and supplied to the image conversion unit 104. You.
[0055]
For example, when the file name “ABC” is selected from the file list 19C, the data exchange target is a document file (see FIGS. 3A and 3B). Further, when the storage destination "A1" is selected from the storage destination list 19D, the document file "ABC" is image-converted into a JPEG format with an image size of 120 * 120 (FIGS. 3A and 3B). )reference).
[0056]
At the time of the image conversion, the image conversion unit 104 performs a process of indicating the conversion from the data file to the image file and embedding an identifier indicating the type of the original file of the image file at a predetermined position in the data of the image file. This identifier is an N-bit code composed of numbers, symbols, and characters. Note that N may be 16 bits, 32 bits or more.
[0057]
Then, the image file generated by the image conversion unit 104 is written into the storage area of the mobile phone 3 by communication by the image storage unit 107. As a result, the image file is stored in the mobile phone 3 in an image format in the same manner as a general standby image.
[0058]
Next, a function of transferring the image file stored in the mobile phone 3 to the PC 2 will be described with reference to FIG. The functions described below are realized by the program 19A and the units shown in FIG.
[0059]
First, when the mobile phone 3 and the PC 2 are connected by communication, in the PC 2, the image list reading unit 201 reads the image list from the storage area of the mobile phone 3. Since this image list uses a list generally included in the mobile phone, for example, image Nos. For the number of image files that can be stored in the mobile phone are used. Can be obtained.
[0060]
Then, the target image No. from the image list is read by the image selection unit 202 to be read. Are selected as read targets. This selection operation is performed by a user's keyboard operation by displaying the image list. When the image file is selected in this manner, the data of the selected image file is read from the mobile phone 3 by the image reading unit 203.
[0061]
Then, the identifier presence / absence determination unit 204 confirms the identifier based on the data of the image file read from the mobile phone 3. When a determination result indicating that the identifier is the identifier of the type of the original file is obtained, the decompression (restoration) unit 205 decompresses the image file, that is, restores the original file.
[0062]
The original file restored in this way, that is, the document file “ABC” is stored in the memory 21 of the PC 2 under the control of the storage unit 206 of the original file. In this manner, data exchange between the PCs 1 and 2 can be realized via the mobile phone 3.
[0063]
Next, the operation according to the present embodiment will be described including a display example. FIG. 6 is a diagram illustrating a display transition when saving a file according to the present embodiment, FIG. 7 is a diagram illustrating a display transition when reading a file according to the present embodiment, and FIG. 8 is a diagram illustrating a display transition when saving a file according to the present embodiment. FIG. 9 is a flowchart for explaining the operation, and FIG. 9 is a flowchart for explaining the operation at the time of reading a file according to the present embodiment. Here, an example in which data is exchanged between the PCs 1 and 2 via the mobile phone 3 will be described, and an example will be described in which the file to be exchanged is a document file “ABC” and the mobile phone 3 is a model name “A1”.
[0064]
First, when a file list is displayed on the screen of the display 16 of the PC 1, the user can select a document file "ABC" 160 by moving a cursor (see FIG. 6A). The display of the file list may depend on general functions such as the OS. As described above, first, the original file to be saved is selected by the user's operation (step S10).
[0065]
After the selection of the original file, a save menu is displayed on the screen of the display 16. In this case, an icon 161 for saving in the mobile phone, an icon 162 for saving in the personal computer (PC1), and the like are displayed, and the user is prompted to specify the storage device (see FIG. 6B). Thus, the storage menu is displayed (step S11).
[0066]
Then, when the icon 161 is selected by the user's operation, a storage destination list is displayed (see FIG. 6C). That is, after the display of the save menu, when the icon 161 is operated (YES route in step S12), the save destination list 19D is read out and displayed on the screen for saving in the mobile phone (step S13). ). On the other hand, when the icon 162 is operated (NO route in step S12), normal saving processing is executed for saving to the personal computer.
[0067]
After the storage destination list is displayed, when a storage destination is selected by a user operation, a confirmation message screen 164 is displayed (see FIG. 6D). For example, when the storage destination “A1” 163 is selected (see FIG. 6C), the document file “ABC” selected as the storage confirmation may be stored in the model “A1” indicating the mobile phone 3. A selection icon 165 for deciding whether or not is displayed. There are two selection icons 165, "YES" and "NO".
[0068]
At this time, if the selection icon 165 of “YES” is selected by a user operation (step S15), the confirmation of the original file and the storage destination is completed. On the other hand, when the “NO” selection icon 165 is selected by a user operation (step S15), the process ends.
[0069]
After the “YES” selection icon 165 is selected, the storage information (image size and image format) related to the storage destination “A1” is read (step S16), and the document file “ABC” is stored based on the storage information. It is converted into an image file (step S17). At this time, embedding of an identifier indicating the type of data is also executed.
[0070]
The image 166 of the image file generated in this way is once displayed on the screen for the user to confirm. At the same time, an icon 167 is displayed so that either "confirmation" or "cancel" can be selected so that the user can determine whether or not the image has been confirmed by internal processing (see FIG. 6E). In this way, the image-converted original file is confirmed (step S18).
[0071]
When "confirmation" is confirmed by operating the icon 167, the image file of the document file "ABC" is stored in the mobile phone 3 by communication between the PC 1 and the mobile phone 3 (steps S19 and S20). When the saving is completed, a saving completion message screen 168 is displayed (see FIG. 6F), the communication between the PC 1 and the mobile phone 3 is cut off, and the data saving is completed (step S21).
[0072]
When the file is moved from the mobile phone 3 to the PC 2, the image 311 is displayed on the mobile phone 3 and the image No. corresponding to the data file is displayed. (See FIG. 7A), or the image may be displayed every time the image is read out to the PC 2 to check the image corresponding to the data file.
[0073]
In the PC 2, first, the PC 2 is connected to the mobile phone 3 by communication (step S30), and the image list is read from the storage area of the mobile phone 3 as the read source (step S31). Then, a process of displaying the image list is executed (Step S32). At this time, on the display 22 of the PC 2, the image numbers of the images that can be stored in the mobile phone 3 are displayed. Is No. 1, No. 2, No. 3 and the like are displayed (see FIG. 7B).
[0074]
Then, the image No. is set by a user operation. 1 is selected (FIG. 7B), the image No. 1 is displayed to the user. A message screen 222 for prompting confirmation of readability of the first image file and an icon 223 of “YES” or “NO” instructing readability are displayed (see FIG. 7C). In this way, the image No. to be read is read. Is performed (step S33).
[0075]
When the command 223 of “YES” is operated, the image No. One image file is read from the mobile phone 3, and an image 234 based on the image file is displayed on the screen as a target for decompression (restoration). At the same time, a command 225 for instructing either “decompression” or “cancel” is displayed (see FIG. 7D). As described above, after the reading is confirmed, the image No. to be read is read. A process of displaying one image on the screen is executed (Steps S34 and S35).
[0076]
When the operation of the “cancel” command 225 is performed (NO route in step S36), the process returns to step S31 (NO route in step S37) until the end operation is further performed, and the above-described process is executed. . When the end operation is performed (YES route in step S37), the present process ends.
[0077]
When the “decompression” command 225 is operated (YES route in step S36), the read image No. is read. Data corresponding to the identifier is extracted from a predetermined position of the data of one file (step S38). If the extracted data is a regular identifier indicating the type of the data file, the existence of the identifier is confirmed (YES route in step S39), and the decompression (restoration) process is executed. (Step S41).
[0078]
On the other hand, if the retrieved identifier is not the regular S period, it means that the absence of the identifier has been confirmed (NO route of step S39), an error is displayed on the screen, and the process is terminated. The process moves to S37 (step S40).
[0079]
After the decompression, the original file name, that is, "ABC" is displayed on the screen, and whether the data file is intended by the user is confirmed by displaying the command 226 (see FIG. 7E). That is, after the original file name is displayed (step S42), if the operation of the "confirm" command 226 is confirmed (YES route of step S43), a process of saving the original file is executed (step S44). ). When the saving is completed, a saving completion message screen 227 is displayed, and the process ends (see FIG. 7F). If the data file is not the target data file for the user (NO route of step S43), the process proceeds to step S37. In this case, the process of searching for the target data file is executed again.
[0080]
As described above, according to the first embodiment, when data is exchanged between PCs, the file to be exchanged on the PC side is used as an original file (original data) as an original file (original data). Converted to image size and image format, and stored on the mobile terminal in the same way as normal image data, so even if the image itself stored on the mobile terminal is meaningless, all the data making up the image is stored in the original file. Since the information is formed based on the image data, it is possible to realize efficient data exchange without adding unnecessary information to the data of the image file. In this case, the amount of data stored in the portable terminal can be suppressed to a necessary minimum.
[0081]
In addition, when the portable terminal is used as a kind of external storage device, the image itself has no meaning and the appearance is apparent, but when treated as an image, a security effect can be expected.
[0082]
In general, since an external storage device such as an external HDD or a floppy (registered trademark) disk is used only as a recording medium, there is a problem of bulkiness when the user carries the device. Can be used as a kind of external storage device, and the problem of bulkiness described above is solved.
[0083]
Further, data exchange can be easily realized simply by connecting the portable terminal and the PC by wired communication such as a USB cable.
[0084]
Further, it is possible to easily realize data exchange simply by connecting the portable terminal and the PC by wireless communication such as infrared rays and Bluetooth.
[0085]
When the data amount of the original file (original data) is enormous, the data may be divided into a plurality of image files and exchanged. As described above, when the original file does not fit in one file of the image data, the original file is divided into a plurality of files and stored, and restored to the data of one original file at the data exchange destination. Therefore, data exchange independent of the data amount of the original file can be realized.
[0086]
This case will be described briefly. FIG. 10 is a flowchart illustrating an operation at the time of saving a file according to a modification of the present embodiment, and FIG. 11 is a flowchart illustrating an operation at the time of reading a file according to a modification of the present embodiment.
[0087]
At the time of saving the file, after the process of step S16 (see FIG. 8), a saving method indicating whether or not there is division is determined based on the saved information and the data amount of the original file (step S51). At this time, if it is not the division method (NO route of step S52), the processing shifts to step S17 (see FIG. 8).
[0088]
On the other hand, in the case of the division method (YES route in step S52), the number of divisions is determined. Then, in the same storage processing as in step S17 (see FIG. 8), No. indicating the division flag and the division order for each image file according to the division number Is embedded in the data (step S53).
[0089]
Thereafter, the divided image files are displayed so that the user can visually recognize them (step S54), and the process returns to step S19 (see FIG. 8).
[0090]
Further, in the file reading from the mobile phone 3, after step S36 (see FIG. 9), a plurality of image Nos. Is checked (step S61). At this time, if there is no data (NO route in step S61), the process proceeds to step S39 (see FIG. 9). On the other hand, if there is (No route in step S61), the first image No. The existence of the identifier is confirmed from the data of the image file corresponding to (step S62). At this time, if the absence of the identifier is confirmed (NO route of step S62), the process proceeds to step S40 (see FIG. 9).
[0091]
On the other hand, when the existence of the identifier is confirmed (YES route of step S62), the existence of the division flag is further confirmed (step S63). At this time, if the absence of the division flag is confirmed (NO route of step S63), the process proceeds to step S40 (see FIG. 9). On the other hand, when the existence of the division flag is confirmed (YES route of step S63), decompression (restoration) is performed according to the division order embedded in the data including the selected other file (step S64). After the restoration, the process proceeds to step S42 (see FIG. 9).
[0092]
Further, when the data amount of the original file (original data) is small, a single image file may be formed from a plurality of original data and data exchange may be performed. When the data amount of the original file is small and a plurality of original files are stored in one image file, the original files are combined into one original file so that they can be decomposed later, and the original files combined at the data exchange destination are exchanged. If the files are restored to individual original files, data exchange independent of the data amount of the original files can be realized. In this case, data can be stored and exchanged more efficiently in the portable terminal.
[0093]
If the data amount of the original file is only one image file, the compressed original file may be converted to an image file.
[0094]
When the original file is converted into the image file, the date and time of the conversion may be embedded in the data of the image file so that the data file after the image conversion can be easily identified.
[0095]
【The invention's effect】
As described above, according to the present invention, when data is exchanged using a portable terminal, all data constituting the image is formed based on the original data even if the image itself stored in the portable terminal has no meaning. As a result, the data exchange device, the data exchange method, and the data exchange program capable of realizing efficient data exchange without adding unnecessary information to the image data can be provided.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating the principle according to the present embodiment.
FIG. 2 is a block diagram illustrating a configuration example of a PC according to the present embodiment.
FIG. 3 is a diagram showing an example of a list handled in the present embodiment.
FIG. 4 is a block diagram illustrating a file storage function according to the present embodiment.
FIG. 5 is a block diagram illustrating a file reading function according to the embodiment.
FIG. 6 is a diagram for explaining a display transition when saving a file according to the embodiment.
FIG. 7 is a diagram illustrating a display transition at the time of reading a file according to the present embodiment.
FIG. 8 is a flowchart illustrating an operation when saving a file according to the present embodiment.
FIG. 9 is a flowchart illustrating an operation at the time of reading a file according to the present embodiment.
FIG. 10 is a flowchart illustrating an operation at the time of saving a file according to a modification of the present embodiment.
FIG. 11 is a flowchart illustrating an operation at the time of reading a file according to a modification of the present embodiment.
[Explanation of symbols]
1,2 PC
3 mobile phone
13 CPU
14 ROM
15 RAM
16 Display
17 Keyboard
18 CD / DVD drive
19 Hard Disk
19A program
19B memory
19C file list
19D Save destination list
101 Original file selection section
102 Save destination selection section
103 Saved Information Acquisition Unit
104 Image conversion unit
105 Original file reading unit
106 identifier embedding part
107 Image storage
201 Image List Readout Unit
202 Image selection section of read out costume
203 Image readout unit
204 Identifier presence / absence determination unit
205 Decompression (restoration) section
206 Original File Storage

Claims (21)

A data exchange device,
Storage means for storing a plurality of image storage formats;
When converting an original data file specified according to a plurality of types of image storage formats stored in the storage unit into an image file, an image conversion unit that embeds a predetermined identifier,
Determining means for determining whether the predetermined identifier is embedded in a specified image file,
Restoration means for restoring the image file converted by the image conversion means to the original data file only when the judgment means judges that the predetermined identifier is embedded,
A data exchange device comprising: A data exchange device that performs data exchange using a mobile terminal,
Connection means for connecting to the mobile terminal so that data can be transmitted and received;
When transmitting data in response to a user's operation, converting and transmitting original data prepared in advance to image data, and transmitting the converted image data to a portable terminal connected by the connection means. Means,
When receiving data in response to a user operation, receiving and restoring means for receiving image data from the portable terminal connected by the connection means, and restoring the received image data to the original data,
A data exchange device comprising: The conversion and transmission unit converts the original data into image data according to an image format that can be held by the mobile terminal, and the reception and restoration unit converts the image data according to an image format that can be held by the mobile terminal. 3. The data exchange device according to claim 2, wherein the data exchange device restores the original data. The portable terminal further includes a storage unit that stores an image size and an image format handled by the mobile terminal in accordance with the type of the mobile terminal, and the conversion and transmission unit converts the image size and the image format stored in the storage unit. The data exchange device according to claim 2 or 3, wherein: The conversion and transmission unit, at the time of conversion, embeds information indicating the type of the original data in the image data, and the reception and restoration unit performs restoration according to the information indicating the type embedded in the image data. 5. The data exchange apparatus according to claim 2, wherein the data exchange is performed. The conversion and transmission unit divides the original data into a plurality of image files when the original data does not fit in one file of image data, and the receiving and restoring unit converts the received plurality of image files from one original data. 6. The data exchange apparatus according to claim 2, wherein when configured, image data composed of the plurality of image files is restored to the one original data. The conversion and transmission means, at the time of conversion, embeds information indicating the presence or absence of division and the order of division in the image data, the reception and restoration means, the presence and absence of the division embedded in the image data The data exchange apparatus according to claim 6, wherein restoration is performed according to information indicating an order at the time of division. A data exchange method,
A first step of embedding a predetermined identifier when converting an original data file designated according to a plurality of types of image storage formats stored in advance into an image file;
A second step of determining whether the predetermined identifier is embedded in a specified image file;
A third step of restoring the image file converted in the first step to an original data file only when it is determined in the second step that the predetermined identifier has been embedded;
A data exchange method comprising: A data exchange method for exchanging data using a mobile terminal,
A first step of connecting to the mobile terminal so that data can be transmitted and received;
In the case of transmitting data in response to a user's operation, a second step of converting original data prepared in advance into image data and transmitting the converted image data to the portable terminal connected in the first step Steps and
A third step of receiving image data from the mobile terminal connected in the first step and restoring the received image data to original data when receiving data in response to a user operation;
A data exchange method comprising: The second step converts the original data into image data according to an image format that can be held by the mobile terminal, and the third step converts the image data into original data according to an image format that can be held by the mobile terminal. 10. The data exchange method according to claim 9, wherein the data is restored. The image size and image format handled by the mobile terminal are stored in advance in correspondence with the type of the mobile terminal, and the second step converts the image size and image format into the pre-stored image size and image format. The data exchange method according to 9 or 10. The second step includes embedding information indicating the type of the original data in the image data during the conversion, and the third step performs restoration according to the information indicating the type embedded in the image data. The data exchange method according to claim 9, 10 or 11, wherein: The second step divides the original data into a plurality of image files when the original data does not fit in one file of image data, and the third step includes the step of dividing the received plurality of image files from one original data. 13. The data exchange method according to claim 9, wherein the image data composed of the plurality of image files is restored to the one original data. The second step embeds, in the image data, information indicating the presence / absence of division and the order of division at the time of conversion in the image data, and the third step includes presence / absence of the division embedded in the image data and 14. The data exchange method according to claim 13, wherein the restoration is performed according to the information indicating the order of the data exchange. A data exchange program executable by a computer,
To the computer,
A first step of embedding a predetermined identifier when converting an original data file designated according to a plurality of types of image storage formats stored in advance into an image file;
A second step of determining whether the predetermined identifier is embedded in a specified image file;
A third step of restoring the image file converted in the first step to an original data file only when it is determined in the second step that the predetermined identifier has been embedded;
A data exchange program characterized by executing the following. A data exchange program executable by a computer for performing data exchange using a mobile terminal,
To the computer,
A first step of connecting to the mobile terminal so that data can be transmitted and received;
In the case of transmitting data in response to a user's operation, a second step of converting original data prepared in advance into image data and transmitting the converted image data to the portable terminal connected in the first step Steps and
A third step of receiving image data from the mobile terminal connected in the first step and restoring the received image data to original data when receiving data in response to a user operation;
A data exchange program characterized by executing the following. The second step of converting the original data into image data according to an image format that can be held by the portable terminal; and the third step of restoring the image data to original data according to an image format that can be held by the portable terminal. 17. The data exchange program according to claim 16, comprising: An image size and an image format handled by the mobile terminal are stored in advance corresponding to the type of the mobile terminal, and the method includes the second step of converting the image size and the image format into the previously stored image size and image format. The data exchange program according to claim 16. At the time of conversion, the second step of embedding information indicating the type of the original data in the image data, and the third step of performing restoration in accordance with the information indicating the type embedded in the image data The data exchange program according to claim 16, wherein the data exchange program has a program. The second step of dividing the original data into a plurality of image files when the original data does not fit in the image data for one file; and the step of dividing the plurality of images if the received plurality of image files are composed of one original data. The data exchange program according to claim 16, further comprising: the third step of restoring image data composed of a file to the one original data. At the time of conversion, the second step of embedding information indicating the presence / absence of division and the order of division in the image data, and according to the information indicating the presence / absence of division and the order of division when embedded in the image data The data exchange program according to claim 20, further comprising the third step of performing restoration.

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