JP2000298606A - Data processing method and apparatus and storage medium - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To register metadata in binary data without affecting existing applications and to accurately determine metadata. In a data processing method for registering metadata in binary data, in steps S301 and S302, binary data to which metadata is to be added and metadata to be added to the binary data are read. If it is determined in step S303 that the read metadata is valid, in step S304,
A checksum is calculated based on the metadata.
In step S306, the generated checksum is connected to the read metadata after the read binary data. Then, in step S307, the entire data obtained in step S306 is output as one file.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a data processing method and apparatus for handling binary data and metadata, and a storage medium.

[0002] Meta-data is "data relating to data" and is used as data for explaining binary data such as image data and audio data. However, if the binary data and the corresponding metadata exist in separate files, the user must manage the binary data and the metadata at the same time when moving or copying the file, which is very troublesome. become.

Therefore, in general, various methods for describing binary data and metadata have been proposed in order to facilitate management of binary data and metadata. This type of conventional technology can be divided into two methods: a method of defining a new binary format and a method of managing a database.

First, an example of a method for defining a new binary format is as follows.
f, Exif, Flashpix, etc. FIG. 7 is a diagram showing an overview of a format in which metadata is embedded in binary data. The binary data includes, for example, image data. As shown in FIG. 7, it is a general method to provide a framework for describing metadata in a header portion of an image, and to describe the metadata there by a user. Describing the metadata in this manner facilitates data search and classification. Also, since metadata is included in the binary data, it can be managed with one file, and file management becomes relatively easy.

Next, a method for managing binary data and metadata in a database will be described. FIG. 8 is a diagram conceptually showing a method of managing binary data and metadata in a database. As shown in FIG. 8, a method of managing binary data and metadata existing in separate files by using a database or the like is widely used. In this case, there is an advantage that existing binary data can be used as it is in an existing application.

[0006]

However, there are problems in the method of defining a new format for describing metadata as described above and the method of managing metadata using a database.

First, when a new format for describing metadata is specified, existing binary data must be converted to the new format, and the metadata must be described in the new format. Further, in order to search using the metadata in the new format, an application compatible with the new format is required. In other words, there is a problem that an extremely large number of steps and a dedicated environment are required to describe and use the metadata. Further, in order to process binary data in such a new format (for example, to reproduce an image in the case of image data), an application corresponding to the format is required, and an existing application cannot support it.

[0008] In addition, the description method of metadata is also uniquely determined in the new format. In order to create an application that uses the metadata in the new format, a new metadata search routine must be created. There is also the problem that it must be done. In addition, there was a problem that the format specification had to be changed to describe the metadata of the new framework.

On the other hand, when simultaneously managing binary data and metadata using a database, there is a problem that metadata cannot be registered or used without database software. Also, dedicated software is required to display the registered metadata. Furthermore, when the binary data is taken out of the database, the metadata is not added, and the binary data has no metadata.

[0010] The present invention has been made in view of the above-mentioned problems relating to description and retrieval of metadata, and has as its object to enable registration of metadata in binary data without affecting existing applications. I do.

It is another object of the present invention to provide binary data in which metadata is registered in a form that can be processed by an existing application.

Another object of the present invention is to use a general data description language for describing metadata, thereby making it possible to use an existing tool for the data description language and to develop a corresponding application. To make it easier.

Still another object of the present invention is to extract metadata from binary data in which metadata is described,
For example, an object of the present invention is to enable processing such as search, reference, and change.

[0014] Another object of the present invention is to register check sum confirmation information together with metadata and determine the metadata using this confirmation information, thereby enabling more accurate determination of the metadata. To make it possible.

[0015]

A data processing method according to the present invention for achieving the above object includes, for example, the following steps. That is, a data processing method for registering metadata in binary data, comprising: a first reading step of reading binary data to be given metadata; a second reading step of reading metadata to be given to the binary data; A generation step of generating confirmation information based on the metadata read in the second reading step; and after the binary data read in the first reading step, the confirmation information generated by the generation means and the second The method includes a connection step of connecting the metadata read in the reading step, and an output step of outputting the entire data obtained in the connection step as one file.

According to another aspect of the present invention for achieving the above object, there is provided a data processing method including the following steps. That is, a method for determining metadata in binary data in which metadata is registered, a reading step of reading data, and inspecting the data read in the reading step from the end, and a predetermined format of a predetermined data description language. A first determining step for determining whether or not the data described in step 1 exists; and, when it is determined in the first determining step that data in a predetermined format exists, confirming information based on the data described in the predetermined format. Generating the confirmation information generated in the generating step, and the confirmation information stored in a predetermined position with respect to the data described in the predetermined format in the data read in the reading step. A comparison step of comparing the data; and a determination step of determining data described in the predetermined format as metadata based on a result of the comparison.

According to another aspect of the present invention, there is provided a data processing apparatus for realizing the above method. According to another aspect of the present invention, there is provided a storage medium storing a control program for implementing the above method by a computer.

[0018]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

<First Embodiment> FIG. 1 is a block diagram showing a configuration of a data processing apparatus according to a first embodiment.
In FIG. 1, a reading unit 100 reads an image using a scanner device or the like. Reference numeral 101 denotes an input unit for inputting instructions and data from a user, and includes a keyboard and a pointing device. 102 is a storage unit,
Store binary data and metadata. Accumulation unit 102
It is common to use a hard disk. A display unit 103 displays the binary data stored in the storage unit 102 and displays the image data read by the reading unit 100. As the display unit 103, C
RT and liquid crystal display devices are common.

Reference numeral 104 denotes a CPU, which is involved in all of the above-described processing of each component, and the ROM 105 and the RAM 106 provide the CPU 104 with programs, data, or a work area necessary for the processing. It is assumed that a control program for realizing the processing procedure of the present embodiment described later with reference to the flowchart of FIG. Of course, the control program may be stored in the storage unit 102, and the control program may be loaded on the RAM 106 in accordance with the execution by the CPU 104.

Although the data processing apparatus of the first embodiment has various components other than the above,
Since this is not the main subject of the present invention, the description thereof is omitted.

Next, processing for registering metadata as binary data in the data processing apparatus configured as described above will be described. FIG. 2 is a flowchart illustrating a metadata registration process according to the first embodiment.

In FIG. 2, first, at step S301
Then, the binary data designated by the user is read into the memory (RAM 106). This means, for example, entering the desired binary data file name from the keyboard,
This is performed by pointing an icon of the binary data with a pointing device (for example, a mouse).
Next, in step S302, the XML file in which the metadata is described by the user is read into the memory (RAM 106). This XML file can be specified by inputting the file name from the keyboard,
This is performed by pointing a corresponding icon with a pointing device (for example, a mouse).

Next, in step S303, it is checked whether the XML file in which the metadata is described is XML data in a proper format. In the determination of the appropriate format, it is checked whether the description format of the XML file is satisfied (for example, whether the parentheses on the left and right of the tag form a correct pair, the format of the tagging is correct, and the like). In addition, X of appropriate form
The determination as to whether or not the data is ML data may be a check including whether or not the data is valid XML data. Here, the determination as to whether the data is valid XML data is made, for example, by using the XML
This is performed by checking whether the L data is described in accordance with a schema such as DTD (Document Type Definition).

In step S303, the proper format XM
If it is determined that the data is not L data, step S305
Proceed to. In step S305, the fact that there is an error in the XML data is displayed on the display unit 103, and this processing ends.

On the other hand, if it is determined in step S303 that the XML file is XML data in a proper format, the process proceeds to step S304. Step S3
In 04, a checksum of the metadata is calculated.
As the checksum, a numerical value that can be uniquely determined from the metadata, such as the size of the metadata (the number of bytes), the number of characters, the number of words, the number of lines, and the number of items enclosed by tags, is used.
If two or more of these are used at the same time, a more accurate checksum can be constructed. Further, for the metadata discrimination process described later in the second embodiment, which numerical value was used as the checksum (or the method of calculating the checksum) may be described as XML data.

Next, in step S306, metadata and a checksum are registered at the end of the binary data read in step S301. Further, step S
In step 307, the binary data in which the metadata is registered is output, and the process ends.

FIG. 3 is a view for explaining the registration state of the metadata in the binary data according to the present embodiment. As shown in FIG. 3, at the end of the binary data, the checksum and the metadata described in the XML data and other formats are connected. By doing so, metadata can be registered without affecting other applications. Specifically, assuming that the binary data is standard JPEG image data, a commercially available image application (which does not recognize metadata) can read an image without any trouble even if metadata is added to the end. That is, since the information of the header portion of the binary data does not change before the connection of the metadata, for example, when the binary data is image data, the image can be reproduced by a general browser (the connected metadata is ignored). Is done).

Furthermore, since the metadata is described in XML, by extracting this XML data portion, if there is a tool that understands the XML data, it is possible to add, change, and refer to the metadata. It is very versatile. The extraction of the XML data part will be described in detail in the second embodiment.

As described above, according to the first embodiment, metadata is described in XML, and the XML data is connected to the end of the binary data to register the metadata in the existing binary data. be able to.

According to the first embodiment, by connecting metadata (XML format data and checksum) described in an appropriate format in a predetermined data description language to the end of binary data, an existing format is connected. Metadata can be registered in existing binary data without affecting applications. That is, binary data in which metadata is registered can be provided in a form that can be processed by an existing application. In addition, if an existing data description language is used as metadata, an existing tool for the data description language can be used as it is when editing or referencing the metadata, and the labor involved in development can be saved.

In the above embodiment, the validity of the XML data is checked, but it may be replaced with a check of whether the data is well-formed. The metadata format is X
The format is not limited to ML, and may be another format such as SGML or HTML.

<Second Embodiment> The method of registering metadata in binary data in the first embodiment has been described. In the second embodiment, a process will be described in which it is determined whether or not metadata is registered in binary data, and when the metadata is registered, the metadata is extracted. Note that the configuration of the data processing device according to the second embodiment is the same as that of the first embodiment (FIG. 1), and a description thereof will be omitted.

In the following, the first file data is
The operation for determining whether or not the metadata as described in the embodiment is registered and extracting the registered metadata will be described. FIG. 4 is a flowchart showing a procedure for determining and extracting registered metadata according to the second embodiment. In the present embodiment, the extracted metadata is displayed on the display unit 103, but the output form is not limited to this. For example, it will be apparent to those skilled in the art that the extracted metadata may be configured to be provided to a search process.

According to FIG. 4, first, in step S501,
Then, in accordance with the user's instruction, a file whose metadata is to be registered is specified. Step S501
File to be processed (data to be processed)
Is specified by inputting the file name of the data to be processed from the keyboard or designating the corresponding icon with a pointing device (mouse).

Next, in step S502, it is determined whether or not metadata described in XML is registered in the data of the designated file. Hereinafter, step S
Details of the determination processing in 502 will be described with reference to the flowchart in FIG. 5 and the schematic diagram in FIG. FIG. 5 is a flowchart illustrating details of the metadata determination process according to the second embodiment. FIG. 6 is a diagram illustrating a data configuration example of processing target data in which XML data is registered as metadata.

As described in the first embodiment, the data configuration of binary data in which XML data as metadata is registered is as shown in FIG. Therefore, the presence or absence of metadata is determined as follows.

As shown in FIG. 5, first, in step S
In step 601, the entire data of the file specified in step S 501 is read into the memory (RAM 106). Since the data output in step S306 of the first embodiment is managed as one file, it is possible to read the entire processing target data by a general file management system.

Next, in step S602, "</ PhotoXML" is added at the end of the data read in step S601.
Check if there is a character string ">". If not, the process proceeds to step S608, and it is concluded that the metadata is not registered in the processing target data.

On the other hand, at the end of the read data, "</ P
If the character string “hotoXML>” exists, step S
Proceed to 603. In step S603, “</ PhotoXML
It checks whether there is a character string "<PhotoXML>" before the character string ">", and checks whether the data surrounded by those character strings is described in an XML proper format. At this time, the determination as to whether or not the data is valid data in XML may be performed, and the determination as to whether or not the data is the proper format and the determination as to whether or not the data is valid may be performed in the first manner.
This is as described in the embodiment (Step S303).

If it is determined in step S603 that the format is appropriate, the process proceeds to step S604.
In step S604, a checksum stored immediately before the character string <PhotoXML> is read, and this is stored as checksum 1. In the next step S605, the checksum of the metadata confirmed to be in the proper format is calculated, and this is set as checksum 2. Here, the calculation method of the checksum is the same as the processing at the time of metadata connection described in the first embodiment. For example, when the “number of characters” is set as the checksum at the time of metadata connection, the “number of characters” is also calculated as the checksum in this process.

Next, in step S606, checksum 1 and checksum 2 are compared, and if they are equal, the flow advances to step S607 to conclude that metadata is registered. On the other hand, if the checksums are not equal, the process proceeds to step S608. If the character string “</ PhotoXML>” does not exist at the end of the binary data in step S602, and if the character string “<PhotoXML>” does not exist in step S603, it is determined that the internal description is not proper in step S603. Otherwise, or if the checksums do not match in step S607, the process proceeds to step S605.
Then, it is concluded that no metadata is registered in the processing target data. This is the end of the metadata determination.

Next, return to the flowchart of FIG. If it is concluded that the metadata has been registered by the process shown in the flowchart of FIG. 5, the process proceeds to step S503. In step S503,
The contents of the metadata registered based on the XML data in the portion surrounded by the character strings “<PhotoXML>” and “</ PhotoXML>” are displayed, and the process ends. On the other hand, if it is determined in step S502 that the metadata has not been registered, the process ends.

As described above, according to the second embodiment, the discrimination between the binary data with metadata and the normal binary data is performed by determining whether the XML data is described at the end of the data in an appropriate format. Can be determined. Also, if the metadata is determined,
The metadata can be displayed.

That is, according to the second embodiment, it is possible to distinguish between binary data in which metadata is registered and binary data in which metadata is not registered, and to extract the registered metadata. Become. Therefore, if an existing data description language is used as metadata, an existing tool for the data description language can be used as it is in a search using the metadata, and the time and effort for development can be saved.

Further, according to the above-described embodiment, since a check mechanism such as a checksum is provided to determine the metadata, the metadata can be more reliably determined.

In each of the above embodiments, XML data is used as metadata, but the present invention is not limited to this. For example, a data description language such as SGML or HTML may be used. Of course, the character string used to detect the presence of these data (in the embodiment <PhotoXML
> And </ PhotoXML>) and the validity determination depends on the data description language used, etc.
It is not limited by the embodiment. The binary data includes still image data, moving image data, audio data, and the like.

Various checksums can be used as described in the first embodiment. Also, in the metadata body (in the above embodiment, in the XML data)
In this case, the form of the checksum (for example, “the number of characters”) may be described, and the checksum may be calculated in accordance with the description when determining the data.

In the second embodiment, the presence or absence of metadata is determined using a checksum. After the determination based on the checksum, the consistency (Validate or Well-Formed) of the XML itself is confirmed. This makes it possible to make a more accurate determination.

The present invention can be applied to a system including a plurality of devices (for example, a host computer, an interface device, a reader, a printer, etc.), but can be applied to a single device (for example, a copier, a facsimile). Device).

Further, an object of the present invention is to provide a storage medium storing a program code of software for realizing the functions of the above-described embodiments to a system or an apparatus, and to provide a computer (or CPU) of the system or the apparatus.
And MPU) read and execute the program code stored in the storage medium.

In this case, the program code itself read from the storage medium implements the functions of the above-described embodiment, and the storage medium storing the program code constitutes the present invention.

As a storage medium for supplying the program code, for example, a floppy disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD
-R, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

When the computer executes the readout program code, not only the functions of the above-described embodiment are realized, but also the OS (Operating System) running on the computer based on the instruction of the program code. ) May perform some or all of the actual processing, and the processing may realize the functions of the above-described embodiments.

Further, after the program code read from the storage medium is written into a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, based on the instructions of the program code, It goes without saying that the CPU included in the function expansion board or the function expansion unit performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.

[0056]

As described above, according to the present invention,
Metadata can be registered in binary data without affecting existing applications. Also,
According to the present invention, binary data in which metadata is registered can be processed by an existing application. Further, according to the present invention, by using a general data description language for description of metadata, an existing tool for the data description language can be used, and development of a corresponding application is facilitated. Further, according to the present invention, it is possible to extract metadata from binary data in which metadata is described, and to provide the metadata to processing such as search, reference, and change. Furthermore, according to the present invention,
Checksum confirmation information is registered together with the metadata, and the metadata is determined using the confirmation information, so that more accurate metadata determination is possible.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a data processing device according to a first embodiment.

FIG. 2 is a flowchart illustrating a metadata registration process according to the first embodiment.

FIG. 3 is a diagram illustrating a registration state of metadata in binary data according to the embodiment.

FIG. 4 is a flowchart illustrating a procedure for determining and extracting registered metadata according to a second embodiment.

FIG. 5 is a flowchart illustrating details of metadata determination processing according to a second embodiment.

FIG. 6 is a diagram illustrating a data configuration example of binary data in which XML data is registered as metadata.

FIG. 7 is a diagram showing an overview of a format in which metadata is embedded in binary data.

FIG. 8 is a diagram conceptually showing a method of managing binary data and metadata in a database.

Claims (41)

[Claims] 1. A data processing method for registering metadata in binary data, the method comprising: reading binary data to which metadata is to be added;
A reading step, a second reading step of reading metadata to be added to the binary data, a generating step of generating confirmation information based on the metadata read in the second reading step, and a first reading step. After the read binary data, a connection step of connecting the confirmation information generated by the generation means and the metadata read in the second reading step, and a file obtained by combining the entire data obtained by the connection step into one file An output step of outputting the data as a data. 2. The data processing method according to claim 1, wherein the generating step generates a plurality of types of confirmation information for the metadata read in the second reading step. 3. The data according to claim 1, further comprising an appending step of appending information indicating a type of confirmation information used in the generating step to the metadata read in the second step. Processing method. 4. The method further comprises: determining whether the metadata read in the second reading step is described in an appropriate format in a predetermined data description language. 2. The data processing method according to claim 1, wherein the method is executed when it is determined in the determination step that the description is made in an appropriate format. 5. The data processing method according to claim 4, wherein the determination step includes determining whether the metadata satisfies the validity as the predetermined data description language. 6. A method for determining metadata in binary data in which metadata is registered, comprising: a reading step of reading data; and inspecting data read in the reading step from the end,
A first determining step of determining whether or not data described in a predetermined format of a predetermined data description language exists; and if the first determining step determines that data of a predetermined format exists, the data is described in the predetermined format. A generating step of generating confirmation information based on the obtained data; a confirmation information generated in the generating step; and a predetermined position with respect to the data described in the predetermined format in the data read in the reading step. A comparison step of comparing the confirmation information stored in the storage unit with the confirmation information; and a determination step of determining the data described in the predetermined format as metadata based on the comparison result of the comparison step. Processing method. 7. The data processing method according to claim 6, wherein the generating step generates a plurality of types of confirmation information. 8. The data processing method according to claim 6, wherein said generating step generates confirmation information of a type indicated by predetermined information included in the data described in the predetermined format. 9. The data processing apparatus according to claim 6, wherein the predetermined position where the confirmation information is stored is immediately before the data described in the predetermined format. 10. The data processing method according to claim 6, further comprising an output step of extracting and outputting the determined metadata when the metadata is determined in the determining step. 11. The method according to claim 10, wherein the output step performs a display based on the extracted metadata.
The data processing method described in 1. 12. The data processing method according to claim 10, wherein the output step provides the extracted metadata to a tool for processing the predetermined data description language. 13. The determining step includes: checking whether an end character string defined in the predetermined data description language exists at the end of the data; and determining whether the end character string exists. A search step of searching for a head character string defined in the predetermined data description language toward the head of the data; and when the head character string is searched in the search step, the head character string and the tail character string A checking step of checking whether data between the first and second data formats has an appropriate format in the predetermined data description language.
The data processing method described in 1. 14. The data processing method according to claim 13, wherein the checking step also includes checking whether the validity as the predetermined data description language is satisfied. 15. The data processing method according to claim 1, wherein the confirmation information includes a checksum using the number of bytes of metadata. 16. The method according to claim 1, wherein the confirmation information includes a checksum using the number of characters of metadata.
15. The data processing method according to any one of items 14 to 14. 17. The method according to claim 1, wherein the confirmation information includes a checksum using the number of words of metadata.
15. The data processing method according to any one of items 14 to 14. 18. The data processing method according to claim 1, wherein the confirmation information includes a checksum using the number of metadata lines. 19. The method according to claim 1, wherein the confirmation information includes a checksum using the number of items of metadata.
15. The data processing method according to any one of items 14 to 14. 20. The data processing method according to claim 1, wherein the binary data is image data. 21. The data processing method according to claim 1, wherein the binary data is audio data. 22. The data processing method according to claim 1, wherein the binary data is moving image data. 23. The data processing method according to claim 1, wherein the predetermined data description language is XML. 24. The method according to claim 24, wherein the predetermined data description language is SGML.
20. The data processing method according to claim 1, wherein: 25. The method according to claim 25, wherein the predetermined data description language is HTML.
20. The data processing method according to claim 1, wherein: 26. A data processing device for registering metadata in binary data, comprising: a first processor for reading binary data to which metadata is to be added;
Reading means; second reading means for reading metadata to be added to the binary data; generating means for generating confirmation information based on the metadata read by the second reading means; and first reading means. After the read binary data, connecting means for connecting the confirmation information generated by the generating means and the metadata read by the second reading means, and the entire data obtained by the connecting means in one file A data processing device comprising: 27. The data processing apparatus according to claim 26, wherein the generation unit generates a plurality of types of confirmation information for the metadata read by the second reading unit. 28. The data according to claim 26, further comprising an appending unit that appends information indicating a type of confirmation information used by said generating unit to the metadata read by said second unit. Processing equipment. 29. The apparatus according to claim 29, further comprising: a determination unit configured to determine whether the metadata read by the second reading unit is described in an appropriate format in a predetermined data description language. 27. The data processing apparatus according to claim 26, wherein the apparatus operates when the determination unit determines that the description is made in an appropriate format. 30. The data processing apparatus according to claim 29, wherein the determination unit determines whether the metadata satisfies the validity as the predetermined data description language. 31. An apparatus for determining metadata in binary data in which metadata is registered, comprising: reading means for reading data; inspecting the data read by the reading means from the end;
First determining means for determining whether or not data described in a predetermined format of a predetermined data description language exists; and when the first determining means determines that data in a predetermined format exists, the description is performed in the predetermined format. Generating means for generating confirmation information based on the received data; confirmation information generated by the generating means; and a predetermined position with respect to data described in the predetermined format in the data read by the reading means. A comparison unit that compares the confirmation information stored in the storage unit with the confirmation information; and a determination unit that determines the data described in the predetermined format as metadata based on a comparison result of the comparison unit. Processing equipment. 32. The data processing apparatus according to claim 31, wherein said generating means generates a plurality of types of confirmation information. 33. The apparatus according to claim 31, wherein the generation unit generates a type of confirmation information indicated by predetermined information included in the data described in the predetermined format.
A data processing device according to claim 1. 34. The data processing apparatus according to claim 31, wherein the predetermined position where the confirmation information is stored is immediately before the data described in the predetermined format. 35. The data processing apparatus according to claim 31, further comprising an output unit that extracts and outputs the determined metadata when the metadata is determined by the determination unit. 36. The apparatus according to claim 35, wherein the output unit performs display based on the extracted metadata.
A data processing device according to claim 1. 37. The data processing apparatus according to claim 35, wherein the output unit provides the extracted metadata to a tool for processing the predetermined data description language. 38. The discriminating means includes: checking means for checking whether an end character string defined in the predetermined data description language exists at the end of the data; and determining whether the end character string exists. Searching means for searching for a head character string defined in the predetermined data description language toward the head of the data; and when the head character string is searched by the searching means, the head character string and the tail character string 4. A checking means for checking whether data between the first and second data formats has an appropriate format in the predetermined data description language.
2. The data processing device according to 1. 39. The data processing apparatus according to claim 38, wherein said checking means also checks whether the validity as said predetermined data description language is satisfied. 40. A storage medium for storing a computer program for a process of registering metadata in binary data, wherein the computer program reads first binary data to which metadata is to be added.
A code for a reading step, a code for a second reading step for reading metadata to be added to the binary data, a code for a generating step for generating confirmation information based on the metadata read in the second reading step, After the binary data read in the first reading step, a code of a connecting step for connecting the confirmation information generated by the generating means and the metadata read in the second reading step; And a code for an output step of outputting the entirety of the generated data as one file. 41. A computer program for determining metadata in binary data in which metadata has been registered, the computer program comprising: a code for a reading step for reading data; Check the data from the end,
A code of a first determination step for determining whether or not data described in a predetermined format of a predetermined data description language exists; and, when it is determined in the first determination step that data of a predetermined format exists, the predetermined format The code of the generation step of generating the confirmation information based on the data described in, the confirmation information generated in the generation step, and the data described in the predetermined format in the data read in the reading step A code of a comparing step of comparing the confirmation information stored in a predetermined position with the code of a determining step of determining data described in the predetermined format as metadata based on a comparison result of the comparing step. A storage medium comprising: