KR20190118950A - System and method for detecting error of electronic document - Google Patents

Abstract

Provided is a program for detecting an error of an electronic document stored in a computer readable recording medium, comprising commands. The commands execute the steps of: storing first code information representing format information of an electronic document and second code information representing error information for each format; extracting byte information representing a state of an inputted electronic document, and comparing the extracted byte information with the first code information to determine a format of the inputted electronic document; and comparing the extracted byte information with the second code information in accordance with the determined format to determine whether an error of the inputted electronic document occurs.

Description

Electronic document error detection device and method {SYSTEM AND METHOD FOR DETECTING ERROR OF ELECTRONIC DOCUMENT}

The present invention relates to a technique for detecting an error present in an electronic document.

With the recent exponential growth of computers, a myriad of electronic documents have been generated, and these electronic documents are produced through various kinds of office tools.

Meanwhile, an error may occur in the produced electronic document due to various causes. For example, a zero byte document is generated by a bug or an error of an office tool that produces an electronic document, an error occurs in the file extension of the electronic document by an application system, or an electronic document is transmitted over a network. During the process, damage may occur to the electronic document file or damage to the storage of the electronic document due to fragmentation of the hard disk. If an error occurs in the electronic document, the electronic document may not be executed, or even if it is possible, an error may occur in the text, image, table, or object linking and embedding (OLE) object in the electronic document. Through this, a situation may arise in which the desired information cannot be obtained sufficiently.

It is necessary to check the integrity of the electronic document in order to minimize the loss due to the damage or damage of the electronic document. However, most organizations, including individuals, have the ability to check the status and contents of electronic documents by directly executing files.

The problem to be solved by the present invention is to identify the error of the electronic document only by the data value of the electronic document without directly executing the electronic document, and to provide information on this.

An electronic document error detection program stored in a computer-readable recording medium according to an embodiment of the present invention includes storing first code information indicating format information of an electronic document and second code information indicating error information for each format. Extracting byte information indicating a state of an electronic document, and comparing the extracted byte information with the first code information to determine a format of the input electronic document; a second code according to the extracted byte information and the determined format And comparing the information to determine whether an error of the input electronic document occurs.

In the determining of the format of the input electronic document, when the byte information of the input electronic document includes the first code information, the format corresponding to the first code information is determined as the format of the input electronic document. .

The electronic document error detection program determines a format currently set for the input electronic document based on a file name of the input electronic document, and the input electronic based on whether the determined format matches the currently set format. The method further includes instructions for executing a step of determining a format error of the document.

Determining whether an error of the input electronic document occurs, if the byte information of the input electronic document includes the second code information according to the determined format, the error corresponding to the second code information is inputted. Is determined to have occurred in an electronic document.

The error includes at least one of a capacity error or a file corruption error.

The electronic document error detection program further includes instructions for executing a step of outputting together the determined error occurrence and job information.

The job information includes at least one of a file name, a job request time or a job execution time of the electronic document.

According to an embodiment of the present invention, an electronic document error detecting apparatus detects an error of an electronic document by storing code information indicating format information of the electronic document for each format of the electronic document, in the header block of the input electronic document. Extracting included first byte information, determining code information included in the first byte information, and determining a format corresponding to the determined code information as a format of the input electronic document, the input electronic document Determining a format currently set for the input electronic document based on a filename of the file, and determining a format error of the input electronic document based on whether the determined format matches the currently set format. .

The method for detecting an error of an electronic document by the electronic document error detecting apparatus may include determining a byte structure corresponding to the determined format, extracting second byte information included in a data block of the input electronic document, and Determining whether a content error of the input electronic document is based on whether the second byte information is in violation of the byte structure.

The electronic document error detecting apparatus detects an error of an electronic document by using an object location information table of the determined format to access objects constituting the input electronic document, wherein the objects are stored in the input electronic document. The method may further include determining whether an error of the content of the input electronic document depends on whether it exists effectively.

The method for detecting an error of an electronic document by the electronic document error detecting apparatus further includes outputting the determined format error and content error together with the job information.

The job information includes at least one of a file name, a job request time or a job execution time of the electronic document.

According to the present invention, the error of the electronic document can be confirmed only by the data value of the electronic document without directly executing the electronic document.

1 is a diagram illustrating an electronic document error detection apparatus according to an embodiment.
2 is a structural diagram of an error determining unit according to an exemplary embodiment.
3 is a diagram illustrating a method of determining a format using byte information of an electronic document.
4 is a diagram illustrating a method of determining whether to encrypt, compress, and generate an error using byte information of an electronic document.
5 is a diagram illustrating a method of detecting a format error of an electronic document by an electronic document error detecting apparatus according to an embodiment.
6 is a diagram illustrating a method of detecting, by an electronic document error detecting apparatus, at least one of a capacity error and a file corruption error of an electronic document.
7 is a diagram illustrating a method of detecting a content corruption error of an electronic document by an electronic document error detecting apparatus according to an embodiment.
8 illustrates a file structure of a pdf file of an electronic document.
9 is a diagram illustrating an exemplary method of determining, by an electronic document error detection apparatus, whether a format and a content error of an electronic document.
10 illustrates a file structure of an OLE file in an electronic document.
FIG. 11 is a diagram illustrating another exemplary method by which an electronic document error detection apparatus determines a format and a content error of an electronic document.
12 illustrates another environment in which an electronic document error detection apparatus is implemented.
13 is a diagram illustrating another environment in which an electronic document error detection apparatus is implemented.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

1 is a diagram illustrating an electronic document error detection apparatus according to an embodiment.

Referring to FIG. 1, the electronic document error detecting apparatus 100 includes an input unit 110, a code information storage unit 120, an error determination unit 130, and an output unit 140.

The electronic document error detecting apparatus 100 may be a computer device that stores a program (electronic document error detecting program) that determines whether an error occurs in the electronic document by using byte information of the input electronic document. That is, the electronic document error detecting apparatus 100 may be an apparatus for storing an electronic document error detecting program in a computer readable recording medium and determining whether an error of the input electronic document occurs through this.

Here, the computer-readable recording medium refers to a medium that stores data semi-permanently, not a medium for storing data for a short time such as a register, a cache, a memory, and the like, and is readable by a device. Examples of the recording medium include, but are not limited to, a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

The input unit 110 transmits the electronic document input from the user to the error determiner 130.

The electronic document input to the input unit 110 may be classified into text files, binary files, and mixed file types. For example, the electronic documents may be txt files, hwp files, doc files, docx files, ppt files, pptx files, There may be various types of files such as xls file, xlsx file, pdf file, hwd file, hwn file, hof file, hgn file, jpg file, bmp file, tiff file, but not limited thereto.

Here, a text file refers to a file consisting of only strings from a human-recognized string set. Well-known string sets include ASCII string sets and Unicode string sets. Text files can usually identify the contents of an electronic document using Windows Notepad or text editing tools. When the contents of the file are stored on the disk, the text is stored and managed by substituting the numbers from 0 to 255. The format in which the numbers 0 to 255 are stored in bytes can be defined as the byte information of the present specification of the text file. Can be.

In addition, a binary file refers to a file whose contents include various information such as font size or color, character position, image information, etc. in addition to letters, numbers, or symbols. This corresponds to the file format defined by a particular office tool. Therefore, the binary file can be identified by the human eye only through the produced office tools. The byte information of the present specification includes not only letters, numbers, or symbols of the binary file but also a form in which other information is stored in byte units.

In addition, a hybrid file is a text file that is itself a text file, such as an individual HTML file or an XML file that is compressed or grouped into another form. Refer. The byte information of the present specification includes a form in which information related to compression and information related to shape transformation are stored in a byte unit in a mixed file.

The code information storage unit 120 stores code information indicating the format information of the electronic document for each format of the electronic document, stores code information indicating the error for each format for each error, and stores information on whether to encrypt the format. Stores information about compression by format. In this case, the error includes at least one of a capacity error or a file corruption error.

For example, the code information storage unit 120 stores the code information "48 57 50 20 44 6F 63 75 6D 65 6E 74 20 46 69 6C 65 20 56 33 2E 30" for the format "hwp". Code Information for "D0 CF 11 E0 A1 B1 1A E1" and "57 00 6F 00 72 00 64 00 44 00 6F 00 63 00 75 00 6D 00 65 00 6E 00 74 00" and "4D 69 63 72 6F 73 6F 66 74 20 57 6F 72 64 "can be stored.

The error determining unit 130 extracts byte information of the electronic document received from the input unit 110 and determines the format, encryption, compression, and error of the electronic document using the extracted byte information. The error determination unit 130 will be described in detail with reference to FIG. 2.

The output unit 140 provides the format information, whether or not to encrypt, whether or not to compress and error information. Here, the format information refers to the actual format of the electronic document determined by the byte information, regardless of the extension described in the file name of the input electronic document, and the error occurrence information includes at least one of a format error, a capacity error, a file corruption error, or a content error. It includes one.

In addition, the output unit 140 may provide the job information performed on the electronic document together, and the job information may include at least one of a file name, a job request time, or a job execution time of the electronic document.

The electronic document error detection apparatus 100 of the present invention does not allow a user to directly read the electronic documents and visually check whether the execution is possible or whether the internal content is damaged. Automatically identify errors, allowing you to quickly and accurately review the availability of electronic documents.

2 is a structural diagram of an error determining unit according to an embodiment, FIG. 3 is a diagram illustrating a method of determining a format using byte information of an electronic document, and FIG. A diagram illustrating a method of determining whether to compress and whether an error occurs.

Referring to FIG. 2, the error determiner 130 may include a byte information extractor 131, a format type determiner 132, a format error determiner 133, an electronic document verifier 134, and a content error determiner ( 135),

The byte information extracting unit 131 extracts byte information representing the state of the electronic document. Specifically, when the electronic document is executed, the byte information extracting unit 131 reads the byte information loaded into the memory to extract the byte information of the corresponding electronic document.

In another embodiment, the byte information extracting unit 131 analyzes the file structure of the electronic document to classify the header block and the data block, and extracts the first byte information included in the header block and the second byte information included in the data block. Extract each. The method of distinguishing the header block and the data block of the file is a known method and detailed description thereof will be omitted.

The format type determination unit 132 determines code information included in the byte information of the electronic document, and determines a format corresponding to the code information as the format of the electronic document.

Specifically, the format type determination unit 132 determines whether the extracted byte information includes specific code information stored in the code information storage unit 120, and determines the format corresponding to the code information to be included as the format of the electronic document. do.

For example, referring to FIG. 3, the format type determination unit 132 determines that the byte information of the electronic document is code information "48 57 50 20 44 6F 63 75 6D 65 6E 74 20 46 69 6C 65 20 56 33 2E 30". If you include the format of the electronic document can be determined as "hwp", code information "D0 CF 11 E0 A1 B1 1A E1", "57 00 6F 00 72 00 64 00 44 00 6F 00 63 00 75 00 6D 00 65 00 6E 00 74 00 "and" 4D 69 63 72 6F 73 6F 66 74 20 57 6F 72 64 ", the format of the electronic document can be determined as" doc ".

The format error determiner 133 determines a format currently set for the electronic document based on the file name of the electronic document, and formats the electronic document based on whether the format determined by the format type determiner 132 matches the currently set format. Determine the error.

Specifically, the format error determination unit 133 determines the format currently set in the electronic document by using the file name of the electronic document. For example, when the file name of the electronic document is "xxx.hwp", the format error determination unit 133 converts "hwp" described after ".", Which is located last in the file name, into the format currently set for the electronic document. You can decide.

The format error determiner 133 determines whether the determined format matches the currently set format. If the determined format matches the currently set format, the format error determination unit 133 determines the actual format of the electronic document as the determined format and determines that no format error has occurred. If the determined format does not match the currently set format, the format error determination unit 133 determines the actual format type as the determined format and determines that a format error has occurred.

The electronic document verification unit 134 determines whether an error of the electronic document occurs according to whether the byte information of the electronic document includes code information indicating an error for each format. In this case, the error of the electronic document includes at least one of a capacity error or a file corruption error. In addition, the electronic document verification unit 134 determines whether to encrypt the electronic document according to whether the byte information of the electronic document includes code information indicating an encryption state for each format. In addition, the electronic document verification unit 134 determines whether to compress the electronic document according to whether the byte information of the electronic document includes code information indicating a compression state for each format.

For example, referring to FIG. 4, when looking at the document structure when the format of the electronic document is "hwp", the electronic document includes information on whether or not to encrypt the 126 byte by adding the 96 byte to the 30 byte. If the format of the electronic document is "hwp" and the value of 126 byte is "0x01", the electronic document may be defined in advance as being in an encrypted state, and the electronic document verification unit 134 may format the "hwp". In the case of "0x01", the electronic document may be determined to be in an encrypted state by checking a 126 byte value.

For example, when the format of the electronic document is "hwp", the document structure is described. Since the electronic document includes information on whether the electronic document is compressed to 154 Byte by adding 124 Byte to 30 Byte, the code information storage unit 120 When the format of the electronic document is "hwp", when the value of 154 byte is "0x00", the electronic document may be predefined as being in a compressed state, and the electronic document verification unit 134 may determine the electronic document in the "hwp" format. In the case of "0x00" by checking the 154 byte value, the electronic document may be determined to be in a compressed state.

Also, for example, when the format of the electronic document is "pdf", the code information storage unit 120 may predefine that the last character string of the byte information is "%% EOF", and the electronic document verification unit 134 ) Checks the last character string of byte information in case of an electronic document of "pdf" format, and if it is not "%% EOF", the electronic document may determine that a file corruption error has occurred.

In addition, for example, when the format of the electronic document is "pdf", the code information storage unit 120 may predefine that the electronic document is a zero byte document when there is no data value in the byte information. The electronic document verification unit 134 may determine that a capacity error occurs as a zero byte document when the data value does not exist in the byte information in the case of the electronic document of the "pdf" format.

The content error determination unit 135 accesses the objects constituting the electronic document using the determined object location information table and determines whether there is a content error in the electronic document according to whether the objects exist in the electronic document. .

In detail, the content error determining unit 135 may check the object location information table by referring to the file structure of the electronic document according to the determined format, and the objects constituting the electronic document using the object location information table are located in the electronic document. Determine location information. Thereafter, the content error determination unit 135 accesses the objects by using the location information and checks whether the objects are inappropriately represented or omitted from the electronic document. If all the objects are valid in the electronic document, the content error determination unit 135 determines that the electronic document does not have a content error. However, when any one of the objects does not exist effectively, the content error determination unit 135 determines that the electronic document has a content error.

5 is a diagram illustrating a method of detecting a format error of an electronic document by an electronic document error detecting apparatus according to an embodiment.

Referring to FIG. 5, the electronic document error detection apparatus 100 stores code information indicating format information (S100).

The electronic document error detection apparatus 100 extracts byte information indicating the state of the input electronic document (S110).

In this case, when the input electronic document file is a mixed file such as an OOXML file, the electronic document error detection apparatus 100 decompresses the block unit using a compressed algorithm and extracts byte information of the decompressed file. can do.

The electronic document error detection apparatus 100 determines the format of the input electronic document by comparing the extracted byte information and code information (S120).

In detail, the electronic document error detection apparatus 100 determines whether the byte information includes code information, and when the byte information includes code information, determines the format corresponding to the code information as the format of the electronic document. In this case, the electronic document error detection apparatus 100 may include the determined format in the error detection report and output it (S121).

Thereafter, the electronic document error detection apparatus 100 determines the format currently set for the electronic document using the file name of the electronic document (S130), and determines whether the determined format matches the currently set format (S140).

If the determined format and the currently set format match, the electronic document error detection apparatus 100 determines that no format error has occurred (S150), and outputs the corresponding result in the error detection report (S151).

If the determined format and the currently set format do not match, the electronic document error detection apparatus 100 determines that a format error has occurred (S160), and outputs the corresponding result in the error detection report (S161). In this way, the electronic document error detection apparatus 100 may allow the user to detect an error due to the extension change without having to confirm whether an error occurs by actually executing the electronic document.

6 is a diagram illustrating a method of detecting, by an electronic document error detecting apparatus, at least one of a capacity error and a file corruption error of an electronic document.

Referring to FIG. 6, the electronic document error detection apparatus 100 stores first code information indicating format information and second code information indicating error information for each format (S200).

In detail, the electronic document error detecting apparatus 100 stores code information indicating format information of the electronic document for each format of the electronic document, and stores code information indicating error for each format for each error. In this case, the error includes at least one of a capacity error or a file corruption error.

The electronic document error detection apparatus 100 extracts byte information indicating the state of the input electronic document (S210).

The electronic document error detection apparatus 100 determines the format of the input electronic document by comparing the extracted byte information with the first code information (S220). In this case, the electronic document error detection apparatus 100 may include the determined format in the error detection report and output it (S221).

The electronic document error detection apparatus 100 determines second code information according to a format determined by byte information of the electronic document (S230), and determines whether the byte information includes the second code information (S240).

If the byte information of the electronic document includes the second code information according to the determined format, the electronic document error detecting apparatus 100 determines that an error corresponding to the second code information has occurred in the input electronic document. (S250). In this case, the electronic document error detection apparatus 100 may include the error determined to have occurred in the error detection report and output the error (S251).

If the byte information of the electronic document does not include the second code information according to the determined format, the electronic document error detection apparatus 100 determines that no capacity error or file corruption error has occurred (S260). The result can be included in the error detection report and output (S261).

7 is a diagram illustrating a method of detecting a content corruption error of an electronic document by an electronic document error detecting apparatus according to an embodiment.

Referring to FIG. 7, the electronic document error detection apparatus 100 stores code information indicating format information and a byte structure for each format (S300).

The electronic document error detection apparatus 100 extracts byte information indicating the state of the input electronic document (S310).

The electronic document error detection apparatus 100 determines the format of the input electronic document by comparing the extracted byte information and code information (S320). In this case, the electronic document error detection apparatus 100 may include the determined format in the error detection report and output it (S321).

The electronic document error detection apparatus 100 determines a byte structure according to the format of the electronic document (S330), and determines whether the byte information of the electronic document violates the determined byte structure (S340).

If the byte information violates the determined byte structure, the electronic document error detection apparatus 100 determines that a content corruption error has occurred (S350), and outputs the result by including the result in an error detection report (S351).

For example, when the format of the electronic document is "hwp", the electronic document error detection apparatus 100 may check the length and structure of the entire file by checking the length of the information block in the document information, and the data structure of the information block. If not, the electronic document may determine that a content corruption error has occurred. In this case, the electronic document error detection apparatus 100 may perform the above process on the byte information (information block contents) included in the information block of the electronic document.

If the byte information does not violate the determined byte structure, the electronic document error detection apparatus 100 determines that a content corruption error has not occurred (S360), and outputs the corresponding result in the error detection report (S361). .

According to the present invention, the error of the electronic document can be confirmed only by the data value of the electronic document without directly executing the electronic document.

FIG. 8 is a diagram illustrating a file structure of a pdf file of an electronic document, and FIG. 9 is a diagram illustrating an exemplary method of determining, by an electronic document error detection apparatus, whether a format and a content error of an electronic document.

Referring to FIG. 8, the pdf file is composed of a header block, a data block, a global reference table block, and a trailer block. Specifically, the header block is a section composed of 8 bytes in total and includes the signature and version information of the pdf in bytes. The data block contains the object and other information of the electronic document in bytes. The global reference table block contains the location information of the objects constituting the pdf. The trailer block contains the location of the global reference table block and the root object and other global objects. Contains location information.

Referring to FIG. 9, the electronic document error detection apparatus 100 stores code information indicating format information of an electronic document for each format of the electronic document (S400).

The electronic document error detection apparatus 100 analyzes the file structure of the input electronic document to distinguish between the header block and the data block (S410).

For example, the electronic document error detection apparatus 100 may divide the file structure of the received electronic document into four blocks including a header block and a data block as shown in FIG. 8.

The electronic document error detection apparatus 100 determines the format of the electronic document using code information included in the byte information included in the header block (S420).

For example, the electronic document error detection apparatus 100 reads byte information in a header block composed of 8 bytes, and when the byte information includes code information corresponding to the signature and version information of the pdf, the format of the corresponding electronic document is ". pdf ".

The electronic document error detecting apparatus 100 accesses the objects constituting the electronic document, and determines whether a content error of the electronic document occurs based on whether the objects exist effectively in the electronic document (S430).

For example, when the electronic document error detection apparatus 100 determines that the format of the electronic document is "pdf", the electronic document error detecting apparatus 100 may access the objects based on the location information in the global reference table block defined in the trailer block. In this case, the electronic document error detection apparatus 100 may access the objects in the order of Catalog Object and Pages Object to determine whether the objects exist effectively. In the verification process, a page rendering technique and a structured process may be simultaneously performed.

The electronic document error detection apparatus 100 performs the above process for all objects constituting the electronic document, and if all the objects exist effectively in the electronic document, the electronic document determines that a content error does not occur. If any one of them is not valid, the electronic document may determine that a content error has occurred.

The electronic document error detection apparatus 100 provides the user with the file information on whether the file is damaged or the content error occurs (S440). In this case, the job information may include at least one of a file name, a job request time or a job execution time of the electronic document.

FIG. 10 is a diagram illustrating a file structure of an OLE file among electronic documents, and FIG. 11 is a diagram illustrating another exemplary method for determining an electronic document format and content error by an electronic document error detection apparatus.

Referring to FIG. 10, an OLE file is mainly composed of a header block and a data block. Among these, the data block is composed of a compound file structure similar to a general FAT file system, and includes a DIFAT array, a FAT array, a directory entry array, and a mini FAT array.

DIFAT Array is an array that exists only in a large OLE file (more than 6.875MB) and is used in the same way as FAT Array.

FAT array is an array of 32-bit integers, the index means the sector number, and the element corresponding to the index means the next index number. That is, the FAT array includes the location information of the objects constituting the OLE file.

Directory Entry Array stores meta information related to Storage or Stream, and is divided into Root Directory Entry, Storage Directory Entry, and Stream Directory Entry according to its characteristics. Root Directory Entry means the top entry and contains Mini Stream, Stream Directory Entry contains User-defined Data Streams.

Mini FAT Array is a reference table for short-length streams (64 bytes or less) and is used in the same way as FAT Array.

Referring to FIG. 11, the electronic document error detection apparatus 100 stores code information indicating format information of an electronic document for each format of the electronic document (S500).

The electronic document error detection apparatus 100 analyzes the file structure of the input electronic document to distinguish between the header block and the data block (S510).

For example, the electronic document error detection apparatus 100 may divide the file structure of the input electronic document into a header block and a data block as shown in FIG. 10.

The electronic document error detection apparatus 100 determines the format of the electronic document using the code information included in the byte information included in the header block (S520).

For example, the electronic document error detection apparatus 100 may determine that the byte information included in the header block includes code information indicating an OLE signature, and in this case, may determine that the format of the electronic document is an OLE file.

The electronic document error detection apparatus 100 generates an object location information table including location information of objects using byte information included in a header block and byte information included in a data block (S530).

For example, when the electronic document error detection apparatus 100 determines that the format of the electronic document is an OLE file, the electronic document error detection apparatus 100 obtains the location of the FAT sector by referring to the position of the first DIFAT sector in the header block, and combines each sector to form a FAT array. Can be generated.

If the file size is small and there is no DIFAT array, the electronic document error detection apparatus 100 reads 109 DIFAT elements leading to the end of sector -1 to obtain the locations of FAT sectors, and combines each sector to create a FAT array. can do. The created FAT array includes location information of the objects constituting the OLE file.

The electronic document error detection apparatus 100 accesses the objects constituting the electronic document using the object location information table, and determines whether there is an error in the content of the electronic document according to whether the objects exist effectively in the electronic document (S540). ).

In the above example, the electronic document error detection apparatus 100 checks the start sector of the objects stored in the FAT array, tries to access sequentially from the object located in the start sector, and the data located in the specific sector stored in the FAT array is ENDOFCHAIN. If (== 0xFFFFFFFE), access can be terminated. In this process, when there is no data in the accessed object, the electronic document error detection apparatus 100 may determine that the electronic document has a content error.

The electronic document error detection apparatus 100 provides the content error occurrence information to the user together with the job information (S550). In this case, the job information may include at least one of a file name, a job request time or a job execution time of the electronic document.

12 illustrates another environment in which an electronic document error detection apparatus is implemented.

Referring to FIG. 12, an environment in which the electronic document error detection apparatus 100 is implemented includes an electronic document error detection apparatus 100 and a user terminal 200.

In FIG. 12, the electronic document error detection apparatus 100 may be constructed as a separate server that stores the electronic document error detection program. In this case, the electronic document error detecting apparatus 100 is connected to the user terminal 200 through a network to receive an error detection request for a specific electronic document from the user terminal 200, and detects an error of the corresponding electronic document to detect an error. The report may be transmitted to the user terminal 200. The error detection request includes information necessary for the electronic document error detection apparatus 100 to detect an error of the electronic document.

The user terminal 200 receives an electronic document that is an error detection target from a user and transmits an error detection request of the electronic document to the electronic document error detection apparatus 100 through a network. To this end, the user terminal 200 may include a dedicated program for extracting information necessary for error detection from the input electronic terminal and transmitting the error detection request to the electronic document error detection apparatus 100.

Upon receiving the error detection request from the user terminal 200, the electronic document error detection apparatus 100 determines a format and an error occurrence of the electronic document and transmits an error detection report including information on the error message to the user terminal 100. do.

13 is a diagram illustrating another environment in which an electronic document error detection apparatus is implemented.

Referring to FIG. 13, an environment in which the electronic document error detection apparatus 100 is implemented includes an electronic document error detection apparatus 100, a document production system 300, and a document management system 400.

In FIG. 13, the electronic document error detection apparatus 100 is constructed as a separate server that stores the electronic document error detection program, as in FIG. 12.

The document production system 300 produces an electronic document using a specific office tool, and transmits the electronic document to the document management system 400 for management of the produced electronic document.

The document management system 400 transmits an error detection request of the electronic document to the electronic document error detection apparatus 100 to detect an error of the received electronic document. In this case, the error detection request includes information necessary for the electronic document error detection apparatus 100 to detect an error of the electronic document.

When the electronic document error detection apparatus 100 receives an error detection request from the document management system 400, the electronic document error detection apparatus 100 detects an error of the electronic document and transmits an error detection report to the document management system 400.

If it is determined that an error has occurred in the electronic document as a result of the reception of the error detection report, the document management system 400 determines an action for resolving the error of the electronic document, and produces the electronic document. Ask for the action decided.

If it is determined that no error has occurred in the electronic document as a result of receiving the error detection report, the document management system 400 stores the electronic document. In this case, the document management system 400 may transmit an error detection report to the document production system 300 to notify that an error has not occurred in the corresponding electronic document.

The embodiments of the present invention described above are not only implemented through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiments of the present invention or a recording medium on which the program is recorded.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims (14)

An electronic document error detection program stored in a computer readable recording medium,
Storing first code information indicating format information of the electronic document, second code information indicating error information for each format, first information indicating whether to encrypt by format, and second information indicating whether to compress by format,
Extracting byte information indicating a state of an input electronic document, and comparing the extracted byte information with the first code information to determine a format of the input electronic document;
Comparing the extracted byte information with second code information according to the determined format to determine whether an error of the input electronic document occurs;
Determining whether to encrypt the input electronic document by comparing the extracted byte information with first information according to the determined format; and
Determining whether to compress the input electronic document by comparing the extracted byte information with second information according to the determined format
Electronic document error detection program comprising instructions for executing. In claim 1,
Determining a format of the input electronic document
And when the byte information of the input electronic document includes first code information, determining a format corresponding to the first code information as a format of the input electronic document. In claim 2,
Determining a format currently set for the input electronic document based on the file name of the input electronic document, and
Determining a format error of the input electronic document based on whether the determined format matches the currently set format;
Electronic document error detection program further comprising instructions for executing the. In claim 1,
Determining whether an error of the input electronic document occurs
And if the byte information of the input electronic document includes the second code information according to the determined format, determining that an error corresponding to the second code information has occurred in the input electronic document. In claim 4,
Wherein the error comprises at least one of a capacity error or a file corruption error. In claim 1,
Determining whether the input electronic document is encrypted
If the byte information of the input electronic document includes the first information according to the determined format, an electronic document error detection for determining whether to encrypt the input electronic document using an encryption state corresponding to the first information. program. In claim 1,
Determining whether or not to compress the input electronic document
When the byte information of the input electronic document includes the second information according to the determined format, an electronic document error detection for determining whether to compress the input electronic document using a compression state corresponding to the second information. program. In claim 1,
Outputting at least one of the determined error, the determined encryption or the determined compression together with the job information;
Electronic document error detection program further comprising instructions for executing the. In claim 8,
The job information is
And at least one of a file name of the electronic document, a job request time, and information on a job execution time. As an electronic document error detection device detects an error of an electronic document,
Storing code information representing format information of the electronic document for each format of the electronic document,
Analyzing the file structure of the input electronic document to distinguish between the header block and the data block,
Extracting first byte information included in the header block;
Determining code information included in the first byte information, and determining a format corresponding to the determined code information as a format of the input electronic document;
Determining a format currently set for the input electronic document based on the file name of the input electronic document, and
Determining a format error of the input electronic document based on whether the determined format matches the currently set format;
Error detection method further comprising. In claim 10,
Determining a byte structure corresponding to the determined format;
Extracting second byte information included in the data block, and
Determining whether a content error of the input electronic document is based on whether the second byte information is in violation of the byte structure;
Error detection method further comprising. In claim 10,
Access to the objects constituting the inputted electronic document using the object position information table of the determined format, and whether or not the content of the inputted electronic document according to whether or not the objects are valid in the inputted electronic document Steps to determine
Error detection method further comprising. In claim 12,
Outputting at least one of the determined format error or the determined content error together with the job information;
Error detection method further comprising. In claim 13,
The job information is
And at least one of a file name of the electronic document, a job request time, and information on a job execution time.

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