JPH11161666A - Method and device for document data retrieval and document editing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the device which can generally retrieve a data file generated by a work processor, CAD, etc. SOLUTION: The document data retrieval device 1 consists of a retrieval condition input means 15 which stores an inputted key word, a key data file retrieval means 17 which extracts, reads, and stores a key data file from a data file storage device 2, a key word retrieval means 16 which reads and stores key data from a corresponding data file according to the data read in by the key data file retrieval means, inspects whether the data matches the retrieval key word and stores information on a data file having the matching key data in a buffer, and a display means 10 which displays the data held in the buffer of the key word retrieval means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for retrieving a document data used for extracting a data file of a target document from a storage device, a document editing apparatus, and a data file generating apparatus.

[0002]

2. Description of the Related Art When extracting a data file necessary for printing or displaying a document created using a word processor, CAD or the like again from a storage device, a user attaches a file attached to the data file. It is difficult to find the desired file based on the name alone. As a method to help you find the target data file,
Document header information for storing a keyword or the like used for searching the document is added to the head of the data file, as disclosed in Japanese Patent Application Laid-Open No. 61-198332. There is a method of searching for a data file requested by a user by comparing the data file with an input search condition.

In addition to this method, all data files are stored in the form of data in the form of character codes such as ASCII codes (hereinafter, referred to as text data). Conventionally, a method of searching for a data file requested by a user by comparing.

[0004]

According to the method based on the document header information described above, if a keyword related to the data file is registered in advance as document header information and stored in a storage device, the data file can be searched for. It is possible to find a target data file relatively easily. However, the format of a data file usually depends heavily on tools such as a word processor and CAD, so that the document header information must be in a format dependent on the tool. Therefore, to search that data file without specifying the tool that created the desired document,
It is necessary to grasp all information on the format of the data file for each tool. Since each tool may change the format of the data file due to version upgrade or the like, a great deal of labor is required at all times to manage information on all file formats of all tools. That is, it is difficult to search for a target document using a data file created by an unspecified tool.

Further, according to the second conventional method, by saving all data files as text data, it is possible to search for a target data file without depending on a tool for creating a document. Become. However, a data file created by a tool for creating a document includes data such as figures as well as character string data. In particular, in the case of CAD or the like used in connection with the design of a machine or software, the ratio of data such as graphics increases. Normally, data such as figures are held as numerical data indicating their attributes, but when this is output to a file as text data (numerals), there is a drawback that the data amount becomes larger than the original numerical data. In addition, if all data files are used as text data and this is used for search, even data with numbers that are unlikely to be search conditions will be searched,
There was a problem that extra search time was required.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to minimize the increase in the amount of data in a data file without relying on a tool for creating a document. It is an object of the present invention to provide a document data search method that can be targeted and a device related thereto.

[0007]

The object of the present invention is to provide a data size measuring means for counting and storing the size of already output data when outputting a document data file to a storage device. And a key data file output means for outputting the data of the output data size held by the data size measurement means and the data of the position of the character string of the keyword in the file. This is achieved by a configuration in which the key data file output means performs processing for outputting the position and size of the keyword in the data file to the keyword file when outputting to the storage device.

[0008] Further, the above object is to provide a display means for displaying a document, a data input means for reading an operation input to the document by a user, and a function of displaying the document in accordance with information inputted through the data input means. Document editing means for processing data and displaying the result on a display means, wherein the document editing means holds information for identifying whether a character string data in a document is a keyword or not. This is achieved by a configuration having a function of making it possible to distinguish on the display device depending on whether the keyword is a keyword or not.

Further, the above object is to provide a key data file read buffer for sequentially reading and storing data of a key data file for each data file in an area of a storage device designated by a user, and information of a key data file read buffer. A key data reading buffer in which information obtained by extracting a keyword from a key data file is stored, and a comparison with a keyword in the key data reading buffer is performed in accordance with a search keyword input via the input means. If there is matching key data, information on the data file having the matching key data is stacked in the temporary storage buffer, and the search for the storage device area specified by the user is completed, and the search result is displayed on the display device. This is achieved by having a configuration.

Further, the object of the present invention is to read a data file holding document data, search for a predetermined character string sequence (keyword identification symbol), and search for a relative character string data in the data file. A keyword determination processing means for measuring and storing the position; and a key data file output processing means for outputting information of a relative position stored in the keyword determination processing means to a file having a file name corresponding to the data file, and This is achieved by reading a data file with the keyword identification symbol attached to a character string serving as a keyword in the file, and generating a keyword file in accordance with the position of the keyword in the file.

[0011] By using the above configuration means, the size of the key data file to be newly added can be reduced independently of the format of the data file of the document. It is possible to find the data file of the document to be executed.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention. The present embodiment shows a document editing apparatus 1 in which a document data search apparatus is incorporated. Each time data of a document edited by a user is stored in a data file storage device 2, the position of keyword data in a data file is simultaneously determined. An editing function for generating a key data file having information and outputting the generated key data file to the data file storage device 2, and storing a target data file on the basis of a search condition such as a search keyword set by a user. It has a function of searching from the device 2.

In FIG. 1, a display means 10 displays a search result and a document to be edited. The data input means 11 is a data input means constituted by a keyboard and a mouse. Through the data input means 11, input of setting of a search keyword and a search condition of a data file and operation input for a document to be edited are performed. Will be

The document editing means 12 temporarily stores the data of the document to be edited, and arranges the figure of the document and sets its attributes according to the data input by the user via the data input means 11. It has a function of performing editing processing and displaying the contents of the document on the display device 10 according to the document data.
Further, the document editing unit 12 sets an attribute as a keyword for a part of a character string in the document based on the data input through the data input unit 11. Further, when displaying a character string in the document data to which a keyword attribute is set, the display device 10 has a function of highlighting the character string so that it can be distinguished from a character string in which no other keyword attribute is set. Note that other general editing processing functions of the document editing unit 12 are not directly related to the present invention, and thus description thereof is omitted.

The data size measuring means 13 analyzes the data of the document input from the document editing means 12, and sequentially counts and stores the data size. The data of the input document is stored in a data file storage device 2 connected to the editing device 1 of the present embodiment.
And output it as a data file. Further, when receiving data as a keyword from the document editing means, the cumulative value of the data size, that is, the pointer to the keyword data in the data file, and the data size of the keyword data are stored in the key data file output means 14. Pass to.

The key data file output means 14 stores the keyword pointer and the data size inputted from the data size measuring means 13 in the data file storage device 2.
Output to the key data file created for each data file.

Here, the document editing apparatus 1 of this embodiment uses "DOC" as an extension of a file name of a data file of a document and "IND" as an extension of a key data file.

The search condition input / output processing means 15 analyzes and stores the search keywords and search conditions input via the data input means 11, and the results are sent to the keyword search means 16 and the key data file search means 17. Passed. The search condition input / output unit 15 displays the search result on the display unit 10 in response to the input of the search result from the keyword search unit 16.

The keyword search means 16 includes a key data buffer for temporarily storing information on the position and size of the keyword data in the search target data file read from the key data file, and a key word buffer extracted from each file. A search is performed using a keyword buffer for temporarily storing a list and a result buffer for storing information on search results. That is, the key data file is read into the key data buffer based on the key data file information input from the key data file search means 17, and keywords are extracted from the document data file based on the data and stored in the keyword buffer. Further, the keyword is compared with the search keyword input from the search condition input / output unit 15, and information of the data file of the keyword that matches the search condition is stored in the result buffer.

The key data file search means 17 searches for a file whose file name extension is "IND" in accordance with the data of the search target storage device input from the search condition input / output means 15, and finds the found key data file. To the keyword search means 16.

FIG. 2 conceptually shows the structure of a data file and a key data file output from the document editing apparatus 1 of the present embodiment to the data file storage device 2. FIGS. 3 to 5 are diagrams used to explain the operation of the present embodiment in an easy-to-understand manner, and are screen diagrams displayed on the display unit 10. 6 and 7 are flowcharts showing the operation of the present embodiment.

Hereinafter, the operation of the embodiment of the present invention will be described in detail. The specific operation according to the present invention is roughly classified into a key data storage operation for storing a key data file corresponding to document data and a data file search operation for searching the stored document data.

First, the key data saving operation will be described with reference to FIG. The key data saving operation is started in synchronization with the document editing device 1 saving document data operation. In step 101, the data of the integrated data amount held by the data size measuring means 13 is set to zero. Next, in step 102, the name data of the data file of the document output from the document editing means 12 is read. In step 103, step 10
The data file in the data file storage device 2 is opened based on the data read in step 2. In step 104, one piece of document data output from the document editing means 12 is read.

In step 105, the size of the data read in step 104 or step 110, that is, the number of bytes of data is evaluated. The size of the data is
Evaluate using a constant value corresponding to data attributes (integer, real number, character string, etc.).

In step 106, it is evaluated whether the data evaluated in step 105 is a keyword.
That is, when the document is edited by the document editing unit 12, the determination is made based on the attribute value indicating whether or not it is a keyword, which is held in association with the character string data in the document. FIG. 3 shows an example of a screen displayed when the user sets a keyword attribute of a character string as a keyword at this time. In the example of the screen shown in FIG. 3, a keyword attribute is to be set for the character string "keyword 2". In this figure, the character string "keyword 3" has a keyword attribute already set, and in order to indicate this, it is displayed with an underline so that it can be distinguished from other character strings.

In step 107, when the data evaluated in step 106 is a keyword, the value of the integrated data amount and the size of the data evaluated in step 104 are output to the key data file output means 14.

In step 109, the value of the integrated data amount is updated. That is, the value of the integrated data amount is added to step 1
The value of the data size evaluated in 05 is added, and this value is newly set as the integrated data amount.

In step 110, the next data output by the document editing means 12 is read. At this time, if there is the next data, the process returns to step 105. If there is no data, the process proceeds to step 112, and the data file is closed.

At this time, the key data file output means 14 reads the integrated data amount up to the keyword data outputted from the data size measuring means 13 and the data of the keyword size, and stores the key data file in the data file. The data is written in the same directory as the data file to be processed by the device 2. At this time, a character string (“DOC” in this embodiment) used as an extension of the name of the data file is written at the head of the key data file. Further, the name of the key data file at this time is the same as the name of the data file, and the extension part is stored as “IND”.

With the above processing, a key data file for each document data file is generated.

Next, the data file search operation will be described. When the data file search operation is started, the search condition input / output unit 15 displays a screen for prompting the user to input a search keyword and a search condition on the display unit 10. The display screen has a format as shown in FIG. 4, and the user follows this screen and specifies a target keyword and a storage device to be searched for in the data input means 11.
To enter through. The input data is analyzed by the search condition input / output unit 15 to store the search keyword and the data of the search target storage device, respectively, and to pass the respective data to the keyword search unit 16 and the key data file search unit 17. .

When the search condition input processing is completed, the key data file search means 17 uses the data of the search target storage device input from the search condition input / output means 15 to change the file name extension in the search target storage device. The file “IND” is searched, and the result, that is, the file name and the directory name where the file is stored are passed to the keyword search unit 16. The keyword search means 16 determines the search keyword and each data file based on the search keyword input from the search condition input / output means 15 and the data of the search target key data file input from the key data file search means 17. Compares the keyword with the data file and stacks the information of the data file with the matching keyword in the result buffer. When the search is completed, the information of the result buffer is displayed on the display means 10. FIG. 5 shows an example of this display screen. The search processing by the keyword search means 16 is performed based on the flowchart shown in FIG.

The details of the search process will be described with reference to the flowchart of FIG. First, in step 201, the key data file to be searched from the key data file search means 17 and the information of the search keyword from the search condition input / output means 15 are read and stored. Next, step 20
In step 2, it is evaluated whether there is a key data file that has not been searched yet. If not, the flow advances to step 215 to display the data in the result buffer on the search result display screen, and ends the search processing.
FIG. 5 shows an embodiment of a screen displayed on the display means 10 at this time.

In step 203, the key data file to be searched is updated. In step 204, the key data file to be searched is opened and read into the key data buffer. Next, in step 205, the data file is opened based on the information of the key data file. That is, the extension part of the file name of the key data file is changed based on the information of the key data file, and the file having the file name is opened.

In step 206, it is evaluated whether or not there is unprocessed data in the key data buffer, that is, data in which the character string of the corresponding keyword has not been read from the data file.
Proceed to. If not, the process proceeds to step 210.

In step 207, the data file is skipped according to the data in the data buffer. And
In step 208, text data of a character string having a size corresponding to the data in the data buffer is read and stacked in the keyword buffer. In step 209, the data to be processed in the key data buffer is replaced with the next data. Steps 207 to 209 are repeated until the processing is completed for all data in the key data buffer.

In step 210, the keyword of the data file stored in the keyword buffer is compared with the keyword to be searched. Then, it is determined in step 211 whether or not the search keyword is included. If the keyword is included, the data in the keyword buffer and the information on the data file to be processed are stacked in the result buffer in step 212.

In step 213, the data file to be processed is closed. In step 214, all data in the keyword buffer is deleted.

The processing of steps 202 to 214 is
The process is executed for all key data files read in step 201.

In the above embodiment, the data file extracted as a result of the search is not described up to the point where the data is opened by the editing device and the editing process is performed. By determining the type of the editing device that created the data file and sending the data file to the editing device, editing can be performed easily.

Although the user can designate a character string to be registered as a keyword in the document, all character strings in the document can be registered as keywords. Further, it is also possible to automatically determine whether or not to register as a keyword, based on the size of characters in displaying a document and the attributes of characters such as fonts.

Next, a second embodiment of the present invention will be described in detail with reference to the drawings. The second embodiment is a key data file generation device having a function of inputting a data file created by an arbitrary document editing tool and outputting a key data file used in the document data search device of the present invention. .

FIG. 8 is a block diagram showing this embodiment. In the figure, reference numeral 3 denotes a key data file generation device, which is connected to a data file of a document and a data file storage device 2 for storing the key data file. The data input means 25 includes a keyboard and a mouse, through which a file name of a data file to be processed is input. The keyword delimiter storage unit 26 stores a predetermined delimiter for identifying a keyword in a document data file. In the present embodiment, character string data "[[" is used as a delimiter indicating the start of a keyword in a data file, and "]]" is used as a delimiter indicating the end of a keyword. The data stored in the keyword delimiter storage unit 26 can be read from an external storage device, or can be input by the user via the data input unit 25. In addition, a plurality of keyword delimiters can be used instead of only a single symbol sequence.

The data file name input processing section 21 analyzes the data file name to be processed inputted through the data input means 25, and the result is stored in the data file name buffer 27. The data file read processing unit 22 reads a file having the name stored in the data file name buffer 27 from the data file storage device 2 and writes the read data to the data buffer 28.

The keyword determination processing section 23 counts the data size of the data stored in the data buffer 28 and sequentially writes the integrated data amount from the head of the data to the integrated data amount buffer 29. Also, the keyword determination processing unit 23
Extracts the data to be a keyword from the data input from the data buffer 28 based on the data stored in the keyword delimiter storage means 26 and writes the data size of the keyword data to the keyword data size buffer 30. At the same time, the key data file output processing unit 24 performs a writing process to the key data file in the data file storage device 2.

The key data file output processing section 24 reads the file name data stored in the data file name buffer 27 and replaces the file name extension with a predetermined key data file extension. A file is created in the data file storage device 2. In the present embodiment, the extension of the key data file is “IND”. Also, when new data is written to the keyword data size buffer 30 in response to a command from the keyword determination processing unit 23, the key data file output processing unit 24 A process of writing data to a key data file is performed.

FIG. 9 is a diagram conceptually showing the structures of a data file and a key data file handled as processing targets in the present embodiment. FIG. 10 is a flowchart showing the operation of the second embodiment of the present invention.

Hereinafter, the operation of the second embodiment of the present invention will be described in detail with reference to the flowchart of FIG. First, the key data file generating device 3 is activated, and when the user inputs a data file name to be processed via the data input means 25, the data file name input processing section 21 sets the data file name to be processed to the data file name. Buffer 2
7 and passes control to the data file read processing unit 22 (step 301).

The data file reading processor 22 sets the value of the integrated data amount buffer to 0 (step 30).
2) According to the data in the data file name buffer 27, the data file in the data file storage device 2 is opened, and the read data is written in the data buffer 28 (step 303).

Next, at step 304, the key data file output processing section 24 creates a key data file,
The data extension part of the data file name buffer 27 is written.

In step 305, the keyword determination processing section 23 reads data of a predetermined size from the data buffer 28, and writes the integrated data amount from the head of the data to the integrated data amount buffer 29. Then, it is evaluated whether the data read in step 305 matches the keyword delimiter (step 306). As a result, if it is determined that the keyword matches the delimiter (step 307), the data size of the keyword is written to the keyword data size buffer 30 in step 308, and
A key data write command is issued to the key data file output processing unit 24. Key data file output processing unit 24
Outputs the values of the integrated data amount buffer 29 and the keyword data size buffer 30 to the key data file in response to this command. If it is determined in step 307 that the data is not key data, step 308 is skipped and step 309 is executed.
Proceed to.

In step 309, the keyword judgment processing unit 23 updates the data in the integrated data amount buffer 29. Next, at step 310, the keyword determination processing unit 2
3 reads data of a predetermined size from the data buffer 28. The above steps 305 to 310 are repeated for all data in the data buffer 28. When processing is completed for all data (step 311)
Closes the data file (step 312), and closes the key data file in step 313. Through the above processing, a key data file can be generated from the data file.

As described above, the key data file generated in the second embodiment can be searched by the data file search means incorporated in the document editing apparatus of the first embodiment.

In the second embodiment, the keyword data is identified by the keyword delimiter. However, instead of the keyword delimiter, words that can be used as keywords are stored in advance and are stored in the data file of the document to be processed. Alternatively, if this word is found, it can be processed as a keyword.

[0056]

As described above, according to the present invention, it is possible to use a key data file that holds data on the data position and size of a keyword in a document data file. As a result, since only key data can be extracted from an arbitrary data file, it is possible to search for a data file of a target document in a general-purpose manner regardless of a tool that created the document. This eliminates the need for the user to search for the document by using a plurality of tools, thereby saving time.

Further, according to the present invention, the data format of the tool that created the document can be used as it is, and the key data file used for the search includes the file name extension of the data file and the pointer to the keyword data. In addition, since only data of that size is stored, the amount of data can be significantly reduced as compared with the case where a data file is stored as text data, and data unrelated to the search can be prevented from being searched. As a result, a data file can be stored even in a data file storage device having a smaller storage capacity, and a search can be performed in a shorter search processing time.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a document editing device according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram showing the structure of a data file and a key data file to be processed.

FIG. 3 is a diagram showing an embodiment of a display screen.

FIG. 4 is a diagram showing an embodiment of a display screen.

FIG. 5 is a diagram showing an embodiment of a display screen.

FIG. 6 is a flowchart showing the flow of processing of the document editing apparatus according to the embodiment of the present invention.

FIG. 7 is a flowchart showing the flow of processing of the document editing apparatus according to the embodiment of the present invention.

FIG. 8 is a block diagram showing a configuration of a key data file generation device according to another embodiment of the present invention.

FIG. 9 is a conceptual diagram showing the structure of a data file and a key data file to be processed.

FIG. 10 is a flowchart showing the flow of processing of a key data file generation device according to another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Document editing device, 2 ... Data file storage device, 3 ... Key data file generation device, 10 ... Display means, 11 ... Data input means, 12 ... Document editing means, 13 ... Data size measuring means, 14 ... Key data file Output means, 15 ... search condition input means, 16 ... keyword search means, 17 ... key data file search means,
21: Data file name input processing unit, 22: Data file reading processing unit, 23: Keyword judgment processing unit, 24
... key data file output processing unit, 25 ... data input means, 26 ... keyword delimiter storage means, 27 ... data file name buffer, 28 ... data buffer, 29 ...
Integrated data amount buffer, 30 ... keyword size buffer.

Claims (13)

[Claims] 1. A document data search apparatus for extracting a target data file from a data file storage device having a data file and a key data file holding information necessary for extracting data serving as a search key in the data file. A search condition input means for storing a search keyword inputted from outside; a key data file search means for extracting and reading and storing all key data files from the data file storage device; and a key data file search means. Keyword search means for reading and storing key data from the read key data file, checking whether the read key data matches the search keyword, and storing information of a data file having the matching key data in a buffer. When,
Display means for displaying data held in a buffer of the keyword search means. 2. A document data search method for extracting a target data file from a data file storage device having a data file and a key data file holding information necessary for extracting data serving as a search key in the data file. Analyzing the data of the search keyword according to the input information of the search keyword, reading all the key data files from the data file storage device based on the analysis result, and extracting the key data from the read key data file. Extract,
By comparing the extracted key data with the data of the search keyword, if there is key data that matches,
A document data search method characterized by searching for a data file holding the key data and displaying the file name of the searched data file. 3. A document data search method for extracting a target data file from a data file storage device having a data file and information necessary for extracting data serving as a search key in the data file. Analyzing the data of the search keyword in accordance with the input information of the search keyword and the data of the search target storage device, and reading all key data files from the search target storage device of the data file storage device based on the analysis result; If key data is extracted from the read key data file and the extracted key data is compared with the search keyword data, if there is a matching key data, a data file holding the key data is searched. Displaying the file name of the searched data file. Document data search method. 4. A data input means for inputting a user's operation on a document to be edited and, based on data input via the data input means, execute editing processing on character or graphic data described in the document. Document editing means for storing a processing result in a buffer; and display means for displaying a document based on the document data stored in the document editing means. A document editing device connected to a data file storage device that holds data in the form of: a key used in a search based on data input through the input means for data in a document to be edited as the document editing means. Setting of attribute data whether to be data or not Document editing means for executing an editing process, and writing data of a document held in a buffer of the document editing means as a data file in the data file storage device, and analyzing the position and size of key data at that time. And a key data file output means for writing information on the position and size of the key data held by the data size measurement means into a key data file of the data file storage device. A document editing device, characterized in that: 5. The document editing apparatus according to claim 4, wherein the document editing unit sets the data input unit to a value of attribute data indicating whether to use key data used in a search held in a buffer or not. A document editing device having a function of changing according to information input via the document editing apparatus. 6. The document editing apparatus according to claim 4, wherein the document editing unit performs the display in accordance with a value of attribute data indicating whether to use key data used in a search held in a buffer or not. A document editing device having a function of displaying the contents of a document so that corresponding items displayed on the means can be distinguished. 7. A document editor for storing data of a document edited by a user in a data file storage device and retrieving a target data file from the data file storage device based on search keyword data set by the user. An apparatus, comprising: the document editing apparatus according to claim 4; and the document data search apparatus according to claim 1. 8. A data input means for processing input information from a user, a keyword delimiter storage means for storing data for identifying key data for search in data of a data file, A data file name buffer for temporarily storing internal data of the data, a data buffer, an integrated data amount buffer, and a keyword data size buffer.
D, etc., connected to a data file storage device that holds the data file of the document to be processed created in D, etc., and a key data file generation device that generates a key data file for searching the data file held in the data file storage device A data file name input processing unit that analyzes data of a file name of a data file input through the data input means and writes the data to a data file name buffer; and a data file to be processed according to the data of the data file name buffer. A data file read processing unit for writing data from a data file storage device to a read data buffer; reading data in the data buffer; evaluating a data size of the read data; and calculating an integrated data amount from the beginning of the data to an integrated data amount buffer. And write It is determined whether the data to be processed is key data based on the data held in the keyword delimiter storage means, and when it is determined that the data is key data, the value of the data size is stored in the keyword data size buffer. A keyword determination processing unit to be written, and a key data file created in the data file storage device, and when new data is written to the keyword data size buffer, the value of the integrated data amount buffer and the value of the keyword data size buffer are used as keys. A key data file generation device, comprising: a key data file output processing unit for outputting to a data file. 9. The key data file generation device according to claim 8, wherein the key data file output processing unit has a document data extension part which is an extension of a file name stored in the data file name buffer. A key data file generating apparatus having a function of generating a key data file having a file name in which is replaced with another predetermined extension, and writing data of the document data extension into the key data file. 10. The key data file generation device according to claim 8, wherein the keyword delimiter storage unit holds a series of data written continuously before and after the key data in the data file. A key data file generation device characterized by the above-mentioned. 11. The key data file generating apparatus according to claim 8, wherein said keyword delimiter storing means stores a list of data to be used as key data. 12. A data file generating method for generating a search data file from a data file, the method comprising analyzing an input of a file name of a data file of a document to be processed created by a word processor, CAD, or the like, and expanding the data file. Child and the other data are separately stored, the data of the stored extension is written in a data file, the data file to be processed is read, and key data is extracted by a predetermined key data delimiter, The size of the extracted key data and the data of the relative position in the data file of the data are stored, and the data of the relative position of the stored key data and the data size are written in the key data file. Key data file generation method. 13. A document data search method for extracting a target data file from a data file storage device holding a data file of a document created by a word processor, CAD, or the like, wherein the key data file generation according to claim 8. Depending on the device,
2. A document data search device according to claim 1, wherein a key data file for holding information necessary for extracting key data serving as a search key in the data file is created in the data file storage device. A document data search method characterized by extracting a data file to be searched.