JP2000099545A - Manufacture of recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily manufacture a recording medium where the corresponding relation of a place in which a parts list, a drawing and parts are filled is recorded at every part by generating the corresponding relation between the describing place in the parts list and the display part of a code number on the drawing at every part based on a recognized result and code number information. SOLUTION: Data on a parts list, a drawing and code number information are inputted to a computer CMP. The computer CMP executes a drawing analysis processing at first. A code number is extracted from the drawing by character recognition and a position on the drawing in which the code number is described is specified. One group of data where the display part of the code number or a part display range on the specified drawing, the number of the drawing and the code number are made to correspond one another is generated at every code number. Then, a corresponding relation generation processing is started. The describing position in the parts list, the code number display or the part display range on the drawing are made to correspond one another at every part described in the parts list.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a recording medium on which information about a product and parts constituting the product is recorded in a readable manner.

[0002]

2. Description of the Related Art When trying to repair an industrial product,
In order to obtain the necessary parts, it is necessary to identify the parts by examining a parts list describing the parts used in the product and a drawing showing the shape and location of each part. 2. Description of the Related Art In order to facilitate the operation of specifying necessary parts, it is widely practiced to record a parts list and drawings on a recording medium such as a CD-ROM and search them using a computer.

When searching for parts with a computer,
First, a parts list is displayed on a computer screen to check the names and required numbers of parts, and then drawings are displayed on the screen to confirm the shapes of the parts and locations where the parts are used in the product. Alternatively, based on the shape of the part, the part is first specified in the drawing, and then the name and the required number of the part are confirmed in the parts list.

[0004] Which part on the drawing corresponds to each part described in the parts list can be known by the number assigned to each part. For example, when examining the shape of a part listed in the parts list,
Check the part number of the part and find the part with the same number on the drawing. In order to know the names of the parts described in the drawings, the parts with the same reference numbers as those in the drawings are searched from the parts list.

If it is attempted to check both the parts list and the drawings while associating the parts with the parts using the reference numbers, the types of parts and the number of drawings are large.
A great deal of effort is required to find the desired part. Therefore, in order to improve the task of searching for parts, a place where each part is described in the parts list is associated with a place in the drawing where each part is displayed, and the data is stored in a CD-ROM or the like. It is to be recorded.
When performing a search operation, this data is read from a CD-ROM into a computer so that, for example, when a part in a parts list is specified, a corresponding part in the drawing is immediately displayed, or conversely, a part in the drawing is specified. Then, it is possible to immediately display the corresponding part of the parts list. In this way, even if the operator who is trying to identify the parts required for repair is not accustomed to handling the computer, the intended parts can be easily found.

[0006]

However, data for associating a place where an individual part is described in the parts list with a place on the drawing where the corresponding part is displayed is manually processed by a human for each part. Therefore, there is a problem that it takes a lot of time to create data. As a result, the production of a recording medium on which such data is recorded requires a great deal of labor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem in the prior art, and shows a correspondence between parts, a drawing, and a place where parts are described on each part. An object of the present invention is to provide a technique for easily manufacturing a recording medium on which data is recorded.

[0008]

Means for Solving the Problems and Their Functions and Effects In order to solve at least a part of the above-mentioned problems, a method for manufacturing a recording medium according to the present invention employs the following configuration. A method for manufacturing a recording medium according to the present invention is a method for manufacturing a recording medium in which information about a product and components constituting the product are recorded in a readable manner, wherein the configuration of the product and the components constituting the product is included. A part list describing the relationship, and a drawing that displays the shape of the part and three positional relations to each other and a number indicating the part, read the part, and the drawing number describing the part, In the drawing, code number information indicating a correspondence between the code number and the code number indicating the part is input, and based on the character recognition result of the input drawing or the character code included in the drawing, Recognize the displayed location of the code number and, based on the recognition result and the code number information, for each component, the correspondence between the described location in the parts list and the display position of the code number on the drawing Generating a relationship, the correspondence and the And Tsurisuto, and summarized in that for recording and the drawing on a recording medium.

In such a method of manufacturing a recording medium, a parts list, a drawing, and code number information are input. In the parts list, constituent parts are described for each product, and in the drawings, in addition to the shapes of the parts, positional relationships between the parts and reference numerals indicating the parts are described. The code number information includes parts and
The information includes the number of the drawing in which the part is described and the number that indicates the part in the drawing, which corresponds to three parts. When these parts list, drawing, and code number information are input, the code numbers are extracted from the drawing by character recognition, and the positions on the drawing where the respective code numbers are displayed are recognized. Based on the recognition result and the code number information, a correspondence relationship between the description position in the parts list and the display position of the code number on the drawing is generated for each component. Here, for example, when the drawing is given as electronic data, the display position of the code number may be recognized based on the character code in the electronic data. If the generated correspondence is recorded on a recording medium together with the parts list and the drawings, it is possible to easily manufacture a recording medium on which such information is recorded.

After recognizing a display position of a code number on the drawing, a line segment having an end point within a predetermined range from the display position is recognized as a lead line extending from the code number,
The closed area indicated by the leader line may be recognized as a range in which the corresponding component is displayed. From the component display range and the code number information recognized in this way, for each component, a correspondence relationship between the description position in the parts list and the component display range on the drawing is generated. By recording the correspondence thus generated together with the parts list and the drawing on a recording medium, a recording medium on which such information is recorded can be easily manufactured. In the recording medium manufactured in this manner, the description location in the parts list and the display range on the drawing are recorded in association with each component, so that, for example, a component search operation is easily performed using a computer. be able to.

Here, the description position of each part in the parts list and the display position of each part on the drawing are associated by the correspondence relationship generated as described above. It is sufficient to record only the information without the number. In this way, for example, when a large number of parts are described and the drawing becomes complicated, it is possible to avoid complication of the drawing by deleting the reference numbers and the lead lines in the drawing. Especially when the drawing is given as CAD data,
It is preferable that only the number and the lead line can be easily deleted from the drawing by using a method such as writing the reference number and the lead line on a layer different from the component shape. Of course, the drawing with the reference number described may be recorded on the recording medium. Furthermore, the number information may be described in the parts list, and the parts list including the number information may be recorded on a recording medium.

Further, a drawing and a part display range of the drawing are superimposed and displayed on a screen, and a new area is designated by a pointing device capable of designating a position on the screen.
The recognized component display range may be corrected. By overlaying the drawing and the component display range on the screen in this way, it is possible to easily find a component for which the recognition of the component display range is not appropriate, and to specify an appropriate region using a pointing device to display the component. The range can be easily modified. By using the corrected part display range, a correspondence between the description position in the parts list and the display range on the drawing is generated for each part, and the generated correspondence is recorded on a recording medium together with the parts list and the drawing.
It is possible to easily manufacture a recording medium on which accurate information is recorded.

[0013]

DETAILED DESCRIPTION OF THE INVENTION Overview of Recording Medium Manufacturing Method An embodiment of the present invention will be described based on examples. FIG.
FIG. 2 is a process chart showing an outline of a method for manufacturing a CD-ROM as an embodiment of the present invention. The equipment used in each step is also conceptually shown on the left side of FIG. As shown in FIG. 1, the manufacturing method according to the present embodiment includes two steps of a data creation step (step SA) and a printing / copying step (step SB). Data creation process (process SA)
Is a process for creating data to be recorded on the CD-ROM using the computer CMP. The data input process (step S100) and the drawing analysis process (step S20)
0) and a correspondence generation process (step S300). Baking and duplication process (process SB)
Is a step of copying a CD-ROM on which data created in the data creation step (step SA) is recorded. The printing process (step S400) performed using a stamper manufacturing machine (MA) and the copying of the CD-ROM are performed. It consists of two processes of a duplication process using the machine (MB) (step S500). Hereinafter, the contents of these processes will be described in detail.

In the CD-ROM manufacturing method according to an embodiment of the present invention, first, data on a parts list, drawings, and code number information is input to a computer CMP (step S100). The data relating to the parts list and the code number information is usually recorded as electronic data on a recording medium FDMO such as a flexible disk or a magneto-optical disk, and is input to the computer CMP via these. Data related to drawings are usually drawn on drafting paper, etc.
It is recorded in a format that can be seen by humans, and the scanner SC
After converting to electronic data with N, input. However, the drawing is C
When the data is stored on a flexible disk or the like as electronic data such as AD data, the data can be directly input to the computer without passing through the scanner SCN.

When the input of necessary data is completed, the computer CMP analyzes the input drawing (step S200). Although details will be described later, in this process, a character number is extracted from the drawing by character recognition, and the position on the drawing where the character number is described is specified. In this process, the component display range may be specified or the specific range may be corrected. Data for associating the display position or the part display range of the code number on the drawing specified in this way with the drawing number and the code number is created for each code number, and the drawing analysis process ends.

When the drawing analysis processing is completed, the correspondence generation processing is started (step S300). In this process, for each part described in the parts list, the description position in the parts list is associated with the number display location or the parts display range on the drawing. The details of this association will be described later.

The correspondence thus obtained is recorded on a CD-ROM together with the parts list and drawings in the next printing / copying step (step SB). This baking
For the duplication step (step SB), a method generally used in the manufacture of a CD-ROM can be used. That is, the data created in the data creation step (step SA) is first burned onto the master CD-ROM, and the master CD-R
A stamping die called a stamper is created from the OM (step S400). Next, the stamper is set on a CD-ROM duplicator (MB), and a CD-ROM in which the same contents as the master CD-ROM are recorded is manufactured by injection molding (step S500).

In this embodiment, the recording medium is a CD-R
The case of recording on OM will be described, but the recording medium is CD-R.
The recording medium is not limited to the OM, and may be another recording medium on which a large amount of data can be recorded, such as a magneto-optical disk.

B. Data Input Processing (1) Parts List FIG. 2 shows a part of a parts list of a home washing machine as an example of a parts list used in the present embodiment. One washing machine is composed of many parts,
Each part has a part name and a part number. The component name is a name given so that the function, shape, etc. of the component can be easily imagined, and a name similar to a common name is often given. For this reason, for example, when components have the same function, different components may be given the same component name. On the other hand, the part number is a unique number assigned to each part, and the same part number is not assigned to different parts. For example, in the parts list of FIG. 2, a part named “insulator” is described in two places. One part is an insulator for a stirring rod, and the other part is an insulator for a dewatering tank. Different part numbers are assigned. The part numbers are often expressed by combining alphanumeric characters as shown.

In the parts list, the individual parts constituting the product are classified hierarchically. This will be described with reference to the parts list of FIG. 2 as an example.
The home washing machine "-3" is composed of assemblies such as a "washing tub assembly", a "drive unit assembly", and a "display unit assembly". Also, each assembly is often composed of a plurality of subassemblies. The structural relationships among assemblies, subassemblies, parts, and the like are indicated by broken lines in the parts list as shown in FIG. For example, "Washing tub assembly" in FIG.
Follow the dashed line extending down from the "washing tank assembly"
Is composed of four components: a "stir bar subassembly", a "dewatering tub subassembly", a "washing tub", and a "screw". Similarly, if the dashed line extending from the “stir bar subassembly” is traced, this indicates that the “stir bar” and the like 6
It can be seen that it is composed of three parts. Further, although not shown in the example of FIG. 2, the component may include some components as components, and in such a case, a broken line extending from the component indicates that the component is included.
Also, these assemblies and subassemblies are given unique part numbers similarly to the parts.

In addition, the parts list also has a column for describing the number of parts required to assemble one product. In the example of FIG. 2, in order to assemble a home washing machine of product type "RPT-3", for example, one "stirring bar", "dehydration tub", and "washing tub" are provided one by one and the part number "DPR-3".
It can be seen that four screws 341602 are required.
The parts list also describes the unit prices of spare parts, that is, the price per unit when the parts are purchased not as products but as parts.

As described above, in the parts list, all parts necessary for assembling the product are described.
The parts list for one product can be quite large. Since a plurality of types of products are listed together in the parts list, the amount is enormous, and it is not unusual for the total number of parts to be described to exceed 100,000.

(2) Drawing As an example of a drawing in this embodiment, a product type “RPT”
FIG. 3 shows a drawing corresponding to the portion of the washing tub assembly of the home washing machine denoted by "-3". Referring to FIG. 3, it is possible to immediately know what kind of parts the washing tub assembly is made of, what kind of appearance each part has, and where it is used. As described above, if the drawings are examined, not only the components but also their general shapes and locations of use can be understood at once, and in that sense, it is more convenient than the parts list.

Such drawings are made at various levels as needed. The example of FIG. 3 is a case where the components included in one assembly are represented in one drawing. However, if necessary, a drawing is created for each subassembly and further for each part. There is also. In addition, when an assembly includes many parts and the drawing becomes complicated when expressed by one drawing, a plurality of drawings may be created in one assembly. As a result, the drawings are prepared as needed, and as a result, a considerable number of drawings are prepared for only one product. Since several kinds of products are listed in one drawing collection, the drawing collection is enormous, and it is not unusual that more than 1000 drawings are included in one drawing collection.

As shown also in FIG. 3, each part described in the drawing is numbered. Further, one drawing is assigned a unique drawing number. When one combination of the drawing number and the code number is determined, one component can be specified. Referring to FIG. 3 as an example, the reference numeral “20” in the drawing number “WXA2051” indicates the product model “R
PT-3 "refers to a stirring rod of a home washing machine. As described above, each part is assigned a unique part number. Therefore, specifying a part by a combination of a drawing number and a code number means that one part number is specified. In other words, if one part number is determined, in principle, at least one set of the drawing number and the code number is determined. The reason why "in principle" is used is that small parts such as screws may be omitted from the drawing without misunderstanding, and "at least one" means that general-purpose parts are used in a plurality of places. This is because it may be used. The correspondence between the combination of the drawing number and the reference number and the part number is summarized as the reference number information described below.

(3) Code number information As an example of the code number information, FIG. 4 shows a part of the code number information relating to the parts exemplified in FIG. The code number information according to the present embodiment includes four elements: a component number, a component name, a drawing number, and a code number. Referring to the reference number information in FIG. 4, for example, it can be seen that the part “cap” with the part number “DPR341365” is provided with the reference number “10” in the drawing with the drawing number “WXA2051”. Conversely, the reference number “20” in the drawing number “WXA2051”
It can be seen that this is the “stirring bar” with the part number “DPR341599”. In this manner, each part in the drawing is associated with the respective part number via the code number information, and each part number described in the parts list is specified with a specific part in the drawing via the code number information. Is associated with.

When examining the part number based on the drawing number and the code number, it is convenient to use the code number information sorted and displayed in the drawing number order as shown in the example of FIG. ,
When examining the drawing number and the number from the part number, it is convenient to use the number information sorted and displayed in the order of the part number.

As described above, the code number information describes the corresponding drawing number and code number for each component number and component name. Subsequently, corresponding drawing numbers and reference numbers may be described. In this way, it is possible to create the number information integrally with the parts list, and in many cases, it is created in this way. However, in the present embodiment, the locations where individual components are described in the parts list and the locations where those components are displayed in the drawing are recorded in association with each other. Therefore, after this association is generated, it is no longer necessary to use the number information to associate the parts in the parts list with the parts in the drawing, and the number information can be deleted. If the part corresponding to the code number information is deleted from the parts list, the amount of information to be recorded can be reduced. If the parts list and the code number information are separately created from the beginning as in the present embodiment, it is preferable because such an effect can be obtained by recording only the parts of the parts list. .

C. Drawing Analysis Processing (1) Contents of Drawing Analysis Processing When the three inputs of the part list, the drawing, and the code number information are completed, as shown in FIG. 1, the drawing analysis processing (step S20)
Perform 0). FIG. 5 shows a flowchart of the drawing analysis process in this embodiment. In this process, a character number is automatically extracted from the drawing by using character recognition, and the display position of the code number on the drawing is specified. The display position of the code number refers to, for example, a rectangular area including the outline of the character string described as the code number. Of course, it may be a region wide outside the outer periphery of such a rectangular region by a certain width, or the outline of the character string itself. Furthermore, a circular area having a center substantially at the center of the character string,
It may be an elliptical area. The details of character recognition will be described later.

When the display position of the mark number is specified on the drawing,
This time, the display range of the component indicated by the reference number is automatically recognized as follows (step S240). FIG.
FIG. 9 is an explanatory diagram of a component display range recognition process in the embodiment. First, in this processing, a line segment having an end point within a predetermined range from the code number display location is recognized as a lead line Ld. As shown in FIG. 6B, even when a plurality of lead lines Ld appear from the reference number, if a proper range is designated in advance, the plurality of lead lines Ld can be correctly recognized.

Next, it is recognized that the closed area intersecting with the lead line Ld is the illustrated area of the component indicated by the lead line Ld. Here, since the lead line Ld does not necessarily intersect with the component on the drawing, it is also preferable to recognize a closed region within a predetermined range from the end point of the lead line Ld as the illustrated region of the component.

The illustrated region of the component thus recognized may be used as the component display range as it is, but in this embodiment, as shown in FIG. 6, a polygonal region including the illustrated region is recognized as the component display range Ra. By representing the component illustration area with a polygon as described above, the data amount representing the component display range can be reduced, and the process of correcting the component display range described below can be simplified. As shown in FIG. 6B, when there are a plurality of lead lines Ld, there are also a plurality of polygons representing the component display range Ra. In the present embodiment, the component display range Ra is represented by a polygon, but other methods such as a closed region surrounded by a spline curve having the vertices of the polygon as management points are used. Is also good.

The component display range Ra thus automatically recognized
Is superimposed on the input drawing and displayed on the screen of the computer CMP. In this way, the corresponding component display range Ra is displayed on the component shape described in the drawing, so that if the result of automatic recognition is inappropriate, this can be easily found. FIG. 7A shows an example in which the automatically recognized component display range Ra is inappropriate. In this example, the washing tub and the packing are overlapped to form one closed area, and therefore, the part display range corresponding to the number 33 of the packing is erroneously recognized. If the automatically recognized component display range Ra is superimposed on the drawing and displayed on the screen, such an error can be easily found.
When it is necessary to correct the component display range Ra, a pointing device such as a mouse MUS is used to change
An appropriate polygon is designated as shown in FIG. The designated area is set as the corrected component display range Rb, and the automatically recognized component display range Ra is replaced with the component display range Rb (step S260).

In the embodiment described above, the part display range is recognized and corrected during the drawing analysis processing.
These can be omitted. Even if the recognition of the component display range is omitted, the description of each component in the parts list and the display of the number indicating the respective component in the drawing are recorded in association with each other. This is because it is easy to find the reference number corresponding to the part in the drawing, so that the display position of the part can be easily found.

(2) Automatic Number Recognition by Character Recognition In the character recognition processing in this embodiment, various methods widely used in practice can be applied. FIG. 8 shows a typical flowchart of the method. Generally, in character recognition, not limited to the present embodiment, an image to be recognized is treated as a digital image. That is, an image including characters is divided into small squares like a grid (hereinafter, referred to as pixels), and gradation information is given to each of the pixels, and the image is divided into gradations. It is treated as a set of these pixels having information. For example, gradation information of “1” is given to a pixel on which a line diagram or a character is drawn, and gradation information of “0” is given to a pixel without a line.

In such a digital image, a character should be represented as a sequence of a certain number or more of pixels. Pixels that exist only in isolation or pixels with a small number of repeats are not characters. Considered noise. When the character recognition processing is started, such noise is first removed in preprocessing (step S222). Further, when an image is optically distorted when an image is input via the scanner SCN, such a distorted image may be corrected during preprocessing.

Also, in a digital image, as in a normal drawing, lines constituting characters have a thickness. On the other hand, in character recognition, the connection of the center lines of the lines constituting the character is important, and information on the thickness of the line is not usually required. Therefore, as shown in FIG. 9, it is common to perform character recognition after converting an image whose character is to be recognized into an image having connected center lines. In the preprocessing, such a process called thinning is also performed.

When these pre-processes are completed, a process called segmentation is performed (step S244). In this processing, processing is performed to cut out individual images for character recognition from the thinned image. In the example shown in FIG. 9, “4”,
The image is divided into three images corresponding to “1” and “2”.

After the individual images are separated by the segmentation process, the features of each image are extracted (step S226). Many methods for extracting features have been put to practical use, and they can be applied to this embodiment. An example of feature extraction of the present embodiment will be described using the right side of FIG. 9 as an example. In this method, a character is recognized by extracting characteristic points such as an end point C1 and an intersection C4 from an image after thinning. In addition, a bending point C2, a branch point C3, and the like are also used as feature points. Characters can be recognized based on the number of these feature points. In the example shown in FIG.
An image having two 1s and one intersection C4 can be recognized as “4”. Both "1" and "2" have two end points C1 and cannot be identified only by the number of feature points, but can be identified by the direction of the pixel extending from each feature point. That is, it can be recognized as “1” if the pixel extends vertically from each end point C1, and “2” if it extends in the upper right direction and left direction.

As a method of feature extraction, in addition to the above-described methods, many methods such as a correlation mask method and a marginal distribution method are known, and it is preferable to use these methods.

After recognizing individual characters as described above, it is examined whether the recognition result is valid as a character string. For example, if it is known in advance that the sign number is represented by only three digits or less, consider whether the number of digits of the character string is three digits or less, or whether or not the alphabet is included. I do. As a result of the examination, when it is determined that the result of the character recognition is not appropriate, the conditions used in the noise processing and the thinning processing are corrected, and the character recognition is performed again from the preprocessing (step S222) in FIG. In the post-processing (step S228), which is the final stage of the character recognition processing, these determinations are made to improve the reliability of character recognition.

D. Correspondence Relationship Generation Processing As shown in FIG. 1, the drawing analyzer processing (step S20)
0) is completed, the correspondence generation processing (step S30)
0) is started. In the correspondence generation process, the description location of each part in the parts list is associated with a specific area on the drawing where each part is described. The specific area on the drawing is, for example, a rectangular area surrounding the character string of the mark number when only the display part of the mark number is recognized in the drawing analysis process, and when the part display range is recognized. ,
For example, a recognized polygon area. These regions are represented by a sequence of numbers representing the coordinates of each vertex, with a predetermined point in the drawing as the origin. In the correspondence generation process,
The column of numbers is associated with the location described in the parts list.

FIG. 10 shows a flowchart of the correspondence generation processing in this embodiment. First, a part drawn in a specific area on the drawing is specified (step S3).
02). Since the reference number indicating the specific area and the drawing number are known, the reference number information can be searched to specify the part number of the drawn part.

If the parts list is searched using the part numbers specified in this way, it is possible to know the places described in the parts list (step S304). The description part in the searched parts list is specified as follows. FIG.
FIG. 4 is an explanatory diagram showing a data format in which individual parts are stored in a parts list. In the parts list, each part is stored as a group of data on items such as a part number, a part name, a quantity, a unit price of a spare part, and a parent record number. Such a group of a plurality of data is called a record. Each record is given a serial number called a record number. When the part A described in a certain record is a component part of another part B, the record number of the part B is written in the part where the parent record number is described in the record of the part A. As described above, the configuration relation of the parts represented by the parts list is stored as the dependency relation of each record. The application program that displays the parts list rearranges the sequentially numbered records in accordance with such a dependency, thereby displaying the records in a format that is easy for humans to understand as shown in FIG. As can be understood from the above description, by specifying the record number, it is possible to specify the location described in the parts list.

In the correspondence generation processing shown in FIG. 10, a number string indicating a specific area of a drawing obtained as a result of the drawing analysis processing and a record number indicating a place described in a parts list are recorded as a set of data. By doing so, the parts list is associated with the display location in the drawing (step S306).

By using the method described above, it is possible to easily manufacture a CD-ROM in which a parts list, a drawing, and the correspondence between the parts described in each part are recorded. By reading necessary information from the CD-ROM thus manufactured into a computer and searching for parts from a parts list or a drawing on a computer screen, the time required for the search can be greatly reduced. FIG. 12 shows an example of performing the component search in this way. In this example, the screen of the computer is divided into two areas, left and right, and a drawing is displayed in the left half and a parts list is displayed in the right half simultaneously. On the left side of each area, a list of drawings and parts lists is displayed. By specifying a drawing or parts list from the list, the drawings or parts lists displayed on the screen can be switched. When an arbitrary part described in, for example, a parts list is designated on such a screen, the drawing is immediately switched, and an area surrounding the corresponding part (an area surrounded by a broken line in FIG. 12) blinks. By searching for parts in this way, even if the parts list and drawings are enormous, the part being sought can be found immediately.

Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment.
Implementation in various forms is possible without departing from the gist of the invention. For example, the recording medium is not limited to the CD-ROM described above, but may be a magneto-optical disk, a magnetic tape, a memory card, or the like.

[Brief description of the drawings]

FIG. 1 is a process chart showing an outline of a CD-ROM manufacturing method as an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of a parts list used in the embodiment of the present invention.

FIG. 3 is an explanatory diagram showing an example of a drawing used in the embodiment of the present invention.

FIG. 4 is an explanatory diagram showing an example of code number information used in the embodiment of the present invention.

FIG. 5 is a flowchart of a drawing analysis process in the embodiment of the present invention.

FIG. 6 is an explanatory diagram of a component display range recognition process according to the embodiment of the present invention.

FIG. 7 is an explanatory diagram of a component display range correction process according to the embodiment of the present invention.

FIG. 8 is a flowchart of a character recognition process according to the embodiment of the present invention.

FIG. 9 is an explanatory diagram of a character recognition process in the embodiment of the present invention.

FIG. 10 is a flowchart of a correspondence generation process in the embodiment of the present invention.

FIG. 11 is an explanatory diagram showing a data format of a parts list in the embodiment of the present invention.

FIG. 12 shows a CD-RO manufactured by the method of the present embodiment.
FIG. 9 is an explanatory diagram illustrating an example of a component search performed using M.

[Explanation of symbols]

 C1 ... End point C2 ... Bending point C3 ... Branch point C4 ... Intersection point CMP ... Computer FDMO ... Recording medium Ld ... Outline MA ... Stamper manufacturing machine MB ... CD-ROM duplicator MUS ... Mouse Ra ... Recognized component display range Rb ... Modified parts display range SCN ... Scanner

Claims (4)

[Claims] 1. A method of manufacturing a recording medium in which information on a product and parts constituting the product are recorded in a readable manner, wherein the parts describe the structural relationship between the product and the parts constituting the product. A list and a drawing that displays the shape of the part, the positional relationship between the parts, and three numbers indicating the part are read, and the part, the number of the drawing that describes the part, and the drawing in the drawing. Code number information indicating a correspondence between the code number indicating the part and the code number indicating the part is input, and the code displayed on the drawing is input based on the character recognition result of the input drawing or the character code included in the drawing. No. display position is recognized, and from the recognition result and the code number information, for each component, a correspondence relationship between the description position in the parts list and the code number display position on the drawing is generated, The correspondence and the parts list Manufacturing method of a storage medium for recording and the drawing on a recording medium. 2. The method for manufacturing a recording medium according to claim 1, wherein a line segment having an end point within a predetermined range from a display position of each code number on the drawing indicates a component corresponding to the code number. Recognize as a leader line, recognize the closed area pointed to by the leader line as a part display range, and, based on the recognition result and the code number information, for each part, a description location in the parts list and a position on the drawing A method of manufacturing a recording medium for generating a correspondence relationship with the component display range, and recording the correspondence relationship, the part list, at least a component shape in the drawing, and a mutual positional relationship on the recording medium. 3. The method of manufacturing a recording medium according to claim 2, wherein the drawing and the component display range recognized for a component in the drawing are displayed on a screen so as to overlap each other. A method for manufacturing a recording medium for correcting the component display range by designating a new area by using a pointing device capable of designating a position. 4. The recording method according to claim 2, wherein the code number information is described in the parts list, and the code number information is input by reading the parts list. The method of manufacturing the medium.