JPH06259490A - Circuit pattern information preparing device - Google Patents

Abstract

PURPOSE:To provide a circuit pattern information preparing device in which a circuit pattern drawing having an attribute can be easily prepared for each circuit. CONSTITUTION:In a linear data generator 1, an image scanner 1-1 automatically reads a circuit pattern original drawing, a pattern recognizing module 1-2 generates a digital image signal, a linear data picture processor 1-3 prepares linear data, and a RAM (I) 1-4 stores the linear data. In a data converter 2, the linear data are read from the linear data generator 1, face data are prepared, and outputted to an attribute information preparing device 3. In the attribute information preparing device 3, a closed face data picture processor 3-1 operates the processing of the complement of the discontinuous points of the face data, attribute application, and printing-output based on an instruction inputted from a keyboard 3-3, and a RAM (II) 3-2 stores the completed data. The completing work of the discontinuous points of the face data is shared by input terminals PCi ((i) = 1, 2,... n), and operated in parallel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit pattern information preparation apparatus for displaying or printing out by adding an attribute to a circuit pattern on a printed circuit board.

[0002]

2. Description of the Related Art Conventionally, there is known an apparatus for automatically reading an original drawing of a circuit pattern on a printed circuit board or the like and drawing a contour of the pattern. Such a circuit pattern is
If attributes are given to each circuit and color-coded and displayed, it is convenient because it is easy to check after design change.

[0003]

However, the above-described apparatus for drawing the contour of the pattern merely generates line data for display and printing, and does not create plane data for each circuit. , Attributes cannot be assigned to each circuit.

In order to add attributes to these, it is necessary to create surface data by tracing the contour of the circuit pattern original drawing with a digitizer or the like. Inputting these surface data is all manual work, but in order to assign attributes to each surface data using a computer in the subsequent processing, each surface data must be a closed surface. I won't. Even if the contour line represented by the surface data is visually closed on the screen display, if the data inside the computer is open and discontinuous, the attribute given to this surface data will be It leaks from the continuous point to the surroundings and causes inconvenience. Therefore, the work of inputting surface data by the above-mentioned digitizer requires skill and is an extremely troublesome work, resulting in a reduction in design efficiency.

The present invention has been made in view of the above-mentioned conventional circumstances, and an object of the present invention is to provide a circuit pattern information creating apparatus which can easily create a circuit pattern diagram having an attribute for each circuit. Is to provide.

[0006]

According to a first aspect of the present invention, there is provided a circuit pattern information creating apparatus for outputting two-dimensional vector line data based on raster data obtained by automatically reading an original drawing. And surface data output means for outputting surface data composed of at least point data and line data based on the vector line data output by the line data output means, and surface data output by the surface data output means. Closed area data output means for outputting closed area data formed by generating line data connecting any other point data or line data from discontinuous points of the line data, and output by the closed area data output means Means for storing closed area data for each attribute data given by input, and closed area for each attribute data stored in the storage means Composed of an output means for displaying or printing over data.

According to a second aspect of the present invention, there is provided a circuit pattern information producing apparatus, wherein the line data output means, the surface data output means,
The closed area data output means, the storage means and the output means are provided with a plurality of surface data output by the surface data output means, and a predetermined display data is added to the discontinuous point data of the line data forming the surface data. It further comprises control means for causing the closed area data output means to output the closed area data output from the plurality of closed area data output means to the storage means.

[0008]

In the circuit pattern information generating apparatus according to the first aspect of the invention, the line data output means outputs two-dimensional vector line data based on the raster data obtained by automatically reading the original drawing. Based on the vector line data, the face data output means outputs face data including at least point data and line data. The closed region data formed by generating line data connecting any other point data or line data from the discontinuous points of the line data forming the surface data is output by the closed region data output means. The closed area data is stored by the storage unit for each attribute data given by the input. Then, the output unit displays or prints the closed region data for each attribute data stored in the storage unit.

In this way, a circuit pattern diagram having attributes for each circuit is easily created.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of an embodiment according to the present invention.

In FIG. 1, the image vector line data generator 1 automatically reads a circuit pattern original drawing as shown in FIG. 2 (a) and outputs an electric signal corresponding to the read original image of the circuit pattern. Generated image scanner 1-1, pattern recognition module 1-2 for generating a digital image signal from an electric signal input from the image scanner 1-1, and a digital image signal generated by the pattern recognition module 1-2 A line data image processing device 1-3 that extracts thin line data, creates vector line data, and performs line data image creation processing,
And a RAM (I) 1-4 for storing vector line data created by the line data image processing apparatus 1-3 as a line data image processing L file 2a described later.

The data converter 2 has an image vector line data generator 1 connected to its input side and a closed region attribute data generator 3 connected to its output side. Then, the L file 2a for line data image processing is read from the image vector line data generator 1 and the L file 2 is read.
The line data of a is analyzed and, in detail, is output to the closed region attribute data creation device 3 as line data of a closed surface data image processing D file 2b described later.

The closed area attribute data creation device 3 includes a closed surface data image processing device 3-1 and its closed surface data image processing device 3.
RAM (II) 3-2 connected to -1 to store the closed surface data image processing D file 2b, and processing such as line data complement, attribute addition, and print output of the closed surface data image processing D file 2b It comprises a keyboard 3-3 for instructing, and a plotter 3-4 for printing the circuit pattern information by the print output from the closed surface data image processing device 3-1.

FIG. 3 (a) is a configuration diagram of the line data image processing L file 2a stored in the RAM (I) 1-4 of the image vector line data generator 1, and FIG. 3 (b) is the above. 3 is a configuration diagram of a closed surface data image processing D file 2b stored in a RAM (II) 3-2 of the closed area attribute data creation device 3. FIG.

The line data image processing L file 2a shown in FIG. 1 (a) independently represents a line indicating the outline of an image.
It consists of record data, 1 record is header part 2
1 and a data section 22. Header part 21
Is composed of a class part 21-1 indicating the division of the record, a code part 21-2 indicating the shape of the line indicated by the record, and a list part 21-3 indicating the length of the data part 22.
Then, the data section 22 stores a parameter section (i) 22-i (i = 1, 2, ... N) that stores coordinate data representing a line.
Composed of. These line data are shown in FIG. 4 (a), for example.
The cross-shaped image shown in Fig. 2 shows the points (xa-0, ya-0) and
Line A connecting 1 and ya-1) and a point (xb-0, yb-0)
It may be expressed as two line data of a line B connecting the line and the point (xb-1, yb-1). Also, as shown in FIG. 6 (b), the line is divided at the intersection of the crosses, and A , B, C, and D may be represented as four line data. Further, it can be expressed as a one-dot broken line AB and a one-dot broken line DC.

The line data image processing apparatus 1-3 shown in FIG. 1 uses this line data image processing L file 2a as an R file as needed.
It is possible to sequentially read from the AM (I) 1-4 and output the figure as shown in FIG. 2B as data.

Further, for the closed surface data image processing D of FIG.
The file 2b has a completely different file structure from the line data image processing L file 2a of FIG. 9A, and has the same structure as a DLG file for handling closed region data. That is, a header portion 2b-1 for storing data indicating a file structure, a point data portion 2b-2 for storing point data indicating apexes and line ends of a polygonal line, and an area for storing data indicating at least one attribute of a closed area. It comprises a data section 2b-3 and a line data section 2b-4 for storing line data.

Next, FIG. 5 shows an internal configuration of the data conversion device 2. As shown in FIG.
It is composed of a CPU 31 which is a microprocessor and a ROM (Read Only Memory) 32 which stores a program.
The CPU 31 converts the data in the line data image processing L file 2a into the closed surface data image processing D file 2b based on the program stored in the ROM 32.

Next, the processing operation of the CPU 31 for converting the data of the line data image processing L file 2a into the closed surface data image processing D file 2b will be described with reference to the flowcharts of FIGS. 6 and 7. Note that this processing is performed using the registers i and j not shown in the drawing.

In FIG. 6, first, in step S1, the line data image processing L file 2a is read. Next, in step S2, the number of elements is read from the list section 21-3 of the file header section 21 and stored in the register i. Subsequently, the value of the register i is discriminated, and if it is not "0", there is an element to be read, and therefore the process proceeds to step S5. In step S5, the element record i is read, and the element type data at the head of the element i is stored in the read register j. Then, in step S6, the value of the register j is determined. If the value is "1" to "7", the process proceeds to steps S7 to S13, the coordinate data stored subsequent to the element type data of the element record i is read, and the read coordinate data is read. D file for image processing of closed surface data 2
It is transferred to the line data section 2b-4 of b and written in a predetermined position.

The value of the register j is "1" to "7", which indicates a straight line, a broken line, a broken line at 2 points ... A broken line at 7 points, and a broken line at 8 points or more. If the value of the register j is larger than “7” in step S6, the element type represents data other than line, and in this case, the process immediately proceeds to step S14. Next, in step S3, if the value of the register i is "0", all the element records have been read and the processing for one figure has been completed, so the flow advances to step S15 to create surface data and perform processing. finish.

Next, regarding the above-mentioned surface data creation processing,
This will be described with reference to the flowchart shown in FIG. First, in step S51, the D file 2 for the closed surface data image processing.
The line data created in b is read and decomposed into line segments.
In the decomposition processing into this line segment, the read line data is
This is a process in which the line segment is divided into contact points and intersection points with other line data, subdivided into line segments having no contact points or intersection points in the middle, and line segment numbers are given to the respective line segments.

Then, in step S52, the point type of the starting point or the ending point of the line segment is determined. In this process, when subdividing the line data into line segments that do not have contact points or intersections in the middle, the start point or end point of the line segment that is the basis of the subdivision is an isolated point (no connection to other line data), This is a process of recording whether it was a branch point (contact point) or an intermediate point (vertical angle of the polygonal line).

Next, in step S53, the line segments are sorted based on the start point and the end point, and then step S5.
In step 4, these sorted line segments are connected in a fixed direction. The connection direction may be clockwise or counterclockwise. When the end point of the line segment is a branch point, there are a plurality of line segments having the same start point to be connected. By setting the connection direction to one of the predetermined directions in advance, it is possible to automatically select and connect the line segments that together form the surface data from the plurality of line segments.

Then, in step S55, the point type of the end point of the connected line segment is discriminated, and it is the same coordinate as the start point of the first line segment or an isolated point having no line segment to be connected next. If so, the connection process is terminated and the process proceeds to step S56.

In step S56, the surface data constituted by a series of connected line segments is given a surface data number and stored again in the closed surface data image processing D file 2b.
In step S55, if the point type of the end point of the connected line segment is not the same coordinate as the start point of the first line segment and is not an isolated point, the process returns to step S54 to connect the next line segment.

The closed surface data image processing apparatus 3-1 of FIG.
As described above, the surface data stored in the line data portion 2b-4 of the closed surface data image processing D file 2b converted from the line data is read out, and the circuit pattern figure as shown in FIG. 8 is not particularly shown. It can be output to a CRT display device or the like.

Then, the discontinuity of the line indicated by the arrows A, B, ... G in the figure is notified by blinking a predetermined mark or the like, and the keyboard is pressed so that the discontinuity of the line is properly closed. In particular, a correction input can be made by a cursor key (not shown) or a mouse terminal (not shown) connected to a keyboard 3-3 or the like. The line data corrected and supplemented as described above to become the correct closed area surface data is stored again in the line data portion 2b-4 of the closed surface data image processing D file 2b, and at the same time, the point data portion 2b-of the file. The two corresponding point data are also automatically corrected and stored again.

In the circuit pattern graphic data composed only of the closed area created as described above, the numbers are sequentially used by using the keyboard 3-3 in order to specify each circuit, contact point and the like shown in the closed area. Granted. Then, this number is stored in the corresponding position of the area data portion 2b-3 of the same file. Further, by inputting the data indicating the attribute to this number, the attribute is given to the figure specified by the number. Similarly, this attribute data is also stored in the corresponding position of the area data portion 2b-3 of the same file, whereby the predetermined circuit pattern graphic data is completed.

Then, the RA created as described above
The M (II) closed surface data image processing D file 2b is shown in FIG.
Of the closed surface image processing device 3-1 of
The circuit pattern information is output via the plotter 3-4.

In the above-described embodiment, the closed area attribute data creation device 3 is used to perform the correction work for complementing the discontinuous portion of the incomplete circuit pattern figure so as to be closed correctly. However, in the case of a circuit pattern with an extremely large number of circuits, the display screen for correction input may have a configuration of several tens of screens, and since this correction work was performed by one device, it took time. It is not possible to fully exert the effect of shortening the work time by automating the work of creating the plane data of a corner.

This correction work is distributed to a plurality of correction data input devices to be corrected, and the corrected correct circuit pattern figure is input again to the closed region attribute data generation device 3 so that the closed region attribute data generation device 3 receives the correction circuit pattern data. If the subsequent attribute assigning process is performed, the work time for correction is greatly reduced, and the effect of time reduction is further increased.

This will be described below as another embodiment.
FIG. 9 is a configuration diagram of another embodiment. The same parts as those in the configuration of the previous embodiment shown in FIG. 1 are designated by the same reference numerals.

In the figure, the data converter 2 includes a plurality of personal computers 4-1 (PC1), 4-2.
(PC2) ... 4-n (PCn) is connected.
Of course, an ordinary terminal device can be used instead of the personal computer.

The data converter 2 is a closed surface data image processing D created based on the line data image processing L file 2a output from the image vector line data generator 1.
An M file 2c for closing surface correction, which will be described later, is created from the file 2b, divided for each display screen, and output to each personal computer PCi (i = 1, 2 ... n),
The corrected data output from each personal computer PCi is output to the closed area attribute data creation device 3 as the data of the closed surface data image processing D file 2b.

FIG. 10 is a block diagram of the PCi. In the figure, a CPU 4-i-1 is composed of a microprocessor and controls the entire device based on a program stored in a ROM 4-i-2. The RAM 4-i-3 has a storage area for the closed surface data correcting M file 2c and a work. CRT (CRT display) 4-i-
4 is a RAM 4-based on the control of the CPU 4-i-1.
The data (for example, the circuit pattern figure as shown in FIG. 8) of the M-3 file 3c for closing surface correction of i-3 is displayed.
The mouse 4-i-5 can display a cursor at an arbitrary position on the screen of the CRT 4-i-4 and input the coordinate value of the position.

The closed surface data image processing D file 2b shown in FIG. 3 (b) is shown in FIG. 11 (a) again, and in FIG. 11 (b),
The data structure of the closed surface data correction M file 2c created based on the closed surface data image processing D file 2b is shown.

In FIGS. 1A and 1B, the closed surface data correction M file 2c stores a file number for identifying which D file 2b the data is read from. -1, an isolated point data part 2c-2 which stores predetermined symbol data (for example, a small yellow circle) centered on the isolated point (discontinuous point) coordinates detected from the point data and line data of the D file 2b , The line data section 2c-4 for storing the line data read from the line data of the D file 2b.

Next, with respect to the second embodiment having the above-mentioned configuration, the operation of the process for creating the closed surface data correction M file 2c performed by the data converter 2 will be described with reference to the flowchart shown in FIG.

In the flowchart shown in the figure, first in step S1201, the closed surface data image processing D file 2b is read, and a file number corresponding to the read D file 2b is created based on the data of the header portion 2b-1. , And stored in the file number portion 2c-1 of the closed surface data correction M file 2c.

Next, in step S1202, it is determined whether or not the file is "end". If it is not "end", the process advances to step 1203 to sequentially read the data of the D file 2b and read the read data. Is point data (data read from the point data section 2b-2 of the D file 2b) or line data (data read from the line data section 2b-4 of the D file 2b).

If it is point data in this determination, the flow advances to step S1204 to determine whether the point data indicates an isolated point. This determination detects whether or not there are two or more line data that connect point data to other point data, and if two or more lines indicate the apex of a polygonal line, and if three or more, contact points (collection point Alternatively, it is determined that none of them are isolated points. Then, when there is only one line data from the point data, it is determined that the point data is an isolated point.

If it is an isolated point in this determination, the process proceeds to step S1205, the coordinates of the isolated point are read out, and subsequently, in step S1206, circle data having a predetermined radius centered on the isolated point is created, The circle data is stored in the isolated point data portion 2c-2 of the closed surface data correction M file 2c, and the process returns to step S1202.

If it is determined in step S1204 that the point is not an isolated point, immediately step S12 is performed.
Return to 02. If the line data is determined in the determination in step S1203, the flow advances to step S1207 to determine the type of line data. And a straight line (coordinates 2 points), a 1-point polygonal line (coordinates 3 points), ... 6-point polygonal line (coordinates 7
Point), or the type of polygonal line of 7 points or more (coordinates of 8 points or more), and based on the determination, step S1
208, S1209 ... S1213, or step S
Proceed to 1214. Then, the point coordinates constituting the line data are read, and step S120 is carried out respectively.
8 ', S1209' ... S1213 'or step S1214', the line data composed of the read point coordinate data is stored in the line data portion 2c-3 of the closed surface data correction M file 2c, and step S1201. Return to.

In step S1202, if the file is "end", the process is immediately ended. In this way, the closed surface data correction M file 2c created is the personal computer PC1, PC2 ... PC of FIG.
n, and is displayed on the screen of those PCi (i = 1, 2, ... N). The operator identifies the discontinuity of the circuit pattern figure by the circle symbol indicating the isolated point, and enlarges the display when the discontinuity is narrow and difficult to visually recognize, and complements the discontinuity with the mouse. To do. The complemented data is stored as new line data in the line data portion 2c-3 of the closed surface data correction M file 2c, and is read by the data conversion device 2 after the work is completed, and the closed region attribute data creation device is created. 3 is output.

[0046]

According to the present invention, vector line data automatically created by reading an original drawing of a circuit pattern can be converted into surface data and the discontinuity can be corrected to create closed area data. Since it can be done quickly and easily, it becomes easy to produce circuit pattern information that specifies each part of the circuit pattern and gives an attribute, and therefore the work of checking the circuit pattern becomes easy and the work efficiency is improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2A is a diagram showing an example of circuit pattern image information read by the image vector line data generator 1, and FIG. 2B is an example of a circuit pattern figure drawn by line data generated based on the image information. Is.

3A is a data configuration diagram of a line data image processing L file 2a of the image vector line data generation device 1, and FIG. 3B is a closed surface data image processing D of the closed region attribute data creation device 3;
It is a data block diagram of the file 2b.

4A and 4B are diagrams illustrating line data.

FIG. 5 is a block diagram showing an internal configuration of a data conversion device.

FIG. 6 is a D file 2b for CPU closed surface image processing.
It is an operation | movement flowchart (1) of creation processing.

FIG. 7 is a D file 2b for CPU closed surface image processing.
It is an operation | movement flowchart (the 2) of creation processing.

FIG. 8 is a diagram showing an incomplete circuit pattern graphic created from surface data input to the closed area attribute data creation device 3;

FIG. 9 is a block diagram showing the configuration of another embodiment.

FIG. 10 is a block diagram showing a configuration of PCi (i = 1, 2, ... N).

11A is a diagram showing a closed surface data image processing D file 2b of the closed region attribute data creation device 3, and FIG. 11B is a diagram showing a data structure of a closed surface data correction M file 2c.

FIG. 12 is an operation flowchart of a process of creating a closed surface data correction M file 2c of the CPU.

[Explanation of symbols]

1 Image Vector Line Data Generation Device 1-1 Image Scanner 1-2 Pattern Recognition Module 1-3 Line Data Image Processing Device 1-4 RAM (I) 2 Data Conversion Device 3 Closed Area Attribute Data Creation Device 3-1 Closed Surface Data Image processing device 3-2 RAM (II) 3-3 Keyboard 3-4 Plotter 2a Line data image processing L file 2b Closed surface data image processing D file 31 CPU 32 ROM 4-1, 4-2 ... 4 -N Personal computer PCi (i = 1, 2 ... n)

Claims (2)

[Claims] 1. Line data output means for outputting two-dimensional vector line data based on raster data obtained by automatically reading an original drawing, and at least based on vector line data output by the line data output means. Surface data output means for outputting surface data composed of point data and line data, and connection from any discontinuous point of the line data constituting the surface data output by the surface data output means to any other point data or line data Closed area data output means for outputting closed area data formed by generating line data, and storage means for storing attribute data given by input to the closed area data output by the closed area data output means And output means for displaying or printing the closed region data for each attribute data stored in the storage means. That the circuit pattern information creating apparatus. 2. The surface data output by the surface data output means is output to a plurality of the closed area data output means by adding predetermined display data to discontinuous point data of line data forming the surface data. 2. The circuit pattern information creating apparatus according to claim 1, further comprising: a control unit that outputs the closed region data output by the plurality of closed region data output units to the storage unit.