JP2000029917A - Parts position conversion system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a parts position conversion system for converting board data constituted of different parts libraries into the board data of an objective parts library. SOLUTION: This system is provided with a parts position inputting means 101 for inputting board data constituted of parts libraries whose original positions or reference directions are different and a parts position correcting means 102 for calculating a rotational correction angle and a coordinate correction value between the inputted parts library and an objective parts library, and outputting board data corresponding to the objective parts libraries.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CAD (Computer Aided) design system for printed wiring boards and the like,
The present invention relates to a component position conversion system.

[0002]

2. Description of the Related Art In CAD design of a printed circuit board or the like,
In general, design is performed by arranging a component library (including component names, symbol shapes, pin information, dimensional information, etc.) registered in advance as a library on board data and wiring between pins.

Conventionally, board data composed of different component libraries has been input as it is without performing position conversion. In this case, if the board data composed of component libraries with different origin positions and placement reference directions is input as it is without converting the component library, it will not be suitable for the target component library and appropriate placement can be performed. May not be.

[0004]

As described above, in the conventional design system, when board data composed of component libraries having different origin positions and reference directions are directly input without performing position conversion, the components are not connected to each other. There is a problem that they overlap.

[0005] The reason is that the component origin and the arrangement direction are different for each component library.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to convert a component data composed of different component libraries into board data of a target component library. It is to provide a system.

[0007]

According to the present invention, there is provided an input means for inputting board data constituted by component libraries having different origin positions and reference directions of the component library, and Correction means for calculating a rotation correction angle and a coordinate correction value with respect to the target component library and outputting board data corresponding to the target component library.

In the present invention, a component mounting coordinate position and a rotation angle are obtained from the board data, and a pin position difference between the components is calculated from a component origin of the component library and a target component library, It is designed to be converted into internal board data in which a target component library is mounted.

[0009]

Embodiments of the present invention will be described below. Referring to FIG. 1, a preferred embodiment to which the present invention is applied is a component position input unit (101) and a component position correction unit (1) mounted on a computer.
02), the component position input / output means (101) inputs board data composed of different component libraries,
The component position correction means (102) calculates the rotation correction angle and the coordinate correction value of the component library, and outputs the board data corresponding to the target component library. Enables conversion to board data of parts library.

The operation of the embodiment of the present invention will be described. First, a step (a) of inputting external board data constituted by an external component library (step 20 in FIG. 2)
1), (b) Step of inputting data of a component library corresponding to the component mounted on the external board data for the external component and the internal component (202 in FIG. 2) (c) Setting reference pins for the external component and the internal component The step of determining (203 in FIG. 2), the step (d) of determining in which area the pin is located among the areas divided by the predetermined unit rotation angle with the reference pin as the origin (204 in FIG. 2), and (e) outside Determining a rotation correction angle between the external component and the internal component from the difference between the pin position of the component and the pin position of the internal component (205 in FIG. 2); (f) correcting the external component by correcting with the determined correction rotation angle Determining a coordinate correction value from the pin coordinates of the internal component (206 in FIG. 2), and (g) correcting the component mounting position of the external board data using the calculated rotation correction angle and the coordinate correction value. , 20 steps (Fig. 2 to be output as a component mounting position of the internal board data of interest
7).

Each of the above processing steps may be realized by a program executed on a computer (100 in FIG. 1). The present invention also includes a recording medium on which the program is recorded.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention;

FIG. 1 is a diagram showing the configuration of one embodiment of the present invention. Referring to FIG. 1, one embodiment of the present invention includes a computer 100 including a central processing unit 103, a data recording device 104, and an input / output device 105, operating under program control, a component position input / output unit 101, And component position correcting means 102. Component position input / output means 1
01 and the component position correcting means 102 may be mounted on a computer that operates under program control and may be included in the computer 100 or may be connected to a network. The component position input / output means 101 and the component position correction means 102 operate as follows.

The component position input / output means 101 inputs board data composed of different component libraries. The component library and board data are referred to as “external component library” and “external board data”.

The component position input / output unit 101 passes the input external board data to the component position correction unit 102, and the component position correction unit 102 outputs the converted data as board data of a target component library. The component library and board data for this purpose are called "internal component library" and "internal board data".

The component position correcting means 102 obtains the component mounting coordinate position and the rotation angle from the external board data, and obtains the component origin coordinates of the external component library and the internal component library from the component origin.
Calculates the difference between pin positions and converts it to internal board data with an internal component library.

FIG. 2 is a flowchart showing a processing flow of an embodiment of the present invention. The operation of one embodiment of the present invention will be described with reference to FIGS.

First, external board data composed of an external component library is input (step A1 in FIG. 2).

Next, the data of the component library corresponding to the component mounted on the external board data is input for the external component and the internal component, and the pin position from the component origin of the pin common to the external component and the internal component is stored in the internal. It is set on the table (step A2).

Further, any one of the corresponding pins is selected.
One is selected as a reference pin (step A3).

Next, the position of each pin is checked with the reference pin as the origin, and in which of the areas divided by the unit rotation angle (α = 360 / n; n = 4, etc.) (Step A4).

Next, the difference between the pin position of the external component and the pin position of the internal component is determined, and the largest (most frequent) difference value is used as the rotation angle correction value, and the rotation correction angle (θc ) Is determined (step A5).

Next, the correction is performed with the determined correction rotation angle, the pin coordinates are obtained again, and the difference / 2 of the area size is determined as the blur correction value from the pin coordinates of the external part and the internal part, and the position of the reference pin is determined. And the coordinate correction value (Xc, Yc)
Is determined (step A6).

Finally, the component mounting position (X, Y, θ) of the external board data is converted to the calculated rotation correction angle (θc).
X ′ = X + Xc Y ′ = Y + Yc θ ′ = θ ′ + θc This (X ′, Y ′, θ ′) is output as the component mounting position of the internal board data. (Step A7).

Next, a specific example will be described. 3 and 4 are explanatory diagrams for specifically explaining one embodiment of the present invention.

As shown in FIG. 3A, a component having a component position (X, Y, θ) as external board data is compared with an external component of a component library as shown in FIG. 3B. Enter data of internal parts. In FIG. 3B, a cross surrounded by a circle indicates the origin position,
The IP (Dual Inline Package) parts are provided with pins of pin numbers 1 to 3 and pin numbers 4 to 6 on both sides, respectively. The mounting position of the external parts is in the horizontal direction in the drawing, and the mounting position of the internal parts is in the drawing. It is vertical. The components are not limited to the DIP type or the like.

Referring to FIG. 3 (C), a hatched pin 1 is a reference pin of the component, and the first pin along the component edge on the side where the reference pin is disposed with the reference pin as the origin. Area R1, R2, R3, R4 defined by a virtual line (X-axis) and a second virtual line (Y-axis) orthogonal (= 90 °) to the first virtual line at the reference pin. Is determined, and the area where each pin is located when viewed from the reference pin is determined. Note that, since 360 degrees are divided into four parts around the reference pin (origin), the component region is divided into four regions by a first virtual line and a second virtual line orthogonal to the reference pin. The number of divisions, that is, n of 360 ° / n, is not limited to 4, but may be further increased according to the shape of the parts.

As shown in FIG. 3D, in the case of an external component, pin 1 belongs to a reference pin (origin), pins 2 to 6 belong to region R1, and in the case of an internal component, pin 1 corresponds to a reference pin (origin). ), Pin 2, pin 2 to pin 5 belong to region R4, and pin 6 belongs to region R1.

As shown in FIG. 4E, an angle difference between the arrangement of the external component and the internal component is determined from the difference in the area of each pin between the external component and the internal component. Preferably, the angle difference is determined by majority decision, and the region R1 to which the pins 2 to 6 of the external component belong and the region to which the pins 2 to 5 of the internal component belong to R4. 90 °.

Referring to FIG. 4F, the rotation correction angle θ
c = 90 °, the pin coordinates are obtained again, and the difference of the area size / 2 from the pin coordinates of the external component and the internal component is used as the blur correction value, and the difference between the positions of the reference pins is corrected to correct the coordinates. Determine the value (Xc, Yc).

That is, the coordinate correction values (Xc, Yc) are
The following equation is obtained.

Xc = Xs0-Xd0 + (DXs-Dxd) / 2, Yc = Ys0-Yd0 + (DYs-Dyd) / 2

Here, (Xs0, Ys0) is the reference pin coordinate of the external component, DX is the length from the reference pin of the external component to the other end pin, and DY is the distance between the reference pin and the pin on the other side of the external component. (Part width), (Xd0, Yd0) are the reference pin coordinates of the internal part, DXd is the length from the reference pin of the internal part to the other end pin, and DYd is the distance from the reference pin to the other side of the internal part. This is the width between the pins (part width).

Xc = Xs0−Xd0 + (DXs−Dxd) / 2 = 1 − (− 3) + (8−6) / 2 = 1 + 3 + 1 = 5,

Yc = Ys0-Yd0 + (DYs-Dyd) / 2 = -3-(-5) + (6-10) / 2 = -3 + 5-2 = 0

Referring to FIG. 4G, a correction value (Xc, Yc, θc) is added to the external component position (X, Y, θ), and the internal component position (X ′, Y ′, θ ′) is calculated. Calculated as internal board data. In the example shown in the figure, X ′ = X + Xc = X + 5, Y ′ = Y + Yc = Y + 0, θ ′ = θ + θc = θ + 90 °.

[0037]

As described above, according to the present invention,
The board data composed of different component libraries can be converted into the board data of the target component library, thereby improving the design efficiency and the design quality.

The reason for this is that, in the present invention, board data composed of different component libraries is input by the component position input / output means, and the rotation correction angle and coordinate correction value of the component library are calculated using the component position correction means. This is to output the board data corresponding to the target component library.

[Brief description of the drawings]

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

FIG. 2 is a flowchart showing a processing flow of an embodiment of the present invention.

FIG. 3 is an explanatory diagram for specifically explaining one embodiment of the present invention (part 1);

FIG. 4 is an explanatory diagram for specifically explaining one embodiment of the present invention (part 2).

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 computer 101 component position input / output means 102 component position correction means 103 central processing unit 104 data recording device 105 input / output device

Claims (7)

[Claims] An input means for inputting board data composed of component libraries having different origin positions and / or reference directions of a component library, a rotation correction angle for a target component library with respect to the input component library, and And / or a correction unit that calculates a coordinate correction value and converts and outputs the board data corresponding to the target component library. 2. The correction means acquires a component mounting coordinate position and a rotation angle from the board data, and calculates a component library between the component library of the input board data and a component origin of the target component library. 2. The component position conversion system according to claim 1, wherein a difference between the pin positions is calculated and converted into internal board data on which the target component library is mounted. 3. A component position input means for inputting board data composed of an external component library; and calculating a rotation correction angle and a coordinate correction value between the input external component library and an internal component library. ,
Component position correction means for outputting board data corresponding to an internal component library, wherein: (a) determining reference pins for the external component library and the internal component library; In the area divided by a predetermined unit rotation angle as the origin, the area where the pin is located is obtained. (B) The external component library and the internal component library are determined from the difference between the pin positions of the external component library and the internal component library. (C) determining a coordinate correction value for correcting a reference pin from the pin coordinates of the external component library and the internal component library by performing correction with the determined correction rotation angle; d) The component mounting position in the external board data is
A component position conversion system, which performs control by converting the rotation correction angle calculated and the coordinate correction value into a target component mounting position of internal board data. 4. An angle difference between the positions of the external component library and the internal component library is determined by a majority decision from a difference between regions of the external component library and the internal component library for each pin, and this difference is used as a rotation correction angle. The component position conversion system according to claim 3, wherein: 5. A step of: (a) inputting external board data composed of an external component library; and (b) transmitting data of a component library corresponding to the component mounted on the external board data to an external component and an internal component. Inputting; (c) determining a reference pin for the external component and the internal component; and (d) determining which of the regions divided by a predetermined unit rotation angle from the reference pin as the origin is located in which region. (E) determining a rotation correction angle between the external component and the internal component from a difference between a pin position of the external component and a pin position of the internal component; and (f) using the determined correction rotation angle. Correcting and determining a coordinate correction value from pin coordinates of the external component and the internal component; and (g) a component mounting position of the external board data. And a calculated rotation correction angle, the correction by the coordinate correction values, the component position conversion method characterized by comprising the step of converting the output to the component mounting position of the internal board data of interest. 6. The method according to claim 1, wherein a difference between arrangements of the external component and the internal component is determined by majority decision from a difference between regions of the external component and the internal component for each pin, and the difference is determined as a rotation correction angle. The component position conversion method according to claim 5, wherein 7. A process for inputting external board data composed of an external component library, and b. A component library data corresponding to a component mounted on the external board data for an external component and an internal component. (C) a process of determining a reference pin for the external component and the internal component, and (d) determining in which region the pin is located in a region divided by a predetermined unit rotation angle with the reference pin as the origin. (E) a process of determining a rotation correction angle between the external component and the internal component from a difference between a pin position of the external component and a pin position of the internal component; (f) using the determined correction rotation angle Correcting and determining a coordinate correction value from the pin coordinates of the external component and the internal component; and (g) correcting the component mounting position of the external board data to the calculated rotation correction. A program for executing the above-described processes (a) to (g) by a computer by correcting the degree and the coordinate correction value and converting and outputting the target internal board data to the component mounting position. Recording medium.