JP2007156584A - Cad library calling method, registration method, image display device and cad program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a CAD library calling method for preventing the mismatching of logical information from being generated between circuit diagram symbols and CAD cells having different shape information while they are the same components, and provide a registration method, an image display device and a CAD program. <P>SOLUTION: A CAD library 11A is provided with a component library 11B specializing in a circuit design, and stored as information in an information storage part 11 arranged in a main body 1. A CAD control part 10 arranged in the main body 1 is connected to an information storage part 11 and an image display part 2. The component library 11B is provided with a plurality of circuit diagram symbols, and provided with an (a) shape group 110a, b shape group 110b..., and a shape group 110 grouped based on logical information. The (a) shape group 110a is configured of an aa circuit diagram symbol 111a, ab circuit diagram symbol 111b and so on and a plurality of circuit diagram symbols having different shape information. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a CAD (Computer Aided Design system) library model CAD library calling method, registration method, image display apparatus, and CAD program.

  As a conventional technique, there is known a CAD library that can freely call, arrange, and use symbols and CAD cells when designing or designing a circuit diagram using a CAD system (for example, see Patent Document 1).

  The information stored in the CAD library includes component library data specialized for the design of electric logic circuits and printed circuit boards, and stores a plurality of circuit diagram symbols and CAD cells. The circuit diagram symbol and CAD cell have logic information indicating the number of pins of the component, input / output information, and the like, and shape information indicating the pin position and shape of the component, and one set of the circuit diagram symbol and CAD cell. And a set of shape information. Circuit diagram symbols and CAD cells can be registered in the component library at any time by inputting logic information and shape information.

The component library described above uses the existing circuit symbol and CAD cell once the circuit symbol and CAD cell are registered, without drawing each component one by one and without having to register logic information each time. Thus, it becomes possible to design an electric logic circuit diagram and a printed circuit board, and the drawing creation time can be shortened.
Japanese Patent Laid-Open No. 7-85137

  However, according to the conventional parts library, if there are multiple shapes in the same part, they must be registered as different circuit diagram symbols and CAD cells, respectively. There is a problem that there is a possibility of registration. Also, when designing a printed circuit board, if it is necessary to change to a circuit diagram symbol and CAD cell having the same part information but different shape information due to the space of the arrangement, the circuit diagram symbol and CAD cell are incorrect. If it is registered with logical information, it may lead to wiring mistakes.

  Accordingly, an object of the present invention is to provide a CAD library calling method, a registration method, an image display device, and a CAD program that do not cause a mismatch in logic information between circuit symbols and CAD cells that have the same part but different shape information. There is to do.

(1) In order to achieve the above object, the present invention activates a CAD library on CAD, displays a plurality of shape groups formed of a set of a plurality of circuit diagram symbols having the same logic information, and displays the plurality of shape groups. By selecting logical information from the shape group display screen, the shape group having the desired logical information is displayed on the screen, and by selecting the shape information from the shape group displayed on the screen, a desired circuit diagram symbol is created. A CAD library calling method characterized by being arranged in an area is provided.

  According to such a method, since the shape information is selected after selecting the logical information, there is no discrepancy in the logical information between circuit diagram symbols having the same part but different shape information when the CAD library is called.

(2) In order to achieve the above object, the present invention activates a CAD library on CAD and newly registers a circuit diagram symbol from a plurality of shape groups formed of a set of a plurality of circuit diagram symbols having the same logic information. When a shape group having the same logical information is searched and a shape group having the same logical information already exists in the CAD library, the shape group is selected, and there is no shape group having the same logical information. In this case, a CAD library registration method is provided, wherein a new shape group is created and selected, and a circuit diagram symbol is added to the selected shape group.

  According to such a method, since a circuit diagram symbol is added after selecting a shape group having the same logic information, mistakes in registering logic information are reduced when a circuit diagram symbol is newly registered in the CAD library.

(3) In order to achieve the above object, the present invention starts a CAD library on CAD and newly registers a circuit diagram symbol from a plurality of shape groups formed of a set of a plurality of circuit diagram symbols having the same logic information. When a shape group having the same logical information is searched and a shape group having the same logical information already exists in the CAD library, the shape group is selected, and there is no shape group having the same logical information. If a new shape group is created and selected, logical information conformity verification between the newly registered circuit diagram symbol and the selected shape group is performed. A CAD library registration method is provided, in which a circuit diagram symbol is added to the shape group in the form group, and an alert is displayed on a display screen when both pieces of logical information do not match.

  According to such a method, in addition to the effect of (2), a registration error of logical information can be prevented between a newly registered circuit diagram symbol and a shape group as a registration destination.

(4) In order to achieve the above object, the present invention classifies a display unit for displaying circuit diagram symbols and a plurality of circuit diagram symbols having logic information and shape information based on the same logic information, and An information storage unit that stores information as a shape group based on information, and desired logical information is selected from the logical information stored in the information storage unit, and shape information is selected from the shape group having the desired logical information And a control unit for arranging a desired circuit diagram symbol in a circuit diagram creation area of the display unit.

  According to such a configuration, it is possible to provide an image display device that realizes the effect (1).

(5) In order to achieve the above object, the present invention starts a CAD library on CAD and displays a plurality of shape groups composed of a plurality of circuit diagram symbols having the same logic information on the screen, A step of displaying a shape group having desired logical information by selecting logical information from a display screen of a plurality of shape groups, and a desired circuit diagram symbol by selecting shape information from the shape group displayed on the screen A CAD program is provided for executing the step of arranging the data in the circuit diagram creation area using a computer.

  According to such a configuration, it is possible to provide a CAD program that realizes the effect (1).

(6) In order to achieve the above object, the present invention activates a CAD library on CAD and newly registers a circuit diagram symbol from a plurality of shape groups formed of a set of a plurality of circuit diagram symbols having the same logic information. When a shape group having the same logical information and a shape group having the same logical information already exist in the CAD library, the shape group is selected and the shape group having the same logical information is selected. If not, a CAD program for creating and selecting a new shape group and adding a circuit diagram symbol to the selected shape group using a computer is provided.

  According to such a configuration, it is possible to provide a CAD program that realizes the effect (2).

(7) In order to achieve the above object, the present invention activates a CAD library on CAD, displays a plurality of shape groups composed of a set of a plurality of CAD cells having the same logical information, and displays the plurality of shapes. A group of shapes having desired logical information is displayed on the screen by selecting logical information from the group display screen, and a desired CAD cell is selected in the circuit diagram creation area by selecting shape information from the shape group displayed on the screen. Provided is a method of calling a CAD library characterized by being arranged.

  According to such a method, since the shape information is selected after selecting the logical information, there is no discrepancy in the logical information between CAD cells having the same part but different shape information when the CAD library is called.

(8) In order to achieve the above object, the present invention activates a CAD library on CAD, and newly registers a CAD cell and logic newly registered from a plurality of shape groups constituted by a set of a plurality of CAD cells having the same logical information. When a shape group having the same information is searched and a shape group having the same logical information already exists in the CAD library, the shape group is selected, and when there is no shape group having the same logical information, A CAD library registration method is provided, wherein a new shape group is created and selected, and a CAD cell is added to the selected shape group.

  According to such a method, since a CAD cell is added after selecting a shape group having the same logical information, a registration error of logical information is reduced when a CAD cell is newly registered in the CAD library.

(9) In order to achieve the above object, the present invention activates a CAD library on CAD, and newly registers a CAD cell and logic newly registered from a plurality of shape groups composed of a plurality of CAD cells having the same logical information. When a shape group having the same information is searched and a shape group having the same logical information already exists in the CAD library, the shape group is selected, and when there is no shape group having the same logical information, Then, a new shape group is created and selected, and logical information conformity verification between the newly registered CAD cell and the shape group being selected is performed. A CAD library registration method is provided, in which a CAD cell is added to a shape group, and an alert is displayed on a display screen when both pieces of logical information do not match.

  According to such a method, in addition to the effect of (8), a registration error of logical information can be prevented between a newly registered CAD cell and a shape group as a registration destination.

(10) In order to achieve the above object, the present invention classifies a display unit for displaying a CAD cell and a plurality of CAD cells having logical information and shape information based on the same logical information. Desired by selecting desired logical information from the logical information stored in the information storage unit and the logical information stored in the information storage unit, and selecting geometric information from the geometric group having the desired logical information And a control unit that arranges the CAD cell in the circuit diagram creation area of the display unit.

  According to such a configuration, it is possible to provide an image display device that realizes the effect (7).

  According to the present invention, it is possible to prevent inconsistency of logic information between circuit diagram symbols having the same parts but different shape information or between CAD cells.

  Hereinafter, embodiments of a CAD library calling method, a registration method, an image display device, and a CAD program according to the present invention will be described in detail with reference to the drawings.

(Configuration of electronic equipment)
FIG. 1 is a schematic configuration diagram of an image display device as an electronic apparatus according to an embodiment of the present invention.

  The image display device 100 includes a main body 1 composed of electronic components such as a CPU (Central Processing Unit) and an HDD (Hard Disc Drive), an image display unit 2 having a display screen 20 for displaying characters, images, and the like. A character input unit 3 having input keys 30 such as character keys and function keys and a mouse 4 as a pointing device are provided.

(Configuration of CAD library)
FIG. 2A is a schematic configuration diagram of a CAD library according to the embodiment of the present invention. FIG. 2B is a schematic configuration diagram of the component library in FIG.

  This CAD library 11 </ b> A has a component library 11 </ b> B specialized for circuit design, and is stored as information in an information storage unit 11 arranged in the main body 1. The CAD control unit 10 disposed in the main body 1 is connected to the information storage unit 11 and the image display unit 2.

  The component library 11B has a plurality of circuit diagram symbols, and includes a shape group 110a, b shape group 110b, c shape group 110c,..., And a shape group 110 grouped by logical information. The a shape group 110a includes aa circuit diagram symbols 111a, ab circuit diagram symbols 111b, circuit diagram symbols 111c, and so on, and a plurality of circuit diagram symbols each having different shape information. The b shape group 110b and the subsequent configurations are similar.

  In the following description, it is assumed that the CAD cell used in the layout design of a printed circuit board or the like has the same configuration as the circuit diagram symbol used in the circuit design.

  FIGS. 3A to 3D are a partial cross-sectional view and circuit diagram symbols showing the mounting of circuit components according to the embodiment of the present invention, and FIG. (D) is a circuit diagram symbol corresponding to (c) indicating mounting. (E) is a circuit diagram symbol of the old JIS standard, and (f) is a circuit diagram symbol of the new JIS standard.

  The resistors 111A and 111C shown in FIGS. 3A and 3C are mounted by inserting pins into through holes of the substrate 1100, respectively. Resistor 111A and resistor 111C are components having similar properties, and have the same logic information but differ only in the mounting method. In the case of the mounting method shown in FIG. 3A, it is displayed on the display screen 20 as a circuit diagram symbol 111B as shown in FIG. In the case of the mounting method shown in FIG. 3C, the circuit diagram symbol 111B is displayed on the display screen 20 as shown in FIG.

  Further, as shown in FIGS. 3E and 3F, the circuit diagram symbol 111E and the circuit diagram symbol 111F are the same components, and the circuit diagram symbol 111G and the circuit diagram symbol 111H are the same components. However, the shapes of the same parts differ between the old JIS standard and the new JIS standard.

  These circuit diagram symbols 111B to 111H correspond to the circuit diagram symbols shown in FIG. 2B, and since the logical information matches, information is stored in the component library 11B as one of the shape groups.

(Operation of the embodiment)
The operation of the CAD library according to the embodiment of the present invention will be described below with reference to FIGS.

  The CAD control unit 10 operates by operating the character input unit 3 and the mouse 4, communicates information with the information storage unit 11, and displays a desired image on the display screen 20 of the image display unit 2.

  FIG. 4 is a flowchart showing a procedure for calling a part library of the CAD system according to the embodiment of the present invention.

  First, the CAD library 11A is activated on the CAD system (S1). By starting the CAD library 11A, the shape group 110 is displayed on the display screen 20, and logical information can be selected. Next, logical information is selected (S2). When there is a circuit diagram symbol being selected during drawing creation, logical information that matches the circuit diagram symbol can be automatically selected from the shape group 110. By inputting or selecting logic information, a plurality of circuit diagram symbols in the shape group having desired logic information are displayed (S3). By selecting shape information from a plurality of circuit diagram symbols, a desired circuit diagram symbol is arranged in the circuit diagram creation area on the display screen 20 (S4).

  FIG. 5 is a flowchart showing a procedure for registering a part library of the CAD system according to the embodiment of the present invention.

  First, the CAD library 11A is activated (S11). On the display screen 20, a shape group having the same logic information as the circuit diagram symbol to be newly registered is searched from the component library 11B (S12). Next, when a shape group having the same logical information already exists in the CAD library 11A, the shape group is selected (S13). On the other hand, if there is no shape group having the same logical information in the component library 11B, a new shape group is created and selected (S14). Next, a circuit diagram symbol is added to the selected shape group (S15). Next, the CAD control unit 10 automatically performs logical information conformity verification between the newly registered circuit diagram symbol and the selected shape group (S16). If both pieces of logical information are matched, a circuit diagram symbol is added to the selected shape group, and the CAD library 11A is updated (S19). If the two pieces of logic information do not match, an alert is displayed on the display screen 20 that prompts the user to determine whether or not to change the logic information of the circuit diagram symbol included in the selected shape group (S17). When changing the logic information of the circuit diagram symbol belonging to the selected shape group according to the logic information of the newly added circuit diagram symbol, the shape information such as the pin position information of the circuit diagram symbol belonging to the selected shape group is changed. Change and update according to the logical information (S18). Next, a new circuit diagram symbol is added to the updated shape group, and the CAD library is updated (S19). If the selected shape group is not changed, the process returns to step S12 in FIG.

(Effect of embodiment)
According to the above-described embodiment, the CAD library 11A treats a plurality of circuit diagram symbols having the same logic information as a shape group, thereby generating logic between circuit diagram symbols having the same part but different shape information. It is possible to prevent inconsistency of logical information due to an information registration error.

    In addition, since the CAD library 11A has a logical information verification function between a newly added circuit diagram symbol and a shape group that has already been registered, it is possible to prevent a registration error of logic information when a new circuit diagram symbol is added.

  In addition, the circuit diagram symbol of the logic circuit diagram is different in the JIS standard and the US military standard, but by using the CAD library 11A of the present invention, the logic information mismatch in rewriting the logic circuit diagram between the two standards. It is possible to prevent rewriting mistakes caused by.

  In addition, although the circuit diagram symbol is different from the logic circuit diagram and printed circuit board, by using the CAD library 11A of the present invention, it is possible to prevent a design error caused by the mismatch of logic information in the printed circuit board design. .

1 is a schematic configuration diagram of an image display device as an electronic apparatus according to an embodiment of the present invention. (A) is a schematic block diagram of the CAD library regarding embodiment of this invention. FIG. 2B is a schematic configuration diagram of the component library in FIG. (A)-(d) is the figure which shows the partial cross section figure which shows mounting of the circuit components regarding embodiment of this invention, and a circuit diagram symbol, (b) respond | corresponds to (a) which shows mounting The circuit diagram symbol (d) is a circuit diagram symbol corresponding to (c) indicating mounting. (E) is a circuit diagram symbol of the old JIS standard, and (f) is a circuit diagram symbol of the new JIS standard. It is a flowchart which shows the procedure of the parts library call of the CAD system regarding embodiment of this invention. It is a flowchart which shows the procedure of the parts library registration of the CAD system regarding embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Main body, 2 ... Image display part, 3 ... Character input part, 4 ... Mouse, 10 ... Control part,
11 ... Information storage unit, 11A ... CAD library, 11B ... Parts library,
20 ... display screen, 30 ... input key, 100 ... image display device,
110 ... shape group, 110a ... a shape group, 110b ... b shape group,
110c ... c shape group, 111a ... aa circuit diagram symbol,
111b ... ab circuit diagram symbol, 111c ... ac circuit diagram symbol, 111A ... circuit diagram symbol,
111B ... Circuit diagram symbol, 111C ... Circuit diagram symbol, 111D ... Circuit diagram symbol, 111E ... Circuit diagram symbol, 111F ... Circuit diagram symbol, 111G ... Circuit diagram symbol, 111H ... Circuit diagram symbol

Claims (12)

A CAD library is started on a CAD (Computer Aided Design system), and a plurality of shape groups composed of a plurality of circuit diagram symbols having the same logical information are displayed on the screen.
A shape group having desired logical information is displayed on the screen by selecting logical information from the display screen of the plurality of shape groups,
A CAD library calling method, wherein a desired circuit diagram symbol is arranged in a circuit diagram creation area by selecting shape information from the shape group displayed on the screen. A CAD library is started on CAD, and a shape group having the same logic information as a circuit symbol to be newly registered is searched from a plurality of shape groups constituted by a set of a plurality of circuit diagram symbols having the same logic information.
If a shape group with the same logical information already exists in the CAD library, select that shape group. If there is no shape group with the same logical information, create a new shape group and select it. And adding a circuit diagram symbol to the selected shape group. A CAD library is started on CAD, and a shape group having the same logic information as a circuit symbol to be newly registered is searched from a plurality of shape groups constituted by a set of a plurality of circuit diagram symbols having the same logic information.
If a shape group with the same logical information already exists in the CAD library, select that shape group. If there is no shape group with the same logical information, create a new shape group and select it. And
The logic information conformity verification between the newly registered circuit diagram symbol and the selected shape group is performed, and when both logic information is compatible, the circuit diagram symbol is added to the selected shape group and both A CAD library registration method characterized in that an alert is displayed on a display screen when the logical information of is not compatible. A display for displaying a schematic symbol;
A plurality of circuit diagram symbols having logic information and shape information are classified on the basis of the same logic information, and an information storage unit for storing as a shape group based on the same logic information;
A circuit diagram of the display unit is obtained by selecting desired logical information from the logical information stored in the information storage unit and selecting shape information from the shape group having the desired logical information. An image display apparatus comprising: a control unit arranged in a creation area.   The image display device according to claim 4, wherein the information storage unit registers the new circuit diagram symbol in a shape group having the same logical information when a new circuit diagram symbol is input.   5. The information storage unit according to claim 4, wherein when a new circuit diagram symbol is input, a new shape group having the same logical information is created and the new circuit diagram symbol is registered in the new shape group. Image display device. Activating a CAD library on the CAD and displaying on the screen a plurality of shape groups composed of a set of a plurality of circuit diagram symbols having the same logic information;
Displaying a shape group having desired logical information on the screen by selecting logical information from the display screen of the plurality of shape groups;
A CAD program for executing, using a computer, a step of arranging a desired circuit diagram symbol in a circuit diagram creation area by selecting shape information from the shape group displayed on the screen. Starting a CAD library on CAD and searching for a shape group having the same logic information as a circuit diagram symbol to be newly registered from a plurality of shape groups formed of a set of a plurality of circuit diagram symbols having the same logic information; ,
If a shape group with the same logical information already exists in the CAD library, select that shape group. If there is no shape group with the same logical information, create a new shape group and select it. A CAD program for executing the step of adding a circuit diagram symbol to the selected shape group using a computer. A CAD library is started on CAD, and a plurality of shape groups composed of a set of a plurality of CAD cells having the same logical information are displayed on the screen.
A shape group having desired logical information is displayed on the screen by selecting logical information from the display screen of the plurality of shape groups,
A CAD library calling method, wherein desired CAD cells are arranged in a circuit diagram creation area by selecting shape information from the shape group displayed on the screen. A CAD library is started on CAD, and a shape group having the same logical information as that of a newly registered CAD cell is searched from a plurality of shape groups formed by a set of a plurality of CAD cells having the same logical information.
If a shape group with the same logical information already exists in the CAD library, select that shape group. If there is no shape group with the same logical information, create a new shape group and select it. A CAD library registration method, wherein a CAD cell is added to the selected shape group. A CAD library is started on CAD, and a shape group having the same logical information as that of a newly registered CAD cell is searched from a plurality of shape groups formed by a set of a plurality of CAD cells having the same logical information.
If a shape group with the same logical information already exists in the CAD library, select that shape group. If there is no shape group with the same logical information, create a new shape group and select it. And
The logical information conformity verification between the newly registered CAD cell and the selected shape group is performed, and when the logical information of both is compatible, the CAD cell is added to the selected shape group, A CAD library registration method, wherein an alert is displayed on a display screen when information does not match. A display for displaying CAD cells;
An information storage unit that classifies a plurality of CAD cells having logical information and shape information based on the same logical information and stores them as a shape group based on the same logical information;
Select desired logic information from the logic information stored in the information storage unit, and create a circuit diagram of the display unit for a desired CAD cell by selecting shape information from the shape group having the desired logic information An image display device comprising a control unit arranged in an area.

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