JPH0540798A - Data management system for cad design library - Google Patents

Abstract

PURPOSE:To present an efficient data management system for CAD design library used for CAD design of an electronic circuit or the like. CONSTITUTION:A library table is divided into an index table 1, a logical data table 2, a mounting data table 3, and a function data table 4 and is managed, and the editing processing is performed in a logical design processing 10 and a mounting design processing 11 on demand to generate a new library. Thus, data tables are divisionally managed to individually generate logical data, mounting data, etc., of every parts, and data common to parts is shared, thereby managing the library very efficiently.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to efficient management of various library data used in CAD design of electronic circuits and the like.

[0002]

2. Description of the Related Art A library used in this type of CAD design has a database structure using a part name as a search key, and each library data is constructed in a format such as logical data and mounting data.

A CAD design procedure in such a conventional technique will be described with reference to FIG. In the CAD design, the logic design process and the mounting design process of the circuit are the main, and the CAD design library data is provided with a library table 8 created in advance. Logical data such as pin names and logical attributes, and mounting data such as component shapes, physical pin names, and power / earth data were stored.

At the stage of the logical design processing 10, the logical data is obtained, and at the stage of the mounting design processing 11, the mounting data is obtained.
Each treatment and data were provided in a one-to-one relationship. As described above, in the library table in the conventional technique, a method of creating all required library data in advance is adopted. In this data creation, a part name is first set by conversation processing, and then logical data is set. And the mounting data were input each time.

Further, as described above, at the time of CAD design,
By referring to the part name of the library data as a label, the contents of the logical data and the mounting data dependent on this are extracted and incorporated into the CAD design data.

[0006]

In the above prior art, since the library data once created is incorporated in the CAD design data in the created format, even if the parts have the same logic and the same shape. When using parts having different functions such as voltage value and current value, the library data had to be recreated each time.

Therefore, the number of steps for recreating the library data and the number of management steps increases, and the amount of data to be stored increases.
This has been an obstacle to efficient CAD design. The present invention has been made in view of the above problems, and an object thereof is CA
It is to provide an efficient data management system in the D design library.

[0008]

According to the present invention, as shown in FIG. 1, which is a principle diagram, a library table 8 is provided with an index table 1, a logical data table 2, a mounting data table 3, and a function data table 4. The logical design process 10 and the packaging design process 11 are edited as needed to create a new library.

[0009]

According to the present invention, by separately managing each data table as described above, logical data and mounting data etc. are separately created for each component, and common data is shared between the components. By doing so, the management of the library can be made extremely efficient.

[0010]

[Embodiment] In the CAD design system of this embodiment, the CAD
An interface processing unit 12 which is the core of the design process,
Interface data 1 registered on a magnetic disk, etc.
3 and the first CAD design library data 6.

The first CAD design library data 6 has a basic library table 8 in which logical data and mounting data are registered for each part. This first CAD
The design library data 6 is generated in advance by a library creating instruction 15 from the outside.

Here, the logic data includes logic symbols (AND, OR gates, etc.), logic pin names (IN, OUT, I / O, etc.), logic attributes, etc. as shown in FIG.
Further, the mounting data means the component shape (DI
P, LCC, etc.), physical pin name (No. 1 pin, etc.), power supply / earth data, etc.

A component correspondence table 16 is set in the interface data 13, and the component name serving as a label of the second CAD design library data 7 is registered in the component correspondence table 16.

In the interface processing unit 12, the second C
As shown in FIG. 2, it has an AD design library data 7, and inside thereof, an index table 1 for registering a part name as a label, and a logical data (belonging to the subordinate of this index table 1 for each label ( Information), a logical data table 2 for registering information), and implementation data (information)
Has a mounting data table 3 for registering the function data and a function data table 4 for registering function data (information).

Further, in this embodiment, a common table 5 is added in parallel with each of the above-mentioned data tables, in which a key for referring to each data table is registered. This common table is referred to by the key for each part name of the index table 1.

That is, in the CAD design process, the same logical symbol (for example, AN
In many cases, a large number of different parts having D) or the same mounting shape are used, but each time a new part is added or a part is changed by changing function data, the conventional technique (FIG. The library table 8 in which the logical data and the mounting data are individually registered for all the parts described in (4).
Is complicated to create.

With respect to this point, in this embodiment, the table is divided into the logical data table 2, the mounting data table 3 and the function data table 4 as described above, and these are integrated and managed by the upper index table 1. Keep it.
Then, by adding a common table 5 in addition to each of the above-mentioned tables, it is sufficient to register only the logical data table 2 and the mounting data table 3 which differ from each other among the parts.

For example, in the logical data table 2, the C
Only the number of logics used in AD design needs to be registered, and only the types of mounting package structures need to be registered in the mounting data table 3.

With respect to the keys that refer to these, it is possible to store a large number of different parts in a small area by simply registering them in the common table 5 for each part name. For example, when a new component, for example, "component name AC" is newly registered by an instruction from the outside, this logic and mounting form are the same as "component name AB", and when only the function data is different, it is input from the outside. , Only the function data should be registered in the function data table 4,
The logical data and the mounting data need only be stored in the common table 5 using the same address as the address on the logical and mounting table corresponding to the “component name AB” as a key. As a result, the newly registered "component name AC" can save the information area of the logical data and the mounting data.

Next, referring to FIG. 5, the CA in this embodiment will be described.
The flow of D processing will be described. In the CAD design processing, the logic design processing 10 is executed, and the interface processing unit 1
When there is a request for the required library to the second CAD, the interface processing unit 12 reads the required component name from the interface data 13, registers this in the index table 1 of the second CAD design library data 7, and the index table 1 lower common table 5, logical data table 2, and implementation data table 3
Information from the first CAD design library data 6 is registered in and. Further, the function data table 4 is registered with information on the functions determined in the logic design process 10.

At this time, each data table is registered in correspondence with the label of the index table 1, but as described above, the logic, mounting,
When it is the same as the function data, the key is registered in the common table 5 and the registration in the individual data table is omitted.

By the second CAD design library data 7 constructed in this way, logical data is provided at the stage of the logical design process 10 of CAD design, and mounting data is provided at the stage of the packaging design process 11.

[0023]

According to the present invention, efficient library management can be realized by dividing and registering logical data, mounting data, etc. as individual library tables as individual library tables.

[Brief description of drawings]

FIG. 1 is a principle diagram of the present invention.

FIG. 2 is a block diagram showing a table structure of a library in the embodiment.

FIG. 3 is an explanatory diagram showing a specific example of logical data in the embodiment.

FIG. 4 is an explanatory diagram showing a specific example of mounting data in the embodiment.

FIG. 5 is an explanatory diagram showing a flow of a CAD design process in the embodiment.

FIG. 6 is an explanatory diagram showing the structure of a library table and the relationship between library data and CAD design processing in the prior art.

[Explanation of symbols]

1 ... Index table 2 ... Logical data table 3 ... Implementation data table 4 ... Function data table 5 ... Common table 6 ... 1st library table (1st CAD design library table) 7 ... 2nd library Table (second CAD design library table) 8 ... Library table 10 ... Logical design processing 11 ... Implementation design processing 12 ... Interface processing unit 13 ... Interface data 15 ... Library creation instruction 16 ... Component correspondence table

Claims (1)

[Claims] 1. In a CAD design system for arranging components registered in a library according to a logical design process and a packaging design process, a library table for registering components is an index table (1) for registering component names as labels, A logical data table (2) arranged below the index table (1) and referred to by the index table to register logical information for each label, an implementation data table (3) to register implementation information, and functional information A data management system in a CAD design library, comprising: a functional data table (4) for registering