JPH08287124A - Library registration device - Google Patents

Abstract

PURPOSE: To provide a library registration device which can improve the reliability of a library registered as a data base. CONSTITUTION: A layout verification part 2 verifies the layout of the library as checking operation for the library 1 before a division part 3 divides the library 1. A comparison inspection part 4, when registering the library 1 divided by the division part 3 as the data base 5, compares-and inspects the registered library 1 and a library that is already registered as the data base 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a library registration device for registering a library as a database.

[0002]

2. Description of the Related Art In recent years, a library divided into small units such as componentized cells and blocks has come to be used in the layout design of semiconductor devices and the like. This library is usually registered as a database, and registration of the library as a database is
It is performed by the library registration device.

A conventional library registration device will be described below with reference to the drawings. FIG. 2 is a block diagram of a conventional library registration device. In FIG. 2, 6 is a library having a hierarchical structure registered as input data, 7 is a division unit that divides the library 6 into storage units as a database when the library 6 is stored in the database,
Reference numeral 8 is a database for storing and registering the library 6.

The operation of the library registration device configured as described above will be described below. First, the library 6 prepared as input data is input to the dividing unit 7. Next, the input library 6 is divided into units that the dividing unit 7 stores in the database 8, and the divided library 6 is stored and registered in the database 8.

[0005]

However, in the conventional library registration device as described above, the library input as the input data is registered as a database without any checking operation such as layout verification performed on them. The library registered in this way has a problem that it is not possible to obtain sufficient reliability as a library when using these.

In addition, at the stage of registering the library in the database, cells or blocks already having a hierarchical structure are usually divided and stored in cells of the minimum unit inheriting the hierarchical structure, so that in the lower hierarchy. If there are shared cells or if the block is composed of a library consisting of multiple cells, the registration operation cannot be controlled well in the registration of the library to the database. The library registered as above also has a problem that it is not possible to obtain sufficient reliability as a library when using these.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a library registration apparatus capable of improving the reliability of a library registered as a database.

[0008]

In order to achieve the above object, a library registration device according to a third aspect of the present invention divides a library input as input data into storage units as a database by a dividing means. In the library registration device for registering as a database, verification means for performing layout verification of the library before the division by the division means, and library and database for registration at the time of the registration of the library divided by the division means And a comparison inspection means for comparing and inspecting the already registered library.

[0009]

According to the third aspect of the present invention, the verification means performs the layout verification of the library as the checking operation of the library before the dividing means divides the library.

When the comparison inspection means registers the library divided by the division means as a database, the comparison inspection means compares and inspects the library to be registered and the library already registered as the database.

In this way, the layout verification of the library and the comparison inspection of the library are performed by a series of processes.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A library registration device according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of the library registration apparatus in this embodiment. In FIG. 1, 1 is a library having a hierarchical structure registered as input data, 2 is a layout verification unit as a verification unit for verifying the layout of the library 1 as a check operation for the library 1, and 3 is the library 1 When the data is stored in the database, the dividing unit 4 as a dividing unit that divides the library 1 into storage units as the database has already been registered as a database and cells in the lower hierarchy of the library 1 divided by the dividing unit 3. A comparison inspection unit 5 as a comparison inspection means for comparing and inspecting existing cells is a database for storing and registering the library 1.

The operation of the library registration device configured as described above will be described below. First, similarly to the conventional library registration device, the library 1 is prepared as input data. The prepared library 1 is input to the layout verification unit 2.

Next, the layout verification section 2 verifies whether or not the layout of the input library 1 violates the design rule. As a result of the verification, if the input layout of the library 1 does not violate the design rule, the process is continued, and if it violates, it is judged as an error and the process is stopped in the process.

Further, the library 1 that has passed through the layout verification unit 2 is divided into cells that inherit the hierarchical structure which is a unit stored in the database 5 by the division unit 3, and is divided by the division unit 3 in the comparison inspection unit 4. The cell and the existing cell in the database 5 are compared and inspected. Here, as a result of the comparison inspection, if cells with the same name exist and the contents are the same, it is judged as an error and the registration process is stopped, and if the contents with the same name are different, the registration process is executed. .

By the above operation, the layout verification unit 2
Can check the layout of the library as a checking operation of the library before the dividing unit 3 divides the library into cells as units to be stored in the database 5, and the comparison inspection unit 4 divides the library by the dividing unit 3. When registering the library as the database 5, the library to be registered and the library already registered as the database 5 can be compared and inspected. In this way, the layout verification of the library and the comparison inspection of the library can be performed in series. It can be done by processing.

Therefore, the reliability of the library registered as the database can be improved. Further, since the comparison inspection unit 4 can compare and inspect the library to be registered and the library already registered as the database 5 when registering the library divided by the division unit 3 as the database 5, the comparison inspection unit 4 already has the database. The existing library registered as 5 can be protected.

In the above-described embodiment, the layout verification section 2 and the comparison inspection section 4 are provided so that these operations are performed before the library is registered as a database. The reliability of the library registered as the database can be improved as compared with the conventional case even by providing only the above.

[0020]

As described above, according to the present invention, the verification means performs the layout verification of the library before the dividing means divides the library as the checking operation of the library, or the comparison checking means uses the dividing means. When registering a divided library as a database, it is possible to compare and inspect the library to be registered and the library already registered as a database, or at least one of them, so it is possible to register the library as a database. In the meantime, at least one of the layout verification of the library and the comparison inspection of the library can be performed.

Therefore, the reliability of the library registered as the database can be improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a library registration device according to an embodiment of the present invention.

FIG. 2 is a block diagram of a conventional library registration device.

[Explanation of symbols]

 2 Layout verification section 4 Comparison inspection section

Claims (3)

[Claims] 1. A library registration device for dividing a library input as input data into storage units as a database by a dividing means and registering as a database, a layout verification of the library is performed before the dividing by the dividing means. A library registration device provided with a verification means for performing. 2. A library registration device for dividing a library input as input data into storage units as a database by a dividing means and registering the database as a database, when the library divided by the dividing means is registered. , A library registration device provided with comparison inspection means for comparing and inspecting a library to be registered and a library already registered as a database. 3. A library registration device for dividing a library input as input data into storage units as a database by a dividing means and registering it as a database, wherein layout verification of the library is performed before the dividing by the dividing means. A library registration device provided with verification means to perform and comparison inspection means to compare and inspect a library to be registered and a library already registered as a database when the library divided by the dividing means is registered.