JPH0245880A - Logic circuit diagram reflecting system for parts allocation result - Google Patents

Abstract

PURPOSE:To reduce manhours and to eliminate errors by outputting a history file at the time of executing a gate/pin change and changing a logic circuit diagram according to the data. CONSTITUTION:Two pins to be mutually changed or parts pins to belong to changed gates are indicated. Then, a package data storing part 1-4 is retrieved by an identification number added for each part at the time of displaying. From the result of the retrieval, a physical parts data storing part 1-3 is retrieved by a physical parts name stored in the physical parts name field of the found part, and physical information is obtained. A name described in a logical parts name field corresponding to the physical parts name field of the package data storing part 1-4 is obtained. By the name and a pin number obtained beforehand, a logical parts data storing part 1-2 is retrieved. When the gate/pin change is executed, the history file is outputted. Next, a logical information switching part 1-6 retrieves a logic circuit diagram information storing part 1-1 by a gate identification number, a location, a pin number and a change ID in the history file, and a value is changed. By executing an output by means of an output processing part 1-7 finally, a plotter diagram, in which the result of the gate/pin change is reflected, is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printed circuit board design system using a computer, and particularly to a method for reflecting the results of gate/pin exchange on a logic circuit diagram.

[Conventional technology]

In order to facilitate wiring design in printed circuit board design, pins can be replaced within the same component after mounting 9 components.

Gates are exchanged within the same part or between two parts.

These results are conventional, gate replacement, and pin replacement.

In many cases, the results were not reflected in the logic circuit diagram, so the exchange results had to be entered twice by hand, or the circuit diagram of the replaced part had to be re-entered.

[Problem to be solved by the invention]

The above-described conventional method of reflecting the gate/pin exchange results on the circuit diagram requires one manual operation, which takes a considerable amount of time and has a high possibility of error.

[Means to solve the problem]

In the component allocation of the present invention, the resulting logical circuit diagram reflection method includes a logical circuit diagram information storage section that stores interconnection information between gates, logical pin numbers corresponding to individual gates, and physical pin numbers, and nine components. −To attribute.

A logical component data storage section that stores pin information and gate exchange information, a physical component data storage section that stores physical information such as the size of the 9 components, and the spacing between the pins of the 2 components, and the assignment of the 2 components as a result of the part numbers of the 2 components. , a mounting data storage section that stores the placement position and direction of the components on the printed circuit board, and a gate/gate that changes the mounting data of the two components and outputs the data for changing the mounting data and the execution history data of the gate/pin exchange. a pin exchange processing section; and a logic information conversion section that reflects the results of gate/pin exchange to logic circuit diagram information.

and an output processing section that outputs a logic circuit diagram.

[Embodiments] Next, two embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the present invention includes a logic circuit diagram information storage section 1-19 that stores gate connection information; a logic component data storage section 1-21 that stores gate attributes and pin information included in the component;
Physical component data storage section 1-3 that stores physical information such as component size and number of pins. Location of parts on the cylinder board.

Mounting data storage unit 1-4 storing directions. Gate/pin exchange processing unit 1-5 that performs gate/pin exchange and outputs its history file. Logic information exchange unit 1-6 that reflects the results of gate/pin exchange on the logic circuit diagram. The output processing section 1-7 outputs the contents of the logic circuit diagram.

The logic circuit diagram information storage unit 1-1 is a storage unit that organizes and stores gate connection information of two circuit diagrams for each gate.

FIG. 2 is an example of a circuit diagram, which is stored in the logic circuit diagram information storage section 1-1 in the format shown in FIG. 3.

The logical component data storage section 1-2 is.

This is a storage unit that stores gate attributes, pin attributes, and pin interchangeability information included in the component.

FIG. 4 shows nine typical examples of parts, which are stored in the format shown in FIG.

The physical part data storage section 1-3 has the shape of two parts.

This is a storage unit that stores physical information about pin spacing of parts.

FIG. 6 shows the case where a 16-pin IC is stored. The mounting data storage unit 1-4 is a storage unit that stores information on the arrangement positions and directions of components on the cylinder board and connection information between pins of one component. The actual storage method is shown in FIG.

The gate/pin exchange processing unit 1-5 is equipped with a graphic display, a key gate, and a tablet.

Perform gate exchange or pin exchange through interactive processing.

The results are output to a mounting data change file, and a gate/pin exchange execution history file is also output.

The logical information exchange unit 1-6, which shows the format of the implementation data change file in FIG. 8 and the format of the execution history file in FIG.
The information stored in the mounting data storage section output by the gate/pin exchange section 1-5 is changed, and the mounted data storage section 1-5 after the change, the history file, and the logic circuit diagram information storage section 1- before the change are stored. Compare the information stored in 1-1, change only the changed logic circuit information, return it to the logic circuit information storage 1-1, and create a list of changed parts (
Difference list) is output.

Next, the operation will be explained.

The tablet in the gate/pin exchange processing unit issues a command for gate exchange and key exchange. Next, on the tablet, indicate the pins to be exchanged or the two component pins belonging to the gate to be exchanged. Then, first, the mounting data storage section 1-4 is searched using the identification number assigned to each component at the time of display. As a result of the search, the physical part data storage unit 1-3 is searched using the physical part name stored in the physical part name tag of the found part (see Fig. 7) to obtain physical information (
(See Figure 6). The difference between the component placement position obtained from the mounting data storage section 1-4 (see FIG. 7) and the coordinates specified from the tablet is calculated, and the difference, the direction of the component, and the coordinates obtained from the physical component data storage section 1-3 are calculated. Obtain the pin number specified on the tablet from the pin coordinates. Do this for two pins. Also.

The name written in the logical component name column corresponding to the physical component name column of the mounting data storage section 1-4 is obtained. The logical component data storage section 1-2 is searched using this name and the previously obtained pin number. As a result of the search, if the two are interchangeable, pin exchange is performed, and gate exchange is performed when gate exchange is performed. Furthermore, if a gate/pin exchange is performed, a history file thereof is output.

FIG. 10 shows an example of history file generation. Next, the logic information exchange unit 1-6 searches the logic circuit diagram information storage unit 1-1 using the gate identification number, location, pin number, and change ID in the history file, and changes the value. Finally, by outputting in the output processing section 1-7, a Zorotsuta diagram reflecting the result of the shift/pin exchange can be obtained.

〔Effect of the invention〕

As explained above, the present invention outputs a history file when performing gate/pin exchange and changes the logic circuit diagram according to the data, which eliminates the need for manual work, eliminates man-hours, and eliminates errors. effective.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the present invention, FIG. 2 is an example of a logic circuit diagram, FIG. 3 is an example of a storage format in the logic circuit diagram information storage section of the logic circuit of FIG. 2, and FIG. Figure 4 shows the IC
Figure 5 shows an example of this. FIG. 4 shows an example of the storage format in the logical component data storage section, FIG. 6 shows an example of the storage format in the physical component data storage section, and FIG. 7 shows an example of the storage format in the physical component data storage section. A diagram showing an example of a storage format in the implementation data storage unit,
FIG. 8 shows an example of the output format of the mounting data change file, FIG. 9 shows an example of the output format of the history file, and FIG. 10 is a diagram showing the method of outputting the history file. In the figure, 1-1 is a logical circuit diagram information storage section, 1-2 is a logical component data storage section, and 1-3 is a physical component data storage section. Jsu(J22 SA(Jl(J(Jl, 5 d

Claims (1)

[Claims] 1. In a printed circuit board design system using a computer, there is a logic circuit diagram information storage unit that stores interconnection information between gates, logical pin numbers and physical pin numbers corresponding to individual gates, and gate attributes and pins included in parts. information,
A logical component data storage section that stores gate replacement information, a physical component data storage section that stores physical information such as component size and component pin spacing, and component allocation results, component part numbers, and printed circuit boards. A mounting data storage section that stores the placement position and direction of the component on the top, and data and gate/pin information for changing the gate/pin information of the component and changing the mounting data.
It consists of a gate/pin exchange processing section that outputs pin exchange execution history data, a logic information conversion section that reflects the gate/pin exchange results in logic circuit diagram information, and an output processing section that outputs the logic circuit diagram. Logic circuit diagram reflection method for component allocation results.