JPH0318977A - Pin display system for printed board of graphic processor - Google Patents

Abstract

PURPOSE:To improve operability and to shorten a working time with a wiring task together with prevention of the miswiring by adding the marks to a pin set on a display device and a pin of the parts to undergo the wiring when the pin data on the parts serving as an end point of the wiring is inputted via an input device. CONSTITUTION:A display memory 10 which stores picture data for displaying the parts and wiring constituting a printed board, a display device 20, a program memory 40 which stores the programs and data necessary for processes of a CPU 30, the data memory 70, and an input device 50 are provided. The program memory 40 stores a mark display program 41 which shows a mark to the pin which undergoes the wiring. Then the painted-out circle marks, etc., are given to the pin of the parts serving as an end point of the wiring and the pin of the parts to undergo the wiring at input of the former pin. Thus it is not required for a designer himself to retrieve the pin of the parts to undergo the wiring out of all parts displayed on the device 20. As a result, a wiring task can be quickly and accurately carried out.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a graphic processing device that designs a printed circuit board in an interactive manner with a human, and particularly to a graphic processing device that facilitates the identification of pins of components to be wired. This invention relates to pin display methods for printed circuit boards.

[Conventional technology]

Conventionally, in interactive graphics processing devices, when wiring parts such as ICs and resistors for the purpose of designing a printed circuit board, [
Create wiring information such as "which pin of which component should be wired with which pin of other components", and use that information as
The designer visually selects the target pin while comparing the parts displayed on the display device.

There is also a method of automatically wiring the parts displayed on the display device along the optimal route based on the above wiring information, but in recent years, printed circuit boards have become smaller and more dense. Therefore, 100% automatic wiring processing is impossible. Therefore, at present, after automatic wiring, the designer must manually perform wiring processing for unwired portions and change the route for wired portions.

[Problem to be solved by the invention]

The above-mentioned conventional technology is a very difficult task in designing printed circuit boards in recent years, which are becoming smaller and more dense, resulting in long design time and erroneous wiring.

The purpose of the present invention is to improve operability, reduce work time, and reduce wiring errors when wiring between pins, which are conductive parts of parts that make up a printed circuit board, in a graphic processing device that designs printed circuit boards in an interactive manner. The aim is to prevent

[Means to solve the problem]

In order to achieve the above object, the present invention includes a display device that displays components and wiring constituting a printed circuit board, and an input device that inputs pin data of components that are end points of the wiring and data of passing points of the wiring, In a graphic processing device that designs printed circuit boards in an interactive format, when pin data for a component that is the end point of a wiring is input from the input device, a mark is displayed on the display device between the pin and the pin of the component that is the target of the wiring. It is characterized by:

[For production]

In the present invention, when a pin of a component that is an end point of a wiring is input, a mark such as a filled circle is displayed on the pin of the component to be connected to that pin. This eliminates the need for the designer himself to search for the pin of the component to be wired among all the components displayed on the display device, so that the wiring work can be performed accurately and quickly.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an interactive graphic processing device for designing a printed circuit board, which is the object of the present invention. Display memory (RA) that stores image data
M) 10, a display device 20 that displays the contents of the display memory 10 on a screen, a central processing unit 30 that executes various processes;
A program memory (RAM) 40 that stores programs and data necessary for processing in the Ei central processing unit [30], a data memory (RAM) 70, an auxiliary storage device 60, and an input device that inputs coordinate data, commands, etc. Consists of 50.

The program memory 40 stores, as a program related to the present invention, a mark display program 41 for displaying marks on pins to be wired. FIG. 2 shows a flowchart for displaying a target pin mark using the mark display program 41 and performing predetermined wiring.

Currently, the display memory 10 stores image data of parts constituting a printed circuit board as shown in FIG.
It is assumed that the display device 20 is displaying the contents of the display memory 10. In this case, the data memory 70 stores each component IC-0f whose origin is at the lower left of the display memory 10, as shown in FIG.

The coordinate data of the pin center of IC-02, R-01 is stored 0. For example, the pin 1 of component IC-0f is
It shows that the coordinate is 30 and the Y coordinate is 140,
The same applies below. Furthermore, the auxiliary memory bag @60 has a fifth
As shown in the figure, wiring information created based on one circuit diagram is stored.

For example, the signal name vCC means a power source of potential Vcc, and I
This indicates that the 1st pin of C-01 and the 1st pin of IC-02 are the pins to be connected.

As a specific example, part 1 of part R-01 in Fig. 3 is shown below.
The procedure for wiring the number pin and the pins having the same potential will be explained based on the flowchart of FIG. 2.

The operator instructs the start of wiring work from the input bag [50] and selects part 1 of component R-01 to be wired.
Input the coordinate data (90°35) of the center of the number pin (
Step 101), the mark display program 41 in the program memory 40 is activated in response to an instruction to start wiring work, and the central processing unit 30 first inputs the coordinate data of the pins of each component stored in the data memory 70. The pin number of the part that matches the coordinate data (R-01゜1)
(step 102), and furthermore, the auxiliary storage device 6
Among the wiring information stored in 0, the signal name (SIGI
) (Step 103) Next, the central processing unit 30 searches for all pin numbers belonging to the searched signal name (SIGI).

That is, (IC-01,8), (IC-02,5).

Regarding (R-01, 1), search the data memory 70 for the coordinate data of the center of those pins (step 1
04), As a result, the coordinate data (30,90), (19
0,140), (90,35) are obtained. Then, the central processing unit 30 displays circular landmark data 900 centered at the retrieved coordinates on the display memory 10, as shown by the black circle in FIG. Stored in the display device along with the previously displayed parts data! 20 (step 105), at which point the process based on the landmark display program 41 ends,
The central processing unit 30 receives input from the operator.

The operator selects, for example, a pin number (IC-Of,
8) and input the coordinate data (30, 90) of the center of the pin from the input device 50 (step 106);
Next, the operator uses the coordinate data of the wiring passing point as
For example, Pl(20,80), P, (20,20), P.

(80, 20) are input in sequence (step 107).

Thereby, the central processing unit 30 executes wiring processing,
As shown in Figure 6, pin 1 of component R-01 and component I
The wiring data 901 between pin 8 of C-Of is stored in the display memory 10 and displayed on the display bag [20]. After that, in the same way, the operator selects the pin number (Ic) as the end point of the wiring.
-o2.5) and enter the coordinate data of the wiring passing point to connect the pin 1 of 1 component R-01 and the component IC.
The wiring process between pin 5 of -02 is executed.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, in a graphic processing apparatus for the purpose of designing a printed circuit board, when wiring is performed between pins that are conductive parts of parts constituting the printed circuit board, the end points of the wiring and In addition to reducing the time required to search for pins to be wired, it also eliminates the possibility of accidentally selecting pins to be wired during the search, which significantly reduces wiring work time and prevents incorrect wiring. .

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of an embodiment of a graphic processing device targeted by the present invention, FIG. 2 is a processing flow diagram of a landmark display program,
FIG. 3 is a diagram showing an example of the contents of the display memory, FIG. 4 is a diagram showing an example of the contents of the data memory, FIG. 5 is a diagram showing an example of the contents of the auxiliary storage device, and FIG. 6 is a diagram showing landmark data, FIG. 7 is a diagram showing the contents of a display memory to which wiring data has been added. 10... Display memory (RAM), 20... Display device, 30... Central processing unit, 40
...Program memory (RAM), 41... Marker display program, 50... Input device, 60... Auxiliary storage device, 70
...Data memory (RAM) 900...Mark data, 901...Wiring data. Figure 1 Figure 2 i3 Figure 0! O0 0 00

Claims (1)

[Claims] (1) Equipped with a display device that displays the parts and wiring that make up the printed circuit board, and an input device that inputs the pin data of the components that are the end points of the wiring and the passing point data of the wiring, allowing you to design the printed circuit board in an interactive manner. A printed circuit board characterized in that, when pin data of a component that is an end point of a wiring is input from an input device in a graphic processing device that performs the wiring, a mark is displayed on the display device at the pin of the component and the pin of the component that is the target of the wiring. pin display method.