JP2830767B2 - Wiring pattern highlighting system and method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system and a method for highlighting a wiring pattern on a CAD layout diagram of an LSI.

[0002]

2. Description of the Related Art Conventionally, in this type of wiring highlighting system, when a wiring of interest is selected from an LSI layout diagram displayed on a screen, the selected wiring is a wiring of which wiring layer or a circuit of which circuit. It is used to emphasize the display so that the user can recognize how the terminal is connected to the input (output) terminal.

FIG. 8 is a block diagram showing a conventional technique. FIG. 9 is a flowchart showing the operation. Referring to FIG. 8, an input device 1 such as a mouse, a data processing device 2,
And a display device 3 such as a CRT. The data processing device 2 includes a wiring extracting unit 20.

[0004] The operation of the prior art will be described with reference to FIGS. 8 and 9.

A wiring of interest is selected from the layout diagram displayed on the display device 3 by the input device 1 (step A1 in FIG. 9).

Next, the selected wiring information is given to the wiring extracting means 20, and the wiring extracting means 20 selects all the wirings at the same node as the selected wiring (that is, through holes or contacts, hereinafter simply referred to as "through holes"). ) Are extracted from the wiring of another wiring layer connected to the selected wiring or the wiring connected to the input / output terminal of each circuit via the connected wiring (step A2 in FIG. 9).

The extracted wiring is highlighted and displayed (step A3 in FIG. 9).

[0008] The wiring connected to the input / output terminals of each circuit is usually accompanied by a text indicating the name of the input terminal or the name of the output terminal, but the prior art does not particularly recognize this text.

[0009]

In this conventional highlighting system, all the wires connected as the same node as the selected wire are connected without recognizing whether they are connected to the input terminal or the output terminal of the circuit. In order to extract and highlight the wiring, when narrowing down the circuit from the selected wiring, when connected to the input (output) terminals of a plurality of circuits, which wiring path is connected to which terminal However, there is a problem that it is not possible to uniquely determine whether or not the wiring is performed, and all wiring routes must be confirmed.

Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, and to narrow down a circuit from a selected wiring, when connecting to input / output terminals of a plurality of circuits, uniquely define a narrowing direction. It is an object of the present invention to provide a wiring highlighting system and method that can be determined as desired.

[0011]

To achieve the above object, according to an aspect of the wiring pattern highlighting system of the present invention, the screen displayed LSI any wiring pattern other as the same nodes and selected from the layout view of In a wiring highlighting system that highlights all wiring patterns,
A first wiring extracting means for extracting and highlighting a wiring selected via the input means (referred to as “selected wiring”) and all other wirings which are the same nodes as the selected wiring ; a text extracting unit that extracts and displays text data attached to extracted the wiring by the wiring extracting means, from the object selection wirings, extraction in the first wiring extracting means
The displayed wiring is displayed by the text extracting means.
Is provided with a second wiring extracting means for extracting highlight the wires only to configure the connection path between the input means being attached text data selected via the wiring from the text data It is characterized by having. The arrangement of the present invention
The line pattern highlighting method is as follows: (a) Displayed on the screen
In the layout diagram, the wiring of the desired wiring layer (“selected wiring”
Line)) via input means;
(B) the selected wiring and a contact with the selected wiring
Of the wiring layer connected through the through hole or through hole
Extracting and highlighting all other wiring; and (c)
Text attached to the wiring extracted in the step (b)
Extracting the data and displaying it on the screen;
Input from the text data displayed on the screen
Selecting desired text data via means
(E) the selected wiring and the extracted in the step (b).
Text data selected in step (d) of
Extract only the wiring connections between the
A process for highlighting the selected wiring and the extracted wiring
And is characterized by including.

[0012]

According to the present invention, after extracting all the wirings having the same node as the selected wiring, the text attached to the extracted wiring is extracted, and any text is added from the selected wiring. By selectively highlighting only the route to the wiring, when narrowing down the circuit, the selected wiring is branched and connected to the input / output terminals of a plurality of circuits via other wirings. In such a case, only the wiring path to an arbitrary terminal (for example, a wiring path connected to an input terminal or a wiring path connected to an output terminal) is highlighted, so that it is necessary to check each of the other wiring paths. And the direction of narrowing down can be uniquely determined.

That is, text such as a pad name, a basic circuit block name, or an input / output terminal name is usually displayed together with the wiring data on the layout display screen. In the present invention, the selected wiring is selected. When extracting all the wires connected to the terminal, determine whether the text attached to the wire represents the input terminal or the output terminal, and only the wires connected to the input terminal are output to the output terminal. It is possible to selectively highlight such as displaying only the connected wiring or all of the connected wiring. For this reason, according to the present invention, in the layout diagram, only the wiring path connected to the input terminal is used for narrowing down (foreward tracing) the circuit at the subsequent stage from the wiring currently focused on,
Further, when narrowing down (back trace) the preceding circuit from the current wiring of interest, only the wiring path connected to the output terminal can be recognized, so that the narrowing down direction can be uniquely determined.

[0014]

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

FIG. 1 is a block diagram showing one embodiment of the present invention. FIG. 2 is a flowchart showing the operation of the present invention.

Referring to FIG. 1, the present embodiment comprises an input device 1 such as a mouse, a data processing device 2, and a display device 3 such as a CRT. It has a wiring extracting means 21, a text extracting means 22, and a second wiring extracting means 23.

FIG. 3 shows an example of a layout diagram displayed on the display device 3 in advance. Referring to FIG.
The input terminal IO1 of FB1 is connected to the wiring L1, and the wiring L1 has the text "I01". Wiring L1 is a through hole t
It is connected to the wiring L21 via 1. The wiring L21 is connected to the wiring L22 and the wiring L3 via the through hole t2, and the wiring L3
Is connected to the input terminal I02 of the circuit block FB4, and the wiring L3
Has the text "I02".

The wiring L22 is connected to the wiring L23 through the through hole t3.
And the wiring L4, the wiring L4 is connected to the output terminal O01 of the circuit block FB5, and the wiring L4 has the text “O01”. The wiring L23 is connected to the wiring L5 via the through hole t4.
The wiring L5 is connected to the input terminal I01 of the circuit block FB3, and the wiring L5 has the text “I01”.

Therefore, in FIG. 3, the wirings L1, L22, L2
3, L3, L4, L5 and through holes t1, t2, t3, t4 are the same node.

Note that the circuit blocks FB4 and FB5 are not in the display screen D of the display device 3 (see FIG. 3).
It cannot be confirmed on the screen as it is that L3 and L4 have the texts "I02" and "O01" respectively.

FIG. 4 shows a layout diagram displayed on the screen by the first wiring extracting means 21 in this embodiment. FIG.
9 shows a layout diagram displayed on the screen by the text extracting means 22 in the present embodiment. 6 and 7 show layout diagrams displayed on the screen by the second wiring extracting unit 23 in the present embodiment.

Next, the operation of this embodiment will be described with reference to FIGS.

As shown in the display screen D of FIG. 3, a wiring L1 of interest is selected from the input device 1 from the layout diagram displayed on the display device 3 (step A1 in FIG. 2).

Next, the information that the wiring L1 has been selected is given as the first information.
And extracts all other wirings L21, L22, L23, L3, L4, and L5 which are the same nodes as the wiring L1 (step A2 in FIG. 2).

Then, the wiring extracted in step A2 is highlighted on the display device 3 as shown in a display screen D in FIG. 4 (step A3 in FIG. 2).

The wiring information extracted by the first wiring extracting means 21 is supplied to a text extracting means 22 to extract text data representing input / output terminals of each circuit attached to the extracted wiring (FIG. 2). (Step A4), and display on the display device 3 as shown in the display screen D in FIG. 5 (Step A in FIG. 2).
5). As shown in FIG. 5, on the display screen D, the extracted input terminal and output terminal text data “I01”,
“IO2” and “O01” are displayed in the text selection screen T.

Next, an arbitrary terminal is selected by the input device 1 from the text selection screen T displayed on the display device 3 (steps A61 and A62 in FIG. 2).

For example, when it is desired to confirm the wiring route connected to the input terminal (ie, when narrowing down the circuit from the front), the text “I0” is selected from the text selection screen T.
(Step A61 in FIG. 2) Then, information that texts "I01" and "I02" have been selected is given to the second wiring extraction means 23, and the text "I0" is selected.
Only the wirings L3 and L5 with "1" and "I02" and the wiring L1 initially selected and the wirings L21, L22 and L23 connected to these wirings through through holes or contacts are extracted (FIG. 2). Step A71) and highlight the display device 3 as in the display screen D of Fig. 6 (step A81 of Fig. 2), that is, the wiring L4 connected to the output terminal O01.
Is not highlighted and there is no need to check the circuit block FB5.

Similarly, when it is desired to check the wiring path connected to the output terminal (ie, when narrowing down the circuit from the rear), the text “O01” is selected from the text selection screen T.
Is selected (step A62 in FIG. 2). Then, the information that the text “O01” has been selected is displayed in the second wiring extraction unit 2.
3, the wiring L4 with the text "O01" and the first selected wiring L1 and the wiring L22 connected to those wirings through through holes or contacts.
Only (step A72 in FIG. 2) is extracted and displayed as shown on the display screen D in FIG. 7 (step A82 in FIG. 2). That is, the wirings L5 and L3 connected to the input terminals I01 and I02 are not highlighted, and there is no need to check the circuit blocks FB3 and FB4.

Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the above embodiment, but includes various embodiments according to the principle of the present invention.

[0031]

As described in the foregoing, according to the engagement Ru wiring highlight system and method of the present invention, after extracting all wires having the same node as the selected wiring, with the extracted lines Is extracted, and only the path from the selected wiring to the wiring with any text is selectively highlighted, so when narrowing down the circuit, the selected wiring is replaced with other wiring , Only the wiring path to an arbitrary terminal (for example, the wiring path connected to the input terminal or the wiring path connected to the output terminal) is emphasized when connected to the input / output terminals of a plurality of circuits via This eliminates the need to check the other wiring paths one by one, so that the direction of narrowing down can be uniquely determined.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a flowchart illustrating the operation of one embodiment of the present invention.

FIG. 3 is a layout diagram displayed in advance for selecting a wiring.

FIG. 4 is a layout diagram displayed by a first wiring extracting unit in one embodiment of the present invention.

FIG. 5 is a layout diagram displayed by a text extracting unit according to one embodiment of the present invention.

FIG. 6 is a layout diagram displayed by steps A71 to A81 of FIG. 2 in the second wiring extracting means according to one embodiment of the present invention.

FIG. 7 is a layout diagram displayed in the case of steps A72 to A82 in FIG. 2 in the second wiring extracting means in one embodiment of the present invention.

FIG. 8 is a block diagram showing a configuration of a conventional technique.

FIG. 9 is a flowchart illustrating the operation of the conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Input device 2 Data processing device 3 Display device 20 Wiring extracting means 22 First wiring extracting means 23 Text extracting means 24 Second wiring extracting means t1, t2, t3, t4 Through hole D Display screen FB1, FB2, FB3, FB4, FB5 circuit block I01, I02, O01 Text L1 Wiring selected by input means L21, L22, L23, L3, L4, L5 Wiring T Text selection screen

Claims (2)

(57) [Claims] 1. A screen displayed LSI emphatically wiring highlighting system for displaying all other wiring pattern comprising an arbitrary wiring pattern identical to the nodes selected from the layout view of, through the input means A first wiring extracting means for extracting and highlighting the selected wiring (referred to as “selected wiring”) and all other wirings having the same node as the selected wiring; and a first wiring extracting means. a text extracting unit that extracts and displays text data attached to extracted the wiring from the object selection lines, is extracted in the first wiring extracting means
Displayed by the text extracting means of the wiring
A second wiring extracting means for highlighting the extracting only wiring constituting the connection path between from the text data and is wiring with the text data selected via said input means, with a A wiring pattern highlighting system. (A) Wiring of a desired wiring layer (referred to as “selected wiring”) in a layout diagram displayed on a screen is input via an input means.
And selecting and, (b) of the object to be selected wiring, and the connected the selected wiring and the contact hole or via through hole wiring layer
A step of extracting highlight all other wiring, and displaying on the screen by extracting the text data that is attached to the wiring extracted in (c) said step (b), (d) the From the text data displayed on the screen
Select desired text data via the input means
And that steps and extracted with (e) the and the selected line, the step (b)
Only the wiring connection between the step (d) text data selected is attached by wires to extract out the wire, the object to be
Highlighting the selected wiring and the extracted wiring. A method for highlighting a wiring pattern.