JPH04100174A - Automatic generation device for circuit diagram - Google Patents

Abstract

PURPOSE:To automatically generate a circuit diagram which is close to a manually generated circuit diagram and easy to see by recognizing signals which need not be wired on the circuit diagram and not regarding those signals as objects to be wired, but displaying the present of them clearly instead. CONSTITUTION:A unwired signal recognizing means 2 calculates the numbers of branches of respective signals by a branch quantity calculating means 21 and extracts candidates for unwired signals. An unwired signal determining means 22 determines the unwired signals in consideration of pin attributes of elements at branch destinations and an unwired signal registering means 23 registers them in internal data structure. Then an unwired signal elucidating means 5 selects one of the unwired signals recognized by the unwired signal recognizing means 2 and a branch destination selecting means 32 selects one of the elements at the branch destinations. Consequently, the circuit diagram which is automatically generated can be made easy to see.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic circuit diagram generation device that generates a circuit diagram from circuit connection information.

〔overview〕

The present invention is a means for displaying automatically generated circuit diagrams that makes the wiring diagram easier to see by omitting wiring for clear signals such as clock signals.

[Conventional technology]

Conventionally, this type of automatic circuit diagram generation apparatus has wired all the elements after arranging the elements.

[Problems to be Solved by the Invention] In this way, in the conventional example, all the wiring is done, so the circuit diagram is divided into many elements such as clock signals, and the signals have clear meanings. In this case, signals for which wiring would be omitted are also subject to wiring, which may make the automatically generated circuit diagram difficult to read or increase the number of subject lines, which increases the processing time during automatic generation or increases the number of wiring lines. There is a drawback that it may not be possible.

The present invention eliminates these shortcomings by creating an automatic circuit diagram that recognizes signals that do not need to be routed on a circuit diagram, does not route these signals, and instead indicates their presence. The purpose is to provide a generation device.

[Means to solve the problem]

The present invention provides a display means for displaying a circuit diagram including an element, a connection information input means for inputting connection information of the circuit diagram including the element, converting it into internal data and storing it, and arranging the element based on the internal data. a placement unit that generates placement information for determining coordinates; a wiring unit that generates wiring information that determines wiring routes between elements; and displaying the placement information generated by the placement unit and the wiring information generated by the wiring unit. In the automatic circuit diagram generation device, the automatic circuit diagram generation device is equipped with a layout given to the device and a wiring result output device, which recognizes connection information related to wiring that does not need to be displayed on the display device from the connection information input by the connection information input device. The present invention is characterized by comprising a wiring signal recognition means and a non-wire signal display means for displaying data indicating the existence of the connection information recognized by the non-wire signal recognition means on the display means.

In addition, in place of the non-wire signal recognition means, an external specified input means is provided with connection information related to wiring that does not need to be displayed on the display means, and the connection information input by this external specified input means is converted into internal data. The non-wire signal registering means may include a non-wire signal registering means for storing, and the non-wire signal clarifying means may display on the display means data indicating the existence of the connection information stored by the non-wire signal registering means.

[Effect]

Wiring, such as a clock signal, which branches to a large number of elements and through which a signal with a clear meaning passes, is omitted in a manually created circuit diagram. In such a case, the present invention displays signal names and symbols near the connection points of elements, eliminates the display of wiring, and makes the display easier to see.

〔Example〕

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

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

In this embodiment, as shown in FIG. 1, connection information input means 1, non-wired signal recognition means 2, arrangement means 3, wiring means 4,
It is composed of a non-wiring signal clarifying means 5 and a placement and wiring result main means 6.

Here, as shown in FIG. 2, the non-wired signal recognition means 2 includes a branch number calculation means 21, a non-wired signal determination means 22, and a non-wired signal registration means 23, and also includes a non-wired signal clarifying means 5. As shown in FIG.
, a branch destination end determining means 34, and a non-wiring signal selection end determining means 35.

That is, in this first embodiment, as shown in FIGS. 1 to 3, a display means (not shown) for displaying a circuit diagram including an element, connection information of the circuit diagram including the element is input, and the internal Connection information input means 1 that converts into data and stores it, placement means 3 that generates placement information that determines the placement coordinates of elements based on this internal data, and wiring that generates wiring information that determines wiring routes between elements. means 4, and placement and wiring result output means 6 for providing the placement information generated by the placement device 3 and the wiring information generated by the wiring device 4 to the display device,
Furthermore, as a feature of the present invention, the non-wiring signal recognition means 2 recognizes connection information related to wiring that does not need to be displayed on the display means from the connection information input by the connection information input means 1, and A non-wire signal indicating means 5 is provided for displaying data indicating the existence of the connection information recognized by the signal recognition means 2 on the display means.

That is, in another embodiment, instead of the non-wire signal recognition means 2, - an external specification input means 61 to which connection information related to wiring that does not need to be displayed on the display means is given, and a connection input by this external specification input means; The non-wire signal registration means 62 converts information into internal data and stores it, and the non-wire signal display means 5 displays data indicating the existence of the connection information stored by the non-wire signal registration means 62 on the display means. The configuration is as follows.

Next, the operation of this embodiment will be explained with reference to the drawings.

When circuit connection information is input, the connection information input means 1 converts it into an internal data structure and stores it. Next, the non-wire signal recognition means 2 calculates the number of branches of each signal using the branch number calculation means 21, and extracts candidates for non-wire signals. The non-wire signal determining means 22 determines a non-wire signal based on this, taking into consideration the pin attributes of the branch destination element, and the non-wire signal registering means 23 registers this in the internal data structure. Next, the placement means 3 determines the placement coordinates of all the elements, and the wiring means 4 uses the non-wire signal recognition means 2 to identify the non-wire signal and J
IJ! Determine the wiring routes for all signals other than those specified. The stage 5 for specifying non-wired signals is the non-wired signal selection means 3.
1, one of the non-wire signals recognized by the non-wire signal recognition means 2 is selected, and the branch destination selection means 32 selects one element as the branch destination of this signal.

FIG. 4 shows an example of elements selected in this way, with element c41
, signals S42 and S43 have already been placed and wired.

The symbol placement means 33 places a symbol sym44 and a signal name S45 that clearly indicate a non-wired signal on this signal. Next, the branch destination end determination means 34 determines whether all branch destination processing has been completed, and if not, the processing from the branch destination selection means 32 is repeated. When the processing of all branch destinations is completed, the non-wired signal selection completion determination means 35 determines whether there are any other unprocessed non-wired signals, and if so, the processing from the non-wired signal selection means 31 is performed. repeat. Finally, the placement and wiring result output means 6 outputs the results as illustrated in FIG. 5, and the process ends.

FIG. 6 is a block diagram of an embodiment in which the non-wired signal recognition means 2 of the embodiment is realized by another means, and is composed of external designation input means 61 and non-wired signal registration means 62. In this embodiment, the non-wire signal is taken in from the outside by the external designation input means 61, and the non-wire signal registration means 62 registers it in the internal data structure.

〔Effect of the invention〕

As explained above, the present invention recognizes signals that do not need to be wired on a circuit diagram, and does not include these signals as wiring targets, but instead clearly indicates their existence. It is possible to make the circuit diagram more similar to a manually created circuit diagram and to make it easier to see, and also has the effect of shortening the processing time during automatic generation and reducing the number of signals that cannot be wired.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of an embodiment of the present invention. FIG. 2 is a diagram showing the configuration of the non-wired signal recognition means 2 of FIG. 1. FIG. 3 is a diagram showing the configuration of the non-wire signal clarifying means 5 of FIG. 1. FIG. 4 is a diagram showing an example of elements selected by the branch destination selection means 32 of FIG. 3. FIG. 5 is a diagram showing an example of a circuit diagram generated by this method. FIG. 6 is a diagram showing the configuration of another embodiment in which the non-wired signal recognition means 2 of FIG. 1 is realized by a different means. DESCRIPTION OF SYMBOLS 1... Connection information input means, 2... Non-wiring signal recognition means, 3... Arranging means, 4... Wiring means, 5... Non-wiring signal clarifying means, 6... Placement and wiring Result output means, 21... Branch number calculation means, 22... Non-wire signal determining means, 23... Non-wire signal registration means, 31...
Non-wired signal selection means, 32...branch destination selection means, 33
. . . Symbol arrangement means, 34 . . . Branch destination end determination means, 35 . . . Non-wired signal selection end determination means, 61 .
- External specification input means, 62... non-wired signal registration means.

Claims (1)

[Claims] 1. A display means for displaying a circuit diagram including an element, a connection information input means for inputting connection information of the circuit diagram including an element, converting it into internal data and storing it, a placement unit that generates placement information that determines placement coordinates of elements based on the arrangement; a wiring unit that generates wiring information that determines wiring routes between elements; and placement information generated by the placement unit and wiring generated by the wiring unit. In an automatic circuit diagram generation device comprising a layout and wiring result output means for supplying information to the display means, connection information related to wiring that does not need to be displayed on the display means is obtained from connection information input by the connection information input means. and a non-wire signal display means for displaying data indicating the existence of connection information recognized by the non-wire signal recognition means on the display means. generator. 2. In place of the non-wiring signal recognition means, an external specified input means is provided with connection information related to wiring that does not need to be displayed on the display means, and the connection information input by this external specified input means is converted into internal data. 2. The method according to claim 1, further comprising a non-wire signal registering means for storing the non-wire signal, and the non-wire signal clarifying means is configured to display data indicating the existence of the connection information stored by the non-wire signal register on the display means. Automatic circuit diagram generation device.