JP2947216B2 - Electronic circuit drawing input device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a D (computer-assisted) device, and more particularly to an electronic circuit drawing input device.

[0002]

2. Description of the Related Art FIG. 8 shows an example of a system configuration of a conventional electronic circuit drawing input device. Referring to FIG. 8, the symbol library data unit 1 includes NAND (Negative AND), NOR (Negative OR), AND (logical AND), and OR.
(Logical sum), symbol coordinate information 10 of lines, circles, etc., constituting logical symbols such as F / F (flip-flop). In the input operation in the electronic circuit drawing input device, the electronic circuit drawing input device receives a command from a circuit drawing creator, and the circuit drawing input unit 21
The symbol to be arranged is called from the symbol library data unit 1 by a symbol call command, and arranged or rearranged and erased on the circuit diagram.
Editing of an electronic circuit diagram is performed, such as wiring between symbols.

[0003] The electronic circuit drawing input device transmits circuit drawing creation state information until a circuit drawing holding command is executed.
It is stored in the data section 210 of the circuit drawing input section 21.

[0004] When the electronic circuit diagram input device executes a save command for a circuit diagram, the data portion 210 of the circuit diagram input section 21 is stored in the circuit diagram information data section 31.

In inputting and editing a circuit diagram in this conventional electronic circuit diagram input device, a circuit creator uses a logical sum / logical product symbol having a plurality of equivalent inputs in the circuit diagram, an n-bit F / F ( When changing the logic, such as changing the number of pins of a logic symbol to a portion using a logic symbol having a variable pin such as a flip-flop, the electronic circuit drawing input device converts the arranged symbol into a circuit drawing. Erasing from the information data section 31 or the data section 210 of the circuit diagram input section 21 and newly adding necessary symbols,
The logic has been changed by calling from the symbol library data unit 1 and rearranging the called symbols on the circuit diagram.

[0006]

However, in the conventional electronic circuit diagram input device, the number of input bits is changed to change the input side length of the symbol, for example, changing a 2-input AND gate to a 3-input AND gate. When such an operation is performed, (a) “erasing the original symbol”, (b)
Unless the operation of “symbol calling” and (c) “arranged called symbols” is performed three times in total, the logic cannot be changed, the operation is complicated, and therefore, the symbols that must not be deleted are deleted. There is a problem that an artificial error such as erasing may occur.

[0007] For example, in Japanese Patent Application Laid-Open No. Hei 5-135123, the pins to be connected are determined from the relationship between the connection object and the connection, so that reconnection when the connection object is enlarged or reduced is unnecessary. An electronic circuit drawing creation device has been proposed. However, this conventional apparatus cannot automatically update a symbol when changing the number of pins of a logical symbol having a variable pin.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned problems, and has as its object to provide a logical sum / logical product symbol having a plurality of equivalent inputs in a circuit diagram, an n-bit F / F. When the logic is changed in a portion using a logic symbol having such a variable pin, the logic can be changed only by performing a single visual operation of extending or shortening the length of the input side. A circuit diagram input device is provided.

[0009]

In order to achieve the above object, an electronic circuit diagram input device according to the present invention comprises a logical symbol having a variable number of pins and a length corresponding to the length of the input side of the logical symbol. A bit number parameter for setting information on whether to create a bit input symbol, and a template file storing logic of the number of input pins supported by the logic symbol as a library, and input of a logic symbol on a circuit diagram When a change in edge length is detected,
Referring to the template file corresponding to the logical symbol from the information on the input side length after the change of the logical symbol, the number of bits of the input side of the logical symbol after the change is determined, and each of the pins added by the change is determined. Calculate the coordinates,
It is created as a new logical symbol, and the changed logical symbol is replaced with a new logical symbol.

In the present invention, there is provided means for calculating the coordinates of the added pin so that the pin coordinates of the new logical symbol and the pin coordinates of another logical symbol in the circuit diagram do not overlap. Features.

Further, according to the present invention, symbol coordinate information such as lines and circles constituting a symbol, a logical sum / logical product symbol having a plurality of equivalent inputs, and a logical symbol having a variable pin such as an n-bit flip-flop are provided. A bit number parameter for setting information on how many bits of an input symbol to create with respect to the length of an input side having the input side, and a template file defining logical information supported by each symbol are stored. A symbol library data portion to be held, a circuit diagram creator performs operations such as calling a symbol from the symbol library data portion, and circuit diagram input means for holding information on a current circuit diagram creation state as a data portion; When information stored in the data section of the circuit diagram input means is stored and held by executing a storage command. And drawing information data portion, the data portion, or the input side length of symbols held in the circuit drawing data unit, the input side length of symbols held in the symbol library data portion of the circuit diagram input means,
Symbol detection means for detecting a change of the symbol, and a circuit part for detecting symbol coordinate data other than the symbol whose current input side length is being operated in the data part of the circuit drawing input means or the circuit drawing data part. Symbol pin coordinate detecting means, input side length of the changed symbol detected by the symbol detecting means, information in the template file, and symbol coordinates detected by the other symbol pin coordinate detecting means in the circuit drawing And pin bit coordinate calculating means for calculating the number of bits after the input side length has been changed and the added pin bit coordinates, and creating new symbol data on which the input side length has been changed. Change of the input side length of the data part or the circuit drawing information data part of the circuit drawing input means by new symbol data Means replaces symbol replaces the met original symbols, characterized in that it comprises a.

[0012]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a system configuration of an embodiment of an electronic circuit drawing input device of the present invention. Referring to FIG. 1, in an electronic circuit diagram input device of the present invention, in a preferred embodiment, (a) symbol coordinate information (1 in FIG.
0), a logical sum / logical product symbol having a plurality of equivalent inputs, and a symbol of how many bits are input for the length of the input side of a logical symbol having a variable pin such as an n-bit flip-flop. Template file that defines the bit number parameter for setting the information on whether or not to perform, and the logical information supported by each symbol (11 in FIG. 1)
And a symbol library data section (FIG. 1)
1) and (b) The creator of the circuit drawing performs an operation such as calling a symbol from the symbol library data section, and also stores information on the current circuit drawing creation state in the data section (FIG. 1).
Circuit drawing input means (2 in FIG. 1) held as 20)
And (c) a circuit drawing information data section (3 in FIG. 1) for storing and holding information held in the data section (20 in FIG. 1) of the circuit drawing input means (2 in FIG. 1) by executing a save command.
And (d) a data portion (2 in FIG. 1) of the circuit drawing input means.
0) or a change in the input side length of the symbol held in the circuit drawing data section (3 in FIG. 1) and the input side length of the symbol held in the symbol library data section (1 in FIG. 1) is detected. Symbol detection means (4 in FIG. 1);
(E) A circuit drawing for detecting symbol coordinate data other than the symbol whose current input side length is being operated in the data part (20 in FIG. 1) of the circuit drawing input means or the circuit drawing data part (3 in FIG. 1). The other symbol pin coordinate detecting means (5 in FIG. 1), (f) the input side length of the changed symbol detected by the symbol detecting means, the information in the template file (11 in FIG. 1), and the circuit Pin bit coordinate calculating means for inputting symbol coordinate data detected by another symbol pin coordinate detecting means (5 in FIG. 1) in the drawing and calculating the number of bits after the change of the input side length and the added pin bit coordinates. (6 in FIG. 1) and (g) New symbol data in which an operation of changing the input side length is created, and the data portion (20 in FIG. 1) of the circuit drawing input means or Comprising road drawing information data unit symbol replacement means replaces the original symbol of a change of the input side length of (3 in FIG. 1) (8 in FIG. 1), the.

In the embodiments of the present invention, each of the above-mentioned means is realized by being controlled by a program executed by a computer constituting the electronic circuit diagram input device. These programs are loaded into a computer from a recording medium and executed.

Hereinafter, embodiments of the present invention will be described.
Differences from the conventional electronic circuit drawing input device described with reference to FIG. 8 will be described.

The "input side length" refers to the length of the side on which the input pins are arranged side by side as shown in FIG.

Referring to FIG. 1, in this embodiment, a template file 11 is stored in the symbol library data section 1 in addition to the symbol coordinate information 10 similar to the above-mentioned prior art. In this template file 11, information indicating how many bits of a symbol to create for the length of an input side is stored as a logical sum / logical product symbol having a plurality of equivalent inputs as shown in an example in FIG. n
Each logical symbol having a variable pin such as a bit flip-flop (F / F) is set as a bit number parameter, and all the logical information that can be supported is defined.

Referring to FIG. 5, the bit number parameter includes: B: number of bits, L: input side length, K: logical sum, logical product, and bit constant of variable pin symbol.

Each template file includes the bit number parameter (B = L / K) and all logical information that can be supported as a library, for example, 2 and 2 (logical AND gate) and 10 an for an AND logical product template.
d (10-input AND gate) and the like are stored.

Symbols other than a logical sum / logical product symbol having a plurality of equivalent inputs and a logical symbol having a variable pin such as an n-bit F / F have no template file 11.

The circuit creator may change the logic by
When the input side length of the symbol having the template file 11 is changed, for example, when the symbol is extended using a pointing means such as a mouse drag operation on the screen (FIG. 4).
(See (B)), the symbol detector 4 detects a change in the input side length of the symbol, and inputs the detected input side length data to the pin bit coordinate calculator 6.

The pin bit coordinate calculation section 6 sets the pin coordinates of the newly created new symbol data 7 so that the pin coordinates of the circuit drawing and other symbols do not overlap with each other. The input information and the coordinates of the other symbol pin detected by the other symbol pin coordinate detection unit 5 in the circuit diagram are input to the pin bit coordinate calculation unit 6 to create new symbol data 7 having a desired number of bits. .

Here, the "other symbol pin in the circuit diagram" means a pin of a symbol other than the symbol whose input side length has been changed.

The symbol replacement unit 8 uses the new symbol data 7 to generate symbol data or the circuit drawing information data unit 3 corresponding to the data unit 20 of the circuit drawing input unit 2.
Of the original symbol data.

The new symbol data 7 is stored as user data in the circuit diagram information data section 3.

[0025]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; The configuration of the example of the present invention is the same as the configuration of the above-described embodiment shown in FIG.

[Embodiment 1] FIG. 6 is a diagram showing a part of a data file structure of a symbol library data section 1 according to an embodiment of the present invention. ), A 4-input logical product (4 and), a 2-input logical sum (2 or), and a selector. FIG.
, “/” Indicates a directory hierarchy.

2 and sym. One file (the file sym.1 stored in the directory 2and under the directory 74ls) stores 2and symbol coordinate information. Also, 2 and templat
e (template file) includes and and shown in FIG.
Like the template file, the input side length L and
The setting for calculating the number of bits from the and bit constant K and the logic that can be supported as a library are defined.

FIG. 7 is a diagram showing a part of the data file structure of the circuit drawing information data unit 3 in one embodiment of the present invention.

Referring to FIG. 7, the creator of the circuit diagram sets "t
The top-level circuit drawing “op” is created, and the hierarchical information of the circuit drawing, the connection information between symbols, and the symbol coordinate information are obtained. "Log" under the directory "top"
ic. 1 ".

The top circuit drawing information logic. 1
User macros mac1 and mac2 used in
Each of the circuit diagram information logic. 1 and symbol coordinate information sym. 1 is shown.

When the circuit creator prepares a 2an
By changing the input side of d, the pin bit coordinate calculator 6
The new 4and symbol data created in step 4 is stored in the circuit diagram information data section 3 shown in FIG.
m. 2 is stored.

FIG. 2 is a flowchart for explaining the processing flow of one embodiment of the present invention. The operation of the embodiment of the present invention will be described below.

When it is necessary to change a portion using, for example, 2and (see FIG. 4A) on the circuit diagram to 4and, the creator of the circuit diagram shows in FIG. 4B. In this way, the length of the input side of the symbol is extended with a mouse or the like to a length that matches the input pin bit number 4and of the symbol to be changed (step 1 in FIG. 2).

As shown in FIG. 4 (B), when the input side length is changed by the circuit diagram creator, if the system has not executed the circuit diagram save command, the data of the circuit Part 20 holds 2and sym. 1 changed input side length and symbol library data section 1
2 and sym. 1 is input to the symbol detector 4, the symbol detector 4 detects a change in the input side length, and, when the change is detected, the 2 and sym symbols held by the data section 20 of the circuit diagram input section 2. . The input side length data after the change of 1 is input from the symbol detector 4 to the pin bit coordinate calculator 6 (step 2 in FIG. 2).

After the execution of the circuit diagram storage command of the system, the circuit diagram information “logic. 2an held by 1
d's sym. 1 and the 2 and sym.
1 is input to the symbol detector 4 to detect a change in the input side length, and when the change is detected, the circuit diagram information log
ic. 1 holds 2 and sym. The input side length data after the change of 1 is input from the symbol detector 4 to the pin bit coordinate calculator 6 (step 2 in FIG. 2).

Further, a template file included in the symbol library data unit 1 of 2 and whose input side length is changed on the circuit diagram is input to the pin bit coordinate calculation unit 6 (step 3 in FIG. 2).

From the information obtained in steps 2 and 3, the pin bit coordinate calculation unit 6 calculates the number of bits of the input side as 4 bits, and calculates the input pin coordinates of the added 2 bits (FIG. 2). Step 4).

By calculating the input pin coordinates in step 4 above, the 4 symbol file sym. 2 (step 5 in FIG. 2).

The created new symbol data 4and file sym. 2, the symbol replacement unit 8
The 2and sym.data stored in the data section 20 of the circuit diagram input section 2 is stored. 1 or the topological information. 2 and s used in 1
ym. 1 is replaced (step 6 in FIG. 2).

The symbol library data section 1 contains a template file and sym. 1 exists, and the new symbol data 4 and sym. 2 is 4 and / s as a user library in the circuit drawing information data section 3 as shown in FIG.
ym. 2 (step 7). The file name sym. 1, sym. An extension of 2 (that is, a numeral such as “1” or “2” after the symbol “.”) Indicates a symbol version.

Also, in consideration of changing the number of bits of a newly created symbol again, the and template file is simultaneously stored under 4and of the circuit drawing information data unit 3.

Changing the input side length of the symbol once changed by the user is similar to the flow described above in step 1.
Step 7 can be performed.

[Second Embodiment] FIG. 3 is a flowchart for explaining a processing flow of a second embodiment of the present invention.

In this embodiment, the first embodiment is further designed so that the symbol pin coordinates of the new symbol data and other symbol pin coordinates in the circuit diagram do not overlap. As shown in FIG. 3, in the present embodiment, in the flowchart shown in FIG. 2, the detected other symbol pin coordinate reading step 1-1, the calculation is performed so as not to overlap with the other symbol pin coordinates in the circuit diagram. Step 4-
1 is newly added.

Referring to FIG. 3, in the present embodiment,
4 and 2 in which the input side length is changed in step 1 (FIG.
All the other symbol pin coordinates except for the reference symbol coordinates are detected by the other symbol pin coordinate detector 5 in the circuit diagram, and the detected other symbol pin coordinates are read (step 1-1).

As in the first embodiment, the pin bit coordinate calculation unit 6 determines the number of bits of the input side from the information of the subsequent steps 2 and 3 and the information of the other symbol pin coordinates read in step 1-1. The input terminal coordinates of the added 2 bits are calculated such that the pin coordinates of the symbol created as new symbol data do not overlap with the other symbol pin coordinates read in step 2 (step 4, step 4). Step 4-1). Step 5 in FIG.
Steps 7 to 7 are the same as those in the first embodiment, and a description thereof will not be repeated.

[0047]

As described above, according to the electronic circuit diagram creating apparatus of the present invention, when it is necessary to change the logic in a circuit diagram using a logical symbol having an equivalent input pin and a variable bit pin. In addition, by simply changing the length of the input side of the symbol, the number of bits of the input pin can be changed to change the logic. And "arrangement" without changing the logic. For this reason, the present invention improves the operability of the electronic circuit diagram creation device,
Work efficiency can be improved, and human errors such as careless mistakes can be particularly reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a system configuration according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a processing flow according to an embodiment of the present invention.

FIG. 3 is a flowchart illustrating a processing flow according to an embodiment of the present invention.

FIG. 4 is a diagram for explaining one embodiment of the present invention;
It is a figure showing an example at the time of expanding and contracting the input side length of a symbol.

FIG. 5 is a diagram for explaining one embodiment of the present invention;
FIG. 11 is a diagram illustrating an example of a template file of a symbol library data section.

FIG. 6 is a diagram for explaining one embodiment of the present invention;
FIG. 4 is a diagram illustrating an example of a data file structure of a symbol library data section.

FIG. 7 is a diagram for explaining one embodiment of the present invention;
It is a figure showing the example of the data file structure of the circuit drawing information data part.

FIG. 8 is a system configuration diagram of a conventional electronic circuit drawing input device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Symbol library data part 2 Circuit drawing input part 3 Circuit drawing information data part 4 Symbol detection part 5 Pin detection in circuit drawing / other symbol pin coordinate part 6 Pin bit coordinate calculation part 7 New symbol data 8 Symbol replacement part 10 Symbol coordinate information 11 Template File 20 Data part of circuit drawing input part

Claims (4)

(57) [Claims] 1. A bit number parameter for setting, for a logical symbol having a variable number of pins, information on how many bits of a symbol to input to a length of an input side of the logical symbol, and The logic symbol includes a template file storing the logic of the number of input pins supported as a library. When the input side length of the logic symbol is changed on the circuit diagram, the change is detected, and Referring to the template file corresponding to the logical symbol from the information on the input side length after the change, the number of bits of the input side of the logical symbol after the change is determined, and each coordinate of the pin added by the change is calculated. A new logical symbol, and replacing the changed logical symbol with a new logical symbol. Surface input device. 2. The apparatus according to claim 1, further comprising means for calculating the coordinates of the added pin so that the pin coordinates of the new logical symbol do not overlap with the pin coordinates of another logical symbol in the circuit diagram. The electronic circuit drawing input device according to claim 1. 3. Symbol symbol information such as lines and circles constituting a symbol, a logical sum / logical product symbol having a plurality of equivalent inputs, and a logical symbol having a variable pin such as an n-bit flip-flop. A symbol library that stores and holds a bit number parameter that sets information on how many bits of a symbol to create with respect to the length of an input side, and a template file that specifies logical information supported by each symbol. A data part, a circuit diagram creator performs an operation such as calling a symbol from the symbol library data part, and holds information on a current circuit drawing creation state as a data part; and the circuit diagram input means. The circuit diagram information data for storing and holding the information held in the data section by executing a save command. And changing the input side length of the symbol held in the symbol library data section and the input side length of the symbol held in the data section or the circuit drawing data section of the circuit drawing input means. A symbol detecting means for detecting; and a data part of the circuit drawing input means, or other symbol pin coordinates in the circuit drawing for detecting symbol coordinate data other than the symbol whose current input side length is being operated in the circuit drawing data part. Detecting means, the input side length of the changed symbol detected by the symbol detecting means, information in the template file, and symbol coordinate data detected by the other symbol pin coordinate detecting means in the circuit drawing, For calculating the number of bits after the input side length has been changed and the added pin bit coordinates Generating new symbol data on which an operation of changing the input side length has been performed, and using the new symbol data, if the input side length of the data section of the circuit drawing input means or the input section length of the circuit drawing information data section has been changed. An electronic circuit drawing input device, comprising: symbol replacement means for replacing the symbol. (A) Symbol coordinate information such as lines and circles constituting a symbol, a logical sum / logical product symbol having a plurality of equivalent inputs, and a logical symbol having a variable pin such as an n-bit flip-flop are provided. A bit number parameter that sets information about how many bits of a symbol to create for the length of the input side that is input, and a template file that specifies the logical information supported by each symbol Circuit drawing input means for performing operations such as retrieving symbols from the symbol library data section to be performed and holding information on the current circuit drawing creation state in the data section; (b) the data section of the circuit drawing input means, or Circuit drawing data for storing and holding information held in the data section of the circuit drawing input means by executing a save command Symbol detection means for detecting a change in the input side length of the symbol and the input side length of the symbol held in the symbol library data section, which are stored in the data section of the circuit diagram input section; Alternatively, another symbol pin coordinate detecting means in the circuit drawing for detecting symbol coordinate data other than the symbol whose current input side length is being operated in the circuit drawing data portion, and (d) a change detected by the symbol detecting means. The input side length of the symbol, the information in the template file, and the symbol coordinate data detected by the other symbol pin coordinate detecting means in the circuit diagram are input, and the number of bits after the change of the input side length and A pin bit coordinate calculating means for calculating the added pin bit coordinates, and (e) a new symbol data for which an operation of changing the input side length has been performed. (A) to (d), a symbol replacement unit that creates a data and replaces the original symbol whose input side length of the data part or the circuit drawing information data part of the circuit drawing input means has been changed with the new symbol data. A recording medium on which a program for causing each means of (e) to function on a computer constituting the electronic circuit drawing input device is recorded.