JPH04675A - Circuit graphic processor - Google Patents

Abstract

PURPOSE:To attain the reading of an arbitrary handwriting circuit, the processing of network data and the output processing of the designated circuit diagram by making a reading means and the specification circuit diagram correspond and providing a generating means to generate the network data of circuit connection and an output means to output in a designated representation form. CONSTITUTION:A circuit diagram 21 is handwritten 50 freely, a circuit name, a logic symbol name, a terminal and an internal node name are written in an designated form, automatic reading 22 and 51 is executed as it is and a circuit diagram having a designated form is generated. Besides, also network data 53 of the circuit diagram 58 are generated at the same time. In a case, when the relation of a logic diagram 50 and a symbol is defined 56, the output of the logic circuit diagram 58 corresponding to an arbitrary specification and the network data 53 to the diagram can be executed. Accordingly, the reading 22 and 51 of only the circuit name, the logic symbol name, the terminal name and the internal node name and so on in the circuit diagram handwritten without the processing of graphic recognization, the generation and the output of the logic circuit diagram 58 corresponding to the designated specification and the network data 53 are attained.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention reads the title, input/output terminals, node symbols in the circuit, and symbols of circuit functions in a logic circuit diagram handwritten in a certain prescribed format. The present invention relates to a circuit diagram processing device that generates circuit network data and uses it to create a logic circuit diagram in a specified format and input logic circuit simulation as needed.

[Conventional technology]

In conventional circuit diagram processing, each basic unit circuit (gate, gate, Logic circuit diagrams are created one by one by specifying symbols for input/output terminals and internal nodes based on flip-flops, etc.). Based on the network data of the circuit diagram, conversion processing is performed into input/output data for logic circuit simulation. In this case, each logic circuit is input manually, which requires labor and time to input the circuit diagram.

In addition to the above, handwritten drawings are loaded into an automatic reading device, circuit diagrams corresponding to basic logic circuits such as gates and flip-flops are read, and the figures, symbols, and characters are recognized.

Then, network data of the logic circuit is created and converted into a language format for simulation as necessary. At this time, the circuit diagram outputs the same logic diagram as the input figure.

In the above cases, handwritten figures are read along with letters and symbols, making it difficult to increase the reading recognition rate. Also, the processing time for reading and recognition is long.

FIG. 6 is a block system diagram showing a conventional character/graphic processing device. FIG. 7 is a flowchart showing the processing procedure of a conventional device. In FIG. 6, 1 is a handwritten circuit diagram, 2 is a figure/character reading device, 3 is a mouse input device, 4 is a key input device, 5 is a computer main body that processes the circuit diagram, 6 is a graphic data file and A floppy disk device for storing programs, 7 a display device such as a CRT, 8 an output device such as a printer/plotter for outputting processing results, and 9 an auxiliary memory device for storing a large amount of programs and data.

Next, the operation of the conventional device will be explained using FIGS. 6 and 7.

First, a handwritten circuit diagram 1 is created (step 10)
Then, it is set in the figure/character reading device 2, and the figures/characters are read (step 11). Using commands from the mouse input device 3 or key input device 4, the computer main body 5 processes to search the graphic library of the floppy disk device 6, such as graphic data, based on the read graphics and characters. Then, the feature parameters are extracted, and character/figure recognition processing is performed using the corresponding code (step 12.13). The recognized figure, character, and symbol data is converted into language data to be applied to the logic simulation by a program installed in the computer main body 5 (step 14).

The mouse input device 3 or the key input device 4 is used to designate logic diagram output or logic simulation using a command (step 15).

When outputting a logic diagram, a logic diagram output command is given and the logic diagram is output (step 16). When performing a logical simulation, output processing of input data for the simulation is performed according to the specification (step 17). At this time, the generated data of the logic diagram can be output to the display device 7 for confirmation. Further, if necessary, the data is outputted to the output device 8 to obtain a hard copy. At this time, in order to store these data internally, they are output to the auxiliary memory device 9 and stored therein.

As explained above, in conventional circuit diagram processing devices, a circuit diagram that describes circuit diagrams, circuit names, terminals, and symbols in a prescribed format is created by hand, and the diagrams and characters are input and processed. The features of the handwritten drawing are extracted and pattern recognition processing is performed.

Then, it generates a circuit network and outputs a logic circuit diagram.

As described above, when a conventional device reads a handwritten figure and performs unspecified pattern recognition processing, it becomes difficult to recognize the figure. Therefore, considerable restrictions must be placed on the target figure, and it is difficult to improve recognition accuracy. Further, it takes a lot of time to read and recognize the circuit diagram.

[Problem to be solved by the invention]

With conventional circuit diagram processing devices, even when automatically loading a handwritten circuit diagram, it is necessary to either load the image and store it in memory as is, or to memorize characteristic parameters and access the data corresponding to them. Then, the read and recognized data is reproduced based on the parameters. The logic diagram output at this time is limited to a diagram of a certain format.

As described above, in the conventional method, processing time is increased for recognition, and it is difficult to improve the recognition rate of these handwritten figures, and errors are likely to occur depending on the writing style. Furthermore, since logic diagrams are limited to a certain standard format, if the format needs to be changed, it must be created again from the beginning.

The present invention has been made in view of these points, and its purpose is to improve the recognition rate of handwritten circuit diagrams and shorten processing time, and to read any handwritten circuit and its network. The purpose is to enable data processing and output processing of specified circuit diagrams.

[Means to solve the problem]

In order to solve such problems, the present invention provides reading means for reading and processing data such as circuit names, circuit symbol names, terminal names, node names, circuit symbol layouts, and sizes, and a reading means for reading and processing data such as circuit names, circuit symbol names, terminal names, node names, circuit symbol layouts, and sizes, and a reading means for reading and processing data such as circuit names, circuit symbol names, terminal names, node names, circuit symbol layouts, and sizes, and a reading means for reading and processing data such as circuit names, circuit symbol names, terminal names, node names, circuit symbol layouts, and sizes, and a reading means for reading and processing data such as circuit names, circuit symbol names, terminal names, node names, circuit symbol layout, and size, and a reading means for reading and processing data such as circuit names, circuit symbol names, terminal names, node names, circuit symbol layouts, and sizes, and a reading means for reading and processing data such as circuit names, circuit symbol names, terminal names, node names, circuit symbol layouts, and sizes, and a reading means for reading and processing data such as circuit names, circuit symbol names, terminal names, node names, circuit symbol layout, and size, and a reading means that recognizes the above data and performs processing according to a specified standard. a generation means that performs conversion processing based on a format, matches it with a circuit diagram of an arbitrarily specified standard, and generates a circuit diagram according to the specification and network data of circuit connections in this circuit diagram; and a circuit diagram and network data. An output means for outputting in a specified expression format is provided.

[Effect]

With the circuit diagram processing device according to the present invention, you can freely draw a circuit diagram by hand, write circuit names, logical symbol names, terminals, and internal node names in a specified format, and then automatically read and process the circuit diagram in the specified format. generate. At the same time, network data for the circuit diagram is also generated. In this case, by defining the relationship between the logic diagram and its symbols, it is possible to output a logic circuit diagram compliant with any standard and network data for this diagram.

Therefore, the circuit diagram processing device according to the present invention reads and specifies only circuit names, logical symbol names, terminal names, internal node names, etc. in a handwritten circuit diagram without using figure recognition processing. It is possible to generate and output logic circuit diagrams and their network data that comply with standards.

〔Example〕

The circuit diagram processing device according to the present invention reads and recognizes a handwritten circuit diagram created in a specified format, and generates a circuit diagram of the specified standard and its network data. A handwritten circuit diagram is created by writing the circuit country name, circuit symbol name, terminal name, node name, etc. on the handwritten circuit diagram according to certain rules. When you specify the standard of the drawing to be generated and input the above handwritten circuit diagram, the device accesses data such as circuit symbols, terminals, and node names in the drawing file that corresponds to the specified standard, and converts the circuit of that data. Generate a connection table and output the drawing of the specified standard.

The drawing data of the specified standard at that time is stored in a drawing data disk file. The network data is also generated in a separate file on the disk. If you specify a drawing output display command, the drawing can be output according to that command. Network data files are also accessed and their contents displayed as needed. Furthermore, when performing logic simulation, it is used by being connected to a simulator as is.

As described above, if you create a rough handwritten circuit drawing that describes circuit names, circuit symbol names, terminal and node names, etc., read the drawing as is, and specify the necessary drawing standards, you can use other than JIS. It is also possible to obtain circuit drawings and network data of different standards. Therefore,
The accuracy of reading and recognizing the circuits of handwritten expressions is improved, the efficiency of the creation process is improved, and drawings of specified standards can be easily created. This saves time and manpower for processing.

Next, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a block system diagram showing an embodiment of a circuit diagram processing apparatus according to the present invention. FIG. 2 is a flowchart for explaining the operation of the apparatus shown in FIG. Figure 3 shows
This is an example of an input diagram when applying the device shown in FIG.
The figure is an example of an output diagram. The table shows an example of a network table, and shows the relationship among logical symbol names, terminal symbols, locations, sizes, and addresses of graphic data. FIG. 5 is an address correspondence diagram showing addresses of graphic data, and shows the relationship between a logic circuit diagram corresponding to addresses and an arbitrary graphic.

In FIG. 1, 21 is a handwritten circuit diagram created in a prescribed form, 22 is a reading device, 23 is a computer main unit that performs predetermined processing, 24 is a floppy disk for storing programs and data, and 25 is a floppy disk that stores programs and data. This is an output device that outputs processing results. The reading device 22 automatically reads the handwritten circuit diagram 21. Further, in FIG. 1, the same or equivalent parts as in FIG. 6 are given the same reference numerals.

Next, the operation when processing a logic circuit using the apparatus shown in FIG. 1 will be explained based on FIGS. 1 to 4. Also,
The correspondence between the network list of a specific logic circuit and the graphic data is shown in the table and FIG. 5.

First, a handwritten logic circuit diagram is created according to a prescribed format (step 50). At this time, a logic diagram, input/output terminal names, node symbol names, etc. are written in the figure. You can also specify the placement and size as needed. For this arrangement, if a mark such as "*" and a numerical value are entered, that position becomes the designated point for the arrangement of logical symbols. If nothing is specified,
The placement and size are automatically set within the program according to the overall placement balance. If you want to specify the size of a logical symbol externally, you can specify the desired size by entering a numerical value, and the corresponding size will be used.

The handwritten logic circuit diagram 21 created above is read by the reading device 22.
When activated by the mouse input device 3 or key input device 4, the circuit diagram is read and the logical symbol names, input/output terminal names, internal node symbols, and position designation marks (when specified) are read. only), read disc 9 or 24
(step 51).

Next, recognition processing for the symbols of the basic logic circuit in the circuit diagram 21 is performed (step 51a). Furthermore, terminal symbols and internal node symbols are recognized (step 52).

A network table list is created based on the identified symbols. At this time, a connection relationship is constructed from input and output terminal symbols and internal node symbols corresponding to the logical symbol name. A file of relationships such as the example network table of tables is generated (step 53). Also,
The arrangement and size are also created corresponding to each logical symbol. Then, the graphic data of each standard corresponding to the logical symbol name is stored in the memory indicated by the address pointer of each graphic data (the relationship between the designated graphic data corresponding to the address at this time is as shown in Figure 5). (created as a file).

After inputting the handwritten logic circuit diagram, if you want to create only that logic circuit diagram, set the graphic output (step 54).
．． 56). If network data is to be output, it is specified and data generation processing suitable for simulation is performed (steps 54 and 55). In the case of graphic output, the standard is specified (step 56). When the required standard is processed according to the specification (step 57), the logic circuit diagram is output in the format of the specified standard (
Step 58). Note that if no standard is specified, a format of a certain standard (for example, JIS) is output as a default (step 59).

In the case of this logic circuit diagram output, the graphic data is stored in the floppy disk 24 or the auxiliary memory device W9 as the processed data. If necessary, the graphic data corresponding to the logical symbol in the address of the graphic data is accessed. Furthermore, if the size, position, etc. are specified externally, arithmetic processing is performed in accordance with the size and position.

The connection relationship between each figure is processed according to the network diagram of the table. The results can be output to the display device 7 and viewed. Further, if necessary, it is outputted as a logic circuit diagram to an output device 25 such as a printer or a profiler. The network data is also processed in a format corresponding to the simulator input data and stored on the floppy disk 24 or auxiliary memory device 9 where data and programs are stored. This stored result data is used as it is as input data for the simulator.

When outputting a drawing as a result of input processing, if there is no specification of standards, size, etc., the drawing is adjusted to a constant size and arrangement according to the position mark (*) at the time of input. Then, it is generated as a JIS standard drawing.

However, if you specify a different standard, the address where the corresponding graphic data is stored is accessed, a drawing in the specified format is output, and the size of the drawing is also processed in the specified size.

As explained above, a circuit diagram created by hand according to a specified format is automatically read as is. Then, circuit names, circuit symbols, input/output terminals, and node symbols are recognized and processed.

At this time, if the designer draws a rough figure that is easy to see and also specifies its placement, a logic circuit diagram is generated and output based on the specified position. In addition, if there is no specification, the arrangement and size will be automatically balanced and processed. By specifying the standard, formats of standards such as ISO, ANSI, and MIL can also be handled by specifying the standard.

As described above, the apparatus shown in FIG. 1 allows the designer to freely create a logic circuit diagram by hand so that it is easy for the designer to draw it, and to generate and output it as an easy-to-read graphic in the required format. In addition, the design and simulation can be made more efficient because it can be processed quickly without having to read the figure itself as in the conventional method.

In the above embodiment, a logic circuit diagram is created by hand, it is automatically input, and a logic circuit diagram of a specified standard and size and its network data are generated and output by the computer 23 as a generation means. I mentioned the case where However, in the device to which the present invention is applied, electronic circuits including transistors, diodes, and other elements are also handwritten in a prescribed format such as circuit names, element names, node terminal names, input/output terminals, etc., and input processing is performed. By doing so, you can also obtain electronic circuit diagrams and network data for those circuit diagrams. In the examples of FIGS. 3 and 4, the characters and symbols of the handwritten drawing (input drawing) and the output drawing are written inside the logical symbol, but this is not necessarily limited to the inside. Furthermore, in the handwritten circuit diagram, place marks for logic symbols with “*
”, but other symbols may also be used.Also,
If this mark is not specified, the layout size of the circuit is checked by internal processing, and the layout and size are automatically balanced and determined.

〔Effect of the invention〕

As explained above, the present invention includes a reading means for reading and processing data such as terminal names, node names, layout of circuit symbols, and sizes; a generation means for generating a circuit diagram according to a specification and network data of circuit connections in the circuit diagram in correspondence with a circuit diagram of a specified standard; and an output means for outputting the circuit diagram and network data in a specified expression format. By providing this, designers can freely create rough drawings by hand using circuit diagram standards and symbols that are easy to read and that they are familiar with, and then read them as they are and use them for JI.
Using standards such as S, ISO, etc., circuit drawings and their network data can be generated in accordance with specified standards and linked to the simulator. At this time, the layout and size of the circuits can be adjusted according to the total number of circuits to achieve a balanced output, and if you specify the placement mark and size, the specified size will be printed at the specified position. It can also be placed.

As described above, the circuit diagram processing apparatus according to the present invention can quickly create a circuit diagram in circuit design, and can also output a drawing of a different standard from the original hand-drawn drawing by designation. Simulation network data corresponding to the drawing can also be obtained in accordance with the simulator.

In addition, in circuit design, it is expected to reduce drawing creation, simulation input time, and labor savings.

[Brief explanation of drawings]

FIG. 1 is a block system diagram showing an embodiment of the circuit diagram processing device according to the present invention, FIG. 2 is a flowchart for explaining the operation of the device shown in FIG. 1, and FIGS. 3 and 4 are the same as those shown in FIG. FIG. 5 is an address correspondence diagram, FIG. 6 is a block diagram showing a conventional device, and FIG. 7 is a circuit diagram showing an example of applying the device.
The figure is a flowchart for explaining the operation of the conventional device. 3... Mouse input device, 4... Key human power device, 7.
... Display device, 9... Auxiliary memory device, 21... Circuit diagram, 22... Reading device, 23... Computer main body, 24... Floppy disk, 25... Output device. Figure 1 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] In a circuit diagram processing device that includes handwritten circuit diagrams, circuit names, circuit symbols, input/output terminals, nodes inside the circuit, arrangement, size, symbols, etc., circuit names, circuit symbol names, terminal names, node names, circuit symbols. a reading means for reading and processing data on the arrangement and size of the data; and a reading means for reading and processing data on the layout and size of Generating means for generating network data of circuit connections in a circuit diagram;
A circuit diagram processing device comprising: an output means for outputting the circuit diagram and network data in a designated representation format.