JP4703533B2 - Prototype combination calculation apparatus, program and method thereof, and CAD system including the same - Google Patents

Description

  In the present invention, in circuit design at a stage where commercialization / planning has not been decided (for example, research and development stage, etc.), when a plurality of variations of circuits are collectively expressed by a mounting condition expression, parts, connections, etc. that can be taken The present invention relates to an apparatus for calculating a combination of circuit elements.

  In recent years, with the spread of CAD (Computer Aided Design), it has become common for circuit designs and board designs to be made by CAD devices. In addition, PDM (Product Data Management) that centralizes and manages information related to design / development to effectively use data and improve the efficiency of design work has been generally used.

  Under such a technical situation, even in the research and development stage, engineers draw all parts with the circuit design CAD system and install the parts that are arranged in the PDM, which is a function provided in the PDM. And can be expressed in a tabular format.

  When integrating multiple variations of circuits on a single circuit diagram, information on the components that are mounted or not mounted according to the variations can be obtained by using the component attribute screen in the CAD drawing or the component table tool. Need to be set. The part attribute screen in the CAD drawing is a screen for inputting part attributes, and is displayed, for example, by performing a predetermined operation on the part at the time of model editing. At the time of displaying the component attribute screen, the designer inputs the presence / absence of component mounting for each circuit variation, and the circuit design CAD system receives and records this input. Information on the presence / absence of component mounting for each recorded variation can be referred to by the designer at any time. On the other hand, in the parts table, in addition to using the attribute of the part as a field, each variation is also a field, and the presence / absence of component mounting in each variation is recorded in the field. In FIG. 13, “◯” indicates that the component is mounted in the variation, and “X” indicates that the component is not mounted in the variation. The designer inputs values to each variation in the BOM while assuming “virtual variations”.

Therefore, it is necessary for the designer to prepare “virtual variation” and prepare in advance information on components to be mounted with variations within the assumed range. According to this “virtual variation”, information such as components to be mounted is extracted from the circuit information and checked and evaluated. For example, for each variation, a component attribute or a component table in a CAD drawing is referred to, and if necessary, a circuit is created and checked and evaluated. If a circuit is created on a circuit design CAD system, a simulation can be executed. Of course, the designer can directly create and evaluate a prototype by referring to the component attribute or the component table in the CAD drawing. If it is only confirmation of a variation, it can also carry out with reference to the component attribute in a CAD drawing, or a parts table.
There is no prior art document information related to the essential part of the present invention, and the following prior art document information is given as an example of a CAD system for circuit design.
JP 2005-189930 A JP-A-8-137828

  In the R & D stage and the design stage of electrical circuit design, in order to reduce design man-hours, a plurality of variations of circuit diagrams are often not described in units of variations but are collectively described in one or several circuits. Normally, component mounting information is input to each component attribute as described above while creating a circuit diagram that is a logical sum of circuit diagrams of a plurality of variations, so that a completed CAD drawing is difficult to understand. Although the designer who created the CAD drawing is still good, it is more difficult to understand for other designers who have not created the CAD drawing. Therefore, since combinations of parts that do not actually occur are also expressed in a single circuit, a CAD drawing in an inconsistent state that is not consistent, such as overlapping parts with the same name in some cases, is created. .

  In such a circuit diagram, in order to obtain circuit information of one variation, it is necessary to identify circuit elements such as components and connections that are mounted or not mounted on the variation. However, there is no information to identify at the research and development stage where the product plan or the like is not clearly determined, and a method for identifying and evaluating the circuit according to the past product plan results is usually used. In addition, it is possible to identify and verify the circuit according to the combination of components (virtual variation) assumed by the designer while considering whether or not the component is mounted while referring to the component attributes of the circuit diagram. Depending on the number, there are countless variations and it is not realistic.

In addition, it is necessary to set one component for each virtual variation in the BOM tool to determine which component / connection is to be mounted or not mounted for the assumed component combination (virtual variation). Mistakes such as setting omissions and errors were likely to occur.
In product planning, information about circuits created at the research and development stage can be obtained only for each virtual variation set by the designer, and sufficient information for commercialization studies cannot be obtained.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a prototype combination calculation system that generates a prototype pattern that satisfies conditions set for each element by a designer.

  In a circuit diagram that summarizes variations of multiple circuits, a prototype pattern that the circuit diagram can adopt by accepting mounting conditions from the user for circuit elements such as components and connections that are mounted or not mounted Calculation, display of circuit elements that switch for each prototype pattern in tabular format, display or print circuit diagram for each prototype pattern from the aggregated circuit diagram, component cost, weight, solder amount, power consumption, etc. for each prototype pattern In addition to circuit simulation and prototyping in combinations that can be taken, such as tabulation and component procurement (inventory / supply volume) confirmation for each prototype pattern, we will provide materials for consideration in product planning.

  FIG. 1 is a conceptual diagram of the present invention. FIG. 1A circuit diagram, FIG. 1B condition element table, FIG. 1C extracted condition term, FIG. 1D condition term combination evaluation result table, FIG. 1E target element table & circuit Processing is performed in the order shown in the figure.

  If there is a circuit diagram with a circuit element for which the mounting conditions of FIG. 1A are set, the mounting conditions are extracted from the circuit elements and the table of FIG. 1B is created in which the circuit elements are associated with the mounting conditions. To do. Conditional terms are extracted from the mounting conditions of the table so as not to overlap with each other, and FIG. Conditional terms in which the combinations of the truth values of the conditional terms in FIG. 1C are created and assigned to all the mounting conditional expressions for each combination, and the solutions of all the mounting conditional expressions are the same. A combination of one conditional term is selected as a prototype pattern, and a truth value combination of conditional terms whose solutions are not the same is also a prototype pattern (see FIG. 1D). The solid line in the table in FIG. 1D is a combination of truth values of conditional terms in which the solutions of all the mounting conditional expressions are the same. Fig. 1 (e-11) shows a table in which the truth value of the conditional term used as the prototype pattern is substituted into the circuit element mounting condition, and the line that becomes true has no fill and the line that becomes false has a fill. , (E-12), (e-13), (e-14) and (e-15). Each corresponds to pattern 1, pattern 2, pattern 3, pattern 4, and pattern 5, which are prototype patterns. Assuming that circuit elements without mounting conditions are always arranged, the circuit elements for which mounting conditions are set are shown in FIGS. 1 (e-11), (e-12), (e-13), (e-14) and (e-14). The circuit diagrams arranged according to e-15) are shown in FIGS. 1 (e-21), (e-22), (e-23), (e-24) and (e-25), respectively.

  According to the present invention, it is possible to generate a plurality of circuits from CAD data of a circuit in which circuit elements to which mounting conditions are assigned are arranged in this way. Similarly, a bill of materials can be generated.

(1)
The prototype combination calculation apparatus according to the present invention is extracted from a condition element extraction unit that extracts mounting conditions, which are conditions for whether or not to mount circuit elements constituting a circuit, on the circuit, and a condition element extraction unit. A condition term extraction unit that extracts condition terms without duplication from the mounting conditions for each circuit element, a condition term combination creation processing unit that creates a combination of truth values of the condition terms extracted by the condition term extraction unit, and a condition The combination of the truth values of the condition terms created by the condition term combination creation processing unit is substituted for the mounting conditions for each circuit element extracted by the element extraction unit, and each truth value combination of the condition terms is used as a prototype pattern for each circuit element. And a mounting pattern determination unit for each prototype pattern for determining the presence or absence of mounting.

  The circuit design data is circuit design data, and includes various data used by the system used in the circuit design in addition to the circuit design CAD data described in the embodiment described later. Circuit design is possible even with devices installed with paint software, spreadsheet software or drawing software drawing tools, Microsoft (registered trademark) Office Visio (registered trademark), etc. For circuit design data designed with these devices It will be apparent to those skilled in the art that the present invention can be applied.

  The mounting condition is recorded in association with the circuit element, and the input of the mounting condition from the user is performed by specifying the circuit element. For example, after the user operates the circuit design CAD system to place a component, the user inputs a mounting condition on the component attribute screen of the component.

  As described above, in the present invention, the mounting conditions associated with the circuit elements are extracted from the circuit design data, the condition terms are extracted from the extracted mounting conditions without duplication, and a combination of the truth values of the extracted condition terms is created. Then, substitute the created truth value combination of the condition term into the mounting condition for each circuit element, and determine whether or not the circuit element is implemented for each prototype pattern specified by the truth value combination of the condition term. There is an effect that a prototype pattern in which circuit elements are specified can be automatically generated.

  In the embodiment to be described later, a circuit element identification number, a name, a mounting condition, a prototype 1, a prototype 2, a prototype 3, a prototype 4, and a prototype 5 having a field as a prototype pattern mounted circuit element table is determined for each prototype pattern. Created by processing. The circuit pattern table for each prototype pattern can be output to the display screen of the display device.

(2) Redundant circuit generation prevention The prototype combination calculation apparatus according to the present invention extracts a conditional expression without duplication from the mounting conditions for each circuit element extracted from the conditional element extraction part as necessary. And the conditional expression truth value combination created by the conditional term combination creation processing section to the conditional expression extracted by the conditional expression extraction section, and the permutation of the evaluation result of the conditional expression for each truth value combination of the conditional term If the condition expression evaluation processing unit for each condition term combination and the permutation of the evaluation result of the conditional expression are duplicated, and if the permutation of the evaluation result of the conditional expression is duplicated, the evaluation result of the duplicate conditional expression A condition related to the permutation of the evaluation results when the truth value of the conditional term related to the permutation of one evaluation result is a prototype pattern from among the combinations of truth values of the conditional terms related to the permutation, and the permutations of the evaluation results of the conditional expressions do not overlap The combination of the truth values of the terms An evaluation result acquisition unit as a turn is newly included, and the implementation determination unit for each prototype pattern determines whether or not each circuit element for each prototype pattern from the evaluation result acquisition unit is mounted.

  As described above, in the present invention, a conditional expression is extracted without duplication from the mounting conditions for each circuit element, and a combination of the truth values of the conditional terms created by the conditional term combination creation processing unit is substituted for the extracted conditional expressions. Then, the permutation of the evaluation result of the conditional expression is obtained for each combination of the truth values of the conditional expression, and if the permutation of the evaluation result of the conditional expression is duplicated, one condition out of the combination of the truth values of the conditional term that becomes the same permutation The combination of the truth values of the terms is a prototype pattern, and when the permutations of the evaluation results of the conditional expressions are not duplicated, the combination of the truth values of the conditional terms related to the permutations of the evaluation results of the conditional expressions that are not duplicated is the prototype pattern, and is implemented for each prototype pattern Since the judgment unit determines whether or not each circuit element is mounted for each prototype pattern, the combination of conditional values with overlapping permutations of the evaluation results of the conditional expressions is excluded from the prototype pattern, and the circuit elements to be mounted It has the effect that it is possible to prevent generating a combination of the same. Specifically, it is possible to prevent a circuit having the same circuit element from being mounted.

In the embodiment described later, the evaluation result acquisition unit is illustrated as an evaluation result line acquisition unit. This is because the embodiment is illustrated with a configuration using a table. Even if a table is not used, it can be implemented by using an array variable, a plurality of variables, or a structure as will be apparent to those skilled in the art.
In (1), the conditional term extraction unit extracts the conditional term without duplication from the mounting conditions for each circuit element extracted from the conditional element extraction unit. Instead, the conditional expression extracted from the conditional expression extraction unit The condition terms may be extracted without overlapping.

(3) Designation of circuits not to be generated The prototype combination calculation apparatus according to the present invention can specify a conditional term designated by the user from among the combinations of truth values of the conditional terms created by the conditional term combination creation processing unit. A conditional term combination exclusion unit that deletes a combination of truth values is newly included.

  As described above, in the present invention, the truth value combination of the conditional term specified by the user is deleted from the truth value combination of the conditional term, so the truth value combination of the deleted conditional term is used as a prototype pattern. Subsequent processing is not executed, unnecessary processing can be avoided, and the circuit not required by the user is not output.

    The prototype combination calculation device according to the present invention is designated by the user from the permutation of the evaluation results of the conditional expressions for each combination of the conditional values obtained by the conditional expression evaluation processing unit for each conditional expression combination as necessary. An evaluation result permutation excluding unit for deleting a permutation of evaluation results of conditional expressions for each combination of truth values of the conditional terms is newly included.

  The evaluation result permutation exclusion unit evaluates the conditional expression of the combination of the conditional terms obtained by the conditional expression evaluation processing unit for each conditional term combination, not the truth combination of the conditional terms created by the conditional term combination creation processing unit. Processing permutation of results.

  The prototype combination calculation device according to the present invention is a condition for deleting the combination of the truth values of the conditional terms specified by the user from the truth value combinations of the conditional terms as the prototype pattern by the evaluation result acquisition unit as necessary. A new item combination exclusion unit is included.

  The conditional term combination excluding unit processes not the combination of the truth values of the conditional terms created by the conditional term combination creation processing unit, but the truth value combination of the conditional terms as the prototype pattern by the evaluation result acquisition unit.

(4) Circuit diagram creation The prototype combination calculation apparatus according to the present invention is a circuit diagram composed of circuit elements mounted according to whether or not each circuit element for each prototype pattern obtained by the prototype pattern mounting determination unit is mounted as necessary. Is to create.

(5) Creation of parts list The prototype combination calculation apparatus according to the present invention is a parts list composed of circuit elements that are mounted according to whether or not each circuit element for each prototype pattern obtained by the prototype pattern mounting determination unit is mounted as necessary. Is to create.

(6) Circuit generation within specified conditions The prototype combination calculation apparatus according to the present invention includes means for receiving, from the user, a condition term condition that is a condition for the condition term extracted by the condition term extraction unit, as necessary. A condition term combination creation processing unit that is newly included creates a combination of truth values of condition terms that satisfy the condition term accepted from the user.

  As described above, in the present invention, the conditional term combination creation processing unit does not create the truth value combination of the conditional terms using all the conditional terms extracted by the conditional term extraction unit, but accepts the conditions received from the user. Since the combination of the conditional terms truth value is created while satisfying the term conditions, the subsequent processing is performed with the goal of the circuit required by the user, avoiding unnecessary processing due to generation of unnecessary circuits, This also has the effect that the user does not need to receive an unnecessary circuit output.

Although the inventions (1) to (6) have been described as devices, they are obvious to those skilled in the art and can be understood as methods and programs as described in the embodiments described later. it can.
These outlines of the invention do not enumerate the features essential to the present invention, and a sub-combination of these features can also be an invention.

  Based on the determination result, a circuit element for each prototype pattern can be specified from a circuit element table such as a parts table of the entire circuit diagram, and a parts table or the like can be generated. Based on the part number in the parts table, information is extracted from a DB or the like that stores the cost, weight, mounting area, solder amount, etc. of each part, and is used as a material for prior evaluation. Further, by extracting the power consumption of the LSI / IC mounted for each prototype pattern from the same component information management DB and totalizing it, it is possible to predict the power consumption for each prototype pattern. Furthermore, early procurement preparations can be made by evaluating the component parts table for each prototype pattern using a purchasing system, a production management system, or the like.

  In addition, it is possible to automatically generate a circuit diagram for each prototype pattern based on the circuit element table obtained from the judgment results, and combinations of elements that can actually occur in pre-trial evaluation (design verification, simulation, etc.) Can be designed in consideration of

  Embodiments of the present invention will be described in detail with reference to the drawings. The present invention can be implemented in many different forms. Therefore, it should not be interpreted only by the description of this embodiment. Also, the same reference numerals are given to the same elements throughout the present embodiment.

  In the present embodiment, the system will be mainly described. However, as will be apparent to those skilled in the art, the present invention can also be implemented as a program and method usable in a computer. In addition, the present invention can be implemented in hardware, software, or software and hardware embodiments. The program can be recorded on any computer-readable medium such as a hard disk, CD-ROM, DVD-ROM, optical storage device, or magnetic storage device. Furthermore, the program can be recorded on another computer via a network.

(First embodiment of the present invention)
[1. Configuration of prototype combination calculation function]
FIG. 2 is a block diagram of the prototype combination calculation function according to the present embodiment.
The trial combination calculation function includes a condition extraction process, a trial pattern calculation process, and an element determination process for each trial pattern. The condition extraction process is realized by the condition element extraction unit 31, the conditional expression extraction unit 32, and the condition term extraction unit 33. The trial pattern calculation processing is realized by the conditional term combination creation processing unit 41, the conditional expression combination conditional expression evaluation processing unit 42, the evaluation result row acquisition unit 43, and the conditional term combination exclusion unit 44. The element determination processing for each prototype pattern is realized by the mounting determination unit 51 for each prototype pattern.

[1.1 Condition setting for circuit diagram]
In a circuit design CAD or the like, for a circuit element such as a block, component, terminal, or signal line, a designer inputs conditions for mounting the circuit element as attribute information. It is desirable to provide the mounting condition attribute information as an attribute of one circuit design data. The mounting conditional expression is displayed on the circuit drawing in association with the circuit element. Alternatively, the mounting conditional expression is not displayed on the circuit drawing, but is recorded as attribute information (see FIG. 3) displayed on the property window or the like. <1> In other words, the input mounting condition expression is recorded in association with the corresponding circuit element.

[1.2 Condition extraction]
The condition element extraction unit 31 extracts circuit elements from the circuit design data (CAD data or the like), and creates a list of circuit elements for which mounting conditions are specified in a condition element table. At this time, the mounting condition set in the upper circuit element is the AND condition of the lower circuit element. That is, the mounting condition of the lower circuit element is a logical product of the mounting condition set for the lower circuit element and the mounting condition set for the upper circuit element. For example, a mounting condition set for a component is ANDed with a mounting condition set for a terminal of the component.

The conditional expression extraction unit 32 sets an overlapping mounting conditional expression in the conditional element table as one mounting conditional expression. In the above condition element table, the same mounting conditional expressions are not necessary in the trial combination calculation process, and are arranged as a conditional expression table excluding duplicates. <2>
The conditional term extraction unit 33 converts the conditional terms used in the mounting conditional expression from the organized conditional expression table into delimiters such as “and”, “or”, “+”, “;”, and blanks (logical A condition term table is created by separating and extracting by operators). At this time, overlapping condition items are collected as one.

[1.3 Prototype pattern calculation]
The conditional term combination creation processing unit 41 creates a conditional term combination table <3> indicating all combinations in which each conditional term in the above-described conditional term table is On / Off, and applies it to the mounting conditional expression of <2>. To do. The conditional expression evaluation processing unit 42 for each conditional term combination sets the result of evaluating this mounting conditional expression with On / Off (truth value) in the conditional term combination table. <4> In other words, the result of processing by the 2-value theory with the mounting conditional expression as a proposition is set in the conditional term combination table.

When there is a restriction on the combination of the condition terms, the condition term combination exclusion unit 44 excludes the combination according to the restriction of the condition terms when creating the <3> condition term combination table. Further, when there are restrictions on the mounting conditions of components and the like, combinations that do not meet the restrictions are omitted from the result of <4>. <5>
The evaluation result line acquisition unit 43 searches the condition item combination table of <4> (or <5>) for patterns with overlapping evaluation results, and excludes one of the overlapping patterns from the trial combination. . As a result, the remaining pattern is displayed and printed as a trial pattern that requires trial production and simulation.

[1.4 Confirmation of information for each prototype pattern]
The mounting determination unit 51 for each prototype pattern specifies the On / Off combination of the conditional term for calculating the prototype pattern in order to specifically output the circuit of one prototype pattern among the plurality of prototype patterns. By applying to each mounting condition formula of the circuit, the presence or absence of circuit element mounting of the prototype pattern is determined.

[1.5 Data output]
The circuit diagram creation unit 61 displays and prints a prototype circuit diagram showing circuit elements to be mounted on the prototype pattern. The parts table creation unit 62 can also display and print a list of parts to be mounted (or not mounted) on the prototype pattern by applying them to the conditional expressions in the same manner. Note that the user can refer to the data contents of the various tables as required.

[2. Hardware configuration]
FIG. 4 is a hardware configuration diagram of a computer in which the CAD system according to the present embodiment is constructed. In the present embodiment, the prototype combination calculation function is described as one of the functions provided in the CAD system. As will be apparent to those skilled in the art, it can also be implemented as a prototype combination calculation system separate from the CAD system. In the case of such a prototype combination calculation system, for example, it can be realized as a cooperative system that operates by receiving necessary data from a CAD system and returns processed data to the CAD system, and even if the CAD system is not activated, the circuit can be realized. It can also be realized as an independent system in which design data (CAD data or the like) is read from the storage device and processed, and the processed data is recorded in the storage device. For example, the data before processing is the CAD data of the circuit in which the mounting conditions are embedded, the data after processing is the CAD data of the circuit of the prototype pattern, and the CAD data for the number of prototype patterns is read by reading one CAD data. Output. However, it is also possible to embed circuit data of the prototype pattern in the data before processing, for example, using the so-called layer function, preparing layers such as prototype 1, prototype 2,. Pattern circuits can also be formed.

  A computer in which a CAD system is constructed is connected to a CPU (Central Processing Unit) 11, a main memory 12 such as a DRAM (Dynamic Random Access Memory), a ROM 13, an HD (hard disk) 14 as an external storage device, and a network. LAN card 15 as an expansion card, mouse 16 and keyboard 17 as input devices, video card 18 having a screen display function, sound card 19 having an audio input / output function, display 20 and speaker 21 as an output device, CD- It comprises a CD-ROM drive 22 for reading data from the ROM.

  A CAD system is constructed on a computer by performing a so-called installation in which a CAD program recorded on an external storage medium such as a CD-ROM is copied to the computer's HD, and the CAD program can be read and executed. Will be. Even when implemented as a prototype combination calculation system, the prototype combination system is constructed on the computer by installing the prototype combination calculation program.

[3. Operation]
Here, the flow of processing will be described by taking a circuit design of a CD / MD radio cassette as an example. In order to simplify the description, a circuit as shown in FIG. 5 is assumed. Even before the commercialization is decided, the presence of CD / MD functions and distribution in Japan and overseas are assumed. For example, the mounting conditions are given such that the circuit block (MD) is only a product with MD function, and the DISP component is only a product with MD or CD function. For convenience of explanation, in FIG. 5 it is clearly indicated by a balloon, but other display methods such as display on the component attribute screen can be applied, and further display is not necessary.
If a parts list is extracted from the entire circuit diagram data and additional information is added using the part number as a key, a parts table of all 11 parts shown in FIG. 6 can be created.

  A trial combination is calculated from the above circuit data. The operation flowchart is as shown in FIG. First, the operation using this figure will be described, and then each process will be described in detail.

  This operation includes a condition extraction process (S200), a prototype pattern calculation process (S300), and an element determination process for each prototype pattern (S400).

  The designer who has used the CAD system instructs the prototype combination calculation function using the input device. For example, it can be instructed by selecting “prototype combination calculation function” of “tool” on the menu bar using the mouse 16.

The computer prompts specification of the circuit, and the designer instructs the target circuit using the input device. It is also possible to employ a configuration in which processing is performed for a circuit that is currently being edited even if no circuit is specified.
The computer reads circuit design data of the instructed target circuit from the HD 14 that is a storage device (S101).

The condition extraction process (S200) includes the following S201 to S221.
The condition element extraction unit 31 extracts circuit element mounting conditions from the CAD data, and stores the extracted circuit element mounting conditions in the condition element table (S201). FIG. 8A shows an example of the condition element table, which includes fields for condition element identification numbers, circuit element types, and circuit element names in addition to the mounting conditions.

  The conditional expression extraction unit 32 stores the mounting conditions of the circuit elements stored in the conditional element table in the conditional expression table with the mounting conditions of the overlapping circuit elements as one (S211). FIG. 8B shows an example of a conditional expression table, which includes conditional expression identification symbols and mounting condition fields.

The conditional term extraction unit 33 is stored in the conditional expression table, extracts the conditional term from the mounting conditional expression composed of the conditional term and the operator, and stores it in the conditional term table (S221). Duplicate conditional terms are stored in the conditional term table. FIG. 8C shows an example of a conditional term table, which has a conditional term identification symbol and a conditional term field.
The trial pattern calculation process (S300) includes the following steps S301 to S334.

  The conditional term combination creation processing unit 41 can take the values of all the conditional terms stored in the conditional term table, assuming that the conditional term stored in the conditional term table takes a truth value of 0 or 1. A combination is obtained and stored in the condition item combination table (S301). FIG. 9A is an example of a conditional term combination table, in which the field is a conditional term stored in the conditional term table, and the value that the conditional term can take is 0 or 1. Therefore, the condition item combination table shows combinations of values of all condition items in the field.

The condition term combination exclusion unit 44 accepts an instruction of a constraint condition related to condition term combination exclusion. Note that this restriction condition instruction reception can be performed simultaneously with the instruction reception of the target circuit, for example, before S311.
The conditional term combination exclusion unit 44 determines whether there is a constraint condition related to the conditional term combination exclusion (S311).

  If it is determined that there is a constraint condition, the condition term combination exclusion unit 44 excludes the combination of the value of the condition term in the condition term combination table or the condition term combination evaluation result table indicated by the constraint condition related to the condition term combination exclusion ( S312). If there is no constraint condition, S312 is not processed and the process proceeds to the next process.

  The conditional expression evaluation processing unit 42 for each conditional term combination substitutes a combination of the values of the conditional terms in the conditional term combination table for each of the mounting conditions in the conditional expression table, obtains an evaluation result, and stores it in the conditional term combination evaluation result table. (S321). In the condition term combination evaluation result table of FIG. 9B, in addition to the fields of the condition term combination table, each mounting condition and evaluation result are fielded. An evaluation result of the condition item combination which is a permutation obtained by connecting the evaluation result of the mounting condition of the conditional expression table to each combination of the value of the condition term in the condition item combination table is obtained.

The evaluation result row acquisition unit 43 acquires the evaluation result of the conditional item combination that is a permutation obtained by connecting the evaluation results of the mounting conditions stored in the conditional item combination evaluation result table (S331).
The evaluation result row acquisition unit 43 compares the acquired evaluation result of the conditional term combination with the already acquired evaluation result of the conditional term combination, and determines whether or not they are the same (S332).

If the evaluation results of the conditional term combinations acquired in S332 are the same, the process returns to S331.
If the evaluation results of the conditional term combinations acquired in S332 are not the same, the evaluation result line acquisition unit 43 registers the conditional term combinations in the trial pattern table as a trial pattern (S333). FIG. 9C shows an example of a prototype pattern table, which includes fields for identification information of prototype patterns, condition items, and the number of similar conditions. In other words, the trial pattern table is a table formed by selecting trial patterns from trial pattern candidates in the conditional term combination table.

The evaluation result row acquisition unit 43 determines whether or not all the evaluation results of the conditional term combinations have been acquired (S334).
If it is determined in S334 that all the evaluation results for the condition item combinations have not been acquired, the process returns to S331.
If it is determined in S334 that all the evaluation results of the condition term combinations have been acquired, the process proceeds to element determination processing for each prototype pattern (S400) consisting of the next S401.

  The mounting determination unit 51 for each prototype pattern determines whether or not a circuit element according to the mounting condition is mounted from the mounting condition values in correspondence between all mounting conditions in the condition element table and the prototype pattern in the prototype pattern table, and prototypes the value. Each pattern is stored in the mounted circuit element table (S401). FIG. 10A shows a mounting circuit element table for each prototype pattern, which includes fields of identification number, circuit element type, circuit element name, mounting condition, and prototype pattern identification information. It can be seen that the field of the identification information of the prototype pattern is added to the condition element table.

  A circuit diagram for each prototype pattern is created by identifying the circuit elements to be mounted for each prototype pattern based on the mounting determination result and creating a circuit diagram consisting of the specified circuit elements and circuit elements for which no mounting conditions are set. Is created (S501).

Based on the mounting judgment result, the circuit elements mounted for each prototype pattern are identified, and the parts table for each prototype pattern is created by creating a parts table consisting of the specified circuit elements and circuit elements for which no mounting conditions are set. Is created (S502).
The operation has been described with reference to the operation flowchart of FIG. 7, but will be described in detail for each process.

  Note that the constituent elements of the block configuration of the prototype combination calculation function have been described as the subject of operation so far, but this is an example of the block configuration in the present embodiment. This is apparent from the fact that the specific mounting configuration varies depending on each person skilled in the art. Then, if the operation subject is given from the viewpoint of hardware, the computer that constructs the system and its processor are applicable.

[3.1 Condition extraction process]
[3.1.1 Condition element extraction]
The condition element extraction unit 31 extracts circuit element information such as parts and connections from the circuit design data, and forms a table of circuit element attribute information that is not blank. As information acquisition methods from actual CAD data, there are a method using an IF (an interface such as an API (Application Programming Interface)) possessed as a CAD function and a method using a parts table tool or the like. From the circuit data of FIG. 5, as shown in FIG. 8A, the circuit elements are stored in the condition element table. Here, the mounting condition set on the circuit diagram data for the component “Rec” whose number is “7”, which is a field in the condition element table, is “CD or domestic”. On the other hand, the “MD” condition is set for the block circuit (partial circuit) of “MD” including the component “Rec”, and the condition of the component “Rec” is “MD and (CD or domestic)”. This is because the relationship between the block “MD” and the component “Rec” is the relationship between the upper circuit element and the lower circuit element described above.

[3.1.2 Conditional expression extraction]
When the conditional expression extraction unit 32 acquires the conditional expression from the “condition” column of the conditional element table and stores only the conditional expressions that do not overlap in the conditional expression table, the conditional expression table of FIG. 8B is obtained. For example, since condition elements number 1 and number 4 are both “MD or CD”, the conditional expressions are collected into symbol A.

[3.1.3 Condition term extraction]
The conditional term extraction unit 33 reads the conditional expression from the “condition” column of the conditional expression table, separates the conditional expression using the operators (or, &, Not, and parentheses) used here as delimiters. As shown in FIG. 8C, the conditional terms are “MD”, “CD”, and “domestic” conditional terms. It can be seen that circuit variations are separated from these conditional terms.

[3.2 Prototype pattern calculation processing]
[3.2.1 Condition Item Combination Creation Processing]
The conditional term combination creation processing unit 41 takes the conditional terms stored in FIG. 8C according to the above procedure in a column, and all the combinations in which each conditional term becomes 0 or 1 are as shown in FIG. 9A. Create as a (pattern) table. Note that “0” and “1”, which can be taken by each conditional term, represent “False” and “True”, respectively. Here, if the number of condition terms is N, the number of rows in the table is 2 to the Nth power.

[3.2.2 Conditional expression evaluation process for each conditional term combination]
The conditional expression evaluation processing unit 42 for each conditional term combination substitutes the value of the conditional term for each conditional term combination pattern shown in FIG. 9A into each conditional expression in the conditional expression table created in FIG. Evaluate (calculate). The calculation result is “0” or “1”. For example, in the case of “condition A” as the mounting condition, “MD or CD = 0 or 0 = 0” is obtained when the combination number is “1” as the condition item combination pattern, and “MD” is obtained when the combination number is “2”. or CD = 1 or 0 = 1 ”to obtain an evaluation (calculation) result. Depending on the calculation method of the other calculation formulas instead of the logical calculation, a result of “2” or more can be obtained (when the conditional expression is given as “A + B”), but in this case, it is determined as “1”. The results of connecting the evaluation (calculation) results for each mounting conditional expression and storing them in the table as character strings or numerical values are as shown in the conditional item combination evaluation result table shown in FIG.

[3.2.3 Evaluation result line acquisition-prototype pattern registration]
The evaluation result row acquisition unit 43 extracts only the rows in which the connected evaluation results do not overlap from the conditional term combination evaluation result table, and stores the values of the conditional terms as the prototype pattern table of FIG. 9C. For example, combination numbers 6 and 8 are collected as prototype 5 because of the same connected evaluation result.

[3.2.4 Conditional item combination exclusion]
Here, a radio cassette that does not have a CD or MD can be used as a prototype pattern. When it is clear from the product plan that either CD or MD is mounted, combination number 1 and combination number 5 in FIG. 9B can be excluded. As a result, prototype 1 can be excluded as a prototype pattern.

  The extracted prototype pattern is information for comprehensively examining combinations of circuit elements, and does not mean that a domestic product can take only one pattern as illustrated. For example, by using another pattern as a pattern to be excluded in the process of de-duplicating evaluation results, the pattern can be divided into three domestic patterns and two overseas patterns. For this reason, when considering a product plan etc. based on a trial pattern table, it is possible to adopt a configuration in which condition term combinations with the same evaluation results in FIG. 9B are extracted and displayed together. For example, in the case of prototype 3, combination number 3 and combination number 7 are displayed.

[3.3 Element determination processing for each prototype pattern]
[3.3.1 Mounting determination for each prototype pattern]
The implementation determination unit 51 for each prototype pattern determines an actual circuit element for each prototype pattern based on the prototype pattern table (FIG. 9C) created by the above procedure. In this case, first, a prototype circuit mounted circuit element table in which a determination column for each prototype pattern is added to the condition element table created in FIG. In FIG. 10A, the trial pattern of the trial pattern table of FIG. 8C is added as a column. The mounting of the circuit element is determined by acquiring the value of the condition term for each prototype pattern from the prototype pattern table of FIG. 9C and evaluating (calculating) the mounting conditional expression.

For example, when determining the part name “Disp” for “Prototype 2”, in Prototype 2 of FIG. 9C, only the conditional term “MD” is “1” and the other conditional terms are “0”. It has become. When this is evaluated (calculated) by the conditional expression “MD or CD” of the component “Disp”, “MD or CD = 1 or 0 = 1” is obtained, and the result of “1” is obtained. Judgment of mounting (○) can be made.
By repeating this determination for each conditional element, a mounting circuit element table for each prototype pattern, which is a mounting determination result table as shown in FIG. 10A, is obtained.

[3.4 Output]
Based on the determination result, a circuit element for each prototype pattern is specified from a circuit element table such as a parts table of the entire circuit diagram, and a parts table or the like including the specified circuit elements is generated. Based on the part number in the parts table, information is extracted from a DB that stores the cost, weight, mounting area, solder amount, etc. of each part, and is used as a material for prior evaluation. Further, by extracting the power consumption of the LSI / IC mounted for each prototype pattern from the same component information management DB and summing up, it is possible to predict the power consumption for each pattern. Since it is possible to perform evaluation using a system that executes various evaluation processes that are already used by those skilled in the art if the CAD data for the design circuit that designed the circuit is included, details will not be described. However, in the conventional evaluation system, the user evaluates only one circuit, and does not handle a variation of the circuit generated by the present invention.

  For example, in the pattern of prototype 2, the connection “X01-E10” and the component “Rec” are not mounted, resulting in a circuit diagram as shown in FIG. The component list is as shown in FIG. In FIG. 10C, “No”, “Part name”, “Part number”, “Power consumption”, “Area”, “Weight”, “Solder amount”, and “Unit price” are shown as fields in this parts table. However, “Inventory” and “Supply” can be added and displayed.

[3.4.1 Circuit diagram output]
In the present embodiment, since the circuit diagram has already been created using the circuit design CAD system, the circuit diagram creation unit 61 identifies the circuit elements to be mounted for each prototype pattern, and identifies the specified circuit elements and mounting conditions. A circuit diagram for each prototype pattern can be created by creating a circuit diagram composed of circuit elements for which is not set. Here, description is made on the assumption that circuit elements for which no mounting condition is set are always elements constituting the circuit. Therefore, when processing is performed on the premise that a circuit for which no mounting condition is set is always used without configuring a circuit, the circuit element does not appear on the circuit diagram.

[3.4.2 Parts list output]
The parts table creation unit 62 identifies the circuit elements to be mounted for each prototype pattern, and creates a parts table composed of the identified circuit elements and circuit elements for which no mounting condition is set, thereby creating a parts table for each prototype pattern. Can be created. Various information of the circuit element is acquired and added as a field of a parts table for each prototype pattern, and the total of field values of the circuit elements of the prototype pattern can be obtained to obtain the characteristics of the field of the entire circuit. The power consumption, area, weight, amount of solder, unit price, etc. for each prototype pattern described above are applicable. By grasping the circuit characteristics for each prototype pattern, the user can not only smoothly develop and design, but also easily obtain excellent information that determines the commercialization at the time of product planning.

[3.4.3 Table output]
In this embodiment, a condition element table, a condition expression table, a condition term table, a condition term combination table, a condition term combination evaluation result table, a prototype pattern table, and a prototype circuit mounted circuit element table are used. It can also be configured to output to the user.

(Other embodiments)
[Simpler operation]
FIG. 11 shows a simpler operation of the prototype combination calculation function of the first embodiment.
Up to S201, the operation is the same as that of the first embodiment.
After extracting the conditional elements, the conditional terms are extracted without being duplicated without being extracted, and stored in the conditional term table (S222).
S301 to S502 are also the same as the operations of the first embodiment.

  The difference from the operation of the first embodiment is that all the combinations of conditional terms stored in the pattern table are processed as prototype patterns without going through the conditional term combination exclusion processing and conditional term combination conditional expression evaluation processing. In addition, the presence / absence of mounting of circuit elements for each prototype pattern is determined somewhat redundantly, and so are the parts table and circuit diagram. Compared with this, a redundant part list and circuit diagram are not output, which is an advantage of the prototype combination calculation function of the first embodiment.

[Condition condition setting]
The conditional term is a term used in the mounting conditional expression among circuit elements arranged on the circuit diagram. Therefore, usually, a part of circuit elements arranged on the circuit diagram is a conditional term. By the way, when this condition term increases, a prototype pattern may be generated by the prototype combination calculation function. Therefore, it is desirable to accept from the user a conditional term condition that is a condition for the extracted conditional term. For example, if MD is always necessary, “MD =“ 1 ”is set,“ MD = “0” ”is set if MD is not required, and“ MD or CD = 1 ”is set if MD or CD is always required. To do. The mounting condition is a condition as to whether or not a certain circuit element is mounted. On the other hand, the condition term condition is a condition as to whether or not to mount only a condition term among circuit elements in a circuit. By doing so, the number of conditional term patterns in the conditional term combination table can be reduced, and subsequent processing such as conditional term pattern evaluation is reduced, and unnecessary prototype patterns are output to the user. It does not need to be done and is very convenient. For example, when the condition item condition “MD or CD = 1” is given, the combination numbers “1” and “5” in the condition item combination table of FIG. 9A become unnecessary.

The condition term condition is usually accepted after the condition term is obtained (for example, immediately after S221), but may be before the condition term is obtained. Even if the user sets a condition term condition for a circuit element other than the condition term, the condition term condition is only ignored.
When essential circuit elements and unnecessary circuit elements on a circuit are set on a system such as a CAD system, the settings can also be incorporated into a condition item condition.

[Output Condition Item Settings]
According to the first embodiment, it is possible to output a circuit diagram relating to a prototype pattern. Therefore, according to the present invention, it is possible to automatically output a circuit diagram of the number of prototype patterns from the circuit diagram that has been consolidated into one sheet. However, depending on mounting conditions, circuit diagrams of a large number of prototype patterns are output, and it may be difficult for the user to organize and grasp the circuit diagrams. Therefore, instead of outputting all the circuit diagrams of the prototype pattern, only the prototype pattern of the condition required by the user is output, or the prototype pattern of the condition unnecessary by the user is not output. It can also be configured to output a prototype pattern.

  Furthermore, it is possible to specify a circuit element that permits display according to the mounting conditions. This is a coexistence with the display of the conventional collective circuit diagram. How to use differs depending on the target user, and if you are in charge of product planning, you need a circuit diagram for each function that is important to the user rather than outputting a circuit diagram for each detailed circuit element implementation It may become. On the other hand, a person in charge of the commercialization stage may need a circuit diagram showing whether or not circuit elements are mounted finer than whether or not large circuit elements are mounted. Furthermore, even if the person is responsible for the same productization stage, if the module in charge is different, the module in charge requires a detailed circuit diagram for each conditional term in that module, while in the module not in charge, it is in the module. The detailed circuit diagram for each conditional term may be redundant. That is, the circuit diagram required for each user differs, and not all circuit diagrams that can be output are output, but among them, the circuit diagram desired by the user can be output.

[Circuit evaluation based on generated circuit element table for each prototype pattern or circuit diagram or parts table for each prototype pattern]
Evaluation apparatuses that perform evaluation processes such as mounting reliability, mounting cost evaluation, response characteristic evaluation, and wiring electrical characteristic evaluation on a circuit designed by a user have already been used. Since the evaluation device can be appropriately realized by a so-called person skilled in the art, details are not described here. This evaluation apparatus reads circuit CAD data, executes an evaluation process by an evaluation method designated by a user, and outputs evaluation data. In the present invention, a circuit diagram and a parts table for each prototype pattern are output from CAD data for which mounting conditions are set, and CAD data for each prototype pattern can be generated. CAD data for each prototype pattern generated by the present invention is input to the evaluation apparatus. The evaluation apparatus performs an evaluation process on each CAD data for each prototype pattern and outputs evaluation data for each prototype pattern. In the present invention, the evaluation data for each prototype pattern output by the evaluation apparatus is displayed so that the prototype patterns can be compared with each other. FIG. 12 is an evaluation data display screen according to this embodiment. FIG. 12 shows a window made up of a table having fields of prototype pattern, evaluation 2, evaluation 1, evaluation 3,..., Circuit diagram, and parts table. In this table, the trial patterns are arranged in descending order based on the field value of the current evaluation 2. It is also possible to arrange prototype patterns in descending order and ascending order based on other field values. A button is arranged in each of the circuit diagram and parts table fields, and by pressing this button, the corresponding circuit diagram and parts table are displayed in another window.

  A large number of prototype patterns automatically generated in this way are displayed together with the evaluation data based on the evaluation data, and further, a circuit diagram and a parts table of each prototype pattern can be displayed, thereby providing a highly convenient function.

  In the first embodiment, an example of a table having fields of various circuit characteristics is shown in FIG. 10C, but the bottom row shows the power consumption, area, weight, amount of solder, The unit price is shown, and the circuit characteristics are calculated by integrating the characteristics of the circuit elements that make up the prototype pattern. The circuit characteristics are calculated for each prototype pattern and displayed so that the prototype patterns can be compared with each other. It can also be. The window display is the same as in FIG.

  Although the present invention has been described with the above embodiments, the technical scope of the present invention is not limited to the scope described in the embodiments, and various modifications or improvements can be added to these embodiments. . And embodiment which added such a change or improvement is also contained in the technical scope of the present invention. This is apparent from the claims and the means for solving the problems.

The following additional notes will be given with respect to the above embodiments.
(Appendix)
(Supplementary note 1) A condition element extraction unit that extracts mounting conditions, which are conditions for determining whether or not circuit elements constituting a circuit are mounted on a circuit, and mounting for each circuit element extracted from the condition element extraction unit Extracted by a condition term extraction unit that extracts condition terms without duplication from the condition, a condition term combination creation processing unit that creates a truth value combination of the condition terms extracted by the condition term extraction unit, and a condition element extraction unit Substituting the truth value combinations of the condition terms created by the condition term combination creation processing unit for the implementation conditions for each circuit element, and determining whether each truth combination of condition terms is implemented as a prototype pattern A prototype combination calculation device including a mounting determination unit for each prototype pattern. (1, Fig. 11)

    (Appendix 2) Conditional expression extraction unit that extracts conditional expressions without duplication from the mounting conditions for each circuit element extracted from the conditional element extraction unit, and creation of conditional term combinations for the conditional expressions extracted by the conditional expression extraction unit A conditional expression evaluation processing unit for each conditional term combination that substitutes the truth value combinations of the conditional terms created by the processing unit to obtain a permutation of the evaluation results of the conditional expressions for each of the conditional value truth values combinations, and the evaluation result of the conditional expression If the permutation of the conditional expression is duplicated, and if the permutation of the evaluation result of the conditional expression is duplicated, the truth value combination of the conditional terms related to the permutation of the evaluation result of the overlapping conditional expression is A new evaluation result acquisition unit that uses the truth value of the conditional term related to the permutation as a prototype pattern, and uses the combination of the truth value of the conditional term related to the permutation of the evaluation result as the trial pattern when the permutation of the evaluation result of the conditional expression does not overlap The evaluation result acquisition department Prototype combination calculating apparatus according to the presence or absence of the circuit elements each implementation of each prototype pattern in the Appendix 1 to the prototype pattern for each mounting determination unit obtains a. (2, Fig. 7)

(Additional remark 3) The conditional term combination exclusion part which deletes the truth value combination of the conditional term designated by the user from the truth value combination of the conditional term created by the conditional term combination creation processing unit is newly included. The trial combination calculation apparatus according to 1 or 2. (3)

    (Supplementary note 4) Each combination of conditional terms obtained by the conditional expression evaluation processing unit for each conditional term combination Each truth value combination of the conditional terms specified by the user from among the permutations of the evaluation results of the respective conditional expressions The trial combination calculation apparatus according to Supplementary Note 2, further including an evaluation result permutation excluding unit that deletes a permutation of evaluation results of the conditional expression.

    (Additional remark 5) The said additional remark which newly includes the conditional term combination exclusion part which deletes the truth value combination of the conditional term designated from the user from the truth value combination of the conditional term which the evaluation result acquisition part makes a prototype pattern 2. The trial combination calculation device according to 2.

    (Additional remark 6) Prototype combination in any one of said additional remark 1 thru | or 5 which produces the circuit diagram which consists of a circuit element mounted according to the presence or absence of each circuit element for every trial pattern calculated | required in the mounting determination part for every trial pattern Calculation device. (4)

    (Supplementary note 7) The prototype combination according to any one of Supplementary notes 1 to 5, which creates a parts table composed of circuit elements mounted according to the presence or absence of each circuit element for each prototype pattern obtained by the prototype determination unit for each prototype pattern. Calculation device.

    (Additional remark 8) The condition term condition which is a condition with respect to the condition term extracted by the condition term extraction part is newly received from the user, and the condition term combination creation processing part has received the condition term condition accepted from the user. 6. The trial combination calculation device according to any one of appendices 1 to 5, which creates a combination of truth values of condition terms to be satisfied. (5)

    (Supplementary Note 9) A condition element extraction unit that extracts mounting conditions, which are conditions for determining whether or not circuit elements constituting a circuit are mounted on the circuit, and mounting for each circuit element extracted from the condition element extraction unit Extracted by a condition term extraction unit that extracts condition terms without duplication from the condition, a condition term combination creation processing unit that creates a truth value combination of the condition terms extracted by the condition term extraction unit, and a condition element extraction unit Substituting the truth value combinations of the condition terms created by the condition term combination creation processing unit for the implementation conditions for each circuit element, and determining whether each truth combination of condition terms is implemented as a prototype pattern A CAD system for circuit design including a mounting determination unit for each prototype pattern. (6)

    (Supplementary Note 10) A condition element extraction unit that extracts mounting conditions, which are conditions for whether or not circuit elements constituting a circuit are mounted on the circuit, and mounting for each circuit element extracted from the condition element extraction unit Extracted by a condition term extraction unit that extracts condition terms without duplication from the condition, a condition term combination creation processing unit that creates a truth value combination of the condition terms extracted by the condition term extraction unit, and a condition element extraction unit Substituting the truth value combinations of the condition terms created by the condition term combination creation processing unit for the implementation conditions for each circuit element, and determining whether each truth combination of condition terms is implemented as a prototype pattern A prototype combination calculation program for causing a computer to function as an implementation determination unit for each prototype pattern. (7)

    (Supplementary Note 11) A condition element extraction step for extracting a mounting condition from the circuit design data, which is a condition for whether or not the circuit element constituting the circuit is mounted on the circuit, and the processor is extracted in the condition element extraction step. A condition term extraction step for extracting a condition term without duplication from the mounting conditions for each circuit element, and a condition term combination creation processing step for the processor to create a combination of the truth values of the condition terms extracted in the condition term extraction step And the processor substitutes the truth value combination of the condition term created in the condition term combination creation processing step for the mounting condition for each circuit element extracted in the condition element extraction step, and sets each truth value combination of the condition term. A prototype combination calculation method including a prototype determination mounting step for determining whether or not each circuit element is mounted as a prototype pattern. (8)

It is a conceptual diagram of this invention. It is a block block diagram of the trial manufacture combination calculation function which concerns on the 1st Embodiment of this invention. It is an example of the edit screen of a CAD system, and a component attribute screen. It is a hardware block diagram of the computer which concerns on the 1st Embodiment of this invention. It is an example of the circuit which concerns on the 1st Embodiment of this invention, and mounting condition setting. It is a whole components table | surface of the circuit used in the 1st Embodiment of this invention. It is an operation | movement flowchart of the trial manufacture combination calculation function which concerns on the 1st Embodiment of this invention. It is an example of the table which concerns on the condition extraction process of the 1st Embodiment of this invention. It is a table which concerns on the trial manufacture pattern calculation process of the 1st Embodiment of this invention. It is a table which concerns on the trial manufacture pattern calculation process of the 1st Embodiment of this invention. It is an operation | movement flowchart of the trial manufacture combination calculation function which concerns on other embodiment of this invention. It is an evaluation data display screen concerning other embodiments of the present invention. It is a parts table | surface which also shows the presence or absence of the mounting of the circuit element which concerns on background art.

Explanation of symbols

11 CPU
12 Main memory 13 ROM
14 HD
DESCRIPTION OF SYMBOLS 15 LAN card 16 Mouse | mouth 17 Keyboard 18 Video card 19 Sound card 20 Display 21 Speaker 22 Drive 31 Condition element extraction part 32 Conditional expression extraction part 33 Conditional term extraction part 41 Conditional term combination creation process part 42 Conditional expression evaluation processing for every conditional term combination Unit 43 Evaluation result line acquisition unit 44 Condition term combination exclusion unit 51 Mounting determination unit for each prototype pattern 61 Circuit diagram creation unit 62 Parts table creation unit

Claims (8)

A condition element extraction unit that extracts mounting conditions from circuit design data, which are conditions for determining whether or not circuit elements constituting the circuit are mounted on the circuit;
A condition term extraction unit that extracts condition terms without duplication from the mounting conditions for each circuit element extracted from the condition element extraction unit;
A conditional term combination creation processing unit that creates a combination of truth values of the conditional terms extracted by the conditional term extraction unit;
A circuit element with each combination of the truth value of the condition term as a prototype pattern by substituting the truth value combination of the condition term created by the condition term combination creation processing unit for the mounting condition for each circuit element extracted by the condition element extraction unit A prototype combination calculating apparatus including a prototype pattern-specific mounting determination unit for determining whether or not each packaging is mounted. A conditional expression extraction unit that extracts a conditional expression without duplication from the mounting conditions for each circuit element extracted from the condition element extraction unit;
Substituting the truth value combination of the condition term created by the condition term combination creation processing unit into the condition expression extracted by the condition expression extraction unit, and obtaining a permutation of the evaluation result of the condition expression for each truth value combination of the condition term A conditional expression evaluation processing unit for each conditional term combination;
Judge whether the permutations of the evaluation results of the conditional expressions overlap, and if the permutations of the evaluation results of the conditional expressions overlap, select from the combinations of truth values of the conditional terms related to the permutations of the evaluation results of the overlapping conditional expressions An evaluation result in which the truth value of the conditional term related to the permutation of one evaluation result is a prototype pattern and the combination of the truth values of the conditional term related to the permutation of the evaluation result is a trial pattern when the permutations of the evaluation result of the conditional expression do not overlap A new acquisition section,
The prototype combination calculation apparatus according to claim 1, wherein the prototype determination unit determines whether or not each circuit element is mounted for each prototype pattern from the evaluation result acquisition unit. The condition term combination exclusion unit for deleting the truth value combination of the condition term designated by the user from the truth value combination of the condition term created by the condition term combination creation processing unit is further included. The prototype combination calculation device described in 1. The prototype combination calculation apparatus according to any one of claims 1 to 3, wherein a circuit diagram including circuit elements mounted according to whether or not each circuit element for each prototype pattern obtained by the prototype pattern mounting determination unit is mounted is created. And a means for accepting from the user a condition term condition that is a condition for the condition term extracted by the condition term extraction unit,
The prototype combination calculation device according to any one of claims 1 to 3, wherein the conditional term combination creation processing unit creates a truth value combination of the conditional terms that satisfy the conditional term received from the user. A condition element extraction unit that extracts mounting conditions from circuit design data, which are conditions for determining whether or not circuit elements constituting the circuit are mounted on the circuit;
A condition term extraction unit that extracts condition terms without duplication from the mounting conditions for each circuit element extracted from the condition element extraction unit;
A conditional term combination creation processing unit that creates a combination of truth values of the conditional terms extracted by the conditional term extraction unit;
A circuit element with each combination of the truth value of the condition term as a prototype pattern by substituting the truth value combination of the condition term created by the condition term combination creation processing unit for the mounting condition for each circuit element extracted by the condition element extraction unit A CAD system for circuit design including a mounting determination unit for each prototype pattern for obtaining the presence or absence of each mounting. A condition element extraction unit that extracts mounting conditions from circuit design data, which are conditions for determining whether or not circuit elements constituting the circuit are mounted on the circuit;
A condition term extraction unit that extracts condition terms without duplication from the mounting conditions for each circuit element extracted from the condition element extraction unit;
A conditional term combination creation processing unit that creates a combination of truth values of the conditional terms extracted by the conditional term extraction unit;
A circuit element with each combination of the truth value of the condition term as a prototype pattern by substituting the truth value combination of the condition term created by the condition term combination creation processing unit for the mounting condition for each circuit element extracted by the condition element extraction unit A prototype combination calculation program for causing a computer to function as an implementation determination unit for each prototype pattern for obtaining presence / absence of each implementation. A condition element extraction step for the processor to extract from the circuit design data a mounting condition that is a condition for determining whether or not the circuit element constituting the circuit is mounted on the circuit;
A condition term extraction step in which the processor extracts a condition term without duplication from the mounting conditions for each circuit element extracted in the condition element extraction step;
A condition term combination creation processing step in which the processor creates a combination of truth values of the condition terms extracted in the condition term extraction step;
The processor substitutes the truth value combination of the condition term created in the condition term combination creation processing step for the mounting condition for each circuit element extracted in the condition element extraction step, and sets each truth value combination of the condition term as a prototype pattern. And a prototype combination calculation method including a prototype pattern implementation determination step for determining whether or not each circuit element is implemented.

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