DESIGN RULE MANAGEMENT METHOD, DESIGN RULE MANAGEMENT PROGRAM, RULE MANAGEMENT APPARATUS AND RULE VERIFICATION APPARATUS

• US 20080229262A1
• Filed: 01/18/2008
• Published: 09/18/2008
• Est. Priority Date: 03/16/2007
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: HARASHIMA, Ichiro, Nakashima, Keisuke
• Granted Patent: US 7,765,505 B2
• Time in Patent Office: Days
• US Class Current: 716/5
• CPC Class Codes: G06F 2111/04 Constraint-based CAD
• CPC Class Codes: G06F 30/398 Design verification or optimisation, e.g. using design rule check [DRC], layout versus schematics [LVS] or finite element methods [FEM] optical proximity correction [OPC] design processes G03F1/36

Abstract

Disclosed is a rule management apparatus which acquires a design rule for regulating a part shape from systems such as a CAD system 401, converts the acquired deign rule into data having a hierarchical node format, calculates relationship strength which indicates strength of a relationship between the design rule converted into data having a hierarchical node format and another node, sets to the relationship strength between design rules which are substantially the same but described in different systems to be a maximum value, and stores in an integrating rule DB 300 the relationship strength and the design rules in association with one another.

Claims

1. A design rule management method implemented in a rule management apparatus which manages design rules for specifying a part shape and comprises a processing unit for processing information;

an input unit for inputting information; and

a storage unit for storing information;

the method allowing the processing unit to perform steps comprising;

acquiring a plurality of the design rules via the input unit;

converting each of the acquired design rules into data having a hierarchical node format;

calculating, for each design rule converted into data having the hierarchical node format, relationship strength indicating strength of a relationship to another node;

converting into a predetermined value the relationship strength between a first design rule and a second design rule, and storing in the storage unit the relationship strength, the first design rule and the second design rule in association with one another,

wherein the first design rule is arbitrarily chosen from the plurality of the design rules and the second design rule is substantially the same as the first design rule but described in a manner different from that of the first design rule.

2. The method according to claim 1, wherein the rule management apparatus comprises a thesaurus, and calculating the relationship strength comprises:

at the processing unit, comparing names of each of the design rules with reference to the thesaurus and determining the relationship strength of the design rules on the basis of a similarity degree between the names of the design rules.

3. The method according to claim 1, wherein the rule management apparatus further comprises a thesaurus, and

the relationship strength is calculated in such a manner that,

the processing unit:

refers to and searches the thesaurus for an attribute name similar to a name of an attribute used in each design rule or a part name similar to a name of a part used in each design rule, so as to find a similarity degree of the attribute names or the part names between the design rule and the thesaurus, and

based on the similarity degree, determine the relationship strength between the design rule and the attribute or the part.

4. The method according to claim 3, wherein the steps performed by the processing unit further comprises displaying hierarchically as nodes the design rules and the attributes having the relationship strength on a displaying unit, and

in a calculating of the relationship strength, those of the attributes which are substantially equal to each other are linked to each other on the display unit via the input unit, so as to have a maximum value of the relationship strength between the linked attributes, thereby to have a maximum value of the relationship strength between the design rules that use the linked attributes.

8. A design rule management program recorded in a computer readable recording medium which performs the method according to claim 1.

5. A design rule management method implemented in a rule verification apparatus for checking a violation against a design rule which specifies a part shape when there is any change in parameters in a system,

the rule verification apparatus comprising:

a processing unit for processing information;

an input unit for inputting information; and

a storage unit for storing a first design rule, a second design rule and relationship strength therebetween in association with one another,

the method allowing the processing unit to perform steps comprising;

acquiring the changed parameter via the input unit; and

in a rule verification to determine whether or not there is any violation in the design rules that use the changed parameter, acquiring from the storage unit all the design rules having the relationship strength of a predetermined value, and performing the rule verification on all the acquired design rules.

6. The method according to claim 5, further comprising;

displaying, when the acquired parameter violates any one of the design rules, a message indicating a rule violation occurs in the design rule on a displaying unit.

7. The method according to claim 5, wherein the rule verification apparatus is capable of communicating with a client terminal and displays, when the acquired parameter violates any one of the design rules, a message indicating a rule violation occurs in the design rule on a displaying unit of the client terminal.

9. A design rule management program recorded in a computer readable recording medium which performs the method according to claim 5.

10. A rule management apparatus for managing design rules which specify a part shape and comprise a processing unit for processing information, an input unit for inputting information and a storage unit for storing information, wherein

the processing unit:

acquires a plurality of the design rules via the input unit;

converting each of the acquired design rules into data having a hierarchical node format;

calculates, for each design rule converted into data having the hierarchical node format, relationship strength indicating strength of a relationship to another node,

converts into a predetermined value the relationship strength between a first design rule and a second design rule, and storing in the storage unit the relationship strength, the first

design rule and the second design rule in association with one another, wherein the first design rule is arbitrarily chosen from the plurality of the design rules and the second design rule is substantially the same as the first design rule but described in a manner different from that of the first design rule.

11. A rule verification apparatus for checking a violation against a design rule which specifies a part shape when there is any change in parameters in a system,

the rule verification apparatus comprising:

a processing unit for processing information;

an input unit for inputting information; and

a storage it for storing a first design rule, a second design rule and relationship strength therebetween in association with one another, wherein

the processing unit;

acquires the parameter which is changed via the input unit;

in a rule verification to determine whether or not there is any violation in the design rules that use the changed parameter, acquires from the storage unit all the design rules having a predetermined value in the relationship strength with the design rule using the acquired parameter, and performs a rule verification on all the acquired design rules.