Method of verifying wiring layout

Claim 1

A method of verifying a wiring layout, comprising the steps of: (a) preparing wiring layout data which includes a plurality of types of wiring elements including straight wiring; (b) preparing a first reference value representing a first minimum required distance in the wiring layout for each combination of two arbitrary types of third wiring elements; (c) preparing a second reference value representing a second minimum required distance between two straight wirings of the wiring elements in a predetermined positional relation on the wiring layout; (d) extracting two arbitrary types of said wiring elements from said wiring layout data; (e) determining the combination of said two arbitrary types of wiring elements extracted at said step (d); (f) determining whether said two straight wirings are in said predetermined positional relation on the wiring layout if said two arbitrary types of wiring elements extracted at said step (d) are both determined to be straight wirings in said step (e); (g) determining whether a predetermined relation can be established between said first or second reference value and the distance between said two arbitrary types of wiring elements extracted at said step (d) by comparing the distance between said two arbitrary types of wiring elements with said second reference value if said two arbitrary types of wiring elements are both determined to be straight wirings in said predetermined positional relation with each other in said step (f), and otherwise comparing said two arbitrary types of wiring elements extracted at said step (d) with said first reference value; and (h) displaying information for specifying said two arbitrary types of wiring elements extracted at said step (d) if said predetermined positional relation is determined to be established in said step (g).

Claim 2

A method of verifying a wiring layout, comprising the steps of: (a) preparing wiring layout data which includes a plurality of types of wiring elements including straight wiring; (b) preparing a first reference value representing a first minimum required distance in the wiring layout for each combination of two arbitrary types of third wiring elements; (c) preparing a second reference value representing a second minimum required distance between two straight wirings of the wiring elements in a predetermined positional relation on the wiring layout; (d) extracting two arbitrary types of said wiring elements from said wiring layout data; (e) determining the combination of said two arbitrary types of wiring elements extracted at said step (d); (f) determining whether said two straight wirings are in said predetermined positional relation on the wiring layout if said two arbitrary types of wiring elements extracted at said step (d) are both determined to be straight wirings in said step (e); (g) determining whether a predetermined relation can be established between said first or second reference value and the distance between said two arbitrary types of wiring elements extracted at said step (d) by comparing the distance between said two arbitrary types of wiring elements with said second reference value if said two arbitrary types of wiring elements are both determined to be straight wirings in said predetermined positional relation with each other in said step (f), and otherwise comparing said two arbitrary types of wiring elements extracted at said step (d) with said first reference value; and (h) displaying information for specifying said two arbitrary types of wiring elements extracted at said step (d) if said predetermined positional relation is determined to be established in said step (g).

Claim 8

An apparatus for verifying a wiring layout, comprising: inputting means for inputting wiring layout data which includes a plurality of types of wiring elements including straight wiring; wiring layout data storage means for storing data input at said inputting means including, a first area for storing a first reference value representing a first minimum required distance in the wiring layout for each combination of two arbitrary types of the wiring elements, a second area for storing a second reference value representing a second minimum required distance between two straight wirings of the wiring elements in a predetermined positional relation on the wiring layout, and a third area for storing required distances for other types of the wiring elements; graphic data storage means for storing graphic data including wiring elements to be checked; determining means for extracting two arbitrary types of said wiring elements from said wiring layout data and a determining whether said two arbitrary types of said wiring elements are parallel to each other; first required distance reading means for reading out said first minimum required distance from said wiring layout data storage means if said two arbitrary types of said wiring elements are determined to be parallel to each other by said determining means; second required distance reading means for reading gout said second minimum required distance from said wiring layout data storage means if said two arbitrary types of said wiring elements are determined as failing to be parallel with each other; distance verifying means for verifying the distance between said two straight wirings of said wiring elements by using said first or second minimum required distance in response to said determining means; and display means for displaying a result of the verification by said distance verifying means.

Claim 9

An apparatus for verifying a wiring layout, comprising: inputting means for inputting wiring layout data which includes a plurality of types of wiring elements including straight wiring; wiring layout data storage means for storing data input at said inputting means including, a first area for storing a first reference value representing a first minimum required distance in the wiring layout for each combination of two arbitrary types of the wiring elements, a second area for storing a second reference value representing a second minimum required distance between two straight wirings of the wiring elements in a predetermined positional relation on the wiring layout, and a third area for storing required distances for other types of the wiring elements; graphic data storage means for storing graphic data including wiring elements to be checked; determining means for extracting two arbitrary types of said wiring elements from said wiring layout data and a determining whether said two arbitrary types of said wiring elements are parallel to each other; first required distance reading means for reading out said first minimum required distance from said wiring layout data storage means if said two arbitrary types of said wiring elements are determined to be parallel to each other by said determining means; second required distance reading means for reading gout said second minimum required distance from said wiring layout data storage means if said two arbitrary types of said wiring elements are determined as failing to be parallel with each other; distance verifying means for verifying the distance between said two straight wirings of said wiring elements by using said first or second minimum required distance in response to said determining means; and display means for displaying a result of the verification by said distance verifying means.