Apparatus and method for aiding in designing electronic circuits
First Claim
1. A circuit design aiding apparatus, comprising:
- a memory configured to store information about first and second pin groups to be wired to each other, the information including logical connection data that associates pins in the first pin group with pins in the second pin group; and
a processor configured to perform a procedure including;
selecting a set of pair candidates each specifying a first pair of pins in the first pin group and a second pair of pins in the second pin group which are associated with each other by the logical connection data, wherein distance between the first pair of pins, as well as distance between the second pair of pins, is within a specified range; and
determining which pins in the first and second pin groups are to be wired in pairs, based on the selected set of pair candidates, wherein;
two pair candidates are said to be adjacent when the two pair candidates share a pin in the second pin group, andthe determining includes producing a graph whose nodes respectively represent the pair candidates in the selected set and whose edges represent adjacency of the pair candidates in the selected set, choosing a first node in preference to a second node in the produced graph when a smaller number of edges extend from the first node than from the second node, and determining that the first pair of pins in the pair candidate represented by the chosen first node be wired to the second pair of pins in the pair candidate represented by the chosen first node.
1 Assignment
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Accused Products
Abstract
First and second pin groups are each formed from a plurality of pins associated with specific nets. Pins in the first pin group are to be wired to pins in the second pin group according to their associated nets. A candidate selection unit selects a set of pair candidates each specifying a first pair of pins in the first pin group and a second pair of pins in the second pin group. The first and second pairs of pins are associated with the same pair of nets, and their respective distances are within a specified range. A pair determination unit determines which pins in the first and second pin groups are to be wired in pairs, based on the pair candidates selected by the candidate selection unit.
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Citations
8 Claims
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1. A circuit design aiding apparatus, comprising:
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a memory configured to store information about first and second pin groups to be wired to each other, the information including logical connection data that associates pins in the first pin group with pins in the second pin group; and a processor configured to perform a procedure including; selecting a set of pair candidates each specifying a first pair of pins in the first pin group and a second pair of pins in the second pin group which are associated with each other by the logical connection data, wherein distance between the first pair of pins, as well as distance between the second pair of pins, is within a specified range; and determining which pins in the first and second pin groups are to be wired in pairs, based on the selected set of pair candidates, wherein; two pair candidates are said to be adjacent when the two pair candidates share a pin in the second pin group, and the determining includes producing a graph whose nodes respectively represent the pair candidates in the selected set and whose edges represent adjacency of the pair candidates in the selected set, choosing a first node in preference to a second node in the produced graph when a smaller number of edges extend from the first node than from the second node, and determining that the first pair of pins in the pair candidate represented by the chosen first node be wired to the second pair of pins in the pair candidate represented by the chosen first node. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A circuit design aiding method, comprising:
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reading, by a processor, information about first and second pin groups to be wired to each other, the information including logical connection data that associates pins in the first pin group with pins in the second pin group; selecting, by the processor, a set of pair candidates each specifying a first pair of pins in the first pin group and a second pair of pins in the second pin group which are associated with each other by the logical connection data, wherein distance between the first pair of pins, as well as distance between the second pair of pins, is within a specified range; and determining, by the processor, which pins in the first and second pin groups are to be wired in pairs, based on the selected set of pair candidates, wherein; two pair candidates are said to be adjacent when the two pair candidates share a pin in the second pin group, and the determining includes producing a graph whose nodes respectively represent the pair candidates in the selected set and whose edges represent adjacency of the pair candidates in the selected set, choosing a first node in preference to a second node in the produced graph when a smaller number of edges extend from the first node than from the second node, and determining that the first pair of pins in the pair candidate represented by the chosen first node be wired to the second pair of pins in the pair candidate represented by the chosen first node.
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8. A non-transitory computer-readable storage medium storing a program, the program causing a computer to perform a procedure comprising:
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reading information about first and second pin groups to be wired to each other, the information including logical connection data that associates pins in the first pin group with pins in the second pin group; selecting a set of pair candidates each specifying a first pair of pins in the first pin group and a second pair of pins in the second pin group which are associated with each other by the logical connection data, wherein distance between the first pair of pins, as well as distance between the second pair of pins, is within a specified range; and determining which pins in the first and second pin groups are to be wired in pairs, based on the selected set of pair candidates, wherein; two pair candidates are said to be adjacent when the two pair candidates share a pin in the second pin group, and the determining includes producing a graph whose nodes respectively represent the pair candidates in the selected set and whose edges represent adjacency of the pair candidates in the selected set, choosing a first node in preference to a second node in the produced graph when a smaller number of edges extend from the first node than from the second node, and determining that the first pair of pins in the pair candidate represented by the chosen first node be wired to the second pair of pins in the pair candidate represented by the chosen first node.
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Specification