Block-level design method for heterogeneous PG-structure cells

    公开(公告)号:US10515175B2

    公开(公告)日:2019-12-24

    申请号:US15723308

    申请日:2017-10-03

    Abstract: A partitioning method for partitioning a group of power-ground (PG) cells is disclosed. The method includes forming a first partition by selecting at least one in-boundary PG cell from the group of PG cells, adding at least one out-boundary PG cell from the group of PG cells into the first partition, forming a second partition by selecting the remaining in-boundary PG cells and the remaining out-boundary PG cells in the group of PG cells, calculating the total area of the in-boundary PG cells in the first partition, calculating the total area of the out-boundary PG cells in the first partition, calculating the total area of the in-boundary PG cells in the second partition, calculating the total area of the out-boundary PG cells in the second partition, and calculating the difference between the total areas of in-boundary PG cells in the first partition and the out-boundary PG cells in the first partition.

    Compression method and system for use with multi-patterning
    55.
    发明授权
    Compression method and system for use with multi-patterning 有权
    压缩方法和系统用于多图案化

    公开(公告)号:US09026953B2

    公开(公告)日:2015-05-05

    申请号:US14064229

    申请日:2013-10-28

    Abstract: A method comprises (a) providing an integrated circuit (IC) layout comprising data representing a plurality of circuit patterns to be formed on or in a single layer of an IC by multi-patterning; (b) dividing the plurality of circuit patterns into two or more groups; (c) assigning the circuit patterns within each group to a respective mask to provide mask assignment data, for forming each group of circuit patterns on or in the single layer of the IC; (d) compressing the mask assignment data; and (e) storing the compressed mask assignment data to a non-transitory machine readable storage medium for use by an electronic design automation tool configured for reconstructing the mask assignment data from the compressed data.

    Abstract translation: 一种方法包括(a)提供集成电路(IC)布局,其包括通过多图案化表示要形成在IC的单层上或其中的多个电路图案的数据; (b)将所述多个电路图案分成两组或更多组; (c)将每个组内的电路图案分配给相应的掩模以提供掩模分配数据,以在IC上或其单层中形成每组电路图案; (d)压缩掩模分配数据; 以及(e)将压缩的掩模分配数据存储到非暂时的机器可读存储介质,以供配置用于从压缩数据重建掩模分配数据的电子设计自动化工具使用。

    Pattern matching based parasitic extraction with pattern reuse
    56.
    发明授权
    Pattern matching based parasitic extraction with pattern reuse 有权
    基于模式匹配的寄生提取与模式重用

    公开(公告)号:US08732641B1

    公开(公告)日:2014-05-20

    申请号:US13677380

    申请日:2012-11-15

    CPC classification number: G06F17/50 G06F17/5036 G06F17/5081

    Abstract: The present disclosure relates to a method and apparatus for accurate RC extraction. A pattern database is configured to store layout patterns and their associated 3D extraction parameters. A pattern-matching tool is configured to partition a design into a plurality of patterns, and to search the pattern database for a respective pattern and associated 3D extraction parameters. If the respective pattern is already stored in the pattern database, then the associated 3D extraction parameters stored in the database are assigned to the respective pattern without the need to extract the respective pattern. If the respective pattern is not stored in the pattern database, then the extraction tool extracts the pattern and stores its associated 3D extraction parameters in the pattern database for future use. In this manner a respective pattern is extracted only once for a given design or plurality of designs. Moreover, the extraction result may be applied multiple times for a given design simultaneously, speeding up computation time. The extraction result may also be applied to a plurality of designs simultaneously.

    Abstract translation: 本公开涉及一种用于精确RC提取的方法和装置。 模式数据库被配置为存储布局模式及其相关的3D提取参数。 模式匹配工具被配置为将设计分割成多个模式,并且搜索模式数据库中的相应模式和相关联的3D提取参数。 如果相应的图案已经存储在图案数据库中,则存储在数据库中的相关3D提取参数被分配给相应的图案,而不需要提取相应的图案。 如果相应的图案不存储在图案数据库中,则提取工具提取图案并将其相关联的3D提取参数存储在图案数据库中以供将来使用。 以这种方式,对于给定的设计或多个设计,相应的图案仅被提取一次。 此外,提取结果可以同时应用于给定设计的多次,从而加快了计算时间。 提取结果也可以同时应用于多个设计。

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