发明名称 |
System and method for compacting a graphic layout |
摘要 |
In a graphic layout system, a terminal constraint graph generator (104) prepares terminal constraint graph data with component terminals (except routes) as one and the other nodes. Calculation is made of a limit of movement of the one node towards the other node in a moving direction with a routing zone interposed therebetween. The routing zone has a width equal to a sum of the width of a route or routes in the routing zone and a necessary gap. The limit of movement is memorized as a component relative movement limit length. The terminal constraint graph generator (104) prepares component constraint graph data recording as a graph length a minimum value of the component relative movement limit length with respect to the same component terminals. By the use of the component constraint graph data, a component compactor (107) compacts the arrangement of components.
|
申请公布号 |
US6385758(B1) |
申请公布日期 |
2002.05.07 |
申请号 |
US19990275076 |
申请日期 |
1999.03.24 |
申请人 |
NEC CORPORATION |
发明人 |
KIKUCHI HIDEO;SHIMOTSU TAKESHI |
分类号 |
H05K3/00;G06F17/50;H01L21/82;(IPC1-7):G06F17/50 |
主分类号 |
H05K3/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|