Wiring routes in a plurality of wiring layers

Details Wiring routes in a plurality of wiring layers Wiring routes in a plurality of wiring layers

1994-01-21

1994-12-20

Trans, Vincent N.

Boots, shoes, and leggings

364489, 364488, G06F 1560

Patent

active

053750691

ABSTRACT:
A wiring processing method for determining a wiring route for connecting terminals includes a step of dividing a wirable region into a plurality of rectangular regions in a virtual region corresponding to a chip, a step of searching a rectangular region for connecting the terminals to be wired by tracing mutually crossings rectangular regions, and a step of determining a detailed wiring route inside the searched rectangular region. Since the search is conducted by use of the rectangular region as a unit, high speed search can be made.

REFERENCES:
patent: 4752887 (1988-06-01), Kuwahara
patent: 4805113 (1989-02-01), Ishii et al.
patent: 4823276 (1989-04-01), Hiwatashi
patent: 4855929 (1989-08-01), Nakajima
patent: 4910680 (1990-03-01), Hiwatashi
patent: 5046017 (1991-09-01), Yuyama et al.
patent: 5072402 (1991-12-01), Ashtaputre et al.
patent: 5119317 (1992-06-01), Narikawa et al.
"A New Routing Region Definition and Ordering Scheme Using L-Shape Channels" by Dai et al., IEEE Proceedings of ISCAS 1985, pp. 29-30.

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