Improved pad ring router
US5377125A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1992 |
| Grant date | Dec 27, 1994 |
| Priority date | — |
| Expiry date | Feb 28, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2113/18
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method sizes routing channels used to route pads to a logic core. Six channels are defined. The six channels include a first special channel, a second special channel, a left channel, a right channel, a bottom channel and a top channel. The first special channel is immediately below the logic core and within a span of the logic core. The second special channel is immediately above the logic core and within a span of the logic core. The left channel is adjacent to a left side of the logic core, the first special channel and the second special channel. The right channel is adjacent to a right side of the logic core, the first special channel and the second special channel. The bottom channel is adjacent to a bottom side of the left channel, the first special channel and the right channel. The top channel is adjacent to a top side of the left channel, the first special channel and the right channel. Pads are positioned at a top side of the top channel, at a bottom side of the bottom channel, at a left side of the left channel and at a right side of the right channel. After performing a global route through the six channels, the six channels are re-sized based on channel density resu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.