Segmented crosspoint switch array
US6816057B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2001 |
| Grant date | Nov 9, 2004 |
| Priority date | — |
| Expiry date | Dec 18, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13322
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A switch for routing input signals from any of N input terminals to one or more of M output terminals includes a high-speed N×M crosspoint switch array providing the necessary signal paths. Each of a set of N input drivers buffers a separate one of the input signals into the crosspoint array and each of a set of M output drivers buffers an array output signal onto a separate one of the output terminals. The crosspoint switch array is horizontally and/or vertically segmented by input and output buffers to limit the amount of the array's capacitance that each input driver must charge and discharge when the input signals change state, thereby reducing signal path delay through the crosspoint array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.