Binary tree switching network
US5212587A · kind A · utility
9Cited by
11References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1990 |
| Grant date | May 18, 1993 |
| Priority date | — |
| Expiry date | Dec 27, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A binary tree switching network in which the switching states are configured to switch an input signal from a selected input to an output by means of a control code set having a minimum Hamming distance (d) greater than one which eliminates cross-talk of order (d-1) and less. Such a network may be used for switching optical signals by means of optical beam deflector stages, each having a variable polarization rotator and a polarization sensitive deflector. Elimination of first order cross-talk is readily achieved by a modification stage arranged to receive a single input from the preceding stages and to pass it to the output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.