Calculation apparatus for performing algebraic and logic computations using iterative calculations and storage of intermediate results
US5528530A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1995 |
| Grant date | Jun 18, 1996 |
| Priority date | — |
| Expiry date | Jan 12, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J2203/0003
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A desynchronizer (20) for desynchronizing data stored within synchronous payload envelopes of a synchronous communication protocol such as SONET (Synchronous Optical Network), provides for smoothing the periodically discontinuous clock signal associated with that data after the synchronous communication protocol overhead has been removed. The desynchronizer accommodates for shifts in the position of the payload envelope and hence, the data within the synchronous communication frame as well as adjustments within the data itself due to asynchronous bit stuff information. The desynchronizer utilizes a leak filter (26) having a linear branch (54) and an integrator branch (56), both branches having adjustable factors (61, 63, 65, 88, 90, 91, 93, 95, 100, 102, 105) regarding their operation, wherein the adjustable factors are selected depending upon threshold values (86, 87, 89, 62) which in turn are based upon the difference between the average write address and read address for the associated elastic store (22) within which the incoming data removed from the synchronous communication system frame is temporarily stored. The leak filter (26) forms part of a phase locked loop which in tur…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.