Desynchronizer for adjusting the read data rate of payload data received over a digital communication network transmitting payload data within frames
US5404380A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1992 |
| Grant date | Apr 4, 1995 |
| Priority date | — |
| Expiry date | Aug 25, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/076
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A desynchronizer for processing pointer movements and stuff bit information associated with payload data transmitted within a synchronous digital communication network. The desynchronizer includes a payload extractor (58) for removing payload data and storing it in an elastic store (32). The extractor also removes the pointer and stuff bit information which is passed through a digital low pass bit leaking module (36). The difference between the write and read addresses of the elastic store is determined (modules 48 and 50) and algebraically combined with the output of the bit leaking module (36) so as to provide the necessary data for adjusting the instantaneous frequency of a variable controlled oscillator (44) that generates the timing base for the read clock for reading the payload from the elastic store in a manner that minimizes jitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.