Clock recovery circuit for Manchester encoded data
US5245635A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1991 |
| Grant date | Sep 14, 1993 |
| Priority date | — |
| Expiry date | Dec 4, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0066
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An input data stream (a manchester encoded data stream which includes a clock signal component and has some jitter) is inputted to a clock extractor for extracting the clock signal component, the clock signal component having missing clock pulses. A delay line oscillator provides the missing clock pulses and outputs a recovered clock signal. The recovered clock signal has a first delay time as a result of inherent delays in the delay line oscillator and the clock extractor. A latch element receives the recovered clock signal and the input data stream, the input data stream being delayed a second delay time, the first delay time and the second delay time being essentially the same. The latch element reclocks the input data stream thereby removing a maximum amount of jitter and removes any distortion of the input data stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.