Receiver and method for synchronizing and detecting coded waveforms
US4080572A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1976 |
| Grant date | Mar 21, 1978 |
| Priority date | — |
| Expiry date | Nov 24, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0331
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A receiver and method for detecting a Manchester coded waveform is disclosed. The waveform is clocked to provide a number of digital samples of each positive and negative pulse. Each positive pulse is validated provided that a predetermined number (k) of the total samples (N) is more positive than a positive (+T) threshold level and a predetermined consecutive number (j) of the samples (N) are more positive than a negative (-T) threshold level. Each negative pulse is validated provided that (k) of (N) samples is more negative than the -T threshold level and (j) of (N) are more negative than the +T threshold level. Each data bit pulse synchronizes each succeeding data bit pulse by providing a predetermined time interval during which the midpoint of each pulse must change between a positive and negative waveform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.