Method for generating a pseudo-signal in an error rate supervisory unit and circuit for carrying out the same
US4247938A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 1979 |
| Grant date | Jan 27, 1981 |
| Priority date | — |
| Expiry date | May 18, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/241
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and circuit for generating a pseudo-error signal comprising a demodulator circuit for demodulating an input signal; a first discriminator circuit for regenerating a first digital data signal by discriminating the output of the demodulator circuit; a noise extracting means for extracting a noise component from the input signal; an adding circuit for adding the output of the noise extracting means and the output of the demodulator circuit; a second discriminator circuit for regenerating a second digital data signal by discriminating the output of the adding circuit, and; an exclusive OR circuit for recognizing whether or not the first digital data signal coincides with the second digital data signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.