Apparatus for converting an alternate mark inversion signal to unipolar signals with frequency dependent amplification
US5113186A · kind A · utility
5Cited by
4References
17Claims
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Assignee
Inventor
Key dates
| Filing date | Dec 28, 1990 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | Dec 28, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M5/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The apparatus converts an AMI signal into three unipolar signals by selectively amplifying the AMI signals so that higher frequency components are amplified greater than lower components and then comparing the AMI signal with a positive and negative threshold to provide a first unipolar signal having information relating to positive levels of said AMI signal, a second unipolar signal having information relating to negative levels of said AMI signal and a Or gate for combining said first and second signals to provide a third signal having information related to both positive and negative levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.