Method and apparatus for signal detection and baseline wander cancellation
US9485120B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 25, 2015 |
| Grant date | Nov 1, 2016 |
| Priority date | — |
| Expiry date | Aug 25, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/06
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Apparatus, methods, and other embodiments associated with reliably determining signal loss over a data communication channel have been described. According to one embodiment, a method includes receiving input signals at an input of a serializer/deserializer device and equalizing the input signals to form equalized signals which compensate for frequency response distortion. The method also includes analyzing the equalized signals to determine whether peak amplitudes of the equalized signals are within a range of amplitudes defined by two threshold values. Furthermore, the method includes analyzing the equalized signals to determine whether logic levels of the equalized signals correspond to a sequence of a same logic level. The method further includes generating a signal absent indicator when the peak amplitudes of the equalized signals are within the range, or when the logic levels of the equalized signals correspond to the sequence of the same logic level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.