High frequency and idle communication signal state detection
US8432981B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2010 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Jun 3, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04K3/822
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Various techniques are provided to detect a state of a communication signal. In one example, a method of detecting a state of a signal includes receiving a differential communication signal comprising a positive portion and a complementary negative portion. The method also includes generating a common mode voltage signal from the positive portion and the negative portion of the communication signal. The method also includes rectifying the positive portion and the negative portion of the communication signal to provide a rectified signal. The method also includes comparing the common mode voltage, signal with the rectified signal. The method also includes generating a high frequency detect signal in response to the comparing. The method also includes determining whether the communication signal is in an idle state or a high frequency state based on the high frequency detect signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.