Method and apparatus for detecting and adjusting characteristics of a signal
US7696800B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2008 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | May 15, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0288
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Disclosed is a circuit that adjusts a characteristic of a signal transmitted from a transmitter to a receiver over a communication channel (e.g., a wire, a backplane, etc.). The circuit includes a latch that receives the signal at a predetermined point in the circuit and samples a voltage of the signal many times after a threshold voltage is applied to the latch. The circuit also includes a processor that determines the characteristic of the signal when the sampled voltages indicate a transition point and that adjusts the threshold voltage when the sampled voltages do not indicate a transition point. The processor adjusts the characteristic of the signal by adjusting at least one of a current and a voltage of the transmitter when the characteristic of the signal is outside a predetermined range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.