Digital signal detection for high speed signaling systems
US7477704B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 16, 2003 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Aug 25, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S388/91
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and apparatuses for detecting digital signals in high speed signaling systems. In at least one embodiment, at least one received input signal is combined with a plurality of predetermined reference signals according to a plurality of prior digital signal output states to generate a signal for detecting a present digital signal output state. In one aspect of the invention, a method for determining a digital signal state in a differential signaling system includes: comparing a first differential input signal to a second differential input signal; determining a prior digital signal output state; comparing the first differential input signal to one of a first reference voltage and a second reference voltage; comparing the second differential input signal to one of the first reference voltage and the second reference voltage; and determining a present digital signal output state from the prior digital signal output state and from all of the comparisons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.