Adaptive analog equalizer for partial response channels
US6216148A · kind A · utility
20Cited by
7References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 12, 1998 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Nov 12, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/10944
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A single analog filter structure within a partial response channel combines an antialias low pass filter and a time domain waveform shaping equalizer upstream of a digital sampler. The filter also improves latencies associated with timing acquisition of a sampler clock generator loop by removing the latency of a separate equalization filter. The filter also provides a method for adapting a combination of internal filter state voltages and currents in real time for optimizing pole locations of the analog filter structure, during both data and timing recovery operations of the channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.