Read channel equalization with enhanced signal to noise ratio
US6414810B1 · kind B1 · utility
1Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1999 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Apr 28, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of equalizing a read channel of a mass magnetic memory device comprises attenuating the low frequencies of the spectrum of the analog signal originating from an electromagnetic read transducer without boosting the high frequency harmonic components of the spectrum. The low frequencies of the spectrum of the analog input signal are attenuated with a low pass filter of an order in a range from 6 to 8 and a boost is implemented by introducing two real and opposed zeroes in the transfer function of the filter without altering the group delay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.