Digitally assisted ultra-fast bandwidth calibration of a programmable analog filter
US11183211B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2020 |
| Grant date | Nov 23, 2021 |
| Priority date | — |
| Expiry date | Jul 17, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10046
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for improving seek times in a read channel performing a read operation on a disk drive are disclosed. The method includes extrapolating, based on initial filter settings corresponding to a first user-data region or a first servo-data region and tracked settings varying over time, a proportionality constant for the programmable analog filter, in response to determining a new target frequency for the programmable analog filter corresponding to a second user-data region or a second servo-data region, computing new filter settings for the programmable analog filter based on the extrapolated proportionality constant, and transmitting, to the programmable analog filter, the computed new filter settings corresponding to the new target frequency of the second user-data region or the second servo-data region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.