G11B 20/10055
Using partial response filtering when writing the signal to the medium or
Official title: {using partial response filtering when writing the signal to the medium or reading it therefrom}
G11B20/10055 (Using partial response filtering when writing the signal to the medium or) appears on 772 US grants and 558 published applications in this corpus.
Search patents in G11B- Granted patents
- 772
- Published applications
- 558
- Assignees
- 133
- Inventors
- 804
- Latest grant
- 11 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 7 | 0 |
| 1995 | 11 | 0 |
| 1996 | 19 | 0 |
| 1997 | 13 | 0 |
| 1998 | 54 | 0 |
| 1999 | 39 | 0 |
| 2000 | 36 | 0 |
| 2001 | 42 | 14 |
| 2002 | 31 | 39 |
| 2003 | 45 | 48 |
| 2004 | 41 | 37 |
| 2005 | 27 | 41 |
| 2006 | 42 | 45 |
| 2007 | 42 | 113 |
| 2008 | 51 | 50 |
| 2009 | 34 | 32 |
| 2010 | 40 | 48 |
| 2011 | 38 | 25 |
| 2012 | 45 | 22 |
| 2013 | 34 | 6 |
| 2014 | 20 | 9 |
| 2015 | 10 | 3 |
| 2016 | 6 | 8 |
| 2017 | 4 | 2 |
| 2018 | 8 | 6 |
| 2019 | 6 | 3 |
| 2020 | 7 | 4 |
| 2021 | 3 | 1 |
| 2022 | 2 | 0 |
| 2023 | 2 | 2 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
- G11B 20/10111Partial response pr117
- G11B 20/10101Pr2 or pr, i.e. partial response class 2, polynomial 2=1+2d+d2107
- G11B 20/10175Pr4, pr, i.e. partial response class 4, polynomial =71
- G11B 20/10083Pr1 or pr, i.e. partial response class 1, polynomial 1+d63
- G11B 20/1012Partial response pr58
- G11B 20/10074Epr4, i.e. extended partial response class 4, polynomial *254
- G11B 20/10064Eepr4 or e2pr4, i.e. extended partial response class 4, polynomial *321
- G11B 20/10148Partial response pr16
All 14 subgroupsShow fewer
Recent patents
- Rotation filter for digital timing recovery in hard disk drive read channel11 Mar 2025US 12,249,349 B1Marvell Asia Pte Ltd
- Signal processing device, signal processing method, and program5 Sep 2023US 11,749,307 B2Sony Group Corporation
- Magnetic reproducing and processing device, magnetic recording and reproducing device, and magnetic reproducing method7 Mar 2023US 11,600,297 B1Kabushiki Kaisha Toshiba
- Data path dynamic range optimization14 Jun 2022US 11,361,788 B2Seagate Technology LLC
- Machine learning-based read channel data detection31 May 2022US 11,348,037 B2Western Digital Technologies, Inc.
- Magnetic reproducing and processing device, magnetic recording and reproducing device, and magnetic reproducing method2 Mar 2023US 2023/0068268 A1Kabushiki Kaisha Toshiba
- Signal processing device, signal processing method, and program9 Feb 2023US 2023/0043380 A1Sony Group Corporation
- Machine Learning-based Read Channel Data Detection16 Dec 2021US 2021/0390459 A1Western Digital Technologies, Inc.
- Decoding device and decoding method19 Nov 2020US 2020/0366319 A1Sony Semiconductor Solutions Corporation
- Data path dynamic range optimization27 Feb 2020US 2020/0065262 A1Seagate Technology LLC
Most cited
By later US patents
- Disk drive employing read channel IC with common port for data and servo233US 6,278,568 B1Western Digital Corporation · 2001
- Disk drive employing read error tolerant sync mark detection216US 6,411,452 B1Western Digital Technologies, Inc. · 2002
- Disk drive comprising a dual read element and delay circuitry to improve read signal207US 8,139,301 B1Western Digital (Fremont), LLC · 2012
- Equalization for sample value estimation and sequence detection in a sampled amplitude read channel185US 5,585,975 ACirrus Logic, Inc. · 1996
- Disk storage system employing error detection and correction of channel coded data, interpolated timing recovery, and retroactive/split-segment symbol synchronization180US 6,009,549 ACirrus Logic, Inc. · 1999