G11B 20/10046
Filtering or equalising
Official title: {filtering or equalising, e.g. setting the tap weights of an FIR filter}
G11B20/10046 (Filtering or equalising) appears on 1,892 US grants and 1,250 published applications in this corpus.
Search patents in G11B- Granted patents
- 1,892
- Published applications
- 1,250
- Assignees
- 279
- Inventors
- 1,991
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 6 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 6 | 0 |
| 1986 | 8 | 0 |
| 1987 | 8 | 0 |
| 1988 | 5 | 0 |
| 1989 | 11 | 0 |
| 1990 | 11 | 0 |
| 1991 | 13 | 0 |
| 1992 | 19 | 0 |
| 1993 | 27 | 0 |
| 1994 | 28 | 0 |
| 1995 | 23 | 0 |
| 1996 | 44 | 0 |
| 1997 | 34 | 0 |
| 1998 | 81 | 0 |
| 1999 | 52 | 0 |
| 2000 | 74 | 0 |
| 2001 | 76 | 20 |
| 2002 | 58 | 76 |
| 2003 | 78 | 80 |
| 2004 | 68 | 80 |
| 2005 | 45 | 81 |
| 2006 | 77 | 101 |
| 2007 | 77 | 171 |
| 2008 | 100 | 99 |
| 2009 | 82 | 90 |
| 2010 | 94 | 96 |
| 2011 | 119 | 70 |
| 2012 | 103 | 55 |
| 2013 | 75 | 39 |
| 2014 | 112 | 56 |
| 2015 | 79 | 36 |
| 2016 | 51 | 39 |
| 2017 | 30 | 11 |
| 2018 | 28 | 17 |
| 2019 | 21 | 8 |
| 2020 | 15 | 11 |
| 2021 | 12 | 6 |
| 2022 | 10 | 2 |
| 2023 | 3 | 3 |
| 2024 | 3 | 2 |
| 2025 | 4 | 0 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Digital timing recovery in hard disk drive read channel for preamble reduction11 Aug 2026US 12,706,119 B1Marvell Asia Pte Ltd
- Channel circuit with trained neural network noise mixture estimator17 Mar 2026US 12,580,017 B2Western Digital Technologies, Inc.
- Method and apparatus for multi-stage equalization for reading data from storage media3 Feb 2026US 12,542,159 B1Marvell Asia Pte Ltd
- Generating multi-sensory media channels from a base digital waveform for delivery in a vibroacoustic therapy bed8 Jul 2025US 12,350,440 B2Opus Immersive, Inc.
- Method and apparatus for multi-stage equalization for reading data from storage media25 Mar 2025US 12,260,878 B1Marvell Asia Pte Ltd
- Read after write in a multiple revolution hard disk drive29 Jan 2026US 2026/0031106 A1Seagate Technology LLC
- Channel Circuit with Trained Neural Network Noise Mixture Estimator23 May 2024US 2024/0170056 A1Western Digital Technologies, Inc.
- Magnetic reproduction processing device, magnetic recording/reproducing device, and magnetic reproducing method29 Feb 2024US 2024/0071421 A1Kabushiki Kaisha Toshiba
- Magnetic disk device and parameter setting method of magnetic disk device27 Jul 2023US 2023/0238031 A1Kabushiki Kaisha Toshiba
- Magnetic reproducing and processing device, magnetic recording and reproducing device, and magnetic reproducing method2 Mar 2023US 2023/0068268 A1Kabushiki Kaisha Toshiba
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