G11B 5/59688
Servo signal format patterns or signal processing thereof
Official title: {Servo signal format patterns or signal processing thereof, e.g. dual, tri, quad, burst signal patterns}
G11B5/59688 (Servo signal format patterns or signal processing thereof) appears on 702 US grants and 351 published applications in this corpus.
Search patents in G11B- Granted patents
- 702
- Published applications
- 351
- Assignees
- 109
- Inventors
- 971
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 31 | 0 |
| 1999 | 36 | 0 |
| 2000 | 46 | 0 |
| 2001 | 26 | 5 |
| 2002 | 12 | 9 |
| 2003 | 14 | 7 |
| 2004 | 8 | 7 |
| 2005 | 11 | 10 |
| 2006 | 30 | 27 |
| 2007 | 25 | 29 |
| 2008 | 34 | 34 |
| 2009 | 24 | 33 |
| 2010 | 42 | 31 |
| 2011 | 37 | 23 |
| 2012 | 26 | 10 |
| 2013 | 23 | 20 |
| 2014 | 43 | 9 |
| 2015 | 25 | 9 |
| 2016 | 29 | 9 |
| 2017 | 10 | 6 |
| 2018 | 13 | 4 |
| 2019 | 19 | 10 |
| 2020 | 19 | 9 |
| 2021 | 13 | 8 |
| 2022 | 9 | 6 |
| 2023 | 8 | 12 |
| 2024 | 20 | 14 |
| 2025 | 12 | 5 |
| 2026 | 6 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Burst pattern track-to-track phase adjustment in a data storage device29 Sep 2026US 12,749,504 B1Western Digital Technologies, Inc.
- Magnetic disk device and method18 Aug 2026US 12,711,984 B2Kabushiki Kaisha Toshiba
- Servo sectors having multiple servo address marks in a data storage device3 Mar 2026US 12,567,436 B1Western Digital Technologies, Inc.
- Dual channel burst gain switching in a data storage device17 Feb 2026US 12,555,605 B2Western Digital Technologies, Inc.
- Detection device, inspection device, magnetic tape cartridge, magnetic tape, magnetic tape drive, magnetic tape system, detection method, inspection method, and program13 Jan 2026US 12,525,257 B2FUJIFILM Corporation
- Burst Pattern Track-to-Track Phase Adjustment in a Data Storage Device1 Oct 2026US 2026/0301766 A1Western Digital Technologies, Inc.
- Magnetic disk device and method24 Sep 2026US 2026/0290391 A1
- Magnetic disk device and method18 Jun 2026US 2026/0171109 A1Kabushiki Kaisha Toshiba
- Magnetic disk apparatus12 Mar 2026US 2026/0073941 A1Kabushiki Kaisha Toshiba
- Dual Channel Burst Gain Switching in a Data Storage Device12 Feb 2026US 2026/0045276 A1Western Digital Technologies, Inc.
Most cited
By later US patents
- Head positioning control system for use in a disk drive using different target velocity data for read and write seeks222US 6,002,544 AKabushiki Kaisha Toshiba · 1999
- Repeatable runout cancellation in sectored servo disk drive positioning system177US 6,141,175 AWestern Digital Corporation · 2000
- Disk drive employing a disk with a pristine area for storing encrypted data accessible only by trusted devices or clients to facilitate secure network communications177US 7,003,674 B1Western Digital Ventures, Inc. · 2006
- Hard disk drive having self-written servo burst patterns165US 6,519,107 B1Maxtor Corporation · 2003
- Method and apparatus to compensate for servo wedge rotational offset after a head switch162US 6,067,206 AWestern Digital Corporation · 2000