G11B 2020/1265
Control data, system data or management information, i.e. data used to access
Official title: {Control data, system data or management information, i.e. data used to access or process user data}
G11B2020/1265 (Control data, system data or management information, i.e. data used to access) appears on 2,206 US grants and 2,150 published applications in this corpus.
Search patents in G11B- Granted patents
- 2,206
- Published applications
- 2,150
- Assignees
- 238
- Inventors
- 2,084
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 9 | 0 |
| 1994 | 13 | 0 |
| 1995 | 11 | 0 |
| 1996 | 13 | 0 |
| 1997 | 17 | 0 |
| 1998 | 33 | 0 |
| 1999 | 36 | 0 |
| 2000 | 81 | 0 |
| 2001 | 76 | 41 |
| 2002 | 66 | 110 |
| 2003 | 86 | 118 |
| 2004 | 78 | 184 |
| 2005 | 59 | 197 |
| 2006 | 153 | 202 |
| 2007 | 166 | 318 |
| 2008 | 200 | 320 |
| 2009 | 206 | 141 |
| 2010 | 178 | 102 |
| 2011 | 299 | 211 |
| 2012 | 131 | 62 |
| 2013 | 86 | 31 |
| 2014 | 47 | 15 |
| 2015 | 30 | 19 |
| 2016 | 26 | 18 |
| 2017 | 22 | 12 |
| 2018 | 14 | 9 |
| 2019 | 7 | 6 |
| 2020 | 7 | 5 |
| 2021 | 16 | 17 |
| 2022 | 10 | 3 |
| 2023 | 7 | 3 |
| 2024 | 4 | 3 |
| 2025 | 2 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G11B 2020/1267Address dataIndexing code727
- G11B 2020/1287Synchronisation patternIndexing code560
- G11B 2020/1275Calibration dataIndexing code396
- G11B 2020/1281Servo informationIndexing code365
- G11B 2020/1277For managing gaps between two recordingsIndexing code356
- G11B 2020/1278Physical format specifications of the record carrierIndexing code261
- G11B 2020/1285Status of the record carrierIndexing code255
Recent patents
- Magnetic disk apparatus and method10 Mar 2026US 12,573,426 B2Kabushiki Kaisha Toshiba
- Multi-revolution hard disk drives with reduced servo overhead2 Dec 2025US 12,488,807 B2Seagate Technology LLC
- Magnetic disk device20 May 2025US 12,308,055 B2Kabushiki Kaisha Toshiba
- Magnetic disk apparatus and method24 Dec 2024US 12,176,002 B1Kabushiki Kaisha Toshiba
- Servo pattern recording method, servo pattern recording apparatus, method of producing tape-like magnetic recording medium, tape-like magnetic recording medium, and servo write head5 Nov 2024US 12,136,437 B2Sony Group Corporation
- Magnetic disk apparatus and method30 Jul 2026US 2026/0221159 A1Kabushiki Kaisha Toshiba
- Multi-revolution hard disk drives with reduced servo overhead27 Nov 2025US 2025/0364008 A1Seagate Technology LLC
- Magnetic disk apparatus and method20 Mar 2025US 2025/0095684 A1Kabushiki Kaisha Toshiba
- Magnetic disk device and method19 Sep 2024US 2024/0312485 A1Kabushiki Kaisha Toshiba
- Servo pattern recording method, servo pattern recording apparatus, method of producing tape-like magnetic recording medium, tape-like magnetic recording medium, and servo write head9 May 2024US 2024/0153535 A1Sony Group Corporation
Most cited
By later US patents
- Sector architecture for fixed block disk drive234US 5,523,903 AInternational Business Machines Corporation · 1996
- 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
- Embedded servo banded format for magnetic disks for use with a data processing system209US 5,278,703 ADigital Equipment Corporation · 1994
- Disk drive employing state variable trap registers for providing stored servo and user data state variables to sampled-data channel175US 6,178,056 B1Western Digital Corporation · 2001