G11B 20/00
Signal processing not specific to the method of recording or reproducing
Official title: Signal processing not specific to the method of recording or reproducing; Circuits therefor
G11B20/00 (Signal processing not specific to the method of recording or reproducing) appears on 24,556 US grants and 18,048 published applications in this corpus.
Search patents in G11B- Granted patents
- 24,556
- Published applications
- 18,048
- Assignees
- 2,558
- Inventors
- 23,207
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 56 | 0 |
| 1977 | 72 | 0 |
| 1978 | 43 | 0 |
| 1979 | 46 | 0 |
| 1980 | 58 | 0 |
| 1981 | 60 | 0 |
| 1982 | 102 | 0 |
| 1983 | 105 | 0 |
| 1984 | 138 | 0 |
| 1985 | 205 | 0 |
| 1986 | 178 | 0 |
| 1987 | 200 | 0 |
| 1988 | 179 | 0 |
| 1989 | 275 | 0 |
| 1990 | 203 | 0 |
| 1991 | 173 | 0 |
| 1992 | 259 | 0 |
| 1993 | 324 | 0 |
| 1994 | 409 | 0 |
| 1995 | 477 | 0 |
| 1996 | 521 | 0 |
| 1997 | 583 | 0 |
| 1998 | 867 | 0 |
| 1999 | 701 | 0 |
| 2000 | 797 | 0 |
| 2001 | 837 | 415 |
| 2002 | 787 | 1303 |
| 2003 | 887 | 1239 |
| 2004 | 910 | 1468 |
| 2005 | 683 | 1644 |
| 2006 | 1220 | 1615 |
| 2007 | 1061 | 1780 |
| 2008 | 1101 | 1478 |
| 2009 | 1069 | 1110 |
| 2010 | 1155 | 893 |
| 2011 | 1285 | 784 |
| 2012 | 1047 | 557 |
| 2013 | 792 | 476 |
| 2014 | 926 | 584 |
| 2015 | 766 | 478 |
| 2016 | 561 | 435 |
| 2017 | 461 | 379 |
| 2018 | 383 | 288 |
| 2019 | 396 | 280 |
| 2020 | 322 | 234 |
| 2021 | 265 | 172 |
| 2022 | 200 | 134 |
| 2023 | 137 | 99 |
| 2024 | 118 | 99 |
| 2025 | 100 | 55 |
| 2026 | 56 | 49 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G11B 20/10Digital recording or reproducing20,821
- G11B 20/00086Circuits for prevention of unauthorised reproduction or copying4,601
- G11B 20/00007Time or data compression or expansion1,349
- G11B 20/22Signal processing not specific to the method of recording or reproducing: for389
- G11B 20/24Signal processing not specific to the method of recording or reproducing: for268
- G11B 20/02Analogue recording or reproducing221
- G11B 20/00992Circuits for stereophonic or quadraphonic recording or reproducing156
- G11B 20/20Signal processing not specific to the method of recording or reproducing: for92
Recent patents
- Preamplifier for a writer of a hard disk drive with fast rise time6 Oct 2026US 12,755,760 B1Marvell Asia Pte Ltd
- Magnetic disk device, control method, and learning method8 Sep 2026US 12,731,614 B2Kabushiki Kaisha Toshiba
- Imaging device and imaging system8 Sep 2026US 12,731,619 B2Panasonic Intellectual Property Management Co., Ltd.
- Audio watermark processing method and apparatus, computer device, and storage medium18 Aug 2026US 12,711,971 B2Tencent Technology (Shenzhen) Company Limited
- Magnetic disk device and method18 Aug 2026US 12,711,984 B2Kabushiki Kaisha Toshiba
- Data storage device with deferred decoding of analog read signals8 Oct 2026US 2026/0311725 A1Western Digital Technologies, Inc.
- Hybrid Analog Digital Audio Format1 Oct 2026US 2026/0301769 A1Ceramic Data Solutions GmbH
- Storage medium, magnetic disk device, and data center system24 Sep 2026US 2026/0288607 A1Kabushiki Kaisha Toshiba
- Magnetic recording device24 Sep 2026US 2026/0290396 A1Kabushiki Kaisha Toshiba
- Magnetic disk device and data recording method24 Sep 2026US 2026/0290397 A1Kabushiki Kaisha Toshiba
Most cited
By later US patents
- System and method for synchronizing operations among a plurality of independently clocked digital data processing devices1,949US 8,234,395 B2Sonos, Inc. · 2012
- Enhanced raid write hole protection and recovery1,578US 5,774,643 ADigital Equipment Corporation · 1998
- Scheme for information dispersal and reconstruction1,530US 5,485,474 APresident and Fellows of Harvard College · 1996
- Cryptographic communications system and method1,449US 4,405,829 AMassachusetts Institute of Technology · 1983
- System for protecting the transmission of live data streams, and upon reception, for reconstructing the live data streams and recording them into files1,424US 7,024,609 B2Kencast, Inc. · 2006