G11B 20/1423
Code representation depending on subsequent bits
Official title: {Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code}
G11B20/1423 (Code representation depending on subsequent bits) appears on 1,577 US grants and 884 published applications in this corpus.
Search patents in G11B- Granted patents
- 1,577
- Published applications
- 884
- Assignees
- 281
- Inventors
- 1,693
- Latest grant
- 20 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 15 | 0 |
| 1978 | 3 | 0 |
| 1979 | 6 | 0 |
| 1980 | 15 | 0 |
| 1981 | 8 | 0 |
| 1982 | 19 | 0 |
| 1983 | 15 | 0 |
| 1984 | 19 | 0 |
| 1985 | 36 | 0 |
| 1986 | 24 | 0 |
| 1987 | 19 | 0 |
| 1988 | 11 | 0 |
| 1989 | 22 | 0 |
| 1990 | 11 | 0 |
| 1991 | 10 | 0 |
| 1992 | 22 | 0 |
| 1993 | 25 | 0 |
| 1994 | 33 | 0 |
| 1995 | 34 | 0 |
| 1996 | 52 | 0 |
| 1997 | 54 | 0 |
| 1998 | 65 | 0 |
| 1999 | 58 | 0 |
| 2000 | 64 | 0 |
| 2001 | 74 | 27 |
| 2002 | 72 | 92 |
| 2003 | 85 | 81 |
| 2004 | 66 | 103 |
| 2005 | 54 | 104 |
| 2006 | 112 | 93 |
| 2007 | 114 | 152 |
| 2008 | 95 | 85 |
| 2009 | 60 | 49 |
| 2010 | 50 | 29 |
| 2011 | 45 | 18 |
| 2012 | 30 | 10 |
| 2013 | 23 | 8 |
| 2014 | 10 | 8 |
| 2015 | 7 | 3 |
| 2016 | 9 | 4 |
| 2017 | 7 | 5 |
| 2018 | 3 | 2 |
| 2019 | 6 | 5 |
| 2020 | 4 | 2 |
| 2021 | 1 | 1 |
| 2022 | 2 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Decision feedback equalization in semiconductor devices20 May 2025US 12,308,049 B2Macronix International Co., Ltd.
- Decoding device, decoding method, program, encoding device, and encoding method7 Jan 2025US 12,190,894 B2Sony Group Corporation
- Recording apparatus, recording method, reproduction apparatus, reproduction method, recording medium, encoding apparatus, and decoding apparatus6 Dec 2022US 11,521,651 B2Sony Corporation
- Partial reverse concatenation for data storage devices using composite codes5 Jul 2022US 11,381,258 B2Awemane Ltd.
- Constant-density writing for magnetic storage media6 Apr 2021US 10,971,187 B2Marvell Asia Pte Ltd
- Decoding device, decoding method, program, encoding device, and encoding method22 May 2025US 2025/0166635 A1Sony Group Corporation
- Decision feedback equalization in semiconductor devices26 Dec 2024US 2024/0428822 A1Macronix International Co., Ltd.
- Decoding device, decoding method, program, encoding device, and encoding method11 May 2023US 2023/0145547 A1Sony Group Corporation
- Recording apparatus, recording method, reproduction apparatus, reproduction method, recording medium, encoding apparatus, and decoding apparatus9 Dec 2021US 2021/0383835 A1Sony Corporation
- Constant-Density Writing for Magnetic Storage Media17 Sep 2020US 2020/0294549 A1Marvell Asia Pte Ltd
Most cited
By later US patents
- 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
- Sub-sampled discrete time read channel for computer storage systems169US 5,802,118 ACirrus Logic, Inc. · 1998
- Disk drive employing vector addition of primary phase write clock signals for generating secondary phase write clock signal166US 6,337,778 B12002
- Thermal asperity compensation using multiple sync marks for retroactive and split segment data synchronization in a magnetic disk storage system155US 5,844,920 ACirrus Logic, Inc. · 1998
- Phase locked loop employing a fractional frequency synthesizer as a variable oscillator155US 6,710,951 B1Western Digital Technologies, Inc. · 2004