G11B 20/1813
By adding special bits or symbols to the coded information
Official title: {by adding special bits or symbols to the coded information (G11B20/1809 takes precedence)}
G11B20/1813 (By adding special bits or symbols to the coded information) appears on 200 US grants and 75 published applications in this corpus.
Search patents in G11B- Granted patents
- 200
- Published applications
- 75
- Assignees
- 59
- Inventors
- 297
- Latest grant
- 29 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 0 | 0 |
| 1989 | 5 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 6 | 0 |
| 1998 | 10 | 0 |
| 1999 | 17 | 0 |
| 2000 | 16 | 0 |
| 2001 | 10 | 2 |
| 2002 | 8 | 9 |
| 2003 | 8 | 8 |
| 2004 | 7 | 4 |
| 2005 | 2 | 7 |
| 2006 | 10 | 15 |
| 2007 | 1 | 15 |
| 2008 | 17 | 4 |
| 2009 | 5 | 3 |
| 2010 | 4 | 2 |
| 2011 | 1 | 0 |
| 2012 | 5 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 2 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 4 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Data storage device configuration using mutual information29 Jul 2025US 12,374,365 B2Western Digital Technologies, Inc.
- Modulation code and ECC rate optimization using symbol context mutual information27 May 2025US 12,315,534 B2Western Digital Technologies, Inc.
- Header decoding mechanism for tape storage23 Apr 2024US 11,967,342 B2International Business Machines Corporation
- Method and apparatus for reading a disc17 Nov 2015US 9,191,031 B2Marvell World Trade Ltd.
- Method and apparatus for reading a disc10 Feb 2015US 8,954,819 B2Marvell World Trade Ltd.
- Data Storage Device Configuration Using Mutual Information8 Aug 2024US 2024/0265943 A1Western Digital Technologies, Inc.
- Modulation Code and ECC Rate Optimization Using Symbol Context Mutual Information8 Aug 2024US 2024/0265948 A1Western Digital Technologies, Inc.
- Header decoding mechanism for tape storage14 Mar 2024US 2024/0087604 A1International Business Machines Corporation
- Header encoding mechanism for tape storage14 Mar 2024US 2024/0087605 A1International Business Machines Corporation
- Method and apparatus for reading a disc4 Jun 2015US 2015/0155887 A1Marvell World Trade Ltd.
Most cited
By later US patents
- Embedded signalling739US 5,319,735 ABolt Beranek and Newman Inc. · 1994
- 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
- Digital data recording/playback system utilizing EEPROM and ROM memories as a storage medium128US 5,535,356 ASamsung Electronics Co., Ltd. · 1996
- Method and apparatus for processing a digital color video signal126US 4,364,081 ASony Corporation · 1982
- Apparatus for magnetically recording digital data97US 5,416,651 ASony Corporation · 1995