G11B 20/1496
Characterised by the use of more than three levels
Official title: {characterised by the use of more than three levels}
G11B20/1496 (Characterised by the use of more than three levels) appears on 71 US grants and 45 published applications in this corpus.
Search patents in G11B- Granted patents
- 71
- Published applications
- 45
- Assignees
- 37
- Inventors
- 119
- Latest grant
- 6 Dec 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 3 |
| 2003 | 6 | 6 |
| 2004 | 1 | 5 |
| 2005 | 1 | 4 |
| 2006 | 5 | 5 |
| 2007 | 5 | 3 |
| 2008 | 5 | 3 |
| 2009 | 1 | 4 |
| 2010 | 4 | 6 |
| 2011 | 2 | 1 |
| 2012 | 6 | 1 |
| 2013 | 2 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Recording apparatus, recording method, reproduction apparatus, reproduction method, recording medium, encoding apparatus, and decoding apparatus6 Dec 2022US 11,521,651 B2Sony Corporation
- Storage device, controller, and recording and reproducing method8 Nov 2016US 9,489,977 B1Kabushiki Kaisha Toshiba
- Systems and methods for mis-correction correction in a data processing system3 Feb 2015US 8,949,704 B2LSI Corporation
- Signal processing device, signal processing method, and signal level display device5 Nov 2013US 8,577,944 B2Sony Corporation
- Clock-data recovery and method for binary signaling using low resolution ADC28 May 2013US 8,451,949 B2Realtek Semiconductor Corp.
- Recording apparatus, recording method, reproduction apparatus, reproduction method, recording medium, encoding apparatus, and decoding apparatus9 Dec 2021US 2021/0383835 A1Sony Corporation
- Data encoding method, computer readable recording medium, and data encoding device12 Jan 2017US 2017/0010583 A1Foundation of Soongsil University-Industry Cooperation
- Systems and Methods for Mis-Correction Correction in a Data Processing System26 Sep 2013US 2013/0254619 A1LSI Corporation
- Optical disk reproducing apparatus13 Sep 2012US 2012/0230173 A1
- Optical disk reproducing apparatus22 Sep 2011US 2011/0228662 A1Renesas Electronics Corporation
Most cited
By later US patents
- Coding method and apparatus using quaternary codes209US 5,331,320 AInternational Business Machines Corporation · 1994
- Multiple-values digital signal magnetic recording and reproducing apparatus using a QAM and PSK modulator, pilot signal and a viterbi decoder63US 5,818,653 ASamsung Electronics Co., Ltd. · 1998
- Method and apparatus for code conversion of binary to multilevel signals60US 4,408,189 ANorthern Telecom Limited · 1983
- M=10 (2,10), D=3.75 runlength limited code for multi-level data46US 6,150,964 ACalimetrics, Inc. · 2000
- Optical disc reader for reading multiple levels of pits on an optical disc38US 5,854,779 ACalimetrics, Inc. · 1998