G11B 7/08541
Involving track counting to determine position
Official title: {involving track counting to determine position}
G11B7/08541 (Involving track counting to determine position) appears on 341 US grants and 136 published applications in this corpus.
Search patents in G11B- Granted patents
- 341
- Published applications
- 136
- Assignees
- 89
- Inventors
- 423
- Latest grant
- 12 Feb 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 9 | 0 |
| 1992 | 8 | 0 |
| 1993 | 14 | 0 |
| 1994 | 16 | 0 |
| 1995 | 13 | 0 |
| 1996 | 15 | 0 |
| 1997 | 21 | 0 |
| 1998 | 26 | 0 |
| 1999 | 25 | 0 |
| 2000 | 23 | 0 |
| 2001 | 16 | 9 |
| 2002 | 15 | 32 |
| 2003 | 11 | 20 |
| 2004 | 24 | 12 |
| 2005 | 18 | 22 |
| 2006 | 23 | 10 |
| 2007 | 3 | 10 |
| 2008 | 8 | 2 |
| 2009 | 8 | 4 |
| 2010 | 6 | 3 |
| 2011 | 4 | 1 |
| 2012 | 3 | 2 |
| 2013 | 4 | 1 |
| 2014 | 1 | 1 |
| 2015 | 2 | 0 |
| 2016 | 2 | 2 |
| 2017 | 0 | 2 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Optical recording medium having a plurality of recording layers capable of suppressing off-track12 Feb 2019US 10,204,652 B2Sony Corporation
- Optical recording medium having a plurality of recording layers capable of suppressing off-track6 Mar 2018US 9,911,451 B2Sony Corporation
- Servo processor receiving photodetector signals6 Dec 2016US 9,514,777 B2Optical Devices, LLC
- Servo processor receiving photodetector signals26 Jan 2016US 9,245,569 B1Optical Devices, LLC
- Servo processor receiving photodetector signals11 Aug 2015US 9,105,281 B2Optical Devices, LLC
- Multi-channel multiplexing method and device for disc storage medium27 Oct 2022US 2022/0343947 A1Amethystum Storage Technology Co., Ltd.
- Method and device for accurately detecting and controlling position of optical head and optical disk22 Jul 2021US 2021/0225398 A1Amethystum Storage Technology Co., Ltd.
- Optical recording medium12 Jul 2018US 2018/0197572 A1Sony Corporation
- Servo Processor Receiving Photodetector Signals25 May 2017US 2017/0148478 A1Optical Devices, LLC
- Optical recording medium12 Jan 2017US 2017/0011767 A1Sony Corporation
Most cited
By later US patents
- Method and apparatus for information retrieval from an optically readable storage medium87US 4,375,091 ADiscovision Associates · 1983
- Optical disc access method and optical disk storage using coarse and fine actuators82US 4,866,687 AHitachi, Ltd. · 1989
- Transducer positioning servo mechanisms employing digital and analog circuits72US 4,914,725 AInternational Business Machines Corporation · 1990
- Apparatus for seeking a track of an optical disk in which information is recorded71US 4,989,190 AOki Electric Industry Co., Ltd. · 1991
- Accessing method and apparatus for use in hybrid optical recording device60US 5,841,739 ASony Corporation · 1998