G11B 5/59677
With optical servo tracking
Official title: {with optical servo tracking}
G11B5/59677 (With optical servo tracking) appears on 140 US grants and 42 published applications in this corpus.
Search patents in G11B- Granted patents
- 140
- Published applications
- 42
- Assignees
- 54
- Inventors
- 289
- Latest grant
- 15 Sep 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 9 | 0 |
| 1995 | 3 | 0 |
| 1996 | 8 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 10 | 0 |
| 2000 | 8 | 0 |
| 2001 | 9 | 6 |
| 2002 | 8 | 10 |
| 2003 | 4 | 5 |
| 2004 | 15 | 3 |
| 2005 | 8 | 3 |
| 2006 | 4 | 3 |
| 2007 | 2 | 1 |
| 2008 | 3 | 2 |
| 2009 | 3 | 2 |
| 2010 | 4 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 1 | 2 |
| 2020 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Servo zone transition optimization for disk drives15 Sep 2020US 10,777,224 B2Seagate Technology LLC
- Apparatus capable of determining deviation amount between magnetic head and magnetic tape based on reading servo pattern25 Aug 2020US 10,755,735 B2FUJIFILM Corporation
- Servo zone transition optimization for magnetic disk recording devices8 Oct 2019US 10,438,620 B1Seagate Technology LLC
- Data storage device using programmable deglitch window to detect saturation of VCM current control23 Oct 2018US 10,109,308 B1Western Digital Technologies, Inc.
- Data storage device compensating for hysteretic response of microactuator6 Oct 2015US 9,153,283 B1Western Digital Technologies, Inc.
- Magnetic tape apparatus2 Jan 2020US 2020/0005820 A1FUJIFILM Corporation
- Servo zone transition optimization19 Dec 2019US 2019/0385640 A1Seagate Technology LLC
- Servo zone transition optimization for magnetic disk recording devices26 Sep 2019US 2019/0295579 A1Seagate Technology LLC
- Information device21 Aug 2014US 2014/0233362 A1Panasonic Corporation
- Thermally-assisted recording (tar) patterned-media disk drive with optical detection of write synchronization and servo fields5 Apr 2012US 2012/0082015 A1Hitachi Global Storage Technologies Netherlands B. V.
Most cited
By later US patents
- Disk drive comprising an optical sensor for vibration mode compensation117US 7,365,932 B1Western Digital Technologies, Inc. · 2008
- Method for forming a servo pattern on a magnetic tape113US 7,029,726 B1Quantum Corporation · 2006
- Recording and reproducing apparatus101US 5,473,584 AMatsushita Electric Industrial Co., Ltd. · 1995
- Rotating rigid disk data storage device78US 4,516,177 AQuantum Corporation · 1985
- Magnetic information media storage with optical servo tracks70US 4,961,123 AInsite Peripherals, Inc. · 1990