G11B 7/093
For focusing and tracking
Official title: {for focusing and tracking (G11B7/0932 - G11B7/0937 take precedence)}
G11B7/093 (For focusing and tracking) appears on 277 US grants and 91 published applications in this corpus.
Search patents in G11B- Granted patents
- 277
- Published applications
- 91
- Assignees
- 77
- Inventors
- 447
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 7 | 0 |
| 1985 | 4 | 0 |
| 1986 | 9 | 0 |
| 1987 | 6 | 0 |
| 1988 | 9 | 0 |
| 1989 | 5 | 0 |
| 1990 | 8 | 0 |
| 1991 | 12 | 0 |
| 1992 | 7 | 0 |
| 1993 | 9 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 15 | 0 |
| 1997 | 16 | 0 |
| 1998 | 19 | 0 |
| 1999 | 23 | 0 |
| 2000 | 17 | 0 |
| 2001 | 15 | 9 |
| 2002 | 8 | 7 |
| 2003 | 9 | 24 |
| 2004 | 14 | 13 |
| 2005 | 7 | 4 |
| 2006 | 8 | 7 |
| 2007 | 10 | 9 |
| 2008 | 4 | 4 |
| 2009 | 7 | 2 |
| 2010 | 2 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 2 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 1 |
| 2016 | 4 | 2 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 1 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical element driving mechanism8 Sep 2026US 12,730,357 B2Actutek Corporation
- Optical element driving mechanism25 Feb 2025US 12,235,571 B2TDK Taiwan Corp.
- Radial servo device for super-resolution optical disc and servo control method therefor18 Jan 2022US 11,227,632 B2Shanghai Institute of Optics And Fine Mechanics, Chinese Academy of Sciences
- Optical encoder system and method26 Oct 2021US 11,156,481 B2
- Optical encoder system and method8 Sep 2020US 10,768,022 B2
- Optical element driving mechanism14 Jul 2022US 2022/0221680 A1TDK Taiwan Corp.
- Optical element driving mechanism14 Jul 2022US 2022/0221685 A1TDK Taiwan Corp.
- Radial servo device for super-resolution optical disc and servo control method therefor20 May 2021US 2021/0151079 A1Shanghai Institute of Optics And Fine Mechanics, Chinese Academy of Sciences
- Optical encoder system and method19 Nov 2020US 2020/0363240 A1
- Optical encoder system and method27 Jun 2019US 2019/0195662 A1
Most cited
By later US patents
- Method and apparatus for moving carriage assembly from initial position to target position and optical disc system including same92US 6,741,529 B1Discovision Associates · 2004
- Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal84US 5,729,511 ADiscovision Associates · 1998
- Servo control system for information storage device79US 5,875,158 ADiscovision Associates · 1999
- Isolation apparatus for use in disc drive system to mitigate effects of undesired mechanical forces and disc drive system including same73US 6,122,232 ADiscovision Associates · 2000
- Optical pickup with a compact design66US 5,724,337 ATDK Corporation · 1998