G11B 7/0917
Focus-error methods other than those covered by g11b7/0909 - g11b7/0916
Official title: {Focus-error methods other than those covered by G11B7/0909 - G11B7/0916}
G11B7/0917 (Focus-error methods other than those covered by g11b7/0909 - g11b7/0916) appears on 222 US grants and 47 published applications in this corpus.
Search patents in G11B- Granted patents
- 222
- Published applications
- 47
- Assignees
- 74
- Inventors
- 305
- Latest grant
- 30 Jan 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 8 | 0 |
| 1978 | 7 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 7 | 0 |
| 1983 | 6 | 0 |
| 1984 | 8 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 8 | 0 |
| 1988 | 4 | 0 |
| 1989 | 10 | 0 |
| 1990 | 4 | 0 |
| 1991 | 12 | 0 |
| 1992 | 12 | 0 |
| 1993 | 7 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 8 | 0 |
| 1997 | 8 | 0 |
| 1998 | 10 | 0 |
| 1999 | 6 | 0 |
| 2000 | 9 | 0 |
| 2001 | 6 | 0 |
| 2002 | 3 | 2 |
| 2003 | 2 | 0 |
| 2004 | 4 | 0 |
| 2005 | 1 | 4 |
| 2006 | 0 | 3 |
| 2007 | 1 | 0 |
| 2008 | 1 | 8 |
| 2009 | 4 | 9 |
| 2010 | 4 | 2 |
| 2011 | 7 | 5 |
| 2012 | 4 | 0 |
| 2013 | 2 | 4 |
| 2014 | 4 | 4 |
| 2015 | 4 | 0 |
| 2016 | 2 | 2 |
| 2017 | 1 | 2 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Detection apparatus, optical drive, and detection method30 Jan 2024US 11,887,624 B2Huawei Technologies Co., Ltd.
- Optical information processing device29 Dec 2020US 10,878,847 B2Panasonic Intellectual Property Management Co., Ltd.
- Optical disc apparatus controlling irradiation position based on cross-correlation value between reproduction signal and decoded signal5 Sep 2017US 9,754,619 B1Panasonic Intellectual Property Management Co., Ltd.
- 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
- Detection Apparatus, Optical Drive, and Detection Method18 Aug 2022US 2022/0262398 A1Huawei Technologies Co., Ltd.
- Optical information processing device7 Nov 2019US 2019/0341072 A1Panasonic Intellectual Property Management Co., Ltd.
- Optical disc apparatus controlling irradiation position based on cross-correlation value between reproduction signal and decoded signal7 Sep 2017US 2017/0256280 A1Panasonic Intellectual Property Management Co., Ltd.
- Servo Processor Receiving Photodetector Signals25 May 2017US 2017/0148478 A1Optical Devices, LLC
- Servo Processor Receiving Photodetector Signals19 May 2016US 2016/0140995 A1Optical Devices, LLC
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
- Colpitts type oscillator having reduced ringing and improved optical disc system utilizing same62US 5,748,578 ADiscovision Associates · 1998