G11B 7/0956
To compensate for tilt, skew, warp or inclination of the disc, i.e.
Official title: {to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc}
G11B7/0956 (To compensate for tilt, skew, warp or inclination of the disc, i.e.) appears on 932 US grants and 818 published applications in this corpus.
Search patents in G11B- Granted patents
- 932
- Published applications
- 818
- Assignees
- 169
- Inventors
- 1,404
- Latest grant
- 4 Feb 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 13 | 0 |
| 1988 | 11 | 0 |
| 1989 | 9 | 0 |
| 1990 | 1 | 0 |
| 1991 | 9 | 0 |
| 1992 | 14 | 0 |
| 1993 | 8 | 0 |
| 1994 | 6 | 0 |
| 1995 | 9 | 0 |
| 1996 | 14 | 0 |
| 1997 | 13 | 0 |
| 1998 | 32 | 0 |
| 1999 | 30 | 0 |
| 2000 | 35 | 0 |
| 2001 | 35 | 26 |
| 2002 | 44 | 91 |
| 2003 | 52 | 79 |
| 2004 | 60 | 95 |
| 2005 | 41 | 128 |
| 2006 | 75 | 90 |
| 2007 | 80 | 76 |
| 2008 | 73 | 71 |
| 2009 | 61 | 51 |
| 2010 | 56 | 36 |
| 2011 | 59 | 29 |
| 2012 | 36 | 13 |
| 2013 | 23 | 16 |
| 2014 | 3 | 6 |
| 2015 | 13 | 6 |
| 2016 | 3 | 3 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Measurement apparatus for determining a velocity of a fluid27 Aug 2026US 2026/0253613 A1Airbus Helicopters Deutschland GmbH
- Patterned bit in error measurement apparatus and method1 Mar 2018US 2018/0060161 A1Seagate Technology LLC
- Optical disc apparatus and control method thereof29 Sep 2016US 2016/0284376 A1Samsung Electronics Co., Ltd.
- Method for determining phase difference of tracking error signal11 Feb 2016US 2016/0042758 A1Quanta Storage Inc.
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Most cited
By later US patents
- Method and apparatus for composite tracking servo system with track offset correction and rotary optical disc having at least one correction mark for correcting track offset87US 4,748,609 AHitachi, Ltd. · 1988
- Composite tracking servo system for optical disc apparatus with track offset correction72US 4,866,688 AHitachi, Ltd. · 1989
- Method and apparatus for composite wobbled and push-pull tracking servo system69US 4,707,816 AHitachi, Ltd. · 1987
- Optical pickup with a compact design66US 5,724,337 ATDK Corporation · 1998
- Servo control apparatus for controlling position of device59US 5,896,353 APioneer Electronic Corporation · 1999