G11B 7/08505
Methods for track change, selection or preliminary positioning by moving the head
Official title: {Methods for track change, selection or preliminary positioning by moving the head}
G11B7/08505 (Methods for track change, selection or preliminary positioning by moving the head) appears on 1,883 US grants and 1,046 published applications in this corpus.
Search patents in G11B- Granted patents
- 1,883
- Published applications
- 1,046
- Assignees
- 245
- Inventors
- 2,233
- Latest grant
- 12 May 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 8 | 0 |
| 1985 | 18 | 0 |
| 1986 | 17 | 0 |
| 1987 | 24 | 0 |
| 1988 | 38 | 0 |
| 1989 | 48 | 0 |
| 1990 | 30 | 0 |
| 1991 | 47 | 0 |
| 1992 | 78 | 0 |
| 1993 | 75 | 0 |
| 1994 | 48 | 0 |
| 1995 | 71 | 0 |
| 1996 | 47 | 0 |
| 1997 | 73 | 0 |
| 1998 | 106 | 0 |
| 1999 | 102 | 0 |
| 2000 | 81 | 0 |
| 2001 | 83 | 48 |
| 2002 | 66 | 134 |
| 2003 | 63 | 94 |
| 2004 | 93 | 107 |
| 2005 | 72 | 125 |
| 2006 | 102 | 93 |
| 2007 | 73 | 104 |
| 2008 | 49 | 79 |
| 2009 | 56 | 75 |
| 2010 | 73 | 64 |
| 2011 | 68 | 46 |
| 2012 | 56 | 23 |
| 2013 | 44 | 10 |
| 2014 | 23 | 21 |
| 2015 | 9 | 6 |
| 2016 | 6 | 5 |
| 2017 | 3 | 5 |
| 2018 | 4 | 3 |
| 2019 | 3 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Optical disc and optical disc device12 May 2020US 10,650,855 B2Mitsubishi Electric Corporation
- Optical disc apparatus27 Aug 2019US 10,395,689 B2Panasonic Intellectual Property Management Co., Ltd.
- Optical disc and optical disc device13 Aug 2019US 10,381,037 B2Mitsubishi Electric Corporation
- Optical recording medium having a plurality of recording layers capable of suppressing off-track12 Feb 2019US 10,204,652 B2Sony Corporation
- Quadrature track error signal for optical recording media and devices18 Sep 2018US 10,079,037 B2Oracle International Corporation
- Read head and methods for reading multilayer optical data storage media7 Nov 2024US 2024/0371068 A1Microsoft Technology Licensing, 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 disc and optical disc device24 Oct 2019US 2019/0325909 A1Mitsubishi Electric Corporation
- Optical disc and optical disc device20 Sep 2018US 2018/0268857 A1Mitsubishi Electric Corporation
Most cited
By later US patents
- Multi-layered recording disk and recording/reproducing system using the same155US 5,608,715 APioneer Electronic Corporation · 1997
- Compound objective lens having two focal points144US 5,446,565 AMatsushita Electric Industrial Co., Ltd. · 1995
- Disc track servo system133US 4,142,209 ARCA Corporation · 1979
- Optical recording/reproducing medium and apparatus using land and groove encoded information signals and identification signals including position information115US 5,452,284 AMatsushita Electric Industrial Co., Ltd. · 1995
- Computing apparatus configured for partitioned processing115US 5,768,613 AAdvanced Micro Devices, Inc. · 1998