G11B 7/094
Methods and circuits for servo offset compensation
Official title: {Methods and circuits for servo offset compensation}
G11B7/094 (Methods and circuits for servo offset compensation) appears on 824 US grants and 535 published applications in this corpus.
Search patents in G11B- Granted patents
- 824
- Published applications
- 535
- Assignees
- 139
- Inventors
- 1,246
- Latest grant
- 14 Nov 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 6 | 0 |
| 1987 | 10 | 0 |
| 1988 | 10 | 0 |
| 1989 | 23 | 0 |
| 1990 | 11 | 0 |
| 1991 | 12 | 0 |
| 1992 | 35 | 0 |
| 1993 | 27 | 0 |
| 1994 | 16 | 0 |
| 1995 | 17 | 0 |
| 1996 | 27 | 0 |
| 1997 | 26 | 0 |
| 1998 | 40 | 0 |
| 1999 | 30 | 0 |
| 2000 | 30 | 0 |
| 2001 | 36 | 24 |
| 2002 | 43 | 81 |
| 2003 | 49 | 52 |
| 2004 | 33 | 39 |
| 2005 | 37 | 68 |
| 2006 | 57 | 33 |
| 2007 | 39 | 49 |
| 2008 | 28 | 51 |
| 2009 | 23 | 42 |
| 2010 | 37 | 30 |
| 2011 | 39 | 21 |
| 2012 | 24 | 10 |
| 2013 | 17 | 9 |
| 2014 | 11 | 6 |
| 2015 | 6 | 8 |
| 2016 | 9 | 7 |
| 2017 | 4 | 3 |
| 2018 | 4 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Composite data recovery procedure14 Nov 2023US 11,817,124 B2Seagate Technology LLC
- Compensating tracking error signal offset in optical tape storage systems28 May 2019US 10,304,491 B2Oracle International Corporation
- Servo pattern for precise tracking in optical tapes16 Oct 2018US 10,102,875 B1Oracle International Corporation
- Compensating tracking error signal offset in optical tape storage systems1 May 2018US 9,959,900 B1Oracle International Corporation
- Recorder and player apparatus stably keeping track of recording medium6 Mar 2018US 9,911,449 B2Panasonic Intellectual Property Management Co., Ltd.
- Composite data recovery procedure8 Jun 2023US 2023/0178109 A1Seagate Technology LLC
- Compensating tracking error signal offset in optical tape storage systems31 Jan 2019US 2019/0035426 A1Oracle International Corporation
- Recorder and player apparatus stably keeping track of recording medium14 Sep 2017US 2017/0263280 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
Most cited
By later US patents
- Apparatus and record carrier for optical disc memory with correction pattern and master disc cutting apparatus97US 4,949,331 AHitachi, Ltd. · 1990
- Optical disc and optical disc driving apparatus90US 5,933,410 AMatsushita Electric Industrial Co., Ltd. · 1999
- 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
- Optical memory system providing improved focusing control and improved beam combining and separating apparatus79US 4,621,353 ABurroughs Corporation · 1986
- Optical recording and reproducing apparatus for tracking wobbling guide grooves78US 5,434,834 AMitsubishi Denki Kabushiki Kaisha · 1995