G11B 15/46
Controlling, regulating, or indicating speed
Official title: Controlling, regulating, or indicating speed {(dependent on position of tape in reserve, loop G11B15/56, G11B15/58)}
G11B15/46 (Controlling, regulating, or indicating speed) appears on 1,450 US grants and 195 published applications in this corpus.
Search patents in G11B- Granted patents
- 1,450
- Published applications
- 195
- Assignees
- 211
- Inventors
- 1,687
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 26 | 0 |
| 1977 | 27 | 0 |
| 1978 | 34 | 0 |
| 1979 | 15 | 0 |
| 1980 | 18 | 0 |
| 1981 | 17 | 0 |
| 1982 | 34 | 0 |
| 1983 | 28 | 0 |
| 1984 | 27 | 0 |
| 1985 | 36 | 0 |
| 1986 | 38 | 0 |
| 1987 | 46 | 0 |
| 1988 | 43 | 0 |
| 1989 | 59 | 0 |
| 1990 | 42 | 0 |
| 1991 | 47 | 0 |
| 1992 | 44 | 0 |
| 1993 | 47 | 0 |
| 1994 | 73 | 0 |
| 1995 | 61 | 0 |
| 1996 | 57 | 0 |
| 1997 | 82 | 0 |
| 1998 | 93 | 0 |
| 1999 | 65 | 0 |
| 2000 | 85 | 0 |
| 2001 | 57 | 18 |
| 2002 | 41 | 24 |
| 2003 | 24 | 20 |
| 2004 | 25 | 24 |
| 2005 | 19 | 10 |
| 2006 | 23 | 10 |
| 2007 | 18 | 3 |
| 2008 | 8 | 18 |
| 2009 | 3 | 10 |
| 2010 | 10 | 5 |
| 2011 | 9 | 1 |
| 2012 | 7 | 4 |
| 2013 | 3 | 2 |
| 2014 | 11 | 13 |
| 2015 | 11 | 5 |
| 2016 | 6 | 4 |
| 2017 | 3 | 2 |
| 2018 | 3 | 4 |
| 2019 | 6 | 2 |
| 2020 | 5 | 4 |
| 2021 | 3 | 4 |
| 2022 | 4 | 4 |
| 2023 | 3 | 3 |
| 2024 | 2 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G11B 15/467In arrangements for recording or reproducing wherein both record carriers and heads827
- G11B 15/54By stroboscope187
- G11B 15/48Starting166
- G11B 15/52By using signals recorded on, or derived from, record carrier160
- G11B 15/50By mechanical linkage113
- G11B 15/463By using pilot tracking tones embedded in binary coded signals54
Recent patents
- Enhanced dynamic braking algorithm for tape storage device15 Sep 2026US 12,738,297 B2International Business Machines Corporation
- Restricted transport storage cartridges27 May 2025US 12,314,612 B2Hewlett Packard Enterprise Development LP
- Split actuator drive that limits slew rate of aggressor VCM to reduce victim disturbances19 Nov 2024US 12,148,456 B2Kabushiki Kaisha Toshiba
- System and method for conditioning new LTO media12 Mar 2024US 11,929,092 B2Quantum Corporation
- Tape drive tension management8 Aug 2023US 11,721,362 B2International Business Machines Corporation
- Enhanced dynamic braking algorithm for tape storage device16 Jan 2025US 2025/0022484 A1International Business Machines Corporation
- Split actuator drive that limits slew rate of aggressor vcm to reduce victim disturbances27 Jul 2023US 2023/0238024 A1Kabushiki Kaisha Toshiba
- Tape drive tension management15 Jun 2023US 2023/0186949 A1International Business Machines Corporation
- Split actuator drive that limits slew rate of aggressor vcm to reduce victim disturbances2 Mar 2023US 2023/0061685 A1Kabushiki Kaisha Toshiba
- Tape Head Design Having Same Gap Verify Capabilities29 Dec 2022US 2022/0415355 A1Western Digital Technologies, Inc.
Most cited
By later US patents
- Digital video recorder compatible receiver with trick play image enhancement527US 5,377,051 AHitachi America, Ltd. · 1994
- Recorder for cardiac signals with manually actuated event marking213US 4,123,785 ADel Mar Avionics · 1978
- Video recording device compatible transmitter182US 5,805,762 AHitachi America, Ltd. · 1998
- Digital video decoder for decoding digital high definition and/or digital standard definition television signals177US 5,614,952 AHitachi America, Ltd. · 1997
- Disk drive employing power source modulation for reducing power consumption168US 6,285,521 B1Western Digital Technologies, Inc. · 2001