G11B 20/10305
Signal quality assessment
Official title: {signal quality assessment}
G11B20/10305 (Signal quality assessment) appears on 756 US grants and 629 published applications in this corpus.
Search patents in G11B- Granted patents
- 756
- Published applications
- 629
- Assignees
- 173
- Inventors
- 1,131
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 2 | 2 |
| 2002 | 4 | 14 |
| 2003 | 7 | 18 |
| 2004 | 15 | 32 |
| 2005 | 10 | 47 |
| 2006 | 20 | 44 |
| 2007 | 25 | 39 |
| 2008 | 42 | 24 |
| 2009 | 18 | 35 |
| 2010 | 46 | 36 |
| 2011 | 54 | 51 |
| 2012 | 61 | 59 |
| 2013 | 78 | 36 |
| 2014 | 96 | 48 |
| 2015 | 62 | 29 |
| 2016 | 43 | 22 |
| 2017 | 26 | 10 |
| 2018 | 20 | 17 |
| 2019 | 29 | 16 |
| 2020 | 17 | 13 |
| 2021 | 16 | 8 |
| 2022 | 19 | 12 |
| 2023 | 10 | 6 |
| 2024 | 9 | 6 |
| 2025 | 7 | 2 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G11B 20/10398Jitter, timing deviations or phase and frequency errors313
- G11B 20/10388Control of the read or write heads148
- G11B 20/10361Digital demodulation process102
- G11B 20/10314Amplitude of the recorded or reproduced signal67
- G11B 20/10324Asymmetry of the recorded or reproduced waveform49
- G11B 20/10462Consistency with a reference waveform in a given time period35
- G11B 20/10472Derived from statistics of other quality measures30
- G11B 20/10351Baseline shift, dc content, bias27
Recent patents
- Magnetic disk device and DOL setting method28 Apr 2026US 12,614,566 B2Kabushiki Kaisha Toshiba
- Estimation and correction of eccentric phonograph record playback in digital audio recordings7 Apr 2026US 12,597,442 B2
- ML assisted dynamic decoding gear selection14 Oct 2025US 12,444,439 B2SanDisk Technologies LLC
- Harmonic sensor phase error detection for data storage devices29 Jul 2025US 12,374,362 B1Western Digital Technologies, Inc.
- Magnetic disk device22 Apr 2025US 12,282,672 B2Kabushiki Kaisha Toshiba
- Magnetic disk device and dol setting method13 Aug 2026US 2026/0237405 A1Kabushiki Kaisha Toshiba
- Estimation and correction of eccentric phonograph record playback in digital audio recordings12 Feb 2026US 2026/0045277 A1
- Disk device22 Jan 2026US 2026/0024553 A1Kabushiki Kaisha Toshiba
- Disk device and disk device control method6 Nov 2025US 2025/0342858 A1Kabushiki Kaisha Toshiba
- Magnetic disk device and dol setting method15 May 2025US 2025/0157488 A1Kabushiki Kaisha Toshiba
Most cited
By later US patents
- Disk drive comprising a dual read element and delay circuitry to improve read signal207US 8,139,301 B1Western Digital (Fremont), LLC · 2012
- Disk drive comprising a dual read element and delay circuitry to improve read signal156US 8,514,506 B1Western Digital (Fremont), LLC · 2013
- Audio data receiving apparatus, audio data receiving method, and audio data transmission and receiving system150US 8,751,026 B2Sony Corporation · 2014
- Disk drive margining read channel using predictable disturbance samples generated as a function of a written pattern141US 7,990,648 B1Western Digital Technologies, Inc. · 2011
- Parallel media defect scan in sector read140US 8,194,338 B1Western Digital Technologies, Inc. · 2012