H03K 2217/94026
Automatic threshold calibration
Official title: Automatic threshold calibration; e.g. threshold automatically adapts to ambient conditions or follows variation of input
H03K2217/94026 (Automatic threshold calibration) appears on 159 US grants and 171 published applications in this corpus.
Search patents in H03K- Granted patents
- 159
- Published applications
- 171
- Assignees
- 132
- Inventors
- 360
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
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| 1981 | 1 | 0 |
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| 1997 | 2 | 0 |
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| 1999 | 1 | 0 |
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| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 3 | 2 |
| 2004 | 2 | 2 |
| 2005 | 2 | 4 |
| 2006 | 1 | 1 |
| 2007 | 1 | 3 |
| 2008 | 1 | 6 |
| 2009 | 2 | 7 |
| 2010 | 5 | 4 |
| 2011 | 5 | 3 |
| 2012 | 10 | 14 |
| 2013 | 2 | 5 |
| 2014 | 7 | 11 |
| 2015 | 6 | 8 |
| 2016 | 12 | 8 |
| 2017 | 13 | 11 |
| 2018 | 8 | 13 |
| 2019 | 22 | 15 |
| 2020 | 9 | 11 |
| 2021 | 12 | 10 |
| 2022 | 4 | 9 |
| 2023 | 13 | 10 |
| 2024 | 7 | 7 |
| 2025 | 6 | 4 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Baseline calculation for sensor system4 Nov 2025US 12,463,643 B2Cirrus Logic, Inc.
- Proximity detection method and circuit thereof14 Oct 2025US 12,445,129 B2Sensortek Technology Corp.
- Proximity switch and method for operating a proximity switch23 Sep 2025US 12,425,025 B2Turck Holding GmbH
- Device for detecting user operation on electrocapacitive sensor23 Jul 2026US 2026/0213750 A1Alps Alpine Co., Ltd.
- Capacitive Sensor Device with Drift Compensation29 Jan 2026US 2026/0029253 A1Semtech Corporation
- Method for setting temperature compensation for a plurality of proximity sensors of the same kind18 Sep 2025US 2025/0290775 A1Optosys SA
- Inductive proximity sensor with temperature stabilization4 Sep 2025US 2025/0277679 A1Optosys SA
- Drift suppression method, proximity sensor and wireless device4 Sep 2025US 2025/0277681 A1Semtech Corporation
Most cited
By later US patents
- Touch sensor and control circuit therefor717US 5,594,222 AIntegrated Controls · 1997
- Capacitive sensor systems and methods with increased resolution and automatic calibration277US 6,940,291 B1iRobot Corporation · 2005
- Capacitive sensor systems and methods with increased resolution and automatic calibration261US 6,661,239 B1iRobot Corporation · 2003
- Touch detection techniques for capacitive touch sense systems201US 8,040,142 B1Cypress Semiconductor Corporation · 2011
- Proximity/touch detector and calibration circuit154US 6,583,676 B2Apple Computer, Inc. · 2003