H03G 3/34
Muting amplifier when no signal is present
H03G3/34 (Muting amplifier when no signal is present) appears on 902 US grants and 446 published applications in this corpus.
Search patents in H03G- Granted patents
- 902
- Published applications
- 446
- Assignees
- 379
- Inventors
- 1,446
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 31 | 0 |
| 1977 | 16 | 0 |
| 1978 | 20 | 0 |
| 1979 | 24 | 0 |
| 1980 | 32 | 0 |
| 1981 | 22 | 0 |
| 1982 | 25 | 0 |
| 1983 | 23 | 0 |
| 1984 | 20 | 0 |
| 1985 | 20 | 0 |
| 1986 | 13 | 0 |
| 1987 | 20 | 0 |
| 1988 | 13 | 0 |
| 1989 | 13 | 0 |
| 1990 | 24 | 0 |
| 1991 | 13 | 0 |
| 1992 | 12 | 0 |
| 1993 | 19 | 0 |
| 1994 | 23 | 0 |
| 1995 | 17 | 0 |
| 1996 | 15 | 0 |
| 1997 | 11 | 0 |
| 1998 | 17 | 0 |
| 1999 | 13 | 0 |
| 2000 | 17 | 0 |
| 2001 | 11 | 4 |
| 2002 | 22 | 8 |
| 2003 | 14 | 16 |
| 2004 | 14 | 17 |
| 2005 | 14 | 19 |
| 2006 | 11 | 15 |
| 2007 | 11 | 23 |
| 2008 | 6 | 26 |
| 2009 | 5 | 24 |
| 2010 | 15 | 18 |
| 2011 | 21 | 29 |
| 2012 | 30 | 23 |
| 2013 | 20 | 19 |
| 2014 | 16 | 19 |
| 2015 | 28 | 21 |
| 2016 | 26 | 17 |
| 2017 | 31 | 24 |
| 2018 | 20 | 17 |
| 2019 | 23 | 22 |
| 2020 | 24 | 21 |
| 2021 | 14 | 15 |
| 2022 | 12 | 17 |
| 2023 | 12 | 11 |
| 2024 | 16 | 9 |
| 2025 | 7 | 5 |
| 2026 | 6 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03G 3/348Muting in response to a mechanical action or to power supply variations254
- H03G 3/345Muting during a short period of time when noise pulses are detected245
- H03G 3/344Muting responsive to the amount of noise144
- H03G 3/341Muting when no signals or only weak signals are present133
- H03G 3/342Muting when some special characteristic of the signal is sensed which distinguishes110
Recent patents
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- Output drivers for audio amplifiers2 Jul 2026US 2026/0189200 A1Skyworks Solutions, Inc.
- Automatic volume control for game and chat audio4 Jun 2026US 2026/0155802 A1Voyetra Turtle Beach, Inc.
- Transmit signal squelch at symbol boundaries5 Mar 2026US 2026/0067138 A1Analog Devices International Unlimited Company
- Audio power amplifier circuit and duty cycle modulation circuit and noise suppression circuit thereof15 Jan 2026US 2026/0019056 A1Shanghai Sg Micro Co., Ltd.
Most cited
By later US patents
- Noise squelch circuit with adaptive noise shaping231US 5,303,406 AMotorola, Inc. · 1994
- Zero intermediate frequency noise blanker229US 5,212,827 AMotorola, Inc. · 1993
- Automatic volume attenuation for speech enabled devices218US 9,324,322 B1Amazon Technologies, Inc. · 2016
- Reconfigurable radio system architecture185US 6,091,765 AHarris Corporation · 2000
- Variable speaker muting based on received data184US 5,151,922 AMotorola, Inc. · 1992