G11B 20/00992
Circuits for stereophonic or quadraphonic recording or reproducing
Official title: {Circuits for stereophonic or quadraphonic recording or reproducing}
G11B20/00992 (Circuits for stereophonic or quadraphonic recording or reproducing) appears on 156 US grants and 62 published applications in this corpus.
Search patents in G11B- Granted patents
- 156
- Published applications
- 62
- Assignees
- 74
- Inventors
- 270
- Latest grant
- 17 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 8 | 0 |
| 1997 | 9 | 0 |
| 1998 | 12 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 2 |
| 2002 | 2 | 4 |
| 2003 | 5 | 4 |
| 2004 | 6 | 9 |
| 2005 | 5 | 7 |
| 2006 | 4 | 5 |
| 2007 | 5 | 3 |
| 2008 | 6 | 3 |
| 2009 | 0 | 1 |
| 2010 | 1 | 6 |
| 2011 | 1 | 2 |
| 2012 | 3 | 1 |
| 2013 | 2 | 0 |
| 2014 | 4 | 3 |
| 2015 | 2 | 2 |
| 2016 | 2 | 0 |
| 2017 | 1 | 2 |
| 2018 | 0 | 2 |
| 2019 | 3 | 2 |
| 2020 | 1 | 2 |
| 2021 | 1 | 0 |
| 2022 | 1 | 1 |
| 2023 | 2 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Orientation based microphone selection apparatus17 Jun 2025US 12,333,208 B2Nokia Technologies Oy
- Orientation based microphone selection apparatus19 Dec 2023US 11,847,376 B2Nokia Technologies Oy
- Multi-channel binaural recording and dynamic playback6 Jun 2023US 11,671,782 B2Huddly AS
- Orientation based microphone selection apparatus4 Jan 2022US 11,216,239 B2Nokia Technologies Oy
- Apparatus, electronic device, system, method and computer program for capturing audio signals27 Apr 2021US 10,991,392 B2Nokia Technologies Oy
- Orientation based microphone selection apparatus7 Mar 2024US 2024/0078075 A1Nokia Technologies Oy
- Orientation Based Microphone Selection Apparatus28 Apr 2022US 2022/0129233 A1Nokia Technologies Oy
- Orientation Based Microphone Selection Apparatus16 Jul 2020US 2020/0225905 A1Nokia Technologies Oy
- Multi-channel binaural recording and dynamic playback12 Mar 2020US 2020/0084566 A1Huddly AS
- Acoustic Holographic Recording and Reproduction System Using Meta Material Layers26 Sep 2019US 2019/0295592 A1Acoustix Vr Inc.
Most cited
By later US patents
- Audio signal processing apparatus and audio signal processing method300US 8,855,319 B2Mediatek Inc. · 2014
- Subband coded digital transmission system using some composite signals222US 5,606,618 AU. S. Philips Corporation · 1997
- Use of voice-to-remaining audio (VRA) in consumer applications202US 6,311,155 B1Hearing Enhancement Company, LLC · 2001
- Digital sub-band transmission system with transmission of an additional signal191US 5,530,655 AU. S. Philips Corporation · 1996
- Digital data converter166US 5,155,743 ANuance DesignWorks, Inc. · 1992