H04H 40/81
For stereo-monaural switching
Official title: for stereo-monaural switching
H04H40/81 (For stereo-monaural switching) appears on 31 US grants and 15 published applications in this corpus.
Search patents in H04H- Granted patents
- 31
- Published applications
- 15
- Assignees
- 22
- Inventors
- 50
- Latest grant
- 1 Dec 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 2 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 3 |
| 2010 | 0 | 0 |
| 2011 | 2 | 1 |
| 2012 | 5 | 2 |
| 2013 | 2 | 1 |
| 2014 | 1 | 2 |
| 2015 | 6 | 1 |
| 2016 | 3 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Vehicle infotainment apparatus and method for controlling the same1 Dec 2020US 10,855,386 B1Hyundai Motor Company
- Audio signal of an FM stereo radio receiver by using parametric stereo23 Jan 2018US 9,877,132 B2Dolby International AB
- System and method for detecting rated maximum system deviation (RMSD) and alleviating RMSD mismatch31 May 2016US 9,356,638 B1Marvell International Ltd.
- Methods and systems for blending between analog and digital broadcast signals12 Apr 2016US 9,312,972 B2Silicon Laboratories Inc.
- Concealment of intermittent mono reception of FM stereo radio receivers12 Jan 2016US 9,237,400 B2Dolby International AB
- Improvement of an audio signal of an fm stereo radio receiver by using parametric stereo26 Mar 2015US 2015/0086022 A1Dolby International AB
- Methods And Systems For Blending Between Analog And Digital Broadcast Signals4 Dec 2014US 2014/0355764 A1Silicon Laboratories Inc.
- Signal quality estimation and control27 Nov 2014US 2014/0348328 A1Texas Instruments Incorporated
- Concealment of intermittent mono reception of fm stereo radio receivers6 Jun 2013US 2013/0142340 A1Dolby International AB
- Audio signal of an fm stereo radio receiver by using parametric stereo16 Aug 2012US 2012/0207307 A1Dolby International AB
Most cited
By later US patents
- Radio receiver with masking of switchover noise25US 5,349,699 ABlaupunkt-Werke GmbH · 1994
- Audio signal of an FM stereo radio receiver by using parametric stereo14US 8,929,558 B2Dolby International AB · 2015
- Stereo/monaural detection apparatus13US 5,210,796 ASony Corporation · 1993
- Apparatus and method for multichannel sound reproduction system10US 7,065,217 B2Harman/Becker Automotive Systems (Becker Division) GmbH · 2006
- Mono/stereo switching circuit7US 5,515,442 ASony Corporation · 1996