H04B 1/1653
Detection of the presence of stereo signals and pilot signal regeneration
Official title: {Detection of the presence of stereo signals and pilot signal regeneration}
H04B1/1653 (Detection of the presence of stereo signals and pilot signal regeneration) appears on 73 US grants and 13 published applications in this corpus.
Search patents in H04B- Granted patents
- 73
- Published applications
- 13
- Assignees
- 45
- Inventors
- 73
- Latest grant
- 21 Nov 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 7 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 2 |
| 2007 | 0 | 2 |
| 2008 | 1 | 2 |
| 2009 | 1 | 0 |
| 2010 | 4 | 1 |
| 2011 | 1 | 0 |
| 2012 | 7 | 0 |
| 2013 | 3 | 0 |
| 2014 | 2 | 0 |
| 2015 | 4 | 0 |
| 2016 | 2 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Portable wireless sound system21 Nov 2023US 11,825,282 B1
- Method of demodulation of a stereophonic signal28 Feb 2023US 11,595,068 B2Continental Automotive France
- Method and apparatus for generating a tone signal9 Apr 2019US 10,256,959 B2ADVA Optical Networking SE
- Fast pre-station list representation in a single FM tuner system14 Nov 2017US 9,819,331 B2Harman Becker Automotive Systems GmbH
- System and method for detecting rated maximum system deviation (RMSD) and alleviating RMSD mismatch31 May 2016US 9,356,638 B1Marvell International Ltd.
- Method of demodulation of a stereophonic signal30 Dec 2021US 2021/0409054 A1Continental Automotive France
- Method and apparatus for generating a tone signal28 Jun 2018US 2018/0183553 A1ADVA Optical Networking SE
- Fast pre-station list representation in a single fm tuner system2 Jun 2016US 2016/0156338 A1Harman Becker Automotive Systems GmbH
- Frequency modulation receiver and receiving method thereof11 Nov 2010US 2010/0285764 A1RichWave Technology Corp.
- Fm Receiver2 Oct 2008US 2008/0242248 A1Kabushiki Kaisha Toyota Jidoshokki
Most cited
By later US patents
- Compatible stereophonic receiver99US 4,016,366 ASansui Electric Co., Ltd. · 1977
- Interference reduction using an adaptive receiver filter, signal strength, and BER sensing49US 5,287,556 AMotorola, Inc. · 1994
- Pilot signal extracting circuitry25US 4,002,991 ANippon Gakki Seizo Kabushiki Kaisha · 1977
- Coherent signal generation in digital radio receiver23US 5,467,399 AFord Motor Company · 1995
- FM stereo decoder and method using digital signal processing19US 5,404,405 AHughes Aircraft Company · 1995