H04H 40/54
Generating subcarriers
Official title: generating subcarriers
H04H40/54 (Generating subcarriers) appears on 17 US grants and 9 published applications in this corpus.
Search patents in H04H- Granted patents
- 17
- Published applications
- 9
- Assignees
- 16
- Inventors
- 35
- Latest grant
- 19 Nov 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 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 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 3 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 2 | 0 |
| 2011 | 2 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Analog and digital audio alignment in the HD radio exciter engine (exgine)19 Nov 2019US 10,484,115 B2iBiquity Digital Corporation
- Stereo decoder and method for processing pilot signal25 Oct 2011US 8,045,717 B2Media Tek Inc.
- Pilot tracking module operable to adjust interpolator sample timing within a handheld audio system22 Feb 2011US 7,894,560 B2Freescale Semiconductor, Inc.
- FM stereo decoder incorporating Costas loop pilot to stereo component phase correction31 Aug 2010US 7,787,630 B2Texas Instruments Incorporated
- System and method of a stereo receiving system23 Feb 2010US 7,668,525 B2Delphi Technologies, Inc.
- Analog and digital audio alignment in the hd radio exciter engine (exgine)15 Aug 2019US 2019/0253163 A1iBiquity Digital Corporation
- System and method of a stereo receiving system4 Sep 2008US 2008/0214133 A1Delphi Technologies, Inc.
- Stereo decoder and method for processing pilot signal18 Oct 2007US 2007/0242831 A1Media Tek Inc.
- Pilot tracking module operable to adjust interpolator sample timing within a handheld audio system22 Mar 2007US 2007/0064849 A1Freescale Semiconductor, Inc.
- Fm stereo decoder incorporating costas loop pilot to stereo component phase correction1 Mar 2007US 2007/0047737 A1Texas Instruments Incorporated
Most cited
By later US patents
- Method and apparatus for digital audio broadcasting and reception211US 5,315,583 AUSA Digital Radio · 1994
- Method and apparatus for digital audio broadcasting and reception158US 5,278,826 AUSA Digital Radio · 1994
- Method and apparatus for digital audio broadcasting and reception63US 5,278,844 AUSA Digital Radio · 1994
- FM data-system radio receiver55US 5,507,024 AAllegro MicroSystems, LLC · 1996
- FM stereo decoder incorporating Costas loop pilot to stereo component phase correction11US 7,787,630 B2Texas Instruments Incorporated · 2010