H04N 9/835
Involving processing of the sound signal
Official title: involving processing of the sound signal
H04N9/835 (Involving processing of the sound signal) appears on 125 US grants and 15 published applications in this corpus.
Search patents in H04N- Granted patents
- 125
- Published applications
- 15
- Assignees
- 25
- Inventors
- 166
- Latest grant
- 4 Oct 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 10 | 0 |
| 1985 | 9 | 0 |
| 1986 | 9 | 0 |
| 1987 | 11 | 0 |
| 1988 | 11 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 8 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 8 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 2 |
| 2003 | 0 | 2 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 2 | 1 |
| 2007 | 1 | 0 |
| 2008 | 3 | 5 |
| 2009 | 0 | 0 |
| 2010 | 2 | 0 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 2 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Second screen methods and arrangements4 Oct 2016US 9,462,341 B2Digimarc Corporation
- Audio copy protection system28 Jan 2014US 8,639,092 B2DCS Copy Protection Limited
- Second screen methods and arrangements20 Aug 2013US 8,516,533 B2Digimarc Corporation
- Audio copy protection system17 Apr 2012US 8,160,423 B2DCS Copy Protection Limited
- High-efficiency encoder and video information recording/reproducing apparatus3 May 2011US 7,936,817 B2Mitsubishi Denki Kabushiki Kaisha
- Second screen methods and arrangements18 Sep 2014US 2014/0282735 A1Digimarc Corporation
- Second screen methods and arrangements19 Dec 2013US 2013/0340003 A1Digimarc Corporation
- Second screen methods and arrangements13 Jun 2013US 2013/0152139 A1Digimarc Corporation
- Audio copy protection system22 Nov 2012US 2012/0294588 A1DCS Copy Protection Limited
- High efficiency encoder and video information recording/reproducing apparatus29 May 2008US 2008/0123746 A1Mitsubishi Denki Kabushiki Kaisha
Most cited
By later US patents
- Second screen methods and arrangements124US 8,516,533 B2Digimarc Corporation · 2013
- Deemphasis and subsequent reemphasis of high-energy reversed-spectrum components of a folded video signal112US 6,246,827 B1Samsung Electronics Co., Ltd. · 2001
- Recording apparatus for recording main information with additional information88US 5,132,807 ACanon Kabushiki Kaisha · 1992
- High-efficiency encoder and video information recording/reproducing apparatus54US 5,488,482 AMitsubishi Denki Kabushiki Kaisha · 1996
- Audio disk of improved data structure and reproduction apparatus thereof51US 6,381,403 B1Victor Company of Japan, Ltd. · 2002