H04J 3/175
Speech activity or inactivity detectors
Official title: {Speech activity or inactivity detectors (echo suppressors H04B3/20)}
H04J3/175 (Speech activity or inactivity detectors) appears on 43 US grants and 7 published applications in this corpus.
Search patents in H04J- Granted patents
- 43
- Published applications
- 7
- Assignees
- 30
- Inventors
- 70
- Latest grant
- 12 Jul 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 6 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 7 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 5 | 3 |
| 2004 | 1 | 2 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- System and method for detecting and managing fraud12 Jul 2016US 9,390,418 B2Verizon Patent and Licensing Inc.
- System and method for detecting and managing fraud7 Oct 2008US 7,433,855 B2MCI Communications Corporation
- Method and system for efficiently passing the silence or unused status of a DSO channel through a DsO switch matrix and a data switch9 Jan 2007US 7,161,959 B2MCI, Inc.
- System, method and computer program product for processing event records3 Oct 2006US 7,117,191 B2MCI, Inc.
- System, method and computer program product for processing event records4 May 2004US 6,732,082 B1WorldCom, Inc.
- System and method for detecting and managing fraud21 May 2009US 2009/0129573 A1MCI Communications Corporation
- System, method and computer program product for processing event records7 Apr 2005US 2005/0075992 A1MCI WorldCom, Inc.
- Method and system for efficiently passing the silence or unused status of a DSO channel through a DsO switch matrix and a data switch28 Oct 2004US 2004/0213227 A1WorldCom, Inc.
- System and method for detecting and managing fraud10 Jun 2004US 2004/0111305 A1WorldCom, Inc.
- Method and apparatus supporting TDD/TTY modulation over vocoded channels16 Oct 2003US 2003/0196155 A1
Most cited
By later US patents
- System and method for prevention of cell loss due to quality of service contracts in an ATM network174US 5,898,673 ASiemens Information and Communication Networks, Inc. · 1999
- System and method for detecting and managing fraud170US 6,601,048 B1MCI Communications Corporation · 2003
- System and method for detecting and managing fraud139US 7,433,855 B2MCI Communications Corporation · 2008
- Speech-nonspeech detector-classifier96US 4,281,218 ABell Telephone Laboratories, Incorporated · 1981
- Efficient transmission of voice silence intervals95US 5,897,613 ALucent Technologies Inc. · 1999