H04Q 2213/13031
Pulse code modulation, pcm
Official title: Pulse code modulation, PCM
H04Q2213/13031 (Pulse code modulation, pcm) appears on 102 US grants and 35 published applications in this corpus.
Search patents in H04Q- Granted patents
- 102
- Published applications
- 35
- Assignees
- 56
- Inventors
- 218
- Latest grant
- 5 Feb 2013
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 11 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 11 | 4 |
| 2002 | 9 | 6 |
| 2003 | 8 | 5 |
| 2004 | 8 | 3 |
| 2005 | 5 | 9 |
| 2006 | 5 | 1 |
| 2007 | 1 | 1 |
| 2008 | 4 | 1 |
| 2009 | 1 | 2 |
| 2010 | 5 | 2 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Technique for controlling establishment of a tandem-free transcoder operation5 Feb 2013US 8,369,267 B2Telefonaktiebolaget LM Ericsson (publ)
- Hybrid fiber twisted pair local loop network service architecture15 Jan 2013US 8,355,365 B2AT&T Intellectual Property II, L. P.
- Method for transmitting data in a telecommunications network and switch for implementing said method8 May 2012US 8,175,083 B2Sigram Schindler Beteiligungsgesellschaft mbH
- Method for transmitting data in a telecommunications network and switch for implementing said method3 May 2011US 7,936,751 B2Sigram Schindler Beteiligungsgesellschaft mbH
- Wideband-narrowband telecommunication12 Oct 2010US 7,813,378 B2Alcatel
- Method For Transmitting Data In a Telecommunications Network And Switch For Implementing Said Method25 Aug 2011US 2011/0206041 A1Sigram Schindler Beteiligungsgesellschaft mbH
- Technique for controlling establishment of a tandem-free transcoder operation6 May 2010US 2010/0110980 A1Telefonaktiebolaget LM Ericsson (publ)
- Hybrid fiber twisted pair local loop network service architecture22 Apr 2010US 2010/0098000 A1AT&T Intellectual Property II, L. P.
- Method For Transmitting Data In a Telecommunications Network And Switch For Implementing Said Method21 May 2009US 2009/0129381 A1Teles AG Informationstechnologien
- Hybrid fiber twisted pair local loop network service architecture26 Mar 2009US 2009/0080884 A1AT&T Corp.
Most cited
By later US patents
- Synchoronous packet voice/data communication system304US 4,771,425 AStratacom, Inc. · 1988
- Coaxial cable/twisted pair cable telecommunications network architecture253US 6,546,016 B1AT&T Corp. · 2003
- Synchronous packet voice/data communication system195US 4,903,261 AStratacom, Inc. · 1990
- Synchronous packet voice/data communication system173US 4,819,228 AStratacom, Inc. · 1989
- Combined analog and digital communications device147US 5,815,505 AAdvanced Micro Devices, Inc. · 1998