H04L 2012/6491
Echo cancellation
Official title: {Echo cancellation}
H04L2012/6491 (Echo cancellation) appears on 51 US grants and 17 published applications in this corpus.
Search patents in H04L- Granted patents
- 51
- Published applications
- 17
- Assignees
- 20
- Inventors
- 51
- Latest grant
- 1 Feb 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 3 | 0 |
| 1996 | 8 | 0 |
| 1997 | 7 | 0 |
| 1998 | 8 | 0 |
| 1999 | 4 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 3 |
| 2004 | 1 | 3 |
| 2005 | 0 | 2 |
| 2006 | 5 | 1 |
| 2007 | 4 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 2 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 2 | 2 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Echo cancellation in multiple port full duplex (FDX) nodes and amplifiers1 Feb 2022US 11,239,985 B2Cisco Technology, Inc.
- Techniques to dynamically engage echo cancellation17 Aug 2021US 11,095,769 B1Whatsapp Inc.
- Proactive echo cancellation (EC) training8 Sep 2020US 10,771,106 B1Cisco Technology, Inc.
- Coordinated background training in a full-duplex hybrid fiber-coaxial network24 Mar 2020US 10,601,462 B2MaxLinear, Inc.
- Techniques to dynamically engage echo cancellation5 Mar 2019US 10,225,395 B2Whatsapp Inc.
- Vehicle PHY configuration depending on cable length21 Nov 2024US 2024/0388471 A1Marvell Asia Pte Ltd
- Echo cancellation in multiple port full duplex (fdx) nodes and amplifiers22 Oct 2020US 2020/0336280 A1Cisco Technology, Inc.
- Proactive echo cancellation (ec) training24 Sep 2020US 2020/0304170 A1Cisco Technology, Inc.
- Coordinated background training in a full-duplex hybrid fiber-coaxial network19 Sep 2019US 2019/0288742 A1MaxLinear, Inc.
- Techniques to dynamically engage echo cancellation15 Jun 2017US 2017/0171380 A1Whatsapp Inc.
Most cited
By later US patents
- System and method for communication of audio data over a packet-based network392US 5,526,353 A1996
- Computer-based multifunction personal communications system375US 5,452,289 AMulti-Tech Systems, Inc. · 1995
- Voice over data modem with selectable voice compression180US 5,617,423 AMulti-Tech Systems, Inc. · 1997
- Dynamic selection of compression rate for a voice compression algorithm in a voice over data modem170US 5,546,395 AMulti-Tech Systems, Inc. · 1996
- Device for adapting narrowband voice traffic of a local access network to allow transmission over a broadband asynchronous transfer mode network151US 5,623,491 ADSC Communications Corporation · 1997