The Data Compression News Blog

All about the most recent compression techniques, algorithms, patents, products, tools and events.

Subscribe

Posts: RSS Feed
Comments: RSS Feed

Sponsored Links

Recent Posts

  • Bijective BWT (6 Comments)

    David Scott has written a bijective BWT transform, which brings all the advantages of bijectiveness to BWT based compressors. Among other things, making BWT more suitable for compression-before-encryption and also give (slightly) better compression.

  • Asymmetric Binary System (113 Comments)

    Jarek Duda’s “Asymmetric Binary System” promises to be an alternate to arithmetic coding, having all the advantages, but being much simpler. Matt has coded a PAQ based compressor using ABS for back-end encoding. Update: Andrew Polar has written an alternate implementation of ABS.

  • Precomp: More Compression for your Compressed Files (3 Comments)

    So many of today’s files are already compressed (using old, outdated algorithms) that newer algorithms don’t even get a chance to touch them. Christian Schneider’s Precomp comes to rescue by undoing the harm.

  • On2 Technologies is Hiring

    There aren’t too many companies working on cutting edge codecs, and of those few this one is hiring. Best of luck.

  • China’s AVS Specifications Available (2 Comments)

    Its old news that China has developed their own Advanced Video Standard to avoid high licensing fees. English translation of the standard is now available, along with the IPR policy. Finally something technical that you can get your hands on to feed your appetite.

Forgent Awarded New Patent on Echo Cancellation

Posted by Sachin Garg on 19th December 2005 | Permanent Link

After the initial JPEG patent, and then the patent on digital video recording, now forgent has a patent on echo cancellation.

Press Release: Forgent Networks announced it has been awarded the United States Patent No. 6,968,064 (the ‘064 Patent) by the U.S. Patent Office, effectively serving to strengthen the company’s intellectual property portfolio and support its strategy of increasing shareholder value through the licensing of patented technology. The ‘064 Patent is entitled “Adaptive Thresholds in Acoustic Echo Canceller for use During Double Talk” and relates generally to echo cancellation in audio and video systems.

“This new patent award is further testimony to Forgent’s commitment to our intellectual property portfolio and reflects our long history of technology innovation and leadership,” said Richard Snyder, chairman and CEO of Forgent. “We believe in the value of creating intellectual property as well as developing the necessary strategies to protect those assets.”

To improve the quality of voice communication, an “echo canceller” is generally utilized to remove echoes and other background noises. This patent provides a method for canceling far endpoint echo signals in audio signals transmitted from a near endpoint to a far endpoint. More specifically, the ‘064 Patent is concerned with generating adaptive thresholds for use in an echo canceller in two-way audio and video systems.

Leave a Reply

XHTML: You can use these tags: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>