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  • Bijective BWT (7 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 (116 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    So many of today’s files are already compressed (using old, outdated algorithms) that newer algorithms don’t even get a chance to touch them.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.

Newly Issued Digimarc Patents Cover Better Management and Protection of Movies and Music

Posted by Sachin Garg on 5th February 2006 | Permanent Link

Press Release: Digimarc Corporation announced the issuance of new patents covering a range of innovations that enable better management and protection of entertainment content such as music and movies.

“The breadth and depth of Digimarc’s patent portfolio continues to grow at an exciting pace with innovation that supports the delivery of new entertainment experiences for consumers and protects media content from piracy,” said Joel Meyer, Digimarc’s vice president, Intellectual Property. “The new innovations represented in these patents demonstrate how digital watermarking can be used to enhance and protect a variety of media, including movies, music and images.”

Some of the inventions covered within the more than 30 recently issued patents relate to:

* Controlling video with reference to out-of-band data conveyed with the video (e.g., VBI data or headers) and information hidden in the video. U.S. Patent No. 6,987,862.

* Hiding information in audio signals in a way that survives manipulation of the audio, such as audio compression. U.S. Patent No. 6,983,051.

* Robust audio watermark detection technology useful for copy control, broadcast monitoring, copyright identification and remote triggering. U.S. Patent No. 6,944,298.

* Leveraging watermarks embedded in both audio and video portions of multimedia content (e.g., movies) for applications like content identification and protection. U.S. Patent No. 6,975,746.

Digimarc licenses its digital watermarking patents for use with audio, video, image or print content in applications such as broadcast monitoring, forensic tracking, copy prevention or play control, authentication, asset management, rights management, copyright communication and filtering, and content linking or mobile commerce.

Companies currently licensed under Digimarc’s patents include: Activated Content, Dolby Laboratories and its subsidiary Cinea, GCS Research, MediaGrid, Nielsen Media Research, Philips Electronics, Signum, Teletrax (under sublicense from Philips), Thomson, Verance and Verimatrix.

A broader list and description of Digimarc’s patents can be found at www.digimarc.com/patent/patents.asp.

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