Liquid Audio Granted Patent for Watermark Technology

Robust Watermark Technique Protects Music, Maintains CD-Quality Sound



Apr 11, 2001, 01:00 ET from Liquid Audio, Inc.

    REDWOOD CITY, Calif., April 11 /PRNewswire/ --
 Liquid Audio, Inc. (Nasdaq:   LQID) today announced that the U.S. Patent Office
 has awarded the company a patent (#6,209,094) for its technique of embedding
 watermark data in digital music files.  The watermark technique, invented by
 Liquid Audio engineers in 1998, is part of Liquid Audio's Digital Rights
 Management (DRM) solution and is designed to help content owners protect their
 music for digital delivery without compromising audio quality or consumer
 flexibility.
     (Photo:  http://www.newscom.com/cgi-bin/prnh/19990915/LQIDLOGO )
     Watermarking is a process whereby data that defines permissions for a
 digital music track is converted into sound, then "mixed" with the music.
 Media players can then be programmed to detect the watermark and obey the
 permissions set by the content owner.  Liquid Audio's patent covers a
 technique for embedding watermark data in an audio signal that is both robust,
 cannot be removed from the audio without destroying the music, and
 imperceptible-cannot be heard by the music listener.
     "This patent on our robust watermarking technique underscores
 Liquid Audio's commitment to provide innovative technology that addresses the
 current challenges of digital distribution," said Leon Rishniw, vice president
 of Engineering at Liquid Audio, Inc.
     Liquid Audio offers a four-part DRM solution to protect music distributed
 on the Internet including encryption, watermarking, copy control and copyright
 management.  Liquid Audio's DRM technologies were developed to provide content
 owners with a method to protect and enforce the rights associated with digital
 music that is published, delivered or accessed electronically.  Liquid Audio
 DRM is one of the most widely used system to protect music copyrights and
 enables more than 10,500 artists from 1,200 labels to securely distribute
 their music online.
     Liquid Audio, Inc. is a leading provider of software and services for the
 digital delivery of music over the Internet.  The Liquid Audio solution gives
 musicians, record labels, Web sites and music retailers the ability to
 publish, syndicate and securely sell recorded music online with copy
 protection and copyright management.  Using the Liquid(TM) Player software,
 available for free download at www.liquidaudio.com, music fans can preview and
 purchase downloadable music from the more than 1,000 affiliate Web sites in
 the Liquid Music Network(SM).  Traded on Nasdaq under the symbol LQID,
 Liquid Audio is located in Redwood City, California.
     NOTE:  Liquid, Liquid Audio, the Liquid Audio logo, and Liquid Music are
 trademarks of Liquid Audio, Inc.
     For more information about Liquid Audio software and services call
 888-liquid-0 or visit http://www.liquidaudio.com.
 
 

SOURCE Liquid Audio, Inc.
    REDWOOD CITY, Calif., April 11 /PRNewswire/ --
 Liquid Audio, Inc. (Nasdaq:   LQID) today announced that the U.S. Patent Office
 has awarded the company a patent (#6,209,094) for its technique of embedding
 watermark data in digital music files.  The watermark technique, invented by
 Liquid Audio engineers in 1998, is part of Liquid Audio's Digital Rights
 Management (DRM) solution and is designed to help content owners protect their
 music for digital delivery without compromising audio quality or consumer
 flexibility.
     (Photo:  http://www.newscom.com/cgi-bin/prnh/19990915/LQIDLOGO )
     Watermarking is a process whereby data that defines permissions for a
 digital music track is converted into sound, then "mixed" with the music.
 Media players can then be programmed to detect the watermark and obey the
 permissions set by the content owner.  Liquid Audio's patent covers a
 technique for embedding watermark data in an audio signal that is both robust,
 cannot be removed from the audio without destroying the music, and
 imperceptible-cannot be heard by the music listener.
     "This patent on our robust watermarking technique underscores
 Liquid Audio's commitment to provide innovative technology that addresses the
 current challenges of digital distribution," said Leon Rishniw, vice president
 of Engineering at Liquid Audio, Inc.
     Liquid Audio offers a four-part DRM solution to protect music distributed
 on the Internet including encryption, watermarking, copy control and copyright
 management.  Liquid Audio's DRM technologies were developed to provide content
 owners with a method to protect and enforce the rights associated with digital
 music that is published, delivered or accessed electronically.  Liquid Audio
 DRM is one of the most widely used system to protect music copyrights and
 enables more than 10,500 artists from 1,200 labels to securely distribute
 their music online.
     Liquid Audio, Inc. is a leading provider of software and services for the
 digital delivery of music over the Internet.  The Liquid Audio solution gives
 musicians, record labels, Web sites and music retailers the ability to
 publish, syndicate and securely sell recorded music online with copy
 protection and copyright management.  Using the Liquid(TM) Player software,
 available for free download at www.liquidaudio.com, music fans can preview and
 purchase downloadable music from the more than 1,000 affiliate Web sites in
 the Liquid Music Network(SM).  Traded on Nasdaq under the symbol LQID,
 Liquid Audio is located in Redwood City, California.
     NOTE:  Liquid, Liquid Audio, the Liquid Audio logo, and Liquid Music are
 trademarks of Liquid Audio, Inc.
     For more information about Liquid Audio software and services call
 888-liquid-0 or visit http://www.liquidaudio.com.
 
 SOURCE  Liquid Audio, Inc.