e.Digital Corporation (fka EDIG)

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Liquid Audio Receives Patent for Its Secure Portable Device Technology
REDWOOD CITY, Calif., April 4 /PRNewswire/ -- Liquid Audio, Inc. (Nasdaq: LQID - news) today announced that the U.S. Patent Office has granted the company a patent for its copy protection technology used with consumer devices, such as portable music players. Liquid Audio's invention (Patent No. 6,367,019), provides a digital rights system for consumer devices that enables the playback of multimedia while protecting and enforcing the rights of content owners.

(Photo: http://www.newscom.com/cgi-bin/prnh/19990915/LQIDLOGO )
``Liquid Audio has always strived to build technology that respects the rights of content owners. This patent reflects our pioneering efforts to provide technology solutions for device manufacturers, giving them access to protected content,'' said Leon Rishniw, vice president of Engineering at Liquid Audio, Inc.

This new patent is a core component of Liquid Audio's Secure Portable Player Platform (SP3), a licensable technology that enables consumer electronics companies and chipset manufacturers to create portable devices that playback digital audio in accordance with the rights and business rules of content owners. Liquid Audio's SP3 technology provides a digital rights management (DRM) system that allows for authorized playback of digital content on either internal or external memory; sharing of content between authorized playback systems; unauthorized tampering of content metadata; and relocation and renewal of security keys on a device. Several companies are currently utilizing SP3 including ARM, AIWA, Cirrus Logic, Hitachi, I-O Data, Mpuls3, Palm, Sanyo, TDK and Texas Instruments.

Liquid Audio, Inc. is a leading provider of software, infrastructure and services for the secure digital delivery of media over the Internet. The Liquid Audio solution gives content owners, Web sites and companies the ability to publish, syndicate and securely sell digital media online with copy protection and copyright management. Using the Liquid(TM) Player software, available for free download at www.liquidaudio.com, consumers can preview and purchase downloadable music from hundreds of affiliate Web sites in the Liquid Music Network(TM).

NOTE: Liquid, Liquid Audio, Liquid Music, Liquid Music Network and the Liquid Audio logo are trademarks of Liquid Audio, Inc.

SOURCE: Liquid Audio, Inc.