June 29, 2001

Liquid Audio awarded patent for 'efficient watermark technology'

Author: JT Smith

PRNewsWire: "Liquid Audio, Inc. (Nasdaq: LQID) today announced that the U.S. Patent Office
has awarded the company a patent (#6,219,634) for its efficient watermark
technique used for distributing secure digital music files. This newly
patented invention covers a technique for embedding and detecting watermark
data within an audio signal in a computationally efficient way. The optimum
level for the watermark signal is determined using mathematical algorithms
that require significantly less processing power than other techniques. This
greatly increases the watermark decoder's ability to detect the watermark
inside recorded music."
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