发明名称 System and method for distributing protected audio content on optical media
摘要 A system and method for producing and using a protected optical media is described. One feature provides for a compact disc containing digital rights management protection to prevent unauthorized copying of copyrighted materials. Another feature provides for secure copying, storage, transfer, and playback of digital audio content from a protected compact disc or computer storage. Yet another feature provides for a versatile optical media that can be used in both traditional audio compact disc players and in computer CD-ROM drives without risking the security of the content on the media or preventing purchasers from having a robust content experience.
申请公布号 US7685646(B1) 申请公布日期 2010.03.23
申请号 US20030659985 申请日期 2003.09.10
申请人 REALNETWORKS, INC. 发明人 HUG JOSHUA D.;HAMEL ALAIN;CAPPIO ADAM B.;NEWMAN BRENT D.;FU XIAODONG;AGARWAL RAHUL;AYARS JEFFREY M.
分类号 G06F7/04;G06F17/30;H04N7/16 主分类号 G06F7/04
代理机构 代理人
主权项
地址