Invention Grant
US07756792B2 System and method for controlling the use and duplication of digital content distributed on removable media 失效
用于控制分布在可移动媒体上的数字内容的使用和复制的系统和方法

System and method for controlling the use and duplication of digital content distributed on removable media
Abstract:
Systems and methods for controlling the use and duplication of digital content distributed on removable media are described. In accordance with embodiments of the present invention digital content is protected by allowing a particular number of protected (e.g., encrypted) copies of the digital content to be made. Typically, these copies may only be used on and moved between authorized devices. In one embodiment, if copies are desired, the maximum number of allowable copies of the protected digital content are made and stored on a computer's hard drive when the storage medium (e.g., a CD) containing the content is inserted into the computer. Each copy can then be moved but not copied to other devices (e.g., portable solid state devices). In an alternative embodiment, the storage medium containing the digital content is writable (e.g., a CD-R). When the storage medium is inserted into the computer, the computer writes information to the storage medium which regulates future copying and playing of the digital content on the storage medium.
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