초록 ▼

Electronic steganographic techniques can be used to encode a rights management control signal onto an information signal carried over an insecure communications channel. Steganographic techniques ensure that the digital control information is substantially invisibly and substantially indelibly carri

Electronic steganographic techniques can be used to encode a rights management control signal onto an information signal carried over an insecure communications channel. Steganographic techniques ensure that the digital control information is substantially invisibly and substantially indelibly carried by the information signal. These techniques can provide end-to-end rights management protection of an information signal irrespective of transformations between analog and digital. An electronic appliance can recover the control information and use it for electronic rights management to provide compatibility with a Virtual Distribution Environment. In one example, the system encodes low data rate pointers within high bandwidth time periods of the content signal to improve overall control information read/seek times.

대표청구항 ▼

1. A method including:at a first apparatus, receiving (1) a secure digital container including a file and information steganographically encoded into the file, and (2) a first control set made up of at least one control; at the first apparatus, opening the secure digital container to retrieve at lea

1. A method including:at a first apparatus, receiving (1) a secure digital container including a file and information steganographically encoded into the file, and (2) a first control set made up of at least one control; at the first apparatus, opening the secure digital container to retrieve at least a first portion of the file, the step of opening being at least in part controlled by the first control set; and recording information relating to the opening of the secure digital container, the recording occurring at least in part under control of the first control set.