Conditional access via secure logging with simplified key management

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6738905
SERIAL NO

09291052

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method and apparatus for distributing content data from a content provider to a subscriber. The method includes encrypting content data by the content provider and providing the content data from the content provider to a broadcaster. The content provider also provides a content descriptor, including keys to decrypt the encrypted content, to a conditional access provider. The broadcaster distributes the encrypted content information to a subscriber. A business service provider negotiates with the subscriber to deliver individual content programs or packages of content programs to the subscriber for a fee. The conditional access provider distributes a content descriptor including keys necessary to decrypt the programs the subscriber selected from the business service provider. A CAM retained by the subscriber maintains a log of programs accessed, and uploads the log to the business service provider, which is used to determine the appropriate fee which the subscriber should be charged. Alternatively, the subscriber may purchase a package plan which does not require logging, and thus allows unidirectional communication.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
GOOGLE TECHNOLOGY HOLDINGS LLCMOUNTAIN VIEW, CA23312

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Goldschlag, David M Silver Spring, MD 4 289
Kravitz, David W Fairfax, VA 27 588

Cited Art Landscape

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Patent Citation Ranking

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* Cited By Examiner