Enhancing smart card usage for associating media content with households
First Claim
1. A smart card comprising:
- a key, associated with a household, to be used to encrypt and decrypt media content at the household that is associated with the household, the key being a combination of a household identifier and a private key of a private key/public key pair; and
a memory unit, the memory unit including,a user-specific information storage section to store user preferences, anda data storage section to store data that is expected to be of value to a user.
2 Assignments
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Accused Products
Abstract
Various enhancements are made to using smart cards that are associated with (or to be associated with) a household. In one embodiment, data that is expected to be of value to a user (e.g., electronic money) is attached to that user'"'"'s smart card(s), thereby providing an incentive for the user to keep his or her smart card(s) secure. In another embodiment, the smart cards are used for parental control (e.g., by restricting the children'"'"'s access to one or more of the smart cards). In yet another embodiment, smart cards are used to enhance user privacy by maintaining user-specific information on the smart cards (which can be de-coupled from the computing device whenever the user desires). In another embodiment, the boundaries of a network of computing devices are defined by multiple smart cards—any computing device to which a smart card is coupled is part of the network.
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Citations
51 Claims
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1. A smart card comprising:
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a key, associated with a household, to be used to encrypt and decrypt media content at the household that is associated with the household, the key being a combination of a household identifier and a private key of a private key/public key pair; and a memory unit, the memory unit including, a user-specific information storage section to store user preferences, and a data storage section to store data that is expected to be of value to a user. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A smart card comprising:
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a private key of a private key/public key pair; a household identifier, associated with one particular household, to be combined with the private key, and the combined value to be used to encrypt and decrypt media content that is associated with the one particular household and that is to be rendered at the one particular household, but not to encrypt and decrypt media content associated with other households; and a data storage section to store data that is expected to be of value to a user. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method of encrypting all media content received at a user'"'"'s home from a programming source, the method comprising:
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checking, at the user'"'"'s home, whether a smart card is authorized to encrypt the media content; and encrypting, at the user'"'"'s home using a key that is a combination of a household identifier associated with the user'"'"'s home and a private key of a private key/public key pair, the media content regardless of whether the received media content was received scrambled, but only if the smart card is authorized to encrypt the media content. - View Dependent Claims (20, 21, 22, 23)
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24. A method of decrypting media content, the method comprising:
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checking whether a portable integrated circuit device is authorized to decrypt the media content, wherein the portable integrated circuit device stores a decryption key and additional data, and wherein the decryption key is a combination of a household identifier and a private key of a private key/public key pair; determining that the portable integrated circuit device is authorized to decrypt the media content only if data other than electronic money is stored as the additional data on the portable integrated circuit device, wherein the data is expected to be of value to a user, and wherein the data is not used to decrypt the media content; and decrypting the media content only if the portable integrated circuit device is authorized to decrypt the media content. - View Dependent Claims (25, 26, 27)
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28. A system comprising:
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a plurality of smart cards, each to be used for encrypting different categories of multimedia presentations; and an encryption module coupled to receive a multimedia presentation and encrypt, at the user'"'"'s home, the multimedia presentation based on a combination of a household identifier and a private key of a private key/public key pair maintained on one of the plurality of smart cards. - View Dependent Claims (29, 30)
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31. A method of allowing parental control over media content, the method comprising:
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receiving, at a household, media content; encrypting, at the household, all of the received media content using a key corresponding to a smart card regardless of whether the received media content was received scrambled, wherein the key comprises a combination of a household identifier associated with one household and a private key of a private key/public key pair; and requiring the smart card to be present to decrypt and render the media content. - View Dependent Claims (32, 33, 34, 35)
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36. A method of allowing parental control over media content, the method comprising:
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comparing a rating corresponding to the media content to a rating associated with a smart card; and allowing access to the media content if the rating corresponding to the media content does not exceed the rating associated with the smart card, wherein a plurality of ratings do not exceed the rating associated with the smart card, and wherein the allowing access comprises allowing the media content to be encrypted using a combination of a household identifier and a private key of a private key/public key pair, at a user'"'"'s home, for subsequent processing. - View Dependent Claims (37, 38)
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39. One or more computer-readable media having stored thereon a computer program that, when executed by a computing device, causes the computing device to perform acts including:
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receiving, at a household, media content; controlling, at the household, encryption of the received media content based on a combination of a household identifier and a private key of a private key/public key pair corresponding to a smart card; and maintaining user preferences information on the smart card, the user preferences information being available only when the smart card is coupled to the computing device. - View Dependent Claims (40)
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41. A smart card comprising:
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a key, associated with one particular household, to be used to encrypt and decrypt media content associated with the one particular household at the one particular household but not to encrypt and decrypt media content associated with other households, wherein the key is to encrypt all the media content associated with the one particular household without regard for whether the media content was received scrambled, and wherein the key comprises a combination of a household identifier of the one particular household and a private key of a private key/public key pair; and a user-specific information storage section to store user preferences. - View Dependent Claims (42, 43, 44, 45)
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46. A method comprising:
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maintaining, on an integrated circuit card, information regarding a user'"'"'s preferences corresponding to media content; and maintaining, on the integrated circuit card, a key to be used to encrypt and decrypt media content associated with one particular household at the one particular household but not to encrypt and decrypt media content associated with other households, wherein the key is to be used to encrypt all the media content associated with the one particular household without regard for whether the media content was received scrambled, and wherein the key is a combination of a household identifier of the one particular household and a private key of a private key/public key pair. - View Dependent Claims (47)
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48. A method of identifying boundaries of a network of devices, the method comprising:
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encrypting, at a single house using a key that is a combination of a household identifier and a private key of a private key/public key pair, media content based on an identifier corresponding to a plurality of smart cards regardless of whether the media content is received scrambled; and limiting rendering of the media content to a network of devices to which the plurality of smart cards are coupled, wherein the network of devices is maintained within the single house. - View Dependent Claims (49, 50, 51)
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Specification