发明名称 |
Method and apparatus for file sharing between a group of user devices with separately sent crucial portions and non-crucial portions |
摘要 |
A communication system and method for operating the same includes a group of user devices and a content delivery network in communication with the group of user devices. The content delivery network selects a plurality user devices from the group of user devices, divides the content into a crucial portion and a non-crucial portions, and encrypts the crucial portions differently for each of the user devices in the group using conditional access encryption. The content delivery network communicates the non-crucial portions to the plurality of user devices, communicates the encrypted crucial portion to the plurality of user devices separately from the non-crucial. The plurality of user devices assembles the crucial portion and the non-crucial portions to form the content. |
申请公布号 |
US8255547(B2) |
申请公布日期 |
2012.08.28 |
申请号 |
US201113012656 |
申请日期 |
2011.01.24 |
申请人 |
SCHLACHT DAVID N.;KIDD DEANNA R.;BASSE HANNO;KAHN RAYNOLD M.;KASAKITIS STEVEN;THE DIRECTV GROUP, INC. |
发明人 |
SCHLACHT DAVID N.;KIDD DEANNA R.;BASSE HANNO;KAHN RAYNOLD M.;KASAKITIS STEVEN |
分类号 |
G06F15/16 |
主分类号 |
G06F15/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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