Invention Grant
US08417939B2 Method and apparatus for file sharing between a group of user devices with encryption-decryption information sent via satellite and the content sent separately
有权
通过卫星发送的加密解密信息和单独发送的内容在一组用户设备之间进行文件共享的方法和装置
- Patent Title: Method and apparatus for file sharing between a group of user devices with encryption-decryption information sent via satellite and the content sent separately
- Patent Title (中): 通过卫星发送的加密解密信息和单独发送的内容在一组用户设备之间进行文件共享的方法和装置
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Application No.: US11786103Application Date: 2007-04-11
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Publication No.: US08417939B2Publication Date: 2013-04-09
- Inventor: Raynold M. Kahn , Peter M. Klauss
- Applicant: Raynold M. Kahn , Peter M. Klauss
- Applicant Address: US CA El Segundo
- Assignee: The DIRECTV Goup, Inc.
- Current Assignee: The DIRECTV Goup, Inc.
- Current Assignee Address: US CA El Segundo
- Main IPC: H04L29/06
- IPC: H04L29/06
Abstract:
A communication system 100 includes a group of user devices 110, a first satellite 106 and a content delivery network 120 in communication with the group of user devices 110. The content delivery network 120 communicates encryption-decryption information to the plurality of user devices using the first satellite 106 and encrypts the content in response to the encryption-decryption information. The content delivery network 120 communicates the content to the plurality of user devices separately from the encryption-decryption information. The plurality of user devices 110 decrypts the content in response to the encryption-decryption information. A control word packet may also be used to convey security information to the user devices so that decryption may be performed.
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