发明名称 TIME-WINDOW-CONSTRAINED MULTICAST FOR FUTURE DELIVERY MULTICAST
摘要 To provide a fairness of distribution, an encrypted event, containing information not intended for release prior to a release time, can be sent to clients pri or to the release time. In such a manner the bulk of the information can be transferred to the clients without concern to the duration of the transfer. At the release time, a smal l decryption key can be sent, either from a central sever, or from multiple server, utilizing multiple network paths to provide for the greatest likelihood that each client will receive the decryption key with a minimum of delay. Each client is thereby provided acce ss to the information at approximately the same time, regardless of the bandwidth available to each client. Additionally, trusted edge servers, that can be trusted not to release information prior to an appropriate time, can send an unencrypted event, or decrypt the encrypted event and send the decrypted event, at a determined time, either prior to or after the release time, such that the decrypted or unencrypted event arrives at the clients that could not store and decrypt the encrypted event at approximately the sa me time as the key arrives at the other clients. Each client can thus receive the information at approximately the same time, regardless of the client's bandwidth or its ability to store and decrypt information.
申请公布号 CA2422153(A1) 申请公布日期 2003.09.15
申请号 CA20032422153 申请日期 2003.03.14
申请人 MICROSOFT CORPORATION 发明人 PADMANABHAN, VENKATA N.;CABRERA, LUIS FELIPE
分类号 G06F13/00;G06F21/00;H04L9/08;(IPC1-7):H04L9/12;H04L12/16 主分类号 G06F13/00
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