公开(公告)号：US20170070496A1

公开(公告)日：2017-03-09

申请号：US15122764

申请日：2015-02-20

Applicant: VIACCESS

Inventor： Mathieu PHIRMIS ,  Mathieu BOIVIN ,  Quentin CHIEZE ,  Nicolas POCHON

IPC: H04L29/06

CPC classification number: H04L63/08 ,  G06F1/14 ,  G06F21/10 ,  H04L63/123 ,  H04L2209/603 ,  H04L2463/101

Abstract: A Method for supplying protected multimedia content during which a terminal a) acquires a service date from a date server and b) evaluates a temporal criterion of a licence with respect to the last acquired service date. A headend associates with each segment of the multimedia content, its transmission date, and transmits it in a stream together with the segment. The terminal extracts from the stream the date of transmission of the segment, then it compares the extracted transmission date to the last acquired service date. And, only if the extracted transmission date is later than the last acquired service date, acquires it as service date, and uses it as last acquired service date on an execution of the step b) between two successive executions of the step a).

Abstract translation: 一种用于提供受保护的多媒体内容的方法，其中终端a）从日期服务器获取服务日期，以及b）评估关于最后获取的服务日期的许可证的时间标准。 头端与多媒体内容的每个段，其发送日期相关联，并且与段一起以流形式发送它。 终端从流中提取分段的传输日期，然后将提取的传输日期与最后获取的服务日期进行比较。 而且，只有提取的发送日期晚于最后获取的服务日期，才将其作为服务日期获取，并且在步骤a）的两个连续执行之间执行步骤b）时将其用作最后获取的服务日期。