...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE transactions on multimedia >Flexible-Pay-Per-Channel: A New Model for Content Access Control in Pay-TV Broadcasting Systems
【24h】

Flexible-Pay-Per-Channel: A New Model for Content Access Control in Pay-TV Broadcasting Systems

机译：每频道弹性付费：付费电视广播系统中内容访问控制的新模型

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In the past, two models, pay-per-channel (PPC) and pay-per-view (PPV), for content access control in pay-TV broadcasting systems have been proposed. In PPC, a subscriber subscribes to one or multiple group(s) of channels, prearranged by the service provider, for a fixed period of time. Thus, it is unfair for the subscriber because the subscriber can not subscribe an arbitrary combination of channels according to his/her preference, and can not dynamically unsubscribe/change his/her subscription during the subscription period. On the other hand, PPV specifies that a subscriber can pay for each single program; thus, it provides a fair service. However, compared with PPC, PPV makes the subscriber inconvenient because of the high subscription frequency and low flexibility of channel selection. Moreover, all the existing PPV systems are only suitable for a small-scale Pay-TV system with limited users because of the overhead for transmission and storage. In this paper, we define a new model, flexible-PPC (F-PPC), which combines the properties and the advantages of PPC and PPV. F-PPC is an improved model of PPC for its fairness. It allows a subscriber to subscribe freely to his/her favorite channels, and unsubscribe/change his/her subscription at any time. Furthermore, it eliminates the inconvenience in PPV, and is suitable for a large-scale Pay-TV system with numerous subscribers and channels. In order to fulfill the requirements of F-PPC, we propose a new conditional access system (CAS) with a four-level key hierarchy. The proposed CAS utilizes a structure of a binary tree to update keys rapidly; therefore, the service provider can promptly update necessary keys when the subscribers change their subscriptions or leave the system. Compared with the existing CAS systems, our CAS is more efficient and flexible to support F-PPC.
机译：过去，已经提出了用于付费电视广播系统中的内容访问控制的两种模式，即按频道付费（PPC）和按观看次数付费（PPV）。在PPC中，订户订阅服务提供商预先安排的一个或多个频道组固定的时间。因此，这对于订户是不公平的，因为订户不能根据他/她的喜好来预订频道的任意组合，并且不能在预订期间动态地取消预订/改变其预订。另一方面，PPV指定订户可以为每个节目付费；因此，它提供了公平的服务。但是，与PPC相比，PPV由于订阅频率高和频道选择的灵活性低，给用户带来不便。此外，由于传输和存储的开销，所有现有的PPV系统仅适用于用户有限的小型付费电视系统。在本文中，我们定义了一个新模型，即柔性PPC（F-PPC），该模型结合了PPC和PPV的特性和优点。 F-PPC出于公平性的考虑是PPC的改进模型。它允许订户自由订阅他/她喜欢的频道，并随时取消订阅/更改他/她的订阅。此外，它消除了PPV中的不便，并且适用于具有众多用户和频道的大规模付费电视系统。为了满足F-PPC的要求，我们提出了一种具有四级密钥层次结构的新条件访问系统（CAS）。提出的CAS利用二叉树的结构来快速更新密钥。因此，当订户更改其订阅或离开系统时，服务提供商可以及时更新必要的密钥。与现有的CAS系统相比，我们的CAS在支持F-PPC方面更加高效和灵活。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号