Design of an IPTV Conditional Access System Supporting Multiple-Services

Author(s):  
Gregory L. Harding ◽  
Anne V. D. M. Kayem

Conditional Access (CA) is typically used by pay-television operators to restrict access to content to authorized subscribers. While several commercial CA solutions exist for structured broadcasting, Internet-based television, and video-on-demand services, these solutions are mostly proprietary. Use of proprietary solutions incurs royalty payments and increased cost of components for Set-Top-Box manufacturers. In many developing countries Set-Top-Boxes for the migration to Digital Television will be subsidized by government. An efficient, flexible, and open conditional system that does not incur royalties or require specialised security hardware would be beneficial for these countries. In this chapter, the authors explore conditional access solutions that draw on the area of cryptographic key management and distribution for IPTV environments. They wrap up with propositions on how an open Cryptographic Access Control (CAC) system can be implemented practically by pay-television operators who have to handle a large number of subscriptions.

2012 ◽  
Vol 433-440 ◽  
pp. 5020-5024
Author(s):  
Xiu Zhi Yang ◽  
Hua Ping Zeng ◽  
Jian Chen

SimulCrypt Synchronizer is one of the key equipments to make up of DTV Condition Access system. This article is based on Specification of Conditional Access System for Digital Television Broadcasting, It has proposed the methods of reduplicated SCG_ID processing, synchronization of control word and crypto period, as well as circular communication of multi-stream. Moreover, using these methods it has realized SimulCrypt synchronization control System on embedded CPU “Nios II”.


2012 ◽  
Vol 182-183 ◽  
pp. 619-623
Author(s):  
Yu Huang Ye ◽  
Xiao Ping Huang

During these years, as the digital TV (DTV) broadcasting technique is developed, the number of set-top box (STB) consumers is increasing quickly, and they spend more money on pay-TV. Conditional Access System is the key technology to realize pay-TV and interact-TV. This paper introduces Man-Machine Interface (MMI) standard of En50221[1] for conditional access system and it’s a method of realization on STB of DTV.


2013 ◽  
Vol 385-386 ◽  
pp. 1554-1557
Author(s):  
Yu Ru Wang ◽  
Zhen Ping Lan ◽  
Ping Li ◽  
Dong Ming Lei

Digital TV refers to a system which transforms the traditional analog signal into digital for processing, transmitting and receiving. In order to protect the interests of the operators and ensure the development of digital television, CAS (Conditional Access System) of digital TV uses various kinds of digital technology through the scrambling process of the program, so that only the authorized users can watch the scrambled programs. This paper mainly introduces the principle of CAS in current DTV, as well as elaborates the realization example of the CA running on the STi5105 chip platform and the detailed process from transplant to descrambling successfully.


Comunicar ◽  
2005 ◽  
Vol 13 (25) ◽  
Author(s):  
María-del-Rosario Fernández-Falero

The challenge of the electronic commerce for the new century is going to be the step to the digital television, so that we go away to having to adapt at the rate of a television been founded on the diffusion, to a set of services of digital video based on the access. Of this form, the spectator of television is going to meet the possibility of interacting with the way, which supposes a change in the industry of the broadcast, so then though till now they were the distribution companies of information and entertainment the only ones with possibilities of controlling such events, the possibility of interaction the way on the part of the spectators of the digital television it will allow them intervening in the diffusion of information, which supposes a significant change for the hearing of the television. The companies must elaborate contents directed a users who are going to have access to will: it is necessary to offer them what want, when they want - this is VOD (video on demand) - Then the digital television not only is going to modify the way of doing television, but also the way of seeing television. The electronic market is guaranteeing positions in the commercial Spanish panorama, growth that becomes clear in the increase so much of the number of users as of the volume of business, of the number of economic operations by Internet and of the number of web pages of companies dedicated to the trade across the Net. This positive evolution of the market shows how a way technologically so new as it is Internet, has allowed that in only 15 years it could speak about a historical evolution of the same one. This makes foresee that the step and evolution of the electronic market from Internet to the digital television could have a similar evolution in acceptance and consolidation. Finally, the future of the electronic commerce not only is subject to the appearance of new commercial models, but also to the technology; this way, the following step, technologically speaking, it is that of the digital television, which interactive and to allow to the user a use similar to that of Internet, does to the being that the challenge of the electronic trade is to go on to this way and to evolve in agreement with the characteristics of the same one. The first problem to which one is going to face this market is that of the user's change: in Spain the Internet user (according to the AECE, Spanish Association of Electronic Trade) is for the most part a male, with an age understood between 25 and 34 years; the television, nevertheless, is a very spread way and within reach of all, which will suppose a change both in the content and in the way of presenting the information (definitively, the product that is wanted to sell). El reto del comercio electrónico para el nuevo siglo va a ser el paso a la televisión digital, de manera que nos vamos a tener que adaptar al cambio de una televisión fundada en la difusión, a un conjunto de servicios de video digital basados en el acceso. De esta forma, el espectador de televisión se va a encontrar con la posibilidad de interactuar con el medio, lo que supone un cambio en la industria de la teledifusión, pues si bien hasta ahora eran las empresas distribuidoras de información y entretenimiento las únicas con posibilidades de controlar tales eventos, la posibilidad de interacción con el medio por parte de los espectadores de la televisión digital permitirá a estos intervenir en la difusión de información, lo que supone un cambio significativo para la audiencia de la televisión. Las empresas deben elaborar contenidos dirigidos a un usuario que va a tener acceso a voluntad: hay que ofrecerle lo que quiera, cuando quiera -es decir VOD (video on demand)- Luego la televisión digital no sólo va a modificar la forma de hacer televisión, sino también la forma de ver televisión. El mercado electrónico está afianzando posiciones en el panorama comercial español, crecimiento que se hace patente en el aumento tanto del número de usuarios como del volumen de negocio, del número de operaciones económicas por Internet y del número de páginas web de empresas dedicadas al comercio a través de la Red. Esta evolución positiva del mercado muestra cómo un medio tecnológicamente tan joven como es Internet, ha permitido que en apenas 15 años se pueda hablar de una evolución histórica del mismo. Esto hace prever que el paso y evolución del mercado electrónico desde Internet a la televisión digital pueda tener una evolución parecida en aceptación y consolidación. Finalmente, el futuro del comercio electrónico no sólo está sujeto a la aparición de nuevos modelos comerciales, sino también a la tecnología; así, el siguiente paso, tecnológicamente hablando, es el de la televisión digital, la cual por ser interactiva y permitir al usuario un uso parecido al de Internet, hace que el reto del comercio electrónico sea pasar a este medio y evolucionar de acuerdo con las características del mismo. Uno de los primeros problemas a los que se va a enfrentar este mercado es el del cambio de usuario: en España el usuario de Internet (según la AECE, Asociación Española de Comercio Electrónico)es mayoritariamente varón, con una edad comprendida entre 25 y 34 años; la televisión, sin embargo, es un medio muy difundido y al alcance de todos, lo que supondrá un cambio tanto en el contenido como en la forma de presentar la información (en definitiva, el producto que se desea vender).


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