摘要
介绍一种具有优良性能价格比的多模式可寻址加解扰付费电视系统，本系统引入了较长周期的伪随机序列作为加扰控制序列，使加扰图象具有较好的还原性和较强的隐匿性。该系统经过广电部检测中心的测试和上网试验，指标符合ＧＹ／Ｔ１１４国家行业标准。
This paper presents a multi mode addressable scrumbling/descrumbling pay TV system with excellent cost effectiveness.Psudeo random sequence with relatively long cycle is introduced as scrumbling/descrumbling control sequence in this system so that scrumbled pictures have better recovery ability and hiding power.The system has been tested by the test center of the Ministry of Radio,TV and Films,and it is in compliance with Chinese industrial standard GY/T114.
出处
《电视技术》
北大核心
1997年第9期35-38,共4页
Video Engineering
关键词
有条件接收
付费电视系统
可寻址
加解扰
Conditional access Scrumbled/descrumbled TV signal Recovery Hiding power
