简述视频监控系统的发展历程

本文简要介绍了视频监控系统所经历的发展阶段及各阶段的主要特点,并对今后的发展趋势进行了分析。

Construction of Quasi-Cyclic Low-Density Parity-Check Codes for Simplifying Shuffle Networks in Layered Decoder

Offset Shuffle Networks(OSNs) interleave a-posterior probability messages in the Block Row-Layered Decoder(BRLD) of QuasiCyclic Low-Density Parity-Check(QC-LDPC)codes.However,OSNs usually consume a significant amount of computational resources and limit the clock frequency,particularly when the size of the Circulant Permutation Matrix(CPM)is large.To simplify the architecture of the OSN,we propose a Simplified Offset Shuffle Network Block Progressive Edge-Growth(SOSNBPEG) algorithm to construct a class of QCLDPC codes.The SOSN-BPEG algorithm constrains the shift values of CPMs and the difference of the shift values in the same column by progressively appending check nodes.Simulation results indicate that the error performance of the SOSN-BPEG codes is the same as that of the codes in WiMAX and DVB-S2.The SOSNBPEG codes can reduce the complexity of the OSNs by up to 54.3%,and can improve the maximum frequency by up to 21.7%for various code lengths and rates.

下一代广播电视网络智能测量系统的研究

引言 目前，上海市正在推行数字电视整体转换工作，目标是在全网完成模拟电视信号转化为数字电视信号的同时，建设实现内容融合、平台融合、网络融合、业务融合、服务融合、终端融合等六个方面的平台。

再造经典——豪杰超级解霸V8

超级解霸是世纪豪杰计算机技术有限公司的拳头产品，被誉为“中国第一播放软件”，在国内拥有广泛用户群。继2003年4月发布极具收藏价值的五周年珍藏版后，超级解霸V8也于近期面市（以下简称V8），它距超级解霸3000“英雄版”的推出相隔正好一年，上市时间均选择在中国农历春节之前。