2.3 系统模块描述............................................................................8
2. 3. 1 执法记录系统........................................................................8
2. 3. 2 云存储系统..........................................................................8
2. 3. 3 云传输中心端........................................................................8
2. 3. 4 流媒体服务器集群.....................................................................8
2. 3. 5 客户端.............................................................................8
3 系统方案...................................................................................10
3. 1 视频采集方案..........................................................................10
3. 1. 1 执法记录仪简介......................................................................10
3. 1. 2 系统功能描述.......................................................................10
3. 1. 2. 1 执法记录仪......................................................................10
3. 1. 2. 2 采集工作站......................................................................11
3. 1. 2. 3 管理平台系统....................................................................12
3. 2 云存储方案............................................................................14
3. 2. lcStor 简介........................................................................14
3. 2. 2 系统基本组成.......................................................................15
3. 2. 3 系统功能描述.......................................................................16
3. 2. 3. 1 cStor 分布式文件系统.............................................................17
3. 2. 3. 2 存储访问接口....................................................................18
3. 2. 3. 3 管理监控中心....................................................................18
3. 2. 4cStor 主要优势......................................................................22
＞高可靠性................................................................................22
＞高性能..................................................................................22
＞在线伸缩................................................................................23
＞通用易用................................................................................23
＞智能管理................................................................................23
3. 2. 5 关键技术...........................................................................23
3. 2. 5.1 负载自动均衡技术..................................................................23
3. 2. 5. 2 高速并发访问技术.................................................................24
3. 2. 5. 3 高可靠性保证技术.................................................................24
3. 2. 5. 4 高可用技术......................................................................24
3.3 云传输方案.............................................................................25
3. 3. 1 cTrans 简介......................................................................25
3. 3. 2 关键技术...........................................................................26
3. 3. 3 总体结构...........................................................................27
3. 3. 4 功能组件...........................................................................29
3. 3. 4. 1 数据传输引擎....................................................................29
3. 3. 4. 2 资源索引服务....................................................................29
3. 3. 4. 3 文件处理组件....................................................................30
3. 3. 4. 4 用户应用终端....................................................................30
3. 3. 5 接口与集成.........................................................................31
3. 3. 5. 1 云传输组件形态...................................................................31
3. 3. 5. 2 用户权限验证....................................................................31
3. 3. 5. 3 传输任务启动接口.................................................................31
3. 3. 5. 4 传输状态通知接口.................................................................32
3. 3. 5. 5 集群处理接口....................................................................32
3.4 云点播方案.............................................................................33
3. 4.1 流媒体模块..........................................................................33
3. 4. 1. 1 流媒体集群工作流程图..............................................................33
3. 4. 1. 2 视频流实时转发...................................................................33
3. 4. 1. 3 历史视频数据推送.................................................................34
3. 4. 2 流媒体服务器集群系统构架.............................................................34
3. 4. 3 流媒体负载均衡......................................................................35
3. 4. 4 视频流分发功能......................................................................37
3. 4. 5 流媒体服务器性能....................................................................37
