M7集团DVB-S2快速扫描规范V5.1详解

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“DVB-S2 Fast Scanning Spec v5 1 January 2014.pdf”是一份关于数字卫星电视(DVB-S2)快速扫描技术的规范文档,由M7集团发布,主要针对荷兰、比利时、奥地利、捷克/斯洛伐克共和国、匈牙利和卢森堡的频道列表设计。文档描述了国家选择机制和频道列表的格式,旨在简化初次安装和后续的频道更新过程。 快速扫描(Fastscan)是DVB-S2系统中的一个重要功能,它允许用户迅速定位和接收卫星电视服务中的频道。在V5.1版本中,此功能得到了进一步优化和扩展,以满足多卫星接收和不同订阅级别的需求。 从文档的历史版本中可以看出,快速扫描技术的发展经历了多次迭代: - 版本1.0:首次发布了FNT/FST(Fast Navigation Table/ Fast Scan Table)规范,奠定了快速扫描的基础。 - 版本1.1:增加了DiSEqC(Digital Set-top Box Control)控制,支持多卫星接收,如Canal Digitaal和TV-Vlaanderen可以在Astra 23.5°E卫星上发射频道。 - 版本2.1:区分了SD(标准清晰度)和HD(高清晰度)频道的列表。 - 版本2.2:更新了PID(Packet Identifier)值。 - 版本2.3:添加了根据订阅选择HD或SD列表的用户选项,并对交付系统描述符进行了规定。 - 版本2.3bis:修正了Astra 2卫星的轨道位置。 - 版本3.1:升级为M7版本,引入了国家选择机制。 - 版本3.2:再次修正了Astra 2的轨道位置,调整了TéléSAT的MOP/OPI(Modulation and Orbital Position Indicator)设置,修改了TéléSAT比利时的DiSEqC设置,同时增加了手动选择国家的机制和自动更新机制。 - 版本3.3:添加了奥地利Sat和CSLink的支持。 - 版本3.4:增加了Skylink的支持,引入了S2卫星交付系统描述符,并加入了关于版权费用的章节。 - 版本3.4之后:继续修正了一些错误,如FST版本号的更新。 DVB-S2快速扫描机制的核心在于其能够快速高效地检测和解析卫星信号,通过预定义的国家列表和频道信息,使得接收设备可以自动识别并加载用户所在地区的频道,大大简化了用户的操作流程。此外,随着版本的升级,快速扫描不仅考虑了不同清晰度的频道需求,还加入了多卫星接收、订阅级别选择以及手动和自动更新等功能,以适应不断变化的卫星电视市场环境。 DVB-S2 Fast Scanning Spec v5.1是数字卫星电视领域的一个关键规范,它的设计与实施显著提升了用户体验,特别是对于那些需要频繁进行频道更新和切换的用户来说。

执行mvn clean install出现[INFO] Scanning for projects... [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building springboot-schema 0.0.1-SNAPSHOT [INFO] ------------------------------------------------------------------------ Downloading: http://repo.maven.apache.org/maven2/org/springframework/boot/spring-boot-maven-plugin/2.2.2.RELEASE/spring-boot-maven-plugin-2.2.2.RELEASE.pom [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 7.419 s [INFO] Finished at: 2023-07-22T19:52:51+08:00 [INFO] Final Memory: 9M/245M [INFO] ------------------------------------------------------------------------ [ERROR] Plugin org.springframework.boot:spring-boot-maven-plugin:2.2.2.RELEASE or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.springframew ork.boot:spring-boot-maven-plugin:jar:2.2.2.RELEASE: Could not transfer artifact org.springframework.boot:spring-boot-maven-plugin:pom:2.2.2.RELEASE from/to central (http://repo.maven. apache.org/maven2): Failed to transfer file: http://repo.maven.apache.org/maven2/org/springframework/boot/spring-boot-maven-plugin/2.2.2.RELEASE/spring-boot-maven-plugin-2.2.2.RELEASE. pom. Return code is: 501 , ReasonPhrase:HTTPS Required. -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException PS C:\Users\16283\Desktop\springbootc8hzm>

2023-07-23 上传

帮我分析 Starting Nmap 7.60 ( https://nmap.org ) at 2023-05-29 22:03 ?D1ú±ê×?ê±?? NSE: Loaded 146 scripts for scanning. NSE: Script Pre-scanning. Initiating NSE at 22:03 Completed NSE at 22:03, 0.00s elapsed Initiating NSE at 22:03 Completed NSE at 22:03, 0.00s elapsed Initiating ARP Ping Scan at 22:03 Scanning 192.168.0.192 [1 port] Completed ARP Ping Scan at 22:03, 0.54s elapsed (1 total hosts) Initiating Parallel DNS resolution of 1 host. at 22:03 Completed Parallel DNS resolution of 1 host. at 22:03, 0.00s elapsed Initiating SYN Stealth Scan at 22:03 Scanning 192.168.0.192 (192.168.0.192) [1000 ports] Completed SYN Stealth Scan at 22:03, 3.16s elapsed (1000 total ports) Initiating Service scan at 22:03 Initiating OS detection (try #1) against 192.168.0.192 (192.168.0.192) Retrying OS detection (try #2) against 192.168.0.192 (192.168.0.192) NSE: Script scanning 192.168.0.192. Initiating NSE at 22:03 Completed NSE at 22:03, 0.00s elapsed Initiating NSE at 22:03 Completed NSE at 22:03, 0.00s elapsed Nmap scan report for 192.168.0.192 (192.168.0.192) Host is up (0.010s latency). All 1000 scanned ports on 192.168.0.192 (192.168.0.192) are closed MAC Address: 00:9A:CD:D9:EB:72 (Huawei Technologies) Too many fingerprints match this host to give specific OS details Network Distance: 1 hop TRACEROUTE HOP RTT ADDRESS 1 10.40 ms 192.168.0.192 (192.168.0.192) NSE: Script Post-scanning. Initiating NSE at 22:03 Completed NSE at 22:03, 0.00s elapsed Initiating NSE at 22:03 Completed NSE at 22:03, 0.00s elapsed Read data files from: C:\Program Files (x86)\Nmap OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ . Nmap done: 1 IP address (1 host up) scanned in 7.93 seconds Raw packets sent: 1151 (51.768KB) | Rcvd: 1124 (46.072KB)

2023-05-30 上传

"C:\Program Files\Java\jdk-1.8\bin\java.exe" -Dmaven.multiModuleProjectDirectory=F:\workmode\h5xjxj\ech-log-server\ech-log-api -Djansi.passthrough=true -Dmaven.home=F:\dev_software\apache-maven-3.6.3 -Dclassworlds.conf=F:\dev_software\apache-maven-3.6.3\bin\m2.conf "-Dmaven.ext.class.path=F:\idea2023\IntelliJ IDEA 2023.1.2\plugins\maven\lib\maven-event-listener.jar" "-javaagent:F:\idea2023\IntelliJ IDEA 2023.1.2\lib\idea_rt.jar=53993:F:\idea2023\IntelliJ IDEA 2023.1.2\bin" -Dfile.encoding=UTF-8 -classpath F:\dev_software\apache-maven-3.6.3\boot\plexus-classworlds-2.6.0.jar;F:\dev_software\apache-maven-3.6.3\boot\plexus-classworlds.license org.codehaus.classworlds.Launcher -Didea.version=2023.1.2 -s C:\Users\田文成\.m2\settings_XJ_git.xml -Dmaven.repo.local=F:\dev_software\repository\localRepository\localRepository install [INFO] Scanning for projects... [INFO] [INFO] -----------------------< com.ai.ecs:ech-log-api >----------------------- [INFO] Building ech-log-api 0.0.1-SNAPSHOT [INFO] --------------------------------[ jar ]--------------------------------- Downloading from nexus1: http://mgr.devstone.cn:18080/nexus/content/groups/public/org/apache/maven/plugins/maven-compiler-plugin/2.5.1/maven-compiler-plugin-2.5.1.pom [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 22.280 s [INFO] Finished at: 2023-07-12T16:30:43+08:00 [INFO] ------------------------------------------------------------------------ [ERROR] Plugin org.apache.maven.plugins:maven-compiler-plugin:2.5.1 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-compiler-plugin:jar:2.5.1: Could not transfer artifact org.apache.maven.plugins:maven-compiler-plugin:pom:2.5.1 from/to nexus1 (http://mgr.devstone.cn:18080/nexus/content/groups/public): Transfer failed for http://mgr.devstone.cn:18080/nexus/content/groups/public/org/apache/maven/plugins/maven-compiler-plugin/2.5.1/maven-compiler-plugin-2.5.1.pom: Connect to mgr.devstone.cn:18080 [mgr.devstone.cn/218.94.91.233] failed: Connection timed out: connect -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException 刚导入项目依赖报错

2023-07-13 上传