青浦摄像头 青浦监控产品 青浦监控维护
青浦摄像头 青浦监控产品 青浦监控维护<br />
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<div><span style="font-size: 9pt; color: #454545">高清监控摄像机带来哪些新理念与新应用</span><span style="font-size: 9pt; color: #454545"><br />
</span><span style="font-size: 9pt; color: #454545">随着社会的发展，安防行业涌现出更多的需求，尤其是视频监控行业，伴随着网络化和数字化大潮，涌现出很多新科技，除了近两年异常火爆的</span><span style="font-size: 9pt; color: #454545">"</span><span style="font-size: 9pt; color: #454545">智能视频分析</span><span style="font-size: 9pt; color: #454545">"</span><span style="font-size: 9pt; color: #454545">技术外，</span><span style="font-size: 9pt; color: #454545">"</span><span style="font-size: 9pt; color: #454545">百万像素高清摄像机</span><span style="font-size: 9pt; color: #454545">"</span><span style="font-size: 9pt; color: #454545">也渐渐进入安防人的视野，大家都在关注它能给我们带来哪些新理念、新应用和新价值。</span><span style="font-size: 9pt; color: #454545"><br />
</span><span style="font-size: 9pt; color: #454545">高清摄像机概念</span><span style="font-size: 9pt; color: #454545"><br />
"</span><span style="font-size: 9pt; color: #454545">高清</span><span style="font-size: 9pt; color: #454545">"</span><span style="font-size: 9pt; color: #454545">，英文为</span><span style="font-size: 9pt; color: #454545">"HighDefinition"</span><span style="font-size: 9pt; color: #454545">，缩写为</span><span style="font-size: 9pt; color: #454545">"HD"</span><span style="font-size: 9pt; color: #454545">。高清实际上是数字电视技术、先进的像素与分辨率技术和广播技术等多项技术的共同结晶。</span><span style="font-size: 9pt; color: #454545"><br />
</span><span style="font-size: 9pt; color: #454545">普通模拟电视依靠带有调制的连续电压来传输图像，而数字电视则采用与计算机相同的数字编码方式，对图像和声音进行处理。使得图像更加清晰，色彩更加鲜艳。但是，数字电视要达到高清水平，不仅需要电视机是数字高清，还得依靠高清信号的制作技术和发射数字高清信号的设备。</span><span style="font-size: 9pt; color: #454545"><br />
</span><span style="font-size: 9pt; color: #454545">在监控行业存在</span><span style="font-size: 9pt; color: #454545">"</span><span style="font-size: 9pt; color: #454545">标清</span><span style="font-size: 9pt; color: #454545">"</span><span style="font-size: 9pt; color: #454545">与</span><span style="font-size: 9pt; color: #454545">"</span><span style="font-size: 9pt; color: #454545">高清</span><span style="font-size: 9pt; color: #454545">"</span><span style="font-size: 9pt; color: #454545">之分，两者之间的分界线就是百万像素或</span><span style="font-size: 9pt; color: #454545">720p</span><span style="font-size: 9pt; color: #454545">，达到百万像素或</span><span style="font-size: 9pt; color: #454545">720p</span><span style="font-size: 9pt; color: #454545">的称之为高清。</span><span style="font-size: 9pt; color: #454545"><br />
</span><span style="font-size: 9pt; color: #454545">高清可分为以下几种模式：</span><span style="font-size: 9pt; color: #454545"><br />
(1)1080i</span><span style="font-size: 9pt; color: #454545">格式，是标准数字电视显示模式。</span><span style="font-size: 9pt; color: #454545">1125</span><span style="font-size: 9pt; color: #454545">条垂直扫描线，</span><span style="font-size: 9pt; color: #454545">1080</span><span style="font-size: 9pt; color: #454545">条可见垂直扫描线，</span><span style="font-size: 9pt; color: #454545">16</span><span style="font-size: 9pt; color: #454545">：</span><span style="font-size: 9pt; color: #454545">9</span><span style="font-size: 9pt; color: #454545">，分辨率为</span><span style="font-size: 9pt; color: #454545">1920×1080</span><span style="font-size: 9pt; color: #454545">，隔行</span><span style="font-size: 9pt; color: #454545">/60Hz</span><span style="font-size: 9pt; color: #454545">，行频为</span><span style="font-size: 9pt; color: #454545">33.75KHz</span><span style="font-size: 9pt; color: #454545">。</span><span style="font-size: 9pt; color: #454545"><br />
(2)720p</span><span style="font-size: 9pt; color: #454545">格式，是标准数字电视显示模式。</span><span style="font-size: 9pt; color: #454545">750</span><span style="font-size: 9pt; color: #454545">条垂直扫描线，</span><span style="font-size: 9pt; color: #454545">720</span><span style="font-size: 9pt; color: #454545">条可见垂直扫描线，</span><span style="font-size: 9pt; color: #454545">16</span><span style="font-size: 9pt; color: #454545">：</span><span style="font-size: 9pt; color: #454545">9</span><span style="font-size: 9pt; color: #454545">，分辨率为</span><span style="font-size: 9pt; color: #454545">1280×720</span><span style="font-size: 9pt; color: #454545">，逐行</span><span style="font-size: 9pt; color: #454545">/60Hz</span><span style="font-size: 9pt; color: #454545">，行频为</span><span style="font-size: 9pt; color: #454545">45KHz</span><span style="font-size: 9pt; color: #454545">。</span><span style="font-size: 9pt; color: #454545"><br />
(3)1080p</span><span style="font-size: 9pt; color: #454545">格式，是标准数字电视显示模式。</span><span style="font-size: 9pt; color: #454545">1125</span><span style="font-size: 9pt; color: #454545">条垂直扫描线，</span><span style="font-size: 9pt; color: #454545">1080</span><span style="font-size: 9pt; color: #454545">条可见垂直扫描线，</span><span style="font-size: 9pt; color: #454545">16</span><span style="font-size: 9pt; color: #454545">：</span><span style="font-size: 9pt; color: #454545">9</span><span style="font-size: 9pt; color: #454545">，分辨率为</span><span style="font-size: 9pt; color: #454545">1920×1080</span><span style="font-size: 9pt; color: #454545">逐行扫描，专业格式。</span><span style="font-size: 9pt; color: #454545"><br />
</span><span style="font-size: 9pt; color: #454545"><font color="#000000">青浦摄像头 青浦监控产品 青浦监控维护</font><br />
高清相对于标清来说更有优势，从分辨率来看，</span><span style="font-size: 9pt; color: #454545">720p</span><span style="font-size: 9pt; color: #454545">的分辨率是</span><span style="font-size: 9pt; color: #454545">CIF</span><span style="font-size: 9pt; color: #454545">分辨率的</span><span style="font-size: 9pt; color: #454545">9</span><span style="font-size: 9pt; color: #454545">倍、</span><span style="font-size: 9pt; color: #454545">1080i/1080p</span><span style="font-size: 9pt; color: #454545">的分辨率是</span><span style="font-size: 9pt; color: #454545">CIF</span><span style="font-size: 9pt; color: #454545">分辨率的</span><span style="font-size: 9pt; color: #454545">20</span><span style="font-size: 9pt; color: #454545">倍，在同样的显示环境下，高清会清晰得多。从显示效果来看，高清既支持大屏显示，又支持</span><span style="font-size: 9pt; color: #454545">16</span><span style="font-size: 9pt; color: #454545">：</span><span style="font-size: 9pt; color: #454545">9</span><span style="font-size: 9pt; color: #454545">宽屏显示，可以大大增强用户的观看体验。从流畅度来看，高清支持更高的帧率，比如</span><span style="font-size: 9pt; color: #454545">720p</span><span style="font-size: 9pt; color: #454545">和</span><span style="font-size: 9pt; color: #454545">1080i/1080p</span><span style="font-size: 9pt; color: #454545">都可以支持</span><span style="font-size: 9pt; color: #454545">60</span><span style="font-size: 9pt; color: #454545">帧</span><span style="font-size: 9pt; color: #454545">/</span><span style="font-size: 9pt; color: #454545">秒或</span><span style="font-size: 9pt; color: #454545">60</span><span style="font-size: 9pt; color: #454545">场</span><span style="font-size: 9pt; color: #454545">/</span><span style="font-size: 9pt; color: #454545">秒，其图像流畅度比标清要高一倍。所以，高清监控是监控行业发展最主流的趋势之一。</span><span style="font-size: 9pt; color: #454545"><br />
</span><span style="font-size: 9pt; color: #454545">高清摄像的发展阶段</span><span style="font-size: 9pt; color: #454545"><br />
</span><span style="font-size: 9pt; color: #454545">数字显示技术的发展分三个时代：</span><span style="font-size: 9pt; color: #454545"><br />
</span><span style="font-size: 9pt; color: #454545">第一代是可接驳数字信号的模拟电视机或监视器，或称作可接收</span><span style="font-size: 9pt; color: #454545">1080i</span><span style="font-size: 9pt; color: #454545">、</span><span style="font-size: 9pt; color: #454545">720P</span><span style="font-size: 9pt; color: #454545">、</span><span style="font-size: 9pt; color: #454545">1080P</span><span style="font-size: 9pt; color: #454545">的</span><span style="font-size: 9pt; color: #454545">"</span><span style="font-size: 9pt; color: #454545">格式高清</span><span style="font-size: 9pt; color: #454545">"</span><span style="font-size: 9pt; color: #454545">电视机或监视器。目前电视按信号传输可以分为模拟电视和数字电视两大类，模拟电视载波传输的为模拟信号，可以达到</span><span style="font-size: 9pt; color: #454545">325</span><span style="font-size: 9pt; color: #454545">线，数字电视载波传输的为数字信号，可以达到</span><span style="font-size: 9pt; color: #454545">1080</span><span style="font-size: 9pt; color: #454545">线。</span><span style="font-size: 9pt; color: #454545"><br />
</span><span style="font-size: 9pt; color: #454545">第二代高清是</span><span style="font-size: 9pt; color: #454545">"</span><span style="font-size: 9pt; color: #454545">芯片高清</span><span style="font-size: 9pt; color: #454545">"</span><span style="font-size: 9pt; color: #454545">。准确地说，引擎高清的芯片在电视机或监视器内部实现了对信号的数字处理。所谓的数字处理，就是可以对接入的模拟信号转化为数字信号，也可以直接接驳输入的数字信号。</span><span style="font-size: 9pt; color: #454545"><br />
</span><span style="font-size: 9pt; color: #454545">无论输入方式是模拟还是数字，在内部的处理方式都是数字的。除了要有数字高清的接口、能处理数字电视的芯片外，还要有能显示高清信号的屏或显像管。</span><span style="font-size: 9pt; color: #454545"><br />
</span><span style="font-size: 9pt; color: #454545">第三代数字高清是</span><span style="font-size: 9pt; color: #454545">"</span><span style="font-size: 9pt; color: #454545">显示高清</span><span style="font-size: 9pt; color: #454545">"</span><span style="font-size: 9pt; color: #454545">，数字电视显示垂直清晰度可达到</span><span style="font-size: 9pt; color: #454545">720</span><span style="font-size: 9pt; color: #454545">线，部分数字高清电视机使用了特制的</span><span style="font-size: 9pt; color: #454545">1080PTV</span><span style="font-size: 9pt; color: #454545">面板和先进的引擎系统，这类产品完全具备了</span><span style="font-size: 9pt; color: #454545">1080P</span><span style="font-size: 9pt; color: #454545">显示能力，清晰度比普通高清显示提高</span><span style="font-size: 9pt; color: #454545">50%</span><span style="font-size: 9pt; color: #454545">，并能接收和显示较低格式的信号，画面效果比</span><span style="font-size: 9pt; color: #454545">1080i</span><span style="font-size: 9pt; color: #454545">、</span><span style="font-size: 9pt; color: #454545">720P</span><span style="font-size: 9pt; color: #454545">两种格式更清晰、更稳定。比如：美电贝尔的百万高清摄像机</span><span style="font-size: 9pt; color: #454545">BL-E800H-131/3</span><span style="font-size: 9pt; color: #454545">〃</span><span style="font-size: 9pt; color: #454545">SONYCCD</span><span style="font-size: 9pt; color: #454545">，支持</span><span style="font-size: 9pt; color: #454545">P/N</span><span style="font-size: 9pt; color: #454545">制式，图像压缩格式</span><span style="font-size: 9pt; color: #454545">H.264/MPEG4/M-JPEG</span><span style="font-size: 9pt; color: #454545">标准，音频采用</span><span style="font-size: 9pt; color: #454545">G.726</span><span style="font-size: 9pt; color: #454545">压缩标准，支持</span><span style="font-size: 9pt; color: #454545">12.5fps(1280*960)</span><span style="font-size: 9pt; color: #454545">、</span><span style="font-size: 9pt; color: #454545">25fps(1280*720)/D1/HD1/CIF/QCIF/VGA/QVGA</span><span style="font-size: 9pt; color: #454545">分辨率，支持本地热手插拔闪存卡存储，可选配</span><span style="font-size: 9pt; color: #454545">3G</span><span style="font-size: 9pt; color: #454545">网络</span><span style="font-size: 9pt; color: #454545">(</span><span style="font-size: 9pt; color: #454545">三家运营商</span><span style="font-size: 9pt; color: #454545">)</span><span style="font-size: 9pt; color: #454545">与</span><span style="font-size: 9pt; color: #454545">WIFI</span><span style="font-size: 9pt; color: #454545">无线网传输，支持</span><span style="font-size: 9pt; color: #454545">POE</span><span style="font-size: 9pt; color: #454545">供电，网络接口：</span><span style="font-size: 9pt; color: #454545">RJ-45</span><span style="font-size: 9pt; color: #454545">、</span><span style="font-size: 9pt; color: #454545">10/100BASET</span><span style="font-size: 9pt; color: #454545">，网络协议</span><span style="font-size: 9pt; color: #454545">TCP/IP</span><span style="font-size: 9pt; color: #454545">，防雷设计，标配电源</span><span style="font-size: 9pt; color: #454545">DC12V2A</span><span style="font-size: 9pt; color: #454545">，真正实现</span><span style="font-size: 9pt; color: #454545">1080</span><span style="font-size: 9pt; color: #454545">的高清效果。</span></div>
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