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  • 什么是AHD?
    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    位置:首页 > 车载高清监控首选,AHD模拟高清 720P车载 百万高清车载
    车载高清监控首选,AHD模拟高清 720P车载 百万高清车载
    发布人: 发布日期:2016-4-27 15:14:19 浏览: 83 人次

    AHD作为安防高清领域的新生产品和技术,引起了业内人士的广泛关注。很多人还不完全清楚AHD究竟是什么?

    AHD( Anolog high definition),模拟高清新定义, AHD技术能够在已有的模拟传输线上实现超长距离(500米)高清视频信号的可靠传输;其采用先进的Y/C信号分离和模拟滤波技术,可以有效的减少高频区 的色噪声,图像还原性更好。对比传统的模拟高清产品,AHD的监控图像质量有着质的飞跃和提升,最高清晰度可等同于网络高清1080P的全高清级别。
    AHD产品主要包括AHD前端产品系列、AHD后端产品系列、AHG前端产品及AHB后端产品四大部分,兼容普遍D1/960H,AHD前端芯片ISP与TX二合一,更经济更稳定,功耗更低。

    1、AHD之三大格式:
    AHD08:清晰度(TVL)远高于传统模拟960H略低于网络高清720P;
    AHD10:清晰度(TVL)等同于网络高清720P级别; 
    AHD20:清晰度(TVL)等同于网络高清1080P的全高清级别;
    (AHD08:  Image definition between 960H and 720P, Max to 800TVL
    AHD10:  Image definition of AHD is equals to 720P IP camera
    AHD20:  Image definition up to 1080P IP Camera)
    2、AHD产品八大特点:
    ①更清晰: 先进的亮色分离、信号滤波、3D降噪技术,图像清晰度更高,图像还原性更好 ②传的远 采用同轴传输普通75-3线可达500米
    ③零延时:前端数据未经过编码压缩到后端,全实时,高保真
    ④兼容好:兼容普通D1/960H,兼容模拟外围设备(含分配器、矩阵等)
    ⑤易操作:支持OSD菜单设计,随你所想,设你所需
    ⑥低成本:普通模拟的价格,高清品质的产品
    ⑦高集成: AHD前端芯片的价格,高清品质的产品
    ⑧开放标准:第三方开放标准开放
    亮点:高清晰、低成本、远距离、无延时、抗干扰、易操作。
    一、概念

    Analog High Definition意思为模拟高解析度。关于High Definition,简单来说,我们通常会把物理分辨率达到720p以上的格式则称作为高清,简称HD。其指的画面垂直解析度为1080i、720p或1080p。1080i就是指解析度为1920×1080,采交错扫描,每秒呈现30个完整画面;720p就是指解析度达1280×720,采循序逐行扫描,每秒呈现60个完整画面;1080p就是指解析度达1920×1080,采循序扫描,每秒呈现60个完整画面。

    而AHD是基于AHD协议,采用模拟同轴电缆传输逐行扫描的高清视频 

    二、特征

    AHD跟传统设备一样操作简单方便,用普通75-3类同轴线便可进行远达500米高清无损传输,突破了高清视频现有传输技术的传输极限,能实现低成本、长距离、无延时、高效率、抗干扰且易实施的百万像素级高清视频传输。

    三、应用范围

    AHD沿袭模拟标清传输的途径和方法,可减少施工部署的复杂度,降低辅材成本及维护复杂度,以及对施工人员的技术要求。非常适用于旧系统的升级改造,可在不改变原有系统的基础上,将标清轻松升级为高清。此外,高清品质标清价格,让AHD在民用及工业级市场中都拥有非常大的发展空间。

    四、发展前景

    AHD无疑是车载监控市场及高清市场的又一次技术革新,车载高清监控首选,并将成为安防市场新的趋势。

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