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高清视频会议系统是相对于传统的标准清晰度的视频会议系统而言的,高清视频会议系统中对于“高清晰”的定义则主要参照于广播电视行业对高清晰电视的界定。国内外对高清晰电视的界定还略有不同,美国高清的标准推出的较早,其规定720P(1280×720,逐行扫描)、1080i(1920×1080,隔行扫描)和1080p(1920×1080,逐行扫描)三种格式的图像为高清晰;而中国广电行业的高清标准则只包括1080i和1080p。“高清视频会议”的理念和产品是由国外厂家率先推出并进一步得到发展的,因此,目前行业内的主要产品还都是支持720P分辨率的产品。以下所提到的高清均指720P及以上的视频图像标准,高清视频会议系统是指能够采集、传输和显示高清晰图像的视频会议系统。
HD video conferencing system is relative to the traditional standard definition video conferencing systems, high definition video conferencing system for “high definition ” is mainly defined in the definition of high definition television in the broadcast television industry. The definitions of HDTV at home and abroad are still slightly different. The standard of HD in the United States was introduced earlier, which stipulated that 720P (1080P, 1920 × 1080, interlaced) and 1080p , Progressive scan) three formats of images for high definition; China’s broadcasting industry’s high-definition standards only include 1080i and 1080p. “HD video conferencing ” concept and products are the first to be introduced by foreign manufacturers and further development, therefore, the industry’s main products are also support 720P resolution products. The following HD refers to the 720P and above video image standards, high-definition video conferencing system is able to capture, transmit and display high-definition video conferencing system.