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日本广播公司(NHK)已研制出高清晰度彩色电视摄象机,其灵敏度与NTSC摄象机接近相同。此摄象机和Ikezami Tsushinki公司共同研制,松下公司协助研制摄象管,佳能和富士公司提供透镜部分。摄象机用1.25英寸氧化铅管代替现用的1英寸管,用磁聚焦和静电偏转代替磁偏转。通过在前置放大器中采用GaAs FET提高了信噪比和图象质量。
Nippon Broadcasting Company (NHK) has developed high-definition color TV cameras, the sensitivity and NTSC cameras close to the same. The camera and Ikezami Tsushinki company jointly developed, Panasonic company to assist the development of the camera tube, Canon and Fuji lens parts. The camera uses a 1.25-inch lead oxide tube instead of the current 1-inch tube, replacing magnetic deflection with magnetic focusing and electrostatic deflection. By using GaAs FETs in the preamplifier, signal-to-noise ratio and image quality are improved.