著者

清水 康夫 金井 智良

出版者

一般社団法人 映像情報メディア学会

雑誌

テレビジョン学会誌 (ISSN:03866831)

巻号頁・発行日

vol.50, no.9, pp.1397-1402, 1996-09-20 (Released:2011-03-14)

参考文献数

4

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Hi-Vision products have become very popular as the technology has been developed. Consequently, there is a growing demand for a Hi-Vision video camera View-Finder. We have developed a monochrome CRT that can be used as a Hi-Vision View-Finder. In this paper, we will discuss the key technologies of this CRT.(1) Steps taken to improve resolution.(a) Improved glass bulb which can take a high voltage.(b) Improved phosphor screen.(c) Improved electron gun.(2) Steps taken to improve circuitry. We have developed : (a) A wide band video circuit, a stable deflection circuit, and a high-voltage circuit.(b) A precision beam correction method based on a unique digital circuit.We have achieved our target specification for this prototype and have confirmed that the CRT can be used for Hi-Vision View-Finder applications.