Digital processing unit of color video signal

Abstract

Abstract PURPOSE:To produce a component coding signal only with a single A/D converter by transmitting a luminance signal to one of an odd and an even number field and a color difference signal to the other. CONSTITUTION:A composite color video signal incoming to an input terminal 1 is separated into a luminance signal and two kinds of color difference signals at a decoder 2, and based on the switching signal from a controller 4, the luminance signal is selected and outputted at, e.g., an odd number field period and the color difference signal is selected and outputted at an even number field period and are converted into a picture element data by the single A/D converter 6. A switching circuit 7 is switched at each field period and the picture element data of the luminance signal and the color difference signals are stored sequentially in a memory circuit 8. The luminance signal and the color difference signals are extracted sequentially from the stored data by D/A converters 9, 10, converted into an analog signal and applied to an encoder 11, and synchronized and converted into a chrominance carrier signal and outputted.

Inventors

• 👤 Hiroyuki Sugiyama
• 👤 博之 杉山
• 👤 Nobuaki Takahashi
• 👤 宣明 高橋
• 👤 Takeshi Shibamoto
• 👤 柴本　猛
• 👤 Shunichi Shichijo
• 👤 俊一 七條
• 👤 Koji Tanaka
• 👤 耕治 田中
• 👤 Yoshiaki Amano
• 👤 天野　良昭

Bibliographic Details