Recording and reproducing device of color video signal

Abstract

Abstract PURPOSE:To align completely the time axis of a color difference signal with a luminance signal without increasing the scale of circuit by writing and reading a compressed color difference signal to a memory element 21 based on a synchronizing signal inserted respecively in the compressed color difference signal and the luminance signal. CONSTITUTION:CCD memories 21A, 21C are write/read only memories for a red compressed color difference signal and CCD memories 21B, 21D are write/read only memories to a blue compressed color difference signal. When the 21C and 21D are at the write mode, the 21A, 21B are respectively at the read mode, and when the 21A, 21B are at the write mode similarly, the 21C, 21D are respectively at the read mode and red and blue color difference signals R-Y and B-Y whose time axis is expanded twice are read. In writing a compressed color difference signal S'c to a memory element 21, the signal is written in the timing of a write zero pulse PR formed based on the 2nd synchronizing signal PR2 and in reading the signal, the signal is read in the timing of a read zero pulse PR formed based on the 1st synchronizing signal PR1 inserted in a luminace signal SY.

Inventors

• 👤 Kazuo Ishizaka
• 👤 和夫 石坂
• 👤 Kenji Nakamura
• 👤 健次 中村
• 👤 Makoto Ishiodori
• 👤 石踊　誠

Bibliographic Details