| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a low-cost device by alternately selecting 1st and 2nd stages which read data that is written at a double writing speed after writing G1 and G2 channels in four CCDs for 0.5H period when a camera output signal and the number of vertical lines are multiplied. SOLUTION: A 1st FIFO memory 210 has 0.5 vertical line size, writes G1 data that corresponds to 0.5H and reads data that is stored at a double writing speed. A 2nd FIFO memory 220 writes G2 data that corresponds to 0.5H and reads data that is stored at a double writing speed. A multiplexer 230 selects outputs of the 1st or 2nd FIFO memory in accordance with a selective control signal and outputs a G signal of a wide band. By this, delay between signals does not exist in an HDTV camera using four CCDs. Also, when a line double speed device of a G channel signal is embodied, line memory are reduced from four H to one H and this device becomes inexpensive.</p> |
