| 摘要 |
PROBLEM TO BE SOLVED: To enlarge and reduce video signals while reducing required memory capacity. SOLUTION: Inputted video signal data are successively written into three line memories 10a, 10b and 10c based on input side clock. Then, video signal data are successively read from the memories 10a, 10b and 10c, which are not written, based on output side clock. |
