Special effect device

Abstract

Abstract PURPOSE: To realize the inversion effect of the special picture frame by setting the value obtained by subtracting the length of the 1st region from the length of the entire screen to the original value and then using the addresses which increase gradually to vary into zero after reaching the maximum address value and then increase furthermore. CONSTITUTION: Signal A and B are mixed at mixing amplifier 7, and the A- and B- signal regions are decided on the screen by the control signals. The mixed signals undergo the digital conversion through A/D converter and then written into digital memory 4. In that case, value M-L obtained by subtracting length L of region A from length M of the entire screen is set as the initial value and then increased gradually to vary into zero at the maximum level of the address and then increases furthermore. Such address is used. In this way, screen A shifts laterally and gradually by reading out yhe written picture signals with D/A conversion. At the same time, such screen conversion effect can be obtained that screen B emerges as if it were dragged by screen A. COPYRIGHT: (C)1979,JPO&Japio

Inventors

• 👤 Kazuo Kashiki

Bibliographic Details