ZIGZAG SCAN-ALTERNATE SCAN CONVERTING CIRCUIT

摘要

PROBLEM TO BE SOLVED: To accelerate operating speed by composing a circuit only of a circuit using the regularity of scanning address patterns. SOLUTION: A sequential address generating part 21 inputs a start signal, clock signal and control signal and generates sequential addresses. A scanning address generating part 22 inputs a start signal, a clock signal and a control signal and generates a zigzag scanning address signal and an alternate scanning address signal. Based on the control signal, the 1st and the 2nd multiplexers 23 select the respective address signals from both address generating parts 21 and 22. A latch part 24 outputs the selected address signal while controlling timing.