This allows pin distortion and barrel distortion as well as trapezial distortion to be corrected by remote control in the back-projection image display device ( 1 ) .

由此，在背投式图像显示装置（1）中可以实现 基于远程操作的 枕 形失真、鼓 形失真和不 等腰 梯形失真的校正。