公开(公告)号：US3591939A

公开(公告)日：1971-07-13

申请号：US3591939D

申请日：1969-08-04

申请人： PERIPHERAL DATA MACHINES INC

发明人： PAYNE ERROL G ,  MCGREGOR CHARLES D

IPC分类号： G09F9/37 ,  G09G3/00 ,  G09G3/34 ,  G09F9/40

CPC分类号： G09G3/00 ,  G09F9/375 ,  G09G2300/0473

摘要： A display board comprising a mosaic of bistable magnetic elements is swept by a linear array of electromagnets pulsed selectively to form an image. Each magnetic element is a sealed humped duct containing magnetic powder pulled to the rear of the duct by a common magnetic erasing bar. Means are also disclosed for optically converting an image into electric pulses which are used to drive the electromagnets to reproduce that image upon the display board.

公开(公告)号：US3460276A

公开(公告)日：1969-08-12

申请号：US3460276D

申请日：1968-09-16

申请人： PERIPHERAL DATA MACHINES INC

发明人： PAYNE ERROL G

IPC分类号： B29C51/10 ,  G09F9/37 ,  B43L1/00 ,  C09F11/00

CPC分类号： G09F9/375 ,  B29C51/10