公开(公告)号：US3721974A

公开(公告)日：1973-03-20

申请号：US3721974D

申请日：1971-05-13

Applicant: STEWART WARNER CORP

Inventor： SOBCHAK F ,  JENIFER R ,  PAYNE R

IPC: G09F9/307 ,  G09G3/24 ,  G09F9/32

CPC classification number: G09G3/24 ,  G09F9/307

Abstract: A MESSAGE DISPLAY SYSTEM IN WHICH ALPHA NUMERIC MESSAGES AND PICTORIAL OR GRAPHIC REPRESENTATIONS ARE FORMED. A DISPLAY BOARD FORMED OF A MATRIX OF DISPLAY ELEMENTS SUCH AS LAMPS IS CONTROLLED BY MEANS OF DIGITAL SIGNALS. WHILE THE ALPHA NUMBERIC MESSAGES ARE READ INTO THE SYSTEM BY WELL KNOWN INPUT MEANS, THE PICTORIAL REPRESENTATIONS ARE FORMED BY A UNIQUE DEVICE WHICH OPTICALLY VIEWS A DRAWING OR PRINTED PICTURE AND CREATES DIGITAL SIGNALS WHICH ARE PROCESSED TO DISPLAY THE DRAWING OR PRINTED PIXTURE ON THE DISPLAY BOARD OR STORED FOR SUBSEQUENT DISPLAY.