公开(公告)号：US3623070A

公开(公告)日：1971-11-23

申请号：US3623070D

申请日：1970-04-24

申请人： ULTRONIC SYSTEMS CORP

发明人： JOHNSON RONALD W ,  GEIB HARRY F

IPC分类号： H04L12/18 ,  G08B5/36

CPC分类号： H04L12/1804

摘要： Moving ticker display apparatus for displaying stock exchange transaction information employs an array of neon lamps arranged in rows and columns. Characters are formed on the extreme righthand column of the array, one vertical line at a time, and move from right to left at a variable rate. The rate at which characters are displayed and the rate at which information is received normally differs. A recirculating buffer receives incoming information and makes same available for further processing prior to visual presentation by the matrix. At least one stage of the buffer is always empty. A plurality of discretely different speeds are available for advancing the display across the array. The particular speed utilized at any time depends upon the number of stages in the buffer which are filled at the time. Digital speed selector means, responsive to this number, selects the appropriate one of these speeds for use.