公开(公告)号：US5635726A

公开(公告)日：1997-06-03

申请号：US545298

申请日：1995-10-19

Applicant: James M. Zavislan ,  Scott R. Grodevant

Inventor： James M. Zavislan ,  Scott R. Grodevant

IPC: G06K7/015 ,  G06K7/10 ,  G06K7/14 ,  G07C13/00 ,  H01L31/12 ,  H03F1/34 ,  H03F3/08 ,  G01N21/86

CPC classification number: G06K7/1092 ,  G06K7/015 ,  G06K7/10722 ,  G06K7/10861 ,  G06K7/14 ,  G07C13/00

Abstract: An electro-optical sensor senses marks on a sheet which travels longitudinally with respect to a printed circuit board, carrying linear arrays of light sources (LEDs) and photodetectors and optics which define zones displaced laterally across the width of a sheet of paper, longitudinal columns of which can contain marks, the presence and absence of which marks is detected by the sensor. The sensor is especially adapted for use in detecting marks which indicate votes on paper ballots in electronic, computerized vote counting apparatus.

Abstract translation: 电光传感器感测相对于印刷电路板纵向移动的片材上的标记，承载光源（LED）和光电检测器和光学器件的线性阵列，所述光学元件和光学器件限定横向跨越纸张宽度的纵向列 其中可以包含标记，传感器检测到哪些标记的存在和不存在。 传感器特别适用于检测在电子计算机投票计数装置中表示投票的标记。