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    Remote document scanner
    1.
    发明授权
    Remote document scanner 失效
    远程文件扫描仪

    公开(公告)号：US3584144A

    公开(公告)日：1971-06-08

    申请号：US3584144D

    申请日：1968-08-23

    Applicant: COGNITRONICS CORP

    Inventor： SHEPARD DAVID H ,  GUSHUE EDWARD J

    IPC: G06K9/20 ,  H04N1/028 ,  H04N1/113 ,  H04N3/08

    CPC classification number: H04N1/1135 ,  G06K9/2009 ,  H04N1/028

    Abstract: An optical scanning unit particularly adapted for use in remote optical character recognition systems or the like and including a document feed drum together with a rotating mirror arranged to sweep a narrow beam of light on a scan path across the drum while the latter is stationary between indexing steps, there being provided adjacent the scan path an elongate strip of semiconducting material of the PIN type arranged to produce electrical output signals in response to incident light reflected from the scanning sweep across the document, thereby to develop scan signals indicating the presence or absence of character elements along the scan path.

    Multiple-scanner character reading system
    2.
    发明授权
    Multiple-scanner character reading system 失效
    多扫描器字符读取系统

    公开(公告)号：US3582884A

    公开(公告)日：1971-06-01

    申请号：US3582884D

    申请日：1968-01-30

    Applicant: COGNITRONICS CORP

    Inventor： SHEPARD DAVID H

    IPC: G06K9/00 ,  G06K9/10 ,  H04N1/00

    CPC classification number: G06K9/00

    Abstract: A system comprising a central station having data processing apparatus with a common data buss arrangement interconnecting a data processor with its peripheral devices including a number of incoming data buffers. A plurality of remote desk top scanner units are connected to the central station, each being arranged to receive a document bearing graphic characters and to scan the characters on the document with an optical light beam so as to sweep the character area in a series of adjacent paths. Each remote scanner has means to develop scan signals representing the light reflected from the scanned document and to produce binary code groups indicating the scan distances between certain selected events such as white-to-black transitions. The code groups from each remote scanner are transmitted to a respective data buffer at the central station and subsequently are decoded to reconstruct the original video scan data in a form suitable for deciphering by character recognition means so as to identify the individual characters of the document. The central data processing apparatus, including decoding and character recognition means, operates on a time-sharing basis to service all of the remote units.

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