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11 条记录 (耗时 0.014 秒)

    Method and device for identifying documents
    1.
    发明授权
    Method and device for identifying documents 失效
    识别文件的方法和装置

    公开(公告)号：US4211918A

    公开(公告)日：1980-07-08

    申请号：US913205

    申请日：1978-06-06

    申请人： Alex Nyfeler ,  David L. Greenaway ,  Heinz Lienhard

    发明人： Alex Nyfeler ,  David L. Greenaway ,  Heinz Lienhard

    IPC分类号： G07B11/02 ,  G06K5/00 ,  G06K7/00 ,  G06K7/10 ,  G06K7/12 ,  G06K17/00 ,  G06K19/16 ,  G02B5/18 ,  G06K19/00

    CPC分类号： G06K5/00 ,  G06K19/16 ,  Y10S283/904

    摘要： A method and device for identifying documents. A multiplicity of machine-readable markings which characteristically modify incident light by diffraction or refraction are applied to the documents, and selected markings are then cancelled out, the remaining markings representing coded information. The markings are of at least two different kinds causing different modification of incident light, and are arranged in a characteristic configuration on the documents. Information about said configuration is stored in an identification device to permit checking of the remaining markings.

    摘要翻译： 用于识别文件的方法和装置。 将通过衍射或折射特征地修改入射光的多个机器可读标记应用于文档，然后取消所选择的标记，剩余的标记表示编码信息。 这些标记至少有两种不同的形式，导致入射光的不同修改，并且被布置在文件上的特征配置中。 关于所述配置的信息被存储在识别装置中以允许检查剩余的标记。

    Device for the thermal erasure of mechanically readable optical markings
    3.
    发明授权
    Device for the thermal erasure of mechanically readable optical markings 失效
    机械可读光学标记的热擦除装置

    公开(公告)号：US4376887A

    公开(公告)日：1983-03-15

    申请号：US207969

    申请日：1980-09-22

    申请人： David L. Greenaway ,  Joseph A. Clarinval ,  Alex Nyfeler

    发明人： David L. Greenaway ,  Joseph A. Clarinval ,  Alex Nyfeler

    IPC分类号： G06K1/12 ,  G06K7/14 ,  G06K13/07 ,  G06K19/06 ,  G06K7/10

    CPC分类号： G06K1/126 ,  G06K13/07 ,  G06K7/14 ,  Y10S283/904

    摘要： An apparatus adapted for thermally erasing or changing machine readable optical markings previously entered on a carrier of thermoplastic material which has two major sides, and wherein the optical markings cause a predetermined modification of any light rays impinging on the optical markings by either diffraction or refraction, include a erasing device adapted to be located on one major side of the carrier, for erasing or changing the markings, a reading device, operative during operation of the erasure device, and including at least two light sensors adapted to be located on the other major side of the carrier, so as to check the erasure or change of the markings effected by the erasing device. The light sensors provide output signals of respective opposite polarities following erasure or change of any one of the markings. A moving device generates a relative movement between the carrier and the erasing and reading devices, respectively, and a comparator is postcoupled to the light sensors, and includes a detector for indicating whether the output of the comparator exceeds or is below respective predetermined limits. A control device controls the operation of the erasing device of the moving device and is arranged to inhibit the operation of the erasure device when the output of the comparator exceeds or falls below the limits, respectively, so that the limits establish a uniform criterion for effecting erasure of the markings.

    摘要翻译： PCT No.PCT / CH79 / 00140 Sec。 371日期1980年9月22日 102（e）日期1980年9月22日PCT提交1979年10月29日PCT公布。 公开号WO80 / 01616 日期1980年8月7日。一种适于热擦除或改变先前输入到具有两个主要侧面的热塑性材料的载体上的机器可读光学标记的设备，并且其中光学标记引起对光学入射的任何光线的预定修改 通过衍射或折射的标记包括适于位于载体的一个主侧上的擦除装置，用于擦除或改变标记，读取装置在擦除装置的操作期间操作，并且包括至少两个适于 位于载体的另一个主要侧面，以便检查由擦除装置实现的标记的擦除或改变。 光传感器在擦除或改变任何一个标记之后提供相应极性的输出信号。 移动装置分别在载体和擦除和读取装置之间产生相对移动，并且将比较器后耦合到光传感器，并且包括用于指示比较器的输出是否超过或低于相应预定极限的检测器。 控制装置控制移动装置的擦除装置的操作，并且当比较器的输出超过或低于极限时，禁止擦除装置的操作，使得限制建立均匀的标准来实现 擦除标记。

    Documents coded by means of machine-readable optical markings
    4.
    发明授权
    Documents coded by means of machine-readable optical markings 失效
    通过机读光学标记编码的文件

    公开(公告)号：US4143810A

    公开(公告)日：1979-03-13

    申请号：US742260

    申请日：1976-11-16

    申请人： David L. Greenaway

    发明人： David L. Greenaway

    IPC分类号： G06K19/10 ,  G06K1/12 ,  G06K19/06 ,  G06K19/16 ,  G07F7/02 ,  G07F7/08 ,  G02B5/32 ,  G06K7/10

    CPC分类号： G07F7/086 ,  G06K1/126 ,  G06K19/16 ,  G06Q20/3433 ,  G07F7/02

    摘要： There is described a method of producing a document coded with machine-readable information, said document having an information carrier with a multiplicity of storage positions, wherein selected storage positions are occupied by respective machine-readable optical markings, which markings cause a predetermined modification of incident light; the geometrical position of the markings on the information carrier represents coded information. In the method disclosed, such an optical marking is introduced into each storage position, and subsequently, selected optical markings are cancelled or altered. Also described are documents coded by means of the disclosed method, as well as a device for cancelling or altering the optical markings.

    摘要翻译： 描述了一种生产用机器可读信息编码的文件的方法，所述文档具有多个存储位置的信息载体，其中所选择的存储位置被相应的机器可读光标记占据，该标记引起预定的修改 入射光; 信息载体上的标记的几何位置表示编码信息。 在所公开的方法中，将这种光学标记引入每个存储位置，随后选择的光标记被取消或改变。 还描述了通过所公开的方法编码的文件以及用于取消或改变光学标记的装置。

    Photoelectric apparatus for detecting altered markings
    5.
    发明授权
    Photoelectric apparatus for detecting altered markings 失效
    用于检测改变标记的光电装置

    公开(公告)号：US4250393A

    公开(公告)日：1981-02-10

    申请号：US8427

    申请日：1979-01-31

    申请人： David L. Greenaway

    发明人： David L. Greenaway

    IPC分类号： G06K7/12 ,  G06K7/10 ,  G06K19/16

    CPC分类号： G06K7/10831 ,  G06K19/16 ,  Y10S283/904

    摘要： An optical reading apparatus is described for reading documents which contain information in the form of optical markings which deflect a reading beam coming from a light source in at least one given direction of deflection. A first light sensor detects a deflected partial beam. A second light sensor, the optical axis of which lies in a given direction of deflection, is only receptive to those light rays deflected at the document which lie outside a first cone and inside a second cone which is coaxial with the second light sensor. A comparator compares the electrical signals of both light sensors. Altered markings, which cause additional dispersion of the reading beam, can be reliably distinguished from the unaltered markings.

    摘要翻译： 描述了一种光学读取装置，用于读取包含以至少一个给定的偏转方向偏转来自光源的读取光束的光学标记形式的信息的文档。 第一光传感器检测偏转的局部光束。 其光轴位于给定的偏转方向上的第二光传感器仅接收在位于第一锥体外侧的文档处偏转的那些光线并且与第二光传感器同轴的第二锥体内。 比较器比较两个光传感器的电信号。 导致读取光束的额外分散的改变的标记可以可靠地与未改变的标记区分开。

    Projection screen and method for making same
    6.
    发明授权
    Projection screen and method for making same 失效
    投影屏幕及其制作方法

    公开(公告)号：US4297001A

    公开(公告)日：1981-10-27

    申请号：US95097

    申请日：1979-11-16

    申请人： Gregor Antes ,  David L. Greenaway

    发明人： Gregor Antes ,  David L. Greenaway

    IPC分类号： G03B21/602 ,  G03B21/60

    CPC分类号： G03B21/602 ,  Y10T428/24504

    摘要： A projection screen is disclosed having a surface formed by a plurality of irregularly distributed microstructural elements shaped like the outer surface of contiguous bubbles. Also disclosed is a method for making such projection screens.

    摘要翻译： 公开了具有由多个不规则分布的微结构元件形成的表面的投影屏幕，其形状类似于邻接气泡的外表面。 还公开了一种用于制造这种投影屏幕的方法。