Check digit calculator
    4.
    发明授权
    Check digit calculator 失效
    校验位计算器

    公开(公告)号:US4272674A

    公开(公告)日:1981-06-09

    申请号:US955236

    申请日:1978-10-27

    IPC分类号: G06C1/00 G06C27/00 G01D13/22

    CPC分类号: G06C1/00

    摘要: A calculator for calculating check digits which are obtained from code numbers according to a modulus 10, modulus 11 or similar check. In accordance with one embodiment of the invention, the desired check digit original numerals are indicated in response to the determination of a code number and weights and the desired check digit is readily obtained from the sum of the check digit original numerals. In accordance with another embodiment, the desired check digit is directly indicated in response to the setting of a code number. In accordance with still another improved embodiment, the desired check digit according to the modulus 10 and that according to the modulus 11 are selectively indicated in response to the setting of a code number.

    摘要翻译: 用于计算根据模数10,模数11或类似检查的代码号获得的校验数字的计算器。 根据本发明的一个实施例,响应于代码号和权重的确定来指示期望的校验位原始数字,并且从校验位原始数字的总和容易地获得期望的校验位。 根据另一实施例,响应于代码号的设置直接指示所需的校验位。 根据另一改进的实施例,响应于代码号的设置选择性地指示根据模数10的所需校验位和根据模数11的所需校验位。

    Longitudinal profile measuring apparatus

    公开(公告)号:US06618954B2

    公开(公告)日:2003-09-16

    申请号:US09865529

    申请日:2001-05-29

    IPC分类号: G01B520

    CPC分类号: G01B21/20 G01B21/30

    摘要: A longitudinal profile measuring apparatus including a relative distance meter located on a frame supported by more than two wheels in a row in a direction of a measuring line for measuring relative distance to a target surface, a moving distance meter for measuring moving distance of movement along the measuring line on the target surface, and a data processing unit for finding spatial data, which shows a rough profile of the target surface, along the measuring line from the relative distance measured by the relative distance meter. The data processing unit storing moving distance data associated with relative distance data to the target surface and transforming the relative distance data of the stored data into amplitude corresponding to frequency, multiplying the amplitude corresponding to frequency by a coefficient of correction for allowing the apparatus to have a gain with a desired frequency characteristic for correction, and inverse transforming the corrected amplitude to find the corrected spatial data of the target surface.

    Back-reflection type light diffusing apparatus
    9.
    发明授权
    Back-reflection type light diffusing apparatus 失效
    背反射型光漫射装置

    公开(公告)号:US4673254A

    公开(公告)日:1987-06-16

    申请号:US886892

    申请日:1986-07-18

    摘要: A back-reflection type light diffusing apparatus of this invention is suitable for use in liquid crystal display panels or the like, and is formed by a light guiding plate. The light guiding plate has one surface which forms a first surface through which light is radiated while its opposite surface forms a second surface on which a light reflecting plate is mounted. The light reflecting plate is provided with non-reflecting portions disposed in such a manner that the area thereof increases the closer it gets to the light source so as to radiate light from the light radiating surface uniformly over its entire area.

    摘要翻译: 本发明的背反射型光漫射装置适用于液晶显示面板等,由导光板形成。 导光板具有形成第一表面的一个表面,通过该第一表面照射光,而其相对表面形成安装有光反射板的第二表面。 光反射板设置有非反射部分,其布置方式使得其面积增加得越接近光源,从而将光从光辐射表面均匀地辐射到其整个区域上。