Tab layout display for a typewriter
    3.
    发明授权
    Tab layout display for a typewriter 失效
    打字机的标签布局显示

    公开(公告)号:US4169685A

    公开(公告)日:1979-10-02

    申请号:US863206

    申请日:1977-12-22

    申请人: William C. Gruber

    发明人: William C. Gruber

    CPC分类号: G06F17/247 B41J21/00

    摘要: A panel of selectively-controllable indicator elements is associated with a viewable escapement scale on a typewriter and provides an indication of a set of operative tab stops stored in an electronic memory. Escapement position codes extracted from an electronic tab storage drive a logic circuit that is so connected as to modify the state of individual panel elements at corresponding escapement scale positions to indicate a tab layout. By providing, in a preferred implementation, means for accessing the presently operative (selected) set of tab codes from a memory adapted to retain plural tab sets, the operator is enabled to assess the layout of each selection visually. In such an implementation for a typewriter having two different selectable pitches, say pitches of 10 and 12 characters per inch, the panel elements are arranged to display the selected tab layout respective of pitch.

    摘要翻译: 可选择性地控制的指示元件的面板与打字机上的可视擒尺秤相关联,并且提供存储在电子存储器中的一组操作标签挡块的指示。 从电子标签存储器提取的擒纵位置代码驱动一个逻辑电路,该逻辑电路被连接成修改相应的擒纵机构尺寸位置处的各个面板元件的状态,以指示标签布局。 通过在优选的实施方式中提供用于从适于保持多个标签集的存储器访问当前可操作(选择的)一组标签代码的装置,操作者能够视觉地评估每个选择的布局。 在具有两个不同可选择的间距的打字机的这种实现中,例如每英寸10和12个字符的间距,面板元件被布置成显示相应于间距的所选择的片段布局。