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    Case shifting code generator
    1.
    发明授权
    Case shifting code generator 失效
    案例移位代码发生器

    公开(公告)号：US3742137A

    公开(公告)日：1973-06-26

    申请号：US3742137D

    申请日：1970-07-29

    申请人： TELETYPE CORP

    发明人： GARLAND S

    IPC分类号： H04L17/30 ,  H04L15/12

    CPC分类号： H04L17/30

    摘要： A system for case shifting the binary coded representations of the alphanumeric and figure characters of the American Standard Code for Information Interchange (ASCII) comprising three gates on each of the fifth and sixth code levels with one of the three gates of each such level energized to pass the normal code generated by an ASCII code generator in the absence of a shift command. The other two AND-gates of each of the fifth and sixth levels are energized upon the occurrence of a normal shift command. One of these other two AND-gates in each level passes a normal fifth or sixth level code signal, and the other of these two AND-gates passes an inverted fifth or sixth level signal. In the presence of a shift command in combination with a ''''1'''' state signal in the seventh level, the inverted sixth-level AND-gate and the normal fifth-level AND-gate are energized. However, a ''''0'''' state signal in the seventh level causes the normal sixthlevel AND-gate and the inverted fifth-level AND-gate to be energized. An additional AND-gate monitors the sixth and seventh levels and an auxiliary shift contact. Upon concurrence of ''''1'''' state signals in both the sixth and seventh levels and the closure of the auxiliary shift contact, the additional AND-gate delivers a shift signal to the normal shift apparatus of the circuit in order to case shift only the alphabetic characters.

    摘要翻译： 用于移位美国信息交换标准代码（ASCII）的美国标准码的字母数字和图形字符的二进制编码表示的系统，包括在每个这样的级别的三个门中的一个激活到第五和第六代码级的三个门 在没有shift命令的情况下传递由ASCII代码生成器生成的普通代码。 第五级和第六级中的每一级的另外两个与门在正常移位命令的发生时被通电。 每个级别中这些其他两个与门中的一个通过正常的第五或第六电平代码信号，并且这两个与门中的另一个通过反相的第五或第六电平信号。 在存在与第七电平中的“1”状态信号相结合的移位指令的情况下，反相第六级与门和正常第五级与门通电。 然而，第七电平中的“0”状态信号使正常的第六电平与门和反相的第五级与门通电。 一个额外的与门监视第六级和第七级以及辅助换档触点。 在第六级和第七级同时出现“1”状态信号并关闭辅助换档触点时，附加的“与”门将移位信号传送到电路的正常移位装置，以便只移除字母字符 。

    Key-controlled inductive input arrangement
    2.
    发明授权
    Key-controlled inductive input arrangement 失效
    键控感应输入装置

    公开(公告)号：US3573369A

    公开(公告)日：1971-04-06

    申请号：US3573369D

    申请日：1968-03-18

    申请人： KIENZLE APPARATE GMBH

    发明人： KONIG GERHARD ,  SCHMIDT HELMUT ,  SINGER KLAUS

    IPC分类号： H03K17/972 ,  H04L15/12

    CPC分类号： H03K17/972 ,  H03K2017/9706

    摘要： A primary circuit of a printed circuit plate is inductively coupled with a secondary circuit of a printed circuit plate when a key-controlled core pin connects a coupling loop of the primary circuit with a coupling loop of the secondary circuit. The coupling loops of the secondary circuit are arranged in accordance with a binary code so that pulses at the output terminals of the secondary circuit represent in coded form the information introduced into the primary circuit by operation of selected keys associated with alphanumerical information.

    Keyboard
    6.
    发明授权
    Keyboard 失效
    键盘

    公开(公告)号：US3684827A

    公开(公告)日：1972-08-15

    申请号：US3684827D

    申请日：1970-06-23

    申请人： IBM

    发明人： PARRY WALTER E

    IPC分类号： H04L15/12

    CPC分类号： B41J5/08

    摘要： A printed circuit keyboard in which a printed circuit card carries character encoding. Interposers are constructed with projecting fingers made of conductive polyvinyl chloride (PVC) material. Actuation of a key initiates a mechanical operation which moves the fingers against copper areas of a circuit card. The contact between the interposer fingers and the circuit card completes a current to a semiconductor sensing circuit. The motion of the interposer fingers against the circuit card plus the finger configuration, causes a wiping action which cleans the contact surface. Since the fingers are made of semi-hard PVC material, wear is kept to a minimum while at the same time a positive contact is maintained by the spring pressure of the material against the circuit card. Shifting between upper and lower case is accomplished by physically shifting the circuit card so that a new and differently encoded path is completed by the interposer.

    摘要翻译： 一种印刷电路键盘，其中印刷电路卡携带字符编码。 内插件由导电聚氯乙烯（PVC）材料制成的突出指状物构成。 键的启动启动将手指移动到电路卡的铜区域的机械操作。 插入器指状物和电路卡之间的接触完成了到半导体感测电路的电流。 插入器手指抵靠电路卡加手指构型的运动引起擦拭接触表面的擦拭动作。 由于手指由半硬PVC材料制成，磨损保持最小，同时通过材料的弹簧压力抵抗电路卡保持正接触。 通过物理上移动电路卡，通过插入器完成新的和不同编码的路径来实现大小写之间的移动。