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82 条记录 (耗时 0.014 秒)

    Method of and circuit arrangement for automatic signal-level control
    1.
    发明授权
    Method of and circuit arrangement for automatic signal-level control 失效
    自动信号电平控制的方法和电路布置

    公开(公告)号：US4370725A

    公开(公告)日：1983-01-25

    申请号：US188036

    申请日：1980-09-17

    申请人： Paolo Di Tria

    发明人： Paolo Di Tria

    IPC分类号： H03G3/20 ,  H04L15/24

    CPC分类号： H03G3/20

    摘要： A binary input signal S multiplied by a level-controlling modifier X.sub.n-1 is periodically sampled to determine its amplitude whose value is then differentially combined with a fixed reference value R to produce an error signal. The latter is multiplied by the same modifier X.sub.n-1 and by a fractional coefficient k to yield a corrective value which is then algebraically combined with modifier X.sub.n-1 to produce an updated modifier X.sub.n for the next sampling cycle. To avoid instability, the modified input signal may be subjected to a limitation of its dynamic range before or after sampling. A load to be driven by the input signals may receive the modified signal itself or the modifier used to control its level.

    摘要翻译： 乘以电平控制修改器Xn-1的二进制输入信号S被周期性地采样，以确定其幅度然后与固定的参考值R差分地组合以产生误差信号。 后者乘以相同的修正符Xn-1和分数系数k以产生校正值，然后与修正符Xn-1代数组合以产生用于下一个采样周期的更新的修改符Xn。 为了避免不稳定性，修改的输入信号可能在采样之前或之后受到其动态范围的限制。 由输入信号驱动的负载可以接收修改的信号本身或用于控制其电平的修正器。

    Automatic teletypewriter
    2.
    发明授权
    Automatic teletypewriter 失效
    自动电传打字机

    公开(公告)号：US4252994A

    公开(公告)日：1981-02-24

    申请号：US4892

    申请日：1979-01-19

    申请人： Charles J. Holloman

    发明人： Charles J. Holloman

    IPC分类号： H04L12/02 ,  H04L13/08 ,  H04L17/00 ,  H04L15/24 ,  H04M1/30

    CPC分类号： H04L12/02 ,  H04L13/08 ,  H04L17/00

    摘要： An automatic teletypewriter is provided. The teletypewriter includes a keyboard having alpha and numeric characters and includes means to utilize the numeric character keys for dialing into the telex network. The teletypewriter also automatically keeps count of the characters generated on each line and generates a carriage return-line feed signal at the end of each line if not directed to do so.

    摘要翻译： 提供自动电传打字机。 电传打字机包括具有字母和数字字符的键盘，并且包括利用数字字符键拨入电传网络的装置。 电传打字机还自动保留每条线上生成的字符数，并在每行末尾生成回车线送料信号，如果不是这样做的话。

    Bialphabetic teleprinter for texts in latin and arabic characters
    3.
    发明授权
    Bialphabetic teleprinter for texts in latin and arabic characters 失效
    拉丁语和阿拉伯语字母的双语打印机

    公开(公告)号：US4137425A

    公开(公告)日：1979-01-30

    申请号：US843280

    申请日：1977-10-18

    申请人： Luigino Ferroglio ,  Umberto Ratti

    发明人： Luigino Ferroglio ,  Umberto Ratti

    IPC分类号： B41J3/01 ,  B41J5/00 ,  G06K15/02 ,  H04L15/24

    CPC分类号： B41J3/01

    摘要： The teleprinter is provided with a bialphabetic keyboard, for example latin and arabic, and a dot printing head controlled by two different character generating units corresponding to the two alphabets. The teleprinter is normally predisposed for one of the two alphabets and can be switched to the other alphabet by means of a sequence of characters. The arabic character generating unit is adapted to recognize predetermined sequences for generating composite characters, i.e. the lam-alef group. Furthermore, some characters at the end of a word are generated by adding a tail to the normal character in response to the spacing code. The teleprinter can be connected to the conventional existing teleprinters, since neither the composite characters, nor the tails are transmitted on the line.

    摘要翻译： 电传打印机配有一个双字键盘，例如拉丁语和阿拉伯语，以及由两个不同字符发生单元对应的两个字母组成的点打印头。 电传打印机通常预设为两个字母中的一个，并且可以通过一系列字符切换到其他字母表。 阿拉伯字符生成单元适于识别用于生成复合字符的预定序列，即lam-alef组。 此外，通过向响应于间隔代码的普通字符添加尾部来生成单词结尾处的一些字符。 电传打印机可以连接到常规现有的电传打印机，因为复合字符和尾部都不会在线上传输。

    Data communication system
    4.
    发明授权
    Data communication system 失效
    数据通信系统

    公开(公告)号：US3824341A

    公开(公告)日：1974-07-16

    申请号：US25377372

    申请日：1972-05-16

    申请人： XEROX CORP

    发明人： JACOBSON C

    IPC分类号： H04N1/327 ,  H04N1/333 ,  H04L15/24 ,  H04L17/16

    CPC分类号： H04N1/33361 ,  H04N1/327 ,  H04N1/33323 ,  H04N2201/3335

    摘要： A circuit for sensing reception of carrier in an information transmission system which employs valid detection of a carrier including filtering, comparison, and time delay, to determine propriety of a carrier, by a logic arrangement for digital interrogation including a pair of counters under the control of a third counter. Each of the pair of counters is advanced by signals derived from the detection circuitry over a predetermined time frame set by the third counter, and the counter outputs decoded to a deactivation device in the event of improper carrier detection. In addition, a resettable counter monitors the transmission during information flow. Failure to reset, indicating improper carrier, also triggers deactivation.

    摘要翻译： 一种用于感测在信息传输系统中接收载波的电路，其采用包括滤波，比较和时间延迟的载波的有效检测来确定载波的适用性，通过用于数字询问的逻辑装置，包括在控制下的一对计数器 的第三个柜台。 一对计数器中的每一个由在由第三计数器设置的预定时间帧上从检测电路得到的信号提前，并且在不正确的载波检测的情况下，计数器输出解码到去激活装置。 另外，可复位计数器在信息流中监视传输。 未能重置，表示不正确的运营商也会触发停用。

    Type carrier assembly
    5.
    发明授权
    Type carrier assembly 失效
    类型承运人组装

    公开(公告)号：US3696204A

    公开(公告)日：1972-10-03

    申请号：US3696204D

    申请日：1970-05-28

    申请人： TELETYPE CORP

    发明人： WALLSKOG ALAN G

    IPC分类号： B41J7/60 ,  B41J7/64 ,  B41J19/30 ,  H04L17/30 ,  H04L15/24 ,  H04L15/34 ,  H04L17/16

    CPC分类号： H04L17/30 ,  B41J7/60 ,  B41J7/64 ,  B41J19/305

    摘要： Drivable type dies of a teleprinter are supported in intersecting rows and columns from a type carrier which is arranged for adjustment in intersecting paths at successive stations to which the carrier is moved for presenting any selected die in a position for character reproduction. Adjustment and movement of the carrier and translocation of an impeller to successive printing stations for driving successively selected dies between print and non-print modes results from magnetomotive phenomena generated by a linear electric motor.

    摘要翻译： 电传打印机的可驱动型模具被支撑在来自类型载体的交叉行和列中，该类型载体被布置用于在连续站处的相交路径中进行调整，载体移动到相邻路径，以将任何所选择的模具呈现在用于字符再现的位置。 载体的调节和运动以及叶轮易位到连续的印刷站，用于在印刷和非印刷模式之间连续选择的模具，这是由线性电动机产生的磁通现象引起的。

    Electronic signal converter
    6.
    发明授权
    Electronic signal converter 失效
    电子信号转换器

    公开(公告)号：US3569623A

    公开(公告)日：1971-03-09

    申请号：US3569623D

    申请日：1968-11-25

    申请人： ULTRONIC SYSTEMS CORP

    发明人： SCHNITZIUS JOHN P

    IPC分类号： H04L15/24

    CPC分类号： H04L25/0268

    摘要： Apparatus for transforming standard polar or bipolar teletypelike signals as received from a telephone line into corresponding signals at different power levels for use with electronic equipment. In the apparatus, the received signals actuate and deactuate a tunnel diode oscillator. Oscillations thus produced are amplified, detected, integrated and thereafter processed to produce corresponding output signals at the desired power level.

    Teleprinter device utilizing receiver formed from electronic circuits
    7.
    发明授权
    Teleprinter device utilizing receiver formed from electronic circuits 失效
    使用从电子电路形成的接收器的电视设备

    公开(公告)号：US3558821A

    公开(公告)日：1971-01-26

    申请号：US3558821D

    申请日：1969-01-27

    申请人： SIEMENS AG

    发明人： LUTZ ROMAN ,  VOGL HERBERT

    IPC分类号： H04L25/40 ,  H04L25/45 ,  H04L13/08 ,  H04L15/24

    CPC分类号： H04L25/45

    摘要： A teleprinter device utilizing a receiver formed from electronic circuits and constructed as a shift register, for use with an electromechanical printing mechanism, and employing a frequency generator which is adjustable to provide various operating speeds, the shift register having shift, start and reset circuits which are cooperable with a blocking circuit connected to said shift register to prevent further change, following entry of the last symbol step, in the shift register until release thereof in response to a control impulse, whereby the data is stored in the register, from the middle of the last symbol step, for a period of 1.25 step lengths.