利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

48 条记录 (耗时 0.012 秒)

    Visual indicator pulse supply apparatus
    11.
    发明授权
    Visual indicator pulse supply apparatus 失效
    可视指示器脉冲电源设备

    公开(公告)号：US3569936A

    公开(公告)日：1971-03-09

    申请号：US3569936D

    申请日：1968-11-08

    申请人： ULTRONIC SYSTEMS CORP

    发明人： JOHNSON RONALD W

    IPC分类号： G09F9/30 ,  H03K17/18 ,  H04L12/18 ,  H04Q1/32 ,  H04Q5/00

    CPC分类号： G09F9/30 ,  H03K17/18 ,  H04L12/1804

    摘要： A visual display device is provided with a plurality of individual display elements such as lamps which are individually controlled to be either lit or dark in order to collectively present a changing pattern of dark and lit lamps which defines the display. To this end, each element is supplied with a separate control signal which has first and second mutually exclusive values, one of which represents the ''''element-off'''' state, the other representing the ''''element-on'''' state. All elements are connected in parallel to the output of a power supply. The supply produces an energizing voltage which takes the form of a pulse train of equidistantly spaced unidirectional pulses of like amplitude and duration. As a result, this voltage, in periods between pulses, has a first value which is insufficient to light the elements and, during the periods in which the pulses are present, has a second and higher value at which the elements can be lit. However, during the periods in which pulses are present, only those lamps which receive control signals in the ''''element-on'''' state are lit and all other lamps are dark.

    Synchronous digital multiplex communication system including switchover
    14.
    发明授权
    Synchronous digital multiplex communication system including switchover 失效
    同步数字多路通讯系统，包括开关

    公开(公告)号：US3569632A

    公开(公告)日：1971-03-09

    申请号：US3569632D

    申请日：1970-01-16

    申请人： ULTRONIC SYSTEMS CORP

    发明人： BERSIN PETER W ,  SIERACKI FRANK W

    IPC分类号： H04B1/74 ,  H04J3/08

    CPC分类号： H04B1/745

    摘要： Multiplex messages are transmitted from a master station through a plurality of intermediate stations and back to the master via a main channel. A standby channel provides for transmission in the opposite direction. If a station detects received message failure in the main channel it initiates a switchover operation in which the preceding station switches received messages to the standby channel. The switched messages pass back through the master to the initiating station, and the initiating station returns them to the master via the main channel. Modem clock signals are switched to maintain synchronous operation and failure of a modem results in a switchover operation. Provision is made for operation alternatively at higher and lower bit transmission rates, while retaining the same message length. Special connections for predetermined message cells allow communication between intermediate stations.

    Information verification system and digital data input unit
    15.
    发明授权
    Information verification system and digital data input unit 失效
    信息验证系统和数字数据输入单元

    公开(公告)号：US3569624A

    公开(公告)日：1971-03-09

    申请号：US3569624D

    申请日：1968-03-25

    申请人： ULTRONIC SYSTEMS CORP

    发明人： TWYFORD ROBERT H

    IPC分类号： G07F7/08 ,  H04L13/08

    CPC分类号： G07F7/08 ,  G06Q20/4037

    摘要： An inquiry unit for use with an information checking system adapted to receive by manual insertion a multidigit number, to visually display the number and to mechanically store the number. A manually operated sending key releases the stored number for processing and clears the unit to return same to normal standby to receive the next multidigit number.