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5 条记录 (耗时 0.014 秒)

    Compact antenna system
    2.
    发明授权
    Compact antenna system 失效
    紧凑型天线系统

    公开(公告)号：US4369518A

    公开(公告)日：1983-01-18

    申请号：US211314

    申请日：1980-11-28

    申请人： John M. Olson

    发明人： John M. Olson

    IPC分类号： H01Q1/24 ,  H03F3/60 ,  H04H1/00 ,  H04B1/18

    CPC分类号： H01Q1/247 ,  H03F3/60

    摘要： A compact antenna system for use in connection with pay television reception comprises a resonant cavity including a small dipole, the latter being connected to a circuit board containing circuitry for converting the received pay television signal to a frequency usable by the television receiver of the subscriber. The member defining the cavity is affixed to the circuit board, which in turn is mounted upon a holder attached to the exterior of the structure in which the television receiver is located. The circuit board includes a preamplifier-filter stage to filter extraneous signals and to promote preamplification of the signal from the antenna. The preamplified signal goes to the input of a mixer and from there is filtered to the frequency of the channel selected by the user of the television receiver. At least one triangular circuit element is utilized in the preamplifier and in the mixer.

    摘要翻译： 用于付费电视接收的小型天线系统包括谐振腔，其包括小偶极子，该谐振腔被连接到电路板，该电路板包含用于将所接收的付费电视信号转换成可由用户的电视接收机使用的频率的电路。 限定空腔的构件固定到电路板，电路板又安装在附接到电视接收机所在结构外部的保持架上。 电路板包括前置放大器滤波器级，以过滤外部信号并促进来自天线的信号的前置放大。 前置放大信号进入混频器的输入端，并从滤波器输出到由电视接收机的用户选择的频道的频率。 在前置放大器和混合器中使用至少一个三角形电路元件。

    Computer data interface for handheld computer transfer to second computer including cable connector circuitry for voltage modification
    3.
    发明授权
    Computer data interface for handheld computer transfer to second computer including cable connector circuitry for voltage modification 失效
    用于手持式计算机的计算机数据接口传输到第二台计算机，包括用于电压修改的电缆连接器电路

    公开(公告)号：US5157769A

    公开(公告)日：1992-10-20

    申请号：US860293

    申请日：1992-03-26

    申请人： Mark Eppley ,  Lawrence H. Berg ,  John M. Olson

    发明人： Mark Eppley ,  Lawrence H. Berg ,  John M. Olson

    IPC分类号： G06F1/26 ,  G06F13/40

    CPC分类号： G06F1/26 ,  G06F13/4068

    摘要： Disclosed is a computer data interface (6) for connecting a handheld computer (4) and a desktop computer (2). The computer data interface includes a cable (8) having connectors (10 and 12) at each end thereof. Mounted in one of the connectors is an adapter circuit for receiving data signals from the handheld computer and transmitting the signals to the desktop computer at a voltage levels compatible with the desktop computer. Similarly, the adapter circuit receives signals from the desktop computer and transmits the signals to the handheld computer at voltage levels compatible with the handheld computer. The adapter circuit is powered by the desktop computer to prevent draining the batteries of the handheld computer.

    摘要翻译： 公开了一种用于连接手持式计算机（4）和台式计算机（2）的计算机数据接口（6）。 计算机数据接口包括在其每个端部处具有连接器（10和12）的电缆（8）。 安装在其中一个连接器中的是用于从手持式计算机接收数据信号的适配器电路，并以与台式计算机兼容的电压电平将信号发送到台式计算机。 类似地，适配器电路从台式计算机接收信号，并以与手持式计算机兼容的电压电平将信号发送到手持式计算机。 适配器电路由台式计算机供电，以防止手持式计算机的电池耗尽。

    Ink jet inks and method of making
    5.
    发明授权
    Ink jet inks and method of making 失效
    喷墨油墨及其制作方法

    公开(公告)号：US4383859A

    公开(公告)日：1983-05-17

    申请号：US264760

    申请日：1981-05-18

    申请人： Michael T. Moore ,  John M. Olson ,  Donald A. Stremel

    发明人： Michael T. Moore ,  John M. Olson ,  Donald A. Stremel

    IPC分类号： C09D11/00 ,  C09D11/02

    CPC分类号： C09D11/30 ,  Y10S260/38

    摘要： An ink jet printing ink is first formulated in concentrated form, and in this form it is subjected to stressful operating conditions such as an elevated temperature. This stress causes particle formation. After filtration to remove these particles, the final ink formulation is prepared, including for the first time ingredients which inhibit particle formation.

    摘要翻译： 喷墨印刷油墨首先以浓缩形式配制，并且以这种形式经受压力操作条件如升高的温度。 这种压力导致颗粒形成。 过滤除去这些颗粒后，制备最终的油墨配方，首次包括抑制颗粒形成的成分。