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113 条记录 (耗时 0.03 秒)

    Methods and apparatus for tuning in an inductive system
    6.
    发明申请
    Methods and apparatus for tuning in an inductive system 有权
    用于在感应系统中调谐的方法和装置

    公开(公告)号：US20050130601A1

    公开(公告)日：2005-06-16

    申请号：US10978515

    申请日：2004-11-01

    申请人： Vincent Palermo ,  Domenic Terranova

    发明人： Vincent Palermo ,  Domenic Terranova

    IPC分类号： H03J1/00 ,  H03J5/02 ,  H04B5/02 ,  H04B5/06 ,  H04M1/60 ,  H04M1/727 ,  H04M1/737 ,  H04B1/38 ,  G05B11/28 ,  H04B1/40

    CPC分类号： H03J5/0245 ,  G06K7/0008 ,  H03J1/0008 ,  H04B5/0012 ,  H04B5/02 ,  H04B5/06 ,  H04M1/6066 ,  H04R2420/07

    摘要： Electronic circuitry supports utilization of a series of pulses of varying width to tune a transducer (e.g., a coil that produces or receives a magnetic field) for transmitting or receiving. For example, a control voltage generator generates a sequence of digital pulses of varying pulse widths to produce respective control voltages. The control voltage generator applies a produced control voltage to a varactor element whose capacitance changes depending on a magnitude of the produced control voltage. The varactor element forms part of a tank circuit. Consequently, the series of pulse widths controls an operating frequency of the tank circuit at different times. The tank circuit includes an inductive coil that is tuned to produce or receive a magnetic or inductive field.

    摘要翻译： 电子电路支持利用不同宽度的一系列脉冲来调谐传感器（例如，产生或接收磁场的线圈），用于发射或接收。 例如，控制电压发生器产生脉冲宽度变化的数字脉冲序列，以产生相应的控制电压。 控制电压发生器将产生的控制电压施加到变容二极管元件，该变容二极管元件的电容根据所产生的控制电压的大小而变化。 变容二极管元件构成了电路的一部分。 因此，一系列脉冲宽度控制在不同时间的电路的工作频率。 音箱电路包括被调谐以产生或接收磁场或感应场的感应线圈。

    Scanning receiver
    7.
    发明授权
    Scanning receiver 失效
    扫描接收机

    公开(公告)号：US5408692A

    公开(公告)日：1995-04-18

    申请号：US116506

    申请日：1993-09-03

    申请人： Yoshinori Suzuki ,  Hironori Warabi

    发明人： Yoshinori Suzuki ,  Hironori Warabi

    IPC分类号： H03J1/00 ,  H03J5/02 ,  H04B1/16

    CPC分类号： H03J5/0245 ,  H03J1/0091

    摘要： A scanning receiver is formed of a memory for storing reception frequencies corresponding to a plurality of reception channels; a receiving section for receiving radio waves to be tuned to the reception frequencies; a control device for controlling the memory and the receiving section so as to read out the reception frequencies corresponding to the reception channels successively in a predetermined order from the memory in predetermined order to thereby cause the receiving section to operate. The memory including a fixed storage portion in which parts of the reception frequencies are fixedly written and an additional storage portion in which parts of the reception frequencies are rewritably written, the additional storage portion including a select/non-select setting area in which select/non-select information is written, the select/non-select information indicating that when the reception frequencies corresponding to the reception channels are read out from the fixed and additional storage portions, the reading out of each of the reception frequencies is necessary or not.

    摘要翻译： 扫描接收机由用于存储对应于多个接收信道的接收频率的存储器形成; 接收部分，用于接收要调谐到接收频率的无线电波; 用于控制存储器和接收部分的控制装置，以预定的顺序从存储器中以预定的顺序依次读出对应于接收通道的接收频率，从而使接收部分工作。 存储器包括固定存储部分，其中部分接收频率被固定地写入，以及附加存储部分，其中接收频率的一部分被可重写地写入，附加存储部分包括选择/非选择设置区域，其中选择/ 写入非选择信息时，选择/非选择信息指示当从固定和附加存储部分读出与接收信道相对应的接收频率时，需要或不需要读出每个接收频率。

    Circuit arrangement for the control of a digitally settable load
    8.
    发明授权
    Circuit arrangement for the control of a digitally settable load 失效
    用于控制数字可设置负载的电路布置

    公开(公告)号：US4220849A

    公开(公告)日：1980-09-02

    申请号：US909270

    申请日：1978-05-24

    申请人： Peter Harzer

    发明人： Peter Harzer

    IPC分类号： H03J5/02 ,  G06M3/14

    CPC分类号： H03J5/0245

    摘要： A manually operated direct-current generator, with an output voltage whose polarity and magnitude depend on the direction and speed of rotation of a control knob, charges a storage capacitor in an input circuit of an operational amplifier which works into two comparators respectively responsive to positive and negative voltages exceeding selected thresholds. A triggerable pulse source, upon actuation by either comparator, feeds back one or more discharge pulses to the storage capacitor and also steps a reversible pulse counter in either a forward or a reverse sense.

    摘要翻译： 具有输出电压的手动操作的直流发电机，其极性和幅度取决于控制旋钮的旋转方向和速度，对运算放大器的输入电路中的存储电容器进行充电，该运算放大器分别响应于正的 负电压超过选定的阈值。 一个可触发的脉冲源，在由任一比较器驱动时，将一个或多个放电脉冲反馈到存储电容器，并且还可以以正向或反向的方式对可逆脉冲计数器进行步进。

    Channel change indication circuit with delayed memory activation
    9.
    发明授权
    Channel change indication circuit with delayed memory activation 失效
    频道更改指示电路，延迟记忆激活

    公开(公告)号：US4165489A

    公开(公告)日：1979-08-21

    申请号：US921290

    申请日：1978-07-03

    申请人： Thomas J. Zato

    发明人： Thomas J. Zato

    IPC分类号： H03J5/02 ,  H04B1/26

    CPC分类号： H03J5/0245

    摘要： A limited-channel television tuning system includes a MNOS memory for storing tuning voltage information. Memory locations are addressed by channel address means through an encoder-decoder arrangement. The encoder supplies a clock-controlled channel address register for transferring the encoded address information to a comparator, which is also supplied directly with the encoded address information. The comparator outputs drive a delay circuit, consisting of a clocked flip flop AND gate arrangement, through a NOR gate. The output of the AND gate supplies a one-shot multivibrator for energizing the memory.

    摘要翻译： 有限频道的电视调谐系统包括用于存储调谐电压信息的MNOS存储器。 存储器位置通过编码器 - 解码器布置由通道地址装置来寻址。 编码器提供时钟控制的通道地址寄存器，用于将编码的地址信息传送到比较器，比较器也直接提供编码的地址信息。 比较器输出通过NOR门驱动由时钟触发器AND门装置组成的延迟电路。 与门的输出提供单稳态多谐振荡器，为存储器供电。

    Electronic system for automatically tuning to a selected television channel
    10.
    发明授权
    Electronic system for automatically tuning to a selected television channel 失效
    用于自动调谐到所选电视频道的电子系统

    公开(公告)号：US4020419A

    公开(公告)日：1977-04-26

    申请号：US476503

    申请日：1974-06-05

    申请人： Fred W. Caspari ,  Wayne C. Johnson

    发明人： Fred W. Caspari ,  Wayne C. Johnson

    IPC分类号： H03J7/18 ,  H03J5/02 ,  H03J7/02 ,  H03J7/06 ,  H03J7/28 ,  H03L7/06 ,  H03L7/181 ,  H04B1/26 ,  H04N5/44 ,  H03B3/08

    CPC分类号： H03J7/06 ,  H03J5/0245

    摘要： An all electronic tuning system is described for establishing a frequency of a local oscillator in a television receiver. When a channel selection is made, a number representing the desired channel is entered in a memory circuit. A first plurality of frequencies is generated in response to a channel selection, and a VCO employed as a local oscillator is caused to increase in frequency. When the VCO frequency differs from the first plurality of frequencies by a predetermined amount, a second plurality of frequencies is generated. Each frequency generated in said second plurality of frequencies is compared with said VCO frequency. When a predetermined difference exists between said VCO frequency and said second plurality of frequencies, a count is recorded. When the recorded count is equivalent to the number obtained in the memory circuit, the VCO tuning is inhibited and the VCO frequency is stabilized until a subsequent channel selection is made.

    摘要翻译： 描述了用于在电视接收机中建立本地振荡器的频率的全电子调谐系统。 当进行频道选择时，表示期望频道的号码被输入到存储器电路中。 响应于信道选择产生第一多个频率，并且使用作为本地振荡器的VCO频率增加。 当VCO频率与第一多个频率不同预定量时，产生第二多个频率。 将在所述第二多个频率中产生的每个频率与所述VCO频率进行比较。 当在所述VCO频率和所述第二多个频率之间存在预定的差异时，记录计数。 当记录的计数等于在存储器电路中获得的数量时，VCO调谐被禁止，并且VCO频率稳定，直到进行随后的频道选择。