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    High dynamic range detector for indicating the quieting level of an FM receiver
    1.
    发明授权
    High dynamic range detector for indicating the quieting level of an FM receiver 失效
    高动态范围检测器，用于指示FM接收机的静音电平

    公开(公告)号：US4156848A

    公开(公告)日：1979-05-29

    申请号：US792962

    申请日：1977-05-02

    Applicant: James R. Stimple ,  Timothy P. Craig

    Inventor： James R. Stimple ,  Timothy P. Craig

    IPC: H03G3/20 ,  H04B1/16 ,  H04B17/00

    CPC classification number: H03G3/20

    Abstract: The pre-limited IF signal from an FM receiver is coupled to a pair of linear amplifiers in a cascade configuration. The outputs from the amplifiers are detected and passed to piecewise linear amplifiers. Each piecewise linear amplifier is designed to exhibit a gain characteristic which is dependent on the level of signals applied at its input. A summing circuit sums the piecewise linear amplified signals in predetermined proportion to thereby produce a DC signal which is linearly related to the receiver's quieting level.

    Abstract translation: FM接收机的预限制IF信号以级联配置耦合到一对线性放大器。 来自放大器的输出被检测并传递到分段线性放大器。 每个分段线性放大器被设计为表现出取决于在其输入端施加的信号电平的增益特性。 加法电路以分段线性放大信号按预定比例相加，从而产生与接收机静音电平线性相关的DC信号。

    Sectored antenna receiving system
    2.
    发明授权
    Sectored antenna receiving system 失效
    天线接收系统

    公开(公告)号：US4317229A

    公开(公告)日：1982-02-23

    申请号：US124484

    申请日：1980-02-25

    Applicant: Timothy P. Craig ,  James R. Stimple ,  Paul M. Erickson

    Inventor： Timothy P. Craig ,  James R. Stimple ,  Paul M. Erickson

    IPC: H04B7/08 ,  H04W16/24

    CPC classification number: H04B7/0808 ,  H04W16/24

    Abstract: A plurality of horizontally directive antenna sectors are arranged in a configuration to receive signals from remote transmitters over a given angle in the horizontal plane. A scanning system is operative in one of several modes to sequentially couple each sector to a receiver. In its first mode, each sector is sequentially scanned with the peak signal level therefrom being compared to a reference level. If the signal level on any sector exceeds the reference level the scanner activates to its second mode wherein scanning of all sectors continues for a predetermined interval after which the system advances to a selective scanning mode wherein scan is limited to that sector with the largest stored signal level relative to the reference level, and to those sectors adjacent said sector for a predetermined time interval. At the end of this interval, scanning is inhibited and the receiver is coupled to that sector which exhibited the strongest relative signal level during the scanning sequences. In this listen mode, if the signal level from the sector falls to a minimum level or a coded squelch is undetected for a given period, the system reverts to the first scanning mode.The system periodically updates the reference levels to account for changes in background noise or the presence of an interfering signal.

    Abstract translation: 多个水平方向天线扇区被布置成在水平面中以给定的角度接收来自远程发射机的信号。 扫描系统以几种模式中的一种工作，以将每个扇区顺序耦合到接收器。 在其第一模式中，每个扇区被依次扫描，其峰值信号电平与参考电平进行比较。 如果任何扇区上的信号电平超过参考电平，则扫描器激活到其第二模式，其中所有扇区的扫描继续进行预定的间隔，之后系统前进到选择扫描模式，其中扫描限于具有最大存储信号的扇区 相对于参考电平的电平，以及与所述扇区相邻的扇区达预定的时间间隔。 在该间隔结束时，扫描被禁止，并且接收器耦合到在扫描序列期间显示出最强的相对信号电平的扇区。 在该监听模式中，如果来自扇区的信号电平下降到最小电平或在给定周期内未检测到编码静噪，则系统恢复到第一扫描模式。 系统周期性地更新参考电平以考虑背景噪声的变化或干扰信号的存在。

    Audio Processing Utilizing a Dedicated CPU Core and a Real Time OS
    7.
    发明申请
    Audio Processing Utilizing a Dedicated CPU Core and a Real Time OS 审中-公开
    使用专用CPU核心和实时操作系统的音频处理

    公开(公告)号：US20110106282A1

    公开(公告)日：2011-05-05

    申请号：US12841229

    申请日：2010-07-22

    Applicant: Mark R. Craig ,  Michael W. Craig ,  Timothy P. Craig ,  Daniel C. Maggart ,  Garon Rucker ,  Doug Anderson

    Inventor： Mark R. Craig ,  Michael W. Craig ,  Timothy P. Craig ,  Daniel C. Maggart ,  Garon Rucker ,  Doug Anderson

    IPC: G06F9/46 ,  G06F17/00

    CPC classification number: G06F9/545

    Abstract: This invention claims a novel software application that facilitates streaming and mixing audio and/or video with nearly zero latency, using a computer having Windows or Linux operating systems.Typical computer operating systems are not structured sufficiently to transmit or receive audio and/or video data in a real time. Alternatively, Application Specific Integrated Circuits (ASICs) and Field Programmable Arrays (FPGAs} are used to transmit and receive audio and/or video data via the network. This requires extra hardware, space and cost.The attributes of this invention are significant contributions to successful products in modern markets.

    Abstract translation: 本发明要求一种新颖的软件应用程序，其使用具有Windows或Linux操作系统的计算机来促进流和混合具有几乎零延迟的音频和/或视频。 典型的计算机操作系统的结构不足以实时发送或接收音频和/或视频数据。 或者，专用集成电路（ASIC）和现场可编程阵列（FPGA）用于通过网络发送和接收音频和/或视频数据，这需要额外的硬件，空间和成本。本发明的属性对 成功的产品在现代市场。

    Regulated current source for thermal printhead
    9.
    发明授权
    Regulated current source for thermal printhead 失效
    热敏打印头的电流源

    公开(公告)号：US4434356A

    公开(公告)日：1984-02-28

    申请号：US452346

    申请日：1982-12-22

    Applicant: Timothy P. Craig ,  John W. Pettit ,  Michael R. Timperman

    Inventor： Timothy P. Craig ,  John W. Pettit ,  Michael R. Timperman

    IPC: B41J2/35 ,  G05F1/56 ,  B41J3/20

    CPC classification number: B41J2/35 ,  Y10T307/305 ,  Y10T307/352

    Abstract: A current-drive circuit (FIG. 1) is provided to drive each of forty electrodes 41. Voltage at the electrodes 41 is monitored on line 49 as a control-input to a voltage-regulator circuit (FIG. 2), to produce the drive voltage Vdr. Vdr minus a current-level reference Vlev is applied as the input of a differential amplifier (transistors 3, 15, 51 and 53), thereby applying Vdr-Vlev on line 27. A constant current through the electrode 41 is produced across register 25. As the lowest voltage at all driven electrodes shifts, the regulator circuit (FIG. 2) shifts Vdr the same amount, employing differentially connected transistors 72 and 74, and Zener 120 to set the level of Vdr. Since most of the active elements operated within narrow limits, the circuit can be extensively miniaturized.

    Abstract translation: 提供电流驱动电路（图1）以驱动四十个电极41中的每一个。电极41上的电压作为对稳压器电路（图2）的控制输入在线路49进行监视，以产生 驱动电压Vdr。 Vdr减去电流电平参考Vlev作为差分放大器（晶体管3,15,51和53）的输入，由此在线27上施加Vdr-Vlev。通过电极41的恒定电流跨越寄存器25产生。 随着所有驱动电极的最低电压偏移，调节器电路（图2）使用差分连接的晶体管72和74以及齐纳二极120来设定Vdr的电平来使Vdr移动相同的量。 由于大多数有源元件在窄限制范围内工作，电路可以被广泛地小型化。

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