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    • 25. 发明申请
    • Enhanced magnetic field communication system
    • 增强磁场通信系统
    • US20050243010A1
    • 2005-11-03
    • US11165142
    • 2005-06-23
    • John Terry
    • John Terry
    • G06K7/00G06K19/07G06K19/077H04B1/44H04B5/00H01Q1/02
    • G06K19/0723G06K19/07749H04B5/0012H04B5/0081H04B5/02
    • Devices and methods are provided to enhance magnetic field communication. One aspect of the present subject matter relates to a method for transmitting and receiving signals using an antenna element electrically connected to a driver and an amplifier. According to various embodiments of the method, a first signal is transmitted from the antenna element and a second signal that was induced in the antenna element is received. Transmitting the first signal includes driving the first signal through the antenna element using the driver, and monitoring the first signal through an input impedance of the amplifier. Receiving the second signal includes reducing the input impedance of the amplifier, and receiving the second signal at the amplifier through the reduced input impedance. Various embodiments shield the antenna element from electric and electromagnetic fields. Other aspects are provided herein.
    • 提供了设备和方法来增强磁场通信。 本主题的一个方面涉及使用电连接到驱动器和放大器的天线元件来发送和接收信号的方法。 根据该方法的各种实施例,从天线元件发送第一信号,并且接收在天线元件中感应的第二信号。 传输第一信号包括使用驱动器驱动通过天线元件的第一信号,以及通过放大器的输入阻抗监视第一信号。 接收第二信号包括减小放大器的输入阻抗,以及通过减小的输入阻抗在放大器处接收第二信号。 各种实施例屏蔽天线元件免受电场和电磁场的影响。 本文提供了其他方面。
    • 28. 发明授权
    • Method and apparatus for higher dimensional modulation
    • 用于更高维度调制的方法和装置
    • US06614861B1
    • 2003-09-02
    • US09474497
    • 1999-12-29
    • John TerrySteven D. Gray
    • John TerrySteven D. Gray
    • H04B710
    • H04L27/3416H04B7/0669H04L1/0618H04L27/2627
    • An M-ary signal constellation within an N-dimensional space is defined, preferably such that each of the M symbols reside upon the surface of an N-dimensional sphere and such that a minimum distance between symbols is maximized. N orthogonal functions are used as the bases for representing the N-dimensional symbols for transmission. Orthogonal functions exhibiting orthogonality in frequency, time and/or space are also described for this purpose. Furthermore, conventional QAM symbol encoding may be used to represent the N-dimensional symbols, thereby facilitating the use of conventional modulation techniques. In this manner, higher dimensional modulation schemes may be realized.
    • 定义N维空间内的M元信号星座,优选地使得M个符号中的每一个驻留在N维球体的表面上,并且使得符号之间的最小距离最大化。 N个正交函数用作表示用于传输的N维符号的基础。 为此也描述了在频率,时间和/或空间中呈现正交性的正交函数。 此外,常规QAM符号编码可以用于表示N维符号,从而有助于使用常规调制技术。 以这种方式,可以实现更高维度的调制方案。
    • 29. 发明授权
    • Child safety device, alarm and lock for firearms
    • 儿童安全装置,火器报警和锁
    • US06601332B1
    • 2003-08-05
    • US09499539
    • 2000-02-07
    • John Terry Riebling
    • John Terry Riebling
    • F41A1700
    • F41A17/54
    • Trigger lock, safety and alarm devices for a firearm includes a trigger clamp that immobilizes the devices on the firearm in a position in which the device cannot be moved with respect to the firearm to actuate the trigger and discharge the firearm. The devices include a locking mechanism that is used to mount the device to the firearm. An alarm on the device is sounded by actuation of a motion sensor when the device is moved, for example, when the firearm is moved. The alarm can be enabled and disabled using buttons mounted on the devices, and an indicator light flashes on the devices when the alarm is enabled. The keys are also used to operate the locking mechanism to lock or unlock the devices.
    • 火器的触发锁,安全和报警装置包括一个触发夹,用于将装置固定在枪支上,使装置不能相对于枪支移动,从而起动扳机并释放枪支。 这些设备包括用于将设备安装到枪支的锁定机构。 当设备移动时,例如当枪支移动时,通过启动运动传感器来发出设备上的报警。 可以使用安装在设备上的按钮启用和禁用报警,并且在启用报警时,设备上的指示灯将闪烁。 钥匙也用于操作锁定机构以锁定或解锁设备。