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    • 32. 发明申请
    • Apparatus and method for converting a signal from a first analog format to a second analog format
    • 用于将来自第一模拟格式的信号转换为第二模拟格式的装置和方法
    • US20050017882A1
    • 2005-01-27
    • US10854769
    • 2004-05-27
    • Richard NelsonBrian SpragueDonald McMullinRichard ProdanPieter Vorenkamp
    • Richard NelsonBrian SpragueDonald McMullinRichard ProdanPieter Vorenkamp
    • H03M1/00H04B1/18H04B1/40H04N7/08H04N7/10
    • H04N21/4382H04N7/0806H04N7/10H04N21/2221H04N21/2383
    • An apparatus for converting a signal from a first analog format to a second analog format. The apparatus has an input port, a first converter, filters, first mixers, second converters, and an output port. The input port is configured to receive the signal. The signal has the first analog format. In an embodiment, the first analog format complies with the SCTE 40 2003 technical standard. In an embodiment, the second analog format is a conventional analog format. The first converter is coupled to the port and is configured to convert the signal to a first digital format. The filters are coupled to the first converter and configured to isolate a first channel of the signal from a second channel of the signal. The first mixers are coupled to the filters and configured to expand the first channel and the second channel to a second digital format. The second converters are coupled to the first mixers and configured to convert the first channel and the second channel to the second analog format. The output port is coupled to the second converters and configured to produce the signal having the second analog format.
    • 一种用于将来自第一模拟格式的信号转换为第二模拟格式的装置。 该装置具有输入端口,第一转换器,滤波器,第一混频器,第二转换器和输出端口。 输入端口配置为接收信号。 该信号具有第一个模拟格式。 在一个实施例中,第一模拟格式符合SCTE 40 2003技术标准。 在一个实施例中,第二模拟格式是常规的模拟格式。 第一转换器耦合到端口,并被配置为将信号转换为第一数字格式。 滤波器耦合到第一转换器并且被配置为将信号的第一信道与信号的第二信道隔离开。 第一混频器耦合到滤波器并且被配置为将第一信道和第二信道扩展到第二数字格式。 第二转换器耦合到第一混频器并且被配置为将第一通道和第二通道转换为第二模拟格式。 输出端口耦合到第二转换器并被配置为产生具有第二模拟格式的信号。
    • 34. 发明授权
    • Brushless DC motor assembly
    • 无刷直流电机总成
    • US6069428A
    • 2000-05-30
    • US10154
    • 1998-01-21
    • Richard Nelson
    • Richard Nelson
    • H02K5/15H02K5/173H02K11/00H02K29/08H02K5/16H02K7/08
    • H02K29/08H02K11/21H02K11/33H02K5/15H02K5/1732
    • A brushless dc motor assembly including control electronics for allowing variable speed, user-controlled motor operation. The control electronics are connected to a control board which is mounted directly to the motor bearing bracket. Hall effect devices for providing rotor rotational position information to the electronics are connected directly to the control board and extend therefrom to a position adjacent the rotor. The electronics control current through the stator winding through a MOSFET H-bridge circuit in dependence of feedback signals from the hall effect devices, a user-controlled enable signal, a motor winding current limit signal, and an under voltage signal.
    • 一种无刷直流电动机组件,包括用于允许变速,用户控制的电动机操作的控制电子装置。 控制电子设备连接到直接安装在电机轴承座上的控制板。 用于向电子设备提供转子旋转位置信息的霍尔效应装置直接连接到控制板并从其延伸到与转子相邻的位置。 根据霍尔效应器件的反馈信号,用户控制的使能信号,电机绕组电流限制信号和欠压信号,电子控制电流通过定子绕组通过MOSFET H桥电路。
    • 36. 发明申请
    • TURBINE METER PRE-SCALING TERMINAL BLOCK ELECTRONICS
    • 涡轮机预放电终端电子元件
    • US20130136204A1
    • 2013-05-30
    • US13307125
    • 2011-11-30
    • James A. JohnsonRichard Nelson
    • James A. JohnsonRichard Nelson
    • H04L27/00
    • G01F1/075G01F1/115G01F1/60G01F15/063
    • An electronic circuit for converting higher-frequency output signals from a sensor into lower-frequency input signals for a discrete input wireless transmitter. The circuit includes a differential amplifier, a digital comparator, a digital frequency divider, and a transistor switch. The differential amplifier amplifies the sensor signals as a function of a frequency of the sensor signals. The digital comparator generates a square wave signal by comparing the amplified sensor signals to a fixed reference voltage. The digital frequency divider generates a lower-frequency signal by dividing the square wave signal. The transistor switch generates the lower-frequency input signals for the discrete input wireless transmitter by switching as a function of the lower-frequency signal from the digital frequency divider.
    • 一种用于将来自传感器的较高频率输出信号转换为用于离散输入无线发射机的较低频率输入信号的电子电路。 该电路包括差分放大器,数字比较器,数字分频器和晶体管开关。 差分放大器将传感器信号放大为传感器信号频率的函数。 数字比较器通过将放大的传感器信号与固定参考电压进行比较来产生方波信号。 数字分频器通过划分方波信号来产生低频信号。 晶体管开关根据来自数字分频器的低频信号的切换产生离散输入无线发射机的低频输入信号。