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    • 1. 发明专利
    • Doll play set operated by telecommunication system
    • AU4617300A
    • 2000-11-21
    • AU4617300
    • 2000-05-06
    • JAE HO JUNG
    • JUNG JAE-HO
    • A63J19/00
    • A doll play set operated by a telecommunication system, comprising at least one doll (10) or (20) which includes at least one actuator (16) for actuating the doll in response to an action control signal, a speaker (14) for outputting a voice or sound in response to an audio signal, and an input port (12) for inputting the action control signal and audio signal and applying them respectively to the actuator (16) and speaker (14), and a stage (50) which includes a receiver (34) for receiving a doll control signal from a broadcasting station by wire or wireless through a telephone line or a broadcasting medium, an operation unit (32) for performing an operation for storage or reproduction of the doll control signal received by the receiver (34), a controller (30) for detecting the action control signal and audio signal from the doll control signal received by the receiver (34), at least one output port (40) for outputting the action control signal and audio signal detected by the controller (30) to the input port (12) in the doll (10) or (20), an audio generator (36) for processing the audio signal detected by the controller (30) and outputting it to the output port (40), and at least one moving member (42) for moving or turning the doll (10) or (20) in various directions under control of the controller (30). The doll can perform a play by conducting a variety of actions in response to input signals.
    • 2. 发明授权
    • Method of measuring error vector magnitude
    • 测量误差矢量幅度的方法
    • US08798124B2
    • 2014-08-05
    • US13614130
    • 2012-09-13
    • Sung Jun LeeYoung-Hoon KimJae Ho Jung
    • Sung Jun LeeYoung-Hoon KimJae Ho Jung
    • H04B3/46H04B17/00H04Q1/20
    • H04L25/0232H04B17/21H04L5/0048
    • A method of checking an error vector magnitude of transmitter in accordance with some embodiments of the inventive concept may include dividing a transmission baseband signal which the transmitter transmits into a plurality of processing units; performing a transmitter function and an ideal receiver function with respect to each of the plurality of processing units; generating a reception baseband signal by recombining a processing result of each of the plurality of processing units; and calculating an error vector magnitude (EVM) by comparing the transmission baseband signal with the reception baseband signal. A simplified method of checking an error vector magnitude of transmitter in accordance with some embodiments of the inventive concept may include generating symbols composed of only pilots; generating symbol composed of only data; and checking an error vector magnitude (EVM) using the all the symbols.
    • 根据本发明构思的一些实施例的检查发射机的误差向量幅度的方法可以包括将发射机发送的发射基带信号划分成多个处理单元; 针对所述多个处理单元中的每一个执行发送功能和理想的接收功能; 通过重新组合多个处理单元中的每一个的处理结果来产生接收基带信号; 以及通过将所述发送基带信号与所述接收基带信号进行比较来计算误差向量幅度(EVM)。 根据本发明构思的一些实施例,检查发射机的误差矢量幅度的简化方法可以包括产生仅由导频组成的符号; 生成仅由数据组成的符号; 并使用所有符号检查误差矢量幅度(EVM)。
    • 4. 发明授权
    • Amplifier structure and amplification method thereof
    • 放大器结构及其放大方法
    • US08521104B2
    • 2013-08-27
    • US13335481
    • 2011-12-22
    • Sung Jun LeeJae Ho Jung
    • Sung Jun LeeJae Ho Jung
    • H04B1/04
    • H03F3/24H03F3/217H03F2200/331
    • Provided is an amplifier structure. The amplifier structure includes a delta-sigma modulator, an up converter, a power amplifier, and a band-pass filter. The delta-sigma modulator receives an IF signal to delta-sigma modulate the IF signal. The up converter up-converts a frequency of the delta-sigma modulated signal with an LO signal. The power amplifier amplifies a power of the up-converted signal. The band-pass filter filters the amplified signal of a selected band. The amplifier structure performs the delta-sigma modulation operation on an IF input signal, and thus can considerably decrease a delta-sigma modulation operation speed compared to a typical amplifier structure and moderate the specification in implementing a power amplifier.
    • 提供了放大器结构。 放大器结构包括Δ-Σ调制器,上变频器,功率放大器和带通滤波器。 Δ-Σ调制器接收IF信号到Δ-Σ调制IF信号。 上变频器用LO信号上变频Δ-Σ调制信号的频率。 功率放大器放大上变频信号的功率。 带通滤波器对所选频带的放大信号进行滤波。 放大器结构对IF输入信号执行Δ-Σ调制操作,因此与典型的放大器结构相比可以显着地降低Δ-Σ调制操作速度,并适度实现功率放大器的规范。
    • 5. 发明授权
    • Variable gain amplifier with fixed bandwidth
    • 具有固定带宽的可变增益放大器
    • US08519786B2
    • 2013-08-27
    • US13296626
    • 2011-11-15
    • Seunghyun JangJae Ho Jung
    • Seunghyun JangJae Ho Jung
    • H03F1/34H03G3/20
    • H03G1/0088
    • Provided is a variable gain amplifier. The variable gain amplifier includes an operational amplifier, a variable feedback impedance unit, a variable compensation impedance unit, and a variable current source. The variable feedback impedance unit is connected between an inverting input terminal and output terminal of the operational amplifier, and has a feedback impedance value which varies for gain control. The variable compensation impedance unit is connected to the inverting input terminal, and has a compensation impedance value which varies in response to change of the feedback impedance value for maintaining a constant feedback factor. The variable current source is connected to the inverting input terminal, and supplies an output current, which varies in response to change of the compensation impedance value, to the variable compensation impedance unit.
    • 提供了可变增益放大器。 可变增益放大器包括运算放大器,可变反馈阻抗单元,可变补偿阻抗单元和可变电流源。 可变反馈阻抗单元连接在运算放大器的反相输入端子和输出端子之间,并具有增益控制变化的反馈阻抗值。 可变补偿阻抗单元连接到反相输入端,并且具有响应于用于维持恒定反馈因子的反馈阻抗值的变化而变化的补偿阻抗值。 可变电流源连接到反相输入端,并将响应于补偿阻抗值的变化而变化的输出电流提供给可变补偿阻抗单元。
    • 9. 发明申请
    • PREDISTORTION APPARATUSES AND METHODS
    • 预测装置和方法
    • US20120154041A1
    • 2012-06-21
    • US13331377
    • 2011-12-20
    • Young-Hoon KIMGweon Do JOJung Hoon OHJae Ho JUNG
    • Young-Hoon KIMGweon Do JOJung Hoon OHJae Ho JUNG
    • H03F1/26
    • H03F1/3247H03F1/3258H03F2201/3209H03F2201/3212H03F2201/3224
    • Provided is a predistortion apparatus which performs predistortion by reflecting a memory effect when linearizing an output of a nonlinear device using a wideband signal. The predistortion apparatus includes a predistortion unit and a coefficient extraction unit. The predistortion unit selects and outputs one of outputs of the sub-predistorters as an output signal according to intensity of an input signal. The coefficient extraction unit selects one of a plurality of coefficient extractors according to intensity of a nonlinear signal which is generated in response to the output signal, extracts a plurality of predistortion coefficients with the nonlinear signal and the output signal, and delivers the extracted predistortion coefficients to the predistortion unit. Accordingly, the memory effect is reflected even when the input signal is a wideband signal.
    • 提供一种预失真装置,其通过使用宽带信号线性化非线性装置的输出来反映存储器效应来执行预失真。 预失真装置包括预失真单元和系数提取单元。 预失真单元根据输入信号的强度选择并输出副预失真器的输出之一作为输出信号。 系数提取单元根据输出信号产生的非线性信号的强度,选择多个系数提取器中的一个,并用非线性信号和输出信号提取多个预失真系数,并将提取的预失真系数 到预失真单位。 因此,即使当输入信号是宽带信号时也会反映存储效应。