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    • 54. 发明授权
    • Signal preprocessing circuit of a line sensor
    • 线传感器信号预处理电路
    • US4868685A
    • 1989-09-19
    • US199943
    • 1988-05-27
    • Takeshi Ueno
    • Takeshi Ueno
    • H04N1/19H04N1/028H04N1/40H04N1/401
    • H04N1/401H04N1/40056
    • A preprocessing circuit of a line sensor which includes a plurality of photoelectric elements arranged in the form of a single array and divided into a plurality of blocks is provided. The preprocessing circuit includes a differential input/differential output preamplifier having a pair of input terminals and a pair of output terminals. A pair of read output data is collected by the preamplifier from a pair of photoelectric elements which are located substantially symmetrically with respect to the center of the line sensor while the line sensor is being scanned electronically. A pair of outputs from the preamplifier is selected such that there remain an output signal of a predetermined polarity. And, a peak value of the output of a predetermined polarity is sampled and held and it is adjusted in accordance with a dark level correction data stored in a memory for each of the photoelectric elements. The memory also stores a gain correction data for each of the photoelectric elements, which is used for correcting the gain of the output signal. Then, the output signal is converted into a digital signal.
    • 提供一种线传感器的预处理电路,其包括以单个阵列形式排列并分成多个块的多个光电元件。 预处理电路包括具有一对输入端和一对输出端的差分输入/差分输出前置放大器。 一对读输出数据由前置放大器从一对光电元件收集,该对光电元件在线传感器被电子扫描的同时相对于线传感器的中心大致对称地定位。 选择来自前置放大器的一对输出,使得保持预定极性的输出信号。 并且,对预定极性的输出的峰值进行采样和保持,并且根据存储在每个光电元件的存储器中的暗电平校正数据进行调整。 存储器还存储用于校正输出信号的增益的每个光电元件的增益校正数据。 然后,将输出信号转换为数字信号。
    • 55. 发明授权
    • Wireless power transmitter
    • 无线电力变送器
    • US09190850B2
    • 2015-11-17
    • US13342381
    • 2012-01-03
    • Kohei OnizukaTakeshi Ueno
    • Kohei OnizukaTakeshi Ueno
    • H04B5/00H02J5/00H02J17/00
    • H02J50/12H02J5/005H02J17/00H02J50/80H04B5/00
    • An example wireless power transmitter is configured for wirelessly transmitting a signal to a power receiving apparatus including a first resonance circuit and a load circuit. The first resonance circuit includes a power receiving coil and a first capacitor. The example wireless power transmitter includes a power supply that has a variable oscillation frequency and generates a signal having the oscillation frequency; a second resonance circuit that transmits the signal to the power receiving apparatus; a measuring unit that measures a signal reflection coefficient, the signal reflection coefficient being determined based on magnitude of the signal and magnitude of a signal reflected on the second resonance circuit to the power supply; and a controller that detects a value of the oscillation frequency making the signal reflection coefficient smaller than or equal to a threshold value, and calculates an electromagnetic coupling coefficient between the power transmission coil and the power receiving coil based on the detected value.
    • 示例性无线电力发射机被配置为将信号无线地发送到包括第一谐振电路和负载电路的电力接收设备。 第一谐振电路包括受电线圈和第一电容器。 示例性无线电力发射机包括具有可变振荡频率并产生具有振荡频率的信号的电源; 将所述信号发送到所述电力接收装置的第二谐振电路; 测量单元,其测量信号反射系数,所述信号反射系数根据所述信号的大小和在所述第二谐振电路上反射到所述电源的信号的大小确定; 以及控制器,其检测使所述信号反射系数小于或等于阈值的振荡频率的值,并且基于所述检测值来计算所述电力传输线圈和所述受电线圈之间的电磁耦合系数。
    • 57. 发明授权
    • AD converter and radio receiver
    • AD转换器和无线电接收器
    • US07532144B2
    • 2009-05-12
    • US12104488
    • 2008-04-17
    • Takafumi YamajiTakeshi Ueno
    • Takafumi YamajiTakeshi Ueno
    • H03M1/12
    • H03M1/123H03M1/44H03M1/46
    • Disclosed is an AD converter including: a first conversion stage including a quantizing part to generate m parallel pieces of quantized signals from m pieces of input analog signals representing n-dimensional vectors (n≦m≦2n), a decoding part to generate m pieces of decoded analog signals from the m parallel pieces of quantized signals, and a residual amplifying part to output m pieces of amplified residual signals by multiplying respective differences between each of the m pieces of analog signals and each of the m pieces of decoded analog signals; a second conversion stage including a quantizing part to generate m parallel pieces of quantized signals from the m pieces of amplified residual signals; and a synthesizing part to generate m parallel pieces of digital signals by synthesizing each of the quantized signals in the first conversion stage and in the second conversion stage at each parallel position.
    • 公开了一种AD转换器,包括:第一转换级,包括量化部分,用于从表示n维向量(n <= m <= 2n)的m个输入模拟信号生成m个并行量化信号,生成 m个来自m个并行量化信号的解码模拟信号,以及残余放大部分,通过将m个模拟信号中的每一个与m个解码模拟信号中的每一个相乘来输出m个放大残差信号 信号; 第二转换级,包括从所述m个放大残差信号中产生m个并行量化信号的量化部分; 以及通过在每个平行位置合成第一转换级和第二转换级中的每个量化信号来产生m个并行数字信号的合成部分。
    • 60. 发明授权
    • Receiving device and automatic gain control method
    • 接收装置和自动增益控制方法
    • US07352310B2
    • 2008-04-01
    • US11753819
    • 2007-05-25
    • Hiroki MoriTakeshi UenoKazumi Sato
    • Hiroki MoriTakeshi UenoKazumi Sato
    • H03M1/62
    • H03M1/185
    • A receiving device includes a receiver; a frequency converter; an A/D converter; and a digital signal processor, wherein the A/D converter includes a variable gain amplifier adjusting a signal level of the analog signal from the frequency converter; an A/D converting portion converting an analog signal from the variable gain amplifier into an m-bit digital signal and an n-bit digital signal and outputting the m-bit digital signal and the n-bit digital signal, the n-bit digital signal serving as an output signal to the digital signal processor; and a gain controller calculating a coarse adjustment gain of the variable gain amplifier on the basis of a power of the m-bit digital signal to control the gain of the variable gain amplifier and calculating a fine adjustment gain on the basis of a power of the n-bit digital signal to control the gain of the variable gain amplifier.
    • 接收装置包括接收机; 变频器; A / D转换器; 以及数字信号处理器,其中所述A / D转换器包括调节来自所述变频器的模拟信号的信号电平的可变增益放大器; A / D转换部分将来自可变增益放大器的模拟信号转换为m位数字信号和n位数字信号,并输出m位数字信号和n位数字信号,n位数字信号 信号作为数字信号处理器的输出信号; 以及增益控制器,其基于所述m位数字信号的功率,计算所述可变增益放大器的粗调增益,以控制所述可变增益放大器的增益,并且基于所述可变增益放大器的功率计算微调整增益 n位数字信号来控制可变增益放大器的增益。