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    • 5. 发明申请
    • Signal Processing Device and Method
    • 信号处理装置及方法
    • US20080159367A1
    • 2008-07-03
    • US11993259
    • 2006-06-20
    • Kiyoshi YanagisawaNoriaki Matsuno
    • Kiyoshi YanagisawaNoriaki Matsuno
    • H04B17/00H04Q1/20
    • H04L27/368H04B1/0475H04L1/24H04L1/244
    • A test signal, the amplitudes of which are equal in the positive and negative directions, is generated and supplied to a signal processing circuit that performs a frequency conversion. Signals outputted from the signal processing circuit are detected to provide detected signals, which comprise a detected positive signal corresponding to a positive signal of the test signal and a detected negative signal corresponding to a negative signal of the test signal. The level of the detected positive signal is compared with the level of the detected negative signal to output a comparison result that indicates which level is higher. Additionally, an offset correction signal, which causes the level difference between the detected positive signal and the detected negative signal to be within a predetermined range of tolerance, is generated based on the comparison result. Then, an offset correction of the test signal and an externally supplied modulated signal is performed in accordance with the offset correction signal.
    • 其正弦和负方向的幅度相等的测试信号被产生并提供给进行频率转换的信号处理电路。 检测从信号处理电路输出的信号,以提供检测信号,该检测信号包括对应于测试信号的正信号的检测到的正信号和对应于测试信号的负信号的检测到的负信号。 将检测到的正信号的电平与检测到的负信号的电平进行比较,以输出指示哪个电平较高的比较结果。 另外,基于该比较结果,产生使检测出的正信号和检测到的负信号之间的电平差处于预定的容差范围内的偏移校正信号。 然后,根据偏移校正信号执行测试信号和外部提供的调制信号的偏移校正。
    • 7. 发明授权
    • Screw rotor and method of generating tooth profile therefor
    • 螺旋转子及其齿形生成方法
    • US5800151A
    • 1998-09-01
    • US922553
    • 1997-09-03
    • Takeshi KawamuraKiyoshi YanagisawaShigeyoshi Nagata
    • Takeshi KawamuraKiyoshi YanagisawaShigeyoshi Nagata
    • F01D1/38F01C1/08F04C18/16F04C25/02F04C29/00F01C1/16
    • F01C1/084F05B2200/261Y10T29/49242
    • The transverse tooth profile of a screw rotor which meshes with a companion screw rotor is defined by a tooth root circular arc, an outer circumferential circular arc, and two curves interconnecting the tooth root circular arc and the outer circumferential circular arc. One of the curves is defined by a trochoid curve generated by a point on an outer circumferential surface of the companion screw rotor. Alternatively, the curve may comprise two curve segments, and one of the two curve segments comprising a tooth tip arc which is defined as an arc having a radius of curvature equal to or smaller than the difference between a radius of curvature of the outer circumferential circular arc and a radius of a pitch circle of the tooth profile, and the other of the two curve segments comprising a curve connected to the tooth root circular arc and determined by a curve generated by the tooth tip arc of the companion screw rotor. The other curve is defined by determining a curve which defines an imaginary rack and thereafter producing a tooth profile curve generated by the imaginary rack.
    • 与配对螺杆转子啮合的螺杆转子的横向齿廓由齿根圆弧,外周圆弧和将牙根圆弧与外周圆弧相互连接的两条曲线限定。 曲线中的一条由伴随螺旋转子的外圆周表面上的点产生的次摆线​​定义。 或者,曲线可以包括两个曲线段,并且两个曲线段中的一个包括齿顶弧形,其被定义为具有等于或小于外周圆周的曲率半径之间的差的弧的弧形 圆弧和齿廓的节圆的半径,并且两个曲线段中的另一个包括连接到齿根圆弧的曲线,并且由伴随螺旋转子的齿顶弧产生的曲线确定。 另一条曲线是通过确定一条曲线来定义的,该曲线限定一个虚拟齿条,然后产生由虚架产生的齿形曲线。
    • 10. 发明申请
    • SIGNAL PROCESSING APPARATUS AND SIGNAL PROCESSING METHOD
    • 信号处理装置和信号处理方法
    • US20100198540A1
    • 2010-08-05
    • US12668626
    • 2008-07-09
    • Kiyoshi YanagisawaNoriaki Matsuno
    • Kiyoshi YanagisawaNoriaki Matsuno
    • G06F19/00G01R29/00
    • H04L27/364H04L25/06
    • An apparatus includes a test signal generation unit supplying test signals to an orthogonal modulator and a control unit that based on a result of decision by comparison and decision of detection results of a detector detecting envelopes of modulated signals output from the orthogonal modulator responsive to the test signals, derives adjustment values and a compensation value. An estimation means estimates a DC offset and an IQ mismatch of the orthogonal modulator, based on the derived compensation value. The test signals includes a first set including a first test signal (I1, Q1) and a second test signal (I2, Q2) having a predetermined relationship with the first test signal, and a second set of which in-phase and quadrature components have predetermined relationships respectively with in-phase and quadrature components of the first set.
    • 一种装置,包括:测试信号生成单元,向正交调制器提供测试信号;以及控制单元,其基于通过比较判定结果判断结果,并且响应于该测试,检测器检测从正交调制器输出的调制信号的包络检测结果 信号,导出调整值和补偿值。 估计装置基于导出的补偿值估计正交调制器的DC偏移和IQ失配。 测试信号包括第一组,其包括与第一测试信号具有预定关系的第一测试信号(I1,Q1)和第二测试信号(I2,Q2),以及第二组,其中同相和正交分量具有 分别与第一组的同相和正交分量的预定关系。