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    • 2. 发明专利
    • Transmission/reception method, and receiver
    • 传输/接收方法和接收器
    • JP2011172120A
    • 2011-09-01
    • JP2010035417
    • 2010-02-19
    • Mitsubishi Electric Corp三菱電機株式会社
    • SUZUKI HIROSHIIMAO KATSUMUNE
    • H04J11/00H04J1/00
    • PROBLEM TO BE SOLVED: To provide a transmission/reception method and a receiver which achieve simplification of signal processing and reduction in a circuit scale and are suited to multicarrier transmission.
      SOLUTION: A transmitter performs orthogonal modulation of a plurality of carrier waves having frequencies represented by f
      n =2
      n f
      0 (n=0, 1, ..., m) (f
      0 is a fundamental frequency), and multiplexes the resulting carrier waves, to generate a multicarrier signal. The receiver performs sampling at a frequency four times as high as the highest carrier frequency contained in the multicarrier signal. The value I
      n of an I signal component is obtained by dividing the cumulative sum of sample data values s[2
      m-n 2k](-1)
      k over a range from k=0 to k=2
      n+1 -1 by 2
      n+1 . The value Q
      n of a Q signal component is obtained by dividing the cumulative sum of sample data values s[2
      m-n (2k+1)](-1)
      (k+1) over the range from k=0 to k=2
      n+1 -1 by 2
      n+1 .
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供实现信号处理简化和电路规模缩小并适用于多载波传输的发送/接收方法和接收机。 解决方案:发射机执行具有由f(s)表示的频率的多个载波的正交调制,其中n(x) = 0,1,...,m)(f 0 是基频),并且多路复用所生成的载波,以产生多载波信号。 接收机以包含在多载波信号中的最高载波频率的四倍的频率进行采样。 I信号分量的值I n 通过将样本数据值s [2 mn 2k]( - 1) k < SP>从k = 0到k = 2 n + 1 -1乘以2 n + 1 的范围。 通过将样本数据值s [2 mn (2k + 1)]( - 1) n (k + 1)在从k = 0到k = 2 n + 1 -1乘以2 n + 1 的范围内。 版权所有(C)2011,JPO&INPIT
    • 3. 发明专利
    • Imaging optical system
    • 成像光学系统
    • JP2008224887A
    • 2008-09-25
    • JP2007060700
    • 2007-03-09
    • Mitsubishi Electric Corp三菱電機株式会社
    • SUZUKI HIROSHINAKANO YOSHITAKATAMAGAWA YUKIHISANOJI TOSHIYUKI
    • G02B17/08G02B13/18
    • PROBLEM TO BE SOLVED: To obtain a simple and compact imaging optical system with low f-number.
      SOLUTION: The imaging optical system is provided with a block lens 5 having three reflection surfaces arranged in order of a first reflection surface 7, a second reflection surface 8 and a third reflection surface 9 in the optical path order of an incident light beam from a lens group 4 constituted of a lens having positive power. The reflection surfaces of the block lens 5 are arranged without blocking the incident light beam, and arranged so that luminous flux reflected on the first reflection surface 7 and made incident on the second reflection surface 8, and luminous flux reflected on the third reflection surface 9 may cross partially at least.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:获得具有低f值的简单且紧凑的成像光学系统。 解决方案:成像光学系统设置有具有三个反射面的块透镜5,该反射面以入射光的光程顺序由第一反射面7,第二反射面8和第三反射面9的顺序排列 来自由具有正功率的透镜构成的透镜组4的光束。 块状透镜5的反射面被布置成不阻挡入射光束,并且被布置成使得在第一反射面7上反射并入射到第二反射面8上的光束和在第三反射面9上反射的光束 可能至少部分交叉。 版权所有(C)2008,JPO&INPIT
    • 4. 发明专利
    • Transmitter
    • 发射机
    • JP2007142617A
    • 2007-06-07
    • JP2005331010
    • 2005-11-16
    • Mitsubishi Electric Corp三菱電機株式会社
    • SUZUKI HIROSHI
    • H04B1/04H04B7/26
    • Y02D70/00Y02D70/40Y02D70/449
    • PROBLEM TO BE SOLVED: To provide a technology for suppressing consumption of a battery without complicating the constitution of a transmitter comprising a power amplifying section operating based on the battery voltage. SOLUTION: A step-down power supply section 4 outputs a voltage Vreg of a constant level when a transmission power designation value CP is larger than a first threshold. Under a state where a power amplifying section 1 is not transmitting a transmission signal SS, a power supply voltage selecting section 5 outputs the voltage Vreg as the power supply voltage Vc of the power amplifying section 1. The power supply voltage Vc is switched from the voltage Vreg to the battery voltage Vbat at the power supply voltage selecting section 5 when a voltage monitoring section 6 detects a fact that the power supply voltage Vc when the transmission power designation value CP is larger than a second threshold not smaller than the first threshold became smaller than a predetermined threshold voltage when the voltage Vreg is outputted as the power supply voltage Vc under a state where the power amplifying section 1 is transmitting the transmission signal SS. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种用于抑制电池消耗的技术,而不会使包括基于电池电压工作的功率放大部分的发射机的结构复杂化。 解决方案:当发送功率指定值CP大于第一阈值时,降压电源部分4输出恒定电平的电压Vreg。 在功率放大部分1不发送发送信号SS的状态下,电源电压选择部分5输出电压Vreg作为功率放大部分1的电源电压Vc。电源电压Vc从 当电压监视部分6检测到当发送功率指定值CP大于不小于第一阈值的第二阈值时的电源电压Vc的事实时,电压Vreg与电源电压选择部分5处的电池电压Vbat成为 在功率放大部1正在发送发送信号SS的状态下,将电压Vreg作为电源电压Vc输出时,小于规定的阈值电压。 版权所有(C)2007,JPO&INPIT
    • 8. 发明专利
    • WAVEFRONT SENSOR
    • JPH0886689A
    • 1996-04-02
    • JP22197094
    • 1994-09-16
    • MITSUBISHI ELECTRIC CORP
    • SUZUKI HIROSHIMATSUSHITA TADASHIWAKABAYASHI SATOSHI
    • G01J1/00G01M11/00G02B23/02
    • PURPOSE: To determine a wavefront correctly regardless of variation in the environmental conditions by obtaining an error wavefront caused by the temperature variation of a wavefront sensor based on the output from a temperature sensor with an error wavefront operating unit and subtracting the error wavefront thus determined from a wavefront measured based on the output from a photoelectric converter. CONSTITUTION: An error wavefront operating unit 102 calculates the variation of focus position in a collimator lens 8 caused by temperature variation according to a predetermined formula based on the output from a temperature sensor 101 and then converts the variation of focus position into a wavefront. The operating unit 102 also calculates a wavefront produced through variation in the spot position caused by the difference in the coefficient of linear expansion between a lens array 9 and a CCD 10. The operating unit 102 combines two wavefronts into an error wavefront which is delivered to a wavefront operating unit 103. The operating unit 103 subtracts the error wavefront from a measured wavefront subjected to temperature variation thus determining a correct wavefront.