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1. 发明授权

US5005186A Digital demodulator apparatus 失效
标题翻译：数字解调器装置
公开(公告)号：US5005186A
公开(公告)日：1991-04-02
申请号：US265459
申请日：1988-10-13
申请人： Yoshihito Aono , Takanori Iwamatsu , Morihiko Minowa , Sadao Takenaka , Yoshimasa Daidoh , Hiroshi Nakamura , Nobutsugu Fujino
发明人： Yoshihito Aono , Takanori Iwamatsu , Morihiko Minowa , Sadao Takenaka , Yoshimasa Daidoh , Hiroshi Nakamura , Nobutsugu Fujino
IPC分类号： H04L27/34 , H04L27/38
CPC分类号： H04L27/38
摘要： A digital demodulation apparatus which has a detector (11) for receiving transmission signals (S.sub.in) modulated under a multivalue quadrature amplitude modulation method in accordance with a honeycomb signal structure point arrangement. The detector produces I channel and Q channel demodulation signals. The apparatus also includes a discriminator (13) which converts the analog demodulation signals (Sa) to digital demodulation signals (Sd), a memory (21) which successively receives said digital demodulation signals (Sd) and reproduces corresponding original data. The read only memory (21) stores data representatives of the honeycomb signal structure point arrangement, and stores polarity bits (P) and error bits (.epsilon.) of the signal points.
摘要翻译： PCT No.PCT / JP88 / 00280 Sec。 371日期：1988年10月13日 102（e）日期1988年10月13日PCT提交1988年3月17日PCT公布。第WO88 / 07302号公报日期：1988年9月22日。一种数字解调装置，具有用于接收根据蜂窝信号结构点布置在多值正交幅度调制方法下调制的传输信号（Sin）的检测器（11）。检测器产生I通道和Q通道解调信号。该装置还包括将模拟解调信号（Sa）转换为数字解调信号（Sd）的鉴频器（13），连续接收所述数字解调信号（Sd）并再现对应的原始数据的存储器（21）。只读存储器（21）存储蜂窝信号结构点布置的数据代表，并存储信号点的极性位（P）和误差位（ε）。

2. 发明授权

US4471162A Coordinate reading apparatus 失效
标题翻译：坐标读取装置
公开(公告)号：US4471162A
公开(公告)日：1984-09-11
申请号：US454079
申请日：1982-12-28
申请人： Yoshihito Aono , Yukio Takeda , Naoto Tanabe
发明人： Yoshihito Aono , Yukio Takeda , Naoto Tanabe
IPC分类号： G06F3/046 , G01B7/00 , G06F3/033 , G08C21/00
CPC分类号： G06F3/046
摘要： A coordinate reading apparatus for reading positions on a tablet, having magnetic-field generating coils, with a magnetic-field detector. The magnetic-field detector produces an analog electric signal corresponding to a desired position to be read on the tablet in response to the magnetic fields induced by the magnetic-field generating coils. The analog electric signal generated by the detector is composed of both a fundamental wave component signal and an n-th order harmonic wave component signal (n being an integer equal to or larger than 2). A processing unit for receiving the analog electric signal from the magnetic-field detector and produces coordinate data corresponding to the desired position to beread on the tablet by analyzing a first rotating magnetic-field vector induced by the fundamental wave component signal and a second rotating magnetic-field vector induced by the n-th order harmonic wave component signal. The phase component of the fundamental wave component signal and the phase component of the n-th harmonic wave component signal are processed so that the coordinate data can be read by the processing unit.
摘要翻译：一种坐标读取装置，用于利用磁场检测器读取具有磁场产生线圈的平板电脑上的位置。磁场检测器响应于由磁场产生线圈引起的磁场而产生对应于在平板电脑上读取的期望位置的模拟电信号。由检测器产生的模拟电信号由基波分量信号和n次谐波分量信号（n为2以上的整数）组成。一种处理单元，用于从磁场检测器接收模拟电信号，并通过分析由基波分量信号引起的第一旋转磁场矢量和第二旋转磁场产生对应于在平板电脑上待读取的期望位置的坐标数据由n阶谐波分量信号诱导的场矢量。处理基波分量信号的相位分量和n次谐波分量信号的相位分量，使得坐标数据能够被处理单元读取。

3. 发明授权

US4860316A Multilevel amplitude modulation and demodulation communication system 失效
标题翻译：多电平幅度调制和解调通信系统
公开(公告)号：US4860316A
公开(公告)日：1989-08-22
申请号：US156755
申请日：1988-02-18
申请人： Sadao Takenaka , Yoshihito Aono , Takanori Iwamatsu , Morihiko Minowa , Yoshimasa Daido , Hiroshi Nakamura
发明人： Sadao Takenaka , Yoshihito Aono , Takanori Iwamatsu , Morihiko Minowa , Yoshimasa Daido , Hiroshi Nakamura
IPC分类号： H04L27/34
CPC分类号： H04L27/3411
摘要： A digital communication system using a QAM signal and a honeycomb constellation multilevel signal. The digital communication system includes a modulator having a unit for transforming in-phase and quadrature-phase data arranged in a quadrature lattice constellation into two data arranged in a honeycomb constellation, and a unit for amplitude-modulating the transformed data. A demodulator demodulates a transmitted signal output from the modulator.

4. 发明授权

US5844950A Cross polarization interference canceler and cross polarization interference eliminating apparatus using the same 失效
标题翻译：交叉极化干扰消除器和使用其的交叉极化干扰消除装置
公开(公告)号：US5844950A
公开(公告)日：1998-12-01
申请号：US794370
申请日：1997-02-04
申请人： Yoshihito Aono , Takanori Iwamatsu , Toshio Kawasaki
发明人： Yoshihito Aono , Takanori Iwamatsu , Toshio Kawasaki
IPC分类号： H04L27/38 , H04B3/06 , H04B7/00 , H04B7/005 , H04B7/10 , H04J11/00 , H03D1/04
CPC分类号： H04B7/005 , H04B7/002 , H04B7/10
摘要： A cross polarization interference canceler includes a digital conversion circuit for subjecting a demodulated signal of one channel to an analog-to-digital conversion out of two channels which are independently formed using carriers having the same frequency but having planes of polarization which are mutually orthogonal. An interference cancelling circuit cancels interference caused by the other channel out of the two channels, with respect to the demodulated signal which is digitally converted by the digital conversion circuit. An integrator circuit performs an integration process with respect to the demodulated signal which is digitally converted by the digital conversion circuit so as to provide negative feedback to the digital conversion circuit.
摘要翻译：交叉极化干扰消除器包括一个数字转换电路，用于使一个通道的解调信号在两个通道之间进行模数转换，这两个通道使用具有相同频率但具有相互正交的极化平面的载波独立地形成。相对于由数字转换电路数字转换的解调信号，干扰消除电路消除由两个信道中的另一个信道引起的干扰。积分器电路对由数字转换电路数字转换的解调信号执行积分处理，以向数字转换电路提供负反馈。

5. 发明授权

US5406589A Fractionally spaced cross-polarization interference canceller 失效
标题翻译：分数间隔交叉极化干扰消除器
公开(公告)号：US5406589A
公开(公告)日：1995-04-11
申请号：US909712
申请日：1992-07-07
申请人： Takanori Iwamatsu , Toshiyuki Takizawa , Kenzo Kobayashi , Yoshihito Aono
发明人： Takanori Iwamatsu , Toshiyuki Takizawa , Kenzo Kobayashi , Yoshihito Aono
IPC分类号： H04B7/00 , H04B1/10 , H01Q21/06 , H01Q21/24
CPC分类号： H04B7/002
摘要： A fractionally spaced cross-polarization interference canceller, wherein a compensation signal is generated through an adaptive filter operating in a frequency that is an integer multiple of a transmission data frequency. The cross-polarization interference canceller includes a mechanism for generating an error signal used to control coefficients of the adaptive filter in the integer multiple frequency. The mechanism is realized, for example, by using a waveform generator generating an estimate of a baseband signal in the integer multiple frequency using a plurality of estimates of transmission data and coefficients determined by an impulse response of a transmission path.
摘要翻译：一种分数间隔的交叉极化干扰消除器，其中通过以传输数据频率的整数倍的频率工作的自适应滤波器产生补偿信号。交叉极化干扰消除器包括用于产生用于控制整数倍频率的自适应滤波器的系数的误差信号的机构。该机制例如通过使用波形发生器来实现，该波形发生器使用传输数据的多个估计和由传输路径的脉冲响应确定的系数来生成整数倍频率的基带信号的估计。

6. 发明授权

US4912726A Decision timing control circuit 失效
标题翻译：决策定时控制电路
公开(公告)号：US4912726A
公开(公告)日：1990-03-27
申请号：US247444
申请日：1988-08-31
申请人： Takanori Iwamatsu , Yoshihito Aono , Morihiko Minowa , Sadao Takenaka
发明人： Takanori Iwamatsu , Yoshihito Aono , Morihiko Minowa , Sadao Takenaka
IPC分类号： H04L7/02 , H04L7/033
CPC分类号： H04L7/0062 , H04L7/0334
摘要： The present invention relates to a circuit which controls the decision timing for deciding multi-level signal to the optimum decision timing. The control is carried out in such a manner as reducing deviation of phase of decision clock by deciding slope of multi-level signal at the center decision timing from the decision data at least continuous three decision timings and deciding deviation of decision timing from the slope and error signal at the center decision timing. Moreover, two kinds of slope decision are realized and the desired slope decision can be selected in accordance with the line condition.
摘要翻译： PCT No.PCT / JP88 / 00013 Sec。 371日期1988年8月31日 102（e）日期1988年8月31日PCT提交1988年1月8日PCT公布。出版物WO88 / 05235 日期：1988年7月14日。本发明涉及一种电路，其控制用于将多电平信号判定为最佳判定定时的判定定时。以至少连续的三个决定定时从决策数据决定中心判定时刻的多电平信号的斜率，决定判定时钟偏离斜率的判定时间的偏差，中心决策时刻的误差信号。此外，实现了两种斜率决定，并且可以根据线路条件选择期望的斜率决定。

7. 发明授权

US4809298A Radio data transmission system 失效
标题翻译：无线数据传输系统
公开(公告)号：US4809298A
公开(公告)日：1989-02-28
申请号：US53396
申请日：1987-04-30
申请人： Toshiaki Sakane , Sadao Takenaka , Morihiko Minowa , Yoshihito Aono , Yoshimasa Daidoh
发明人： Toshiaki Sakane , Sadao Takenaka , Morihiko Minowa , Yoshihito Aono , Yoshimasa Daidoh
IPC分类号： H04B7/005 , H04L25/03 , H04L25/49
CPC分类号： H04B7/005 , H04L25/03038
摘要： The present invention relates to a radio transmission system. The system includes a transversal type automatic equalizer which controls tap weight based on bit error rate (BER) from a pseudo error pulse. In the equalizer, the threshold value (BER1) which defines the mode change for tap weighting control from normal to reset is different from the threshold value (BER2) from reset to normal. Therefore, the mode change is carried out by a simple circuit properly and stably.
摘要翻译： PCT No.PCT / JP86 / 00437 Sec。 371日期1987年4月30日 102（e）1987年4月30日PCT PCT日期：1986年8月27日PCT公布。第WO87 / 01535号公报 1987年3月12日发布。无线传输系统技术领域本发明涉及一种无线传输系统。该系统包括横向型自动均衡器，其基于来自伪误差脉冲的误码率（BER）来控制抽头重量。在均衡器中，定义从正常到复位的分接加权控制的模式改变的阈值（BER1）不同于从复位到正常的阈值（BER2）。因此，通过简单的电路正确稳定地进行模式切换。

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