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51. 发明授权

US4453255A Characteristic control system for a digital equalizer 失效
标题翻译：数字均衡器的特性控制系统
公开(公告)号：US4453255A
公开(公告)日：1984-06-05
申请号：US345459
申请日：1982-02-03
申请人： Yoshiyuki Tsuchikane , Masao Kasuga
发明人： Yoshiyuki Tsuchikane , Masao Kasuga
IPC分类号： G11B5/035 , H03G5/00 , H03G5/02 , H04L25/03 , H04B3/14
CPC分类号： G11B5/035 , H03G5/005 , H03G5/025 , H04L25/03146
摘要： A characteristic control system for a digital equalizer comprises a digital equalizer constructed from a digital filter, for directly giving a desired equalizing characteristic with respect to a digital pulse-modulated signal, and a control part for changing the equalizing characteristic of the digital equalizer from a first arbitrary characteristic to a second arbitrary characteristic so that one or a plurality of intermediate equalizing characteristic is obtained before reaching the desired second arbitrary characteristic.
摘要翻译：用于数字均衡器的特征控制系统包括由数字滤波器构成的数字均衡器，用于直接给出相对于数字脉冲调制信号的所需均衡特性，以及用于从数字均衡器改变数字均衡器的均衡特性的控制部分第二任意特性的第一任意特征，使得在达到期望的第二任意特性之前获得一个或多个中间均衡特性。

52. 发明授权

US4366471A Variable speed digital reproduction system using a digital low-pass filter 失效
标题翻译：使用数字低通滤波器的变速数字再现系统
公开(公告)号：US4366471A
公开(公告)日：1982-12-28
申请号：US236633
申请日：1981-02-20
申请人： Masao Kasuga
发明人： Masao Kasuga
IPC分类号： H04B1/66 , G11B20/10 , G11B20/24 , G11B27/00 , H03K13/02
CPC分类号： G11B27/005
摘要： A variable speed reproduction system includes a memory in which analog signal is stored as sampled digital data. A variable frequency digital low-pass filter is receptive of the data read out of the memory. A counter provides a binary representation of a count value of time base clock pulses to a comparator for detecting a coincidence with a variable speed setting of a variable resistor. The output of the comparator resets the counter and is used as a source of reading the data out of the memory. The cut-off frequency of the digital filter is controlled in response to the setting of the resistor so that the high frequency component of the analog equivalent of the input digital data which is higher than one-half of the data reading frequency is eliminated to prevent foldover distortion noise which might occur as a result of the difference between the recording and reproducing speeds. The data read out of the memory is fed to a digital-to-analog converter at a constant frequency and the quantum noise of the output data is filtered out by an analog low-pass filter.
摘要翻译：变速再现系统包括存储模拟信号作为采样数字数据存储的存储器。可变频数字低通滤波器可接收从存储器读出的数据。计数器向比较器提供时基脉冲时钟脉冲的计数值的二进制表示，用于检测与可变电阻器的可变速度设置的一致。比较器的输出复位计数器，并用作从存储器读出数据的源。数字滤波器的截止频率响应于电阻器的设置而被控制，使得高于数据读取频率的一半的输入数字数据的模拟等效的高频分量被消除以防止可能由于记录和再现速度之间的差异而发生的倒塌变形噪声。从存储器读出的数据以恒定频率馈送到数模转换器，并且输出数据的量子噪声由模拟低通滤波器滤除。

53. 发明授权

US4186281A Multichannel record disc reproducing apparatus 失效
标题翻译：多通道记录盘再现装置
公开(公告)号：US4186281A
公开(公告)日：1980-01-29
申请号：US843863
申请日：1977-10-20
申请人： Masao Kasuga , Nobuaki Takahashi , Fujio Suzuki , Yoshiki Iwasaki
发明人： Masao Kasuga , Nobuaki Takahashi , Fujio Suzuki , Yoshiki Iwasaki
IPC分类号： H04S3/00 , G11B3/00 , H03D3/00
CPC分类号： H04S3/006
摘要： A multichannel record disc reproducing apparatus comprises a first phase locked loop circuit including a phase comparator and a voltage controlled oscillator for demodulating an angle-modulated wave signal. The modulated signal is separated from a composite signal picked up from a multichannel record disc on which a multiplexed direct wave signal and an angle-modulated wave signal are recorded. The output of the first phase locked loop is a demodulated signal. A second phase locked loop circuit includes a phase comparator and a voltage controlled oscillator, supplied with the separated angle-modulated wave signal and having a lock range of a width which covers and is wider than the maximum lock range width of the first phase locked loop circuit. A synchronous detector compares the phases of the angle-modulated wave signal and the output signal of voltage controlled oscillator of the second phase locked loop. The synchronous detector operates when the phase difference of the two signals deviates sufficiently from a predetermined phase difference. Means are provided for reducing or removing noise components which are developed in the demodulated signal in accordance with the output of the synchronous detector. This noise reduction or removal is provided in the first phase locked loop circuit and/or in a channel for transmitting the demodulated signal.
摘要翻译：多通道记录盘重放装置包括第一锁相环电路，其包括用于解调角度调制波信号的相位比较器和压控振荡器。调制信号与从其上记录有多路复用直接波信号和角度调制波信号的多通道记录盘拾取的复合信号分离。第一锁相环的输出是解调信号。第二锁相环电路包括相位比较器和压控振荡器，被提供有分离的角度调制波信号并且具有覆盖并且比第一锁相环的最大锁定范围宽度宽的宽度的锁定范围电路。同步检波器将角度调制波信号的相位与第二锁相环的压控振荡器的输出信号进行比较。当两个信号的相位差从预定的相位差充分偏离时，同步检测器工作。提供了用于根据同步检测器的输出减少或去除在解调信号中产生的噪声分量的装置。在第一锁相环电路和/或用于发送解调信号的信道中提供该噪声降低或去除。

54. 发明授权

US5494543A Process for producing vibrator for piezoelectric motor 失效
标题翻译：制造压电电动机振动器的方法
公开(公告)号：US5494543A
公开(公告)日：1996-02-27
申请号：US049156
申请日：1993-04-19
申请人： Hiroshi Okano , Hironobu Ito , Masao Kasuga
发明人： Hiroshi Okano , Hironobu Ito , Masao Kasuga
IPC分类号： H02N2/00 , H01L41/09 , B44C1/22
CPC分类号： H01L41/0906 , H01L41/257 , H01L41/332
摘要： A vibrator for a piezoelectric motor is produced by forming an elastic material into a predetermined shape, forming a piezoelectric material on the shaped elastic material for polarization and for driving, forming an electrode for polarization on the piezoelectric material, forming an electrode for driving on the surface of the electrode for polarization or on the piezoelectric material after stripping the electrode for polarization, and etching the elastic material into a predetermined shape has an elastic body and to remove the elastic body from a base. Instead of forming the piezoelectric material on the shaped elastic material for polarization and for driving, an electrode both for polarization and for driving can be formed on one face of the shaped elastic material, and the piezoelectric material can be formed on that electrode.
摘要翻译：通过将弹性材料形成为预定的形状，在成形的弹性材料上形成用于偏振和驱动的压电材料，在压电材料上形成用于极化的电极，形成用于驱动的电极用于极化的电极的表面或剥离用于极化的电极的压电材料的表面，并且将弹性材料蚀刻成预定的形状具有弹性体并且从基体去除弹性体。代替在用于偏振和驱动的成形弹性材料上形成压电材料，可以在成形弹性材料的一个面上形成用于偏振和驱动的电极，并且可以在该电极上形成压电材料。

55. 发明授权

US5079470A Standing-wave type ultrasonic motor and timepiece 失效
标题翻译：标准型超声波电机和定时电机
公开(公告)号：US5079470A
公开(公告)日：1992-01-07
申请号：US512807
申请日：1990-04-23
申请人： Masao Kasuga , Nobuo Tsukada , Hiroshi Kitamura
发明人： Masao Kasuga , Nobuo Tsukada , Hiroshi Kitamura
IPC分类号： G04C3/12 , H01L41/09 , H02N2/00 , H02N2/16
CPC分类号： H02N2/103 , H02N2/0015
摘要： A standing-wave type ultrasonic motor utilizing flexible standing-wave components. Protuberances are provided nearly at every other intermediate positions of the loops and the nodes of flexible standing-waves generated in the vibration member by the piezo-electric element or the electro-strictive element, and a moving member is brought into pressed contact with the protuberances so as to be frictionally driven. A standing-wave type ultrasonic motor is driven in the forward direction and in the reverse direction while fulfilling the reduction in size, stabilization in performance and improvement in efficiency.Furthermore, an analog-type electronic timepiece is obtained using display means that is driven by the standing-wave type ultrasonic motor, featuring reduced size and thickness.

56. 发明授权

US5056201A Method of making a travelling-wave motor 失效
标题翻译：制造行波电动机的方法
公开(公告)号：US5056201A
公开(公告)日：1991-10-15
申请号：US553758
申请日：1990-07-13
申请人： Masao Kasuga , Takayuki Mori , Nobuo Tsukada
发明人： Masao Kasuga , Takayuki Mori , Nobuo Tsukada
IPC分类号： H01L41/09 , H02N2/16
CPC分类号： H02N2/166 , Y10T29/42
摘要： A travelling-wave motor utilizes a flexible travelling waves generated in a stator for driving a rotor. The stator has an elastic vibrating body and a ceramic piezoelectric vibrator provided on one side of the elastic vibrating body. The central portion of the vibrating body is locked and supported on a central axis provided on a ground way. An output extracting projection for driving inside of the outermost periphery of the vibrating body on the one of the vibrating body and the rotor to press and contact with each other. The vibrating body and the piezoelectric vibrator is excited radially in a primary vibration mode.
摘要翻译：行波马达利用在定子中产生的柔性行波来驱动转子。定子具有弹性振动体和设置在弹性振动体一侧的陶瓷压电振动器。振动体的中心部分被锁定并支撑在设置在地面上的中心轴上。一个输出提取突起，用于驱动所述振动体和所述转子之一上的所述振动体的最外周的内部，以相互压接。振动体和压电振动器在主振动模式下径向激励。

57. 发明授权

US5006746A Travelling-wave motor 失效
标题翻译：行波电机
公开(公告)号：US5006746A
公开(公告)日：1991-04-09
申请号：US291459
申请日：1988-12-29
申请人： Masao Kasuga , Takayuki Mori , Nobuo Tsukada
发明人： Masao Kasuga , Takayuki Mori , Nobuo Tsukada
IPC分类号： H01L41/09 , H02N2/16
CPC分类号： H02N2/166 , Y10T29/42
摘要： A travelling-wave motor utilizes a flexible travelling waves generated in a stator for driving a rotor. The stator has an elastic vibrating body and a ceramic piezoelectric vibrator provided on one side of the elastic vibrating body. The central portion of the vibrating body is locked and supported on a central axis provided on a ground way. An output extracting projection for driving inside of the outermost periphery of the vibrating body on the one of the vibrating body and the rotor to press and contact with each other. The vibrating body and the piezoelectric vibrator is excited radially in a primary vibration mode.

58. 发明授权

US4542369A Digital-to-analog converting device 失效
标题翻译：数模转换器
公开(公告)号：US4542369A
公开(公告)日：1985-09-17
申请号：US522057
申请日：1983-08-10
申请人： Masao Kasuga
发明人： Masao Kasuga
IPC分类号： H03M1/00 , H03K13/02
CPC分类号： H03M1/124
摘要： A digital-to-analog converting device comprises a signal processing circuit supplied with a discrete digital signal x.sub.n at a time nT, where n is a natural number and T is a sampling period, for converting the discrete digital signal x.sub.n into a digital signal y.sub.n satisfying an equation ##EQU1## where N is a natural number greater than i, a digital-to-analog converter for converting the output digital signal y.sub.n of the signal processing circuit into an analog signal having a continuous amplitude, and an analog lowpass filter supplied with the output analog signal of the digital-to-analog converter, for eliminating frequency components substantially equal to or higher than 1/2 a sampling frequency F.sub.s of the discrete input digital signal of the signal processing circuit.
摘要翻译：数模转换装置包括在时间nT处提供有离散数字信号xn的信号处理电路，其中n是自然数，T是采样周期，用于将离散数字信号xn转换成数字信号yn 满足其中N是大于i的自然数的等式，用于将信号处理电路的输出数字信号yn转换为具有连续幅度的模拟信号的数 - 模转换器和提供的模拟低通滤波器与数/模转换器的输出模拟信号一起用于消除基本上等于或高于信号处理电路的离散输入数字信号的采样频率Fs的1/2的频率分量。

59. 发明授权

US4321685A Circuit for reducing the limit cycle in a digital filter 失效
标题翻译：降低数字滤波器极限周期的电路
公开(公告)号：US4321685A
公开(公告)日：1982-03-23
申请号：US095554
申请日：1979-11-19
申请人： Masao Kasuga , Masaki Satoh , Takashi Matsushige
发明人： Masao Kasuga , Masaki Satoh , Takashi Matsushige
IPC分类号： H03H17/04 , G06F15/31
CPC分类号： H03H17/0461
摘要： A circuit arrangement of a digital filter comprises an A/D converter supplied with an input analog signal and producing as output a pulse-modulated digital signal, a digital filter for subjecting the digital signal from the A/D converter to a digital operation processing of finite word length, a D/A converter supplied with the resulting output digital signal of the digital filter and converting the same into an analog signal thereby to generate an output analog signal, an input detector for detecting the state wherein there is substantially no input analog signal and responsively producing as output a detection signal, an integrator for integrating the output of the D/A converter, a switching circuit for operating in response to the output detection signal of the input detector to pass the resulting output signal of the integrator, a reference voltage source, and an adder for adding the signal thus passed by the switching circuit and a reference voltage from the reference voltage source and feeding back and imparting the sum signal thus obtained to the A/D converter.
摘要翻译：数字滤波器的电路装置包括一个A / D转换器，它被提供有一个输入的模拟信号，并产生一个脉冲调制的数字信号作为输出;一个数字滤波器，用于对来自A / D转换器的数字信号进行数字运算处理有限字长，D / A转换器，其提供数字滤波器的所得输出数字信号，并将其转换成模拟信号，从而产生输出模拟信号;输入检测器，用于检测基本上没有输入模拟信号的状态信号并且响应地产生检测信号的输出，用于对D / A转换器的输出进行积分的积分器，用于响应于输入检测器的输出检测信号进行操作的开关电路，以通过积分器的所得输出信号，参考电压源和用于将由开关电路通过的信号与来自参考电压源的参考电压相加的加法器 e并反馈并将如此获得的和信号传递给A / D转换器。

60. 发明授权

US4188504A Signal processing circuit for binaural signals 失效
标题翻译：用于双耳信号的信号处理电路
公开(公告)号：US4188504A
公开(公告)日：1980-02-12
申请号：US899892
申请日：1978-04-25
申请人： Masao Kasuga , Nobuaki Takahashi , Masaaki Sato , Kohji Seki , Toshinori Mori , Makoto Iwahara
发明人： Masao Kasuga , Nobuaki Takahashi , Masaaki Sato , Kohji Seki , Toshinori Mori , Makoto Iwahara
IPC分类号： H04S1/00 , H04S5/00 , H04R5/04
CPC分类号： H04S5/00 , H04S7/30 , H04S2400/11
摘要： A binaural signal processing circuit comprising a first system for imparting an input signal with a transfer characteristic equal to the transfer characteristic hL(t; .theta., r) from a sound source to the left ear of a listener, where .theta. represents an angle between the front direction of the listener and the sound source, and r represents a distance between the sound source and the listener, a second system for imparting the input signal with a transfer characteristic equal to the transfer characteristic hR(t; .theta., r) from the sound source to the right ear of the listener, a system for variably controlling the transfer functions of the first and second transfer function imparting systems, and a further system for deriving binaural signals from the first and second transfer function imparting systems.
摘要翻译：一种双耳信号处理电路，包括：第一系统，用于赋予输入信号具有等于从收听者的声源到左耳的传递特性hL（t; theta，r）的传递特性，其中θ表示收听者的前方向和声源，r表示声源与收听者之间的距离，第二系统用于赋予输入信号具有等于来自该音源的传送特性hR（t; theta，r）的传递特性声源到收听者的右耳，用于可变地控制第一和第二传递函数赋予系统的传递函数的系统，以及用于从第一和第二传递函数赋予系统导出双耳信号的另一系统。

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