公开(公告)号：US07706452B2

公开(公告)日：2010-04-27

申请号：US10599378

申请日：2005-03-15

申请人： Suguru Fujita ,  Kazuaki Takahashi ,  Masahiro Mimura

发明人： Suguru Fujita ,  Kazuaki Takahashi ,  Masahiro Mimura

IPC分类号： H04L27/00

CPC分类号： H04B1/7174 ,  G01S13/931 ,  H04B1/71632 ,  H04B1/71637 ,  H04B1/719

摘要： A transmitter using a plurality of pulse signals having different pulse sequence times, a receiver for steadily demodulating pulse signals of only desirable wave, and a wireless system are disclosed. In the transmitter, a control signal generating circuit outputs a control signal for generating a plurality of pulse signals having different pulse sequence generating times, a pulse generating circuit generates a plurality of pulse signals by using the control signal. In the receiver, reception front end receives the plurality of pulse signals having different pulse sequence generating times, delay circuit delays at least one of reception front-end output signals supplied from the reception front-end by a given time, delay pulse composition circuit combines delay signal with reception front-end output signal, so that the receiver steadily demodulates the pulse signals of only the desirable wave.

摘要翻译： 公开了使用具有不同脉冲序列时间的多个脉冲信号的发射机，用于稳定地解调仅期望波的脉冲信号的接收机和无线系统。 在发送器中，控制信号发生电路输出用于产生具有不同脉冲序列产生时间的多个脉冲信号的控制信号，脉冲发生电路通过使用控制信号产生多个脉冲信号。 在接收机中，接收前端接收具有不同脉冲序列产生时间的多个脉冲信号，延迟电路将从接收前端提供的接收前端输出信号中的至少一个延迟给定时间，延迟脉冲合成电路组合 具有接收前端输出信号的延迟信号，使得接收机稳定地解调仅需要的波的脉冲信号。

公开(公告)号：US20090135974A1

公开(公告)日：2009-05-28

申请号：US11909910

申请日：2006-03-29

申请人： Masahiro Mimura ,  Kazuaki Takahashi ,  Suguru Fujita

发明人： Masahiro Mimura ,  Kazuaki Takahashi ,  Suguru Fujita

IPC分类号： H04L7/00

CPC分类号： H03K7/02

摘要： An impulse waveform generating apparatus includes a multistage delay pulse signal generating part for generating a plurality of delay pulse signals by a timing signal; a signal source signal generating part for generating a signal source signal indicating the frequency component of an impulse waveform signal by the delay pulse signals; an envelope formation signal generating part for generating an envelope formation signal indicating the amplitude component of the impulse waveform signal by the delay pulse signals; and a mixer part for multiplying the signal source signal by the envelope formation signal to generate a prescribed impulse waveform signal. The impulse waveform generating apparatus generates the impulse waveform signal from the timing signal. Therefore, the circuit arrangement requires no digital-to-analog converter, the operational frequency of each element can be reduced, and the power consumption can be reduced.

摘要翻译： 脉冲波形发生装置包括：多级延迟脉冲信号产生部分，用于通过定时信号产生多个延迟脉冲信号; 信号源信号产生部分，用于通过延迟脉冲信号产生指示脉冲波形信号的频率分量的信号源信号; 信封形成信号产生部分，用于通过延迟脉冲信号产生指示脉冲波形信号的振幅分量的包络信号; 以及混合器部分，用于将信号源信号乘以包络形成信号以产生规定的脉冲波形信号。 脉冲波形生成装置根据定时信号生成脉冲波形信号。 因此，该电路装置不需要数模转换器，可以降低各元件的工作频率，能够降低功耗。

公开(公告)号：US07457442B2

公开(公告)日：2008-11-25

申请号：US11606139

申请日：2006-11-30

申请人： Masahiro Mimura ,  Yoichi Seto ,  Takuo Ishizuka

发明人： Masahiro Mimura ,  Yoichi Seto ,  Takuo Ishizuka

IPC分类号： G06K9/00

CPC分类号： G07F7/1008 ,  G06K9/00087 ,  G06Q20/341 ,  G06Q20/40145 ,  G07C9/00087 ,  G07C9/00119

摘要： A fingerprint identification system comprising: an IC card having a tamper-resistance; and a reader/writer having a tamper-resistance for reading/writing information from/into the IC card. In the reader/writer, a fingerprint image, as read by a fingerprint input unit, is preprocessed in a preprocessing unit, and extracted intermediate information is transmitted to the IC card. This IC card compares the intermediate information with the fingerprint information, and makes authentication information usable for an electronic authentication upon matching. By this electronic authentication with applications, the fingerprint identification system, which has a high level of safety and can reduce the cost is provided.

摘要翻译： 一种指纹识别系统，包括：具有防篡改性的IC卡; 以及具有用于从IC卡读取/写入信息的防篡改的读写器。 在读取器/写入器中，由指纹输入单元读取的指纹图像在预处理单元中被预处理，并且提取的中间信息被发送到IC卡。 该IC卡将中间信息与指纹信息进行比较，并且在匹配时使认证信息可用于电子认证。 通过这种应用的电子认证，提供了具有高安全性并可以降低成本的指纹识别系统。

公开(公告)号：US20070245155A1

公开(公告)日：2007-10-18

申请号：US11641762

申请日：2006-12-20

申请人： Masahiro Mimura ,  Kenta Takahashi

发明人： Masahiro Mimura ,  Kenta Takahashi

IPC分类号： H04L9/32

CPC分类号： G06Q20/4014 ,  G06F21/32

摘要： Secret information only a user can know is encrypted and a decryption key is stored in a biometric information sensor. The biometric information sensor has a secret information decryption unit, a secret information display unit for presenting the secret information to the user, a biometric information detection unit for detecting that biometric information is presented to a biometric information input unit, and an alarm notice unit for issuing an alarm to the user if the biometric information is detected before the secret information is presented.

摘要翻译： 只有用户可以知道的秘密信息被加密，并且解密密钥被存储在生物特征信息传感器中。 生物体信息传感器具有秘密信息解密单元，用于向用户呈现秘密信息的秘密信息显示单元，生物体信息检测单元，用于检测生物体信息被呈现给生物体信息输入单元;以及警报通知单元，用于 如果在提供秘密信息之前检测到生物特征信息，则向用户发出警报。

公开(公告)号：US5987075A

公开(公告)日：1999-11-16

申请号：US988209

申请日：1997-12-10

申请人： Katsuaki Abe ,  Takaaki Kishigami ,  Masahiro Mimura ,  Makoto Hasegawa ,  Katsushi Yokozaki ,  Yoichi Yamaki ,  Toshiyuki Tsumura ,  Hiroshi Katayama

发明人： Katsuaki Abe ,  Takaaki Kishigami ,  Masahiro Mimura ,  Makoto Hasegawa ,  Katsushi Yokozaki ,  Yoichi Yamaki ,  Toshiyuki Tsumura ,  Hiroshi Katayama

IPC分类号： H03G3/20 ,  H04L25/06 ,  H04L27/14

CPC分类号： H03G3/3068 ,  H04L25/061

摘要： An FSK signal receiver includes an amplifier which amplifies a first FSK signal at an adjustable gain. A frequency converter converts an output signal from the amplifier into a second FSK signal having a frequency lower than a frequency of the first FSK signal. A demodulator demodulates the second FSK signal into a baseband signal. A bit-state detector detects a bit state from the baseband signal in response to a threshold. A calculator calculates a number of times of occurrence of a fact that the baseband signal moves across the threshold during a given time. The gain of the amplifier is adjusted in response to the number of times which is calculated by the calculator.

摘要翻译： FSK信号接收机包括放大器，其以可调增益放大第一FSK信号。 变频器将来自放大器的输出信号转换成具有低于第一FSK信号的频率的频率的第二FSK信号。 解调器将第二FSK信号解调为基带信号。 位状态检测器响应于阈值从基带信号检测比特状态。 计算器计算在给定时间内基带信号在阈值上移动的事实的发生次数。 响应于由计算器计算的次数来调节放大器的增益。

公开(公告)号：US5984525A

公开(公告)日：1999-11-16

申请号：US49077

申请日：1998-03-27

申请人： Junichi Ikeda ,  Naoya Ito ,  Masahiro Mimura ,  Takeaki Tamabuchi

发明人： Junichi Ikeda ,  Naoya Ito ,  Masahiro Mimura ,  Takeaki Tamabuchi

IPC分类号： F04D29/04 ,  F04D29/051 ,  F04D29/06 ,  F16C17/02 ,  F16C17/22 ,  F16C33/04 ,  F16C33/08 ,  F16C33/10 ,  F16C17/10

CPC分类号： F04D29/051 ,  F04D29/063 ,  F16C17/02 ,  F16C17/22 ,  F16C33/04 ,  F16C33/08 ,  F16C33/103 ,  Y10S384/906

摘要： The present invention relates to an oil-retaining bearing for a rotary machine. In the oil-retaining bearing for a rotary machine according to the present invention, a first lock section is provided in a bearing housing; a first thrust spacer is relatively rotatably mounted in the vicinity of the end face of the oil-retaining bearing for a rotary machine; the first thrust spacer is provided with a second lock section, in engagement with the first lock section; a second thrust spacer is relatively non-rotatably mounted on the rotating shaft; and a third thrust spacer having elasticity is relatively rotatably mounted on the rotating shaft; the third thrust spacer being interposed between the first thrust spacer and the second thrust spacer. Furthermore, in the oil-retaining bearing structure for a rotary machine according to the present invention, a small hole is provided in the bearing housing through which the rotating shaft is mounted; at least one axial groove is formed in the inner surface of the bearing housing; and at least one radial groove is formed in the inner surface of the bearing housing; the axial groove being connected with the small hole section through the radial groove.

摘要翻译： 本发明涉及旋转机械的保油轴承。 在本发明的旋转机械的保油轴承中，在轴承座上设有第一锁定部， 第一止推垫片相对旋转地安装在用于旋转机器的保油轴承的端面附近; 第一推力间隔件设置有与第一锁定部分接合的第二锁定部分; 第二推力间隔件相对不可旋转地安装在旋转轴上; 并且具有弹性的第三推力间隔件相对可旋转地安装在旋转轴上; 第三推力间隔件插入在第一推力间隔件和第二推力间隔件之间。 此外，在本发明的旋转机械的保油轴承结构体中，在轴承壳体上设置有小孔，旋转轴通过该小孔安装; 在轴承壳体的内表面上形成至少一个轴向槽; 并且在轴承壳体的内表面中形成至少一个径向槽; 轴向槽通过径向槽与小孔部分连接。

公开(公告)号：US5894499A

公开(公告)日：1999-04-13

申请号：US796911

申请日：1997-02-06

申请人： Hiroshi Katayama ,  Yasumi Imagawa ,  Masahiro Mimura

发明人： Hiroshi Katayama ,  Yasumi Imagawa ,  Masahiro Mimura

IPC分类号： H04L27/148 ,  H04B1/16 ,  H04B7/26 ,  H04L27/00 ,  H04L27/14 ,  H04L27/227 ,  H04Q7/14

CPC分类号： H04L27/2273 ,  H04L2027/0057

摘要： A direct conversion receiver has: an I-low-pass filter 9 which has cut-off frequency switching device, switches over the cut-off frequency in accordance with the transmission rate, and eliminates high-frequency components from a modulated signal mixed with a first local signal; a Q-low-pass filter 10 which eliminates high-frequency components from a modulated signal mixed with the first local signal phase-shifted by 90 degrees; transmission rate detecting device 13 for detecting transmission rate information from transmission data detected by transmission data detecting device 12; and I- and Q-low-pass filter cut-off frequency controlling device 15 and 16 for generating I- and Q-control signals which control the cut-off frequency switching device, from the detected transmission rate. The cut-off frequencies of the low-pass filters are switched over in accordance with the transmission rate of reception.

摘要翻译： 直接转换接收机具有：具有截止频率切换装置的I低通滤波器9，根据传输速率切换截止频率，并且从混合有调制信号的调制信号中消除高频分量 第一个本地信号; Q-低通滤波器10，其从与第一本地信号相移90度混合的调制信号中消除高频分量; 传输速率检测装置13，用于从由传输数据检测装置12检测的传输数据检测传输速率信息; 以及用于从检测到的传输速率产生控制截止频率切换装置的I和Q控制信号的I和Q-低通滤波器截止频率控制装置15和16。 根据接收的传输速率切换低通滤波器的截止频率。

公开(公告)号：US5844632A

公开(公告)日：1998-12-01

申请号：US44956

申请日：1998-03-20

申请人： Takaaki Kishigami ,  Masahiro Mimura ,  Makoto Hasegawa ,  Tadaaki Ushiyama ,  Masahiko Nakamura ,  Yoshinori Takagi

发明人： Takaaki Kishigami ,  Masahiro Mimura ,  Makoto Hasegawa ,  Tadaaki Ushiyama ,  Masahiko Nakamura ,  Yoshinori Takagi

IPC分类号： H04B7/08 ,  H04N5/44 ,  H04N21/414 ,  H04N21/426 ,  H04N21/438 ,  H04N21/442

CPC分类号： H04N5/44 ,  H04B7/0811 ,  H04N21/41422 ,  H04N21/4263 ,  H04N21/4383 ,  H04N21/44209

摘要： In a first diversity receiving apparatus, during an antenna selection operation, one of antennas are selected such that each of antennas successively connected to a receiver for consecutive horizontal retrace periods but for horizontal scanning periods following the horizontal retrace period, the selected antenna showing a largest level at the previous antenna selection operation is connected to the receiver to detect levels derived from respective antennas. The antenna showing a largest level is selected at the current antenna selection operation to receive a radio wave television signal for the following M (a natural number) horizontal scanning cycles. M is changed in accordance with the phasing condition. For example, M is changed according to a speed of vehicle, a field intensity, a frequency of the received television signal, etc. The switching circuit and tuner may be provided doubly to prevent the affection of switching noise. A second apparatus determines the selected antenna by further detecting noise levels derived from the respective antennas during a vertical retrace period. A frequency of switching of antennas for determining the selected antenna is reduced to reduce a switching noise on the reproduced image or in the reproduced sound.

公开(公告)号：US5640428A

公开(公告)日：1997-06-17

申请号：US555407

申请日：1995-11-09

申请人： Katsuaki Abe ,  Masahiro Mimura ,  Makoto Hasegawa ,  Kazunori Watanabe ,  Katsushi Yokozaki

发明人： Katsuaki Abe ,  Masahiro Mimura ,  Makoto Hasegawa ,  Kazunori Watanabe ,  Katsushi Yokozaki

IPC分类号： H04L27/152 ,  H03D3/00 ,  H04L27/14

CPC分类号： H04L27/1525

摘要： In a first direct conversion receiver for demodulating I and Q signals, having a quadrature relation therebetween, obtained from a received FSK signal through a direct conversion, a first D FF latches a level of the I signal when a sign condition of I and Q signals moves from the same to different sign conditions, a second D FF latches a level of the Q signal when the sign condition of the I and Q signals moves from the different to same sign condition and EXCLUSIVE OR operations are made among the I and Q signals and the outputs of the first and second D FFs to provide a frequent data judgement to improve a receiving sensitivity of an FSK signal having a relative low modulation index. In a second direct conversion receiver, a sign change in the Q signal is detected by a first edge detection circuit 17, a first D FF holds the level of the I signal, and an EXCLUSIVE OR circuit provides a first demodulation result. A sign change in the I signal is detected by a second edge detection circuit 17, a second D FF holds the level of the Q signal, an EXCLUSIVE OR circuit provides a second demodulation result and a subtracting circuit combines the first and second demodulation results. An earlier change detection circuit also combines the first and second demodulation results with a delay in the first and second demodulation results reduced.

摘要翻译： 在用于通过直接转换从接收的FSK信号获得的具有正交关系的用于解调I和Q信号的第一直接转换接收机中，当I和Q信号的符号条件时，第一D FF锁存I信号的电平 从相同状态移动到不同的符号状态，当I和Q信号的符号条件从不同的符号状态移动到相同的符号条件时，第二D FF锁存Q信号的电平，并且在I和Q信号之间进行EXCLUSIVE OR运算 以及第一和第二D FF的输出以提供频繁的数据判断，以提高具有相对较低调制指数的FSK信号的接收灵敏度。 在第二直接变换接收机中，Q信号的符号改变由第一边缘检测电路17检测，第一D FF保持I信号的电平，并且EXCLUSIVE OR电路提供第一解调结果。 I信号的符号变化由第二边缘检测电路17检测，第二D FF保持Q信号的电平，EXCLUSIVE OR电路提供第二解调结果，减法电路组合第一和第二解调结果。 较早的改变检测电路还将第一和第二解调结果与减少的第一和第二解调结果中的延迟相结合。

公开(公告)号：US5633898A

公开(公告)日：1997-05-27

申请号：US360648

申请日：1994-12-21

申请人： Takaaki Kishigami ,  Katsuaki Abe ,  Masahiro Mimura ,  Makoto Hasegawa ,  Katsushi Yokozaki

发明人： Takaaki Kishigami ,  Katsuaki Abe ,  Masahiro Mimura ,  Makoto Hasegawa ,  Katsushi Yokozaki

IPC分类号： H04L27/152 ,  H04L27/14 ,  H03D3/18 ,  H04L27/06 ,  H04L27/10

CPC分类号： H04L27/1525

摘要： A first AFC apparatus receives and detects I and Q signals from a received first FSK signal with a local osc signal; demodulates the I and Q signals; F/V-converts I or/and Q signals into a voltage; compares it with a reference; and detects a frequency deviation direction of the local osc signal from the carrier signal according to the results of comparing and the demodulating. The local osc frequency is controlled by a given amount according to the result of the frequency deviation direction detection. A second AFC apparatus receives and detects I and Q signals using a first osc signal; FSK-modulates the I and Q signals with a second local osc signal having a lower frequency than the first local osc signal; and compares the frequency of the second FSK signal and the second local osc signal to supply a demodulation result. A frequency control for the first local osc signal is obtained by an averaging circuit averaging the modulation result. The F/V converter used in this apparatus has various modification and amplitude limiter may be provided as necessary. The averaging may be effected for a given data period of the first FSK signal. Power consumption can be reduced by selectively supplying a power with/without a holing circuit. FSK receivers use these automatic frequency control apparatus are also disclosed.

摘要翻译： 第一AFC设备接收并检测来自接收到的具有本地osc信​​号的第一FSK信号的I和Q信号; 解调I和Q信号; 将I /或Q信号F / V转换为电压; 将其与参考进行比较; 并且根据比较结果和解调来检测来自载波信号的本地振荡信号的频率偏差方向。 根据频偏方向检测的结果，本地振荡频率由给定量控制。 第二AFC设备使用第一osc信号接收和检测I和Q信号; FSK调制具有比第一本地osc信​​号低的频率的第二本地振荡信号的I和Q信号; 并且比较第二FSK信号和第二本地osc信​​号的频率以提供解调结果。 通过对调制结果进行平均的平均电路来获得第一局部振荡信号的频率控制。 该装置中使用的F / V转换器具有各种修改，并且可以根据需要提供幅度限制器。 对于第一FSK信号的给定数据周期可以进行平均。 通过有选择地提供带有/不带有孔的电路的电力可以降低功耗。 FSK接收机使用这些自动频率控制装置也被公开。