公开(公告)号：US20100002659A1

公开(公告)日：2010-01-07

申请号：US12096327

申请日：2006-12-07

申请人： Hiroshi Doi ,  Masahiro Mimura ,  Taisuke Matsumoto

发明人： Hiroshi Doi ,  Masahiro Mimura ,  Taisuke Matsumoto

IPC分类号： H04W4/00

CPC分类号： H04B7/2696 ,  H04W52/0229 ,  H04W56/002 ,  H04W84/18 ,  Y02D70/144 ,  Y02D70/22 ,  Y02D70/449

摘要： A wireless communication method wherein the power consumption can be reduced as compared with the conventional one and a wireless communication apparatus can synchronize its super-frame with the super-frame of another wireless communication apparatus in an ad hoc network. According to this method, in the ad hoc network where a plurality of wireless communication apparatuses use broadband signals to data-communicate with each other, a wireless communication apparatus transmits an end tone (201) for identifying the end of a super-frame (221), and when another wireless communication apparatus receives the end tone (202), it synchronizes the end of its super-frame (221) with the end of the foregoing super-frame (221). In this way, the super-frames (221) can be synchronized even without any beacons.

摘要翻译： 一种无线通信方法，其中与现有技术相比能够降低功耗，并且无线通信装置可以使其超帧与自组织网络中的另一无线通信装置的超帧同步。 根据该方法，在多个无线通信装置使用宽带信号进行数据通信的自组织网络中，无线通信装置发送用于识别超帧结束的终端音（201） ），并且当另一无线通信装置接收到终端音（202）时，它将其超帧（221）的结束与前述超帧（221）的结尾同步。 以这种方式，即使没有任何信标，超帧（221）也可以被同步。

公开(公告)号：US20090232057A1

公开(公告)日：2009-09-17

申请号：US12472869

申请日：2009-05-27

申请人： Hiroshi Doi ,  Masahiro Mimura ,  Taisuke Matsumoto

发明人： Hiroshi Doi ,  Masahiro Mimura ,  Taisuke Matsumoto

IPC分类号： H04W40/00

CPC分类号： H04W48/12 ,  H04W28/06 ,  Y02D70/142

摘要： A beacon slot position control section of a radio communication apparatus constituting a radio network system which detects whether empty beacon slots are present in a beacon period. When an empty beacon slot is present before the period in which the radio communication apparatus transmits a beacon, a movable counter starts counting a specified number of super frames. When the count is completed, the radio communication apparatus transmits a beacon of the radio communication apparatus at the earlier empty beacon slot. Consequently, since the empty beacon slots are eliminated and the beacon period is compacted, even if the number of radio communication apparatuses joining the radio network system fluctuates dynamically, the radio communication apparatus can perform radio communication with high efficiency and less waste of consumed electricity.

摘要翻译： 构成无线电网络系统的无线电通信装置的信标时隙位置控制部分，其检测信标周期中是否存在空信标时隙。 当在无线通信装置发送信标的期间之前存在空信标时隙时，可移动计数器开始计数指定数量的超帧。 当计数完成时，无线通信装置在较早的空信标时隙发送无线通信装置的信标。 因此，由于空信标时隙被消除并且信标周期被压缩，即使加入无线电网络系统的无线电通信装置的数量动态地波动，无线电通信装置可以以高效率和较少的消耗电力浪费进行无线电通信。

公开(公告)号：US20090074117A1

公开(公告)日：2009-03-19

申请号：US12281883

申请日：2007-03-01

申请人： Suguru Fujita ,  Masahiro Mimura ,  Kazuaki Takahashi ,  Takenori Sakamoto

发明人： Suguru Fujita ,  Masahiro Mimura ,  Kazuaki Takahashi ,  Takenori Sakamoto

IPC分类号： H04L27/06

CPC分类号： H04L27/2278 ,  H04B1/7183 ,  H04L25/03006 ,  H04L2027/0038

摘要： A pulse radio receiver not needing re-setting of the threshold for reception synchronization, judging the direction and amount of adjustment of the synchronization even if the signal strength varies, and having a shortened pull-in time of the synchronization position. The receiver comprises a detect (104) for creating a detection signal (105), a synchronizing waveform generating section (160) for generating a reference waveform signal (111), a delay section (161) for generating delayed waveform signals by delaying the reference waveform signal (111) with different delay times, a correlation computing section (162) for parallel generating correlation value signals representing the correlation values between the detection signal (105), and the reference waveform signal (111) and its delayed reference waveform signals, a judging section (163) for generating a difference detection signal (141) representing the direction and amount of the phase error from the magnitude relation corresponding to the combination of the correlation values represented by the correlation value signals, and a synchronization control section (142) for generating a control signal (143) for controlling the phase of the reference waveform signal (111) according to the difference detection signal (141) and outputting the control signal (143) into the synchronizing waveform generating section (160).

摘要翻译： 脉冲无线电接收机不需要重新设置接收同步的阈值，即使信号强度变化，判断同步调整的方向和量，并且具有缩短的同步位置的吸入时间。 接收机包括用于产生检测信号（105）的检测（104），用于产生参考波形信号（111）的同步波形发生部分（160），用于通过延迟基准来产生延迟波形信号的延迟部分（161） 具有不同延迟时间的波形信号（111），用于并行产生表示检测信号（105）与参考波形信号（111）之间的相关值的相关值信号及其延迟的参考波形信号的相关运算部分（162） 用于根据由相关值信号表示的相关值的组合对应的幅度关系产生表示相位误差的方向和量的差异检测信号（141）的判断部分（163），以及同步控制部分 ），用于产生用于根据差值d控制参考波形信号（111）的相位的控制信号（143） 检测信号（141），并将控制信号（143）输出到同步波形生成部（160）中。

公开(公告)号：US20080178002A1

公开(公告)日：2008-07-24

申请号：US11867052

申请日：2007-10-04

申请人： Shinji Hirata ,  Kenta Takahashi ,  Masahiro Mimura

发明人： Shinji Hirata ,  Kenta Takahashi ,  Masahiro Mimura

IPC分类号： H04L9/32 ,  H04L9/00

CPC分类号： G06F21/32 ,  H04L9/3231 ,  H04L2209/805

摘要： The authentication server authenticated by a public key certificate at the time of authentication generates a difference parameter, transforms a template by the difference parameter to create a temporary registration template, and transmits the difference parameter to a tamper resistant device. The tamper resistant device generates a temporary parameter from the held transformation parameter and the difference parameter. A client terminal transforms feature using the temporary parameter, and generates temporarily-transformed feature. An authentication server receives the temporarily-transformed feature, and verifies whether the temporary registration template is in agreement with the temporarily-transformed feature.

摘要翻译： 在认证时通过公开密钥证书认证的认证服务器生成差异参数，通过差分参数转换模板以创建临时注册模板，并将差异参数发送到防篡改设备。 防篡改设备从保持的变换参数和差分参数生成临时参数。 客户终端使用临时参数转换特征，并生成临时转换的特征。 验证服务器接收临时转换的特征，并且验证临时注册模板是否与临时转换的特征一致。

公开(公告)号：US07366235B2

公开(公告)日：2008-04-29

申请号：US10855691

申请日：2004-05-27

申请人： Masahiro Mimura ,  Kazuaki Takahashi ,  Suguru Fujita

发明人： Masahiro Mimura ,  Kazuaki Takahashi ,  Suguru Fujita

IPC分类号： H03K9/04

CPC分类号： H04B1/71637 ,  H04B1/7183 ,  H04L25/4902

摘要： A demodulated signal is to be generated by use of a first detection signal detected a presence/absence of a signal according to a correlation between a reception signal PPM-modulated at a pulse interval of T and a pulse variation width of τ and the reception signal delayed with a time (T+τ), a second detection signal detected a presence/absence of a signal according to a correlation between the reception signal and the reception signal delayed with a time (T), and a third detection signal detected a presence/absence of a signal according to a correlation between the reception signal and the reception signal delayed with a time (T−τ). By thus combining a plurality of delayed detections, it is possible to obtain a UWB demodulating apparatus configured with a circuit suited for integrated circuit fabrication.

摘要翻译： 通过使用根据以T的脉冲间隔调制的接收信号PPM和τ的脉冲变化宽度与接收信号之间的相关性的检测信号的存在/不存在的第一检测信号来产生解调信号 延迟时间（T +τ），第二检测信号根据接收信号与以时间（T）延迟的接收信号之间的相关性检测信号的存在/不存在，并且第三检测信号检测到存在 /根据接收信号与以时间（T-τ）延迟的接收信号之间的相关性，不存在信号。 通过组合多个延迟的检测，可以获得配置有适于集成电路制造的电路的UWB解调装置。

公开(公告)号：US20070118758A1

公开(公告)日：2007-05-24

申请号：US11515276

申请日：2006-09-01

申请人： Kenta Takahashi ,  Masahiro Mimura

发明人： Kenta Takahashi ,  Masahiro Mimura

IPC分类号： H04K1/00

CPC分类号： G06F21/31 ,  G06F21/305 ,  G06F21/32 ,  G06F2221/2131 ,  G06F2221/2153

摘要： When biometric information is registered, master helper data is created from user's biometric information and is saved in an IC card. When a user is registered in an authentication server, a password is created and registered in the server, the master helper data is converted to create helper data corresponding to the password, and the helper data is saved in an authentication terminal. When a user is authenticated, the authentication terminal generates an authentication password from the helper data and newly acquired user's biometric information, sends the generated authentication password to the authentication server, and the authentication server compares the authentication password with a registration password to authenticate the user.

摘要翻译： 登记生物体信息时，根据用户的生物识别信息创建主辅助数据，并保存在IC卡中。 当用户在认证服务器中注册时，在服务器中创建并注册密码，主服务器数据被转换为创建与密码对应的帮助数据，帮助者数据保存在认证终端中。 当用户认证时，认证终端从辅助数据和新获取的用户生物信息生成认证密码，将认证密码发送给认证服务器，认证服务器将认证密码与注册密码进行比较，以认证用户 。

公开(公告)号：US20070087715A1

公开(公告)日：2007-04-19

申请号：US11566412

申请日：2006-12-04

申请人： Masahiro Mimura ,  Suguru Fujita ,  Kazuaki Takahashi

发明人： Masahiro Mimura ,  Suguru Fujita ,  Kazuaki Takahashi

IPC分类号： H04B1/40 ,  H04B1/06

CPC分类号： H04B1/7174 ,  H04B1/7172

摘要： An impulse waveform generating apparatus comprises an oscillator for generating a reference signal having a center frequency in a frequency band of an impulse to generate, a timing matching circuit for shifting a phase of the reference signal by 90 degrees, a frequency demultiplier for dividing a frequency of the phase shift signal and obtaining a timing signal having a frequency component having a frequency width of an impulse to generate, a memory storing a waveform shape table, a waveform forming section for forming a waveform in synchronism with the timing signal, according to information of a shape table having a predetermined waveform, a low-pass filter for obtaining an envelope signal from an output signal of the waveform forming section, and a waveform generating section for changing an amplitude of the reference signal according to a value of the envelope signal.

摘要翻译： 脉冲波形生成装置包括：振荡器，用于产生具有脉冲频带的中心频率的基准信号，生成用于使参考信号的相位偏移90度的定时匹配电路，用于分频频率的分频器 并获得具有产生脉冲频率的频率分量的定时信号，存储波形形状表的存储器，与定时信号同步地形成波形的波形形成部，根据信息 具有预定波形的形状表，用于从波形形成部分的输出信号获得包络信号的低通滤波器和用于根据包络信号的值改变参考信号的幅度的波形产生部分 。

公开(公告)号：US07164900B2

公开(公告)日：2007-01-16

申请号：US10841595

申请日：2004-05-07

申请人： Masahiro Mimura ,  Suguru Fujita ,  Kazuaki Takahashi

发明人： Masahiro Mimura ,  Suguru Fujita ,  Kazuaki Takahashi

IPC分类号： H04B1/26

CPC分类号： H04B1/7174 ,  H04B1/7172

摘要： An impulse waveform generating apparatus comprises an oscillator for generating a reference signal having a center frequency in a frequency band of an impulse to generate, a timing matching circuit for shifting a phase of the reference signal by 90 degrees, a frequency demuultiplier for dividing a frequency of the phase shift signal and obtaining a timing signal having a frequency component having a frequency width of an impulse to generate, a memory storing a waveform shape table, a waveform forming section for forming a waveform in synchronism with the timing signal, according to information of a shape table having a predetermined waveform, a low-pass filter for obtaining an envelope signal from an output signal of the waveform forming section, and a waveform generating section for changing an amplitude of the reference signal according to a value of the envelope signal.

摘要翻译： 脉冲波形生成装置包括：振荡器，用于产生具有脉冲频带中心频率的参考信号，产生用于将参考信号的相位偏移90度的定时匹配电路，用于分频频率的频率分配器 并获得具有产生脉冲频率的频率分量的定时信号，存储波形形状表的存储器，与定时信号同步地形成波形的波形形成部，根据信息 具有预定波形的形状表，用于从波形形成部分的输出信号获得包络信号的低通滤波器和用于根据包络信号的值改变参考信号的幅度的波形产生部分 。

公开(公告)号：US06747564B1

公开(公告)日：2004-06-08

申请号：US09604918

申请日：2000-06-28

申请人： Masahiro Mimura ,  Yoichi Seto ,  Yoshiaki Isobe ,  Masaji Aoki

发明人： Masahiro Mimura ,  Yoichi Seto ,  Yoshiaki Isobe ,  Masaji Aoki

IPC分类号： G08C1900

CPC分类号： G07C9/00087 ,  H04L63/0853 ,  H04L63/105 ,  H04L63/107

摘要： A security system wherein, when a staff enters a building, a smart card carried by the staff is verified, and staff information inclusive of a staff number and fingerprint information is read from the smart card and is stored temporarily in a temporary storage file. When the staff logs on to a terminal, the fingerprint of the staff is read by a fingerprint input device (LS) and verified with the fingerprint information of the temporary storage file for verification. When the staff leaves the building, the staff number is read from the smart card the staff carries, and the corresponding staff information is erased from the temporary storage file. Security of a security object inside a security zone can be improved.

摘要翻译： 一种安全系统，其中，当工作人员进入建筑物时，验证由工作人员携带的智能卡，并且从智能卡读取包括工作人员编号和指纹信息的工作人员信息，并临时存储在临时存储文件中。 当员工登录终端时，由指纹输入设备（LS）读取员工的指纹，并用临时存储文件的指纹信息进行验证。 当员工离开大楼时，从员工携带的智能卡读取员工人数，相应的员工信息从临时存储文件中删除。 可以提高安全区域内的安全对象的安全性。

公开(公告)号：US06648598B2

公开(公告)日：2003-11-18

申请号：US10075504

申请日：2002-02-14

申请人： Masahiro Mimura

发明人： Masahiro Mimura

IPC分类号： F04D2938

CPC分类号： F04D29/164 ,  F04D29/384 ,  F05D2240/307

摘要： An axial flow fan wherein an impeller having a plurality of blades is supported rotatably in the cylindrical cavity portion of a venturi case so that an outer peripheral edge of each of the blades faces to an inner peripheral surface of the cavity portion with a small air gap. The outer peripheral edge of the blade is increased in thickness gradually toward a discharge port side of the venturi case from a suction port side of the venturi case. An peripheral edge portion of the blade at a suction port side of the venturi case is bent in the circumferential direction from a negative pressure surface side of the blade, so that the edge is small in thickness. An outer peripheral edge portion of the blade at a discharge port side of the venturi case has a portion extending circumferentially from a positive pressure surface side of the blade.