公开(公告)号：US20090052366A1

公开(公告)日：2009-02-26

申请号：US11815023

申请日：2006-01-27

申请人： Hiroshi Doi ,  Masahiro Mimura ,  Taisuke Matsumoto

发明人： Hiroshi Doi ,  Masahiro Mimura ,  Taisuke Matsumoto

IPC分类号： H04B7/14

CPC分类号： H04W40/02 ,  H04L45/20 ,  H04W8/26 ,  H04W40/00 ,  H04W48/08 ,  H04W84/18

摘要： A frame such as a beacon in wireless communication, with a maximum MAC address, hop count, and maximum hop count, described therein is exchanged between nodes. All the nodes measure the number of hops from a node with the maximum MAC address, and exchange the maximum hop count (hmax) out of the numbers with each other. Hop count H(a,b) between arbitrary nodes a and b is expressed by H(a,b)≦H(a,max)+H(max,b)≦2*hmax, where hmax is a hop count from node (max) with the maximum MAC address to the farthest node. That is, the number of hops between two arbitrary nodes in the group is always 2*hmax or less. Herewith, a numeric value assuredly exceeding the maximum value out of the numbers of hops between nodes in an ad-hoc network can be propagated in the entire ad-hoc network.

摘要翻译： 诸如无线通信中的信标的帧，其中描述的最大MAC地址，跳数和最大跳数在帧之间在节点之间交换。 所有节点测量具有最大MAC地址的节点的跳数，并将数字中的最大跳数（hmax）彼此交换。 任意节点a和b之间的跳数H（a，b）由H（a，b）<= H（a，max）+ H（max，b）<= 2 * hmax表示，其中hmax是跳数 从最大MAC地址到最远节点的节点（max）。 也就是说，组中两个任意节点之间的跳数总是为2 * hmax或更小。 因此，可以在整个ad-hoc网络中传播确定超过自组织网络中的节点之间的跳数的最大值的数值。

公开(公告)号：US07315728B2

公开(公告)日：2008-01-01

申请号：US10473592

申请日：2003-02-27

申请人： Masahiro Mimura ,  Yoichi Nakagawa ,  Kentaro Miyano ,  Yoshio Koyanagi

发明人： Masahiro Mimura ,  Yoichi Nakagawa ,  Kentaro Miyano ,  Yoshio Koyanagi

IPC分类号： H04B17/00

CPC分类号： H04B7/10 ,  G01R29/0892 ,  H04B7/0848 ,  H04B17/318

摘要： A phase shift section phase-shifts the second band-restricted signal to a first phase-shifted signal and a second phase-shifted signal having a phase that is different from the phase of the first phase-shifted signal by 90 degrees. A first signal mixing section mixes the first band-restricted signal and the first phase-shifted signal. A second signal mixing section mixes the second band-restricted signal and the second phase-shifted signal. A phase difference calculation section calculates the phase difference value from the first mixed signal and the second mixed signal stripped of frequencies other than a desired baseband frequency. A polarization calculation section calculates reception polarization from the first reception field intensity value, second reception field intensity value and phase difference value.

摘要翻译： 相移部分将第二频带限制信号相移到第一相移信号和具有与第一相移信号的相位不同的相位90度的第二相移信号。 第一信号混合部分混合第一带限信号和第一相移信号。 第二信号混合部分混合第二频带限制信号和第二相移信号。 相位差计算部分计算来自第一混合信号的相位差值和除了期望的基带频率之外的频率剥离的第二混合信号。 极化计算部根据第一接收场强强度值，第二接收场强度值和相位差值来计算接收极化。

公开(公告)号：US20070026880A1

公开(公告)日：2007-02-01

申请号：US10574736

申请日：2005-08-01

申请人： Hiroshi Doi ,  Masahiro Mimura ,  Taisuke Matsumoto

发明人： Hiroshi Doi ,  Masahiro Mimura ,  Taisuke Matsumoto

IPC分类号： H04B7/00 ,  H04B15/00

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

摘要： A beacon slot position control section (205) 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 (206) 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（205），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，移动计数器（206）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：US5986720A

公开(公告)日：1999-11-16

申请号：US845442

申请日：1997-04-25

申请人： Takaaki Kishigami ,  Masahiro Mimura ,  Makoto Hasegawa ,  Masahiko Nakamura ,  Yoshinori Takagi ,  Masanobu Kanaya

发明人： Takaaki Kishigami ,  Masahiro Mimura ,  Makoto Hasegawa ,  Masahiko Nakamura ,  Yoshinori Takagi ,  Masanobu Kanaya

IPC分类号： H04N5/21 ,  H04N5/44 ,  H04N21/414 ,  H04N21/442 ,  H04N5/455

CPC分类号： H04N5/44 ,  H04N21/41407 ,  H04N21/44209 ,  H04N5/21

摘要： A mobile television receiver includes a TV tuner demodulating an incoming TV signal into a first video signal. A first horizontal sync signal is separated from the first video signal. Detection is made as to a quality of an image represented by the first video signal. A second horizontal sync signal is generated. Detection is made as to a difference between a phase of the first horizontal sync signal and a phase of the second horizontal sync signal. The phase of the second horizontal sync signal is controlled in response to the detected phase difference between the first horizontal sync signal and the second horizontal sync signal so that the second horizontal sync signal will be locked in phase and frequency to the first horizontal sync signal. A memory unit stores the first video signal in response to a memory control signal, and outputs the stored first video signal as a second video signal. The memory control signal is generated in response to the detected image quality. The second video signal is displayed in response to the second horizontal sync signal.

摘要翻译： 移动电视接收机包括将输入的TV信号解调为第一视频信号的TV调谐器。 第一水平同步信号与第一视频信号分离。 对由第一视频信号表示的图像的质量进行检测。 产生第二水平同步信号。 检测第一水平同步信号的相位与第二水平同步信号的相位之差。 响应于第一水平同步信号和第二水平同步信号之间检测到的相位差来控制第二水平同步信号的相位，使得第二水平同步信号将以相位和频率锁定到第一水平同步信号。 存储单元响应于存储器控制信号存储第一视频信号，并将所存储的第一视频信号作为第二视频信号输出。 响应于检测到的图像质量而产生存储器控制信号。 响应于第二水平同步信号显示第二视频信号。

公开(公告)号：US5781588A

公开(公告)日：1998-07-14

申请号：US548373

申请日：1995-11-01

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.

公开(公告)号：US08081651B2

公开(公告)日：2011-12-20

申请号：US12561710

申请日：2009-09-17

申请人： Hiroshi Doi ,  Yoshinori Watanabe ,  Masahiro Mimura

发明人： Hiroshi Doi ,  Yoshinori Watanabe ,  Masahiro Mimura

IPC分类号： H04B7/12

CPC分类号： H04W74/0816 ,  H04W84/18

摘要： A radio communication device includes a communication data selection unit for selecting from the received radio communication data containing communication time reservation request information in which a time slot for performing data transmission source radio communication device is described and a communication information analysis unit for extracting an identifier of the source radio communication device and the data transmission reservation time slot from the communication time reservation request information in the radio communication data. When the received radio communication data is addressed to the local device, a communication/response information generation unit correlates the identifier to the reservation time slot, records them in a communication reservation table, and generates communication time reservation response information including information of the reservation time slot.

摘要翻译： 无线电通信装置包括：通信数据选择单元，用于从包含用于执行数据发送源无线电通信装置的时隙的​​通信时间预约请求信息的接收的无线电通信数据中选择，以及用于提取用于提取数据发送源无线电通信装置的标识符的通信信息分析单元 源无线电通信设备和数据传输预留时隙。 当接收到的无线电通信数据被寻址到本地设备时，通信/响应信息生成单元将该标识符与预留时隙相关联，将它们记录在通信预约表中，并产生包括预约时间的信息的通信时间预约响应信息 槽

公开(公告)号：US20110200234A1

公开(公告)日：2011-08-18

申请号：US13090577

申请日：2011-04-20

申请人： Kenta TAKAHASHI ,  Shinji Hirata ,  Hideitsu Hino ,  Masahiro Mimura

发明人： Kenta TAKAHASHI ,  Shinji Hirata ,  Hideitsu Hino ,  Masahiro Mimura

IPC分类号： G06K9/00

CPC分类号： G06K9/00885 ,  G06F21/32 ,  G06F2221/2107 ,  G06K2009/00953 ,  G07C9/00158 ,  G07C2209/12 ,  H04K1/00 ,  H04L9/3231 ,  H04L2209/805

摘要： A computer readable medium embodying a program to be executed by a terminal device used for a biometric authentication, the program including: an image generation code generating an enrolled image and a verification image from biometric information of a user collected at a sensor coupled to the terminal device; a filter generation code generating a random filter for scrambling the enrolled image and an inverse filter of the random filter; a transformation code transforming the enrolled image to a registration template by applying the random filter to the enrolled image and transforming the verification image to a filtered verification image by applying the inverse filter to the verification image; communication code transmitting the registration template and the filtered verification image to a biometric server thereby the biometric server performs biometric authentication of the user based on the cross-correlation between the registration template and the filtered verification image.

摘要翻译： 一种体现由用于生物认证的终端设备执行的程序的计算机可读介质，所述程序包括：生成注册图像的图像生成代码和来自耦合到所述终端的传感器收集的用户的生物特征信息的验证图像 设备; 生成随机滤波器的滤波器生成代码，用于对登记的图像进行加扰和随机滤波器的反相滤波器; 转换代码，通过将随机过滤器应用于登记图像，并通过对验证图像应用逆滤波器将验证图像变换为滤波后的验证图像，将注册的图像变换为注册模板; 通信代码将注册模板和过滤的验证图像发送到生物测定服务器，从而生物测定服务器基于注册模板和经滤波的验证图像之间的互相关来执行用户的生物体认证。

公开(公告)号：US20090307764A1

公开(公告)日：2009-12-10

申请号：US12293470

申请日：2007-03-23

申请人： Yoshiaki Isobe ,  Masahiro Mimura

发明人： Yoshiaki Isobe ,  Masahiro Mimura

IPC分类号： H04L9/32 ,  G06F21/20

CPC分类号： G06F21/32 ,  G06F21/51 ,  G06F21/577 ,  G06F2221/2101 ,  H04L9/3231

摘要： A biometric authentication device has a threat of an attack of pretending to be someone else by such as forgery. The present invention supports a service provider to appropriately decide the level of such threat.A vulnerability verification server 150 is provided in the system, and the vulnerability of each biometric product is centrally managed. A service provider 130 sends the information that specifies the device in which a client terminal 110 executes the biometric authentication to the vulnerability verification server 150, and receives the vulnerability information. The service provider 130 decides whether the service can be provided or not to the client terminal 110 using the vulnerability information that was received.

摘要翻译： 生物识别认证设备有伪装的假冒伪装的威胁。 本发明支持服务提供商适当地确定这种威胁的程度。 系统中提供了一个漏洞验证服务器150，并且集中管理每个生物特征产品的漏洞。 服务提供者130将指定客户终端110的设备的信息发送到漏洞验证服务器150，并接收该漏洞信息。 服务提供者130使用接收到的漏洞信息来判定是否可以向客户终端110提供服务。

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。