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121 条记录 (耗时 0.032 秒)

    Wireless communication system, fixed base station and mobile terminal station
    3.
    发明授权
    Wireless communication system, fixed base station and mobile terminal station 有权
    无线通信系统，固定基站和移动终端站

    公开(公告)号：US06909893B2

    公开(公告)日：2005-06-21

    申请号：US09804475

    申请日：2001-03-13

    申请人： Yutaka Aoki ,  Minoru Okada ,  Masayuki Fujise ,  Hiroshi Harada

    发明人： Yutaka Aoki ,  Minoru Okada ,  Masayuki Fujise ,  Hiroshi Harada

    IPC分类号： H04W16/32 ,  H04Q7/20

    CPC分类号： H04W16/32

    摘要： A radio communication system between a mobile terminal station of a vehicle and a plurality of roadside fixed base stations is so constructed that communication areas of the base stations do not overlap with each other and satisfy the following two conditions. Condition (i): each communication area is defined so that there cannot be a plurality of terminal stations simultaneously. Condition (ii): it is needless to perform multiple access such as time division in the communication area and capable of affording the whole band and all the communication time allocated to one communication area to one terminal station and broad band communication becomes possible. Thus, each mobile terminal station can utilize all the frequency band allocated for service.

    摘要翻译： 在车辆的移动终端站与多个路侧固定基站之间的无线电通信系统被构造成使得基站的通信区域彼此不重叠并且满足以下两个条件。 条件（i）：每个通信区域被定义为不能同时存在多个终端站。 条件（ii）：不需要在通信区域中执行诸如时分的多路访问，并且能够提供整个频带以及分配给一个通信区域的所有通信时间到一个终端站，并且可以进行宽带通信。 因此，每个移动终端可以利用分配用于服务的所有频带。

    Radio communication system using variable packet length
    4.
    发明授权
    Radio communication system using variable packet length 有权
    无线电通信系统使用可变包长度

    公开(公告)号：US06788951B2

    公开(公告)日：2004-09-07

    申请号：US09840988

    申请日：2001-04-25

    申请人： Yutaka Aoki ,  Minoru Okada

    发明人： Yutaka Aoki ,  Minoru Okada

    IPC分类号： H04Q720

    CPC分类号： H04W28/06 ,  H04L1/0007 ,  H04W24/00 ,  H04W64/006 ,  H04W88/08

    摘要： A radio communication system performs radio communication between a terminal station installed on a vehicle and a plurality of base stations provided along a roadside. The system detects a vehicle traveling speed in each communication area formed by each base station. The vehicle traveling speed is detected by a method which uses radio communication between the terminal station and the base stations. The time of the vehicle stay in the communication area is estimated based on the detected vehicle traveling speed, and the length of a packet is determined based on the estimated time of the vehicle stay in the communication area. In this way, the present system performs data transmission using a packet of an appropriate length according to the detected vehicle traveling speed.

    摘要翻译： 无线电通信系统在安装在车辆的终端站和沿着路边设置的多个基站之间执行无线电通信。 该系统检测由各基站形成的各通信区域内的车辆行驶速度。 通过使用终端站与基站之间的无线通信的方法来检测车辆行驶速度。 基于检测到的车辆行驶速度来估计车辆停留在通信区域中的时间，并且基于车辆停留在通信区域中的估计时间来确定分组的长度。 以这种方式，本系统根据检测到的车辆行驶速度，使用适当长度的分组进行数据传输。

    Acceleration control system
    6.
    发明授权
    Acceleration control system 有权
    加速控制系统

    公开(公告)号：US08131443B2

    公开(公告)日：2012-03-06

    申请号：US12214979

    申请日：2008-06-24

    申请人： Hiroshi Inou ,  Minoru Okada ,  Seiji Totsuka

    发明人： Hiroshi Inou ,  Minoru Okada ,  Seiji Totsuka

    IPC分类号： B60K31/00

    CPC分类号： B60K31/00 ,  B60W30/14 ,  B60W2050/0057

    摘要： An acceleration control system controls acceleration of a vehicle to match the driver's feeling. In this control, the vehicle is controlled so that acceleration remains constant at the initial stage and then a differentiated value of a square power of a vehicle speed remains constant. This control is based on the finding of a normal acceleration operation attained by a driver. A linear relation exists between the acceleration in the initial stage of acceleration and the differentiated value of the square power of the speed. Switching of control from the constant acceleration to the constant differentiated value of the square power of the speed is made at a change-over speed determined by the linear relation.

    摘要翻译： 加速控制系统控制车辆的加速度以匹配驾驶员的感觉。 在该控制中，控制车辆使得加速度在初始阶段保持恒定，然后车速的平方功率的微分值保持恒定。 该控制基于驾驶员获得的正常加速操作的发现。 加速初始加速度与速度平方功率的微分值之间存在线性关系。 在由线性关系确定的转换速度下，将控制从恒定加速度切换到速度的平方功率的恒定微分值。

    Method of suppressing carrier leak in OFDM transmission and radio transmitter using same method
    7.
    发明申请
    Method of suppressing carrier leak in OFDM transmission and radio transmitter using same method 审中-公开
    使用相同的方法抑制OFDM传输和无线电发射机中的载波泄漏的方法

    公开(公告)号：US20090213951A1

    公开(公告)日：2009-08-27

    申请号：US12320156

    申请日：2009-01-21

    申请人： Minoru Okada ,  Kenichi Koeda ,  Toshiyuki Morishita

    发明人： Minoru Okada ,  Kenichi Koeda ,  Toshiyuki Morishita

    IPC分类号： H04L27/28

    CPC分类号： H04L27/2626 ,  H04L2027/0016 ,  H04L2027/0018

    摘要： In an OFDM type radio transmitter, an orthogonal modulator performs an orthogonal modulation of an I-component and a Q-component, an orthogonal component output circuit produces the I-component and the Q-component in accordance with set values, and a correction circuit sets the I-component and the Q-component to zero. The correction circuit further corrects offset values of the I-component and the Q-component by way of the orthogonal component output circuit to minimize an output power of the orthogonal modulator. The number of times of changing the set values of the orthogonal component output circuit is limited to predetermined values in correcting the offset values.

    摘要翻译： 在OFDM型无线发射机中，正交调制器执行I分量和Q分量的正交调制，正交分量输出电路根据设定值产生I分量和Q分量，校正电路 将I分量和Q分量设置为零。 校正电路还通过正交分量输出电路来校正I分量和Q分量的偏移值，以使正交调制器的输出功率最小化。 在校正偏移值时，将正交分量输出电路的设定值变更的次数限制为规定值。

    Information storage apparatus and travel environment information recognition apparatus
    8.
    发明申请
    Information storage apparatus and travel environment information recognition apparatus 审中-公开
    信息存储装置和旅行环境信息识别装置

    公开(公告)号：US20090041358A1

    公开(公告)日：2009-02-12

    申请号：US12221931

    申请日：2008-08-07

    申请人： Hiromichi Tanaka ,  Minoru Okada

    发明人： Hiromichi Tanaka ,  Minoru Okada

    IPC分类号： G06K9/46

    CPC分类号： G01C21/32

    摘要： An information storage apparatus recognizes a traffic sign on a road expressed by a road surface image, and stores recognized traffic sign in association with its position information in a hard disk drive. By recognizing and storing information on the traffic sign in combination with the position information for the sake of traffic safety, information coverage in terms of traffic safety is updated to the most up-to-date condition for roads in the entire country.

    摘要翻译： 信息存储装置识别由路面图像表示的道路上的交通标志，并且将识别的交通标志与其位置信息相关联地存储在硬盘驱动器中。 为了交通安全，结合位置信息识别和存储交通信号信息，将交通安全方面的信息覆盖更新为全国道路的最新状态。