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公开(公告)号：US20120099559A1
公开(公告)日：2012-04-26
申请号：US13337680
申请日：2011-12-27
IPC分类号： H04W72/08
摘要： A communication band is divided into: a beacon period in which every master station transmits a beacon packet in competition with one another; a guaranteed-band period (e.g., a TDMA period or an FDMA period) in which only a specific permitted station is allowed access; and a CSMA period in which every station is allowed access in competition with one another. Plural master stations exchange information of a communication band used in the guaranteed-band period with each other, and based on the respective information, a communication band available to the master station's own communications system in the guaranteed-band period is calculated.
摘要翻译： 通信频带被分为：每个主站彼此竞争地发送信标分组的信标周期; 仅允许访问特定允许站的保证带周期（例如，TDMA周期或FDMA周期）; 以及每个车站相互竞争的CSMA时段。 多个主站将保证带期间中使用的通信频带的信息彼此交换，并且基于相应的信息，计算在保证频带周期内对主站自己的通信系统可用的通信频带。
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公开(公告)号：US08107431B2
公开(公告)日：2012-01-31
申请号：US12007782
申请日：2008-01-15
IPC分类号： H04W4/00
摘要： A communication band is divided into: a beacon period in which every master station transmits a beacon packet in competition with one another; a guaranteed-band period (e.g., a TDMA period or an FDMA period) in which only a specific permitted station is allowed access; and a CSMA period in which every station is allowed access in competition with one another. Plural master stations exchange information of a communication band used in the guaranteed-band period with each other, and based on the respective information, a communication band available to the master station's own communications system in the guaranteed-band period is calculated.
摘要翻译： 通信频带被分为：每个主站彼此竞争地发送信标分组的信标周期; 仅允许访问特定允许站的保证带周期（例如，TDMA周期或FDMA周期）; 以及每个车站相互竞争的CSMA时段。 多个主站将保证带期间中使用的通信频带的信息彼此交换，并且基于相应的信息，计算在保证频带周期内对主站自己的通信系统可用的通信频带。
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公开(公告)号：US07916654B2
公开(公告)日：2011-03-29
申请号：US11637007
申请日：2006-12-12
申请人： Youhei Koide , Tohru Yasukawa , Shigeo Yoshida , Shinichiro Ohmi
发明人： Youhei Koide , Tohru Yasukawa , Shigeo Yoshida , Shinichiro Ohmi
CPC分类号： H04L1/20 , H04L1/0026
摘要： A communication terminal which modulates and demodulates a packet for transmission and reception based on a communication parameter for modulation and demodulation determined according to a communication-medium characteristic. The communication terminal includes: an extracting unit which extracts, during every occurrence of a predetermined cycle, information indicative of either one of transmission efficiency and reception quality of the packet as an information element; a calculating unit which calculates a difference between a first information element extracted by the extracting unit and a second information element previously extracted by the extracting unit; and detecting-scheme performance determining unit which determines, based on the difference between the first information element and the second information element whether a scheme of detecting the communication-medium characteristic is to be performed.
摘要翻译： 根据通信介质特性确定的用于调制和解调的通信参数，调制和解调用于发送和接收的分组的通信终端。 通信终端包括：提取单元，其在每次发生预定周期期间提取指示分组的传输效率和接收质量中的任一个的信息作为信息元素; 计算单元，计算由提取单元提取的第一信息元素与由提取单元先前提取的第二信息元素之间的差; 以及检测方案性能确定单元，其基于第一信息元素和第二信息元素之间的差来确定是否要执行检测通信介质特性的方案。
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公开(公告)号：US20100172369A1
公开(公告)日：2010-07-08
申请号：US12651101
申请日：2009-12-31
申请人： Shinichiro Ohmi
发明人： Shinichiro Ohmi
IPC分类号： H04L12/413
CPC分类号： H04L12/413 , H04B3/542 , H04B2203/5445 , H04L27/0006
摘要： A communication method of communicating among a plurality of communication apparatuses connected to a transmission channel and sharing a communication band is provided. The communication method includes: sequentially updating a slot ID with the lapse of time by a first communication apparatus; transmitting first data and a first access ID to the transmission channel by the first communication apparatus after the lapse of a first waiting time and when the slot ID is updated to a first slot ID corresponding to the first access ID; transmitting second data and a second slot ID to the transmission channel by a second communication apparatus after the lapse of a second waiting time longer than the first waiting time; and receiving the second slot ID by the first communication apparatus. In updating the slot ID, the slot ID is updated to a slot ID subsequent to the second slot ID.
摘要翻译： 提供了一种在连接到传输信道并共享通信频带的多个通信设备之间进行通信的通信方法。 通信方法包括：通过第一通信装置随时间间隔地更新时隙ID; 在经过第一等待时间之后由第一通信装置向第一传输信道发送第一数据和第一接入ID，以及当时隙ID被更新为对应于第一接入ID的第一时隙ID时; 在经过比第一等待时间长的第二等待时间之后，由第二通信设备将第二数据和第二时隙ID发送到传输信道; 以及由第一通信装置接收第二时隙ID。 在更新时隙ID时，槽ID被更新为第二时隙ID之后的时隙ID。
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公开(公告)号：US20100158038A1
公开(公告)日：2010-06-24
申请号：US12643672
申请日：2009-12-21
申请人： Shinichiro Ohmi
发明人： Shinichiro Ohmi
IPC分类号： H04L12/413 , H04B3/00
CPC分类号： H04L12/40136
摘要： A communication apparatus communicates with another communication apparatus connected to a transmission channel and sharing a communication band. The communication apparatus includes: a receiving unit that receives, through the transmission channel, data including time information based on a transmission time when a synchronous signal is transmitted to the transmission channel from a synchronous signal transmitting apparatus at a given cycle, the synchronous signal for synchronizing a plurality of communication apparatuses; a transmitting unit that transmits data to the transmission channel; and a transmission control unit that estimates a synchronous signal non-existing period in which there is no synchronous signal on the transmission channel on the basis of the time information received by the receiving unit and the given cycle, and controls the transmitting unit to transmit data within the estimated synchronous signal non-existing period.
摘要翻译： 通信装置与连接到传输信道并共享通信频带的另一通信装置进行通信。 通信装置包括：接收单元，通过传输信道，在给定周期从基于同步信号发送装置的同步信号发送到发送信道的基础上，接收包含时间信息的数据，同步信号 同步多个通信设备; 发送单元，向发送信道发送数据; 以及传输控制单元，其基于由接收单元接收的时间信息和给定的周期来估计在传输信道上不存在同步信号的同步信号不存在的周期，并且控制发送单元发送数据 在估计的同步信号内不存在时段。
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6.发明授权公开(公告)号：US07447746B2
公开(公告)日：2008-11-04
申请号：US10911673
申请日：2004-08-05
IPC分类号： G06F15/16
CPC分类号： H04W84/20
摘要： Terminal devices F and G store statistical information related to interference from an external communication system, and notify the stored statistical information to a master station E. The master station E determines the terminal device G as a candidate station for a master station capability handover destination based on collected statistical information. The master station E requests to hand over a master station capability to the terminal device G. If it is determined that the terminal device G accepts handover of the master station capability, the terminal device G starts to act as the master station.
摘要翻译： 终端设备F和G存储与来自外部通信系统的干扰有关的统计信息，并将存储的统计信息通知给主站E.主站E将终端设备G确定为主站能力切换目的地的候选站 收集统计资料。 主站E请求将主站能力切换到终端装置G.如果确定终端装置G接受主站能力的切换，则终端装置G开始充当主站。
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公开(公告)号：US20080069184A1
公开(公告)日：2008-03-20
申请号：US11976838
申请日：2007-10-29
申请人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
发明人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
IPC分类号： H04B1/707
摘要： A spreading code generating apparatus carries out M-sequence multiplication and zero value addition of generated orthogonal codes to obtain channel identification codes, and then carries out inverse Fourier transform of the channel identification codes to generate spreading codes and inverse spreading codes. A transmitting apparatus and a receiving apparatus store the spreading codes and the inverse spreading codes generated by the spreading code generating apparatus, respectively, and use a single code respectively selected from the stored codes to carry out spread spectrum communication. With the use of the spreading codes for spreading, the input signal is spread over a wide frequency band with uniform power on the frequency axis. Thus, transmission characteristics are improved, and multiplexing capacity is increased.
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公开(公告)号：US5617374A
公开(公告)日：1997-04-01
申请号：US489276
申请日：1995-06-09
申请人： Shinichiro Ohmi , Hitoshi Takai , Yoshio Urabe
发明人： Shinichiro Ohmi , Hitoshi Takai , Yoshio Urabe
CPC分类号： H04L7/0331
摘要： A time window detection portion 3a outputs a time window detection pulse from a time window signal generated in a time window generating portion 2a and a zero-cross detection pulse detected in a zero-cross detection portion 1a. First and second phase storage portions 4a and 5a store output phase values of a phase counter 22 for different times as first and second phase values, respectively. A center phase computing portion 6a computes a first center phase value from the first and second phase values and a center phase storage portion 7a stores the first center phase value of the last time as a second center phase value. An approximation detection portion 8a determines whether the first and second center phase values are approximate or not and outputs an approximation detection pulse when they approximate. A frequency determination portion 20 determines whether a data signal is included in the input signal or not on the basis of frequency of detection of the approximation detection pulse with respect to the zero-cross detection pulse computed in a frequency computing portion 17.
摘要翻译： 时间窗检测部分3a从在时间窗产生部分2a中产生的时间窗信号和在零交叉检测部分1a中检测的过零检测脉冲输出时间窗检测脉冲。 第一和第二相位存储部分4a和5a分别将相位计数器22的输出相位值分别作为第一和第二相位值。 中心相位计算部分6a根据第一和第二相位值计算第一中心相位值，并且中心相位存储部分7a将最后一次的第一中心相位值存储为第二中心相位值。 近似检测部分8a确定第一和第二中心相位值是否近似，并且当它们近似时输出近似检测脉冲。 频率确定部分20基于在频率计算部分17中计算的过零检测脉冲的检测频率来确定数据信号是否包括在输入信号中。
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9.发明授权公开(公告)号：US09285892B2
公开(公告)日：2016-03-15
申请号：US13473024
申请日：2012-05-16
申请人： Shinichiro Ohmi
发明人： Shinichiro Ohmi
IPC分类号： G06F3/03
CPC分类号： G06F3/0304 , G06F3/0308 , G06F2203/04101
摘要： A non-contact position sensing device includes a plurality of infrared LEDs provided in different positions and each being configured to transmit an infrared light ray, a photosensor configured to receive multiple ones of infrared light rays reflected by an object, and a control section configured to calculate a position of the object based on reflected light rays received by the photosensor. The control section switches between intensity position calculation to calculate the position of the object based on intensities of the reflected light rays and phase position calculation to cause intensities of the infrared light rays transmitted from the infrared LEDs to periodically change and calculate the position of the object based on phases of intensity changes of the reflected light rays.
摘要翻译： 非接触位置检测装置包括设置在不同位置的多个红外LED，并且各自被配置为透射红外光，被配置为接收被物体反射的多个红外光的光电传感器，以及控制部，被配置为 基于由光电传感器接收的反射光线计算物体的位置。 控制部分在强度位置计算之间切换，以基于反射光线的强度和相位位置计算来计算物体的位置，以使得从红外LED发射的红外线的强度周期性地改变并计算物体的位置 基于反射光线的强度变化的相位。
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公开(公告)号：US08934345B2
公开(公告)日：2015-01-13
申请号：US13330849
申请日：2011-12-20
申请人： Pek Yew Tan , Wei Lih Lim , Shinichiro Ohmi , Yasuo Harada
发明人： Pek Yew Tan , Wei Lih Lim , Shinichiro Ohmi , Yasuo Harada
IPC分类号： H04L1/00 , H04L12/26 , H04W74/02 , H04L12/54 , H04L12/801 , H04L12/851 , H04L12/911 , H04L12/927 , H04W72/12 , H04W28/20
CPC分类号： H04W74/02 , H04L47/15 , H04L47/24 , H04L47/70 , H04L47/788 , H04L47/801 , H04L47/824 , H04W28/20 , H04W72/1236
摘要： A station includes a reservation request transmitter, a bandwidth request transmitter, and a data transmitter. The reservation request transmitter transmits a reservation request to an access point during a contention slot specified by the access point. The contention slot is periodically allocated by the access point. The bandwidth request transmitter transmits a bandwidth request to the access point using a first allocated bandwidth allocated to the station as a response to the reservation request. The bandwidth request has a first data structure different from a second data structure of the reservation request, and includes information indicating a required bandwidth for transmitting a data to be transmitted. The data transmitter transmits the data using a second allocated bandwidth allocated to the station based on the required bandwidth.
摘要翻译： 站包括预约请求发射机，带宽请求发射机和数据发射机。 预约请求发送者在由接入点指定的争用时隙期间向接入点发送预约请求。 争用时隙由接入点周期性地分配。 带宽请求发送器使用分配给站的第一分配带宽作为对该预约请求的响应，向接入点发送带宽请求。 带宽请求具有与预留请求的第二数据结构不同的第一数据结构，并且包括指示要发送的数据的所需带宽的信息。 数据发射机使用基于所需带宽分配给站的第二分配带宽来发送数据。
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