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    • 3. 发明授权
    • Method and apparatus for data transmission with control over access to a transmission medium
    • 用于通过对传输介质的访问进行控制的数据传输的方法和装置
    • US06625162B2
    • 2003-09-23
    • US09208404
    • 1998-12-10
    • Toshihiko MyojoTetsuo KandaKazuo Moritomo
    • Toshihiko MyojoTetsuo KandaKazuo Moritomo
    • H04L12413
    • H04W74/0816
    • In a communication system including plural communication apparatuses that communicate each other using a single communication path, the state of the communication path is detected for communication. If the communication path is busy, a first control method is performed for controlling access to the communication path using a back off time selected at random. A second control method secures the communication path by transmitting and receiving the predetermined signal at transmission of a signal so as to control access to the communication path. In accordance with the kind of the signal to be transmitted, the first or the second control method is selected for communication. Thus, plural communication apparatuses can perform efficient communication.
    • 在包括使用单个通信路径相互通信的多个通信装置的通信系统中,检测通信路径的状态进行通信。 如果通信路径正忙,则执行第一控制方法,以便使用随机选择的退出时间控制对通信路径的访问。 第二控制方法通过在发送信号时发送和接收预定信号来确保通信路径,以便控制对通信路径的访问。 根据要发送的信号的种类,选择第一或第二控制方法进行通信。 因此,多个通信装置能够进行有效的通信。
    • 4. 发明授权
    • Optical transmission apparatus and bidirectional optical space transmission system using the same
    • 光传输装置和双向光空间传输系统采用相同的方式
    • US06616352B1
    • 2003-09-09
    • US09586883
    • 2000-06-05
    • Junji ShigetaToshihiko MyojoYasuhiro TakahashiKazuo Moritomo
    • Junji ShigetaToshihiko MyojoYasuhiro TakahashiKazuo Moritomo
    • H04B1000
    • H04B10/1125
    • A bidirectional optical space transmission system is made up of a pair of optical transmission apparatus. Each optical transmission apparatus comprises a signal generating circuit for generating a pilot signal, a multiplexing section for multiplexing the pilot signal and a main signal to be transmitted, an electrooptic converter section for emitting an optical signal on the basis of the signal produced by the multiplexing process, a light receiving element for receiving an optical signal transmitted from the partner optical transmission apparatus and detecting a pilot signal contained therein, and a demodulation circuit for demodulating the pilot signal detected by the light receiving element. Pilot signals multiplexed with main signals to be transmitted through the bidirectional optical transmission system are subjected to spreading modulation and demodulated for spreading by the demodulation circuit.
    • 双向光学空间传输系统由一对光传输装置组成。 每个光传输装置包括用于产生导频信号的信号发生电路,用于复用导频信号的复用部分和要传输的主信号,基于由多路复用产生的信号发射光信号的电光转换器部分 处理光接收元件,用于接收从伙伴光传输装置发送的光信号并检测其中包含的导频信号;以及解调电路,用于解调由光接收元件检测的导频信号。 对通过双向光传输系统发送的主信号进行多路复用的导频信号经过扩展调制,并由解调电路进行解调以进行扩频。
    • 7. 发明授权
    • Allocation of a secondary band to expand the capacity of a primary band in a WLAN 802.11 system
    • 分配辅助频带以扩展WLAN 802.11系统中主频带的容量
    • US08493886B2
    • 2013-07-23
    • US12529702
    • 2008-05-16
    • Kazuo Moritomo
    • Kazuo Moritomo
    • H04L12/28H04W4/00
    • H04W72/02H04W84/18
    • If frequency band (channel) expansion is made without careful consideration, communications of other apparatuses are disturbed. An apparatus which belongs to an identical network before expansion of the frequency band may no longer be able to make a communication after expansion of the frequency band. To accomplish this, upon making communications using a plurality of channels, a communication apparatus of a network probes the presence of other networks, requests other communication apparatuses of the network to make communication using the plurality of channels based on the probe result, and makes communication using the plurality of channels based on responses to the request. Upon making communications using neighboring channels, the communication apparatus probes the presence of networks in neighboring channels and channels that neighbor the neighboring channels, and makes communications using a used channel and the neighboring channel.
    • 如果在不仔细考虑的情况下进行频带(频道)扩展,则其它装置的通信被干扰。 在频带扩展之前属于相同网络的装置在频带扩展之后可能不能进行通信。 为了实现这一点,在使用多个信道进行通信时,网络的通信装置探测其他网络的存在,请求网络的其他通信装置基于探测结果进行使用多个信道的通信,并进行通信 基于对请求的响应来使用多个信道。 在使用相邻信道进行通信时,通信装置探测相邻信道中存在的相邻信道中的网络,并且使用所使用的信道和相邻信道进行通信。
    • 10. 发明申请
    • ALLOCATION OF A SECONDARY BAND TO EXPAND THE CAPACITY OF A PRIMARY BAND IN A WLAN 802.11 SYSTEM
    • 分配一个第二条带来扩展WLAN 802.11系统中主带的容量
    • US20100061325A1
    • 2010-03-11
    • US12529702
    • 2008-05-16
    • Kazuo Moritomo
    • Kazuo Moritomo
    • H04W72/02H04W84/18
    • H04W72/02H04W84/18
    • If frequency band (channel) expansion is made without careful consideration, communications of other apparatuses are disturbed. An apparatus which belongs to an identical network before expansion of the frequency band may no longer be able to make a communication after expansion of the frequency band. To accomplish this, upon making communications using a plurality of channels, a communication apparatus of a network probes the presence of other networks, requests other communication apparatuses of the network to make communication using the plurality of channels based on the probe result, and makes communication using the plurality of channels based on responses to the request. Upon making communications using neighboring channels, the communication apparatus probes the presence of networks in neighboring channels and channels that neighbor the neighboring channels, and makes communications using a used channel and the neighboring channel.
    • 如果在不仔细考虑的情况下进行频带(频道)扩展,则其它装置的通信被干扰。 在频带扩展之前属于相同网络的装置在频带扩展之后可能不能进行通信。 为了实现这一点,在使用多个信道进行通信时,网络的通信装置探测其他网络的存在,请求网络的其他通信装置基于探测结果进行使用多个信道的通信,并进行通信 基于对请求的响应来使用多个信道。 在使用相邻信道进行通信时,通信装置探测相邻信道中存在的相邻信道中的网络,并且使用所使用的信道和相邻信道进行通信。