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1. 发明授权

US08705965B2 Method of recovery from sleep state of an ONU in a PON system capable of power saving 失效
标题翻译：从能够省电的PON系统中的ONU的睡眠状态恢复的方法
公开(公告)号：US08705965B2
公开(公告)日：2014-04-22
申请号：US12987753
申请日：2011-01-10
申请人： Jun Sugawa , Hiroki Ikeda , Tohru Kazawa
发明人： Jun Sugawa , Hiroki Ikeda , Tohru Kazawa
IPC分类号： H04J14/00
CPC分类号： H04Q11/0067 , H04Q2011/0064 , H04Q2011/0079
摘要： There is a need to recover an ONU from a sleep state for communication with the PON before a specified sleep cancel time in a short period of time without degrading the band use efficiency. An OLT manages an electric state of each ONU connected to a PON. When at least one ONU is in sleep mode, the OLT transmits a grant to allocate a band for a sleep cancel report to the ONU. When the sleep-mode ONU requires communication, the ONU transmits the sleep cancel report to the OLT using the band for the sleep cancel report. When receiving the sleep cancel report, the OLT changes the managed ONU to a normal state and resumes the communication with the PON.
摘要翻译：需要在短时间内在指定的睡眠取消时间之前，从睡眠状态恢复ONU以与PON进行通信，而不降低频带使用效率。 OLT管理连接到PON的每个ONU的电状态。当至少一个ONU处于睡眠模式时，OLT向ONU发送用于为睡眠取消报告分配频带的许可。当睡眠模式ONU需要通信时，ONU使用睡眠取消报告的频带向OLT发送睡眠取消报告。当接收到睡眠取消报告时，OLT将被管理的ONU改变为正常状态并恢复与PON的通信。

2. 发明申请

US20110211837A1 Method of Recovery From Sleep State of an Onu in a Pon System Capable of Power Saving 失效
标题翻译：从能够节能的Pon系统中的Onu睡眠状态恢复的方法
公开(公告)号：US20110211837A1
公开(公告)日：2011-09-01
申请号：US12987753
申请日：2011-01-10
申请人： Jun Sugawa , Hiroki Ikeda , Tohru Kazawa
发明人： Jun Sugawa , Hiroki Ikeda , Tohru Kazawa
IPC分类号： H04B10/24
CPC分类号： H04Q11/0067 , H04Q2011/0064 , H04Q2011/0079
摘要： There is a need to recover an ONU from a sleep state for communication with the PON before a specified sleep cancel time in a short period of time without degrading the band use efficiency. An OLT manages an electric state of each ONU connected to a PON. When at least one ONU is in sleep mode, the OLT transmits a grant to allocate a band for a sleep cancel report to the ONU. When the sleep-mode ONU requires communication, the ONU transmits the sleep cancel report to the OLT using the band for the sleep cancel report. When receiving the sleep cancel report, the OLT changes the managed ONU to a normal state and resumes the communication with the PON.
摘要翻译：需要在短时间内在指定的睡眠取消时间之前，从睡眠状态恢复ONU以与PON进行通信，而不降低频带使用效率。 OLT管理连接到PON的每个ONU的电状态。当至少一个ONU处于睡眠模式时，OLT向ONU发送用于为睡眠取消报告分配频带的许可。当睡眠模式ONU需要通信时，ONU使用睡眠取消报告的频带向OLT发送睡眠取消报告。当接收到睡眠取消报告时，OLT将被管理的ONU改变为正常状态并恢复与PON的通信。

3. 发明授权

US08861954B2 Burst-mode receiver equipped with optical amplifier, method for controlling optical amplifier, and system 有权
标题翻译：配有光放大器的突发模式接收机，光放大器控制方法及系统
公开(公告)号：US08861954B2
公开(公告)日：2014-10-14
申请号：US13336710
申请日：2011-12-23
申请人： Jun Sugawa , Hiroki Ikeda , Tohru Kazawa
发明人： Jun Sugawa , Hiroki Ikeda , Tohru Kazawa
IPC分类号： H04B17/00 , H04J14/06 , H04J4/00 , H04J14/00 , H04B10/272
CPC分类号： H04B10/272
摘要： To, even when a transmission wavelength varies in each ONU and an optical amplifier gain depends on the wavelength in an OLT equipped with an optical amplifier, prevent the optical amplifier gain from varying in every ONU and thus prevent deterioration of a dynamic range. The OLT estimates a transmission wavelength of each ONU at the time of ONU registration, and retains a correspondence between an ONU identifier and the transmission wavelength. Moreover, for every burst, an injection current to the optical amplifier is adjusted based on a wavelength and optical amplifier characteristic database.
摘要翻译：即使当每个ONU中的传输波长变化并且光放大器增益取决于配备有光放大器的OLT中的波长时，防止光放大器增益在每个ONU中变化，从而防止动态范围的恶化。 OLT估计在ONU注册时每个ONU的传输波长，并保持ONU标识符与传输波长之间的对应关系。此外，对于每个脉冲串，基于波长和光放大器特性数据库调整到光放大器的注入电流。

4. 发明申请

US20120163809A1 Burst-Mode Receiver Equipped with Optical Amplifier, Method for Controlling Optical Amplifier, and System 有权
标题翻译：配有光放大器的突发模式接收机，控制光放大器和系统的方法
公开(公告)号：US20120163809A1
公开(公告)日：2012-06-28
申请号：US13336710
申请日：2011-12-23
申请人： Jun Sugawa , Hiroki Ikeda , Tohru Kazawa
发明人： Jun Sugawa , Hiroki Ikeda , Tohru Kazawa
IPC分类号： H04J14/02 , H04B10/08 , H04J14/06
CPC分类号： H04B10/272
摘要： To, even when a transmission wavelength varies in each ONU and an optical amplifier gain depends on the wavelength in an OLT equipped with an optical amplifier, prevent the optical amplifier gain from varying in every ONU and thus prevent deterioration of a dynamic range. The OLT estimates a transmission wavelength of each ONU at the time of ONU registration, and retains a correspondence between an ONU identifier and the transmission wavelength. Moreover, for every burst, an injection current to the optical amplifier is adjusted based on a wavelength and optical amplifier characteristic database.
摘要翻译：即使当每个ONU中的传输波长变化并且光放大器增益取决于配备有光放大器的OLT中的波长时，防止光放大器增益在每个ONU中变化，从而防止动态范围的恶化。 OLT估计在ONU注册时每个ONU的传输波长，并保持ONU标识符与传输波长之间的对应关系。此外，对于每个脉冲串，基于波长和光放大器特性数据库调整到光放大器的注入电流。

5. 发明申请

US20090169209A1 Network system, optical line terminating apparatus, and optical network apparatus 有权
标题翻译：网络系统，光线路终端装置和光网络装置
公开(公告)号：US20090169209A1
公开(公告)日：2009-07-02
申请号：US12073949
申请日：2008-03-12
申请人： Toshiki Sugawara , Hiroki Ikeda , Yusuke Yajima , Tohru Kazawa
发明人： Toshiki Sugawara , Hiroki Ikeda , Yusuke Yajima , Tohru Kazawa
IPC分类号： H04J14/00
CPC分类号： H04B10/27 , H04B10/272 , H04J3/0682
摘要： A general object of the present invention is to provide an optical communication system in which an optical transmission power of an optical communication apparatus is controlled to be a required minimum power that apparatuses of all subscribers in the optical communication system meet a prescribed error rate. An optical line terminating apparatus (OLT) transmits data to multiple optical network apparatuses (ONUs) at an optical intensity calculated based on information acquired from the multiple ONUs, which is related to optical intensities of signals that the multiple ONUs receive from the OLT, the optical intensity being calculated so that a minimum optical intensity of the optical intensities of the signals is greater than a predetermined value.
摘要翻译：本发明的一般目的是提供一种光通信系统，其中光通信装置的光传输功率被控制为光通信系统中所有用户的设备满足规定的错误率所需的最小功率。光线路终端装置（OLT）以基于从多个ONU获取的信息计算出的光强度向多个光网络装置（ONU）发送数据，其与多个ONU从OLT接收的信号的光强度相关，计算光强度，使得信号的光强度的最小光强度大于预定值。

6. 发明申请

US20100239255A1 OPTICAL LINE TERMINAL, PASSIVE OPTICAL NETWORK SYSTEM, AND BANDWIDTH ASSIGNMENT METHOD 审中-公开
标题翻译：光线终端，被动光网络系统和带宽分配方法
公开(公告)号：US20100239255A1
公开(公告)日：2010-09-23
申请号：US12711827
申请日：2010-02-24
申请人： Hiroki IKEDA , Tohru Kazawa
发明人： Hiroki IKEDA , Tohru Kazawa
IPC分类号： H04J14/00
CPC分类号： H04J3/1694
摘要： An OLT of a station-side device in a PON system, the OLT including: an MPCP control unit for receiving bandwidth requirements from each of a plurality of ONUs of home-side devices; a bandwidth assignment period calculation unit for calculating the following bandwidth assignment period for each request source based on the received bandwidth requirements for each request source; a dynamic bandwidth assignment calculation unit for calculating the following bandwidth assignment for each request source based on the received bandwidth requirements for each request source; and the MPCP control unit for transmitting transmission allowance based on the calculated bandwidth assignment to each of the plurality of ONUs.
摘要翻译：一种PON系统中的站侧设备的OLT，所述OLT包括：MPCP控制单元，用于从多个本地设备的ONU中的每一个接收带宽要求; 带宽分配周期计算单元，用于基于每个请求源的接收到的带宽要求来计算每个请求源的以下带宽分配周期; 动态带宽分配计算单元，用于基于每个请求源的接收到的带宽要求来计算每个请求源的以下带宽分配; 以及MPCP控制单元，用于基于所计算的带宽分配来发送所述多个ONU中的每一个的发送允许。

7. 发明授权

US08090261B2 Network system, optical line terminating apparatus, and optical network apparatus 有权
标题翻译：网络系统，光线路终端装置和光网络装置
公开(公告)号：US08090261B2
公开(公告)日：2012-01-03
申请号：US12073949
申请日：2008-03-12
申请人： Toshiki Sugawara , Hiroki Ikeda , Yusuke Yajima , Tohru Kazawa
发明人： Toshiki Sugawara , Hiroki Ikeda , Yusuke Yajima , Tohru Kazawa
IPC分类号： H04J14/00
CPC分类号： H04B10/27 , H04B10/272 , H04J3/0682
摘要： A general object of the present invention is to provide an optical communication system in which an optical transmission power of an optical communication apparatus is controlled to be a required minimum power that apparatuses of all subscribers in the optical communication system meet a prescribed error rate. An optical line terminating apparatus (OLT) transmits data to multiple optical network apparatuses (ONUs) at an optical intensity calculated based on information acquired from the multiple ONUs, which is related to optical intensities of signals that the multiple ONUs receive from the OLT, the optical intensity being calculated so that a minimum optical intensity of the optical intensities of the signals is greater than a predetermined value.
摘要翻译：本发明的一般目的是提供一种光通信系统，其中光通信装置的光传输功率被控制为光通信系统中所有用户的设备满足规定的错误率所需的最小功率。光线路终端装置（OLT）以基于从多个ONU获取的信息计算出的光强度向多个光网络装置（ONU）发送数据，其与多个ONU从OLT接收的信号的光强度相关，计算光强度，使得信号的光强度的最小光强度大于预定值。

8. 发明授权

US08189571B2 System apparatus and method for interconnecting TDM and frame/packet communication networks 有权
标题翻译：用于互连TDM和帧/分组通信网络的系统装置和方法
公开(公告)号：US08189571B2
公开(公告)日：2012-05-29
申请号：US11339449
申请日：2006-01-26
申请人： Masahiko Mizutani , Yoshihiro Ashi , Masayuki Takase , Atsushi Iwamura , Akihiko Tanaka , Hideki Endo , Tohru Kazawa
发明人： Masahiko Mizutani , Yoshihiro Ashi , Masayuki Takase , Atsushi Iwamura , Akihiko Tanaka , Hideki Endo , Tohru Kazawa
IPC分类号： H04L12/66
CPC分类号： H04L45/04 , H04J3/1617 , H04J2203/0083
摘要： An interconnection between fully synchronous networks and next-generation frame communications networks is disclosed. A means of bidirectional frame format conversion between a synchronous multiplexing system and a logical multiplexing system is provided, along with a method of transmitting data between different networks on a path as if it were being transmitted in the same network. Further, when converting network control information in an STM network into data suitable for a packet network, even across the boundary of a synchronous multiplexing system and a logical multiplexing system, a unified communication management means is provided over the whole path.
摘要翻译：公开了完全同步网络和下一代帧通信网络之间的互连。提供了在同步多路复用系统和逻辑多路复用系统之间的双向帧格式转换的方法，以及在路径上的不同网络之间传输数据的方法，如同在同一网络中传输一样。此外，当将STM网络中的网络控制信息转换为适用于分组网络的数据时，甚至跨越同步复用系统和逻辑多路复用系统的边界，在整个路径上提供统一的通信管理装置。

9. 发明授权

US08184975B2 Passive optical network system and optical line terminator 有权
标题翻译：无源光网络系统和光线路终端器
公开(公告)号：US08184975B2
公开(公告)日：2012-05-22
申请号：US12388020
申请日：2009-02-18
申请人： Masao Niibe , Tohru Kazawa , Takeshi Kiyose , Ryosuke Nishino
发明人： Masao Niibe , Tohru Kazawa , Takeshi Kiyose , Ryosuke Nishino
IPC分类号： H04J14/00 , H04B10/00
CPC分类号： H04Q11/0067 , H04B10/70 , H04J3/0652 , H04J3/0682 , H04Q2011/0064 , H04Q2011/0079
摘要： In a passive optical network system in which signals from a master station to plural slave stations are time-division multiplexed and transmitted, the slave stations different in transmission speed are mixedly contained. The master station (OLU) performs ranging for each transmission speed, and grasps all the slave stations different in transmission speed for each transmission speed, and generates a frame including signals of a suitable transmission speed corresponding to each slave station. When the frame is generated, in a downstream signal in which signals of plural transmission speeds are mixed, a dummy signal is set at a place where the transmission speed is changed, and a time necessary to follow a change in level of a received signal due to a change in optical level caused when the transmission speed is changed is secured. Thereby, each ONU avoids a reception error occurring in the time necessary to follow.
摘要翻译：在从主站到多个从站的信号被时分复用和发送的无源光网络系统中，传输速度不同的从站被混合地包含。主站（OLU）为每个传输速度执行测距，并且掌握每个传输速度的传输速度不同的所有从站，并且生成包括与每个从站对应的合适传输速度的信号的帧。当生成帧时，在混合有多个传输速度的信号的下行信号中，将虚拟信号设置在传输速度改变的地方，并且跟随接收信号的电平变化所需的时间导致当传输速度改变时引起的光学水平的变化。因此，每个ONU避免在所需的时间内发生的接收错误。

10. 发明授权

US07936992B2 Apparatus of adjusting optical signal transmission timing 有权
标题翻译：调整光信号传输定时的装置
公开(公告)号：US07936992B2
公开(公告)日：2011-05-03
申请号：US12434959
申请日：2009-05-04
申请人： Tohru Kazawa , Masaki Ohira , Yusuke Yajima , Akihiko Tsuchiya , Yoshinobu Morita
发明人： Tohru Kazawa , Masaki Ohira , Yusuke Yajima , Akihiko Tsuchiya , Yoshinobu Morita
IPC分类号： H04J14/00
CPC分类号： H04B10/272 , H04J3/0682 , H04J3/1694
摘要： In a light reception element such as an APD (Avalanche Photo Diode) used for receiving a high-speed and weak optical signal, it is possible to prevent the phenomenon of distortion of a signal inputted after a large-level light is received. A PON (Passive Optical Network) system includes an OLT (Optical Line Terminal) which can impartially and effectively transmit light reception data to each ONU (Optical Network Unit). According to a light reception amplitude received by each ONU, an inter-frame gap of an appropriate length is assigned for each ONU. The OLT includes a unit for measuring and accumulating the reception light amplitude and data on the inter-frame gap of an appropriate length decided in advance according to the characteristic of the light reception device and generates a grant value for assuring an inter-frame gap of an appropriate length by using the both information.
摘要翻译：在用于接收高速和弱光信号的APD（雪崩光电二极管）等光接收元件中，可以防止在接收到大电平光之后输入的信号的失真现象。 PON（Passive Optical Network，无源光网络）系统包括能够向每个ONU（Optical Network Unit，光网络单元）公正地有效地发送光接收数据的OLT（Optical Line Terminal）。根据每个ONU接收的光接收幅度，为每个ONU分配适当长度的帧间间隔。 OLT包括用于根据光接收装置的特性预先确定的适当长度的帧间隙上的接收光幅度和数据的测量和累加单元，并生成用于确保帧间间隔的帧间间隔的准许值通过使用这两个信息适当的长度。

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