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1. 发明申请

US20070030937A1 Bit synchronization circuit with phase tracking function 失效
标题翻译：位同步电路具有相位跟踪功能
公开(公告)号：US20070030937A1
公开(公告)日：2007-02-08
申请号：US11299819
申请日：2005-12-13
申请人： Yusuke Yajima , Tohru Kazawa , Yoshihiro Ashi
发明人： Yusuke Yajima , Tohru Kazawa , Yoshihiro Ashi
IPC分类号： H03D3/24
CPC分类号： H04L7/0337 , H03L7/0814 , H03L7/087 , H03L7/091 , H04L7/0004 , H04L7/046
摘要： A bit synchronization circuit comprising an initial phase determining unit for rapidly determining, during a period of receiving a preamble of burst data, a clock with a phase synchronized with received burst data from among multi-phase clocks having the same frequency as an internal reference clock and a phase tracking unit for modifying the synchronized phase clock responsive to phase variation of received data during a period of receiving a payload of burst data by taking the synchronized phase clock determined by the initial phase determining unit as an initial phase. The bit synchronization circuit retimes burst data with a data retiming clock having a predetermined phase relation with the synchronized phase clock and outputs the burst data in synchronization with the internal reference clock.
摘要翻译：一种位同步电路，包括初始相位确定单元，用于在从脉冲串数据的前导码接收周期内快速确定具有与内部参考时钟相同频率的多相位时钟中的接收脉冲串数据同步的时钟以及相位跟踪单元，用于通过将由初始相位确定单元确定的同步相位时钟作为初始相位，在接收到突发数据的有效载荷的周期期间响应于接收数据的相位变化来修正同步相位时钟。位同步电路使用具有与同步相位时钟具有预定相位关系的数据重新定时时钟重新匹配突发数据，并且与内部参考时钟同步输出脉冲串数据。

2. 发明授权

US08204168B2 Bit synchronization circuit with phase tracking function 有权
标题翻译：位同步电路具有相位跟踪功能
公开(公告)号：US08204168B2
公开(公告)日：2012-06-19
申请号：US12349914
申请日：2009-01-07
申请人： Yusuke Yajima , Tohru Kazawa , Yoshihiro Ashi
发明人： Yusuke Yajima , Tohru Kazawa , Yoshihiro Ashi
IPC分类号： H04L7/00 , H03D3/24
CPC分类号： H04L7/0337 , H03L7/0814 , H03L7/087 , H03L7/091 , H04L7/0004 , H04L7/046
摘要： A bit synchronization circuit comprising an initial phase determining unit for rapidly determining, during a period of receiving a preamble of burst data, a clock with a phase synchronized with received burst data from among multi-phase clocks having the same frequency as an internal reference clock and a phase tracking unit for modifying the synchronized phase clock responsive to phase variation of received data during a period of receiving a payload of burst data by taking the synchronized phase clock determined by the initial phase determining unit as an initial phase. The bit synchronization circuit retimes burst data with a data retiming clock having a predetermined phase relation with the synchronized phase clock and outputs the burst data in synchronization with the internal reference clock.
摘要翻译：一种位同步电路，包括初始相位确定单元，用于在从脉冲串数据的前导码接收周期内快速确定具有与内部参考时钟相同频率的多相位时钟中的接收脉冲串数据同步的时钟以及相位跟踪单元，用于通过将由初始相位确定单元确定的同步相位时钟作为初始相位，在接收到突发数据的有效载荷的周期期间响应于接收数据的相位变化来修正同步相位时钟。位同步电路使用具有与同步相位时钟具有预定相位关系的数据重新定时时钟重新匹配突发数据，并且与内部参考时钟同步输出脉冲串数据。

3. 发明授权

US07483506B2 Bit synchronization circuit with phase tracking function 失效
标题翻译：位同步电路具有相位跟踪功能
公开(公告)号：US07483506B2
公开(公告)日：2009-01-27
申请号：US11299819
申请日：2005-12-13
申请人： Yusuke Yajima , Tohru Kazawa , Yoshihiro Ashi
发明人： Yusuke Yajima , Tohru Kazawa , Yoshihiro Ashi
IPC分类号： H04L7/00 , H04J3/06
CPC分类号： H04L7/0337 , H03L7/0814 , H03L7/087 , H03L7/091 , H04L7/0004 , H04L7/046
摘要： A bit synchronization circuit comprising an initial phase determining unit for rapidly determining, during a period of receiving a preamble of burst data, a clock with a phase synchronized with received burst data from among multi-phase clocks having the same frequency as an internal reference clock and a phase tracking unit for modifying the synchronized phase clock responsive to phase variation of received data during a period of receiving a payload of burst data by taking the synchronized phase clock determined by the initial phase determining unit as an initial phase. The bit synchronization circuit retimes burst data with a data retiming clock having a predetermined phase relation with the synchronized phase clock and outputs the burst data in synchronization with the internal reference clock.
摘要翻译：一种位同步电路，包括初始相位确定单元，用于在从脉冲串数据的前导码接收周期内快速确定具有与内部参考时钟相同频率的多相位时钟中的接收脉冲串数据同步的时钟以及相位跟踪单元，用于通过将由初始相位确定单元确定的同步相位时钟作为初始相位，在接收到突发数据的有效载荷的周期期间响应于接收数据的相位变化来修正同步相位时钟。位同步电路使用具有与同步相位时钟具有预定相位关系的数据重新定时时钟重新匹配突发数据，并且与内部参考时钟同步输出脉冲串数据。

4. 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。

5. 发明授权

US08290369B2 Optical access system 有权
标题翻译：光接入系统
公开(公告)号：US08290369B2
公开(公告)日：2012-10-16
申请号：US12379281
申请日：2009-02-18
申请人： Kenichi Sakamoto , Yoshihiro Ashi , Tohru Kazawa , Ryosuke Nishino , Masayuki Takase , Masahiko Mizutani
发明人： Kenichi Sakamoto , Yoshihiro Ashi , Tohru Kazawa , Ryosuke Nishino , Masayuki Takase , Masahiko Mizutani
IPC分类号： H04B10/00
CPC分类号： H04J3/1694 , H04J3/0682
摘要： An optical access system capable of avoiding cutoffs or interruption in the periodically transmitted signals that occur during the ranging time is provided. A first method to avoid signal cutoffs is to stop periodic transmit signals at the transmitter during the ranging period, and transmit all the periodic transmit signals together when the ranging ends, and buffer the signals at the receiver to prepare for ranging. A second method is to fix definite periods ahead of time for performing ranging, then cluster the multiple periodic transmit signals together in sets at the transmitter and send them, and then disassemble those sets back into signals at the receiver. The transmitting and receiving is then controlled so that the transmit periods do not overlap with the ranging periods. In this way an optical access system is provided that can send and receive signals requiring periodic transmissions without interruption even during ranging operation.
摘要翻译：提供一种能够避免在测距时间期间发生的周期性发射信号中的截断或中断的光接入系统。避免信号截止的第一种方法是在测距周期期间在发射机处停止周期性发射信号，并且在测距结束时将所有周期性发射信号传输到一起，并且在接收机处缓冲信号以准备测距。第二种方法是提前确定一段时间进行测距，然后将多个周期性发射信号集合在一起，并将其发送给发射机，然后将它们分组回接收机的信号。然后控制发送和接收，使得发送周期不与测距周期重叠。以这种方式，提供光接入系统，即使在测距操作期间也可以发送和接收需要周期性传输的信号而不中断。

6. 发明申请

US20100150554A1 Passive optical network (PON) system 失效
公开(公告)号：US20100150554A1
公开(公告)日：2010-06-17
申请号：US12656713
申请日：2010-02-16
申请人： Masahiko Mizutani , Takeshi Shibata , Tohru Kazawa , Yoshihiro Ashi , Masanobu Kobayashi , Hideki Endo
发明人： Masahiko Mizutani , Takeshi Shibata , Tohru Kazawa , Yoshihiro Ashi , Masanobu Kobayashi , Hideki Endo
IPC分类号： H04J14/00
CPC分类号： H04Q11/0067 , H04Q2011/0064
摘要： A PON system capable of utilizing the bandwidth of an optical transmission channel in the PON section. In a PON system including an OLT and a plurality of ONUs, the OLT has: a downstream frame processing unit that removes at least part of the header information in a layer 2 header from a downstream frame received from a wide area network, and converts the remaining frame portion into a frame having a header specific to the PON section; and a downstream frame processing unit that extracts a downstream frame portion to be transferred to a user terminal, from a received frame from a PON, and adds the layer 2 header information deleted in the OLT.

7. 发明授权

US07676127B2 Optical communication system using WDMA and CDMA 失效
标题翻译：使用WDMA和CDMA的光通信系统
公开(公告)号：US07676127B2
公开(公告)日：2010-03-09
申请号：US11858566
申请日：2007-09-20
申请人： Masahiko Mizutani , Toshiki Sugawara , Tohru Kazawa , Yoshihiro Ashi
发明人： Masahiko Mizutani , Toshiki Sugawara , Tohru Kazawa , Yoshihiro Ashi
IPC分类号： G02B6/28
CPC分类号： H04B1/707 , H04B2201/70715 , H04J14/005 , H04J14/0226 , H04J14/0246 , H04J14/0247 , H04J14/025 , H04J14/0252 , H04J14/0257 , H04J14/0258 , H04J14/0267 , H04J14/0269 , H04J14/0282 , H04Q11/0067 , H04Q2011/0064 , H04Q2011/0086
摘要： In a PON system, an OLT periodically transmits a channel resource information block specifying a carrier wavelength and a spreading code on a first downstream channel to which a spread-spectrum spreader having a first spreading code is applied; one of ONUs receives the channel resource information block with a spread-spectrum despreader having the first spreading code and transmits a connection request to the OLT, using the carrier wavelength and the spreading code specified by the channel resource information block; the OLT having received the connection request transmits a new channel resource information block specifying a carrier wavelength and a spreading code to be used on an upstream data channel to the requester ONU through the first channel; and the requester ONU transmits data, using the carrier wavelength and the spreading code specified by the new channel resource information block.
摘要翻译：在PON系统中，OLT在具有应用具有第一扩展码的扩频扩频器的第一下行信道周期性地发送指定载波波长和扩展码的信道资源信息块; 一个ONU使用具有第一扩展码的扩频解扩器接收信道资源信息块，并使用由信道资源信息块指定的载波波长和扩展码向OLT发送连接请求; 已经接收到连接请求的OLT通过第一信道向请求者ONU发送指定用于上行数据信道的载波波长和扩展码的新信道资源信息块; 并且请求者ONU使用载波波长和由新的信道资源信息块指定的扩展码来发送数据。

8. 发明申请

US20090210553A1 Packet forwarding apparatus using token bucket algorithm and leaky bucket algorithm 审中-公开
标题翻译：包转发装置采用令牌桶算法和漏桶算法
公开(公告)号：US20090210553A1
公开(公告)日：2009-08-20
申请号：US12379280
申请日：2009-02-18
申请人： Masayuki Takase , Yoshihiro Ashi , Masahiko Mizutani , Tohru Kazawa , Kenichi Sakamoto , Taishi Shinagawa
发明人： Masayuki Takase , Yoshihiro Ashi , Masahiko Mizutani , Tohru Kazawa , Kenichi Sakamoto , Taishi Shinagawa
IPC分类号： G06F15/16
CPC分类号： H04L47/10 , H04L47/20 , H04L47/21 , H04L47/215 , H04L47/22 , H04Q11/0067 , H04Q2011/0064
摘要： A packet forwarding apparatus and network system for providing different types of bandwidth control services to the user; in which a packet forwarding apparatus for transferring data comprises an interface unit for sending and receiving packets, and a traffic shaper for controlling the packet transmission timing and a packet switch for sending an output to the interface unit as the destination of the received packet; and the traffic shaper uses a token bucket algorithm when transmitting a packet to guarantee the minimum frame rate, and uses a leaky bucket algorithm when limiting the peak frame rate.
摘要翻译：一种分组转发装置和网络系统，用于向用户提供不同类型的带宽控制服务; 其中用于传送数据的分组转发装置包括用于发送和接收分组的接口单元，以及用于控制分组传输定时的流量整形器和用于向接口单元发送输出作为接收分组的目的地的分组交换机; 并且流量整形器在发送分组时使用令牌桶算法来保证最小帧速率，并且在限制峰值帧速率时使用泄漏桶算法。

9. 发明申请

US20070264017A1 PON system and Optical Network Unit 失效
标题翻译： PON系统和光网络单元
公开(公告)号：US20070264017A1
公开(公告)日：2007-11-15
申请号：US11503246
申请日：2006-08-14
申请人： Masahiko Mizutani , Takeshi Shibata , Tohru Kazawa , Yoshihiro Ashi , Masanobu Kobayashi , Masayuki Takase
发明人： Masahiko Mizutani , Takeshi Shibata , Tohru Kazawa , Yoshihiro Ashi , Masanobu Kobayashi , Masayuki Takase
IPC分类号： H04J14/00
CPC分类号： H04J3/1694 , H04L12/185 , H04Q11/0066 , H04Q11/0067 , H04Q2011/0073 , H04Q2011/0079
摘要： Provided is an ONU that suppresses transmission of a useless multicast control message to a PON section and enables a communication bandwidth of the PON section to be effectively used. The ONU of the PON system has a multicast group management table that shows a correspondence between a multicast group identifier and an address of a user terminal participating in a multicast group. When the ONU receives a request message of participation in the multicast group from the user terminal, the ONU registers the correspondence between the multicast group identifier indicated by the received message and the user terminal address. A new received message is deleted without being sent to the OLT if another user terminal address is registered already, along with a correspondence with the same multicast group identifier, in the multicast group management table.
摘要翻译：提供了抑制对PON部分的无用组播控制消息的发送的ONU，能够有效地使用PON部的通信带宽。 PON系统的ONU具有表示组播组标识与参与组播组的用户终端的地址的对应关系的组播组管理表。当ONU从用户终端接收到参与组播组的请求消息时，ONU注册由接收到的消息指示的组播组标识符与用户终端地址之间的对应关系。如果在多播组管理表中已经注册了另一个用户终端地址以及与同一组播组标识符的对应关系，则新的接收到的消息被删除而不被发送到OLT。

10. 发明申请

US20070223490A1 Passive optical network (PON) system 失效
标题翻译：无源光网络（PON）系统
公开(公告)号：US20070223490A1
公开(公告)日：2007-09-27
申请号：US11492832
申请日：2006-07-26
申请人： Masahiko Mizutani , Takeshi Shibata , Tohru Kazawa , Yoshihiro Ashi , Masanobu Kobayashi , Hideki Endo
发明人： Masahiko Mizutani , Takeshi Shibata , Tohru Kazawa , Yoshihiro Ashi , Masanobu Kobayashi , Hideki Endo
IPC分类号： H04L12/56
CPC分类号： H04Q11/0067 , H04Q2011/0064
摘要： A PON system capable of utilizing the bandwidth of an optical transmission channel in the PON section. In a PON system including an OLT and a plurality of ONUs, the OLT has: a downstream frame processing unit that removes at least part of the header information in a layer 2 header from a downstream frame received from a wide area network, and converts the remaining frame portion into a frame having a header specific to the PON section; and a downstream frame processing unit that extracts a downstream frame portion to be transferred to a user terminal, from a received frame from a PON, and adds the layer 2 header information deleted in the OLT.
摘要翻译：一种能够利用PON部分中的光传输信道的带宽的PON系统。在包括OLT和多个ONU的PON系统中，OLT具有：下游帧处理单元，从从广域网接收到的下行帧中去除层2报头中的头部信息的至少一部分，并将剩余帧部分变成具有对PON部分特有的标题的帧; 以及从PON的接收帧中提取要传送到用户终端的下行帧部分的下行帧处理单元，并且将删除在OLT中的层2报头信息相加。

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