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41. 发明授权

US06522665B1 Data sequence generator, transmitter, information data decoder, receiver, transmitter-receiver, data sequence generating method, information data decoding method, and recording medium 有权
标题翻译：数据序列发生器，发射机，信息数据解码器，接收机，发射机 - 接收机，数据序列生成方法，信息数据解码方法和记录介质
公开(公告)号：US06522665B1
公开(公告)日：2003-02-18
申请号：US09269919
申请日：1999-04-01
申请人： Takashi Suzuki , Toshio Miki , Toshiro Kawahara , Nobuhiko Naka
发明人： Takashi Suzuki , Toshio Miki , Toshiro Kawahara , Nobuhiko Naka
IPC分类号： H04J322
CPC分类号： H04L1/008 , G11B20/12 , G11B20/1217 , G11B20/1833 , G11B27/10 , G11B27/3027 , H03M13/09 , H04L1/0072 , H04L1/08
摘要： The probability of frame destruction is lowered while suppressing the redundancy of the transmission data. On the transmitting side, a predetermined unique word is contained in a frame n for storing the n-th data, and header information n, frame length information and header information n−1 of the frame n−1 one frame before the frame n are subjected to error-correcting coding, contained in the frame n, and transmitted. On the receiving side, the header of the frame n is received. When the frame length information is transmitted with error, the timing is specified by detecting the unique word and header information in the next frame n+1. When the header of the frame n is not successfully decoded, the information data of the frame n is decoded by using the header information n inserted into a predetermined position of the frame n+1.
摘要翻译：在抑制传输数据的冗余性的同时降低帧破坏的概率。在发送侧，在用于存储第n个数据的帧n中包含预定的唯一字，并且帧n之前一帧的帧n-1的帧头信息n，帧长度信息和帧头信息n-1 经过包含在帧n中的纠错编码，并发送。在接收侧，接收帧n的报头。当错误地发送帧长度信息时，通过检测下一帧n + 1中的唯一字和标题信息来指定定时。当帧n的报头未成功解码时，通过使用插入到帧n + 1的预定位置的标题信息n来解码帧n的信息数据。

42. 发明授权

US6061444A Echo canceler and method for learning for the same 失效
标题翻译：回波消除器和学习方法相同
公开(公告)号：US6061444A
公开(公告)日：2000-05-09
申请号：US907174
申请日：1997-08-08
申请人： Toshiro Kawahara , Toshio Miki , Tomoyuki Ohya
发明人： Toshiro Kawahara , Toshio Miki , Tomoyuki Ohya
IPC分类号： H04B3/23 , H04M9/00
CPC分类号： H04B3/23 , H04B3/238
摘要： The present invention relates to an echo canceler for training an echo path estimation without providing a hindrance to a speech. The echo canceler of the present invention includes a pseudo noise generator for generating a certain pseudo noise. This pseudo noise is forcibly supplied to a transmission line for transmitting a far-end talker's voice. Here, in the case where the far-end talker's transmitting speech level is faint or the far-end talker is in a speechless condition, a certain correlation is established between the pseudo noise and a signal of the transmission line for transmitting the near-end talker's voice. Based on such a correlation as just mentioned, a coefficient for generating an echo replica is calculated. Therefore, a training for estimating an echo path is performed based on the pseudo noise and without depending on the far-end talker's voice, thereby generating an appropriate echo replica.
摘要翻译：回波消除器技术领域本发明涉及一种回波消除器，用于训练回波路径估计，而不会妨碍语音。本发明的回波消除器包括用于产生某种伪噪声的伪噪声发生器。该伪噪声被强制地提供给用于发送远端讲话者的语音的传输线。这里，在远端讲话者的发送语音电平为微弱或远端讲话者处于无语状态的情况下，在伪噪声与用于发送近端的传输线路的信号之间建立一定的相关性讲话者的声音基于如上所述的相关性，计算用于生成回波复制品的系数。因此，基于伪噪声进行用于估计回波路径的训练，并且不依赖于远端讲话者的语音，从而生成适当的回波复制品。

43. 再颁专利

USRE44435E1 Power mode aware packet communication method and apparatus 有权
公开(公告)号：USRE44435E1
公开(公告)日：2013-08-13
申请号：US12720430
申请日：2010-03-09
申请人： Moo Ryong Jeong , Toshiro Kawahara
发明人： Moo Ryong Jeong , Toshiro Kawahara
IPC分类号： H04L12/56 , H04W4/00 , H04W24/00
CPC分类号： H04L47/10 , H04L12/10 , H04L12/12 , H04L47/2441 , H04L47/32 , Y02D50/40
摘要： Packet communication method and system in which a packet destined for a terminal is provided service according to a service table indexed by packet classification and the terminal's power mode. The service table may specify for a connection a predetermined quality of service or discarding the packet. For a power mode having an alerting (i.e., paging) mechanism, the service may include alerting the terminal. The service table may also include a network edge point's own service requests and service requests from terminals, provisioning servers, and handoff sources. For a multicast or broadcast packet, as each terminal may be in a different power mode, the associated service in the service table may therefore be different for each terminal. In that case, the packet is provided with service so that any given terminal is provided with at least the quality of service specified in the service table. Thus, a multicast or broadcast packet is discarded when the service specified for all terminals is “discard.” Each terminal is alerted, however, if the associated service includes alerting the terminal. During handoff, a part of service table associated with the terminal can be transferred from the handoff source to the handoff destination.

44. 发明授权

US08054798B2 Proxy active scan for wireless networks 失效
标题翻译：代理主动扫描无线网络
公开(公告)号：US08054798B2
公开(公告)日：2011-11-08
申请号：US10545464
申请日：2004-05-20
申请人： Moo Ryong Jeong , Fujio Watanabe , Toshiro Kawahara
发明人： Moo Ryong Jeong , Fujio Watanabe , Toshiro Kawahara
IPC分类号： H04W4/00
CPC分类号： H04W48/16 , H04W36/08 , H04W48/14 , H04W84/12 , H04W92/20
摘要： Active scanning method in a wireless network for fast determining available access points (106, 806) using inter-AP (Access Point) communication is described. In the scanning method, a mobile station (102, 802) sends Probe Request for Proxy frame to the current AP (104, 804) serving the mobile station (102, 802). In response to the Probe Request for Proxy frame, the current AP (104, 804) send Proxy Probe Request packet to the appropriate APs (106, 806). In response to the Proxy Probe Request packet, the neighbor APs (106, 806) send Probe Response frame to the mobile station (102, 802) on its operating channel. Since the mobile station (102, 802) moves to the channel being examined after sending the Probe Request for Proxy frame, it receives the Probe Response frame if it is in the coverage area of the neighbor AP (106, 806). The content of Probe Response frame provides the mobile station (102, 802) with the information to be used in handoff decision and network join procedures. Thus, the mobile station (102, 802) neither has to move to the channel to be examined nor send Probe Request frame on that channel. This enables active scan to be initiated even when the neighbor AP (106, 806) is operating in PCF (Point Coordination Function) and the network is in CFP (Contention Free Period), during which unassociated mobile stations (including the scanning mobile station) cannot send packets.
摘要翻译：描述了使用AP（接入点）通信来快速确定可用接入点（106,806）的无线网络中的主动扫描方法。在扫描方法中，移动站（102,802）向服务于移动站（102,802）的当前AP（104,804）发送用于代理帧的探测请求。响应于针对代理帧的探测请求，当前AP（104,804）向适当的AP（106,806）发送代理探测请求分组。响应于代理探测请求分组，相邻AP（106,806）在其操作信道上向移动台（102,802）发送探测响应帧。由于移动站（102,802）在发送代理探测请求帧之后移动到被检查的信道，所以如果它在邻居AP（106,806）的覆盖区域内，它接收探测响应帧。探测响应帧的内容为移动台（102,802）提供要用于切换决策和网络连接过程的信息。因此，移动台（102,802）既不必移动到要检查的信道，也不在该信道上发送探测请求帧。即使当相邻AP（106,806）在PCF（点协调功能）中操作并且网络处于CFP（无争用周期））时，也可以启动主动扫描，在此期间，未关联的移动站（包括扫描移动站）无法发送数据包。

45. 发明申请

US20090175448A1 WIRELESS NETWORK HANDOFF KEY 审中-公开
公开(公告)号：US20090175448A1
公开(公告)日：2009-07-09
申请号：US12402350
申请日：2009-03-11
申请人： Fujio Watanabe , Craig B. Gentry , Gang Wu , Toshiro Kawahara
发明人： Fujio Watanabe , Craig B. Gentry , Gang Wu , Toshiro Kawahara
IPC分类号： H04L9/00
CPC分类号： H04L9/0836 , H04L63/0428 , H04L63/061 , H04L2209/80 , H04W12/0013 , H04W12/04 , H04W36/0011 , H04W80/02
摘要： The present invention provides a method and system for handoff in a wireless communication network. In one embodiment, a common handoff encryption key is generated by an authentication server and transmitted to a first access point and a second access point. The first access point transmits the handoff encryption key to a wireless terminal. The wireless terminal encrypts output data with the handoff encryption key. When the wireless terminal is associated with the second access point, the second access point decrypts data from the wireless terminal with the handoff encryption key. In a second embodiment, a handoff WEP key generation secret parameter is provided to a first and a second access point. Both access points generate a handoff WEP key as a function of the handoff WEP key generation secret parameter and an address of a wireless terminal. The first access point transmits the handoff WEP key to the wireless terminal. The second access point communicates data packets encrypted with the handoff WEP key with the wireless terminal.

46. 发明申请

US20080031179A1 METHOD FOR SUPPORTING SCALABLE AND RELIABLE MULTICAST IN TDMA/TDD SYSTEMS USING FEEDBACK SUPPRESSION TECHNIQUES 失效
标题翻译：使用反馈抑制技术在TDMA / TDD系统中支持可扩展和可靠的多播的方法
公开(公告)号：US20080031179A1
公开(公告)日：2008-02-07
申请号：US11871858
申请日：2007-10-12
申请人： Xia Gao , Fujio Watanabe , Gang Wu , Ravi Jain , Toshiro Kawahara
发明人： Xia Gao , Fujio Watanabe , Gang Wu , Ravi Jain , Toshiro Kawahara
IPC分类号： H04H1/00
CPC分类号： H04L12/1868 , H04L1/0057 , H04L1/08 , H04L1/1621 , H04L1/1685 , H04L1/1819 , H04L5/1469 , H04L12/1863 , H04L12/189 , H04W8/26 , H04W74/04 , H04W76/40 , H04W84/00 , H04W84/04 , H04W84/12
摘要： A method supports scalable and reliable multicast in a wireless network with a large bandwidth-delay product. In this method, acknowledgement packets from different receivers experiencing the same number of data packets lost are assigned the same time slots. This method can be combined with other loss recovery techniques, such as forward error correction (FEC) recovery, proactive protection, feedback suppression and collision detection. Scalability is achieved as bandwidth usage relates only to the number of packets transmitted, rather than the number of receivers.
摘要翻译：一种方法支持具有大带宽延迟产品的无线网络中的可扩展和可靠的组播。在这种方法中，来自经历相同数量数据包丢失的不同接收机的确认分组被分配相同的时隙。该方法可以与其他丢失恢复技术相结合，如前向纠错（FEC）恢复，主动保护，反馈抑制和冲突检测。实现可扩展性，因为带宽使用仅与发送的分组的数量相关，而不是接收机的数量。

47. 发明授权

US07263064B2 Packet communication system with packets classification, division and retransmission 有权
标题翻译：分组通信系统具有分组分类，分组和重传
公开(公告)号：US07263064B2
公开(公告)日：2007-08-28
申请号：US10087792
申请日：2002-03-05
申请人： Takeshi Yoshimura , Toshiro Kawahara , Minoru Etoh
发明人： Takeshi Yoshimura , Toshiro Kawahara , Minoru Etoh
IPC分类号： H04L12/26
CPC分类号： H04W28/06 , H04L1/1809 , H04L47/10 , H04L47/14 , H04L47/2408 , H04L47/2416 , H04L47/2433 , H04L2001/0098 , H04W28/14 , H04W72/1236
摘要： A method for transmitting packets classified according to QoS requirement from a transmitting node to a receiving node is provided, the transmitting node being configured to select sequentially a QoS class, to divide a queued packet to be transmitted, which belongs to the selected class, into a plurality of predetermined data units, to transmit one of the predetermined data units, and to apply a transmitter-side retransmission control process to the data unit to be transmitted when the selected class is a QoS class specified for data type packets, and the receiving node being configured to receive sequentially the data units transmitted from the transmitting node, to assemble a plurality of received data units to restore an original packet for each QoS class, and to apply a receiver-side retransmission control process to the received data units when the received data unit belongs to one of the data type QoS classes.
摘要翻译：提供了一种从发送节点向接收节点发送根据QoS要求分类的分组的方法，所述发送节点被配置为顺序地选择QoS类别，将属于所选类别的要发送的排队分组划分为多个预定数据单元，用于发送预定数据单元之一，并且当所选择的类别是为数据类型分组指定的QoS类别时，向发送的数据单元应用发送机侧重发控制处理，并且接收节点被配置为顺序地接收从发送节点发送的数据单元，组合多个接收的数据单元以恢复每个QoS类的原始分组，并且当接收机侧重传控制处理接收到的数据单元属于数据类型QoS类之一。

48. 发明授权

US07191369B2 Method and device for interleaving and method and device for de-interleaving 有权
标题翻译：用于交织的方法和装置以及用于解交织的方法和装置
公开(公告)号：US07191369B2
公开(公告)日：2007-03-13
申请号：US10885992
申请日：2004-07-06
申请人： Toshiro Kawahara , Toshio Miki , Sanae Hotani , Takashi Suzuki
发明人： Toshiro Kawahara , Toshio Miki , Sanae Hotani , Takashi Suzuki
IPC分类号： G06F11/00 , G06F12/16
CPC分类号： H04L1/0071 , H03M13/00 , H03M13/27 , H03M13/2703 , H03M13/2707 , H03M13/2764 , H03M13/2792 , H03M13/35 , H03M13/356 , H04L1/0009 , H04L1/0025 , H04L1/007 , H04L1/0072 , H04L1/0088
摘要： The writing address supply part 210 supplies writing addresses for writing the bits forming bit sequences corresponding to the header H contained in a frame to be transmitted or stored and bit sequences corresponding to the data D, into the operating memory 220. The reading address supply part 230 alternately supplies to the operating memory 220 a plurality of addresses for reading a plurality of continuous bits corresponding to the header H from the operating memory 220, and an address for reading 1 bit corresponding to the data D from the operating memory 220, and reads the bit sequence such that the bits forming the bit sequence corresponding to the header H are scattered and arranged within the bit sequence forming the data D, from the operating memory. In accordance with such an interleaving device, it is possible to individually randomize frames according to their constituent data, and it is possible to transmit the bits that make up such data in a format which is most suited for said data.
摘要翻译：写地址提供部分210将写入地址用于写入与要发送或存储的帧中包含的标题H相对应的位序列的位和与数据D对应的位序列的位写入到操作存储器220中。读取地址提供部件230从操作存储器220交替地向操作存储器220提供用于读取对应于头部H的多个连续位的多个地址，以及从操作中读取与数据D对应的1位的地址存储器220，并且读取比特序列，使得形成与头部H相对应的比特序列的比特被分散并布置在从操作存储器形成数据D的比特序列中。根据这种交织装置，可以根据其构成数据单独地随机化帧，并且可以以最适合于所述数据的格式来发送构成这样的数据的比特。

49. 发明申请

US20060002383A1 Power mode aware packet communication method and apparatus 有权
公开(公告)号：US20060002383A1
公开(公告)日：2006-01-05
申请号：US11159852
申请日：2005-06-22
申请人： Moo Jeong , Toshiro Kawahara
发明人： Moo Jeong , Toshiro Kawahara
IPC分类号： H04L12/50
CPC分类号： H04L47/10 , H04L12/10 , H04L12/12 , H04L47/2441 , H04L47/32 , Y02D50/40
摘要： Packet communication method and system in which a packet destined for a terminal is provided service according to a service table indexed by packet classification and the terminal's power mode. The service table may specify for a connection a predetermined quality of service or discarding the packet. For a power mode having an alerting (i.e., paging) mechanism, the service may include alerting the terminal. The service table may also include a network edge point's own service requests and service requests from terminals, provisioning servers, and handoff sources. For a multicast or broadcast packet, as each terminal may be in a different power mode, the associated service in the service table may therefore be different for each terminal. In that case, the packet is provided with service so that any given terminal is provided with at least the quality of service specified in the service table. Thus, a multicast or broadcast packet is discarded when the service specified for all terminals is “discard.” Each terminal is alerted, however, if the associated service includes alerting the terminal. During handoff, a part of service table associated with the terminal can be transferred from the handoff source to the handoff destination.

50. 发明授权

US06871302B1 Method and device for interleaving and method and device for deinterleaving 有权
标题翻译：用于交织的方法和装置以及用于解交织的方法和装置
公开(公告)号：US06871302B1
公开(公告)日：2005-03-22
申请号：US09462773
申请日：1999-05-27
申请人： Toshiro Kawahara , Toshio Miki , Sanae Hotani , Takashi Suzuki
发明人： Toshiro Kawahara , Toshio Miki , Sanae Hotani , Takashi Suzuki
IPC分类号： H03M13/00 , H03M13/27 , H03M13/35 , H04L1/00 , H04N19/895 , G06F11/00
CPC分类号： H04L1/0071 , H03M13/00 , H03M13/27 , H03M13/2703 , H03M13/2707 , H03M13/2764 , H03M13/2792 , H03M13/35 , H03M13/356 , H04L1/0009 , H04L1/0025 , H04L1/007 , H04L1/0072 , H04L1/0088
摘要： The writing address supply part 210 supplies writing addresses for writing the bits forming bit sequences corresponding to the header H contained in a frame to be transmitted or stored and bit sequences corresponding to the data D, into the operating memory 220. The reading address supply part 230 alternately supplies to the operating memory 220 a plurality of addresses for reading a plurality of continuous bits corresponding to the header H from the operating memory 220, and an address for reading 1 bit corresponding to the data D from the operating memory 220, and reads the bit sequence such that the bits forming the bit sequence corresponding to the header H are scattered and arranged within the bit sequence forming the data D, from the operating memory. In accordance with such an interleaving device, it is possible to individually randomize frames according to their constituent data, and it is possible to transmit the bits that make up such data in a format which is most suited for said data.
摘要翻译：写入地址提供部分210将写入地址用于写入与要发送或存储的帧中包含的标题H相对应的比特序列的位和对应于数据D的比特序列到写入地址提供部分210中。读取地址提供部分 230交替地向操作存储器220提供用于从操作存储器220读取对应于头部H的多个连续位的多个地址和用于从操作存储器220读取对应于数据D的1位的地址，并且读取比特序列使得形成对应于标题H的比特序列的比特被分散并布置在从操作存储器形成数据D的比特序列内。根据这种交织装置，可以根据其构成数据单独地随机化帧，并且可以以最适合于所述数据的格式来发送构成这样的数据的比特。

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