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    • 1. 发明授权
    • Reed Solomon error correcting circuit and method and device for Euclidean mutual division
    • Reed Solomon误差校正电路和欧氏相互分割的方法和装置
    • US06374384B1
    • 2002-04-16
    • US09202998
    • 1999-03-10
    • Kazuhiro OhtaToshihiko FukuokaYoshihiko Fukumoto
    • Kazuhiro OhtaToshihiko FukuokaYoshihiko Fukumoto
    • H03M1315
    • H03M13/159H03M13/15H03M13/1515H03M13/1535H03M13/1555
    • The Reed-Solomon error-correcting circuit in accordance with a first invention is constructed so as to perform parallel operation by two-step pipelined processing in a syndrome generating circuit and an error-correcting circuit. The error-correcting circuit operates in synchronization with a clock with a period of 1/N the period of the received symbol clock, where N≧1, and N is an integer. Further, an error-locator-polynomial/error-evaluator-polynomial calculating circuit in the error-correcting circuit has a memory in which the syndrome is input and a Galois-field operations circuit that is connected to the memory. By these means, the Reed-Solomon error-correcting circuit in the present invention performs high-speed processing with small-scale hardware. Further, in an Euclid's algorithm that obtains an error-locator-polynomial, by performing Galois-field operations, from the syndrome equation S(z)=sk−1zk−1+sk−2zk−2+ . . . +s0, a second invention performs initial setting as M(z)=1, B(z)=sk−1zk−1+sk−2zk−2+ . . . +s0, and, depending on the coefficients of the syndrome equation S(z), as  A(z)=sk−2zk−1+sk−3zk−2+ . . . +s0z, L(z)=z, to reduce the number of Galois-field operations.
    • 根据第一发明的里德 - 所罗门误差校正电路被构造成在校正子发生电路和纠错电路中通过两步流水线处理进行并行操作。 误差校正电路与接收符号时钟的周期为1 / N的时钟同步工作,其中N> = 1,N为整数。 此外,误差校正电路中的误差定位器/误差评估器 - 多项式计算电路具有其中输入了校正子的存储器和连接到存储器的伽罗瓦域操作电路。 通过这些方式,本发明的里德 - 所罗门纠错电路以小规模的硬件进行高速处理。 此外,在通过执行伽罗瓦域操作获得误差定位器多项式的欧几里德算法中,从综合征方程式中,第二发明执行初始设置,并且根据校正子方程S(z)的系数,作为A(z )= sk-2zk-1 + sk-3zk-2 +。 。 。 + s0z,以减少Galois-field操作的数量。
    • 5. 发明申请
    • Radio Transmission Method
    • 无线传输方式
    • US20080192661A1
    • 2008-08-14
    • US11597618
    • 2005-06-01
    • Yasuo HamamotoHiroshi HayashinoKazuhiro OhtaNorihito UenoYoshitaka Ohta
    • Yasuo HamamotoHiroshi HayashinoKazuhiro OhtaNorihito UenoYoshitaka Ohta
    • H04B7/26
    • H04L47/10H04L1/1887
    • Retransmission control and retransmission are performed at a lower priority than the transmission of multicast packets from a transmission apparatus to two or more reception apparatuses. A communication apparatus performs wireless multicast transmission to reliable transmit packets. In a transmission side terminal, sequence numbers are attached at a layer higher than the Mac layer to each of secured-bandwidth or priority control-type Mac layer multicast packets, and in a plurality of reception side terminals, missing packets are detected using the sequence numbers, and bandwidth other than the secured bandwidth or lower priority packets are used to perform retransmission requests. The transmission terminal retransmits data using bandwidth other than the secured bandwidth or lower priority packets, thereby enabling favorable reception of audio, video and data when transmitting the audio, video and data in real-time to the reception terminals using wireless secured bandwidth-type or priority control-type Mac layer multicast transmission.
    • 执行重发控制和重传的优先级低于从发送装置向两个或更多个接收装置的组播分组的传输。 通信装置对可靠的发送分组进行无线组播传输。 在发送侧终端中,将序列号附加在高于Mac层的层到每个安全带宽或优先级控制型Mac层组播分组,并且在多个接收侧终端中,使用序列检测丢失分组 数字和带宽以外的安全带宽或较低优先级的数据包用于执行重传请求。 传输终端使用除了安全带宽或较低优先级的分组之外的带宽重传数据,从而在使用无线安全带宽类型或实时传输音频,视频和数据时,实时地向接收终端发送音频,视频和数据,从而能够良好地接收音频,视频和数据 优先级控制型Mac层组播传输。
    • 8. 发明授权
    • Method and apparatus for carrying out a thermal shock test on ceramics
    • 对陶瓷进行热冲击试验的方法和装置
    • US6123452A
    • 2000-09-26
    • US238459
    • 1999-01-28
    • Shoji UchimuraHirohide IshiguroKazuhiro OhtaManabu TakatsuYasunobu Mizutani
    • Shoji UchimuraHirohide IshiguroKazuhiro OhtaManabu TakatsuYasunobu Mizutani
    • G01N3/60G01N3/00
    • G01N3/60
    • An apparatus for testing the thermal shock fracture strength of ceramics. The apparatus includes supporting means for supporting a ceramic test piece shaped as a rectangular parallelepiped at a first side surface thereof, force-detecting means for restraining a predetermined location of a second side surface of the ceramic test piece, the second side surface facing the first side surface, the force-detecting means and the supporting means restraining any deformation of the ceramic test piece when the second side surface of the ceramic test piece is heated, the force-detecting means being adapted to detect a force acting on the force-detecting means from the ceramic test piece, which tends to be deformed, but which deformation is restrained, means for moving the supporting means to press the ceramic test piece against the force-detecting means, and a heat-emissive element, which is an electric heater, for covering and heating the second side surface to cause a thermal shock in the ceramic test piece.
    • 一种用于测试陶瓷热冲击断裂强度的装置。 该装置包括用于支撑在其第一侧表面处形成为长方体的陶瓷测试件的支撑装置,用于限制陶瓷测试件的第二侧表面的预定位置的力检测装置,面向第一侧面的第二侧表面 所述力检测装置和所述支撑装置在陶瓷试件的第二侧面被加热时,抑制陶瓷试件的任何变形,所述力检测装置适于检测作用在力检测器上的力 来自陶瓷试件的装置,其倾向于变形,但是哪个变形受到限制,用于移动支撑装置以将陶瓷试件压靠在力检测装置上的装置,以及作为电加热器的发热元件 ,用于覆盖和加热第二侧表面以在陶瓷试件中引起热冲击。
    • 9. 发明授权
    • Wireless slave unit
    • 无线从单元
    • US08588131B2
    • 2013-11-19
    • US11629295
    • 2005-06-13
    • Shuichi SatoYasuo HamamotoHiroshi HayashinoKazuhiro OhtaYosuke UkitaHironori NakaeYoshitaka Ohta
    • Shuichi SatoYasuo HamamotoHiroshi HayashinoKazuhiro OhtaYosuke UkitaHironori NakaeYoshitaka Ohta
    • H04W4/00
    • H04W28/06H04W8/26H04W68/00H04W84/22
    • A wireless slave device for performing wireless network communication with another wireless slave device, the other wireless slave device being connected to a terminal, and wired network communication with a terminal, the wireless slave device including a wireless reception unit that wirelessly receives a notification frame including a MAC address of the terminal connected to the other wireless slave device and a MAC address of the other wireless slave device, a storage unit that associates and stores the MAC address of the other wireless slave device and the MAC address of the terminal both included in the wirelessly received notification frame, a wire reception unit that receives a frame transmitted from the terminal connected to the wireless slave device, and a filtering unit that discards the frame if the transmission destination MAC address of the frame received by wire does not match the MAC address stored in the storage unit.
    • 一种无线从设备,用于与另一无线从设备进行无线网络通信,另一无线从设备连接到终端,并与终端进行有线网络通信,所述无线从设备包括无线接收单元,无线接收单元包括: 连接到另一个无线从设备的终端的MAC地址和另一个无线从设备的MAC地址;存储单元,其将另一无线从设备的MAC地址和终端的MAC地址相关联并存储在一起, 无线接收通知帧,接收从连接到无线从设备的终端发送的帧的有线接收单元和如果通过有线接收的帧的发送目的地MAC地址与MAC不匹配的丢弃该帧的过滤单元 地址存储在存储单元中。