公开(公告)号：US5781590A

公开(公告)日：1998-07-14

申请号：US844660

申请日：1997-04-21

申请人： Masato Shiokawa ,  Hiromi Honma

发明人： Masato Shiokawa ,  Hiromi Honma

IPC分类号： G11B20/10 ,  H03H17/00 ,  H04B3/04 ,  H04L25/48 ,  H04L27/06

CPC分类号： G11B20/10101 ,  G11B20/10009 ,  G11B20/10111

摘要： A PRML (Partial Response Maximum Likelihood) signal processing apparatus for both MP (Mark Position) recorded medium and ME (Mark Edge) recorded medium. The apparatus has a PR (Partial Response) equalizer to which the reproduction signal from the medium is inputted, a folded back value calculation circuit for folding back an input signal thereto with a predetermined level, and a Viterbi detector having a path memory and performing a Viterbi detection. The path memory is constructed based on a structure of a trellis for a signal recorded by the MP recording. In case of the MP recorded medium, the equalizer transfer characteristics and the reference amplitude both for the MP recording are set to the PR equalizer and the Viterbi detector, respectively, and the output of the PR equalizer is directly supplied to the Viterbi detector. On the other hand, in case of the MP recorded medium, the equalizer transfer characteristics and the reference amplitude both for the ME recording are set, and the output of the PR equalizer is supplied to the Viterbi detector via the folded back value calculation circuit.

摘要翻译： 用于MP（Mark Position）记录介质和ME（Mark Edge）记录介质的PRML（部分响应最大似然）信号处理装置。 该装置具有输入来自媒体的再现信号的PR（部分响应）均衡器，用于以预定电平折叠输入信号的折返值计算电路，以及具有路径存储器并执行 维特比检测。 基于由MP记录记录的信号的网格结构构建路径存储器。 在MP记录介质的情况下，均衡器传送特性和用于MP记录的参考幅度分别被设置到PR均衡器和维特比检测器，并且PR均衡器的输出被直接提供给维特比检测器。 另一方面，在MP记录介质的情况下，设置ME记录的均衡器传送特性和参考幅度，并且通过折返值计算电路将PR均衡器的输出提供给维特比检测器。

公开(公告)号：US5604724A

公开(公告)日：1997-02-18

申请号：US534210

申请日：1995-09-26

申请人： Masato Shiokawa

发明人： Masato Shiokawa

IPC分类号： G11B7/00 ,  G11B7/005 ,  G11B20/10 ,  G11B20/18 ,  H03M13/23 ,  H03H7/30

CPC分类号： G11B20/10009

摘要： In a signal processor for processing a multilevel signal, a partial response equalizer is provided having a first predetermined number of reference amplitudes. The equalizer receives the multilevel signal and detects a significant instant of amplitude transition of the multilevel signal with respect to the reference amplitudes and produces a signal representative of the amplitude at the detected significant instant. The amplitude representative signal assumes one of a second predetermined number of amplitudes including spontaneously generated amplitudes, the second predetermined number being greater than the first predetermined number of the reference amplitudes. A maximum likelihood estimator, connected to the equalizer, have transition states and a state transition rule which determines one of the states with respect to decision thresholds greater in number than the first predetermined number and equal to or smaller than the second predetermined number. The estimator receives the amplitude representative signal from the equalizer and perform maximum likelihood estimation on the equalizer output according to the state transition rule.

摘要翻译： 在用于处理多电平信号的信号处理器中，提供具有第一预定数量的参考幅度的部分响应均衡器。 均衡器接收多电平信号并且检测多电平信号相对于参考幅度的幅度转变的显着瞬间，并产生表示检测到的有效时刻的振幅的信号。 振幅代表信号采用包括自发产生的幅度的第二预定数量的幅度中的一个，第二预定数量大于参考幅度的第一预定数量。 连接到均衡器的最大似然估计器具有转换状态和状态转换规则，该状态转换规则确定关于数量大于第一预定数量且等于或小于第二预定数量的判定阈值的状态之一。 估计器从均衡器接收幅度代表信号，并根据状态转换规则对均衡器输出执行最大似然估计。

公开(公告)号：US20080159251A1

公开(公告)日：2008-07-03

申请号：US11979691

申请日：2007-11-07

申请人： Masato Shiokawa

发明人： Masato Shiokawa

IPC分类号： H04B7/208

CPC分类号： H04W72/085

摘要： A mobile communication system including a base station which divides a transmission frequency band into a plurality of frequency blocks, and assigns radio resources to each mobile station for each of the frequency blocks, the base station including: a frequency block assignment information creation portion that creates frequency block assignment information based on a downlink signal reception status and a downlink signal reception status degradation rate in each mobile station; and a radio resource assignment portion that assigns the radio resources to each frequency block based on the frequency block assignment information.

摘要翻译： 一种移动通信系统，包括将发送频带划分为多个频率块的基站，并为每个频率块向每个移动台分配无线资源，所述基站包括：频率块分配信息生成部，其生成 基于每个移动站中的下行链路信号接收状态和下行链路信号接收状态劣化率的频率块分配信息; 以及无线资源分配部，其基于所述频率块分配信息，向每个频率块分配无线资源。

公开(公告)号：US08307254B2

公开(公告)日：2012-11-06

申请号：US12470197

申请日：2009-05-21

申请人： Masato Shiokawa ,  Kunifusa Maruyama

发明人： Masato Shiokawa ,  Kunifusa Maruyama

IPC分类号： H03M13/00

CPC分类号： H04L1/0047 ,  H04L1/0042 ,  H04L1/0061 ,  H04L5/0091 ,  H04W76/28

摘要： A base station creates a dummy pattern added with an error correction code, during occurring of a control channel not allocated for transmission of control information, transmits the dummy pattern instead of control information at a power level lower than a normal power level. A mobile station decodes control information transmitted through the control channel, examines whether or not a value specified by the decoded control information is within a suitable range, and performs error detection of the decoded control information. The mobile station stops decoding of data transmitted through a data channel, upon judging that the value is not within the suitable range or detecting an error in the error detection.

摘要翻译： 在没有分配给控制信息的控制信道的发生期间，基站创建添加有纠错码的虚拟模式，以低于正常功率电平的功率电平发送虚设模式而不是控制信息。 移动台解码通过控制信道发送的控制信息，检查由解码的控制信息指定的值是否在合适的范围内，并对解码的控制信息进行错误检测。 在判断为不在合适范围内的情况下，移动台停止通过数据信道发送的数据的解码，或检测出错误检测中的错误。

公开(公告)号：US20120093271A1

公开(公告)日：2012-04-19

申请号：US13379851

申请日：2010-06-21

申请人： Masato Shiokawa

发明人： Masato Shiokawa

IPC分类号： H04B1/10

CPC分类号： H04L25/0212 ,  H04L27/2647

摘要： A channel estimation device comprises: a channel variation detection unit that determines whether variation width of a received signal level is not less than preset threshold width and whether variation period of received signal is not greater than preset threshold period; and a channel estimation unit that, if the channel variation detection unit determines that the variation width of the received signal level is not less than preset threshold width and that variation period is not greater than preset threshold period, refers to hysteresis of received signal level to determine whether lowering of received signal level is temporal, and, if it is determined that lowering of received signal level is temporal, allowing received signal to pass through, without removing received signal as noise, even when received signal level is not greater than signal level to be removed as noise.

摘要翻译： 信道估计装置包括：信道变化检测单元，确定接收信号电平的变化幅度是否不小于预设阈值宽度，以及接收信号的变化周期是否不大于预设阈值周期; 以及信道估计单元，如果信道变化检测单元确定接收信号电平的变化幅度不小于预设阈值宽度，并且该变化周期不大于预设阈值周期，则将接收信号电平的迟滞设置为 确定接收信号电平的下降是否是时间的，并且如果确定接收信号电平的降低是时间的，则即使接收到的信号电平不大于信号电平，允许接收信号通过，而不将接收到的信号作为噪声去除 作为噪声被去除。

公开(公告)号：US08619921B2

公开(公告)日：2013-12-31

申请号：US13379851

申请日：2010-06-21

申请人： Masato Shiokawa

发明人： Masato Shiokawa

IPC分类号： H04L27/06

CPC分类号： H04L25/0212 ,  H04L27/2647

摘要： A channel estimation device comprises: a channel variation detection unit that determines whether variation width of a received signal level is not less than preset threshold width and whether variation period of received signal is not greater than preset threshold period; and a channel estimation unit that, if the channel variation detection unit determines that the variation width of the received signal level is not less than preset threshold width and that variation period is not greater than preset threshold period, refers to hysteresis of received signal level to determine whether lowering of received signal level is temporal, and, if it is determined that lowering of received signal level is temporal, allowing received signal to pass through, without removing received signal as noise, even when received signal level is not greater than signal level to be removed as noise.

摘要翻译： 信道估计装置包括：信道变化检测单元，确定接收信号电平的变化幅度是否不小于预设阈值宽度，以及接收信号的变化周期是否不大于预设阈值周期; 以及信道估计单元，如果信道变化检测单元确定接收信号电平的变化幅度不小于预设阈值宽度，并且该变化周期不大于预设阈值周期，则将接收信号电平的迟滞设置为 确定接收信号电平的下降是否是时间的，并且如果确定接收信号电平的降低是时间的，则即使接收到的信号电平不大于信号电平，允许接收信号通过，而不将接收到的信号作为噪声去除 作为噪声被去除。

公开(公告)号：US08189529B2

公开(公告)日：2012-05-29

申请号：US11979691

申请日：2007-11-07

申请人： Masato Shiokawa

发明人： Masato Shiokawa

IPC分类号： H04W4/00

CPC分类号： H04W72/085

摘要： A mobile communication system including a base station which divides a transmission frequency band into a plurality of frequency blocks, and assigns radio resources to each mobile station for each of the frequency blocks, the base station including: a frequency block assignment information creation portion that creates frequency block assignment information based on a downlink signal reception status and a downlink signal reception status degradation rate in each mobile station; and a radio resource assignment portion that assigns the radio resources to each frequency block based on the frequency block assignment information.

摘要翻译： 一种移动通信系统，包括将发送频带划分为多个频率块的基站，并为每个频率块向每个移动台分配无线资源，所述基站包括：频率块分配信息生成部，其生成 基于每个移动站中的下行链路信号接收状态和下行链路信号接收状态劣化率的频率块分配信息; 以及无线资源分配部，其基于所述频率块分配信息，向每个频率块分配无线资源。

公开(公告)号：US06463905B1

公开(公告)日：2002-10-15

申请号：US09806867

申请日：2001-04-05

申请人： Minoru Okubo ,  Masahiro Saito ,  Shinichiro Ishida ,  Masato Shiokawa ,  Takashi Fukushima ,  Kouichi Kouzato

发明人： Minoru Okubo ,  Masahiro Saito ,  Shinichiro Ishida ,  Masato Shiokawa ,  Takashi Fukushima ,  Kouichi Kouzato

IPC分类号： F02B7700

CPC分类号： F02B77/13 ,  F01P11/12 ,  F01P2001/005

摘要： An engine working machine formed by storing a radiator and a cooling fan, for leading heat exchange air for the radiator, in a package together with an engine and a working machine. Wherein a storage space for the engine and working machine is separate from a ventilating port, which communicates with a space between the radiator and the cooling fan. The space is shielded by partitions from an air leading space to which air is led after being passed through the radiator by the cooling fan. A cooling air leading port for externally cooling the engine and the working machine is formed in a part of the package so that outside air led from the cooling air leading port passes the storing space and is exhausted from the ventilating port to the air leading space, to which air is led after having passed through the radiator.

摘要翻译： 一种发动机加工机，其特征在于，将散热器和冷却风扇一起存储在散热器的热交换空气中，与发动机和作业机一起包装在一起。 其中用于发动机和工作机的存储空间与通风口分开，该通风口与散热器和冷却风扇之间的空间相通。 该空间被冷却风扇通过散热器后的空气引导空气的空间隔开。 一个用于外部冷却发动机和作业机器的冷却空气引导口形成在包装的一部分中，使得从冷却空气引导口引出的外部空气通过存储空间，并从通风口排出到空气引导空间， 空气通过散热器后被引导到空气。