公开(公告)号：US06510183B1

公开(公告)日：2003-01-21

申请号：US09140726

申请日：1998-08-27

申请人： Nozomu Ikeda ,  Akira Ogino ,  Takehiro Sugita ,  Takashi Usui

发明人： Nozomu Ikeda ,  Akira Ogino ,  Takehiro Sugita ,  Takashi Usui

IPC分类号： H04L2728

CPC分类号： G11B20/00913 ,  G11B20/00086 ,  G11B20/10527 ,  H04B1/707 ,  H04N5/913 ,  H04N2005/91321 ,  H04N2005/91328 ,  H04N2005/9135

摘要： A spectrum spread signal spread by a spread code synchronized with a synchronous signal accompanying to an information signal is superimposed on the information signal and is then transmitted and the spectrum spread signal is then detected using the spread code for detection synchronized with the synchronous signal from the information signal on which the spectrum spread signal is superimposed. A value of the information signal on which the spectrum spread signal is superimposed is added or subtracted depending on the chip value of the relevant spread code for detection in each chip of the spread code for detection. The spectrum spread signal is detected by determining whether the added/subtracted value has exceeded the predetermined threshold value or not.

摘要翻译： 通过与伴随信息信号的同步信号同步的扩频码扩频的频谱扩展信号被叠加在信息信号上，然后被发送，然后使用与来自该信号信号的同步信号同步的检测用扩频码来检测频谱扩展信号 叠加有频谱扩展信号的信息信号。 根据用于检测的扩展码的每个芯片中的相关的检测用扩频码的码片值，加上或减去频谱扩展信号叠加的信息信号的值。 通过确定相加/减去的值是否已经超过预定阈值来检测频谱扩展信号。

公开(公告)号：US06487363B1

公开(公告)日：2002-11-26

申请号：US09696845

申请日：2000-10-26

申请人： Akira Ogino ,  Takehiro Sugita ,  Takashi Usui

发明人： Akira Ogino ,  Takehiro Sugita ,  Takashi Usui

IPC分类号： H04N591

CPC分类号： H04N5/913 ,  H04N2005/91314 ,  H04N2005/91321 ,  H04N2005/91328 ,  H04N2005/9135

摘要： A playback device 10 generates a pseudo random noise (PN) code with a start timing based on a video sync signal, and generates a PN inverse code which has a reverse polarity to that of the PN code with a timing based on the video sync signal. An anti-duplication control signal is spectrally spread using this PN code, superimposed on the video signal and supplied to a recording device. A PN inverse code which is the same as the PN inverse code used in the playback device is also generated in the recording device based on the video sync signal, and reverse spectral spread is performed using this PN inverse code.

摘要翻译： 再现装置10基于视频同步信号产生具有开始定时的伪随机噪声（PN）码，并且产生具有与PN码相反极性的PN反码，其基于视频同步信号 。 使用该PN码对反复制控制信号进行频谱扩展，叠加在视频信号上并提供给记录装置。 基于视频同步信号也在记录装置中产生与重放装置中使用的PN反码相同的PN反码，并使用该PN反码执行反频谱扩展。

公开(公告)号：US06467533B1

公开(公告)日：2002-10-22

申请号：US09694263

申请日：2000-10-24

申请人： Toshihiko Murakami ,  Masahiko Oka ,  Hirohisa Kikuchi ,  Atsushi Murata ,  Takashi Usui

发明人： Toshihiko Murakami ,  Masahiko Oka ,  Hirohisa Kikuchi ,  Atsushi Murata ,  Takashi Usui

IPC分类号： B22D11128

CPC分类号： B22D11/1281

摘要： Among the slab-supporting guide roll pairs disposed in the region in which a liquid core exists within the slab, at least four consecutive guide roll pairs are disposed under such conditions that the roll axis-to-axis distances on the fixed side and loose side of the guide roll pairs and the roll halfway-to-halfway distances on the fixed side and loose side are all different from one another. Casting is carried out while disposing the guide roll pairs under sucb conditions.

摘要翻译： 在布置在液体芯存在于板坯内的区域中的板坯支撑导向辊对中，至少四个连续的导辊对设置在固定侧和松散侧的辊轴对轴距离 的导向辊对以及固定侧和松散侧的卷半路到中途距离都彼此不同。 在将引导辊对设置在屈服条件下的同时进行铸造。

公开(公告)号：US06430172B1

公开(公告)日：2002-08-06

申请号：US09139887

申请日：1998-08-25

申请人： Takashi Usui ,  Hisaki Hiraiwa ,  Takehiro Sugita

发明人： Takashi Usui ,  Hisaki Hiraiwa ,  Takehiro Sugita

IPC分类号： H04J306

CPC分类号： H04B7/2643 ,  H04L12/6418 ,  H04L2012/6421 ,  H04L2012/6459

摘要： A radio communication system where data is transferred by TDMA in one frame. A frame is formed of a control-data transfer time region and an information-data transfer time region. In the control-data transfer time region, polling is performed for each terminal and a transfer rate and whether transfer data exists are returned to a control station as an ACK. The control station assigns a channel to each terminal according to this information a time period for data transfer in the information-data transfer time region is assigned to each terminal which has made a transmission request. In the region, asynchronous data and isochronous data can be transferred together. Since data is transferred in the time period assigned in advance in a frame, a constant transfer rate is obtained without being affected by an increase or decrease of traffic.

摘要翻译： 一种无线电通信系统，其中通过TDMA在一帧中传送数据。 帧由控制数据传送时间区域和信息数据传送时间区域形成。 在控制数据传送时间区域中，对每个终端执行轮询，并且传送速率以及是否存在传送数据作为ACK返回给控制站。 根据该信息，控制站向每个终端分配信道，在信息数据传送时间区域中的数据传送的时间段被分配给发送请求的每个终端。 在该区域中，异步数据和同步数据可以一起传输。 由于在帧中预先分配的时间段内传送数据，所以在不受流量增减的影响的情况下，获得恒定的传送速率。

公开(公告)号：US06414986B1

公开(公告)日：2002-07-02

申请号：US09377748

申请日：1999-08-20

申请人： Takashi Usui

发明人： Takashi Usui

IPC分类号： H04J1304

CPC分类号： H04J3/0611

摘要： In a method for radio communication of exchanging a transmission signal, which has been modulated by a prescribed method based on information data, between plural communication terminals and controlling the plural communication terminals by a control terminal, the control terminal generates a first code sequence to synchronize with the plural communication terminals, and transmits it to the plural communication terminals. The communication terminal synchronizes with the control terminal based on a reference timing obtained by receiving the first code sequence, generates a second code sequence representing the demodulation timing for the transmission signal and transmits it to another communication terminal out of the plural communication terminals, and then transmits the transmission signal to the other communication terminal. The other communication terminal demodulates the transmission signal, which is received following the second code sequence, based on the demodulation timing obtained by receiving the second code sequence.

摘要翻译： 在多个通信终端之间交换已经通过规定方法进行了调制的发送信号的无线通信方法中，在多个通信终端之间通过控制终端来控制多个通信终端，控制终端生成第一代码序列以进行同步 具有多个通信终端，并将其发送到多个通信终端。 通信终端基于通过接收第一代码序列获得的参考定时与控制终端同步，产生表示发送信号的解调定时的第二代码序列，并将其发送到多个通信终端中的另一通信终端，然后 将发送信号发送到另一通信终端。 另一个通信终端基于通过接收第二代码序列获得的解调定时来解调在第二代码序列之后接收的传输信号。

公开(公告)号：US06411664B1

公开(公告)日：2002-06-25

申请号：US09139434

申请日：1998-08-25

申请人： Takashi Usui ,  Hisaki Hiraiwa ,  Takehiro Sugita

发明人： Takashi Usui ,  Hisaki Hiraiwa ,  Takehiro Sugita

IPC分类号： H03D100

CPC分类号： H04L27/2655 ,  H04L5/22 ,  H04L27/2679

摘要： A correlation detecting apparatus is capable of securely detecting a M sequence code forming a reference for timing even when a plurality of signals with different amplitudes are time division multiplexed includes matched filter (82) for detecting a predetermined code from a received signal, an average amplitude detector circuit (83) for detecting an average amplitude of the received signal, and a divider circuit (84) for normalizing an output of the matched filter (82) by an output of the average amplitude detector circuit 83 are provided. The output of the matched filter (82) normalized by the divider circuit (84) is compared with a threshold value for outputting a correlation detecting signal. When a received signal level is large, the output level of the matched filter (82) becomes large. However, in this case because the average amplitude of the received signal also becomes large, a divided value of the output level of the matched filter (82) by the output level of the average amplitude detector circuit (83) makes almost no change. In contrast to this, the output level of the matched filter when an M sequence is received remains nearly constant irrespective of an input signal level. Therefore, the received signal of M sequence can be detected without fail from the output of the comparator circuit (85).

摘要翻译： 即使当具有不同幅度的多个信号被时分复用时，相关检测装置也能够安全地检测形成用于定时的基准的M序列码，包括用于从接收信号中检测预定码的匹配滤波器（82），平均幅度 检测电路（83），用于检测接收信号的平均幅度;以及分频电路（84），用于通过平均振幅检测器电路83的输出对匹配滤波器（82）的输出进行归一化。 由除法器电路（84）归一化的匹配滤波器（82）的输出与用于输出相关检测信号的阈值进行比较。 当接收信号电平较大时，匹配滤波器（82）的输出电平变大。 然而，在这种情况下，由于接收信号的平均幅度也变大，所以匹配滤波器（82）的输出电平的平均幅度检测电路（83）的输出电平的分压值几乎没有变化。 与此相反，当接收到M序列时，匹配滤波器的输出电平与输入信号电平无关，保持几乎恒定。 因此，可以从比较器电路（85）的输出端不间断地检测M序列的接收信号。

公开(公告)号：US6112008A

公开(公告)日：2000-08-29

申请号：US968119

申请日：1997-11-12

申请人： Takehiro Sugita ,  Akira Ogino ,  Takashi Usui

发明人： Takehiro Sugita ,  Akira Ogino ,  Takashi Usui

IPC分类号： G06F21/10 ,  G11B20/00 ,  G11B20/10 ,  H04N5/91 ,  H04N5/913 ,  H04N7/08 ,  H04N7/081 ,  H04N7/167 ,  H04N7/171 ,  H04N21/435 ,  H04N21/442 ,  H04N21/8355

CPC分类号： H04N5/913 ,  H04N2005/91314 ,  H04N2005/91321 ,  H04N2005/91328 ,  H04N2005/9135

摘要： The invention intends to reliably the control of duplicating information signals. In the duplication control method according to the invention, a main information signal containing a duplication control information transformed into a spread spectrum signal to be superimposed and a duplication control information superimposed by a processing different from the spectrum spreading is transmitted. The duplication control information transformed into a spread spectrum signal is extracted from the main information signal by reverse spectrum spreading, and the duplication control information superimposed by the different processing is extracted from the main information signal. Information closest to duplication prohibition is selected as an output duplication control information out of the plural extracted duplication control information. On the basis of the selected output duplication control information, the main information signal is controlled on duplication.

摘要翻译： 本发明意图可靠地控制复制信息信号。 在根据本发明的复制控制方法中，发送包含变换成要叠加的扩频信号的复制控制信息的主信息信号和通过与频谱扩展不同的处理叠加的复制控制信息。 通过反向扩频从主信息信号中提取变换为扩频信号的复制控制信息，并从主信息信号中提取由不同处理叠加的复制控制信息。 选择与复制禁止最接近的信息作为多个提取的复制控制信息中的输出复制控制信息。 基于选择的输出复制控制信息，主信息信号被重复地控制。

公开(公告)号：US6067330A

公开(公告)日：2000-05-23

申请号：US286754

申请日：1999-04-06

申请人： Takashi Usui

发明人： Takashi Usui

IPC分类号： H04N7/08 ,  H04J11/00 ,  H04L1/00 ,  H04L27/26 ,  H04N7/081 ,  H03D1/00 ,  H04L27/06

CPC分类号： H04L1/0071 ,  H04L1/0068 ,  H04L27/2647 ,  H04L1/0054

摘要： A demodulation apparatus includes selectors (15r, 15i) for selecting designated data from data of N points outputted from a Fast Fourier-transform circuit (13) and previously-prepared 0 data and outputting the selected data as data of a plurality of series, output order data generators (16, 17) for designating data selected by the selectors and a decoder (20) for decoding data based on data of a plurality of series outputted from the selectors. An interleaved and punctured OFDM-modulated signal can be demodulated by a simple arrangement and in a short period of time.

摘要翻译： 解调装置包括从快速傅立叶变换电路（13）输出的N点的数据中选择指定数据并预先准备好的0数据的选择器（15r，15i），并输出所选择的数据作为多个系列的数据，输出 用于指定由选择器选择的数据的订单数据发生器（16,17）和用于基于从选择器输出的多个串的数据来解码数据的解码器（20）。 交织和穿孔的OFDM调制信号可以通过简单的布置并在短时间内进行解调。

公开(公告)号：US6014408A

公开(公告)日：2000-01-11

申请号：US989512

申请日：1997-12-12

申请人： Tetsuya Naruse ,  Takashi Usui

发明人： Tetsuya Naruse ,  Takashi Usui

IPC分类号： H03K3/84 ,  H04B1/707 ,  G06F1/02 ,  H04B1/69 ,  H04K1/00 ,  H04L9/00

CPC分类号： H04J13/10 ,  H03K3/84 ,  H04B1/712

摘要： A Pseudorandom Noise (PN) code generating circuit includes a shift register, an adding circuit for exclusive-ORing tap output data of the shift register and feed-back output data of the shift register, selectors disposed as upstream circuits of each register composing the shift register, phase designating circuits for selectively obtaining tap output data of the shift register corresponding to mask data for designating the phase of the PN code, and a data storing device for storing the initial data and the mask data. When the initial data is set to the shift register, the initial data is stored in the data storing device and the initial data is set to each register of the shift register through the selectors. When the PN code is generated, the selectors send data stored in each register of the shift register so as to generate the PN code and the data storing device stores the mask data. Tap output data of the shift register is selectively obtained corresponding to the mask data.

摘要翻译： 伪随机噪声（PN）码产生电路包括移位寄存器，用于对移位寄存器的抽头输出数据进行异或运算的加法电路和移位寄存器的反馈输出数据，作为构成移位寄存器的每个寄存器的上游电路的选择器 寄存器，相位指定电路，用于选择性地获得与用于指定PN码的相位的掩模数据相对应的移位寄存器的抽头输出数据;以及数据存储装置，用于存储初始数据和掩码数据。 当将初始数据设置为移位寄存器时，初始数据被存储在数据存储装置中，并且通过选择器将初始数据设置到移位寄存器的每个寄存器。 当生成PN码时，选择器发送存储在移位寄存器的每个寄存器中的数据，以产生PN码，数据存储装置存储掩码数据。 根据掩模数据选择性地获得移位寄存器的抽头输出数据。

公开(公告)号：US09989050B2

公开(公告)日：2018-06-05

申请号：US14236586

申请日：2011-08-01

申请人： Kazuhiro Asayama ,  Takashi Usui

发明人： Kazuhiro Asayama ,  Takashi Usui

IPC分类号： F04B49/22 ,  F02M59/46 ,  F04B25/00 ,  F04B7/00 ,  F04B7/02

CPC分类号： F04B49/22 ,  F02M59/462 ,  F04B7/0053 ,  F04B7/0076 ,  F04B7/0266 ,  F04B25/00

摘要： A fuel injection pump is provided. The fuel injection pump includes a valve holder, a plunger, an inlet valve, an outlet valve, and a relief valve. The valve holder includes a pump chamber and a seat. The plunger configured to pressurize or depressurize the pump chamber. The inlet valve, the outlet valve, and the relief valve are arranged in an interior of the valve holder. The relief valve is provided on a downstream side of the outlet valve. The pump chamber is formed between the inlet valve and the outlet valve. The seat has a discharge passage and a return passage. The return passage is configured such that the fuel flows through the return passage from the downstream side of the outlet valve to an upstream side of the relief valve. The discharge passage and the return passage are formed offset from each other in the seat.