公开(公告)号：US4944032A

公开(公告)日：1990-07-24

申请号：US345712

申请日：1989-05-01

申请人： Sadashi Kageyama ,  Yoshio Abe ,  Yoshio Yasumoto ,  Shuji Inoue ,  Hitoshi Takai ,  Mitsujiro Matsumoto ,  Kouji Aono ,  Kiyoshi Uchimura ,  Iwasaki Eiji

发明人： Sadashi Kageyama ,  Yoshio Abe ,  Yoshio Yasumoto ,  Shuji Inoue ,  Hitoshi Takai ,  Mitsujiro Matsumoto ,  Kouji Aono ,  Kiyoshi Uchimura ,  Iwasaki Eiji

IPC分类号： H04N5/21 ,  H04N5/44 ,  H04N7/08 ,  H04N7/085 ,  H04N7/087 ,  H04N11/24

CPC分类号： H04N7/0122 ,  H04N11/006 ,  H04N11/008 ,  H04N5/211 ,  H04N7/08 ,  H04N7/085 ,  H04N7/087

摘要： A multiplex signal processing apparatus in a singal transmitting and receiving system includes at the transmitting side: a first amplitude-modulator for modulating a first carrier by a main signal to obtain a vestigial sideband, amplitude-modulated main signal; a second amplitude-modulator for modulating a second carrier which has the same frequency but differs in phase by 90.degree. from the first carrier by a multiplex signal to obtain a double sideband, amplitude-modulated multiplex signal; an inverse Nyquist filter for filtering this signal to obtain a vestigial sideband, amplitude-modulated multiplex signal; and an adder for adding the vestigial sideband, amplitude-modulated main and multiplex signals to obtain a multiplexed signal. The apparatus at the receiving side includes: a Nyquist filter for filtering the multiplexed signal; a carrier regenerator for regenerating the first and second carriers from the multiplexed signal; a main signal detector for detecting the main signal from the multiplexed signal passed through the Nyquist filter by using the first carrier; a filter for removing quadrature distortion from the multiplexed signal; and a multiplex signal detector for detecting the multiplex signal from the multiplexed signal passed through the filter by using the second carrier. By inverse Nyquist filtering the auxiliary signal in quadrature to the picture carrier, a normal synchronous receiver will produce a conventional television signal without distortion (crosstalk) caused by quadrature distortion of an auxiliary signal containing additional picture information while at the same time allowing relatively simple demodulation of the auxiliary signal in improved receivers without adding distortion.

公开(公告)号：US5828707A

公开(公告)日：1998-10-27

申请号：US731830

申请日：1996-10-21

申请人： Yoshio Urabe ,  Hitoshi Takai ,  Hidetoshi Yamasaki

发明人： Yoshio Urabe ,  Hitoshi Takai ,  Hidetoshi Yamasaki

IPC分类号： H04L27/227 ,  H04L27/233 ,  H03D3/22 ,  H04L27/22

CPC分类号： H04L27/2331

摘要： A differential detecting apparatus includes samplers 1 and 2, differential detection calculating unit 3, and two post-detection filters 4 and 5. Differential detection calculating unit 3 performs a differential detection with time-division multiplexing on data output from these samplers and alternately outputs a data sequence of a part of cosine component of the phase difference of the modulated signal and a data sequence of the rest of the cosine component. Differential detection calculating unit 3 also alternately outputs a data sequence of a part of sine component of the phase difference and a data sequence of the rest of the sine component. Each of post-detection filters 4 and 5 includes linear interpolating filter 35 and integral filter 36 which are connected in series. The linear interpolating filter 35 obtains a moving average from successive three pieces of input data weighted by 1:2:1 and the integral filter 36 obtains an integral value from successive k pieces of input data.

摘要翻译： 差分检测装置包括采样器1和2，差分检测计算单元3和两个检测后滤波器4和5.差分检测计算单元3对从这些采样器输出的数据进行时分复用执行差分检测，并交替地输出 调制信号的相位差的余弦分量的一部分的数据序列和余弦分量的其余部分的数据序列。 差分检测计算单元3还交替地输出相位差的正弦分量的一部分的数据序列和正弦分量的其余部分的数据序列。 后检测滤波器4和5中的每一个包括串联连接的线性内插滤波器35和积分滤波器36。 线性内插滤波器35从由1:2:1加权的连续三个输入数据中获得移动平均，并且积分滤波器36从连续的k个输入数据获得积分值。

公开(公告)号：US5754947A

公开(公告)日：1998-05-19

申请号：US404047

申请日：1995-03-14

申请人： Takumi Tanabe ,  Hitoshi Takai ,  Hiroaki Asano

发明人： Takumi Tanabe ,  Hitoshi Takai ,  Hiroaki Asano

IPC分类号： H04B7/24 ,  H04B7/26 ,  H04L12/28 ,  H04W4/00 ,  H04W28/00 ,  H04W74/08 ,  H04W84/12

CPC分类号： H04W74/0816 ,  H04L1/188 ,  H04W76/02 ,  H04L1/1877

摘要： A radio communication method for transmitting and receiving data between a first terminal and a second terminal comprises the following two steps. A step of establishing a connection between the first terminal and the second terminal when the first terminal and the second terminal have detected that a signal has not been transmitted on a predetermined channel, and the other step of starting data communications between the first terminal and the second terminal which have established the connection, and transmitting the predetermined signal on the predetermined channel from both the first terminal and the second terminal throughout the data communications.

摘要翻译： 一种用于在第一终端和第二终端之间发送和接收数据的无线电通信方法包括以下两个步骤。 当第一终端和第二终端已经检测到在预定信道上没有发送信号时，建立第一终端和第二终端之间的连接的步骤，以及开始第一终端和第二终端之间的数据通信的另一步骤 已经建立了连接的第二终端，并且在整个数据通信中从第一终端和第二终端在预定信道上发送预定信号。

公开(公告)号：US5712879A

公开(公告)日：1998-01-27

申请号：US506321

申请日：1995-07-24

申请人： Akihiro Tatsuta ,  Yoshio Urabe ,  Hitoshi Takai

发明人： Akihiro Tatsuta ,  Yoshio Urabe ,  Hitoshi Takai

IPC分类号： H04L27/227 ,  H03D3/00 ,  H04L27/22 ,  H04L27/06

CPC分类号： H03D3/007 ,  H03D2200/005 ,  H03D2200/0062 ,  H03D3/006

摘要： A signal adding device and a differential signal detecting device, wherein the signal adding device adds n input signals using n A/D converters, a selector and a lowpass filter. The n input signals are sampled in sequence by the A/D converter and digitized. Each digitized data is time-division multiplexed by the selector and input to the lowpass filter. The output of the lowpass filter is equal to an added signal of n input signals. The differential signal detecting device detects from inphase and quadrature-phase baseband signals the sine and cosine components of a phase difference at two instants of the phase-modulated signal. Two A/D converters digitize and convert the inphase and quadrature-phase baseband signals to inphase data and quadrature-phase data at predetermined intervals. A cosine component calculating unit calculates the cosine component by alternately selecting the inphase data and the quadrature-phase data. Similarly, a sine component calculating unit calculates the sine component by alternately selecting the inphase data and the quadrature-phase data. Two selectors select either the inphase data or the quadrature-phase data at predetermined intervals. By alternately selecting the inphase data and quadrature-phase data, and then multiplying the results, differential detection can be achieved with fewer multipliers and adders than the prior art differential detecting devices.

摘要翻译： 一种信号添加装置和差分信号检测装置，其中信号添加装置使用n个A / D转换器，选择器和低通滤波器来添加n个输入信号。 n个输入信号由A / D转换器依次采样并数字化。 每个数字化数据由选择器进行时分复用，并输入低通滤波器。 低通滤波器的输出等于n个输入信号的相加信号。 差分信号检测装置从相位和正交相位基带信号中检测相位调制信号的两个时刻的相位差的正弦和余弦分量。 两个A / D转换器将同相和正交相位基带信号以预定的间隔数字化并转换为同相数据和正交相位数据。 余弦分量计算单元通过交替地选择同相数据和正交相位数据来计算余弦分量。 类似地，正弦分量计算单元通过交替地选择同相数据和正交相位数据来计算正弦分量。 两个选择器以预定间隔选择同相数据或正交相位数据。 通过交替地选择同相数据和正交相位数据，然后将结果相乘，可以利用比现有技术的差分检测装置更少的乘法器和加法器来实现差分检测。

公开(公告)号：US20080212706A1

公开(公告)日：2008-09-04

申请号：US11886072

申请日：2006-03-24

申请人： Hideki Nakahara ,  Hitoshi Takai ,  Koichiro Tanaka

发明人： Hideki Nakahara ,  Hitoshi Takai ,  Koichiro Tanaka

IPC分类号： H04B7/06

CPC分类号： H04L27/206 ,  H04B7/0678

摘要： A transmission device (100) includes a differential encoding section (101) for differentially encoding transmission data, a first waveform generation section (102), a second waveform generation section (103), and two transmission antennas (109 and 110). A reception device (140) includes a reception antenna (141), a delay detection section (144), and a data determination section (145) for low-pass filtering a delay detection signal. The reception device (140) receives modulated signals modulated by using two wave forms having low correlations with each other. Thus, regardless of the presence or absence of delay dispersion in a propagation path and even in a high-speed fading in which the propagation path varies at high speed, a transmission diversity effect can be achieved, thereby making it possible to improve transmission characteristics.

摘要翻译： 发送装置（100）包括用于对发送数据进行差分编码的差分编码部（101），第一波形生成部（102），第二波形生成部（103）和两个发送天线（109,110）。 接收装置（140）包括接收天线（141），延迟检测部（144）和用于对延迟检测信号进行低通滤波的数据判定部（145）。 接收装置（140）接收通过使用彼此具有低相关性的两个波形调制的调制信号。 因此，无论传播路径中是否存在延迟色散，并且即使在传播路径高速变化的高速衰落中也能够实现发送分集效果，能够提高传输特性。

公开(公告)号：US06284362B1

公开(公告)日：2001-09-04

申请号：US09484457

申请日：2000-01-18

申请人： Hitoshi Takai ,  Tsuyoshi Yuki ,  Shingo Mukaida ,  Daisuke Tagawa ,  Kenji Tanaka ,  Keiji Tanaka ,  Satoshi Tamabuchi ,  Yoshiyuki Iwasaki

发明人： Hitoshi Takai ,  Tsuyoshi Yuki ,  Shingo Mukaida ,  Daisuke Tagawa ,  Kenji Tanaka ,  Keiji Tanaka ,  Satoshi Tamabuchi ,  Yoshiyuki Iwasaki

IPC分类号： B32B516

CPC分类号： B01J20/28026 ,  A61L15/18 ,  A61L15/24 ,  A61L15/60 ,  B01J20/26 ,  B01J20/28004 ,  B01J20/28011 ,  B01J20/28016 ,  B01J20/28021 ,  B01J20/28028 ,  B01J20/28033 ,  B01J20/28057 ,  B01J2220/44 ,  B01J2220/46 ,  Y10S428/903 ,  Y10S428/913 ,  Y10T428/253 ,  Y10T442/621 ,  Y10T442/678 ,  C08L31/04 ,  C08L33/04 ,  C08L27/06 ,  C08L33/20

摘要： An absorbent composition is produced by drying a mixture obtained by mixing a micro-filler (B) with a hydrogel having a water absorptive resin (A) and water. The hydrogel is produced by performing polymerization to produce the resin (A) and not drying the resin (A) after the polymerization. The absorbent composition has a specific surface area at least 10% lager than that of a reference composition produced by drying the hydrogel without the micro-filler (B).

摘要翻译： 通过将通过将微填料（B）与具有吸水性树脂（A）的水凝胶和水混合而获得的混合物干燥来制备吸收剂组合物。 水凝胶是通过进行聚合以制备树脂（A）并且在聚合后不干燥树脂（A）而制备的。 吸收剂组合物的比表面积比通过干燥不含微填料（B）的水凝胶制备的参考组合物的比表面积至少大10％。

公开(公告)号：US5825820A

公开(公告)日：1998-10-20

申请号：US264616

申请日：1994-06-23

申请人： Yoshio Urabe ,  Shouichi Koga ,  Hitoshi Takai ,  Koji Kai ,  Hidetoshi Yamasaki

发明人： Yoshio Urabe ,  Shouichi Koga ,  Hitoshi Takai ,  Koji Kai ,  Hidetoshi Yamasaki

IPC分类号： H03G3/30 ,  H04L25/03 ,  H04L27/20 ,  H04L27/36 ,  H04L27/00

CPC分类号： H03G3/3089 ,  H03G3/3047 ,  H04L25/03859 ,  H04L27/2067 ,  H04L27/362

摘要： In the transmitter which carries out burst transmission using information data as a packet, if the status is divided into four modes, namely, burst stop mode, burst rising mode, burst continuous mode, and burst falling mode, a waveform shaping equipment designed to read out shaped waveform data for each mode from outputs of either of the two memory tables, the first memory table which holds waveform data for specific data patterns used in common in burst rising mode and burst falling mode and the second memory table which holds waveform data for all data patterns used in the burst continuous mode, or a waveform shaping equipment comprising the third memory table which holds waveform data corresponding to all the data patterns used in the burst rising mode and the fourth memory table which holds waveform data corresponding to all data patterns used in the burst falling mode and generating shaped waveform data by synthesizing the two outputs of the third and the fourth memory tables at the time of burst continuous mode.

公开(公告)号：US5617374A

公开(公告)日：1997-04-01

申请号：US489276

申请日：1995-06-09

申请人： Shinichiro Ohmi ,  Hitoshi Takai ,  Yoshio Urabe

发明人： Shinichiro Ohmi ,  Hitoshi Takai ,  Yoshio Urabe

IPC分类号： H04L7/00 ,  H04L7/02 ,  H04L7/027 ,  H04L7/033 ,  H04L7/10 ,  G04B47/00 ,  H03K5/13

CPC分类号： H04L7/0331

摘要： A time window detection portion 3a outputs a time window detection pulse from a time window signal generated in a time window generating portion 2a and a zero-cross detection pulse detected in a zero-cross detection portion 1a. First and second phase storage portions 4a and 5a store output phase values of a phase counter 22 for different times as first and second phase values, respectively. A center phase computing portion 6a computes a first center phase value from the first and second phase values and a center phase storage portion 7a stores the first center phase value of the last time as a second center phase value. An approximation detection portion 8a determines whether the first and second center phase values are approximate or not and outputs an approximation detection pulse when they approximate. A frequency determination portion 20 determines whether a data signal is included in the input signal or not on the basis of frequency of detection of the approximation detection pulse with respect to the zero-cross detection pulse computed in a frequency computing portion 17.

摘要翻译： 时间窗检测部分3a从在时间窗产生部分2a中产生的时间窗信号和在零交叉检测部分1a中检测的过零检测脉冲输出时间窗检测脉冲。 第一和第二相位存储部分4a和5a分别将相位计数器22的输出相位值分别作为第一和第二相位值。 中心相位计算部分6a根据第一和第二相位值计算第一中心相位值，并且中心相位存储部分7a将最后一次的第一中心相位值存储为第二中心相位值。 近似检测部分8a确定第一和第二中心相位值是否近似，并且当它们近似时输出近似检测脉冲。 频率确定部分20基于在频率计算部分17中计算的过零检测脉冲的检测频率来确定数据信号是否包括在输入信号中。

公开(公告)号：US5454012A

公开(公告)日：1995-09-26

申请号：US227111

申请日：1994-04-13

申请人： Hitoshi Takai ,  Yoshio Urabe ,  Hidetoshi Yamasaki

发明人： Hitoshi Takai ,  Yoshio Urabe ,  Hidetoshi Yamasaki

IPC分类号： H04B14/06 ,  H04L27/18 ,  H04L27/20 ,  H04L27/04

CPC分类号： H04L27/18

摘要： A digital signal transmission device for transmitting a signal generated by modulating a carrier wave according to a binary or M-ary data sequence. Such device comprises a differentially encoding unit for converting the original data sequence into a transmission data sequence, a waveform generation unit for.degree. generating a phase transition waveform in each time slot which corresponds to each data included in the transmission data sequence, and a modulation unit for modulating the carrier wave according to a signal which has the phase transition waveform generated by the waveform generation unit. The information to be transmitted is present in a difference between two data which are spaced form each other by a prescribed time slots. The phase transition waveform includes a center part and a connection part for linking the center parts in adjacent time slots where a phase transition waveform in the center part of a present time slot is generated according to a corresponding data, then a phase transition waveform in the connection part is generated to continue on the phase transition waveform in the center parts of time slots succeeding to and preceding the present time slot without having a discontinuity even at the linking point.

摘要翻译： 一种数字信号传输装置，用于发送根据二进制或多元数据序列调制载波产生的信号。 这种装置包括用于将原始数据序列转换成发送数据序列的差分编码单元，用于在与发送数据序列中包括的每个数据相对应的每个时隙中产生相位变化波形的DEG的波形生成单元和调制单元 用于根据具有由波形生成单元生成的相变波形的信号来调制载波。 要发送的信息以彼此间隔开规定时隙的两个数据之间的差异存在。 相变波形包括中心部分和连接部分，用于根据相应的数据链接当前时隙的中心部分中的相位变化波形的相邻时隙中的中心部分，然后在 生成连接部分，以便在当前时隙之前和之前的时隙的中心部分的相位转变波形上继续，而不会在连接点处具有不连续性。

公开(公告)号：US5384368A

公开(公告)日：1995-01-24

申请号：US201234

申请日：1994-02-24

申请人： Masashi Date ,  Takashi Sumiya ,  Hitoshi Takai

发明人： Masashi Date ,  Takashi Sumiya ,  Hitoshi Takai

IPC分类号： C08F8/30 ,  A61L15/60 ,  B01J20/26 ,  C08G81/00 ,  C08K5/3412 ,  C08L101/00

CPC分类号： B01J20/26 ,  A61L15/60

摘要： The present invention relates to a process for producing water absorbent resin comprising a step of adding a high-molecular crosslinking agent which has at least 2 azetidinium salt groups in the molecule and has at least 1000 weight-average molecular weight to the water absorbent resin paticles having carboxylic groups and carboxylic acid salt groups and a step of efficiently crosslinking the vicinity of the surface of the water absorbent resin particles. In the process for producing water absorbent resin according to the present invention, the use of high-molecular crosslinking agent achieves less permeation of the crosslinking agent into the water absorbent resin particles and enables efficient crosslinking of the vicinity of the surface of the water absorbent resin particles. Consequently, the water absorbent resin having high water absorbency both under pressure-free state and under loading can be manufactured. Because the crosslinking agent contains a large amount of azetidinium salt groups highly reactive to carboxylic acid groups or carboxylic acid salt groups in the molecule, the water absorbent resin having high crosslinking efficiency, good safety, and good flowability can be manufactured.

摘要翻译： 本发明涉及一种生产吸水性树脂的方法，其包括在分子中加入至少具有2个氮杂环丁烷鎓盐基并且具有至少1000重量平均分子量的高分子交联剂的步骤， 具有羧基和羧酸盐基团以及有效地交联吸水性树脂颗粒表面附近的步骤。 在本发明的吸水性树脂的制造方法中，使用高分子交联剂使交联剂在吸水性树脂粒子中的渗透性降低，能够使吸水性树脂表面附近的高效交联 粒子。 因此，可以制造在无压力状态和负载下都具有高吸水性的吸水性树脂。 由于交联剂含有大量与分子中的羧酸基团或羧酸盐基团反应性高的氮杂环丁烷鎓盐基，所以可以制造交联效率高，安全性好，流动性良好的吸水性树脂。