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1. 发明授权

US06295313B1 Method for controlling modem 失效
标题翻译：控制调制解调器的方法
公开(公告)号：US06295313B1
公开(公告)日：2001-09-25
申请号：US09117177
申请日：1998-07-29
申请人： Nobuhiko Noma , Mitsuhiro Araki
发明人： Nobuhiko Noma , Mitsuhiro Araki
IPC分类号： H04B138
CPC分类号： H04L1/0004 , H04L1/001 , H04L1/003 , H04L5/1446 , H04M11/06 , H04N1/33323 , H04N2201/3335 , H04N2201/33371 , Y02D50/10
摘要： When the present modem control apparatus detects that the receive level of a probing signal in phase 2 of the pre-communication procedure or a tone signal with a specific frequency in phase 2 of the pre-communication procedure is lower than a prescribed value, it sets the transmission rate of the control channel to a low rate of 1200 bps. In this case, the modem control apparatus sets the transmission rate to 1200 bps through a prescribed bit of the MPh signal in the communication control procedure and performs the setting that will not permit communications with the answer modem at different transmission rates, through the second prescribed bit of said MPh signal, and notifies those settings to the answer modem, thus carrying out communications at a lower transmission rate.
摘要翻译：当本调制解调器控制装置检测到预通信过程的阶段2中的探测信号的接收电平或具有预通信过程的阶段2中的特定频率的音调信号的接收电平低于规定值时，其设置控制通道的传输速率为1200bps的低速率。在这种情况下，调制解调器控制装置在通信控制程序中通过MPh信号的指定位将发送速率设置为1200bps，并且执行不允许以不同传输速率与应答调制解调器通信的设置，通过第二规定所述MPh信号的位，并将这些设置通知给应答调制解调器，从而以较低的传输速率进行通信。

2. 发明授权

US07006261B1 Modulator and demodulator (MODEM) 失效
公开(公告)号：US07006261B1
公开(公告)日：2006-02-28
申请号：US09458882
申请日：1999-12-10
申请人： Mikio Mizutani , Nobuhiko Noma , Eizo Katayama , Genzo Takagi , Yoshihiro Noguchi , Mitsuhiro Araki
发明人： Mikio Mizutani , Nobuhiko Noma , Eizo Katayama , Genzo Takagi , Yoshihiro Noguchi , Mitsuhiro Araki
IPC分类号： H04N1/32
CPC分类号： H04N1/32 , H04M11/066 , H04N1/333
摘要： A MODEM can shorten the processing time of an interface disposed between a data terminal equipment (DTE) and the MODEM. The MODEM stores an object program of a procedure in a memory and switches an operational mode of the MODEM automatically corresponding to the prescribed procedure thereby executing the procedure corresponding to the current operational mode. The MODEM further comprises a timer which monitors the transits time between a completed procedure and the next procedure, and the MODEM starts the process of a specified operational mode based on a mode-setting-instruction of the procedure as well as monitoring the transitions time by using the timer, and executing a next specified operational mode when the timer times out, thereby allowing the MODEM to perform the various operational mode switches.

3. 发明申请

US20050036540A1 DSL modem apparatus and communication control method 审中-公开
标题翻译： DSL调制解调器装置和通信控制方法
公开(公告)号：US20050036540A1
公开(公告)日：2005-02-17
申请号：US10781694
申请日：2004-02-20
申请人： Nobuhiko Noma , Genzo Takagi , Motoyoshi Nagai , Mitsuhiro Araki , Akira Atsuta
发明人： Nobuhiko Noma , Genzo Takagi , Motoyoshi Nagai , Mitsuhiro Araki , Akira Atsuta
IPC分类号： H04J11/00 , H04B1/38 , H04L5/02 , H04L5/14 , H04L7/02 , H04L29/08 , H04M11/06
CPC分类号： H04L5/023 , H04L5/1469 , H04M11/06
摘要： The present invention provides a communication control method between DSL modem apparatuses mutually connected via a metallic cable. One of the DSL modem apparatuses transmits transmission data using a plurality of sub-carriers simultaneously, while the other DSL modem apparatus decodes the transmission data in the plurality of sub-carriers. The both sides of DSL modem apparatuses exchange data signals by mutually synchronizing and alternatively sharing transmission timeslots and reception timeslots, using the same range of sub-carriers. In addition, the upstream (data transmission from a remote side to a center side) uses the same range of carrier indexes that are used in the downstream (data transmission from the center side to the remote side).
摘要翻译：本发明提供了经由金属电缆相互连接的DSL调制解调装置之间的通信控制方法。 DSL调制解调装置之一同时使用多个副载波发送发送数据，而另一个DSL调制解调装置解码多个子载波中的发送数据。 DSL调制解调设备的两侧通过使用相同范围的子载波互相同步并交替地共享传输时隙和接收时隙来交换数据信号。此外，上游（从远程侧到中心侧的数据传输）使用与下游使用的相同的载波索引范围（从中心侧到远端的数据传输）。

4. 发明授权

US5661709A Digital signal detection circuit 失效
标题翻译：数字信号检测电路
公开(公告)号：US5661709A
公开(公告)日：1997-08-26
申请号：US689130
申请日：1996-07-30
申请人： Genzo Takagi , Yoshihiro Noguchi , Eizo Katayama , Mitsuhiro Araki , Yoshinori Takahashi
发明人： Genzo Takagi , Yoshihiro Noguchi , Eizo Katayama , Mitsuhiro Araki , Yoshinori Takahashi
IPC分类号： G11B20/10 , G11B7/005 , G11B20/18 , G11B7/00
CPC分类号： G11B20/10009 , G11B7/005
摘要： A digital signal detection circuit includes a threshold value calculator calculating a threshold value from assumptive sampled values corresponding to various data patterns of a regenerated signal. The regenerated signal is obtained by regenerating data recorded on a recording medium by a regenerating head. The detection circuit also includes a Viterbi decoder carrying out Viterbi decoding of the regenerated signal with the threshold value determined by the threshold value calculator as a constant. The threshold value calculator variably controls the threshold value using a decoded output of the Viterbi decoder and a regenerated signal corresponding to the decoded output of the Viterbi decoder.
摘要翻译：数字信号检测电路包括阈值计算器，从对应于再生信号的各种数据模式的假设采样值计算阈值。再生信号通过再生由再生头重新记录在记录介质上的数据而获得。该检测电路还包括一个维特比解码器，其将由该阈值计算器确定的阈值的再生信号进行维特比译码，作为常数。阈值计算器使用维特比解码器的解码输出和对应于维特比解码器的解码输出的再生信号来可变地控制阈值。

5. 发明申请

US20050041729A1 DSL modem apparatus and communication control method 审中-公开
标题翻译： DSL调制解调器装置和通信控制方法
公开(公告)号：US20050041729A1
公开(公告)日：2005-02-24
申请号：US10781678
申请日：2004-02-20
申请人： Nobuhiko Noma , Genzo Takagi , Motoyoshi Nagai , Mitsuhiro Araki , Akira Atsuta
发明人： Nobuhiko Noma , Genzo Takagi , Motoyoshi Nagai , Mitsuhiro Araki , Akira Atsuta
IPC分类号： H04L27/01 , H04B3/23 , H04L5/02 , H04L5/14 , H04M11/06 , H04B1/38
CPC分类号： H04L5/143 , H04B3/23 , H04L5/023 , H04M11/062
摘要： A DSL modem apparatus provided at a transmission side in an upstream performs upstream communication using carrier indexes of the same range as a downstream. During an echo canceller learning period, a transmission signal is outputted to a line, via notch filters that cut the signal at a frequency location of a PILOT signal of the downstream. An echo signal is received via notch filters and a coefficient is set by calculating from the training signal of its own apparatus and the echo signal.
摘要翻译：在上游的发送侧设置的DSL调制解调装置使用与下游相同范围的载波指标来进行上行通信。在回波消除器学习期间，通过在下游的PILOT信号的频率位置切断信号的陷波滤波器将发送信号输出到线路。通过陷波滤波器接收回波信号，并通过从其本身装置的训练信号和回波信号计算来设定系数。

6. 发明授权

US06038252A Modulator and demodulator (MODEM) 失效
标题翻译：调制解调器（MODEM）
公开(公告)号：US06038252A
公开(公告)日：2000-03-14
申请号：US107796
申请日：1998-06-30
申请人： Mikio Mizutani , Nobuhiko Noma , Eizo Katayama , Genzo Takagi , Yoshihiko Noguchi , Mitsuhiro Araki
发明人： Mikio Mizutani , Nobuhiko Noma , Eizo Katayama , Genzo Takagi , Yoshihiko Noguchi , Mitsuhiro Araki
IPC分类号： H04N1/32 , H04B1/38 , H04L13/08 , H04L29/10 , H04M11/00 , H04M11/06
CPC分类号： H04M11/06
摘要： A MODEM can shorten the processing time of an interface disposed between a data terminal equipment (DTE) and the MODEM. The MODEM stores an object program of a procedure in a memory and switches an operational mode of the MODEM automatically corresponding to the prescribed procedure thereby executing the procedure corresponding to the current operational mode. The MODEM further comprises a timer which monitors the transits time between a completed procedure and the next procedure, and the MODEM starts the process of a specified operational mode based on a mode-setting-instruction of the procedure as well as monitoring the transitions time by using the timer, and executing a next specified operational mode when the timer times out, thereby allowing the MODEM to perform the various operational mode switches.
摘要翻译：调制解调器可以缩短数据终端设备（DTE）和调制解调器之间的接口处理时间。 MODEM将过程的对象程序存储在存储器中，并根据规定的过程自动切换MODEM的操作模式，从而执行与当前操作模式对应的过程。 MODEM还包括定时器，其监视完成的过程和下一个过程之间的转换时间，并且MODEM基于过程的模式设置指令启动指定操作模式的处理，并且通过使用定时器，并且当定时器超时时执行下一个指定的操作模式，从而允许MODEM执行各种操作模式切换。

7. 发明申请

US20050041730A1 DSL modem apparatus and communication control method 审中-公开
标题翻译： DSL调制解调器装置和通信控制方法
公开(公告)号：US20050041730A1
公开(公告)日：2005-02-24
申请号：US10781690
申请日：2004-02-20
申请人： Nobuhiko Noma , Genzo Takagi , Motoyoshi Nagai , Mitsuhiro Araki , Akira Atsuta
发明人： Nobuhiko Noma , Genzo Takagi , Motoyoshi Nagai , Mitsuhiro Araki , Akira Atsuta
IPC分类号： H04J11/00 , H04B1/38 , H04B3/04 , H04L5/14 , H04L25/03 , H04L27/00 , H04L27/26 , H04L27/36
CPC分类号： H04L5/14 , H04L27/2626 , H04L27/2657
摘要： A processor executes an initialization sequence that exchanges predetermined signals prior to data communication. A complex operation circuit multiplies transmission data of a sub-carrier by gain compensation data and phase angle compensation data, which are prepared for the same sub-carrier. Therefore, modulation is done so that the multiplication results are simultaneously transmitted, by an IFFT unit, in a plurality of sub-carriers. In addition, the transmission data of a sub-carrier, during the data communication, is multiplied by gain compensation data and phase angle compensation data, which are prepared for the same sub-carrier.
摘要翻译：处理器执行在数据通信之前交换预定信号的初始化序列。复合运算电路通过对同一子载波准备的增益补偿数据和相位角补偿数据来乘以副载波的发送数据。因此，进行调制，使得乘法结果由IFFT单元在多个子载波中同时发送。此外，在数据通信期间，子载波的发送数据被乘以为同一子载波准备的增益补偿数据和相位角补偿数据。

8. 发明申请

US20050031027A1 ADSL modem apparatus and ADSL modem communication method 审中-公开
标题翻译： ADSL调制解调器装置和ADSL调制解调器通信方式
公开(公告)号：US20050031027A1
公开(公告)日：2005-02-10
申请号：US10781698
申请日：2004-02-20
申请人： Nobuhiko Noma , Genzo Takagi , Motoyoshi Nagai , Mitsuhiro Araki , Akira Atsuta
发明人： Nobuhiko Noma , Genzo Takagi , Motoyoshi Nagai , Mitsuhiro Araki , Akira Atsuta
IPC分类号： H04J11/00 , H04B1/38 , H04L12/16 , H04L29/10 , H04M11/06
CPC分类号： H04M11/062
摘要： An ADSL modem apparatus is provided that accurately obtains a communication distance to an opposing ADSL modem apparatus, and that enables ADSL communication in an area exceeding the communication distance conventionally used. In the ADSL modem apparatus, a transmitter-receiver transmits and receives a carrier specified by a communication standard in a handshake procedure, and a processor estimates a communication distance to an opposing ADSL modem apparatus in accordance with a reception level of the carrier.
摘要翻译：提供了一种ADSL调制解调器装置，其准确地获得与对方ADSL调制解调器装置的通信距离，并且能够在超过通常使用的通信距离的区域中进行ADSL通信。在ADSL调制解调器装置中，发送接收器在握手过程中发送和接收由通信标准指定的载波，并且处理器根据载波的接收电平估计到相对的ADSL调制解调设备的通信距离。

9. 发明申请

US20050025227A1 ADSL modem apparatus and communication method thereof 审中-公开
标题翻译： ADSL调制解调装置及其通信方法
公开(公告)号：US20050025227A1
公开(公告)日：2005-02-03
申请号：US10772309
申请日：2004-02-06
申请人： Nobuhiko Noma , Genzo Takagi , Motoyoshi Nagai , Mitsuhiro Araki
发明人： Nobuhiko Noma , Genzo Takagi , Motoyoshi Nagai , Mitsuhiro Araki
IPC分类号： H04J11/00 , H04B1/38 , H04L5/16 , H04L12/20 , H04M3/00 , H04M11/00 , H04M11/06
CPC分类号： H04M11/062
摘要： A processor of a transceiver estimates a communication distance to an opposing ADSL modem apparatus by detecting a reception level of a communication distance detecting signal in accordance during an initialization sequence with the ITU-T regulated G.992. 1 or G. 992.2. The communication distance detecting signal is used to detect a communication distance to an opposing ADSL modem apparatus and has comb-shaped frequency characteristics. Based on the estimated communication distance, and by referring to a table showing attenuation of signal energy (stored in a RAM), the signal energy in a high frequency band (among the signal energy assigned to transmitting signals) is concentrated into a low frequency band during the communication.
摘要翻译：收发器的处理器通过根据ITU-T规定的G.992的初始化序列检测通信距离检测信号的接收电平来估计到相对ADSL调制解调器装置的通信距离。 1或G. 992.2。通信距离检测信号用于检测与对方ADSL调制解调装置的通信距离，并具有梳状频率特性。基于估计的通信距离，通过参照表示存储在RAM中的信号能量衰减的表（高频带中的信号能量（分配给发送信号的信号能量）中的信号能量集中在低频带在沟通过程中

10. 发明申请

US20050025086A1 ADSL modem apparatus and communication method thereof 审中-公开
标题翻译： ADSL调制解调装置及其通信方法
公开(公告)号：US20050025086A1
公开(公告)日：2005-02-03
申请号：US10772308
申请日：2004-02-06
申请人： Nobuhiko Noma , Genzo Takagi , Motoyoshi Nagai , Mitsuhiro Araki , Akira Atsuta
发明人： Nobuhiko Noma , Genzo Takagi , Motoyoshi Nagai , Mitsuhiro Araki , Akira Atsuta
IPC分类号： H04J11/00 , H04L1/00 , H04L5/14 , H04L12/20 , H04L27/26 , H04L29/08 , H04B7/185
CPC分类号： H04L1/0065 , H04L1/0071 , H04L5/0007 , H04L5/0046 , H04L5/006 , H04L5/1438 , H04L27/2626 , H04L27/2647
摘要： A processor of a transceiver estimates a communication distance to an opposing ADSL modem apparatus by detecting a reception level of a REVERB signal in accordance with the ITU-T regulated G.992.1 or G. 992.2. Based on the estimated communication distance, and by referring to a table showing attenuation of signal energy (stored in a RAM), the signal energy in a high frequency band (among the signal energy assigned to transmitting signals) is concentrated into a low frequency band during the communication.
摘要翻译：收发机的处理器通过根据ITU-T规定的G.992.1或G.992.2检测REVERB信号的接收电平来估计到相对ADSL调制解调设备的通信距离。基于估计的通信距离，通过参照表示存储在RAM中的信号能量衰减的表（高频带中的信号能量（分配给发送信号的信号能量）中的信号能量集中在低频带在沟通过程中

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