公开(公告)号：US20010026582A1

公开(公告)日：2001-10-04

申请号：US09811585

申请日：2001-03-20

Applicant: MATSUSHITA GRAPHIC COMMUNICATION SYSTEMS, INC.

Inventor： Nobuhiko Noma ,  Mikio Mizutani ,  Toshiyuki Ougi

IPC: H04L005/16

CPC classification number: H04L27/2662 ,  H04L27/2607 ,  H04L27/2666 ,  H04L27/2678

Abstract: The present invention calculates a product of the present sampling data by the sampling data 1 data unit ahead through multiplier 14, adds up product values calculated for every sampling by going back to the time point 1 data unit ahead through adder 16 and detects a reference timing with regard to a CP signal using the addition value.

Abstract translation: 本发明通过乘法器14，通过采样数据1数据单元计算当前采样数据的乘积，将通过加法器16返回到前一时间点1数据单元的每个采样计算的乘积值相加，并检测基准定时 关于使用加法值的CP信号。

公开(公告)号：US20030055988A1

公开(公告)日：2003-03-20

申请号：US10183475

申请日：2002-06-28

Applicant: MATSUSHITA GRAPHIC COMMUNICATION SYSTEMS, INC.

Inventor： Nobuhiko Noma ,  Tatsuo Imai ,  Keiichi Tomita

IPC: G06F015/16

CPC classification number: H04L5/1446

Abstract: A communication control method detects whether an opposing apparatus is capable of performing an abbreviated procedure during a handshake step, declares an initiation of the abbreviated procedure if the opposing apparatus is capable of performing the abbreviated procedure, omits a negotiation prior to transmitting a MEDLEY signal, allows a remote side to transmit capacity information and reception result once to a center side after exchanging the MEDLEY signal, and further allows the center side to transmit the final capacity and transmission speed information to the remote side, in order to complete the initialization sequence.

Abstract translation: 通信控制方法检测相对装置是否能够在握手步骤中执行缩短的过程，如果相对的装置能够执行缩写的过程，则声明缩短的过程的启动，在发送MEDLEY信号之前省略协商， 允许远程侧在交换MEDLEY信号之后将容量信息和接收结果一次发送到中心侧，并且还允许中心侧向远端发送最终容量和传输速度信息，以便完成初始化序列。

公开(公告)号：US20010048717A1

公开(公告)日：2001-12-06

申请号：US09861709

申请日：2001-05-22

Applicant: MATSUSHITA GRAPHIC COMMUNICATION SYSTEMS, INC.

Inventor： Toshiyuki Ougi ,  Mikio Mizutani ,  Nobuhiko Noma

IPC: H03K005/159 ,  H03H007/30 ,  H03H007/40

CPC classification number: H04L25/03012 ,  H04L2025/03414 ,  H04L2025/03471 ,  H04L2025/03617

Abstract: A training circuit for training a tap coefficient of an adaptive equalizer that performs error calculations in a training process and updating of the tap coefficient in a time area and thereby makes the tap coefficient converge stably in a short time.

Abstract translation: 一种训练电路，用于训练在训练处理中执行误差计算的自适应均衡器的抽头系数，并且在时间区域中更新抽头系数，从而使抽头系数在短时间内稳定地收敛。

公开(公告)号：US20030053530A1

公开(公告)日：2003-03-20

申请号：US10126680

申请日：2002-04-22

Applicant: MATSUSHITA GRAPHIC COMMUNICATION SYSTEMS, INC.

Inventor： Nobuhiko Noma ,  Keiichi Tomita ,  Tatsuo Imai

IPC: H04B001/38 ,  H04L005/16

CPC classification number: H04L5/1446 ,  H04L27/2614

Abstract: A center and remote sides are connected via a line and perform an initialization sequence to set a transmission speed and to detect gain characteristics of a signal received during the initialization sequence at both sides. Both center and remote sides then inform each other of the detected gain characteristics and correct gain characteristics of future transmission signals based on the informed gain characteristics. Therefore, it is possible for a sender side to perform a gain correction that raises gain amounts of transmission signals according to a decay rate, and for a receiver side to maintain the reception level, which is more than a predetermined value, thereby providing a high-speed data rate.

Abstract translation: 中心和远端通过线路连接并执行初始化序列以设置传输速度并检测在两侧的初始化序列期间接收的信号的增益特性。 中心和远端两者之间通过检测到的增益特性相互通知，并根据通知的增益特性修正未来传输信号的增益特性。 因此，发送方有可能进行根据衰减速率提高发送信号的增益量的增益校正，并且对于接收机侧来维持大于预定值的接收电平，从而提供高 速率数据速率。

公开(公告)号：US20020196874A1

公开(公告)日：2002-12-26

申请号：US10140161

申请日：2002-05-08

Applicant: MATSUSHITA GRAPHIC COMMUNICATION SYSTEMS INC.

Inventor： Keiichi Tomita ,  Nobuhiko Noma ,  Tatsuo Imai

IPC: H04L027/06

CPC classification number: H04L27/2647

Abstract: A maximum amount searcher searches maximum carrier energy amount, among the energy amounts of multiple carriers that comprise REVERB signals, and a main controller performs a gain control to bring the maximum energy amount to a target gain amount. At the same time, the same gain control for the maximum energy amount is performed for other carrier energy amounts across the board.

Abstract translation: 最大量搜索器在包括REVERB信号的多个载波的能量之中搜索最大载波能量，并且主控制器执行增益控制以使最大能量量达到目标增益量。 同时，对于其他载波能量，对于最大能量量进行相同的增益控制。

公开(公告)号：US20030048835A1

公开(公告)日：2003-03-13

申请号：US10128566

申请日：2002-04-24

Applicant: Matsushita Graphic Communication Systems, Inc.

Inventor： Nobuhiko Noma ,  Keiichi Tomita ,  Tatsuo Imai

IPC: H04B001/38

CPC classification number: H04L5/0007 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/1438

Abstract: A control monitors communication status during a data communication and determines a re-initialization is necessary in the current communication status. If the re-initialization is necessary, a pre-selected sub-carrier topology is inverted to request the re-initialization to an ADSL modem apparatus, which is installed by a central system. Upon receiving a reply to the re-initialization request from the ADSL modem apparatus, the re-initialization is performed after an expiration of a predetermined time period.

Abstract translation: 控制在数据通信期间监视通信状态，并且确定在当前通信状态中需要重新初始化。 如果需要重新初始化，则预选择的子载波拓扑被反转以请求对由中央系统安装的ADSL调制解调器装置的重新初始化。 在接收到来自ADSL调制解调设备的重新初始化请求的回复之后，在预定时间段期满之后执行重新初始化。

公开(公告)号：US20030005370A1

公开(公告)日：2003-01-02

申请号：US10145880

申请日：2002-05-16

Applicant: Matsushita Graphic Communication Systems, Inc.

Inventor： Keiichi Tomita ,  Nobuhiko Noma ,  Tatsuo Imai

IPC: H03M013/00

CPC classification number: H04L1/206 ,  H04L27/2647

Abstract: In multi-carrier communication, error amounts, which are deviations between the coordinate points of eye patterns detected from actual reception signals of each sub-carrier, and the target coordinate points of eye patterns from the reception signals are calculated by an eye pattern display controller and displayed on an oscilloscope.

Abstract translation: 在多载波通信中，通过眼图显示控制器计算作为从每个子载波的实际接收信号检测的眼图的坐标点与来自接收信号的目标坐标点之间的偏差的误差量 并显示在示波器上。