公开(公告)号：US06967995B1

公开(公告)日：2005-11-22

申请号：US09430501

申请日：1999-10-29

申请人： Dongming Hwang ,  Robert John Schule ,  Malcolm Scott Ware ,  Hua Ye

发明人： Dongming Hwang ,  Robert John Schule ,  Malcolm Scott Ware ,  Hua Ye

IPC分类号： H04L5/16 ,  H04M11/06

CPC分类号： H04M11/066 ,  H04L43/16

摘要： Methods, systems and computer program products are provided which utilize a variable threshold for carrier drop detection. The carrier drop detection threshold is updated based on a recognized data sequence contained within the signal received by the modem. The received signal is demodulated to obtain the signal data and an updated threshold is latched when a desired data sequence is recognized in the demodulated data. Accordingly, the threshold may be updated and set as an offset from or a percentage of the carrier signal level at the time of receipt of the desired data sequence. For example, in a V.90 modem using a V.8 phase 1 sequence, receipt of the CM signal (for the answer modem) or the JM signal (for the call modem) may be used to latch an updated level for the carrier drop detection threshold, which may then be used for detecting carrier drop during the silence transmission at the end of phase 1 to allow reliable preparation of the modem for receipt of the INFO0 signal at the start of phase 2.

摘要翻译： 提供了方法，系统和计算机程序产品，其利用用于载波掉落检测的可变阈值。 基于由调制解调器接收的信号中包含的识别数据序列来更新载波丢失检测阈值。 解调接收到的信号以获得信号数据，并且当在解调数据中识别期望的数据序列时，锁存更新的阈值。 因此，可以更新阈值并将其设置为在接收期望数据序列时与载波信号电平的偏移量或百分比。 例如，在使用V.8阶段1序列的V.90调制解调器中，可以使用CM信号（用于应答调制解调器）或JM信号（对于呼叫调制解调器）的接收来锁存用于载波的更新级别 丢失检测阈值，其可以用于在相位1结束时的静音传输期间检测载波丢失，以允许在阶段2开始时可靠地准备用于接收INFO0信号的调制解调器。

公开(公告)号：US06757325B1

公开(公告)日：2004-06-29

申请号：US09430698

申请日：1999-10-29

申请人： Youssef Abdelilah ,  Gordon Taylor Davis ,  Ajay Dholakia ,  Dongming Hwang ,  Fredy D. Neeser ,  Robert John Schule ,  Malcolm Scott Ware ,  Hua Ye

发明人： Youssef Abdelilah ,  Gordon Taylor Davis ,  Ajay Dholakia ,  Dongming Hwang ,  Fredy D. Neeser ,  Robert John Schule ,  Malcolm Scott Ware ,  Hua Ye

IPC分类号： H04L516

CPC分类号： H04L25/4927

摘要： Methods, modems and computer program products for detecting whether a remote modem is of a particular design type and for adjusting the communication configuration for a communication session based on a type of the remote modem. The modem type is recognized based on a knowledge that the modem design of certain manufacturers has a unique associated data pattern contained within the startup communication sequence which is not specified by the protocol but which can be demodulated and detected to thereby recognize that the remote modem is a particular manufacturer's design type. Based on knowledge of the characteristics of the remote modem design, various steps are taken which may improve performance of the communication connection in light of the particular modem design's characteristics. For example, a different Total Harmonic Distortion (THD) threshold may be used for falling back to V.34 communications when the remote modem design only supports up to 2 look ahead for spectrum shaping.

摘要翻译： 用于检测远程调制解调器是否是特定设计类型的方法，调制解调器和计算机程序产品，以及用于基于远程调制解调器的类型来调整通信会话的通信配置。 基于知道某些制造商的调制解调器设计具有包含在启动通信序列内的唯一关联数据模式的知识，可以识别调制解调器类型，该数据模式不是由协议规定的，而是可以被解调和检测，从而识别远程调制解调器 特定制造商的设计类型。 基于对远程调制解调器设计的特征的了解，采取了各种步骤，可以根据特定的调制解调器设计的特性改善通信连接的性能。 例如，当远程调制解调器设计仅支持最多2个前进用于频谱整形时，可以使用不同的总谐波失真（THD）阈值来回退到V.34通信。

公开(公告)号：US07308652B2

公开(公告)日：2007-12-11

申请号：US09877482

申请日：2001-06-08

申请人： Dawn Ashley Comfort ,  Robert John Schule

发明人： Dawn Ashley Comfort ,  Robert John Schule

IPC分类号： G06F3/00 ,  G06F9/00 ,  G06F17/00

CPC分类号： G06F21/31 ,  G06F3/04886

摘要： A keyboard graphic is displayed on a touch-sensitive display screen of a computing system when it is determined that a password should be entered, so that the password can be entered by touching individual spaces within the keyboard graphic. The keyboard graphic may be thus displayed several times during the operation of the system, including following a predetermined period in which no user input is made to the computing system, under control of a subroutine operating as a screen saver subroutine.

摘要翻译： 当确定要输入密码时，键盘图形显示在计算系统的触敏显示屏上，以便通过触摸键盘图形内的各个空格来输入密码。 在系统的操作期间，包括在作为屏幕保护程序子程序操作的子程序的控制下，包括跟随在计算系统中不进行用户输入的预定时段，可以显示键盘图形。

公开(公告)号：US06823004B1

公开(公告)日：2004-11-23

申请号：US09430097

申请日：1999-10-29

申请人： Youssef Abdelilah ,  Gordon Taylor Davis ,  Jeffrey Haskell Derby ,  Ajay Dholakia ,  Michelle Chan Granholm ,  Dongming Hwang ,  Fredy D. Neeser ,  Robert John Schule ,  Malcolm Scott Ware ,  Hua Ye ,  Charles Robert Young

发明人： Youssef Abdelilah ,  Gordon Taylor Davis ,  Jeffrey Haskell Derby ,  Ajay Dholakia ,  Michelle Chan Granholm ,  Dongming Hwang ,  Fredy D. Neeser ,  Robert John Schule ,  Malcolm Scott Ware ,  Hua Ye ,  Charles Robert Young

IPC分类号： H04B138

CPC分类号： G06F11/3485 ,  H04M11/066 ,  H04W24/00 ,  H04W48/16 ,  H04W76/10

摘要： Methods, systems and computer program products are provided for monitoring performance of a modem which obtain diagnostic data directly from memory associated with the modem's digital signal processor (DSP). A secondary path to the DSP memory is utilized for the monitoring operations so that real time data can be obtained during connection startup procedures and during an active connection. First-in first-out (FIFO) buffers are incorporated in the DSP memory to track state transitions of one or more of the state machines within the modem and various performance data measurements may be obtained directly from the DSP memory responsive to different state transition events. The real time collected data may be stored in a file and provided to a remote location for use in diagnosing customer problems with specific customer line connections. Accordingly, real time monitoring of digital and analog line conditions and modem performance may be utilized to diagnose problems with modems and line connections.

摘要翻译： 提供了方法，系统和计算机程序产品，用于监视直接从与调制解调器的数字信号处理器（DSP）相关联的存储器获取诊断数据的调制解调器的性能。 利用DSP存储器的辅助路径进行监视操作，以便在连接启动过程期间和在主动连接期间可以获得实时数据。 先进先出（FIFO）缓冲器被并入DSP存储器中以跟踪调制解调器内的一个或多个状态机的状态转换，并且可以响应于不同的状态转换事件从DSP存储器直接获得各种性能数据测量 。 实时收集的数据可以存储在文件中并提供给远程位置以用于诊断具有特定客户线路连接的客户问题。 因此，可以利用数字和模拟线路条件和调制解调器性能的实时监测来诊断调制解调器和线路连接的问题。