公开(公告)号：US06879644B1

公开(公告)日：2005-04-12

申请号：US09153810

申请日：1998-09-15

申请人： Jeremiah M. Jeffress

发明人： Jeremiah M. Jeffress

IPC分类号： H04L25/06

CPC分类号： H04L25/061

摘要： A method of automatically determining a peak level of a signal propagated on a carrier medium, such as for example POTS wiring, includes detecting a traversal of a noise threshold level by a data signal. The noise threshold level is determined relative to a noise floor. A determination is then made as to whether the data signal traverses a peak level within a predetermined time interval after the detection of the traversal of the noise threshold level. The peak level is then varied in accordance with the determination of whether the data signal traversed the peak level within the predetermined time interval. For example, should the data signal not traversed the peak level within the predetermined time interval, the peak level may be lowered. Alternatively, should the data signal traversed the peak level within the predetermined time interval, the peak level may be raised.

摘要翻译： 自动确定在载体介质（例如POTS布线）上传播的信号的峰值电平的方法包括通过数据信号检测噪声阈值电平的遍历。 噪声阈值水平相对于本底噪声确定。 然后，在检测到噪声阈值电平的遍历之后，确定数据信号是否在预定时间间隔内穿过峰值电平。 然后根据在预定时间间隔内数据信号是否经过峰值电平的确定来改变峰值电平。 例如，如果数据信号在预定时间间隔内未经过峰值电平，则峰值电平可能降低。 或者，如果数据信号在预定时间间隔内经过峰值电平，则可以提高峰值电平。

公开(公告)号：US06735217B1

公开(公告)日：2004-05-11

申请号：US09153635

申请日：1998-09-15

申请人： Harold H. Webber, Jr. ,  Jeremiah M. Jeffress ,  Matthew Taylor

发明人： Harold H. Webber, Jr. ,  Jeremiah M. Jeffress ,  Matthew Taylor

IPC分类号： H04L12413

CPC分类号： H04L12/40032 ,  H04L12/413

摘要： A method and apparatus for detecting a collision between signal transmissions on a carrier medium, such as UTP wiring, are described. The method commences with the transmission of an identifier from a transmitter of a network device. The transmitted identifier has a predetermined duration and includes a pulse at a temporal location within the transmitted identifier specific thereto. A identifier is also received at a receiver of the network device. The received identifier also has a predetermined duration, and includes a pulse at a temporal location therein. A determination is then made as to whether the temporal location of the pulse within the received identifier corresponds to the temporal location of the pulse within the transmitted identifier. If not, a collision is detected on the network.

摘要翻译： 描述了用于检测诸如UTP布线之类的载体介质上的信号传输之间的冲突的方法和装置。 该方法开始于从网络设备的发射机发送标识符。 所发送的标识符具有预定的持续时间，并且包括在所发送的标识符中的时间位置处的脉冲。 还在网络设备的接收机处接收标识符。 所接收的标识符也具有预定的持续时间，并且包括其中的时间位置处的脉冲。 然后确定接收的标识符内的脉冲的时间位置是否对应于所发送的标识符内的脉冲的时间位置。 如果没有，则在网络上检测到冲突。

公开(公告)号：US06292517B1

公开(公告)日：2001-09-18

申请号：US09153305

申请日：1998-09-15

申请人： Jeremiah M. Jeffress ,  Marc A. Loyer

发明人： Jeremiah M. Jeffress ,  Marc A. Loyer

IPC分类号： H04L2549

CPC分类号： H04L25/062

摘要： A method of detecting signals propagated on a carrier medium includes the step of determining a noise threshold level, relative to a noise floor on a carrier medium, such as for example POTS wiring. A peak threshold level is then determined relative to peaks of a data signal. A data threshold level is then calculated utilizing the noise threshold level and the peak threshold level. For example, the noise threshold level and the peak threshold level may be averaged to calculate the data threshold level. A data signal pulse is then detected on traversal of the data threshold level by the data signal.

摘要翻译： 检测在载体介质上传播的信号的方法包括相对于载波介质上的噪声本底（例如POTS布线）确定噪声阈值电平的步骤。 然后相对于数据信号的峰值确定峰值阈值水平。 然后使用噪声阈值电平和峰值阈值电平计算数据阈值电平。 例如，可以对噪声阈值电平和峰值阈值电平进行平均以计算数据阈值电平。 然后通过数据信号遍历数据阈值电平来检测数据信号脉冲。

公开(公告)号：US06879645B1

公开(公告)日：2005-04-12

申请号：US09153811

申请日：1998-09-15

申请人： Harold H. Webber, Jr. ,  Jeremiah M. Jeffress

发明人： Harold H. Webber, Jr. ,  Jeremiah M. Jeffress

IPC分类号： H04L1/20 ,  H04L25/06 ,  H04L25/08

CPC分类号： H04L25/08 ,  H04L1/20 ,  H04L25/061

摘要： A method of dynamically, and automatically, varying the sensitivity of a receiver coupled to receive signals on a carrier medium, such as for example POTS wiring, includes the step of detecting whether more than a predetermined number of noise events, such as for example traversals of a noise threshold level, occur within a predetermined time. If the predetermined number of noise events occur, the sensitivity of the receiver is automatically varied by a predetermined increment. For example, the noise threshold level may be raised by a predetermined voltage to vary the sensitivity of the receiver.

摘要翻译： 动态地并且自动地改变耦合到载波介质上的接收信号的接收机（例如POTS布线）的灵敏度的方法包括检测是否超过预定数量的噪声事件的步骤，例如遍历 的噪声阈值电平发生在预定时间内。 如果发生预定数量的噪声事件，则接收机的灵敏度自动变化预定的增量。 例如，噪声阈值电平可以提高预定电压以改变接收机的灵敏度。