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1. 发明授权

US06772388B2 Apparatus and method for providing optimal adaptive forward error correction in data communications 有权
标题翻译：用于在数据通信中提供最佳自适应前向纠错的装置和方法
公开(公告)号：US06772388B2
公开(公告)日：2004-08-03
申请号：US09731095
申请日：2000-12-06
申请人： Michael J. Cooper , Stephen Schroeder
发明人： Michael J. Cooper , Stephen Schroeder
IPC分类号： H03M1335
CPC分类号： H04L12/2801 , H03M13/35
摘要： An adaptive and dynamic forward error correction scheme for a communication channel is disclosed. The method and apparatus calculates the actual bit error rate for comparison with a target bit error rate. When a channel is performing better than required by the performance specifications, the forward error correction power can be reduced to provide greater throughput. If the calculated actual bit error rate is greater than the target bit error rate, then the forward error correction power is increased in an attempt to lower the calculated bit error rate. A feedback loop is employed to continually calculate revised bit error rates as the forward error correction power is increased or decreased.
摘要翻译：公开了一种用于通信信道的自适应和动态前向纠错方案。该方法和装置计算与目标比特误码率进行比较的实际比特误码率。当频道的性能比性能规格要求更好时，可以减少前向纠错功率以提供更大的吞吐量。如果计算出的实际误码率大于目标比特误码率，则增加前向纠错功率以试图降低计算的误比特率。当前向纠错功率增加或减小时，采用反馈回路来连续计算修正的误码率。

2. 发明授权

US5684802A System and method for hybrid contention/polling protocol collison resolution used backoff timers with polling 失效
标题翻译：用于混合竞争/轮询协议的分解解决方案的系统和方法使用轮回的退避计时器
公开(公告)号：US5684802A
公开(公告)日：1997-11-04
申请号：US434334
申请日：1995-05-02
申请人： John A. Perreault , Abhay Joshi , Mete Kabatepe , Lawrence W. Lloyd , Stephen Schroeder
发明人： John A. Perreault , Abhay Joshi , Mete Kabatepe , Lawrence W. Lloyd , Stephen Schroeder
IPC分类号： H04L12/403 , H04L12/413
CPC分类号： H04L12/413 , H04L12/403
摘要： The system and method provide for efficiently resolving collisions in an environment where a transmitting device cannot hear collisions without a headend control station/control device, i.e., master, repeating transmission of all upstream frames in the downstream direction. This invention also prevents additional collisions from occurring between a device that is retransmitting and a device that is transmitting a packet for the first time. Further, the present invention allows continued utilization of a channel by other devices while contending devices are processing collision resolution procedures.
摘要翻译：该系统和方法提供了在没有头端控制站/控制设备（即主站）在下游方向重复所有上游帧的传输的情况下，有效地解决发送设备听不到冲突的环境中的冲突。本发明还防止在重传的设备和正在第一次发送分组的设备之间发生额外的冲突。此外，本发明允许在竞争的设备正在处理冲突解决过程时由其他设备继续使用信道。

3. 发明授权

US06700875B1 System, device, and method for selecting a channel in a multichannel communication network 失效
标题翻译：用于在多信道通信网络中选择信道的系统，设备和方法
公开(公告)号：US06700875B1
公开(公告)日：2004-03-02
申请号：US09052224
申请日：1998-03-31
申请人： Stephen Schroeder , Keith M. Conger , Richard Wade , Michael Jaimie Cooper
发明人： Stephen Schroeder , Keith M. Conger , Richard Wade , Michael Jaimie Cooper
IPC分类号： H04J116
CPC分类号： H04H20/77 , H04H20/26 , H04L1/0015 , H04L1/20 , H04L1/24
摘要： In a system, device, and method for selecting a channel from among a plurality of channels, a number of available channels are selected for testing. A channel quality measurement is made for each of the number of available channels. The channel having the best channel quality measurement is then selected. To make the channel quality measurements, a primary station selects a channel to be tested and also selects a secondary station with which to perform the test. The primary station transmits a control frame to the selected secondary station, including a channel identifier identifying the selected channel. Upon receiving the control frame, the selected secondary station adjusts its transmitter to the selected channel based on the channel identifier in the control frame, and transmits a reference signal on the selected channel. Meanwhile, the primary station adjusts its receiver to the selected channel and receives the reference signal from the selected secondary station. The primary station then measures the quality of the received reference signal.
摘要翻译：在用于从多个频道中选择频道的系统，设备和方法中，选择多个可用频道用于测试。对每个可用频道进行信道质量测量。然后选择具有最佳信道质量测量的信道。为了进行信道质量测量，主站选择要测试的信道，并且还选择用于执行测试的辅助站。主站向所选择的次站发送控制帧，包括标识所选频道的信道标识符。在接收到控制帧时，所选择的副站基于控制帧中的信道标识符将其发射机调整到所选择的信道，并在所选择的信道上发送参考信号。同时，主站将其接收机调整到所选择的信道，并从所选择的副站接收参考信号。主站然后测量接收到的参考信号的质量。

4. 发明授权

US6114968A Hybrid contention/polling access method 失效
标题翻译：混合争用/轮询访问方式
公开(公告)号：US6114968A
公开(公告)日：2000-09-05
申请号：US883972
申请日：1997-06-27
申请人： Krishnan Ramakrishnan , Stephen Schroeder , John A. Perreault
发明人： Krishnan Ramakrishnan , Stephen Schroeder , John A. Perreault
IPC分类号： H04Q9/00
CPC分类号： H04L12/403 , H04L12/2801 , H04L12/2861
摘要： A system, device, and method for improving access in a hybrid contention/polling protocol maintains a list of active users, a list of recently active users, and a list of inactive users. An active user that becomes inactive is moved into the list of recently active users, and a recently active user that remains inactive is moved into the list of inactive users. A limited contention poll addressed to a number of inactive users and at least one recently active user authorizes any of the addressed users to contend for access to the shared channel. Upon detection of a collision, addressed users that are in the list of recently active users are polled individually, while the inactive users are sent a collision resolution poll which forces the inactive users to contend again for access. Users that become active are moved into the list of active users.
摘要翻译：用于改进混合竞争/轮询协议中的访问的系统，设备和方法维护活动用户的列表，最近活动用户的列表以及不活动用户的列表。变为不活动的活动用户被移动到最近活动的用户的列表中，并且保持不活动的最近活动的用户被移动到非活动用户的列表中。针对多个非活动用户和至少一个最近活动的用户的有限争用轮询授权任何被寻址的用户争取访问共享信道。在检测到冲突时，单独轮询处于最近活动用户列表中的寻址用户，而非活动用户被发送冲突解决轮询，迫使非活动用户再次争取访问。成为活动用户将被移动到活动用户列表中。

5. 发明授权

US5793307A Method and apparatus for a hybrid limited contention and polling protocol 失效
标题翻译：混合有限争用和轮询协议的方法和装置
公开(公告)号：US5793307A
公开(公告)日：1998-08-11
申请号：US437106
申请日：1995-05-05
申请人： John A. Perreault , Abhay Joshi , Mete Kabatepe , Lawrence W. Lloyd , Stephen Schroeder
发明人： John A. Perreault , Abhay Joshi , Mete Kabatepe , Lawrence W. Lloyd , Stephen Schroeder
IPC分类号： H04L12/403 , G05B23/00
CPC分类号： H04L12/4035
摘要： An apparatus and method to implement a hybrid contention and polling protocol for a communications or computer network is disclosed. Various apparatus and method embodiments of the invention employ specific polls from a primary station for polling identified secondary stations of the network which may be in an active state; limited contention polls to an identified individual secondary station which may be in an idle state or to an identified subset of a plurality of secondary stations which may be in an idle state to initiate limited contention access to the network; limited contention polls for collision resolution in the event that a plurality of secondary stations in an idle state may have simultaneously contended for network access; general polls to any of a plurality of secondary stations of the network which may be in an unresponsive state to initiate contention access to the network; and general polls for collision resolution in the event that a plurality of secondary stations may simultaneously contend for network access. Various embodiments may also include frequency channel allocation for transmission and reception of data and other information within the network.
摘要翻译：公开了一种用于实现通信或计算机网络的混合争用和轮询协议的装置和方法。本发明的各种装置和方法实施例使用来自主站的特定轮询来轮询可能处于活动状态的网络的所识别的次站; 有限争用轮询到可能处于空闲状态的识别的个人次站或者可能处于空闲状态以发起对网络的有限争用访问的多个次站的已识别子集; 在空闲状态下的多个次站可能同时争夺网络访问的情况下，进行冲突解决的有限争用轮询; 一般轮询到可能处于无响应状态的网络的多个次站中的任何一个以发起对网络的竞争接入; 以及在多个次站可以同时竞争网络访问的情况下的冲突解决的一般轮询。各种实施例还可以包括用于数据和网络内的其他信息的发送和接收的频率信道分配。

6. 发明授权

US5651009A System and method for hybrid contention/polling protocol collision resolution using a depth first search technique 失效
标题翻译：使用深度优先搜索技术的混合竞争/轮询协议冲突解决的系统和方法
公开(公告)号：US5651009A
公开(公告)日：1997-07-22
申请号：US433876
申请日：1995-05-02
申请人： John A. Perreault , Abhay Joshi , Mete Kabatepe , Lawrence W. Lloyd , Stephen Schroeder
发明人： John A. Perreault , Abhay Joshi , Mete Kabatepe , Lawrence W. Lloyd , Stephen Schroeder
IPC分类号： H04L12/403 , H04L12/413
CPC分类号： H04L12/413 , H04L12/403
摘要： A method and system provide efficient resolution of transmission collisions in a simultaneous channel access communication environment. At least a first Master device and a plurality of Slave devices utilize the steps of: (1) transmitting, by the plurality of Slave devices upon receiving a contention poll from the first Master device, information to the Master device, wherein transmissions of the Slave devices provide a collision; (2) selecting a subset of Slaves allowed to retransmit following the collision, by the first Master device using a collision resolution poll in accordance with a predetermined depth first tree search technique; and (3) retransmitting, by the subset of Slave devices, the information to the Master device, and, where another collision is obtained, recycling to step 2 and repeating steps 2 and 3 until all collisions are resolved.
摘要翻译：一种方法和系统在同时的信道接入通信环境中提供传输冲突的有效分辨率。至少第一主设备和多个从设备利用以下步骤：（1）在从第一主设备接收到竞争轮询时，由多个从设备发送到主设备的信息，其中从设备的传输设备提供冲突; （2）根据预定的深度第一树搜索技术，通过第一主设备使用冲突解决轮询来选择允许在冲突之后重传的从站的子集; 并且（3）由Slave设备的子集重新发送到主设备的信息，并且在获得另一个冲突的情况下再循环到步骤2并重复步骤2和3，直到所有的冲突被解决为止。

7. 发明授权

US5274697A Automatic data restoral for modems 失效
标题翻译：自动数据恢复调制解调器
公开(公告)号：US5274697A
公开(公告)日：1993-12-28
申请号：US20897
申请日：1993-02-22
申请人： Stephen Schroeder , Manickam R. Sridhar
发明人： Stephen Schroeder , Manickam R. Sridhar
IPC分类号： H04B1/74 , H04M11/06 , H04M11/00
CPC分类号： H04B1/74 , H04M11/06
摘要： Automatically restoring data transmission by monitoring line degradation and switching to a new line (or lines) when line quality falls below a prescribed standard. Data transmission is maintained on the leased line while communication is being established on the dial line, so as not to disrupt data transmission; communication is established across two dial lines to restore full-duplex transmission; energy is maintained on the dial lines at times when data is not being transmitted to prevent a change of channel on a dial line; a signal processor, associated memory, and analog interface circuitry provide the data restoral functions; control of the restoral procedure is handled by one modem (e.g., the calling modem), and commands are sent to the other modem over either the leased or dial lines.
摘要翻译：当线路质量低于规定标准时，通过监控线路衰退并切换到新线路（或线路）来自动恢复数据传输。在拨号线上建立通信时，在专线上保持数据传输，以免中断数据传输; 通信建立在两条拨号线路之间，以恢复全双工传输; 在不传输数据的情况下，在拨号线上保持能量，以防止拨号线上的频道改变; 信号处理器，相关存储器和模拟接口电路提供数据恢复功能; 由一个调制解调器（例如，呼叫调制解调器）处理对恢复过程的控制，并且通过租用或拨号线路将命令发送到另一个调制解调器。

8. 发明申请

US20050078880A1 Image warp 有权
标题翻译：图像扭曲
公开(公告)号：US20050078880A1
公开(公告)日：2005-04-14
申请号：US10684295
申请日：2003-10-10
申请人： Stephen Schroeder
发明人： Stephen Schroeder
IPC分类号： G06K9/32 , G06K9/36 , G06T3/00 , G06T7/00
CPC分类号： G06T3/0081 , G06T7/32
摘要： Methods and machine-readable mediums are disclosed for warping overlapping images. In one embodiment, the method comprises selecting a first set of points in a first image that are located in an overlap region of the first image and the second image, determining a set of tie points in the second image, each tie point correlating to a point in the first set, determining a second set of points, each point in the second set located at a position in the overlap region between a point in the first set and a tie point correlated to the point in the first set, and warping the first image and the second image by applying an algorithm using the second set of points, the algorithm to reposition at least a portion of the points in the first image and at least a portion of the points in the second image.
摘要翻译：公开了用于扭曲重叠图像的方法和机器可读介质。在一个实施例中，该方法包括选择位于第一图像和第二图像的重叠区域中的第一图像中的第一组点，确定第二图像中的一组连接点，每个连接点与在第一组中确定第二组点，第二组中的每个点位于第一组中的点与第一组中的点相关联的连接点之间的重叠区域中的位置，并且使第一图像和第二图像通过使用第二组点应用算法，所述算法重新定位第一图像中的点的至少一部分和第二图像中的点的至少一部分。

9. 发明授权

US6006017A System for determining the frequency of repetitions of polling active stations relative to the polling of inactive stations 失效
标题翻译：用于确定轮询主动站相对于非活动站的轮询的重复频率的系统
公开(公告)号：US6006017A
公开(公告)日：1999-12-21
申请号：US432749
申请日：1995-05-02
申请人： Abhay Joshi , Mete Kabatepe , Lawrence W. Lloyd , John A. Perreault , Stephen Schroeder
发明人： Abhay Joshi , Mete Kabatepe , Lawrence W. Lloyd , John A. Perreault , Stephen Schroeder
IPC分类号： H04L12/403 , G06F13/00
CPC分类号： H04L12/4035
摘要： An apparatus and method to implement a hybrid contention and polling protocol for a communications or computer network is disclosed. Various apparatus and method embodiments of the invention employ specific polls from a primary station for polling identified secondary stations of the network which may be in an active state, general polls to any of a plurality of secondary stations of the network which may be in an unresponsive state to initiate contention access to the network, and general polls for collision resolution in the event that a plurality of secondary stations may simultaneously contend for network access. Various embodiments may also include frequency channel allocation for transmission and reception of data and other information within the network. The various procedures and apparatus disclosed may also be used to apply various polling parameters to optimize network performance.
摘要翻译：公开了一种用于实现通信或计算机网络的混合争用和轮询协议的装置和方法。本发明的各种装置和方法实施例使用来自主站的特定轮询来轮询可能处于活动状态的所述网络的所识别的次站，对所述网络的多个次站中的任何一个可能处于无响应的次站状态来发起对网络的争用访问，以及在多个次站可以同时争用网络访问的情况下的冲突解决的一般轮询。各种实施例还可以包括用于数据和网络内的其他信息的发送和接收的频率信道分配。所公开的各种程序和装置也可以用于应用各种轮询参数来优化网络性能。

10. 发明授权

US5805586A Method, device and data communication system for multilink polling 失效
标题翻译：用于多链路轮询的方法，设备和数据通信系统
公开(公告)号：US5805586A
公开(公告)日：1998-09-08
申请号：US433877
申请日：1995-05-02
申请人： John A. Perreault , Abhay Joshi , Mete Kabatepe , Lawrence W. Lloyd , Stephen Schroeder
发明人： John A. Perreault , Abhay Joshi , Mete Kabatepe , Lawrence W. Lloyd , Stephen Schroeder
IPC分类号： H04L12/403 , H04L12/56
CPC分类号： H04L12/403
摘要： A control station (8) is coupled to a plurality of tributary devices (20, 16, 18) by way of at least one high speed broadcast downstream data channel and more than one shared lower speed upstream data channels. The control station (8) broadcasts data to all the tributary devices (20, 16, 18) and selects a channel for a specific tributary device (20, 16, 18) to respond to a poll. After polling, the tributary device (20, 16, 18) changes the tributary device transmitter (42) to the frequency of the selected channel. The tributary device (20, 16, 18) either sends data to send to the control station (8) or sends a negative acknowledge to the control station (8). If a negative acknowledgment was transmitted, the control station (8) notifies the control station transmitter that the channel is idle.
摘要翻译：控制站（8）通过至少一个高速广播下游数据信道和多于一个共享的较低速上行数据信道而耦合到多个支路设备（20,16,18）。控制站（8）向所有辅助设备（20,16,18）广播数据，并且选择用于特定辅助设备（20,16,18）的通道以响应轮询。在轮询之后，辅助设备（20,16,18）将辅助设备发射机（42）改变到所选频道的频率。支流装置（20,16,18）发送数据以发送到控制站（8）或向控制站（8）发送否定确认。如果发送否定确认，则控制站（8）向控制站发送器通知该信道是空闲的。

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