专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5394437A High-speed modem synchronized to a remote CODEC 失效
标题翻译：高速调制解调器与远程编解码器同步
公开(公告)号：US5394437A
公开(公告)日：1995-02-28
申请号：US963539
申请日：1992-10-20
申请人： Ender Ayanoglu , Nuri R. Dagdeviren , James E. Mazo , Burton R. Saltzberg
发明人： Ender Ayanoglu , Nuri R. Dagdeviren , James E. Mazo , Burton R. Saltzberg
IPC分类号： H04B14/04 , H04L7/02 , H04L7/033 , H04L25/49 , H04B1/38
CPC分类号： H04L7/0054 , H04B14/046 , H04L25/4927 , H04L7/0334
摘要： A modem that operates reliably at a symbol rate that corresponds to twice its bandwidth even when it is coupled to a receiving A/D converter that operates under control of a clock is realized by synchronizing the modem's operation to the A/D's clock. The superior operation of this modem advantageously extends to A/D clock frequencies beyond the frequency of twice the modem's bandwidth. To minimize quantization noise, the modem's output is conditioned to minimize intersymbol interference by adjusting the modem's output to the A/D converter's sampling times and slicing levels. When the A/D's clock is higher than twice the bandwidth of the modem's output signal, some intersymbol interference cannot be avoided. In accordance with this invention, the position and value of this interference is computed at the receiver and subtracted from the received signal.
摘要翻译：通过将调制解调器的操作与A / D的时钟同步，可以实现以对应于其带宽的两倍的符号速率可靠地操作的调制解调器，即使当其耦合到在时钟的控制下操作的接收A / D转换器时。该调制解调器的优越操作有利地扩展到超过调制解调器带宽两倍的A / D时钟频率。为了最小化量化噪声，调制解调器的输出通过将调制解调器的输出调整为A / D转换器的采样时间和切片电平来调节最小化符号间干扰。当A / D的时钟高于调制解调器输出信号带宽的两倍时，无法避免某些符号间干扰。根据本发明，在接收机处计算该干扰的位置和值，并将其从接收信号中减去。

2. 发明授权

US5528625A High speed quantization-level-sampling modem with equalization arrangement 失效
标题翻译：具有均衡布置的高速量化级采样调制解调器
公开(公告)号：US5528625A
公开(公告)日：1996-06-18
申请号：US176742
申请日：1994-01-03
申请人： Ender Ayanoglu , Glenn D. Golden , Raymond K. Jones , James E. Mazo , David G. Shaw
发明人： Ender Ayanoglu , Glenn D. Golden , Raymond K. Jones , James E. Mazo , David G. Shaw
IPC分类号： H03H21/00 , H04B3/04 , H04B14/04 , H04L25/49 , H04L5/16 , H03K7/02 , H04B1/38 , H04L27/02
CPC分类号： H04L25/4927
摘要： The present invention is a quantization-level-sampling (QLS) modem which includes means for separately equalizing each loop of an end-to-end digital telephone system network connection by employing a plurality of transmitter filters and a plurality of receiver filters in such a way that, in the direction of transmission from modem to central office, the voltage samples seen by the coder/decoder stations are equivalent to the network quantization levels transmitted by the modem, and in the direction of transmission from central office to modem, the voltage samples seen by the modem are equivalent to the network quantization levels encoded by the coder/decoder stations. The invention also includes a QLS modem communications system which includes the aforesaid digital telephone system network and a plurality of QLS modems. In preferred embodiments, an adaptation service unit within the telephone system network assists in the determination of the settings of the transmitter and receiver filters.
摘要翻译：本发明是量化级采样（QLS）调制解调器，其包括通过采用多个发射机滤波器和多个接收机滤波器来分别均衡端到端数字电话系统网络连接的每个环路的装置在从调制解调器到中心局的传输方向上，由编码器/解码器站所看到的电压样本等同于由调制解调器发送的网络量化级别，并且在从中心局到调制解调器的传输方向上，电压由调制解调器看到的样本等同于由编码器/解码器站编码的网络量化级。本发明还包括一个包括上述数字电话系统网络和多个QLS调制解调器的QLS调制解调器通信系统。在优选实施例中，电话系统网络内的适配服务单元有助于确定发射机和接收机滤波器的设置。

3. 发明授权

US5007067A Diversity coding for transparent self-healing communications networks 失效
标题翻译：透明自愈通信网络的分集编码
公开(公告)号：US5007067A
公开(公告)日：1991-04-09
申请号：US414874
申请日：1989-09-29
申请人： Ender Ayanoglu , Richard D. Gitlin , Chih-Lin I , James E. Mazo
发明人： Ender Ayanoglu , Richard D. Gitlin , Chih-Lin I , James E. Mazo
IPC分类号： H04L1/22 , H04L1/02 , H04L25/49
CPC分类号： H04L1/02 , H04L25/4908
摘要： This invention is a technique for the substantially instantaneous self-healing of digital communications networks. Digital data streams from each of N nearby sources are combined and encoded to produce N+M coded data streams using a coding algorithm. The N+M coded data streams are then each transmitted over a separate long haul communications link to a decoder where any N of the N+M coded data streams can be decoded uniquely to produce the original N data streams. The orginal N data streams are then distributed to their respective separate end destinations. If any M or less of the N+M long haul communications links fails, i.e. as in a telephone line that gets cut or a long distance switch that fails, no rerouting of traffic need be done. Rather, the receiver detects loss of carrier on the failed link(s), and immediately supplies the missing data by decoding the data from the at least N remaining links. The technique overcomes a long felt problem of trying to reroute traffic by using sophisticated resource allocation techniques when a communications link fails.

4. 发明授权

US5717689A Data link layer protocol for transport of ATM cells over a wireless link 失效
标题翻译：用于通过无线链路传送ATM信元的数据链路层协议
公开(公告)号：US5717689A
公开(公告)日：1998-02-10
申请号：US541985
申请日：1995-10-10
申请人： Ender Ayanoglu
发明人： Ender Ayanoglu
IPC分类号： H04B10/20 , H04J3/00 , H04L1/00 , H04L1/16 , H04L1/18 , H04L12/28 , H04L12/56 , H04L29/06 , H04Q7/38 , H04L12/54
CPC分类号： H04L69/16 , H04L1/0009 , H04L1/0025 , H04L1/0083 , H04L1/1614 , H04L1/1664 , H04L1/1809 , H04L1/1832 , H04L47/10 , H04L47/27 , H04L49/205 , H04L49/25 , H04L49/3081 , H04L49/557 , H04L69/168 , H04L69/169 , H04L1/1812 , H04L2012/5607 , H04L2012/5616 , H04L2012/5619 , H04L2012/563 , H04L2012/5647 , H04L2012/5652 , H04L49/3009
摘要： The present invention is a reliable data link layer protocol to transport ATM cells over a wireless point-to-point link. The protocol ensures that the cells are transported reliably by use of a sliding window transport mechanism with selective repeat automatic repeat request (ARQ) and forward error correction (FEC). The protocol minimizes ATM header overhead by means of header compression and provides per-cell FEC whose size can be changed adaptively. The protocol also provides parity cells for recovery from errors that cannot be corrected using the per-cell FEC field. The number of these cells as well as the size of a window or frame can also be adaptively changed. In addition, the window can be terminated to request an immediate acknowledgment.
摘要翻译：本发明是通过无线点对点链路传输ATM信元的可靠数据链路层协议。该协议确保通过使用具有选择性重复自动重复请求（ARQ）和前向纠错（FEC）的滑动窗口传输机制可靠地传送小区。该协议通过报头压缩来最大限度地减少ATM报头开销，并且提供可以自适应地改变其大小的每小区FEC。该协议还提供用于从不能使用每小区FEC字段校正的错误进行恢复的奇偶校验单元。这些单元的数量以及窗口或框架的大小也可以自适应地改变。此外，可以终止窗口以请求立即确认。

5. 发明授权

US5119196A Ghost cancellation of analog TV signals 失效
标题翻译： GHOST取消模拟电视信号
公开(公告)号：US5119196A
公开(公告)日：1992-06-02
申请号：US542612
申请日：1990-06-25
申请人： Ender Ayanoglu , Israel Bar-David , Richard D. Gitlin , Chih-Lin I , Jack H. Winters
发明人： Ender Ayanoglu , Israel Bar-David , Richard D. Gitlin , Chih-Lin I , Jack H. Winters
IPC分类号： H04N5/21
CPC分类号： H04N5/211
摘要： Ghosts are canceled in received analog TV (for IDTV, EDTV, and HDTV) signals by utilizing the fact that there are short periods of time without the analog signals (the horizontal flyback interval between the lines) to process the received signal on a line-to-line basis using a finite impulse response (FIR) or an infinite impulse response (IIR) equalizer. This line-by-line processing (which can be implemented by periodic cleansing of the equalizer) overcomes the limitations of standard equalizers to allow for 40-50 dB of suppression of ghosts, even with nulls in the spectrum, as long as the ghost delay is less than the period of time without the analog signal. Furthermore, by using time inversion in combination with line-by-line processing, the stability problem of the conventional IIR equalizer is eliminated. The IIR equalizer may be implemented on a single digital integrated circuit. Alternatively, an FIR equalizer can be used which, although it may require multiple chips (i.e., more taps), can acquire and adapt to the ghosted channel more rapidly than an IIR equalizer. With line-by-line processing, FIR and IIR equalizers can eliminate any ghost with delays up to 11 .mu.sec in IDTV or EDTV. For larger delays, a standard IIR or FIR equalizer can be used as a preprocessor to eliminate small ghosts and an adaptive antenna can be used to eliminate large ghosts. Thus, with these techniques, the ghosting problem can be eliminated in all TV receivers.

6. 发明授权

US07929412B1 Media access control for MIMO wireless network 有权
标题翻译： MIMO无线网络的媒体访问控制
公开(公告)号：US07929412B1
公开(公告)日：2011-04-19
申请号：US11974848
申请日：2007-10-16
申请人： Ozgur Gurbuz , David Pignatelli , David Stephenson , Eldad Perahia , Bretton Douglas , Ender Ayanoglu
发明人： Ozgur Gurbuz , David Pignatelli , David Stephenson , Eldad Perahia , Bretton Douglas , Ender Ayanoglu
IPC分类号： H04J11/00 , H04L1/02 , H04J3/16
CPC分类号： H04B7/0689 , H04B7/0413 , H04B7/0628 , H04B7/0871 , H04W28/22 , H04W84/12
摘要： An apparatus and method for operating a Multiple Input Multiple Output (MIMO)-capable subscriber node are disclosed. In one embodiment, an apparatus includes a MIMO-capable physical layer transceiver and a Medium Access Control (MAC) layer block that measures a received transmission to determine channel conditions. Upon receiving a transmission wherein said channel conditions meet specified conditions, the MAC layer block requests an access point for permission to switch between a non-MIMO mode and a MIMO mode, and upon receiving permission, the MAC layer block switches between the non-MIMO mode and the MIMO mode. An apparatus for operating an access node is also disclosed.
摘要翻译：公开了一种用于操作多输入多输出（MIMO）能力的用户节点的装置和方法。在一个实施例中，一种装置包括MIMO能力的物理层收发机和媒体接入控制（MAC）层块，其测量接收到的传输以确定信道状况。在接收到其中所述信道条件满足指定条件的传输时，MAC层块请求接入点以允许在非MIMO模式和MIMO模式之间切换，并且在接收到许可后，MAC层块在非MIMO 模式和MIMO模式。还公开了一种用于操作接入节点的装置。

7. 发明授权

US07567537B1 Point-to-point MAC protocol for high speed wireless bridging 有权
标题翻译：用于高速无线桥接的点到点MAC协议
公开(公告)号：US07567537B1
公开(公告)日：2009-07-28
申请号：US10207694
申请日：2002-07-29
申请人： Ozgur Gurbuz , Ender Ayanoglu , Robert Meier
发明人： Ozgur Gurbuz , Ender Ayanoglu , Robert Meier
IPC分类号： H04Q7/24 , H04L12/413
CPC分类号： H04L12/413
摘要： Systems and methods for improving throughput in point-to-point wireless communication links are provided. In one particular implementation, a media access control (MAC) layer of the IEEE 802.11 standard is enhanced for use in point-to-point links to take advantage of the limited number of nodes participating in the link. In one embodiment, a master/slave type protocol provides contention free operation between two wireless nodes. Multiple priority levels and voice traffic may be accommodated with guaranteed Quality of Service.
摘要翻译：提供了用于提高点对点无线通信链路中吞吐量的系统和方法。在一个特定实现中，IEEE 802.11标准的媒体接入控制（MAC）层被增强以用于点对点链路以利用参与链路的有限数量的节点。在一个实施例中，主/从类型协议在两个无线节点之间提供无竞争的操作。可以在保证服务质量的情况下容纳多个优先级和语音流量。

8. 发明授权

US07359311B1 Decoding method and apparatus using channel state information for use in a wireless network receiver 有权
标题翻译：使用无线网络接收机中使用的信道状态信息的解码方法和装置
公开(公告)号：US07359311B1
公开(公告)日：2008-04-15
申请号：US10418694
申请日：2003-04-18
申请人： Milind D. Paranjpe , Brian Hart , David J. Pignatelli , Ender Ayanoglu , Eldad Perahia , Philip J. Ryan , Bretton Lee Douglas , Uri Parker
发明人： Milind D. Paranjpe , Brian Hart , David J. Pignatelli , Ender Ayanoglu , Eldad Perahia , Philip J. Ryan , Bretton Lee Douglas , Uri Parker
IPC分类号： H04J11/00
CPC分类号： H04L27/2647 , H04L1/20 , H04L5/0007 , H04L5/0048 , H04L25/0228
摘要： A method, apparatus, and carrier medium for determining channel state information (CSI) in an OFDM radio receiver. The receiver is for receiving packets of OFDM data as a result of OFDM data being transmitted. The method includes forming an estimate of the channels of the subcarriers for received OFDM data to provide frequency responses of the channels of the subcarriers, and forming a measure of quality (“channel state information,” “CSI”) for the channels of the subcarriers based on the relative strength of the frequency responses. The forming of the CSI does not require estimating the relative amount of noise or interference in each channel. The formed CSI is used in demodulating and decoding received OFDM data.
摘要翻译：一种用于在OFDM无线电接收机中确定信道状态信息（CSI）的方法，装置和载波介质。该接收机是用于接收OFDM数据的数据包作为发送OFDM数据的结果。该方法包括形成用于接收的OFDM数据的子载波的信道的估计，以提供子载波的信道的频率响应，并且形成用于子载波的信道的质量度量（“信道状态信息”，“CSI”）基于频率响应的相对强度。 CSI的形成不需要估计每个信道中的相对噪声或干扰量。所形成的CSI用于解调和解码接收的OFDM数据。

9. 发明授权

US5689252A Navigation system for an automotive vehicle 失效
标题翻译：汽车导航系统
公开(公告)号：US5689252A
公开(公告)日：1997-11-18
申请号：US612203
申请日：1996-03-07
申请人： Ender Ayanoglu , Krishan Kumar Sabnani
发明人： Ender Ayanoglu , Krishan Kumar Sabnani
IPC分类号： G09B29/00 , G01C21/00 , G01C21/34 , G01S19/48 , G08G1/00 , G08G1/09 , G08G1/0969 , G08G1/123
CPC分类号： G01C21/3492 , G08G1/0969
摘要： A navigation system for an automotive vehicle designed to display a road map image around the vehicle in correlation with the current position of the automotive vehicle. The navigation system is adapted to determine a best navigation route to a selected destination on the basis on the approximated time necessary to travel such a navigation route in correspondence to its travel length and speed rate.
摘要翻译：一种用于机动车辆的导航系统，其被设计成与机动车辆的当前位置相关地显示车辆周围的路线图。导航系统适于根据其行进长度和速度速率，根据行进该导航路线所需的近似时间，确定到所选择的目的地的最佳导航路线。

10. 发明授权

US08625507B1 Media access control for MIMO wireless network 有权
标题翻译： MIMO无线网络的媒体访问控制
公开(公告)号：US08625507B1
公开(公告)日：2014-01-07
申请号：US12932801
申请日：2011-03-07
申请人： Ozgur Gurbuz , David Pignatelli , David Stephenson , Eldad Perahia , Bretton Douglas , Ender Ayanoglu
发明人： Ozgur Gurbuz , David Pignatelli , David Stephenson , Eldad Perahia , Bretton Douglas , Ender Ayanoglu
IPC分类号： H04W4/00 , H04J3/16
CPC分类号： H04B7/0689 , H04B7/0413 , H04B7/0628 , H04B7/0871 , H04W28/22 , H04W84/12
摘要： An apparatus and method for operating a Multiple Input Multiple Output (MIMO)-capable subscriber node are disclosed. In one embodiment, an apparatus includes a MIMO-capable physical layer transceiver and a Medium Access Control (MAC) layer block that measures a received transmission to determine channel conditions. Upon receiving a transmission wherein said channel conditions meet specified conditions, the MAC layer block transmits a message to an access point indicating that the apparatus wants to switch between a non-MIMO mode and a MIMO mode, and upon receiving an acknowledgement, the MAC layer block switches between the non-MIMO mode and the MIMO mode. An apparatus for operating an access node is also disclosed.
摘要翻译：公开了一种用于操作多输入多输出（MIMO）能力的用户节点的装置和方法。在一个实施例中，一种装置包括MIMO能力的物理层收发机和媒体接入控制（MAC）层块，其测量接收到的传输以确定信道状况。在接收到所述信道条件满足指定条件的传输时，MAC层块向接入点发送指示设备在非MIMO模式和MIMO模式之间切换的消息，并且在接收到确认时，MAC层在非MIMO模式和MIMO模式之间进行块切换。还公开了一种用于操作接入节点的装置。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式