公开(公告)号：US5832032A

公开(公告)日：1998-11-03

申请号：US739491

申请日：1996-10-28

Applicant: Francis Giles Overbury

Inventor： Francis Giles Overbury

IPC: H04B3/30 ,  H04L27/26 ,  H04K1/02

CPC classification number: H04B3/30 ,  H04L27/2647

Abstract: Interference on a differential signal received at a first input to a digital data system processor is minimised or cancelled by summing a weighted portion of a local field signal with the differential signal. The local field signal may be a common-mode signal from the same line as the differential signal received at a second input. Weight may be a complex weight which shifts the local field signal in amplitude and phase. A weight control signal is derived from a comparison processor which compares the processed outputs of signal processors. Signal processors are preferably Discrete Multi-tone processors. Several iterations of this technique may be performed to establish an accurate weighting value.

Abstract translation: 通过将局部场信号的加权部分与差分信号相加来最小化或抵消对在数字数据系统处理器的第一输入处接收的差分信号的干扰。 本地场信号可以是与在第二输入处接收的差分信号相同的线路的共模信号。 重量可以是在幅度和相位上移动局部场信号的复重权重。 加权控制信号是从比较处理器的比较处理器得到的，比较处理器的处理后的输出。 信号处理器优选为离散多音处理器。 可以执行该技术的几次迭代以建立精确的加权值。

公开(公告)号：US5825860A

公开(公告)日：1998-10-20

申请号：US815260

申请日：1997-03-12

Applicant: Omayma El-Sayed Moharram

Inventor： Omayma El-Sayed Moharram

IPC: H04Q3/00 ,  H04Q3/66 ,  H04M15/00

CPC classification number: H04Q3/66 ,  H04Q3/0025

Abstract: In the Intelligent Networks environment, where multiple Service Providers and multi-Vendor equipment are involved in new service offering, the risk of overloading the network elements are real and managing the traffic is a challenge. Network traffic overloads could result from equipment failures, major equipment outages, or widespread loads above engineered levels. To solve the problem of network traffic overload, a Mediation Point (MP) is connected to a group of service control points (SCP). The MP includes control feature to balance the load and manage the overload controls for the multiple SCPs that are deployed in load sharing mode in the network.

Abstract translation: 在智能网络环境中，多个服务提供商和多厂商设备涉及新的服务产品，网络元素超载的风险是真实的，管理流量是一个挑战。 网络流量过载可能由设备故障，主要设备中断或高于设计水平的普遍负载引起。 为了解决网络流量过载问题，调解点（MP）连接到一组服务控制点（SCP）。 MP包括控制功能，以平衡负载并管理在网络中以负载分担模式部署的多个SCP的过载控制。

公开(公告)号：US5819178A

公开(公告)日：1998-10-06

申请号：US583591

申请日：1996-01-05

Applicant: Harry Cropper

Inventor： Harry Cropper

IPC: H04W4/00 ,  H04W8/02 ,  H04Q7/20

CPC classification number: H04W8/02 ,  H04W4/00

Abstract: In methods and apparatus for obtaining subscriber data for a mobile terminal roaming in a service area of a visited wireless network, the visited wireless network receives from the roaming mobile terminal a registration request specifying an identifier. If subscriber data corresponding to the identifier cannot be found at an HLR of the visited wireless network or at a VLR associated with the HLR, an Intersystem Roaming (ISR) database is searched for an address corresponding to the identifier. If such an address is found, a subscriber data request is transmitted to the address. If no such address is found, the subscriber data request is broadcast to plural wireless networks connected to the visited wireless network. Subscriber data received in response to the subscriber data request is stored in the VLR, and an address corresponding to the identifier is stored in the ISR. The methods and apparatus are particularly useful for supporting roaming of mobile terminals that cannot identify the location of their subscriber data.

Abstract translation: 在访问无线网络的服务区域中移动终端获取用户数据的方法和装置中，受访无线网络从漫游移动终端接收指定标识符的注册请求。 如果在访问无线网络的HLR或与HLR相关联的VLR处不能找到与标识符相对应的订户数据，则搜索系统间漫游（ISR）数据库以查找对应于该标识符的地址。 如果找到这样的地址，则向该地址发送用户数据请求。 如果没有找到这样的地址，则将用户数据请求广播到连接到受访无线网络的多个无线网络。 响应于用户数据请求而接收的订户数据被存储在VLR中，并且与该标识符相对应的地址被存储在ISR中。 所述方法和装置对于支持无法识别其用户数据的位置的移动终端的漫游特别有用。

公开(公告)号：US5815308A

公开(公告)日：1998-09-29

申请号：US650536

申请日：1996-05-20

Applicant: Hyung B. Kim ,  Farideh Khaleghi ,  Jinghui Li ,  Mohsen Kavehrad

Inventor： Hyung B. Kim ,  Farideh Khaleghi ,  Jinghui Li ,  Mohsen Kavehrad

IPC: H01S3/067 ,  H01S3/10 ,  H01S3/16 ,  H04B10/17 ,  H01J5/16 ,  H01S3/103 ,  H04B9/00

CPC classification number: H04B10/2971 ,  H01S3/10023 ,  H04B10/2912 ,  H01S3/06787 ,  H01S3/1003 ,  H01S3/1608

Abstract: Bidirectional WDM transmission at 2.5 Gb/s using a bidirectional erbium-doped fiber amplifier (EDFA) is demonstrated over a distance of 300 km. A symmetrical EDFA configuration with a frequency tunable reflection attenuator is used as a bidirectional amplifier. Experimental results show that the allowable gain of the EDFA can be increased significantly while the associated bit error rate BER penalty remains negligible.

Abstract translation: 使用双向掺铒光纤放大器（EDFA），2.5 Gb / s的双向WDM传输在300公里的距离内展现。 具有频率可调谐反射衰减器的对称EDFA配置被用作双向放大器。 实验结果表明，EDFA的容许增益可以显着提高，相关的误码率BER值仍然可以忽略不计。

公开(公告)号：USD398611S

公开(公告)日：1998-09-22

申请号：US72824

申请日：1997-06-25

Applicant: Clifford D. Read

Designer： Clifford D. Read

公开(公告)号：US5802043A

公开(公告)日：1998-09-01

申请号：US755431

申请日：1996-11-21

Applicant: Richard Prescott Skillen ,  Frederick Caldwell Livermore ,  Brent E. Allen

Inventor： Richard Prescott Skillen ,  Frederick Caldwell Livermore ,  Brent E. Allen

IPC: H04J3/08 ,  H04J3/16 ,  H04L12/43 ,  H04L12/56 ,  H04Q11/04

CPC classification number: H04J3/1617 ,  H04J3/085 ,  H04L12/43 ,  H04J2203/0089 ,  H04L2012/5672

Abstract: A novel transport architecture and network elements use nodes in a ring or virtual ring configuration. Information is exchanged among the nodes in a continuous series of containers carried in a superframe. A container is assigned to a destination node and is divided into partitions which are allocated for source nodes. Therefore, when a container destined to a particular destination node arrives at a node and if this node has information to send to the destination node, it fills the allocated partition within the container with information destined to the destination node. The sizes of the superframe, containers and partitions are all variable dynamically or statically.

Abstract translation: 一种新颖的传输架构和网络元素使用环或虚拟环配置中的节点。 在超帧中承载的连续的一系列容器中的节点之间交换信息。 将容器分配给目的节点，并将其划分为为源节点分配的分区。 因此，当目的地是特定目的地节点的容器到达节点时，如果该节点具有要发送到目的地节点的信息，则它将使用目的节点的信息填充容器内的已分配分区。 超帧，容器和分区的大小都可以动态或静态变化。

公开(公告)号：US5801578A

公开(公告)日：1998-09-01

申请号：US766095

申请日：1996-12-16

Applicant: William Bereza

Inventor： William Bereza

IPC: H03L7/089 ,  G05F1/10

CPC classification number: H03L7/0896

Abstract: A charge pump circuit includes a current mirror circuit of current-sourcing and current-sinking FETs and a current steering circuit of cross coupled differential pairs of FETs. Nominal current flowing in the current-sourcing and current-sinking FETs is set. The current is for charging and discharging a capacitor of an external filter. During charging of the capacitor, the current through the current-sourcing FET is directed to the capacitor and the current through the current-sinking FET is directed from a low impedance voltage source. During discharging of the filter capacitor, the current through the current-sourcing FET is directed to the low impedance voltage source and the current through the current-sinking FET is directed from the capacitor. The current flowing in the current-sourcing and current-sinking FETs is nominally constant, regardless of the tri-state condition, charging or discharging, with the result that power supply noise is reduced. Current change in the power supply rails is reduced when switching from current-sourcing to current-sinking or vice versa. By using cascode FETs in both of the current-sourcing and current-sinking FET circuits, power supply noise rejection is improved.

Abstract translation: 电荷泵电路包括电流源和电流吸收FET的电流镜电路和交叉耦合的差分对FET的电流控制电路。 在电流源和电流吸收FET中流动的标称电流被设定。 电流用于对外部滤波器的电容器进行充电和放电。 在电容器充电期间，通过电流源FET的电流被引导到电容器，并且通过电流吸收FET的电流从低阻抗电压源引导。 在滤波电容器的放电期间，通过电流源FET的电流被引导到低阻抗电压源，并且通过电流吸收FET的电流从电容器引导。 在电流源和电流吸收FET中流动的电流名义上是恒定的，不管三态条件，充电或放电，导致电源噪声降低。 当从电流源切换到电流沉降时反而导致电源轨的电流变化，反之亦然。 通过在电流源和电流吸收FET电路中使用共源共栅FET，提高了电源噪声抑制。

公开(公告)号：US5794147A

公开(公告)日：1998-08-11

申请号：US710285

申请日：1996-09-13

Applicant: Chenhong Huang

Inventor： Chenhong Huang

IPC: H04L27/00 ,  H04W48/16 ,  H04W88/02 ,  H04Q7/00

CPC classification number: H04L27/0012 ,  H04W48/16 ,  H04W88/02

Abstract: The method of quickly locating non-standard control channels in private cellular systems is accomplished in an embodiment of the present invention by determining the modulation type of a particular channel. The mobile station scans a received RF channel. The received signal is used for the evaluation of the modulation type of that channel by using matched filters designed for the specific signal of interest, and/or in another embodiment of the present invention is used for producing the spectral energy distribution of the channel revealing the type of modulation.

Abstract translation: 在本发明的实施例中，通过确定特定信道的调制类型来实现在私有蜂窝系统中快速定位非标准控制信道的方法。 移动台扫描所接收的RF信道。 所接收的信号用于通过使用为感兴趣的特定信号设计的匹配滤波器来评估该信道的调制类型，并且/或在本发明的另一个实施例中，用于产生显示信道的信道的频谱能量分布 调制类型

公开(公告)号：US5787115A

公开(公告)日：1998-07-28

申请号：US579967

申请日：1995-12-28

Applicant: Robert Turnbull ,  David Westergaard ,  Bruce W. Yee ,  Michael J. Lucas ,  Alan D. Eyre ,  Brian McKinney

Inventor： Robert Turnbull ,  David Westergaard ,  Bruce W. Yee ,  Michael J. Lucas ,  Alan D. Eyre ,  Brian McKinney

IPC: H04L5/14 ,  H04M9/00 ,  H04B1/38 ,  H04L5/16

CPC classification number: H04L5/1492 ,  H04M9/002

Abstract: A multi-line key telephone system not having a key service unit includes three analog telephone lines to which up to eight, three-line telephones may be connected to provide enhanced service features with cost-effectiveness. System reliability is maintained, notwithstanding the power dependency of the telephones, by including POTS telephones to provide uninterrupted essential telephone service in the event of a power outage. Both data and voice communications between two or more of the three-line telephones is achieved by converting an input digital bit stream from either a digital or analog source into a corresponding out-of-band binary FSK radio frequency output signal that is transceivingly communicated between the three-line telephones as data packets within a TDM frame. The out-of-band signal thus permits analog voice communications on the same line to proceed without interference. A telephone initiating a communications session acts as a master station, establishing inter-station communications synchronous at the frame level and asynchronous at the packet level. The called telephone functions as a slave station in a second time slot synchronized to a first time slot in the TDM frame received from the master. Temporary storage of data in firmware buffers and controlled timing at both the master and slave permits these stations to function within their respective TDM frame time slots.

公开(公告)号：US5787089A

公开(公告)日：1998-07-28

申请号：US687302

申请日：1996-07-25

Applicant: Liam M. Casey ,  David I. Allan

Inventor： Liam M. Casey ,  David I. Allan

IPC: H04L12/56 ,  H04N7/167 ,  H04N21/2381 ,  H04N21/266 ,  H04N21/2668 ,  H04N21/426 ,  H04N21/438 ,  H04N21/643 ,  H04Q11/04 ,  H04N7/173

CPC classification number: H04N21/4381 ,  H04N21/2381 ,  H04N21/26606 ,  H04N21/2668 ,  H04N21/42623 ,  H04N21/64307 ,  H04N7/1675 ,  H04Q11/0478 ,  H04L2012/5642 ,  H04L2012/5687

Abstract: A distribution network groups television program signals into service tiers. To provide these from unsynchronized MPEG streams without resynchronization, each stream, representing a single program signal is encapsulated into ATM cells with a virtual path (VP) identification of each ATM cell corresponding to the service tier and a virtual channel (VC) identification corresponding to the respective program signal. Payloads in cells having the same VP are scrambled using a scrambling key allocated to that VP and hence to the corresponding service tier, and are unscrambled by entitled subscribers using the scrambling key which is supplied to them individually using public/private encryption techniques.

Abstract translation: 分销网络将电视节目信号分组成服务层。 为了从未同步的MPEG流中提供这些来自不同步的数据流，表示单个程序信号的每个流被封装到具有对应于服务层的每个ATM信元的虚拟路径（VP）标识的ATM信元中，以及与服务层对应的虚拟信道（VC）标识 相应的程序信号。 使用具有相同VP的小区中的有效负载使用分配给该VP并因此加到相应服务层的扰频密钥进行加扰，并且通过使用使用公共/专用加密技术单独提供给它们的加密密钥的授权订户来解扰。