公开(公告)号：EP0749157A3

公开(公告)日：1997-05-07

申请号：EP96304039.9

申请日：1996-06-04

申请人： AT&T IPM Corp.

发明人： Kane, Casey Francis ,  Shmulovich, Joseph

IPC分类号： H01L21/60 ,  H01L23/485

CPC分类号： H01L24/13 ,  H01L24/11 ,  H01L2224/05166 ,  H01L2224/05169 ,  H01L2224/05669 ,  H01L2224/11013 ,  H01L2224/13099 ,  H01L2224/131 ,  H01L2224/13111 ,  H01L2924/0001 ,  H01L2924/01004 ,  H01L2924/01006 ,  H01L2924/01013 ,  H01L2924/01022 ,  H01L2924/01024 ,  H01L2924/01033 ,  H01L2924/01039 ,  H01L2924/01078 ,  H01L2924/01079 ,  H01L2924/01082 ,  H01L2924/01322 ,  H01L2924/014 ,  H01L2924/04941 ,  H01L2924/12041 ,  H01L2924/12042 ,  H01L2924/14 ,  H01L2924/00014 ,  H01L2924/00

摘要： During formation of solder bumps on the bonding pads of a component, a two-layer dam structure is utilized to block solder from flowing from the pads to adjacent portions of a metallization pattern. After the solder bumps are formed, the top dam layer is dissolved, whereby any solder debris present on the top dam layer is also removed from the structure. The bottom dam layer, which remains intact during the removal step, serves to confine solder movement during a subsequent bonding operation in which the solder bumps are reflowed to cause them to adhere to aligned pads on another component.

公开(公告)号：EP0743607A3

公开(公告)日：1997-04-16

申请号：EP96303206.5

申请日：1996-05-08

申请人： AT&T IPM Corp.

发明人： Libkin, Leonid

IPC分类号： G06F17/30

CPC分类号： G06F17/30607 ,  Y10S707/99933 ,  Y10S707/99943

摘要： A method and apparatus for querying a disjunctive database is disclosed. An annotated object, which defines a complete object which is a unique element of the normal form of the database, is stored and maintained in memory. A complete object is created using the annotated object, and is stored in memory. A query is run against the complete object. If continued processing is required, a next function produces a next annotated object, which represents another unique element of the normal form of the database. The next annotated object is stored in memory, overwriting the previous annotated object. A complete object is then created using the next annotated object and is stored in memory, overwriting the previous complete object. The query is then applied to the complete object stored in memory. By processing the elements of the normal form one at a time and reusing memory spaces, the present invention has a polynomial space requirement. The invention also allows processing to begin from a pre-defined annotated object, either user defined or random. A user defined annotated object may define certain sub-objects which are not to be processed. Further, processing may terminate with the last processed annotated object as an output.

公开(公告)号：EP0762796A2

公开(公告)日：1997-03-12

申请号：EP96306105.6

申请日：1996-08-21

申请人： AT&T IPM Corp.

发明人： Lee, David Y.

IPC分类号： H04Q7/38 ,  H04Q7/22

CPC分类号： H04W12/12

摘要： An improved wireless communication system (100) including a process and apparatus for detecting and preventing fraudulent usage of wireless communication service has a central database (110) in communication with wireless communication networks (A 1 --A n ) and paging networks (B 1 --B n ), with the central database (110) being capable of determining when a wireless terminal is being fraudulently used in a wireless communication network. The central database is further capable of sending a paged message to the subscriber notifying the subscriber of the suspected fraudulent usage.

摘要翻译： 包括用于检测和防止无线通信服务的欺诈性使用的处理和装置的改进的无线通信系统（100）具有与无线通信网络（A1-An）和寻呼网络（B1-Bn）通信的中央数据库（110） ），其中中央数据库（110）能够确定何时在无线通信网络中欺骗性地使用无线终端。 中央数据库还能够向订户发送分页消息，通知用户可疑的欺诈用途。

公开(公告)号：EP0762676A2

公开(公告)日：1997-03-12

申请号：EP96305798.9

申请日：1996-08-07

申请人： AT&T IPM Corp.

发明人： Chandrasekhar, S.

IPC分类号： H04B10/14

CPC分类号： H04B10/25 ,  G02B6/12004 ,  G02B6/4246

摘要： An optical network unit designed to be connected to incoming and outgoing fibers at a customer location is made in integrated-circuit form. One portion of the integrated circuit functions as an optical splitter, a photodetector and a modulator. Another portion of the circuit serves as an amplifier.

公开(公告)号：EP0762661A2

公开(公告)日：1997-03-12

申请号：EP96305613.0

申请日：1996-07-31

申请人： AT&T IPM Corp.

发明人： Myer, Robert Evan ,  Wen, Jack Chi-Chieh

IPC分类号： H04B1/26

CPC分类号： H04B1/28 ,  H03G3/3042

摘要： Disclosed is a channelized multi-carrier signal processor capable of equalizing power levels of individual carriers of a multi-carrier signal to within a predetermined dynamic range. In one embodiment, the signal processor includes a power splitter for splitting a multi-carrier input signal into a plurality of electrical paths. In each electrical path there resides a signal modifier that is operable to isolate signal energy associated with a given carrier of the multi-carrier signal. Each signal modifier includes an automatic gain control (AGC) circuit to control the power level of the carrier isolated therein to within a predetermined power level window so that the isolated carriers of each signal modifier are equalized in power. A power combiner then combines the equalized carriers to produce a multi-carrier output signal, which can be applied to a limited dynamic range device such as an A/D converter. Preferably, the carriers are isolated with the use of a tunable frequency synthesizer and a down-converting mixer within each signal modifier. This arrangement provides flexibility as to the frequencies which can be used for the modulated carriers of the multi-carrier input signal.

摘要翻译： 公开了一种信道化多载波信号处理器，其能够将多载波信号的各个载波的功率电平均衡到预定动态范围内。 在一个实施例中，信号处理器包括功率分配器，用于将多载波输入信号分离成多个电路径。 在每个电路中，存在可操作以隔离与多载波信号的给定载波相关联的信号能量的信号修改器。 每个信号修正器包括一个自动增益控制（AGC）电路，用于控制在预定功率电平窗内隔离的载波的功率电平，使得每个信号修正器的隔离载波在功率上均衡。 功率组合器然后组合均衡的载波以产生多载波输出信号，其可以应用于诸如A / D转换器的有限的动态范围装置。 优选地，使用可变频率合成器和每个信号修改器内的下变频混频器隔离载波。 这种布置提供了对于可以用于多载波输入信号的调制载波的频率的灵活性。

公开(公告)号：EP0762275A2

公开(公告)日：1997-03-12

申请号：EP96306218.7

申请日：1996-08-28

申请人： AT&T IPM Corp.

发明人： Biliris, Alexandros ,  Panagos, Euthimios ,  Hillyer, Bruce K.

IPC分类号： G06F9/46

CPC分类号： G06F9/4887 ,  G06F2209/485 ,  H04N7/17336 ,  H04N21/2393 ,  H04N21/241

摘要： An apparatus and method is provided that supports continuous media for conventional networked workstations and PC's. Described are user-level mechanisms and policies designed to give good, efficient multimedia service under the mild assumption that the operating system provides a preemptive real-time scheduling class that can be used to give CPU cycles to the multimedia processes in preference to other processes that are not time sensitive. There are no modifications to the operating system kernel and isochronous networks are not required. It suffices for an application to state that it wants to play a particular stream of a type known to the server (e.g. a file containing MPEG-1 video 320x240 pixels, 8-bit color, 30 frames per second), or for the application to specify a frame rate and an index describing the offset of each frame in a file.

摘要翻译： 提供了一种支持传统网络工作站和PC的连续媒体的设备和方法。 所描述的用户级别的机制和策略旨在提供良好，高效的多媒体服务，假设操作系统提供了抢先式的实时调度类别，可用于为多媒体进程提供CPU周期而不是其他进程 对时间不敏感。 操作系统内核没有修改，不需要等时网络。 只要应用程序声明它想播放服务器已知类型的特定数据流（例如，包含MPEG-1视频320x240像素，8位颜色，每秒30帧）的文件，或者用于应用程序 指定一个帧速率和一个描述文件中每帧的偏移量的索引。

公开(公告)号：EP0762268A1

公开(公告)日：1997-03-12

申请号：EP96306216.1

申请日：1996-08-28

申请人： AT&T IPM Corp.

发明人： Lau, Hon Shing

IPC分类号： G06F7/00 ,  G06F7/50

CPC分类号： G06F7/74 ,  G06F7/485 ,  G06F7/49936

摘要： An adder using a leading zero/one detector (LZD) circuit and method of use determine an exact normalization shift with fewer logic levels and number of gates, resulting in saving considerable execution time to improve not only the timing as well as to reduce the size of the logic implementing the adder. In addition, a parallel method to locate the most significant digit is disclosed. Such an LZD circuit and method may be incorporated in an integrated circuit, and the LZD circuit includes a propagation value generator for generating a propagation value from input signals representing operands; and a location value generator for generating the location value from the generated propagation value.

摘要翻译： 使用前导零/一检测器（LZD）电路和使用方法的加法器使用更少的逻辑电平和门数来确定精确的归一化移位，导致节省大量的执行时间，以便不仅改善时序以及减小时间 的逻辑实现加法器。 此外，公开了一种用于定位最高有效位的并行方法。 这种LZD电路和方法可以并入集成电路中，并且LZD电路包括传播值发生器，用于从表示操作数的输入信号产生传播值; 以及位置值生成器，用于从所生成的传播值生成位置值。

公开(公告)号：EP0759672A1

公开(公告)日：1997-02-26

申请号：EP95401936.0

申请日：1995-08-23

申请人： AT&T IPM Corp.

发明人： MacDonald, Alistair Malcolm

IPC分类号： H04M3/22 ,  G01R15/14 ,  H04B10/00

CPC分类号： G01R15/146 ,  H04B10/807 ,  H04M3/2272

摘要： A minimally invasive detection circuit (10) for determining whether a current flow is present in an electrical conductor, such as a telephone line (TIP/RING), without appreciably loading the conductor. A load (R 1 ) is placed in series with the conductor to generate a voltage drop when current flows therethrough. The voltage drop is detected by powered components (18) that provide a signal, across an electrical isolation barrier (22), to an electrically isolated output (26). The powered components are powered (via 30) by a voltage source that is on the isolated or remote side of the isolation barrier and whose voltage output is provided to the powered components across the isolation barrier so as to maintain electrical isolation between the powered components and the output and thereby avoid unnecessary loading of the conductor.

摘要翻译： 一种用于确定电导体（例如电话线（TIP / RING））中是否存在电流的微创检测电路（10），而不明显地加载导体。 负载（R1）与导体串联放置，当电流流过其中时产生电压降。 通过供电部件（18）检测电压降，所述供电部件（18）将跨越电绝缘屏障（22）的信号提供给电隔离的输出（26）。 有源部件通过位于隔离屏障的隔离或远端侧的电压源（通过30）供电，并且其电压输出通过隔离屏障提供给有源部件，以便保持电源部件之间的电气隔离和 输出，从而避免不必要的导体加载。

公开(公告)号：EP0759235A1

公开(公告)日：1997-02-26

申请号：EP96904453.0

申请日：1996-01-11

申请人： AT&T IPM Corp.

发明人： VELARDO, Patrick, Michael, Jr. ,  WYNN, Woodson, Dale

IPC分类号： H04B3 ,  H04M3

CPC分类号： H04B3/237 ,  H04B3/21

摘要： A method and apparatus are described for reducing, in communication signals (x[n]) received by a local network from a remote network (FAR-IN signals), that energy content that is attributable to echoes of signals (y[n]) transmitted into the local network (NEAR-END signals). This is achieved, in part, by generating a time-varying TEMPLATE signal which represents the smoothed energy content of NEAR-IN signals (y[n-epd]) delayed according to the echo path and attenuated by an estimated echo transmission loss. A non-linear processor (130) passes the FAR-IN signal (x[n]) substantially without attenuation if it exceeds the TEMPLATE, but attenuate the FAR-IN (x[n]) signal if it lies within a defined range below the TEMPLATE.

公开(公告)号：EP0758163A1

公开(公告)日：1997-02-12

申请号：EP96305614.8

申请日：1996-07-31

申请人： AT&T IPM Corp.

发明人： Myer, Robert Evan

IPC分类号： H03F1/32

CPC分类号： H03F1/3229 ,  H03F2201/3212

摘要： A distortion creation and reduction circuit (110) comprises a distortion circuit (120), a correction circuit (130), and a final signal combiner (170). The distortion circuit (120) receives a first carrier signal (on 113) and forms a first distorted carrier signal (on 123) comprised of a first carrier signal and a first distortion signal component. The correction circuit (130) receives a second carrier signal (on 115) and forms a second distorted carrier signal (on 164) comprised of a second carrier signal and a second distortion signal component. The first and second distorted carrier signals are formed and combined (in 170) so that the first and second distortion signal components destructively combine and the first and second carrier signal components constructively combine.
The distortion circuit is preferably comprised of a power amplifier (122). The correction circuit preferably comprises a distortion correction portion (140), a carrier correction portion (150), a correction signal combiner (160), and a correction amplifier (162).

摘要翻译： 失真创建和减少电路（110）包括失真电路（120），校正电路（130）和最终信号组合器（170）。 失真电路（120）接收第一载波信号（在113上）并且形成由第一载波信号和第一失真信号分量组成的第一失真载波信号（在123上）。 校正电路（130）接收第二载波信号（在115上）并形成由第二载波信号和第二失真信号分量组成的第二失真载波信号（在164上）。 第一和第二失真载波信号被形成和组合（在170中），使得第一和第二失真信号分量相消合并且第一和第二载波信号分量建设性地组合。 失真电路优选地由功率放大器（122）组成。 校正电路优选地包括失真校正部分（140），载波校正部分（150），校正信号组合器（160）和校正放大器（162）。