公开(公告)号：EP1209913A2

公开(公告)日：2002-05-29

申请号：EP01127366.1

申请日：2001-11-21

申请人： AT&T Corp.

发明人： Basso, Andrea ,  Jackel, Lawrence David ,  Kim, Byounh-Jo J. ,  Woodward, Sheryl Leigh

IPC分类号： H04N7/16

CPC分类号： H04N21/2385 ,  H04H20/10 ,  H04H20/38 ,  H04H20/42 ,  H04H20/78 ,  H04H60/46 ,  H04H60/66 ,  H04N7/165 ,  H04N21/25891 ,  H04N21/6581 ,  H04N21/6587

摘要： A system and method is provided for simulating broadcast services over a cable television system by transmitting one or more programs, such as video, to a user in response to the user requesting the programs. A physical-layer channel is dynamically allocated to the user and each requested program is transmitted to the user on the allocated physical-layer channel. Therefore, channel selection is performed at a primary hub, rather than at a user's premises. Additionally, user-profile information can be stored in a primary hub, and one or more programs related to the stored user-profile information are automatically transmitted to the user without necessarily requiring the user to request the programs.

摘要翻译： 提供了一种系统和方法，用于响应于请求程序的用户向用户发送诸如视频的一个或多个程序来模拟有线电视系统上的广播服务。 动态分配物理层信道给用户，并且在所分配的物理层信道上向用户发送每个请求的节目。 因此，信道选择在主集线器而不是在用户的场所执行。 此外，用户简档信息可以存储在主集线器中，并且与存储的用户简档信息相关的一个或多个程序被自动发送给用户，而不一定要求用户请求程序。

公开(公告)号：EP0762766A2

公开(公告)日：1997-03-12

申请号：EP96303820.3

申请日：1996-05-29

申请人： AT&T Corp.

发明人： Bodeep, George E. ,  Gnauck, Alan H. ,  Darcie, Thomas Edward ,  Lu, Xiaolin ,  Woodward, Sheryl Leigh

IPC分类号： H04N7/173

CPC分类号： H04N7/17309

摘要： A converter apparatus (Mini Fiber Node MFN) (403) for use in a communication network (e.g., a coax network) includes a signal distribution unit (e.g., fiber node FN) (420) for transmitting frequency-division multiplexed communication signals downstream over a coax cable (141) to a node apparatus (144) (amplifier) and via an access path (310,310a) to a plurality of end unit apparatuses (311) connected thereto. The converter apparatus (403) connects to the access path and receives downstream second FDM signals directly from a central office (110) over an optical communication path (404) and sends the second FDM signals to at least one end unit apparatus (311) over the access path. The converter apparatus also receives upstream FDM signals from the at least one end unit apparatus over the access path and transmits the upstream FDM signals to the central office (110) over the optical path (405). In another embodiment, the converter apparatus connects directly to the primary path to provide service to an end user apparatus connected in a "tapped-bus" arrangement.

摘要翻译： 在通信网络（例如，同轴电缆网络）中使用的转换器装置（微型光纤节点MFN）（403）包括信号分配单元（例如，光纤节点FN）（420），用于在下行发送频分复用的通信信号 同轴电缆（141）连接到节点装置（144）（放大器），并且经由与其连接的多个端部单元装置（310,310a）的访问路径（310,310a）。 转换器装置（403）连接到访问路径，并通过光通信路径（404）直接从中心局（110）接收下行的第二FDM信号，并将第二FDM信号发送到至少一个终端单元设备（311） 访问路径。 转换器装置还通过接入路径从至少一个终端单元设备接收上行FDM信号，并通过光路（405）将上行FDM信号发送到中心局（110）。 在另一实施例中，转换器装置直接连接到主路径，以向以“抽头总线”方式连接的终端用户装置提供服务。

公开(公告)号：EP1739866A3

公开(公告)日：2008-02-20

申请号：EP06114895.3

申请日：2006-06-02

申请人： AT&T Corp.

发明人： Feuer, Mark David ,  Woodward, Sheryl Leigh

IPC分类号： H04B10/24 ,  H04J14/02

CPC分类号： H04J14/0226 ,  H04B10/2503 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0216 ,  H04J14/0246 ,  H04J14/025

摘要： A bidirectional optical communications system that is operable to dynamically allocate wavelengths for transmission in either direction in an optical fiber. The dynamic allocation is controlled by programmable optical devices. The programmable optical devices may be well known programmable devices such as wavelength selective switches and wavelength blockers or any other programmable optical device capable of dynamically allocating wavelengths between the two directions in the optical fiber. In addition, the programmable optical devices may be any combination of such wavelength selective switches, wavelength blockers or other programmable optical devices with other optical devices such as optical circulators, gain blocks, add/drop multiplexers, or fixed optical filters. Such a bidirectional optical communications system enables the dynamic allocation of bandwidth in an optical fiber without the need to replace components, such as fixed optical filters, and without disturbing communications on all the wavelengths transmitted in the optical fiber.

公开(公告)号：EP0868044B1

公开(公告)日：2007-08-08

申请号：EP98301600.7

申请日：1998-03-04

申请人： AT&T Corp.

发明人： Gnauck, Alan H. ,  Xiaolin, Lu ,  Woodward, Sheryl Leigh

IPC分类号： H04J14/02 ,  H04B10/24

CPC分类号： H04B10/2503 ,  H04J14/0298

公开(公告)号：EP0845878A3

公开(公告)日：2001-05-02

申请号：EP97120752.7

申请日：1997-11-26

申请人： AT&T Corp.

发明人： Ariyavisitakul, Sirikiat ,  Woodward, Sheryl Leigh

IPC分类号： H04B10/00 ,  H04B10/12

CPC分类号： H04B10/25758

摘要： A transmission system for backhauling CDMA signals from remote antennas to the centralized base station of a wireless communication system includes a laser transmitter and an optical receiver coupled to an optical fiber. Wireless signals are backhauled to the central base station without degrading signal quality, and with minimal signal processing performed at the remote antenna site. The RF drive current driving the laser transmitter is kept above a predetermined level to prevent noise caused by optical feedback into the laser transmitter caused by Rayleigh backscatter in the optical fiber. A method of testing the optical link is presented which avoids the expense of using a real CDMA system to test each link. The testing method enables the dynamic range of inexpensive, unisolated, uncooled lasers in the optical link to be increased so the optical link can cost-effectively backhaul the CDMA signals.

公开(公告)号：EP1798886A2

公开(公告)日：2007-06-20

申请号：EP07105411.8

申请日：1998-03-04

申请人： AT&T Corp.

发明人： Gnauck, Alan H ,  Xiaolin, Lu ,  Woodward, Sheryl Leigh

IPC分类号： H04J14/02 ,  H04B10/24

CPC分类号： H04B10/2503 ,  H04J14/0298

摘要： A bidirectional optical transmission system provides communications between at least two locations over a single optical fiber. The transmitters at the respective locations are defined to have different optical spectra characteristics to avoid production of optical beat interference.

摘要翻译： 双向光传输系统通过单个光纤提供至少两个位置之间的通信。 各个位置处的发射器被定义为具有不同的光谱特性，以避免产生光学差拍干扰。

公开(公告)号：EP1739866A2

公开(公告)日：2007-01-03

申请号：EP06114895.3

申请日：2006-06-02

申请人： AT&T Corp.

发明人： Feuer, Mark David ,  Woodward, Sheryl Leigh

IPC分类号： H04B10/24 ,  H04J14/02

CPC分类号： H04J14/0226 ,  H04B10/2503 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0216 ,  H04J14/0246 ,  H04J14/025

摘要： A bidirectional optical communications system that is operable to dynamically allocate wavelengths for transmission in either direction in an optical fiber. The dynamic allocation is controlled by programmable optical devices. The programmable optical devices may be well known programmable devices such as wavelength selective switches and wavelength blockers or any other programmable optical device capable of dynamically allocating wavelengths between the two directions in the optical fiber. In addition, the programmable optical devices may be any combination of such wavelength selective switches, wavelength blockers or other programmable optical devices with other optical devices such as optical circulators, gain blocks, add/drop multiplexers, or fixed optical filters. Such a bidirectional optical communications system enables the dynamic allocation of bandwidth in an optical fiber without the need to replace components, such as fixed optical filters, and without disturbing communications on all the wavelengths transmitted in the optical fiber.

摘要翻译： 一种双向光通信系统，其可操作以动态地分配波长以在光纤中的任一方向上传输。 动态分配由可编程光学器件控制。 可编程光学器件可以是众所周知的可编程器件，例如波长选择开关和波长阻抗器，或者能够在光纤中在两个方向上动态分配波长的任何其它可编程光学器件。 此外，可编程光学器件可以是这样的波长选择开关，波长阻挡器或具有其他光学器件的其它可编程光学器件（例如光循环器，增益块，分插复用器或固定滤光器）的任何组合。 这种双向光通信系统使得能够在光纤中动态分配带宽，而不需要替换诸如固定滤波器之类的组件，并且不会在光纤中传输的所有波长上的干扰通信。

公开(公告)号：EP0841817A2

公开(公告)日：1998-05-13

申请号：EP97119619.1

申请日：1997-11-10

申请人： AT&T Corp.

发明人： Gnauck, Alan H. ,  Lu, Xiaolin ,  Reichmann, Kenneth C. ,  Woodward, Sheryl Leigh

IPC分类号： H04N7/173 ,  H04N7/22

CPC分类号： H04N7/22 ,  H04N7/17309

摘要： A communication network and method is provided to communicate between a central office/head end and a plurality of end-units (EUs). A first transmission medium is connected between the central office and an intermediate node. A plurality of second transmission mediums are connected between the central office and a plurality of mini-fiber nodes. The intermediate node is also associated with each of the mini-fiber nodes such that an analog broadcast service may be sent over the first transmission medium to each of the mini-fiber nodes. Further, switched digital services and digital broadcast services are also sent over the second transmission mediums to each of the mini-fiber nodes. The mini-fiber nodes combine the signals and send the combined signals to a corresponding subset of EUs.

摘要翻译： 一种通信网络和方法，提供了一种中心局/头端和终端单元有多个（EUS）之间进行通信。 第一传输介质连接该中心局之间，在中间节点。 的第二传输介质的多个连接中心局和迷你纤维节点之间的多个。 因此，中间节点与每个检查的微型光纤节点相关联的模拟广播服务做可以在第一传输媒体到每个微型光纤节点的发送。 此外，交换因此数字服务和数字广播服务在第二传输媒体到每个微型光纤节点的发送。 小型光纤节点结合的信号，并发送所述组合的信号至诸EU的对应子集。

公开(公告)号：EP0762766A3

公开(公告)日：1997-11-05

申请号：EP96303820.3

申请日：1996-05-29

申请人： AT&T Corp.

发明人： Bodeep, George E. ,  Gnauck, Alan H. ,  Darcie, Thomas Edward ,  Lu, Xiaolin ,  Woodward, Sheryl Leigh

IPC分类号： H04N7/173

CPC分类号： H04N7/17309

摘要： A converter apparatus (Mini Fiber Node MFN) (403) for use in a communication network (e.g., a coax network) includes a signal distribution unit (e.g., fiber node FN) (420) for transmitting frequency-division multiplexed communication signals downstream over a coax cable (141) to a node apparatus (144) (amplifier) and via an access path (310,310a) to a plurality of end unit apparatuses (311) connected thereto. The converter apparatus (403) connects to the access path and receives downstream second FDM signals directly from a central office (110) over an optical communication path (404) and sends the second FDM signals to at least one end unit apparatus (311) over the access path. The converter apparatus also receives upstream FDM signals from the at least one end unit apparatus over the access path and transmits the upstream FDM signals to the central office (110) over the optical path (405). In another embodiment, the converter apparatus connects directly to the primary path to provide service to an end user apparatus connected in a "tapped-bus" arrangement.

公开(公告)号：EP1798886A3

公开(公告)日：2008-12-31

申请号：EP07105411.8

申请日：1998-03-04

申请人： AT&T Corp.

发明人： Gnauck, Alan H ,  Xiaolin, Lu ,  Woodward, Sheryl Leigh

IPC分类号： H04J14/02 ,  H04B10/24

CPC分类号： H04B10/2503 ,  H04J14/0298

摘要： A bidirectional optical transmission system provides communications between at least two locations over a single optical fiber. The transmitters at the respective locations are defined to have different optical spectra characteristics to avoid production of optical beat interference.