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1. 发明授权

US5570355A Method and apparatus enabling synchronous transfer mode and packet mode access for multiple services on a broadband communication network 失效
标题翻译：能够在宽带通信网络上实现多个服务的同步传输模式和分组模式接入的方法和装置
公开(公告)号：US5570355A
公开(公告)日：1996-10-29
申请号：US340927
申请日：1994-11-17
申请人： James E. Dail , Chia-Chang Li , Peter D. Magill , Kotikalapudi Sriram , Norman A. Whitaker, Jr.
发明人： James E. Dail , Chia-Chang Li , Peter D. Magill , Kotikalapudi Sriram , Norman A. Whitaker, Jr.
IPC分类号： H04J3/16 , H04J3/00 , H04J3/17 , H04L12/56 , H04L12/64 , H04Q11/04
CPC分类号： H04Q11/0478 , H04L12/6418 , H04J2203/0069 , H04J2203/0089 , H04L2012/5632 , H04L2012/5672 , H04L2012/6421 , H04L2012/6427 , H04L2012/644 , H04L2012/6448 , H04L2012/6462 , H04L2012/6486
摘要： STM traffic, e.g. voice and video telephony (VT), as well as packet mode (e.g. ATM) traffic, e.g. broadcast digital video, interactive television, and data, are transmitted via a multiple access broadband fiber/coaxial cable network. Customer premises equipment (CPE) at stations, and a bandwidth controller, which may be at a head end or central office, with which all stations communicate, work together to adapt to the changing demands of the traffic mix, and efficiently allocate bandwidth to a variety of bursty and isochronous traffic sources. The bandwidth allocation defines two types of time slots, STM and ATM, and divides each frame into two corresponding STM and ATM regions. The boundary between the regions can be changed dynamically. A contention access signaling channel is provided in the STM region, for call control and set-up requests. Within the STM region, the time slots can be of variable length and be allocated on a per call basis; the length of the time slots is proportional to the bandwidth requirement of STM calls. Within the ATM region, the time slots are of fixed length, each capable of accommodating one ATM cell. Further, the fixed length ATM time slots may be reserved for a particular user for the duration of a call, or may be shared through a contention process. At least one contention ATM time slot is always made available for signaling messages related to ATM call control and set-up requests. The downstream time frame is structured in a similar manner, but includes an additional MAP field to transmit to the stations ATM time slot allocation and status information for time slots in the upstream channel.
摘要翻译： STM业务，例如语音和视频电话（VT），以及分组模式（例如ATM）业务，例如。广播数字视频，交互式电视和数据通过多址宽带光纤/同轴电缆网络传输。站点的客户端设备（CPE）以及可能位于所有站点通信的前端或中心局的带宽控制器，一起工作以适应流量混合的不断变化的需求，并且有效地将带宽分配给各种突发和同步流量来源。带宽分配定义了两种类型的时隙STM和ATM，并将每个帧划分为两个对应的STM和ATM区域。区域之间的边界可以动态变化。在STM区域中提供争用接入信令信道，用于呼叫控制和建立请求。在STM区域内，时隙可以是可变长度，并且按每个呼叫分配; 时隙的长度与STM呼叫的带宽要求成比例。在ATM区域内，时隙是固定长度的，每个时隙可容纳一个ATM信元。此外，固定长度的ATM时隙可以在呼叫期间为特定用户保留，或者可以通过争用过程共享。总是使至少一个争用ATM时隙可用于与ATM呼叫控制和建立请求有关的信令消息。下游时间帧以类似的方式构成，但是包括附加的MAP字段，用于向站中的ATM时隙分配和上行信道中的时隙的状态信息进行发送。

2. 发明授权

US5155779A Optical circulating shift register 失效
标题翻译：光循环移位寄存器
公开(公告)号：US5155779A
公开(公告)日：1992-10-13
申请号：US787988
申请日：1991-11-05
申请人： Hercules Avramopoulos , M. Christina Gabriel , Alan Huang , Norman A. Whitaker, Jr.
发明人： Hercules Avramopoulos , M. Christina Gabriel , Alan Huang , Norman A. Whitaker, Jr.
IPC分类号： G02F3/00 , G02B6/28 , G11C21/00 , H04Q3/52
CPC分类号： G11C21/00 , G02B6/2843
摘要： An all-optical circulating shift register encodes a received optical clock signal with a value derived from an encoded optical signal received at a control port thereof. A data input to the shift register is used to modify an encoded optical signal. The resulting encoded clock signal, appearing at an output port, is coupled back to the control port. The shift register uses the encoded clock signal at the control port to encode a subsequently-received clock signal. In one embodiment, the optical shift register is implemented using a Sagnac switch having a feedback path coupled between an output port and a control port of the Sagnac switch.

3. 发明授权

US5146517A Low distortion all-optical threshold device 失效
标题翻译：低失真全光阈值器件
公开(公告)号：US5146517A
公开(公告)日：1992-09-08
申请号：US726057
申请日：1991-07-05
申请人： Hercules Avramopoulos , Paul M. William French , M. Christina Gabriel , Norman A. Whitaker, Jr.
发明人： Hercules Avramopoulos , Paul M. William French , M. Christina Gabriel , Norman A. Whitaker, Jr.
IPC分类号： H04B10/02 , G02B6/34 , G02F1/35 , H04B10/18
CPC分类号： G02F1/3519 , H04B10/2507 , G02B6/29347
摘要： Transmission capabilities of optical fibers are enhanced with all-optical means for removing noise from signal pulses and for creating clean output pulses with specified characteristics. This is accomplished with a nonlinear interferometer that is designed to operate on an amplified optical signal in the manner of a threshold device. More specifically, the nonlinear interferometer is designed to have a relatively level region in its input/output transfer function in the neighborhood of the low input signal and in the neighborhood of the high input signal. Depending on the input signal characteristics, it is sometimes beneficial to design the interfereometer so that the nominal high level of the input signal falls approximately in the middle of its corresponding flat region. In another embodiment, a bandpass filter is included at the output of the interferometer to remove the excess bandwidth that is created by the preceding amplifiers and the interferometer itself. The filter also removes the out-of-band noise in the input signal.

4. 发明授权

US5369520A Optical regeneration circuit 失效
标题翻译：光学再生电路
公开(公告)号：US5369520A
公开(公告)日：1994-11-29
申请号：US887034
申请日：1992-05-22
申请人： Hercules Avramopoulos , Norman A. Whitaker, Jr.
发明人： Hercules Avramopoulos , Norman A. Whitaker, Jr.
IPC分类号： H03K19/14 , G02F1/35 , H04B10/00 , H04B10/02 , H04B10/16 , H04B10/17 , H04B10/18 , H04L7/00 , H04J14/08
CPC分类号： H04B10/299 , G02F1/3519 , H04L7/0075
摘要： An optical regenerator includes a clock recovery circuit which recovers an optical clock signal from a received deteriorated optical data signal. The recovered optical clock signal is used to generate a new optical clock signal. The new optical clock signal and the received deteriorated optical data signal are applied as an input signal and control signal, respectively, to a Sagnac switch which encodes the new optical clock signal with the encoded information of the deteriorated optical data signal thereby regenerating a clean optical data signal.
摘要翻译：光学再生器包括时钟恢复电路，其从接收的退化的光学数据信号中恢复光学时钟信号。恢复的光时钟信号用于产生新的光时钟信号。新的光学时钟信号和接收到的劣化的光学数据信号分别作为输入信号和控制信号施加到Sagnac开关，该Sagnac开关用劣化的光学数据信号的编码信息对新的光学时钟信号进行编码，从而再次产生干净的光学数据信号。

5. 发明授权

US5208705A Optical linear feedback shift register 失效
标题翻译：光学线性反馈移位寄存器
公开(公告)号：US5208705A
公开(公告)日：1993-05-04
申请号：US787985
申请日：1991-11-05
申请人： Hercules Avramopoulos , Alan Huang , Norman A. Whitaker, Jr.
发明人： Hercules Avramopoulos , Alan Huang , Norman A. Whitaker, Jr.
IPC分类号： G02F3/00 , G06E1/00 , G11C21/00 , H03K3/84
CPC分类号： G02F3/00 , G06E1/00 , G11C21/00 , H03K3/84
摘要： An optical linear feedback shift register arrangement includes an optical encoding means implemented using a modified Sagnac switch. The encoding means encodes a received optical clock signal with a value derived from an exclusive-or of a first and second delayed version of an encoded signal received, respectively, at a first and second control ports. The resulting encoded clock signal, appearing at an output port, is then coupled through a first delay means to said first control port and coupled through a second delay means to said second control port. In another arrangement, an optical communication system utilizes the above-described linear feedback shift register to encode a data signal at a transmitter location and uses an identical linear feedback shift register at the receiver location to decode the encoded data signal.

6. 发明授权

US5301008A Optical crossbar exchange arrangement 失效
标题翻译：光学交叉杆交换布置
公开(公告)号：US5301008A
公开(公告)日：1994-04-05
申请号：US65516
申请日：1993-05-20
申请人： Alan Huang , Norman A. Whitaker, Jr.
发明人： Alan Huang , Norman A. Whitaker, Jr.
IPC分类号： G02F1/35 , H04Q3/52 , G01B9/02
CPC分类号： G02F1/3519
摘要： An optical crossbar exchange arrangement is implemented using a modified Sagnac switch. During the absence of a control signal, two separately numbered inputs are coupled to the same numbered outputs of the Sagnac switch (i.e., input1 to output1, etc.). During the presence of a control signal each of the two numbered inputs are switched and are coupled to a different numbered output (e.g., input1 to output2, etc.).
摘要翻译：使用修改的Sagnac开关实现光交叉开关交换装置。在没有控制信号的情况下，两个单独编号的输入耦合到Sagnac开关的相同编号的输出（即，输入1到输出1等）。在存在控制信号期间，两个编号输入中的每一个被切换并且被耦合到不同的编号输出（例如，输入1到输出2等）。

7. 发明授权

US5442474A Self-routing optical communication node using Sagnac gates 失效
标题翻译：使用Sagnac门的自路由光通信节点
公开(公告)号：US5442474A
公开(公告)日：1995-08-15
申请号：US297435
申请日：1994-08-29
申请人： Alan Huang , Norman A. Whitaker, Jr.
发明人： Alan Huang , Norman A. Whitaker, Jr.
IPC分类号： G02F3/00 , H04B10/02 , H04L12/56 , H04Q3/52 , H04Q11/00 , H04J14/00
CPC分类号： H04Q11/0005 , H04L12/56 , H04Q2011/002 , H04Q2011/0033 , H04Q2011/0035 , H04Q2011/0041 , H04Q2011/0045
摘要： A Sagnac gate-based self-routing optical signal switching node demultiplexes each channel of data bits of an N channel multiplexed optical data signal to one of a plurality of output terminals in accordance with the routing bit(s) of each data channel received in the N channel multiplexed optical data signal. In one embodiment, each data channel includes multiple routing bits enabling greater demultiplexer selectivity.
摘要翻译：基于Sagnac门的自路由光信号交换节点根据在所述多个输出终端中接收的每个数据信道的路由比特来将N信道复用光数据信号的数据比特的每个信道解复用到多个输出终端中的一个 N信道复用光数据信号。在一个实施例中，每个数据信道包括多个路由位，从而能够实现更高的解复用器选择性。

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