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1. 发明授权

US5009477A Optical interconnect arrangement 失效
标题翻译：光互连装置
公开(公告)号：US5009477A
公开(公告)日：1991-04-23
申请号：US350962
申请日：1989-05-12
申请人： Rodney C. Alferness , Zigmantas L. Budrikis , David W. Hagelbarger , Herwig W. Kogelnik , Arun N. Netravali
发明人： Rodney C. Alferness , Zigmantas L. Budrikis , David W. Hagelbarger , Herwig W. Kogelnik , Arun N. Netravali
IPC分类号： G02B6/30 , G02B6/12 , G02B6/28 , G02F1/313 , G06E3/00 , H04Q3/52 , H04Q11/00
CPC分类号： G06E3/006 , G02B6/2804 , G02B6/2848 , H04Q11/0005 , H04Q2011/0049 , H04Q2011/0052
摘要： An arrangement for butt coupling of waveguide electrooptic plates to form a crossbar switch. The arrangement includes a stack of M splitter plates, each of which routes an injected optical signal to one of N outputs, and a stack of N combiner plates, each of which routes the signal of a selected one of M inputs to a common output. The stack of splitter plates is rotated with respect to the stack of combiner plates and the output signal ports of the splitter plates are coupled to the input signal ports of the combiner plates, so that each output of an splitter plate is connected to a different combiner plate. Within each splitter plate there is a fan-out network of waveguide electrooptic couplers and each coupler, under electric control, routes signals from one input to either one of two outputs. With j levels of such interconnected couplers 2.sup.j output are developed. The combiner plates have an identical architecture but with a signal flow in the reverse direction. Butt coupling of the splitter and combiner plates is achieved by employing splitter and combiner plates of a different crystal cut, by interposing polarization rotation means between two stacks, or by including polarization rotation means within the splitter plates, the combiner plates or both.
摘要翻译：用于对接波导电光板以形成交叉开关的布置。该装置包括一组M个分离器板，每个分配板将注入的光信号路由到N个输出中的一个输出端，以及一组N个组合板，每个组合板将M个输入中选定的一个信号的信号路由到公共输出。分离板的堆叠相对于组合板的堆叠旋转，并且分离板的输出信号端口耦合到组合板的输入信号端口，使得分离板的每个输出连接到不同的组合器盘子。在每个分离板内，有一个波导电光耦合器的扇出网络，每个耦合器在电气控制下，将信号从一个输入传送到两个输出中的任一个。随着j级的这种互连耦合器2j的输出被开发出来。组合板具有相同的结构，但具有相反方向的信号流。分流器和组合板的对接耦合通过采用不同晶体切割的分离器和组合板，通过在两个叠层之间插入偏振旋转装置，或者通过在分离板，组合板或两者内包括偏振旋转装置来实现。

2. 发明授权

US4554656A Method and system for controlling the interconnecting of a plurality of local data networks 失效
标题翻译：用于控制多个本地数据网络的互连的方法和系统
公开(公告)号：US4554656A
公开(公告)日：1985-11-19
申请号：US407145
申请日：1982-08-11
申请人： Zigmantas L. Budrikis , Arun N. Netravali
发明人： Zigmantas L. Budrikis , Arun N. Netravali
IPC分类号： H04L12/28 , H04J3/02
CPC分类号： H04L12/5692 , H04L12/2801
摘要： This disclosure relates to the instant method and system for controlling the interconnecting of a plurality of local communications networks. A source station and a destination station may respectively be adapted to be coupled to at least one communications channel of a communications path, which path includes a plurality of channels, each channel being assignable to at least one of a plurality of local data networks. The respective stations are adapted to determine the home network of the other respective stations with which the respective stations may communicate. Broadly, a source station, which has a message to transmit to a destination station, determines the home network of the destination and couples a first source receiver and a source transmitter to the home network of the destination for transmitting a packet from the source to the destination. A first packet may be transmitted when the source station acquires access to an idle channel of the destination home network. Further packets may be transmitted, not on the destination home network, but rather on the source home network. The source transmitter may be decoupled from the destination home network (if already so coupled) and may be coupled to the source home network for such further packet transmission.
摘要翻译：本公开涉及用于控制多个本地通信网络的互连的即时方法和系统。源站和目的地站可以分别适于耦合到通信路径的至少一个通信信道，该路径包括多个信道，每个信道可分配给多个本地数据网络中的至少一个。相应的站适于确定各个站可以与之通信的其他各个站的归属网络。广义地说，具有向目的地站发送的消息的源站确定目的地的归属网络，并将第一源接收机和源发射机耦合到目的地的归属网络，以将分组从源发送到目的地。当源站获取对目的地家庭网络的空闲信道的接入时，可以发送第一分组。可以在目的地家庭网络上而不是在源家庭网络上发送进一步的分组。源发射机可以与目的家庭网络（如果已经如此耦合）去耦合，并且可以耦合到源家庭网络用于进一步的分组传输。

3. 发明授权

US4705942A Pressure-sensitive light pen 失效
标题翻译：压敏光笔
公开(公告)号：US4705942A
公开(公告)日：1987-11-10
申请号：US813586
申请日：1985-12-26
申请人： Zigmantas L. Budrikis , Mehdi Hatamian , Peter S. Kubik , Arun N. Netravali
发明人： Zigmantas L. Budrikis , Mehdi Hatamian , Peter S. Kubik , Arun N. Netravali
IPC分类号： G06F3/037 , G06F3/033 , G06K7/10
CPC分类号： G06F3/03542
摘要： A light pen which includes a transparent rod at its pointing end through which light is directed to a photodetector that is fixedly positioned within the light pen. The rod is spring loaded and axially slidable in response to applied pressure, resulting in different light intensities being applied to the photodetector and further resulting in an output voltage generated by the photodetector that is directly related to the applied pressure.
摘要翻译：一种光笔，其在其指向端处包括透明杆，光通过所述透光杆定向到固定地定位在光笔内的光电检测器。杆被弹簧加载并且响应于施加的压力可轴向滑动，导致不同的光强度被施加到光电检测器，并且还导致由光电检测器产生的与施加的压力直接相关的输出电压。

4. 发明授权

US4796020A Method and apparatus for drawing antialiased lines and polygons 失效
标题翻译：绘制抗锯齿线和多边形的方法和装置
公开(公告)号：US4796020A
公开(公告)日：1989-01-03
申请号：US837886
申请日：1986-03-10
申请人： Zigmantas L. Budrikis , Arun N. Netravali
发明人： Zigmantas L. Budrikis , Arun N. Netravali
IPC分类号： G06F3/033 , G06F3/048 , G09G5/20 , G09G1/00
CPC分类号： G06F3/04845 , G09G5/20
摘要： A method and apparatus that employ precomputed line profiles to draw lines on a raster scan terminal with mostly horizontal or vertical "brush strokes" that develop the desired line profiles. The precomputed line profiles relate mostly to the slope of the drawn lines and to the position of the drawn lines between adjacent pixels on the raster scan terminal in the direction of the "brush strokes". A relatively small number of precomputed values is required, permitting the apparatus to operate at the low resolution of the raster scan and be driven advantageously by a look-up table. This results in a very fast operation of the system while leading to pleasing results. The method also takes into account corners and end-of-line conditions to avoid very abrupt and unnatural looking end points.
摘要翻译：一种使用预先计算的线轮廓在光栅扫描终端上绘制线的方法和装置，其中主要是水平或垂直的“笔触”，其形成所需的线轮廓。预先计算的线轮廓主要涉及在“画笔笔划”的方向上的绘制线的斜率和光栅扫描终端上的相邻像素之间的绘制线的位置。需要相对较少数量的预计算值，允许设备以光栅扫描的低分辨率操作并且有利地由查找表驱动。这导致系统的非常快速的操作，同时导致令人满意的结果。该方法还考虑到角落和行尾条件，以避免非常突然和不自然的看法。

5. 发明授权

US07966385B2 Methods and apparatus for virtual network configuration 有权
标题翻译：用于虚拟网络配置的方法和设备
公开(公告)号：US07966385B2
公开(公告)日：2011-06-21
申请号：US10449998
申请日：2003-05-30
申请人： Arun N. Netravali , Edward Stanley Szurkowski
发明人： Arun N. Netravali , Edward Stanley Szurkowski
IPC分类号： G06F15/177 , G06F15/16
CPC分类号： H04L12/4641 , H04L41/0803
摘要： A virtual network is configured in a communication system in such a manner that the virtual network is not required to have associated therewith any particular physical home location, or more generally any dedicated arrangement of physical network infrastructure elements. The communication system includes a communication network, such as a wireless network or the Internet, connectable to one or more user communication elements. Information is received from a given one of the communication elements indicating association of the given communication element with a particular virtual network, and responsive to the received information the virtual network is configured to include the given communication element. The virtual network may be comprised entirely of remote users. Emulated data network and voice network functionality may be provided to those users without requiring their corresponding entity to have a physical home location for data network and voice network elements, or any particular dedicated arrangement of such physical network infrastructure elements.
摘要翻译：在通信系统中配置虚拟网络，使得虚拟网络不需要与任何特定物理归属位置相关联，或者更一般地，物理网络基础设施元件的任何专用布置。通信系统包括可连接到一个或多个用户通信元件的通信网络，诸如无线网络或因特网。从指定给定通信元件与特定虚拟网络的关联的给定的一个通信元件接收信息，并且响应于所接收的信息，虚拟网络被配置为包括给定的通信元件。虚拟网络可以完全由远程用户组成。可以向这些用户提供仿真的数据网络和语音网络功能，而不需要其对应的实体具有用于数据网络和语音网络元件的物理归属位置，或者这些物理网络基础设施元件的任何特定的专用布置。

6. 发明申请

US20080273458A1 METHOD AND APPARATUS FOR MULTICAST SCHEDULING IN WIRELESS NETWORKS 有权
标题翻译：无线网络中多播调度的方法与装置
公开(公告)号：US20080273458A1
公开(公告)日：2008-11-06
申请号：US11744531
申请日：2007-05-04
申请人： Katherine H. Guo , Arun N. Netravali , Krishan K. Sabnani
发明人： Katherine H. Guo , Arun N. Netravali , Krishan K. Sabnani
IPC分类号： G08C15/00
CPC分类号： H04W72/1257 , H04L47/10 , H04L47/70 , H04L47/806 , H04L47/824 , H04W28/22 , H04W72/005 , H04W84/042
摘要： The invention includes a method and apparatus for scheduling multicast transmissions in a wireless network by selecting one of a plurality of multicast groups of a cellular region that is permitted to transmit information during a current timeslot. A method includes receiving data rate request values from wireless user terminals of each of a plurality of multicast groups, assigning a data rate to each multicast group using the data rate request values of wireless user terminals belonging to the respective multicast groups, selecting one of the multicast groups using the assigned data rates, and transmitting information to the selected one of the multicast groups at the associated assigned data rate. In one embodiment, the multicast scheduling algorithm may be a multicast proportional fairness (MPF) scheduling algorithm which attempts to maximize utility value of data received by individual users. In one embodiment, the multicast scheduling algorithm may be an inter-group proportional fairness (IPF) scheduling algorithm which attempts to maximize utility value of data received by multicast groups.
摘要翻译：本发明包括一种方法和装置，用于通过选择允许在当前时隙中发送信息的蜂窝区域的多个多播组中的一个来调度无线网络中的多播传输。一种方法包括从多个多播组中的每一个的无线用户终端接收数据速率请求值，使用属于各个多播组的无线用户终端的数据速率请求值向每个多播组分配数据速率，使用分配的数据速率的多播组，并且以相关联的分配数据速率将信息发送到所选择的一个多播组。在一个实施例中，多播调度算法可以是尝试最大化由个体用户接收的数据的效用值的多播比例公平（MPF）调度算法。在一个实施例中，多播调度算法可以是组间比例公平（IPF）调度算法，其尝试最大化由多播组接收的数据的效用值。

7. 发明授权

US6091394A Technique for holographic representation of images 失效
标题翻译：图像全息图的技术
公开(公告)号：US6091394A
公开(公告)日：2000-07-18
申请号：US923480
申请日：1997-09-04
申请人： Alfred M. Bruckstein , Robert J. Holt , Arun N. Netravali
发明人： Alfred M. Bruckstein , Robert J. Holt , Arun N. Netravali
IPC分类号： G06F3/14 , G09G5/32 , H04N1/41 , H04N7/26 , H04N7/46
CPC分类号： G06F3/14 , H04N19/59 , G09G2340/02
摘要： In a communications system, an image to be transmitted is holographically represented in accordance with the invention. Relying on a portion of the holographic representation selected from any part thereof, a receiver can provide an overall version of the transmitted image. This overall version is successively refined as the size of the aggregate portion of the representation received by the receiver increases.
摘要翻译：在通信系统中，根据本发明全息地表示要发送的图像。依靠从其任何部分中选出的全息图的一部分，接收机可以提供所发送的图像的整体版本。随着接收器接收到的表示的聚合部分的大小增加，该整体版本被相继地改进。

8. 发明授权

US5136377A Adaptive non-linear quantizer 失效
标题翻译：自适应非线性量子
公开(公告)号：US5136377A
公开(公告)日：1992-08-04
申请号：US626279
申请日：1990-12-11
申请人： James D. Johnston , Scott C. Knauer , Kim N. Matthews , Arun N. Netravali , Eric D. Petajan , Robert J. Safranek , Peter H. Westerink
发明人： James D. Johnston , Scott C. Knauer , Kim N. Matthews , Arun N. Netravali , Eric D. Petajan , Robert J. Safranek , Peter H. Westerink
IPC分类号： H03M7/30 , G06T9/00 , H04N7/015 , H04N7/26 , H04N7/28 , H04N7/30 , H04N7/50 , H04N11/04
CPC分类号： H04N19/94 , H04N19/126 , H04N19/139 , H04N19/14 , H04N19/154 , H04N19/172 , H04N19/176 , H04N19/60 , H04N19/61 , H04N19/63 , H04N19/10 , H04N19/115 , H04N19/124 , H04N19/146 , H04N19/152
摘要： A quantizer, with quantization control that is sensitive to input signal characteristics and to output buffer fullness responds to an input signal that is divided into blocks and DCT transformed. The transformed signal is analyzed to develop a brightness correction and to evaluate the texture of the image and the change in texture in the image. Based on these, and in concert with the human visual perception model, perception threshold signals are created for each subband of the transformed signal. Concurrently, scale factors for each subband of the transformed signal are computed, and a measure of variability in the transformed input signal is calculated. A measure of the fullness of the buffer to which the quantizer sends its encoded results is obtained, and that measure is combined with the calculated signal variability to develop a correction signal. The correction signal modifies the perception threshold signals to develop threshold control signals that are applied to the quantizer. The scale factors are also applied to the quantizer, as well as a global target distortion measure.

9. 发明授权

US5128756A High definition television coding arrangement with graceful degradation 失效
标题翻译：高定义电视编码装置与严重降解
公开(公告)号：US5128756A
公开(公告)日：1992-07-07
申请号：US625349
申请日：1990-12-11
申请人： James D. Johnston , Scott C. Knauer , Kim N. Matthews , Arun N. Netravali , Eric D. Petajan , Robert J. Safranek , Peter H. Westerink
发明人： James D. Johnston , Scott C. Knauer , Kim N. Matthews , Arun N. Netravali , Eric D. Petajan , Robert J. Safranek , Peter H. Westerink
IPC分类号： H03M7/30 , G06T9/00 , H04N7/015 , H04N7/26 , H04N7/32 , H04N7/50 , H04N11/04
CPC分类号： H04N19/895 , H04N19/37 , H04N19/50 , H04N19/61
摘要： Graceful degradation for digitally encoded HDTV signals is achieved by appropriately coding the image to provide a controllable degradation of chosen image characteristics, such as temporal degradation, spatial degradation, and dynamic range degradation. In the temporal degradation approach of this invention, the resolution of movement suffers when noise is introduced. In the spatial degradation approach, the spatial resolution of the image is sacrificed. In the range degradation approach, the dynamic range of the signals is sacrificed. The graceful degradation is achieved by dividing the transmitted signal into two or more parts, such as parts A, B and C. Part A is given the heaviest error-correcting code; part B is given a "medium" error correcting code; and part C the is given the least powerful error correcting code (or perhaps none at all). A receiver that is close to the transmitter most likely receives parts A, B and C. A receiver that is farther away gets a noisier signal might and, perhaps, correctly receive only parts A and B. A receiver that is at the limits of the transmitter range might receive correctly only part A. Of course, the signals of parts A, B and C are constructed in a hierarchical fashion so that part A provides basic signal information; part B augments the basic information to produce a better picture; and part C augments part A plus B to produce the highest resolution picture.

10. 发明授权

US5018129A Dual rail dilated switching networks 失效
标题翻译：双轨扩张交换网络
公开(公告)号：US5018129A
公开(公告)日：1991-05-21
申请号：US321048
申请日：1989-03-09
申请人： Arun N. Netravali , Krishnan Padmanabhan
发明人： Arun N. Netravali , Krishnan Padmanabhan
IPC分类号： H04M3/18 , H04B10/02 , H04Q3/52 , H04Q3/68 , H04Q11/04
CPC分类号： H04Q3/68
摘要： A method for realizing, and a structure for implementing a switching network employing 2.times.2 switches. The network is dilated in that none of the 2.times.2 switches concurrently carry an active signal. The method for realizing such a network alters a given non-dilated network by replacing each 2.times.2 switch in the non-dilated network with a dual rail switch having a pair of 2.times.2 interconnected switches, and by replacing each link in the non-dilated network with a pair links. The final output of the dilated network is obtained by adding a combiner final stage which combines the pairs of signals to form output signals that parallel the output signals of the given non-dilated network.

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