利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

78 条记录 (耗时 0.037 秒)

    Recognition of a state machine in high-level integrated circuit description language code
    73.
    发明申请
    Recognition of a state machine in high-level integrated circuit description language code 有权
    识别状态机在高级集成电路描述语言代码

    公开(公告)号：US20050160384A1

    公开(公告)日：2005-07-21

    申请号：US10736967

    申请日：2003-12-15

    申请人： Michael Gilford ,  Gordon Walker ,  Jacob Tredinnick ,  Mark Dane ,  Michael Reynolds

    发明人： Michael Gilford ,  Gordon Walker ,  Jacob Tredinnick ,  Mark Dane ,  Michael Reynolds

    IPC分类号： G06F17/50

    CPC分类号： G06F17/5045 ,  G06F17/5022

    摘要： A method and apparatus for recognizing a state machine in circuit design in a high-level IC description language. The present invention analyzes high-level IC description language code, such as VHDL and Verilog®, of an IC design and extracts description information corresponding to a state machine. The description information can be, for example, the high-level IC description language code corresponding to the state machine, a state diagram of the state machine, a state table for the state machine, or other representation of the state machine. In one embodiment, the present invention identifies a set of one or more processes as defined by VHDL “process” statements. By identifying one or more clocked processes, one or more transition processes, and one or more output processes, the present invention provides a state machine summary to describe the state machine identified in the high-level IC description language code.

    摘要翻译： 一种在高级IC描述语言中识别电路设计中的状态机的方法和装置。 本发明分析IC设计中的诸如VHDL和Verilog的高级IC描述语言代码，并且提取与状态机相对应的描述信息。 描述信息可以是例如对应于状态机的高级IC描述语言代码，状态机的状态图，状态机的状态表或状态机的其他表示。 在一个实施例中，本发明识别由VHDL“过程”语句定义的一组或多个过程集合。 通过识别一个或多个时钟进程，一个或多个转换进程和一个或多个输出进程，本发明提供了一种状态机概要，以描述在高级IC描述语言代码中标识的状态机。

    Frequency division multiplexing of multiple data streams in a wireless multi-carrier communication system
    74.
    发明申请
    Frequency division multiplexing of multiple data streams in a wireless multi-carrier communication system 有权
    无线多载波通信系统中多个数据流的频分复用

    公开(公告)号：US20050135308A1

    公开(公告)日：2005-06-23

    申请号：US10968614

    申请日：2004-10-18

    申请人： Rajiv Vijayan ,  Gordon Walker ,  Raghu Krishnamoorthi ,  Ramaswamy Murali

    发明人： Rajiv Vijayan ,  Gordon Walker ,  Raghu Krishnamoorthi ,  Ramaswamy Murali

    IPC分类号： H04L27/28

    CPC分类号： H04L27/0008 ,  H04L5/0007 ,  H04L5/0041 ,  H04L5/0044 ,  H04L5/0051 ,  H04L5/0064 ,  H04L25/022 ,  H04L25/0226 ,  H04L25/0228 ,  H04L27/2604 ,  H04L27/2605 ,  H04L27/2647 ,  Y02D70/10

    摘要： Techniques for multiplexing multiple data streams using frequency division multiplexing (FDM) in an OFDM system are described. M disjoint “interlaces” are formed with U usable subbands. Each interlace is a different set of S subbands, where U=M·S. The subbands for each interlace are interlaced with the subbands for each of the other M−1 interlaces. M slots may be defined for each symbol period and assigned slot indices 1 through M. The slot indices may be mapped to interlaces such that (1) frequency diversity is achieved for each slot index and (2) the interlaces used for pilot transmission have varying distances to the interlaces used for each slot index, which improves channel estimation performance. Each data stream may be processed as data packets of a fixed size, and different numbers of slots may be used for each data packet depending on the coding and modulation scheme used for the data packet.

    摘要翻译： 描述了在OFDM系统中使用频分复用（FDM）来复用多个数据流的技术。 M个不相交的“交错”与U个可用的子带形成。 每个交错是S个子带的不同集合，其中U = M.S。 用于每个交错的子带与用于其它M-1交错的每个子带进行隔行扫描。 可以为每个符号周期和分配的时隙索引1到M定义M个时隙。时隙索引可以被映射到交织，使得（1）针对每个时隙索引实现频率分集，以及（2）用于导频传输的交织具有不同的 到每个时隙索引用于交织的距离，这提高了信道估计性能。 每个数据流可以被处理为固定大小的数据分组，并且根据用于数据分组的编码和调制方案，每个数据分组可以使用不同数量的时隙。

    Local and wide-area transmissions in a wireless broadcast network
    75.
    发明申请
    Local and wide-area transmissions in a wireless broadcast network 有权
    无线广播网络中的本地和广域传输

    公开(公告)号：US20050122928A1

    公开(公告)日：2005-06-09

    申请号：US10968787

    申请日：2004-10-18

    申请人： Rajiv Vijayan ,  Fuyun Ling ,  Gordon Walker ,  Ramaswamy Murali ,  Ashok Mantravadi ,  Anand Subramaniam ,  Krishnamurthy Viswanathan

    发明人： Rajiv Vijayan ,  Fuyun Ling ,  Gordon Walker ,  Ramaswamy Murali ,  Ashok Mantravadi ,  Anand Subramaniam ,  Krishnamurthy Viswanathan

    IPC分类号： H04L12/18 ,  H04L12/56 ,  H04W74/04 ,  H04W88/08 ,  H04J3/24

    CPC分类号： H04L5/0041 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0048 ,  H04L12/189 ,  H04W72/005

    摘要： To broadcast different types of transmission having different tiers of coverage in a wireless broadcast network, each base station processes data for a wide-area transmission in accordance with a first mode (or coding and modulation scheme) to generate data symbols for the wide-area transmission and processes data for a local transmission in accordance with a second mode to generate data symbols for the local transmission. The first and second modes are selected based on the desired coverage for wide-area and local transmissions, respectively. The base station also generates pilots and overhead information for local and wide-area transmissions. The data, pilots, and overhead information for local and wide-area transmissions are multiplexed onto their transmission spans, which may be different sets of frequency subbands, different time segments, or different groups of subbands in different time segments. More than two different types of transmission may also be multiplexed and broadcast.

    摘要翻译： 为了在无线广播网络中广播具有不同层次的不同类型的传输，每个基站根据第一模式（或编码和调制方案）处理广域传输的数据，以产生广域的数据符号 根据第二模式传输和处理用于本地传输的数据，以产生用于本地传输的数据符号。 分别基于广域和本地传输的期望覆盖来选择第一和第二模式。 基站还为本地和广域传输生成导频和开销信息。 用于本地和广域传输的数据，导频和开销信息被复用到它们的传输跨度，其可以是不同组的频率子带，不同时间段或不同时间段中的不同子带组。 多于两种不同类型的传输也可以被复用和广播。

    System and method for indexing and tracking multimedia streams for wireless multimedia transmission
    77.
    发明申请
    System and method for indexing and tracking multimedia streams for wireless multimedia transmission 审中-公开
    用于索引和跟踪用于无线多媒体传输的多媒体流的系统和方法

    公开(公告)号：US20050020201A1

    公开(公告)日：2005-01-27

    申请号：US10616585

    申请日：2003-07-09

    申请人： Richard Lane ,  Gordon Walker ,  Ramaswamy Murali ,  Chinnappa Ganapathy

    发明人： Richard Lane ,  Gordon Walker ,  Ramaswamy Murali ,  Chinnappa Ganapathy

    IPC分类号： H04L29/06 ,  H04H1/00

    CPC分类号： H04L65/4076 ,  H04L29/06027 ,  H04L65/607

    摘要： In addition to global index chunks that indicate the order of program portions in a multimedia stream carrying multiple multiplexed programs, index blocks are provided in data chunks of the stream that point to times when particular program portions arrive. This information can be used at the physical or transport layer of a wireless battery-powered receiver by, e.g., a simple state machine to energize the analog receiving circuitry only for as long as necessary to receive information pertaining to a desired program, thereby conserving battery power.

    摘要翻译： 除了指示携带多个多路复用程序的多媒体流中的程序部分的顺序的全局索引块之外，索引块被提供在指向特定程序部分到达的时间的数据流的数据块中。 该信息可以通过例如简单的状态机在无线电池供电的接收机的物理层或传输层上使用，以仅在需要接收与所需节目有关的信息的情况下激励模拟接收电路，从而节省电池 功率。

    Sugar beet membrane filtration process
    78.
    发明授权
    Sugar beet membrane filtration process 失效
    甜菜膜过滤过程

    公开(公告)号：US06406547B1

    公开(公告)日：2002-06-18

    申请号：US09618416

    申请日：2000-07-18

    申请人： Michael Donovan ,  Robert P. Jansen ,  Marc Hlavacek ,  Gordon Walker ,  John C. Williams

    发明人： Michael Donovan ,  Robert P. Jansen ,  Marc Hlavacek ,  Gordon Walker ,  John C. Williams

    IPC分类号： C13D316

    CPC分类号： C13B10/00 ,  C13B20/00 ,  C13B20/165

    摘要： A process for producing sugar from beets includes the step of filtering a sucrose-containing feed juice, which has been obtained by diffusion from sliced sugar beets, through a first ultrafiltration membrane that has a first molecular weight cutoff. This ultrafiltration step produces a first ultrafiltration permeate and a first ultrafiltration retentate. The first ultrafiltration permeate is filtered through a second ultrafiltration membrane that has a second molecular weight cutoff that is lower than the first molecular weight cutoff. This second ultrafiltration step produces a second ultrafiltration permeate and a second ultrafiltration retentate. The second ultrafiltration permeate is nanofiltered through a nanofiltration membrane, thereby producing a nanofiltration permeate and a nanofiltration retentate. The nanofiltration retentate has a higher concentration of sucrose on a dry solids basis than the feed juice in step (a), and can be used in evaporation and crystallization operations to produce crystals of white sugar. The process can optionally include ion exchange and/or electrodialysis purification steps, prior to or after the nanofiltration step. Recycle syrups can be treated with enzyme or a chromatographic separator to remove raffinose.

    摘要翻译： 从甜菜制备糖的方法包括将通过从切片的甜菜中扩散获得的含蔗糖的进料汁通过具有第一分子量截留值的第一超滤膜过滤的步骤。 该超滤步骤产生第一超滤渗透物和第一超滤滞留物。 第一超滤渗透物通过具有低于第一分子量截止值的第二分子量截止值的第二超滤膜过滤。 该第二超滤步骤产生第二超滤渗透物和第二超滤滞留物。 第二超滤渗透物通过纳滤膜进行纳滤，从而产生纳滤膜渗透物和纳滤膜渗余物。 纳米过滤滞留物在干固体基础上具有比步骤（a）中的进料汁更高的蔗糖浓度，并且可用于蒸发和结晶操作以产生白糖晶体。 该方法可任选地包括在纳滤过程之前或之后的离子交换和/或电渗析纯化步骤。 可以用酶或色谱分离器处理回收糖浆以除去棉子糖。