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    Optimal location of a digital sync pattern
    21.
    发明授权
    Optimal location of a digital sync pattern 有权
    数字同步模式的最佳位置

    公开(公告)号：US06826245B1

    公开(公告)日：2004-11-30

    申请号：US09570372

    申请日：2000-05-12

    Applicant: Christopher T. Brown ,  Phares Grey

    Inventor： Christopher T. Brown ,  Phares Grey

    IPC: H04L700

    CPC classification number: H04L7/08 ,  G11B2020/1287

    Abstract: Method and system for optimally estimating the location of each of a sequence of two or more synchronization patterns in a digital signal bit stream. A first reference location for a sync pattern is determined. A Boolean product or other product of the sync pattern (of length S) with S consecutive bit values of the digital stream is formed, for each of a selected consecutive sequence of candidates for a second reference location of the sync pattern within a window of selected length. A candidate reference location that yields the largest (or smallest) product value within the window is estimated to be a second or “next” reference location of the sync pattern, if the product value is at least equal to (or, alternatively, is no greater than) a selected threshold value. The sync pattern used for testing the digital stream can be varied from one location to another. The number of bit matches or the number of bit non-matches can be used to determine an optimal reference location for the sync pattern.

    Abstract translation: 用于最佳地估计数字信号比特流中的两个或多个同步模式的序列中的每一个的位置的方法和系统。 确定同步模式的第一参考位置。 针对所选择的窗口内的同步图案的第二参考位置的所选择的连续候选序列中的每一个，形成具有数字流的S个连续比特值的同步模式（长度为S）的布尔乘积或其他乘积 长度。 如果产品值至少等于（或者替代地，不是），则产生窗口内的最大（或最小）乘积值的候选参考位置被估计为同步模式的第二或“下一个”参考位置 大于）选定的阈值。 用于测试数字流的同步模式可以从一个位置变化到另一个位置。 可以使用位匹配的数量或位不匹配的数量来确定同步模式的最佳参考位置。

    Compositions, methods and polymers
    23.
    发明授权
    Compositions, methods and polymers 有权
    组合物，方法和聚合物

    公开(公告)号：US08440785B2

    公开(公告)日：2013-05-14

    申请号：US12828121

    申请日：2010-06-30

    Applicant: Christopher T. Brown ,  Chad Landis ,  Elena E. Sheina

    Inventor： Christopher T. Brown ,  Chad Landis ,  Elena E. Sheina

    IPC: C08G75/00

    CPC classification number: H01B1/127 ,  C07D495/04 ,  C07D495/14 ,  C07D513/14 ,  C08G61/12 ,  C08G61/123 ,  C08G61/126 ,  C08G2261/124 ,  C08G2261/141 ,  C08G2261/3162 ,  C08G2261/3243 ,  C08G2261/334 ,  C08G2261/344 ,  C08G2261/364 ,  C08G2261/414 ,  C08G2261/91 ,  C09B57/004 ,  C09B57/007 ,  C09B57/08 ,  C09B69/008 ,  C09B69/109 ,  H01L51/0003 ,  H01L51/0015 ,  H01L51/0043 ,  H01L51/0051 ,  Y02P20/582

    Abstract: A composition comprising a homopolymer or a copolymer comprising bithiophene units for use in, for example, low band gap materials including uses in organic photovoltaic active layers. The band gap and other properties can be engineered by polymerization methods including selection of monomer structure and ratio of monomer components. In addition, a dimer adapted for making alternating copolymers further comprising one first monomer moiety comprising at least one bithiophene moiety compound covalently linked to one second monomer moiety comprising a different bithiophene moiety or at least one moiety that is not a bithiophene. The composition can be copolymerized to form an alternating copolymer that can be further processed to form a polymeric film used in a printed organic electronic device. A series of novel copolymers are designed that would allow fabrication of materials with tailor made electronic and/or mechanical properties that can be easily manipulated through molecules chemical structure and potentially result in long term stability under ambient conditions that can be advantageous for use in organic electronics (e.g., OPVs, OLEDs, OFETs). Improved methods are disclosed for making monomers comprising a benzo[2,1-b:3,4-b′]dithiophene moiety that are useful as electronics materials.

    Abstract translation: 包含均聚物或包含双噻吩单元的共聚物的组合物，其用于例如用于有机光伏活性层中的低带隙材料。 可以通过包括选择单体结构和单体组分的比例的聚合方法来设计带隙和其它性质。 此外，适于制备交替共聚物的二聚体还包含一个第一单体部分，其包含至少一个共价连接到包含不同双噻吩部分的一个第二单体部分或至少一个不是二噻吩的部分的双噻吩部分化合物。 该组合物可以共聚以形成可进一步加工以形成印刷有机电子器件中使用的聚合物膜的交替共聚物。 一系列新型共聚物被设计成允许制造具有定制的电子和/或机械性质的材料，其可以通过分子化学结构容易地操作，并且潜在地在环境条件下导致长期稳定性，这对于用于有机电子 （例如，OPV，OLED，OFET）。 公开了用于制备包含可用作电子材料的苯并[2,1-b：3,4-b']二噻吩部分的单体的改进方法。

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