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187 条记录 (耗时 0.039 秒)

    Stabilized shields for magnetic recording heads
    32.
    发明申请
    Stabilized shields for magnetic recording heads 有权
    磁记录头稳定屏蔽

    公开(公告)号：US20090279213A1

    公开(公告)日：2009-11-12

    申请号：US12151921

    申请日：2008-05-09

    申请人： Yan Wu ,  Glen Garfunkel ,  Min Li ,  Yuzuru Iwai ,  Moris Dovek

    发明人： Yan Wu ,  Glen Garfunkel ,  Min Li ,  Yuzuru Iwai ,  Moris Dovek

    IPC分类号： G11B5/33

    CPC分类号： G11B5/3163 ,  G11B5/3912 ,  G11B5/398

    摘要： A basic design is disclosed for bottom shield (S1) and top shield (S2) of the reader shields in a magnetic read-write head. The critical part of new design includes an antiferromagnetic film which pins an antiferromagnetically coupled trilayer (AFCT). The simplest embodiment for top shield, for example, would be a film sequence of FM/Ru/FM/AFM. This replaces the normal top shield design which typically comprises a ferromagnetic seed layer and a thicker plated ferromagnetic film. Processes for manufacturing these shields are also described.

    摘要翻译： 公开了一种读写器的屏蔽罩（S1）和屏蔽罩（S2）在磁读写头中屏蔽的基本设计。 新设计的关键部分包括引导反铁磁耦合三层（AFCT）的反铁磁膜。 例如，用于顶部屏蔽的最简单的实施例将是FM / Ru / FM / AFM的胶片序列。 这代替通常的顶层屏蔽设计，其通常包括铁磁种子层和较厚的镀层铁磁膜。 还描述了用于制造这些屏蔽的工艺。

    Back Channel Communication
    34.
    发明申请
    Back Channel Communication 有权
    后通道通讯

    公开(公告)号：US20080263413A1

    公开(公告)日：2008-10-23

    申请号：US12100355

    申请日：2008-04-09

    申请人： Massimo Sorbara ,  Patrick Duvaut ,  Yan Wu

    发明人： Massimo Sorbara ,  Patrick Duvaut ,  Yan Wu

    IPC分类号： G06F11/07

    CPC分类号： H04L12/66 ,  H04B3/32

    摘要： Included are embodiments for back channel communication. At least one embodiment of a method includes receiving data at customer premises equipment and determining at least one error in the received data. Some embodiments include formatting the determined error for communication to a central office and sending the formatted error to the central office via a back channel.

    摘要翻译： 包括用于反向信道通信的实施例。 方法的至少一个实施例包括在客户驻地设备处接收数据并确定接收到的数据中的至少一个错误。 一些实施例包括将所确定的错误格式化为中央局的通信，并通过后向信道将格式化的错误发送到中心局。

    ATM Header Compression Using Hash Tables
    35.
    发明申请
    ATM Header Compression Using Hash Tables 有权
    使用哈希表的ATM头压缩

    公开(公告)号：US20080151903A1

    公开(公告)日：2008-06-26

    申请号：US12042930

    申请日：2008-03-05

    申请人： Yan Wu ,  Song Bi ,  Timothy Bornemisza

    发明人： Yan Wu ,  Song Bi ,  Timothy Bornemisza

    IPC分类号： H04L12/56

    CPC分类号： H04L12/5601 ,  H04L2012/5652

    摘要： Disclosed are exemplary techniques for compressing ATM cells by substituting reduced headers for the original headers. A header table may be maintained at the transmitting end whereby headers are stored in table entries based on a table index generated from a hash function applied to the headers. A copy of the header table may be maintained at the receiving end and may be updated by populating idle cells with header table contents. Upon receipt of a reduced ATM cell at the receiving end, the reduced header may be replaced with a full header obtained from the copy of the header table maintained at the receiving end. The present invention further provides techniques for registration and management of hash collisions.

    摘要翻译： 公开了用于通过用缩小的报头替换原始报头来压缩ATM信元的示例性技术。 可以在发送端维护头表，由此基于从应用于报头的散列函数生成的表索引，将报头存储在表条目中。 标题表的副本可以在接收端保持，并且可以通过用标题表内容填充空闲小区来更新。 在接收端接收到减少的ATM信元时，可以用从保持在接收端的报头表的副本获得的全标头替换减少的报头。 本发明还提供了用于哈希冲突的注册和管理的技术。

    Systems and Methods for Improved Bit-Loading for Discrete Multi-Tone Modulated Multiple Latency Applications
    37.
    发明申请
    Systems and Methods for Improved Bit-Loading for Discrete Multi-Tone Modulated Multiple Latency Applications 有权
    用于离散多音调制多时延应用的改进位加载的系统和方法

    公开(公告)号：US20070110176A1

    公开(公告)日：2007-05-17

    申请号：US11559772

    申请日：2006-11-14

    申请人： Yan Wu ,  Lujing Cai ,  William Scholtz ,  Ehud Langberg

    发明人： Yan Wu ,  Lujing Cai ,  William Scholtz ,  Ehud Langberg

    IPC分类号： H04K1/10

    CPC分类号： H04L27/2608 ,  H04L1/0006 ,  H04L1/0009 ,  H04L1/0057 ,  H04L1/0058 ,  H04L1/006 ,  H04L1/007 ,  H04L5/14

    摘要： Systems and methods for performing bit loading in a dual latency data transmission system. In a computer network, such as an XDSL-based network, carrier channels are allocated between two latency paths. Error sensitive information is transmitted over a latency path employing one or more forward error correction techniques. Latency sensitive information that is relatively more tolerant of errors is transmitted over the other latency path. Rather than employing the lowest coding gain for carrier channels having the two different latency paths, the highest coding gain for each path is used by applying different target S-N-R margins for carrier channels having different latency paths.

    摘要翻译： 用于在双延迟数据传输系统中执行比特加载的系统和方法。 在诸如基于XDSL的网络的计算机网络中，在两个等待时间路径之间分配载波信道。 误差敏感信息通过采用一个或多个前向纠错技术的等待时间路径传输。 通过另一个等待时间路径发送相对更容忍错误的延迟敏感信息。 不是对具有两个不同等待时间路径的载波信道采用最低的编码增益，而是通过对具有不同等待时间路径的载波信道应用不同的目标S-N-R边缘来使用每个路径的最高编码增益。