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    • 8. 发明授权
    • Transactional file system
    • 事务文件系统
    • US07418463B2
    • 2008-08-26
    • US11010820
    • 2004-12-13
    • Surendra VermaThomas J. MillerRobert G. Atkinson
    • Surendra VermaThomas J. MillerRobert G. Atkinson
    • G06F17/30
    • G06F17/30227Y10S707/959Y10S707/99931Y10S707/99932Y10S707/99937Y10S707/99938Y10S707/99942Y10S707/99944Y10S707/99952Y10S707/99953
    • A transactional file system wherein multiple file system operations may be performed as a transaction. An application specifies that file system-related operations are to be handled as a transaction, and the application is given a file handle associated with a transaction context. For file system requests associated with a transaction context, a file system component manages the operations consistent with transactional behavior. The component provides data isolation by providing multiple versions of a file by tracking copies of changed pages, such that transactional readers do not receive changes to a file made by transactional writers, until the transactional writer commits the transaction and the reader reopens the file. The component handles namespace logging operations in a multiple-level log that facilitates logging and recovery. Page data is logged separate from the main log, with a unique signature that enables the log to determine whether a page was fully flushed to disk.
    • 一种事务文件系统,其中可以执行多个文件系统操作作为事务。 应用程序指定文件系统相关操作将作为一个事务来处理,并且应用程序被赋予与事务上下文相关联的文件句柄。 对于与事务上下文相关联的文件系统请求,文件系统组件管理与事务行为一致的操作。 该组件通过跟踪更改的页面的副本来提供文件的多个版本来提供数据隔离,以便事务性读取器不会接收事务写入器所做的文件的更改,直到事务写入程序提交事务并且读取器重新打开该文件。 该组件处理多级日志中的命名空间日志记录操作,便于记录和恢复。 页面数据与主日志分开记录,具有唯一的签名,可使日志确定页面是否已完全刷新到磁盘。
    • 10. 发明授权
    • II-VI/III-V layered construction on InP substrate
    • InP衬底上的II-VI / III-V分层结构
    • US07126160B2
    • 2006-10-24
    • US10871424
    • 2004-06-18
    • Xiaoguang SunThomas J. MillerMichael A. Haase
    • Xiaoguang SunThomas J. MillerMichael A. Haase
    • H01L33/00
    • H01S5/183
    • A layered construction is provided comprising an InP substrate and alternating layers of II-VI and III-V materials. The alternating layers of II-VI and III-V materials are typically lattice-matched or pseudomorphic to the InP substrate. Typically the II-VI material is selected from the group consisting of ZnSe, CdSe, BeSe, MgSe, ZnTe, CdTe, BeTe, MgTe, ZnS, CdS, BeS, MgS and alloys thereof, more typically selected from the group consisting of CdZnSe, CdMgZnSe, BeZnTe, and BeMgZnTe alloys, and is most typically CdxZn1-xSe where x is between 0.44 and 0.54. Typically the III-V material is selected from the group consisting of InAs, AlAs, GaAs, InP, AlP, GaP, InSb, AlSb, GaSb, and alloys thereof, more typically selected from the group consisting of InP, InAlAs, GaInAs, AlInGaAs and GaInAsP alloys, and is most typically InP or InyAl1-yAs where y is between 0.44 and 0.52. In one embodiment, the layered construction forms one or more distributed Bragg reflectors (DBR's). In another aspect, the present invention provides a layered construction comprising: an InP substrate and a distributed Bragg reflector (DBR) having a reflectivity of 95% or greater which comprises no more than 15 layer pairs of epitaxial semiconductor materials. In another aspect, the present invention provides a laser comprising a layered construction according to the present invention. In another aspect, the present invention provides a photodetector comprising a layered construction according to the present invention.
    • 提供了包括InP衬底和II-VI和III-V材料的交替层的分层结构。 II-VI和III-V材料的交替层通常与InP衬底晶格匹配或伪构。 通常,II-VI材料选自ZnSe,CdSe,BeSe,MgSe,ZnTe,CdTe,BeTe,MgTe,ZnS,CdS,BeS,MgS及其合金,更典型地选自CdZnSe, CdMgZnSe,BeZnTe和BeMgZnTe合金,并且最典型的是Cd x Zn 1-x Se,其中x在0.44和0.54之间。 通常,III-V材料选自InAs,AlAs,GaAs,InP,AlP,GaP,InSb,AlSb,GaSb及其合金,更典型地选自InP,InAlAs,GaInAs,AlInGaAs 和GaInAsP合金,并且最典型地是InP或Al y Al 1-y,其中y在0.44和0.52之间。 在一个实施例中,分层结构形成一个或多个分布式布拉格反射器(DBR)。 另一方面,本发明提供了一种分层结构,其包括:InP衬底和具有95%或更大的反射率的分布式布拉格反射器(DBR),其包括不超过15层的外延半导体材料。 另一方面,本发明提供一种包括根据本发明的分层结构的激光器。 另一方面,本发明提供了一种包括根据本发明的分层结构的光电检测器。