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    • 23. 发明授权
    • Integrated hierarchical memory overlay having invariant address space span that inactivates a same address space span in main memory
    • 集成的分层存储器覆盖具有不变的地址空间跨度,使主存储器中的相同地址空间跨度失效
    • US06209061B1
    • 2001-03-27
    • US09032969
    • 1998-03-02
    • Marvin D. NelsonRandy J. Matthews
    • Marvin D. NelsonRandy J. Matthews
    • G06F1208
    • G06F12/0888
    • It has been determined that considerable data which is written to stacks is of the type that does not require long term retention (i.e., it is only required to be valid for the duration of a procedure or function which created it). Accordingly, when a stack is employed to handle such data (and other similar data), invalidation and writes to main memory that ordinarily accompany accesses of such data (when the stack is held in a cache memory) can be avoided. The invention therefore improves memory performance by providing an overlay memory, to which is assigned a set of main memory addresses that are utilized for stack operations. When data is either read or written from/to the overlay memory, there is no further communication “downstream” to either a cache memory or main memory. In other words, the overlay memory is used for short term storage and accesses to the overlay memory are invisible to other memory elements of the system. There is thus no need to invalidate any data and nor to write such data to main memory. As a result, substantially improved memory operations result.
    • 已经确定,写入堆栈的大量数据是不需要长期保留的类型(即,仅需要在创建它的过程或功能的持续时间内有效)。 因此,当采用堆栈来处理这种数据(和其他类似的数据)时,可以避免通常伴随这种数据的访问(当堆栈被保存在高速缓冲存储器中时)对主存储器的无效和写入。 因此,本发明通过提供覆盖存储器来改善存储器性能,向其分配用于堆栈操作的一组主存储器地址。 当数据从覆盖存储器读取或写入数据时,无法向高速缓冲存储器或主存储器进一步的“下游”通信。 换句话说,重叠存储器用于短期存储,并且对该重叠存储器的访问对该系统的其它存储器元件是不可见的。 因此,不需要使任何数据无效,也不需要将这样的数据写入主存储器。 结果,实现了显着改善的存储器操作。
    • 25. 发明授权
    • Disk array having redundant storage and methods for incrementally
generating redundancy as data is written to the disk array
    • 具有冗余存储的磁盘阵列和用于在数据写入磁盘阵列时递增地生成冗余的方法
    • US5537534A
    • 1996-07-16
    • US386582
    • 1995-02-10
    • Douglas L. VoigtMarvin D. Nelson
    • Douglas L. VoigtMarvin D. Nelson
    • G06F3/06A61P9/00G06F11/10G11B20/12G06F11/00
    • G06F11/1076G06F2211/1009G06F2211/1059
    • A data storage system has a disk array having multiple storage disks and a disk array controller coupled to the disk array to coordinate data transfer to and from the storage disks. The disk array is configured into multiple stripes where each stripe extends across multiple ones of the storage disks. Additionally, each stripe consists of multiple segments of storage space where each segment is a portion of the stripe that resides on a single storage disk in the disk array. A memory manager is provided to manage memory allocation for storing user data redundantly according to parity redundancy techniques. The memory manager maintains a partial stripe pointer to reference individual stripes in the disk array and a segment fill pointer to references individual segments in the referenced stripe. These pointers are used to select a non-filled stripe and individual segments in that stripe. The memory manager writes user data to a selected segment and incrementally determines a parity value for the stripe after each segment is written. The parity value is based upon the user data contained in those segments of the stripe that have been written. The empty segments in the stripe are not managed during the write process and thus are not included in the incremental parity generation.
    • 数据存储系统具有具有多个存储盘的磁盘阵列和耦合到磁盘阵列的磁盘阵列控制器,以协调与存储磁盘的数据传输。 磁盘阵列配置为多个条带,其中每个条带跨越多个存储磁盘。 此外,每个条带由多个存储空间段组成,其中每个段是驻留在磁盘阵列中的单个存储磁盘上的条带的一部分。 提供存储器管理器来管理用于根据奇偶冗余技术冗余地存储用户数据的存储器分配。 内存管理器维护一个部分条带指针来引用磁盘阵列中的各个条带,以及一个段填充指针,以引用引用的条带中的各个段。 这些指针用于选择该条带中未填充的条带和各个段。 存储器管理器将用户数据写入所选择的段,并且在每个段被写入之后递增地确定条带的奇偶校验值。 奇偶校验值基于包含在已经写入的条带的那些段中的用户数据。 在写入过程中,条带中的空段不被管理,因此不包括在增量奇偶校验生成中。
    • 29. 发明授权
    • Capacitive humidity transducer
    • 电容式湿度传感器
    • US4345301A
    • 1982-08-17
    • US237007
    • 1981-02-23
    • Marvin D. Nelson
    • Marvin D. Nelson
    • G01N27/22H05K1/18H01G7/00
    • G01N27/225
    • A capacitive humidity transducer having an electrically non-conductive dielectric base carrying a pair of electrically conductive coatings deposited directly on opposite respective sides of the non-conductive base to form parallel capacitor plates. The conductive coatings are each arranged in a configuration of a plurality of side-by-side forked legs with the legs of the electrically conductive elements being positioned in a facing relationship. One end of each of the electrically conductive coatings is provided with electrical connectors for attaching the transducer to respective electrically conductive circuits which may be on a printed circuit board. The dielectric base is arranged to be hygroscopic whereby atmospheric humidity provides a corresponding variation in the dielectric constant of the base to affect the capacitance of the transducer.
    • 一种电容式湿度传感器,其具有承载一对导电涂层的非导电电介质基底,其直接沉积在非导电基底的相对的相对侧上以形成并联电容器板。 导电涂层各自布置成多个并排叉脚的构造,导电元件的腿被定位成面对的关系。 每个导电涂层的一端设置有电连接器,用于将传感器附接到可能在印刷电路板上的相应导电电路。 电介质基底被布置成吸湿性,由此大气湿度提供基底的介电常数的相应变化以影响换能器的电容。