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    • 42. 发明授权
    • Method for synchronization of peripherals with a central processing unit in an embedded system
    • 外设与嵌入式系统中的中央处理单元同步的方法
    • US08095707B2
    • 2012-01-10
    • US12194060
    • 2008-08-19
    • Xiaoqian ZhangZhiyong GuanQi Li
    • Xiaoqian ZhangZhiyong GuanQi Li
    • G06F3/00G06F5/00
    • G06F1/12
    • A method and apparatus for synchronizing I/O peripherals with a CPU in an embedded system is discussed. The method involves receiving an address from the CPU in response to a read and/or write access, translating the address received from the CPU to identify a I/O peripheral to be accessed, disabling the operation of the CPU and synchronizing a memory from the CPU clock domain to the clock domain of the identified I/O peripheral. Upon completion of the read/write access, the identified I/O peripheral sends an acknowledgment, the memory is then synchronized from the clock domain of the I/O peripheral to the CPU clock domain and the operation of the CPU is then enabled.In another embodiment, if the acknowledgement from the identified I/O peripheral is not received within a predefined time duration, reserved data is sent to the CPU and the operation/access can be restarted.
    • 讨论了嵌入式系统中的I / O外设与CPU同步的方法和装置。 该方法包括响应于读和/或写访问从CPU接收地址,翻译从CPU接收的地址以识别要访问的I / O外设,禁止CPU的操作并使来自 CPU时钟域到所识别的I / O外设的时钟域。 在完成读/写访问后,所识别的I / O外设发送确认,然后将存储器从I / O外设的时钟域同步到CPU时钟域,然后启用CPU的操作。 在另一个实施例中,如果在预定义的持续时间内未接收到来自所识别的I / O外围设备的确认,则保留的数据被发送到CPU,并且可以重新启动操作/访问。
    • 47. 发明申请
    • Processing of magnesium-boride superconductor wires
    • 镁硼化物超导体线的加工
    • US20050163644A1
    • 2005-07-28
    • US11030817
    • 2005-01-07
    • Cornelis ThiemeAlexander OttoGilbert RileyQi LiYibing Huang
    • Cornelis ThiemeAlexander OttoGilbert RileyQi LiYibing Huang
    • H01L39/14H01L39/24B22F7/04
    • H01L39/141H01L39/2487
    • A method of making a high density Mg—B superconducting article includes providing a packed powder sheath, said powder comprising a source of magnesium and boron, subjecting the packed powder sheath to a symmetric deformation, said deformation selected to elongate the packed powder sheath to form a wire while retaining the free flow of particles within the powder core, subjecting the wire to high reduction rolling, said high reduction rolling selected to reduce the wire thickness by 40 to 95% and heating the rolled article to improve the superconducting properties of the article. A superconducting article comprised of one or more elongated metal matrix regions containing one or more embedded elongated superconducting Mg—B regions running the full length of the article is disclosed, wherein the superconducting Mg—B regions have a density greater than 95% of the theoretical density, and a transition temperature in zero field of 30 K.
    • 一种制造高密度Mg-B超导体制品的方法包括提供一种填充粉末鞘,所述粉末包含镁和硼源,对填充的粉末鞘进行对称变形,所述变形被选择以延长填充的粉末鞘以形成 电线,同时保持颗粒在粉末芯内的自由流动,对钢丝进行高度还原轧制,选择所述高压下轧制以将钢丝厚度减少40至95%,并加热轧制制品以改善制品的超导性能 。 公开了一种由一个或多个细长的金属基质区域组成的超导体制品,该金属基质区域含有一个或多个在制品整个长度上的嵌入式细长超导Mg-B区域,其中超导Mg-B区域的密度大于理论值的95% 密度,零场中的转变温度为30K。