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    • 16. 发明授权
    • Method and apparatus for reducing rounding error when evaluating binary
floating point polynomials
    • 评估二进制浮点多项式时减少舍入误差的方法和装置
    • US5646876A
    • 1997-07-08
    • US424032
    • 1995-04-18
    • Roger A. Smith
    • Roger A. Smith
    • G06F7/552G06F7/38
    • G06F7/552G06F2207/5523G06F7/483G06F7/49947
    • Rounding error can be reduced when evaluating binary floating point polynomials utilizing a Floating Point Unit (58) by first computing the sum of products of second and higher order polynomial terms. Next, the Floating Point Unit (58) adds a zero.sup.th level term to the product of a first order coefficient and an independent variable to form a "Big" term. The Floating Point Unit (58) calculates as a "Little" term the rounding error resulting from the computation of the "Big" term. The "Little" term is then added to the sum of products of higher order terms to form an "Intermediate" term. Finally, the Floating Point Unit (58) adds the "Big" term to the "Intermediate" term to form the polynomial result corrected by the rounding error introduced by the computation of the low order terms.
    • 当使用浮点单元(58)评估二进制浮点多项式时,首先计算第二和更高阶多项式项的乘积之和,可以减少舍入误差。 接下来,浮点单元(58)将零级水平项添加到一阶系数和独立变量的乘积以形成“大”项。 浮点单元(58)计算出由“大”项计算产生的舍入误差的“小”项。 然后将“小”术语加到高阶项的总和中以形成“中级”术语。 最后,浮点单元(58)将“大”项添加到“中间”项,形成通过计算低阶项引入的舍入误差校正的多项式结果。
    • 20. 发明申请
    • AUTOMATIC PROVISIONING OF A REMOTE TEST HEAD OF A COMBINED IP/TELEPHONY/CABLE NETWORK
    • 组合IP /电话/电缆网络的远程测试头的自动提供
    • US20100110894A1
    • 2010-05-06
    • US12441972
    • 2007-09-19
    • Roger A. Smith
    • Roger A. Smith
    • H04L12/26
    • H04L43/50H04L12/2856H04L12/4641
    • In a telecommunications network that includes: a Digital Subscriber Line Access Multiplexer (DSLAM) (4) that has a DSLAM ID assigned thereto, a test head (2) coupled to the DSLAM (4) including a VLAN ID and a MAC address, and an auto-provisioning server (10), a public IP network is created between the auto-provisioning server (10) and a Test Operations Support System (OSS) (14) coupled to the telecommunications network. A private IP network is created between the test head (2) and the auto-provisioning server (10). The auto-provisioning server (10) acts as a gateway for the dispatch of data from the test head (2) to the Test OSS, and vice versa, across the private VLAN network and the public IP network.
    • 在电信网络中,包括:具有分配给其的DSLAM ID的数字用户线路接入复用器(DSLAM)(4),耦合到包括VLAN ID和MAC地址的DSLAM(4)的测试头(2),以及 自动配置服务器(10),在自动配置服务器(10)和耦合到电信网络的测试操作支持系统(OSS)(14)之间创建公共IP网络。 在测试头(2)和自动配置服务器(10)之间创建专用IP网络。 自动配置服务器(10)充当用于从专用VLAN网络和公共IP网络将数据从测试头(2)发送到测试OSS的网关,反之亦然。