公开(公告)号：US10824395B2

公开(公告)日：2020-11-03

申请号：US16243133

申请日：2019-01-09

申请人： FUJITSU LIMITED

发明人： Kenichi Kitamura

IPC分类号： G06F7/548 ,  G06F7/544

摘要： An arithmetic processing device includes a coefficient memory storing coefficients of a Taylor series expansion of a trigonometric function, a multiply-add arithmetic unit, a first bypass path supplying an output of the multiply-add arithmetic unit to a register file, an OR circuit calculating OR of a sign bit of the output of the multiply-add arithmetic unit and a least significant bit of a second input, a first selector selecting either a first input y or a value “1.0” an EOR circuit calculating an EOR of a first bit of the second input and a sign bit of an output of the first selector, and a second bypass path supplying the least significant bit of the second input to a coefficient selector. The multiply-add arithmetic unit executes an auxiliary instruction repeatedly while modifying a coefficient index from a maximum value to a minimum value to calculate sin (x).

公开(公告)号：US20170364624A1

公开(公告)日：2017-12-21

申请号：US15465906

申请日：2017-03-22

申请人： Toshiba Memory Corporation

发明人： Sadatoshi MURAKAMI

IPC分类号： G06F17/50 ,  G06F7/523 ,  G06F7/50 ,  H01L21/67 ,  G06F7/548

CPC分类号： G06F7/548 ,  G06F7/50 ,  G06F7/523 ,  H01J21/00

摘要： A method of calculating a form according to an embodiment relates to a method of calculating a processed depth of a material to be etched when the material to be etched is etched using a mask material. The method comprises calculating a first opening solid angle Ω1 based on an opening of a mask pattern, the first opening solid angle Ω1 defining an incident quantity of ions contributing to etching, and calculating a second opening solid angle Ω2 based on an opening of a mask pattern, the second opening solid angle Ω2 defining an incident quantity of depositions. A processed depth at a process point where the material to be etched is etched is calculated based on a linear equation using the first opening solid angle Ω1 and the second opening solid angle Ω2 as variables.

公开(公告)号：US20170350687A1

公开(公告)日：2017-12-07

申请号：US15612857

申请日：2017-06-02

申请人： Lenovo (Beijing) Limited

发明人： Shuxian Zhang

IPC分类号： G01B7/30 ,  G06F7/548 ,  G06F1/16

CPC分类号： G01B7/30 ,  G06F1/1615 ,  G06F1/1616 ,  G06F1/1677 ,  G06F7/548 ,  H04B1/3838

摘要： One embodiment provides a method, including: identifying, using at least one sensor, an angle value between a first body and a second body of an electronic device; determining, using a processor, whether the angle value between the first body and the second body is greater than a predetermined threshold value; and correcting, responsive to determining that the angle value between the first body and the second body is greater than the predetermined threshold value, a decision threshold. Other aspects are described and claimed.

公开(公告)号：US20170180169A1

公开(公告)日：2017-06-22

申请号：US15366273

申请日：2016-12-01

申请人： NXP USA, Inc.

发明人： Olivier Vincent Doare ,  Dominique Delbecq ,  Gilles Montoriol

IPC分类号： H04L27/00 ,  G06F7/548 ,  G06F7/544

CPC分类号： H04L27/0014 ,  G06F7/5446 ,  G06F7/548 ,  H04L27/206 ,  H04L2027/0016

摘要： A phase shifter controller arranged to generate phase shift control signals for at least one phase shifter. The phase shifter controller is arranged to receive a first phase value θ1, receive a second phase value θ2, and output phase shift control signals. The phase shifter controller comprises a digital synthesizer arranged to compute a first digital phase shift control value based on the received first phase value θ1, and compute a second digital phase shift control value based on the received second phase value θ2. The phase shifter controller further comprises digital to analogue converters arranged to generate the phase shift control signals based on the derived first and second digital phase shift control values.

公开(公告)号：US20170090871A1

公开(公告)日：2017-03-30

申请号：US14883889

申请日：2015-10-15

申请人： VIA Alliance Semiconductor Co., Ltd.

发明人： Wei WANG ,  Xinan JIANG ,  Chengxin YIN ,  Huaisheng ZHANG ,  Tian SHEN ,  Bing YU

IPC分类号： G06F7/548

CPC分类号： G06F7/548

摘要： A method for computing trigonometric functions, performed by an ALU (Arithmetic Logic Unit) in coordination with an SFU (Special Function Unit), is introduced to contain at least the following steps. The ALU computes a remainder r and a reduction value x* corresponding to an input parameter x. The SFU computes an intermediate function f(x*) corresponding to the reduction value x*. The ALU computes a multiplication of the reduction value x* by the intermediate function f(x*) as the computation result of a trigonometric function.

公开(公告)号：US09600236B2

公开(公告)日：2017-03-21

申请号：US14486891

申请日：2014-09-15

申请人： Vivante Corporation

发明人： Mike M. Cai ,  Lefan Zhong

IPC分类号： G06F7/38 ,  G06F7/556 ,  G06F1/035 ,  G06F7/57 ,  G06F7/552 ,  G06F7/548

CPC分类号： G06F7/556 ,  G06F1/0356 ,  G06F7/548 ,  G06F7/5525 ,  G06F7/57 ,  G06F2101/08 ,  G06F2101/10 ,  G06F2101/12

摘要： Mathematical functions are computed in a single pipeline performing a polynomial approximation (e.g. a quadratic approximation, or the like); and one or more data tables corresponding to at least one of the RCP, SQRT, EXP or LOG functions operable to be coupled to the single pipeline according to one or more opcodes; wherein the single pipeline is operable for computing at least one of RCP, SQRT, EXP or LOG functions according to the one or more opcodes. SIN and COS are also computed using the pipeline according to the approximation ((−1)^IntX)*Sin(π*Min(FracX, 1.0−FracX)/Min(FracX, 1.0−FracX). A pipeline portion approximates Sin(π*FracX) using tables and interpolation and a subsequent stage multiplies this approximation by FracX. For input arguments of x close 1.0. LOG 2(x−1)/(x−1) is computed using a first pipeline portion using tables and interpolation and subsequently multiplied by (x−1). A DIV operation may also be performed with input arguments scaled up to avoid underflow as needed.

公开(公告)号：US20130246493A1

公开(公告)日：2013-09-19

申请号：US13871143

申请日：2013-04-26

申请人： AMO Development, LLC

发明人： Guang-ming Dai ,  Virendra N. Mahajan

IPC分类号： G06F7/548

CPC分类号： G06F7/548 ,  A61B3/1015 ,  A61B3/103 ,  A61B3/107 ,  A61F9/008 ,  A61F9/00806 ,  A61F9/00812 ,  A61F2009/00848 ,  A61F2009/0088 ,  G06F17/10

摘要： Systems, methods, and software for determining a set of analytical or numerical polynomials that is orthonormal over circular or noncircular pupils are described. Closed-form orthonormal polynomials for circular, annular, hexagonal, elliptical, rectangular, and square pupils are derived. Such techniques can be applied to ray tracing as in the optical design and wavefront fitting from measurement as in the optical testing. These approaches can also be applied to wavefront reconstruction in adaptive optics.

摘要翻译： 描述了用于确定在圆形或非圆形瞳孔上是正交的一组分析或数值多项式的系统，方法和软件。 导出圆形，环形，六边形，椭圆形，矩形和方形瞳孔的闭合形式的正交多项式。 这种技术可以应用于如在光学测试中的光学设计和波前拟合中的光线跟踪。 这些方法也可以应用于自适应光学中的波前重构。

公开(公告)号：US20120265796A1

公开(公告)日：2012-10-18

申请号：US13085616

申请日：2011-04-13

申请人： Siva Swaroop Vontela ,  Vidya Prabhu ,  Priyabrata Kundu

发明人： Siva Swaroop Vontela ,  Vidya Prabhu ,  Priyabrata Kundu

IPC分类号： G06F17/11 ,  G06F7/548

CPC分类号： G06F7/5446 ,  G06F7/548

摘要： A double-step CORDIC algorithm is implemented for conventional signed arithmetic using multiple iteration stages in which at least one stage implements decision postponing, in which the decision for each stage is delayed until the next stage. In one implementation, the decision for the previous stage is implemented in parallel with the execution of CORDIC equation functions for the current stage. Implementing the double-step CORDIC with decision postponing algorithm can increase the speed of the CORDIC function compared to prior-art CORDIC implementations.

摘要翻译： 对于使用多个迭代阶段的常规带符号算法实现双步CORDIC算法，其中至少一个阶段执行决策延期，其中每个阶段的决定被延迟到下一阶段。 在一个实现中，前一阶段的决定与当前阶段的CORDIC方程函数的执行并行实现。 与现有技术的CORDIC实现相比，使用决策推迟算法实现双步CORDIC可以提高CORDIC功能的速度。

公开(公告)号：US20100121792A1

公开(公告)日：2010-05-13

申请号：US12521985

申请日：2008-01-07

申请人： Qiong Yang ,  Mo Chen ,  Xiaoou Tang

发明人： Qiong Yang ,  Mo Chen ,  Xiaoou Tang

IPC分类号： G06N5/02 ,  G06F15/18 ,  G06F7/548

CPC分类号： G06F16/9024

摘要： Directed graph embedding is described. In one implementation, a system explores the link structure of a directed graph and embeds the vertices of the directed graph into a vector space while preserving affinities that are present among vertices of the directed graph. Such an embedded vector space facilitates general data analysis of the information in the directed graph. Optimal embedding can be achieved by measuring local affinities among vertices via transition probabilities between the vertices, based on a stationary distribution of Markov random walks through the directed graph. For classifying linked web pages represented by a directed graph, the system can train a support vector machine (SVM) classifier, which can operate in a user-selectable number of dimensions.

摘要翻译： 描述了定向图嵌入。 在一个实现中，系统探索有向图的链接结构，并将有向图的顶点嵌入到向量空间中，同时保留存在于有向图的顶点之间的亲和度。 这样的嵌入向量空间有助于对有向图中的信息的一般数据分析。 基于通过有向图的马尔科夫随机游走的平稳分布，可以通过顶点之间的转移概率来测量顶点之间的局部亲和度来实现最佳嵌入。 为了对由有向图表示的链接的网页进行分类，系统可以训练支持向量机（SVM）分类器，其可以以用户可选择的维数操作。

公开(公告)号：US20050203980A1

公开(公告)日：2005-09-15

申请号：US10798757

申请日：2004-03-11

申请人： John Harrison ,  Ping Tang

发明人： John Harrison ,  Ping Tang

IPC分类号： G06F7/548 ,  G06F1/02

CPC分类号： G06F7/548

摘要： In one embodiment, the present invention includes a method for reducing an input argument x of a function to a range reduced value r according to a first reduction sequence, approximating a polynomial for a corresponding function of r having a dominant portion f(A)+σr, and obtaining a result for the function using the polynomial.

摘要翻译： 在一个实施例中，本发明包括一种根据第一简化序列将函数的输入参数x减小到范围缩小值r的方法，对于具有主要部分f（A）+的对应函数r的近似多项式， sigmar，并使用多项式获得函数的结果。