专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO1997024651A1 LNS-BASED COMPUTER PROCESSOR AND METHOD OF USE THEREOF 审中-公开
标题翻译：基于LNS的计算机处理器及其使用方法
公开(公告)号：WO1997024651A1
公开(公告)日：1997-07-10
申请号：PCT/US1996019011
申请日：1996-11-27
申请人： MOTOROLA INC. , PAN, Shao Wei , SHAY-PING, T., Wang
发明人： MOTOROLA INC.
IPC分类号： G06F01/03
CPC分类号： G06F7/5235 , G06F1/03 , G06F7/4833 , G06F2101/04
摘要： An LNS-based computer processor is provided for performing high-speed calculations that involve special function values. Special functions include transcendental and hyperbolic functions. The computer processor includes a decoder (11), a memory circuit (12) for storing a plurality of special function signals, a log converter (14), at least one processing element (16), and an inverse-log converter (18).
摘要翻译：提供了一种基于LNS的计算机处理器，用于执行涉及特殊功能值的高速计算。特殊功能包括超越和双曲线功能。计算机处理器包括：解码器（11），用于存储多个特殊功能信号的存储器电路（12），对数转换器（14），至少一个处理元件（16）和反向对数转换器（18）。

2. 发明申请

WO1986006517A1 FAST SINE AND COSINE GENERATING APPARATUS 审中-公开
标题翻译：快速发光装置
公开(公告)号：WO1986006517A1
公开(公告)日：1986-11-06
申请号：PCT/US1986000735
申请日：1986-04-10
申请人： AMERICAN TELEPHONE & TELEGRAPH COMPANY
发明人： AMERICAN TELEPHONE & TELEGRAPH COMPANY , GANAPATHY, Sundaram
IPC分类号： G06F01/02
CPC分类号： G06F1/0356 , G06F2101/04
摘要： Apparatus for developing fast sine and cosine functions via a division of the angle whose trigonometric function is to be developed into a plurality of component angles. Sine and cosine values of the component angles are obtained from look-up tables (10, 11, 12, 13, 14, 15) and appropriately combined (30). High computational speed is obtained by creating the plurality of component angles based on the radix used in the digital representation of the angle and, furthermore, by creating the component angles so that the look-up tables are approximately equal in size.
摘要翻译：用于通过将三角函数发展成多个分量角度的角度的分割来开发快速正弦和余弦函数的装置。从查找表（10,11,12,13,14,15）获得组合角度的正弦和余弦值并适当组合（30）。通过基于在角度的数字表示中使用的基数创建多个分量角度，并且此外，通过创建分量角度使得查找表的大小近似相等，可以获得高计算速度。

3. 发明申请

WO2013109694A1 HIGH ACCURACY SIN-COS WAVE AND FREQUENCY GENERATORS, AND RELATED SYSTEMS AND METHODS 审中-公开
标题翻译：高精度SIN-COS波和频率发生器及相关系统和方法
公开(公告)号：WO2013109694A1
公开(公告)日：2013-07-25
申请号：PCT/US2013/021844
申请日：2013-01-17
申请人： QUALCOMM INCORPORATED
发明人： HOYLE, David J.
IPC分类号： G06F1/035 , G06F1/03
CPC分类号： G06F1/0356 , G06F1/0342 , G06F1/0353 , G06F2101/04
摘要： High accuracy sin-cos wave and frequency generators, and related systems and methods. In non-limiting embodiments disclosed herein, the sin-cos wave generators can provide highly accurate sin-cos values for sin-cos wave generation with low hardware costs and small lookup table requirements. The embodiments disclosed herein may include a circuit to conduct an arithmetic approximation of a sin-cos curve based on a phase input. The circuit may be in communication with a point lookup table and a correction lookup table. The tables may receive the phase input and match the phase input to main sin-cos endpoints associated with the phase, and to a correction value for the phase. These values which are selected based on the phase input, may be communicated to a converter circuit where the arithmetic functions are applied to the values resulting in a sin-cos curve value.
摘要翻译：高精度正弦波和频率发生器及相关系统和方法。在本文公开的非限制性实施例中，正弦波发生器可以以低硬件成本和小的查找表要求为正弦波产生提供高精度的sin-cos值。本文公开的实施例可以包括基于相位输入进行sin-cos曲线的算术近似的电路。电路可以与点查找表和校正查找表通信。这些表可以接收相位输入并将相位输入匹配到与相位相关联的主sin-cos端点，以及相位的校正值。基于相位输入选择的这些值可以传送到转换器电路，其中将算术函数应用于产生sin-cos曲线值的值。

4. 发明申请

WO2011163208A3 CALCULATION OF TRIGONOMETRIC FUNCTIONS IN AN INTEGRATED CIRCUIT DEVICE 审中-公开
标题翻译：在集成电路设备中计算三角函数
公开(公告)号：WO2011163208A3
公开(公告)日：2012-04-19
申请号：PCT/US2011041221
申请日：2011-06-21
申请人： ALTERA CORP , LANGHAMMER MARTIN
发明人： LANGHAMMER MARTIN
IPC分类号： G06F7/548
CPC分类号： G06F7/548 , G06F1/03 , G06F7/483 , G06F7/5446 , G06F2101/04
摘要： Circuitry for computing a trigonometric function of an input includes circuitry for relating the input to another value to generate an intermediate value, circuitry for selecting one of the input and the intermediate value as a trigonometric input value, circuitry for determining respective initial values of a plurality of trigonometric functions for the trigonometric input value, and circuitry for deriving, based at least in part on a trigonometric identity, a final value of the first trigonometric function from the respective initial values of the plurality of trigonometric functions. The trigonometric function may be any of sine, cosine and tangent and their inverse functions. The trigonometric identities used allow a computation of a trigonometric function to be broken into pieces that either are easier to perform or can be performed more accurately.
摘要翻译：用于计算输入的三角函数的电路包括用于将输入与另一值相关以产生中间值的电路，用于选择输入和中间值之一作为三角输入值的电路，用于确定多个的相应初始值的电路用于三角输入值的三角函数的电路，以及用于至少部分地基于三角形标识从多个三角函数的相应初始值推导出第一三角函数的最终值的电路。三角函数可以是任何正弦，余弦和正切以及它们的反函数。所使用的三角形身份允许将三角函数的计算分解成更容易执行或可以更准确地执行的片段。

5. 发明申请

WO2008115107A1 A METHOD FOR USE IN A DIGITAL FREQUENCY SYNTHESIZER 审中-公开
标题翻译：一种用于数字频率合成器的方法
公开(公告)号：WO2008115107A1
公开(公告)日：2008-09-25
申请号：PCT/SE2007/050174
申请日：2007-03-20
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) , ZHANG, Yang
发明人： ZHANG, Yang
IPC分类号： G06F1/035
CPC分类号： G06F1/0356 , G06F2101/04
摘要： A method for use in a digital frequency synthesizer (100), the method comprising phase to amplitude conversion (120) of an output value of a phase accumulator (110) in said synthesizer (100), said conversion being carried out as an approximation (y) of a phase value (x) which corresponds to said output amplitude value, the method being characterized in that the approximation comprises a combination of a linear interpolation value and a second order sinusoidal value, the second order sinusoidal value being used as an error term to correct for errors in the linear interpolation value.
摘要翻译：一种在数字频率合成器（100）中使用的方法，所述方法包括在所述合成器（100）中的相位累加器（110）的输出值的相位到幅度转换（120），所述转换被执行为近似（ y），其对应于所述输出振幅值，所述方法的特征在于近似包括线性内插值和二阶正弦值的组合，二阶正弦值被用作误差用于纠正线性插补值中的错误。

6. 发明申请

WO01007992A1 METHOD AND SYSTEM FOR GENERATING A TRIGONOMETRIC FUNCTION 审中-公开
标题翻译：用于产生三角函数的方法和系统
公开(公告)号：WO01007992A1
公开(公告)日：2001-02-01
申请号：PCT/US2000/018334
申请日：2000-07-03
IPC分类号： G06F1/035
CPC分类号： G06F1/0356 , G06F2101/04
摘要： A method for generating a trigonometric function is provided that includes an input angle being received and automatically separated into a first component angle and a second component angle. A sine value for the input angle is automatically determined based upon the first and second component angles. A cosine value for the input angle is automatically determined based upon the first and second component angles. The trigonometric function is automatically generated based upon the sine and cosine values for the input angle.
摘要翻译：提供了一种用于产生三角函数的方法，其包括接收的输入角并且自动地分成第一分量角和第二分量角。基于第一和第二分量角自动确定输入角的正弦值。基于第一和第二分量角自动确定输入角的余弦值。根据输入角度的正弦和余弦值自动生成三角函数。

7. 发明申请

WO1996012223A1 NUMERICALLY CONTROLLED OSCILLATOR WITH COMPLEX EXPONENTIAL OUTPUTS USING RECURSION TECHNIQUE 审中-公开
标题翻译：使用恢复技术的具有复杂的外部输出的数字控制振荡器
公开(公告)号：WO1996012223A1
公开(公告)日：1996-04-25
申请号：PCT/US1995011909
申请日：1995-09-21
申请人： WESTINGHOUSE ELECTRIC CORPORATION
发明人： WESTINGHOUSE ELECTRIC CORPORATION , KROEGER, Brian, W. , BAIRD, Jeffrey, S.
IPC分类号： G06F07/548
CPC分类号： G06F1/022 , G06F2101/04
摘要： A numerically controlled oscillator that outputs a complex exponential value (sine and cosine). The numerically controlled oscillator inputs a scalar phase increment and uses the scalar phase increment to approximate a complex exponential phasor increment. A complex multiplier multiplies the exponential increment by an exponential value previously output from the oscillator to yield a multiplication result. A recursive amplitude normalizer, connected to the complex multiplier, normalizes the multiplication result to yield the complex exponential value.
摘要翻译：输出复数指数值（正弦和余弦）的数控振荡器。数字振荡器输入标量相位增量，并使用标量相位增量来近似复数指数相量增量。复数乘法器将指数增量乘以先前从振荡器输出的指数值，以产生乘法结果。连接到复数乘法器的递归幅度归一化器对乘法结果进行归一化以产生复指数值。

8. 发明申请

WO1989006009A1 PSEUDORANDOM DITHER FOR FREQUENCY SYNTHETIS NOISE 审中-公开
标题翻译： PSEUDORANDOM几次频率合成噪声
公开(公告)号：WO1989006009A1
公开(公告)日：1989-06-29
申请号：PCT/US1988004407
申请日：1988-12-08
申请人： QUALCOMM, INC.
发明人： QUALCOMM, INC. , KERR, Richard, J. , WEAVER, Lindsay, A.
IPC分类号： G06F07/38
CPC分类号： G06J1/00 , G06F1/0328 , G06F2101/04 , G06F2211/902
摘要： A method and apparatus for reducing spurious output noise in digital frequency synthesizers that employ a sine amplitude converter (16) connected to a Digital-to-Analog converter (18) for generating an analog waveform from sine amplitude data. The method comprises the steps of adding random or pseudorandom numbers which are scaled to have a predetermined magnitude to the sine amplitude data and transferring a resulting addend to the Digital-to-Analog converter (18). The apparatus comprises a summation circuit (22) connected between an output of the sine function converter (18) and an input of the digital-to-analog converter and connected to a random or pseudorandom number generator (24) at a second input. A scale element (26) adjusts the pseudorandom number magnitude to provide numbers having values in the range +/- 1/2 times a minimum quantization step or at least significant bit of the Digital-to-Analog converter (18) resolution where n is greater than or equal to 1.

9. 发明申请

WO1982002637A1 TABLE LOOK-UP OF NON-LINEAR FUNCTIONS USING REDUCED-SIZED ROM 审中-公开
标题翻译：使用减小尺寸的ROM查看非线性函数
公开(公告)号：WO1982002637A1
公开(公告)日：1982-08-05
申请号：PCT/US1982000086
申请日：1982-01-25
申请人： RCA CORP
发明人： RCA CORP , STROLLE CHRISTOPHER HUGH , SMITH TERRANCE RAYMOND , LEWIS HENRY GARTON JR , ACAMPORA ALFONSE , REITMEIER GLENN ARTHUR
IPC分类号： H04N05/02
CPC分类号： H04N9/78 , G06F1/0307 , G06F1/0353 , G06F1/0356 , G06F2101/04 , G06F2101/08 , G06F2101/10 , G06T3/00 , G09G5/395 , G11C7/00 , G11C8/04 , G11C8/16 , H04N9/646
摘要： A digital memory (10) which contains digital data words representative of a desired symmetrical transfer characteristic of a digital signal processor. Digital signals which are to be processed are applied to the address inputs of the memory (10), producing output signals in conformance with the desired transfer characteristic. Advantage is taken of the symmetrical nature of the response characteristic to minimize the size of the memory. Data words corresponding to only a portion of the full dynamic range of the digital signal processor are stored in the memory (10), and memory locations are addressed and read out in accordance with the value of a polarity-determining bit of the input digital signal, with the output signals being translated over the required full dynamic range in accordance with the value of the polarity-determining bit. In a preferred embodiment of the invention, the memory (10) is a random access memory, with stored data values being altered in response to a user control to change the transfer characteristic of the processor.
摘要翻译：数字存储器（10），其包含表示数字信号处理器的期望对称传送特性的数字数据字。要处理的数字信号被施加到存储器（10）的地址输入端，产生符合期望传输特性的输出信号。利用响应特性的对称性优点来最小化存储器的大小。仅对应于数字信号处理器的全部动态范围的一部分的数据字被存储在存储器（10）中，并且根据输入数字信号的极性确定位的值来寻址和读出存储单元，其中输出信号根据极性确定位的值在所需的全动态范围内转换。在本发明的优选实施例中，存储器（10）是随机存取存储器，响应于用户控制改变存储的数据值，改变处理器的传送特性。

10. 发明申请

WO2011163208A2 CALCULATION OF TRIGONOMETRIC FUNCTIONS IN AN INTEGRATED CIRCUIT DEVICE 审中-公开
标题翻译：在集成电路设备中计算三角函数
公开(公告)号：WO2011163208A2
公开(公告)日：2011-12-29
申请号：PCT/US2011/041221
申请日：2011-06-21
申请人： ALTERA CORPORATION , LANGHAMMER, Martin
发明人： LANGHAMMER, Martin
IPC分类号： G06F7/548
CPC分类号： G06F7/548 , G06F1/03 , G06F7/483 , G06F7/5446 , G06F2101/04
摘要： Circuitry for computing a trigonometric function of an input includes circuitry for relating the input to another value to generate an intermediate value, circuitry for selecting one of the input and the intermediate value as a trigonometric input value, circuitry for determining respective initial values of a plurality of trigonometric functions for the trigonometric input value, and circuitry for deriving, based at least in part on a trigonometric identity, a final value of the first trigonometric function from the respective initial values of the plurality of trigonometric functions. The trigonometric function may be any of sine, cosine and tangent and their inverse functions. The trigonometric identities used allow a computation of a trigonometric function to be broken into pieces that either are easier to perform or can be performed more accurately.
摘要翻译：用于计算输入的三角函数的电路包括用于将输入与另一值相关联以产生中间值的电路，用于选择输入和中间值之一作为三角输入值的电路，用于确定多个的相应初始值的电路用于三角输入值的三角函数的电路，以及用于至少部分地基于三角形身份从多个三角函数的相应初始值推导出第一三角函数的最终值的电路。三角函数可以是任何正弦，余弦和正切以及它们的反函数。所使用的三角形标识允许将三角函数的计算分解成更容易执行或可以更准确地执行的部分。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式