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    • 1. 发明申请
    • INTEGRATED CIRCUIT DEVICE AND METHOD FOR DETERMINING AN INDEX OF AN EXTREME VALUE WITHIN AN ARRAY OF VALUES
    • 集成电路装置和方法,用于确定数值范围内极值的指标
    • WO2012104674A1
    • 2012-08-09
    • PCT/IB2011/050419
    • 2011-01-31
    • FREESCALE SEMICONDUCTOR, INC.MOSKOVICH, IliaAMIR, AviramBARAK, ItzhakBEN ZEEV, Eliezer
    • MOSKOVICH, IliaAMIR, AviramBARAK, ItzhakBEN ZEEV, Eliezer
    • G06F9/06G06F9/30
    • G06F17/30336G06F9/30021G06F9/30036
    • An integrated circuit device (105) comprises at least one digital signal processor, DSP, module (100), the at least one DSP module (100) comprising a plurality of data registers (140) and at least one data execution unit, DEU, module (120) arranged to execute operations on data stored within the data registers (140). The at least one DEU module (120) is arranged to, in response to receiving an extreme value index instruction (210), compare a previous extreme value (425) located within a first data register set (220, 230) of the DSP module (100) with at least one input vector data value (440, 445, 450, 455) located within a second data register set (240, 250) of the DSP module (100), and determine an extreme value thereof. The at least one DEU module (120) is further arranged to, if the determined extreme value comprises an input vector data value (440, 445, 450, 455) located within the second data register set (240, 250), store the determined extreme value in the first data register set (220, 230), determine an index value for the determined extreme value, and store the determined index value in the first data register set (220, 230).
    • 集成电路装置(105)包括至少一个数字信号处理器DSP,模块(100),所述至少一个DSP模块(100)包括多个数据寄存器(140)和至少一个数据执行单元DEU, 模块(120)被布置成对存储在数据寄存器(140)内的数据执行操作。 所述至少一个DEU模块(120)被布置成响应于接收到极值索引指令(210)而比较位于DSP模块的第一数据寄存器组(220,230)内的先前极值(425) (100),其具有位于所述DSP模块(100)的第二数据寄存器组(240,250)内的至少一个输入向量数据值(440,445,450,455),并确定其极值。 如果所确定的极值包括位于第二数据寄存器组(240,250)内的输入向量数据值(440,445,450,455),则所述至少一个DEU模块(120)还被布置为: 第一数据寄存器组(220,230)中的极值确定所确定的极值的索引值,并将所确定的索引值存储在第一数据寄存器组(220,230)中。
    • 4. 发明申请
    • DEVICE AND METHOD FOR COMPUTING A FUNCTION VALUE OF A FUNCTION
    • 用于计算功能函数值的装置和方法
    • WO2012098436A1
    • 2012-07-26
    • PCT/IB2011/050276
    • 2011-01-21
    • FREESCALE SEMICONDUCTOR, INC.MOSKOVICH, IliaGLASNER, RoyLACHOVER, Dmitry
    • MOSKOVICH, IliaGLASNER, RoyLACHOVER, Dmitry
    • G06F1/02
    • G06F17/10G06F1/02G06F2101/10
    • A device (10) for computing a function value of a function F comprises a memory (18), a truncator unit (14), a selector unit (16), and an evaluator unit (20). The memory (18) contains a look-up table (19) comprising a set of entries (L1; L2; L3; L4), each of which entries having associated with it a domain (D1; D2; D3; D4) and an approximation function (F1; F2; F3; F4) for approximating the function F on the associated domain. The truncator unit (14) is arranged to truncate or round a first value X1 to generate a second value X2. The selector unit (16) is arranged to select an entry (L1; L2; L3; L4) of the lookup-table (19) according to the second value X2, thus selecting the approximation function (F1; F2; F3; F4) that is associated with the selected entry. The evaluator unit (20) is arranged to determine the function value of the selected approximation function (F1; F2; F3; F4) at the first value X1. The device (10) may be integrated in a digital signal processor (DSP). A method for computing a function value is also disclosed.
    • 用于计算功能F的功能值的装置(10)包括存储器(18),截短器单元(14),选择器单元(16)和评估器单元(20)。 存储器(18)包含查找表(19),其包括一组条目(L1; L2; L3; L4),每个条目具有与其相关联的域(D1; D2; D3; D4)和 近似函数(F1; F2; F3; F4),用于近似关联域上的函数F. 截断器单元(14)被布置成截断或舍入第一值X1以产生第二值X2。 选择器单元(16)被配置为根据第二值X2来选择查找表(19)的条目(L1; L2; L3; L4),从而选择近似函数(F1; F2; F3; F4) 这与所选条目相关联。 评估器单元(20)被布置成以第一值X1确定所选择的近似函数(F1; F2; F3; F4)的函数值。 设备(10)可以集成在数字信号处理器(DSP)中。 还公开了一种用于计算功能值的方法。