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1. 发明申请

US20140101215A1 DPD/BCD TO BID CONVERTERS 有权
标题翻译： DPD / BCD转换器
公开(公告)号：US20140101215A1
公开(公告)日：2014-04-10
申请号：US13644374
申请日：2012-10-04
申请人： Ahmed A. Ayoub , Hossam Aly Hassan Fahmy , Tarek Eldeeb
发明人： Ahmed A. Ayoub , Hossam Aly Hassan Fahmy , Tarek Eldeeb
IPC分类号： G06F7/38
CPC分类号： H03M7/02 , H03M7/12
摘要： A method and system for binary coded decimal (BCD) to binary conversion. The conversion includes obtaining a BCD significand corresponding to multiple decimal digits; generating, by a BCD/binary hardware converter and based on the BCD significand, multiple binary vectors corresponding to the multiple decimal digits; and calculating, by the BCD/binary hardware converter, a binary output by summing the multiple binary vectors.
摘要翻译：二进制编码十进制（BCD）到二进制转换的方法和系统。转换包括获得对应于多个十进制数字的BCD有效位数; 通过BCD /二进制硬件转换器和基于BCD有效位数生成对应于多个十进制数字的多个二进制向量; 并且由BCD /二进制硬件转换器通过对多个二进制向量求和来计算二进制输出。

2. 发明授权

US09143159B2 DPD/BCD to BID converters 有权
标题翻译： DPD / BCD到BID转换器
公开(公告)号：US09143159B2
公开(公告)日：2015-09-22
申请号：US13644374
申请日：2012-10-04
申请人： Ahmed A. Ayoub , Hossam Aly Hassan Fahmy , Tarek Eldeeb
发明人： Ahmed A. Ayoub , Hossam Aly Hassan Fahmy , Tarek Eldeeb
IPC分类号： G06F7/00 , H03M7/02 , H03M7/12
CPC分类号： H03M7/02 , H03M7/12
摘要： A method and system for binary coded decimal (BCD) to binary conversion. The conversion includes obtaining a BCD significand corresponding to multiple decimal digits; generating, by a BCD/binary hardware converter and based on the BCD significand, multiple binary vectors corresponding to the multiple decimal digits; and calculating, by the BCD/binary hardware converter, a binary output by summing the multiple binary vectors.
摘要翻译：二进制编码十进制（BCD）到二进制转换的方法和系统。转换包括获得对应于多个十进制数字的BCD有效位数; 通过BCD /二进制硬件转换器和基于BCD有效位数生成对应于多个十进制数字的多个二进制向量; 并且由BCD /二进制硬件转换器通过对多个二进制向量求和来计算二进制输出。

3. 发明授权

US08788560B2 Decimal elementary functions computation 失效
标题翻译：小数基本函数计算
公开(公告)号：US08788560B2
公开(公告)日：2014-07-22
申请号：US13293061
申请日：2011-11-09
申请人： Tarek Eldeeb , Hossam Aly Hassan Fahmy , Mahmoud Y. Hassan
发明人： Tarek Eldeeb , Hossam Aly Hassan Fahmy , Mahmoud Y. Hassan
IPC分类号： G06F7/38
CPC分类号： G06F7/544 , G06F2207/4911
摘要： A method for executing a decimal elementary function (DEF) computation from multiple decimal floating-point operands, including: extracting mantissae and exponents from the operands; generating normalized mantissae by shifting the mantissae based on the number of leading zeros; calculating a plurality of approximations for a logarithm of the first normalized mantissa; calculating, using the plurality of approximations for the logarithm, a plurality of approximations for a product of the second normalized mantissa and a sum based on the logarithm of the first normalized mantissa and an exponent; generating a plurality of shifted values by shifting the plurality of approximations for the product; generating a plurality of fraction components from the plurality of shifted values; calculating an antilog based on the plurality of fraction components; and outputting a decimal floating-point result of the DEF computation comprising a resultant mantissa based on the antilog and a resultant biased exponent.
摘要翻译：一种用于从多个十进制浮点运算执行十进制基本函数（DEF）计算的方法，包括：从操作数中提取mantissae和exponents; 通过基于前导零的数量移动镰刀生成归一化的镰刀; 计算第一标准化尾数的对数的多个近似值; 使用所述对数的所述近似来计算所述第二标准化尾数与基于所述第一标准化尾数和指数的对数的乘积的乘积的多个近似; 通过移动产品的多个近似来产生多个移位值; 从所述多个移位值生成多个分数分量; 基于多个分数分量计算反对数; 并输出DEF运算的十进制浮点运算结果，该结果包括基于反序号和合成偏移指数的合成尾数。

4. 发明申请

US20130117341A1 DECIMAL ELEMENTARY FUNCTIONS COMPUTATION 失效
标题翻译： DECIMAL ELEMENTARY功能计算
公开(公告)号：US20130117341A1
公开(公告)日：2013-05-09
申请号：US13293061
申请日：2011-11-09
申请人： Tarek Eldeeb , Hossam Aly Hassan Fahmy , Mahmoud Y. Hassan
发明人： Tarek Eldeeb , Hossam Aly Hassan Fahmy , Mahmoud Y. Hassan
IPC分类号： G06F7/42 , G06F7/44
CPC分类号： G06F7/544 , G06F2207/4911
摘要： A method for executing a decimal elementary function (DEF) computation from multiple decimal floating-point operands, including: extracting mantissae and exponents from the operands; generating normalized mantissae by shifting the mantissae based on the number of leading zeros; calculating a plurality of approximations for a logarithm of the first normalized mantissa; calculating, using the plurality of approximations for the logarithm, a plurality of approximations for a product of the second normalized mantissa and a sum based on the logarithm of the first normalized mantissa and an exponent; generating a plurality of shifted values by shifting the plurality of approximations for the product; generating a plurality of fraction components from the plurality of shifted values; calculating an antilog based on the plurality of fraction components; and outputting a decimal floating-point result of the DEF computation comprising a resultant mantissa based on the antilog and a resultant biased exponent.
摘要翻译：一种用于从多个十进制浮点运算执行十进制基本函数（DEF）计算的方法，包括：从操作数中提取出mantissae和exponents; 通过基于前导零的数量移动镰刀生成归一化的镰刀; 计算第一标准化尾数的对数的多个近似值; 使用所述对数的所述近似来计算所述第二标准化尾数与基于所述第一标准化尾数和指数的对数的乘积的乘积的多个近似; 通过移动产品的多个近似来产生多个移位值; 从所述多个移位值生成多个分数分量; 基于多个分数分量计算反对数; 并输出DEF运算的十进制浮点运算结果，该结果包括基于反序号和合成偏移指数的合成尾数。

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