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    • 35. 发明授权
    • Floating-point arithmetic processing apparatus
    • 浮点算术处理装置
    • US5931895A
    • 1999-08-03
    • US789430
    • 1997-01-29
    • Hiromichi YamadaFumio MurabayashiTatsumi YamauchiNoriyasu IdoYoshikazu KiyoshigeTakahiro NishiyamaEiki Kamada
    • Hiromichi YamadaFumio MurabayashiTatsumi YamauchiNoriyasu IdoYoshikazu KiyoshigeTakahiro NishiyamaEiki Kamada
    • G06F7/38G06F5/01G06F7/00G06F7/483G06F7/74G06F7/76G06F7/52
    • G06F5/012G06F7/483
    • A floating-point arithmetic processing apparatus has a circuit for generating a limit value for normalization shift by subtracting an exponent of the minimum value of a normalized number from a value of an exponent of an intermediate result, and a circuit for generating, as a normalization shift number, smaller one of a shift number necessary for making the mantissa of the intermediate result a normalized number and the limit value for normalization shift. The floating-point arithmetic processing apparatus further has a circuit having a circuit for detecting a condition for overflow before the rounding process and a circuit for generating a value in the case of overflow, so that a predetermined value is delivered as a final result only when the overflow condition is detected before the rounding process but in the other case, a result obtained by performing the normalization process and the rounding process is delivered. When no overflow takes place before the rounding process but overflow occurs after the rounding process, the result obtained by performing the normalization process and the rounding process is delivered as a final result.
    • 一种浮点运算处理装置,具有通过从中间结果的指数的值减去归一化数的最小值的指数来生成用于归一化偏移的极限值的电路,以及生成作为归一化的归一化的电路 移位数,使中间结果的尾数所需的移位数中的较小的一个是归一化数,以及归一化移位的极限值。 浮点运算处理装置还具有电路,该电路具有用于检测在舍入处理之前的溢出条件的电路和用于在溢出的情况下产生值的电路,从而仅当预定值仅在 在舍入处理之前检测到溢出条件,但是在另一种情况下,通过执行归一化处理和舍入处理获得的结果被传送。 在四舍五入处理之前没有发生溢出,而在舍入处理后发生溢出的情况下,通过执行归一化处理和舍入处理获得的结果作为最终结果被传递。
    • 40. 发明授权
    • Semiconductor integrated circuit apparatus
    • 半导体集成电路装置
    • US06590425B2
    • 2003-07-08
    • US09887065
    • 2001-06-25
    • Fumio MurabayashiTatsumi YamauchiTakashi HottaHiromichi Yamada
    • Fumio MurabayashiTatsumi YamauchiTakashi HottaHiromichi Yamada
    • H03K19096
    • H03K19/00338
    • There is disclosed a circuit apparatus which is highly tolerant to noises and operates at a higher speed than a conventional completely complementary static CMOS circuit. To achieve this, the circuit apparatus features a plurality of CMOS static logic circuits which are series-connected and potential setting circuitry which is connected to the output parts of these logic circuits and sets the outputs of the output parts to a low level in synchronization with a clock signal, thus propagating signals by operation of the NMOS circuit. In other words, a signal propagation delay occurs only when the N-type logic block conducts. Therefore, circuit operation is speeded up and &agr; particle noise and noises due to charge redistribution effect or leakage current can be prevented. There is also disclosed a parallel data processing apparatus which features such logic circuitry, the data processing apparatus having both a plurality of data processing units, each having a processor and a memory, and a plurality of hard disks.
    • 公开了一种电路装置,其高度耐受噪声并以比传统的完全互补的静态CMOS电路更高的速度工作。 为了实现这一点,电路装置具有串联连接的多个CMOS静态逻辑电路和连接到这些逻辑电路的输出部分的电位设置电路,并将输出部分的输出与 时钟信号,从而通过NMOS电路的操作传播信号。 换句话说,信号传播延迟仅在N型逻辑块导通时才发生。 因此,可以防止电路操作加剧,并且可以防止由于电荷再分配效应或漏电流引起的α粒子噪声和噪声。 还公开了一种具有这种逻辑电路的并行数据处理装置,数据处理装置具有多个数据处理单元,每个数据处理单元具有处理器和存储器,以及多个硬盘。