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    • 1. 发明授权
    • Adder structure with midcycle latch for power reduction
    • 加法器结构带有中间锁闩,用于降低功率
    • US08086657B2
    • 2011-12-27
    • US12099973
    • 2008-04-09
    • Wilhelm HallerRolf SautterChristoph WandelUlrich Weiss
    • Wilhelm HallerRolf SautterChristoph WandelUlrich Weiss
    • G06F7/50
    • H03K19/0941H03K19/0008
    • A digital adder circuit comprising a plurality of logical stages in the carry logic of said adder circuit, for generating and propagating predetermined groups of operand bits, each stage implementing a predetermined logic function and processing input variables from a preceding stage and outputting result values to a succeeding stage static and dynamic logic in the carry network of a 4-bit adder, and with output from the first stage fed directly as an input (60, 62) to the third stage of the carry network. Preferably, stages having normally relatively high switching activities are implemented in static logic. Preferably, the first stage of its carry network is implemented in a static logic, and the rest of the stages in dynamic logic.
    • 一种数字加法器电路,包括在所述加法器电路的进位逻辑中的多个逻辑级,用于产生和传播预定的操作数位组,每个级实现预定的逻辑功能,并处理来自前一级的输入变量,并将结果值输出到 4位加法器的进位网络中的后级静态和动态逻辑,并且来自第一级的输出直接作为输入(60,62)馈送到进位网络的第三级。 优选地,具有通常相对较高切换活动的阶段在静态逻辑中实现。 优选地,其进位网络的第一级是以静态逻辑实现的,其余的级在动态逻辑中。
    • 2. 发明授权
    • Adder structure with midcycle latch for power reduction
    • 加法器结构带有中间锁闩,用于降低功率
    • US07406495B2
    • 2008-07-29
    • US10973365
    • 2004-10-26
    • Wilhelm HallerRolf SautterChristoph WandelUlrich Weiss
    • Wilhelm HallerRolf SautterChristoph WandelUlrich Weiss
    • G06F7/50
    • G06F7/506G06F7/508G06F2207/3872H03K19/0941
    • A digital adder circuit comprising a plurality of logical stages in the carry logic of said adder circuit, for generating and propagating predetermined groups of operand bits, each stage implementing a predetermined logic function and processing input variables from a preceding stage and outputting result values to a succeeding stage with static and dynamic logic in the carry network of a 4-bit adder, and with output from the first stage fed directly as an input (60, 62) to the third stage of the carry network. Preferably, stages having normally relatively high switching activities are implemented in static logic. Preferably, the first stage of its carry network is implemented in a static logic, and the rest of the stages in dynamic logic.
    • 一种数字加法器电路,包括在所述加法器电路的进位逻辑中的多个逻辑级,用于产生和传播预定的操作数位组,每个级实现预定的逻辑功能,并处理来自前一级的输入变量,并将结果值输出到 在4位加法器的进位网络中具有静态和动态逻辑的后级,并且来自第一级的输出直接作为输入(60,62)馈送到进位网络的第三级。 优选地,具有通常相对较高切换活动的阶段在静态逻辑中实现。 优选地,其进位网络的第一级是以静态逻辑实现的,其余的级在动态逻辑中。
    • 4. 发明申请
    • Novel adder structure with midcycle latch for power reduction
    • 用于功率降低的具有中间锁存器的新型加法器结构
    • US20050138103A1
    • 2005-06-23
    • US10973365
    • 2004-10-26
    • Wilhelm HallerRolf SautterChristoph WandelUlrich Weiss
    • Wilhelm HallerRolf SautterChristoph WandelUlrich Weiss
    • G06F7/50G06F7/506G06F7/508H03K19/094
    • G06F7/506G06F7/508G06F2207/3872H03K19/0941
    • The present invention relates to computer processors. In particular it relates to a method and respective system for operating a digital adder circuit comprising a plurality of logical stages in the carry logic of said adder circuit, for generating and propagating predetermined groups of operand bits, each stage implementing a predetermined logic function and processing input variables from a preceding stage and outputting result values to a succeeding stage. In order to reduce power consumption of adders and concurrently increasing adder speed it is proposed to implement a mixture of static and dynamic logic in the carry network of a 4-bit adder, and to feed output from the first stage directly as an input (60, 62) to the third stage of the carry network. Preferably, stages having normally relatively high switching activities are implemented in static logic. Preferably, the first stage of its carry network is implemented in a static logic, and the rest of the stages in dynamic logic.
    • 本发明涉及计算机处理器。 具体地说,涉及用于操作数字加法器电路的方法和相应系统,该数字加法器电路包括在所述加法器电路的进位逻辑中的多个逻辑级,用于产生和传播预定的操作数组组,每个级实现预定的逻辑功能和处理 来自前一级的输入变量并将结果值输出到后一级。 为了降低加法器的功耗并同时增加加法器速度,提出在4位加法器的进位网络中实现静态和动态逻辑的混合,并将第一级的输出直接作为输入(60 ,62)到进位网络的第三阶段。 优选地,具有通常相对较高切换活动的阶段在静态逻辑中实现。 优选地,其进位网络的第一级是以静态逻辑实现的,其余的级在动态逻辑中。