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    • 51. 发明授权
    • Methods for developing an integrated circuit chip design
    • 开发集成电路芯片设计的方法
    • US06526562B1
    • 2003-02-25
    • US09568398
    • 2000-05-10
    • Elie HaddadJames MonacoThomas TomazinWilliam C. Anderson
    • Elie HaddadJames MonacoThomas TomazinWilliam C. Anderson
    • G06F1750
    • G06F17/5045G06F17/5022
    • A method for developing an integrated circuit chip design includes the steps of developing an architecture specification defining the functions of the chip, developing a microarchitecture specification based on the architecture specification, developing a functional and structural model of the chip based on the microarchitecture specification, designing software tools for use with the chip based on the architecture specification, and designing chip verification tools based on the microarchitecture specification. The activities associated with chip development are divided into phases which may be performed concurrently. The result of the development is an RTL model of the chip which can be utilized in implementation of products without comprising proprietary circuit, layout and fabrication process information of the entity that is implementing the products.
    • 一种用于开发集成电路芯片设计的方法包括以下步骤:开发定义芯片功能的架构规范,基于架构规范开发微架构规范,基于微架构规范开发芯片的功能和结构模型,设计 基于架构规范与芯片一起使用的软件工具,以及基于微架构规范设计芯片验证工具。 与芯片开发相关的活动分为可以同时执行的阶段。 开发的结果是芯片的RTL模型,可以用于实现产品,而不包括正在实施产品的实体的专有电路,布局和制造过程信息。
    • 52. 发明授权
    • Recoded iterative multiplier
    • 重编码迭代乘数
    • US5220525A
    • 1993-06-15
    • US787477
    • 1991-11-04
    • William C. AndersonAjay Naini
    • William C. AndersonAjay Naini
    • G06F7/52
    • G06F7/5338
    • A recorded iterative multiplier (20) performs an unsigned multiplication operation quickly and with a minimal amount of added circuitry. Multiplier (20) includes a Modified Booth recoder (34) and a plurality of multiplexors (24, 26, 28, 30, and 32) to provide a plurality of partial products. An additional partial product typically generated during a first iteration of the multiplication operation is provided to a multiplexor (44) and a remaining portion of partial products are provided to a summation tree (40) having a symmetrical circuit layout. [Multiplexor (44) stores the additional partial product until summation tree (40) has processed the remaining partial products to provide a first sum.] When summation tree (40) has processed the remaining partial products to provide a first sum, multiplexor (44) provides the additional partial product to a carry save adder (42). The first sum is added to the additional partial product in [a carry-save] adder (42) to provide a first portion of a product. During a second iteration of the multiplication operation, an additional partial product is not generated, and summation tree (40) provides the second portion of the multiplication product. The first and second portions are then summed in carry-save adder (42) to provide the multiplication product.
    • 记录的迭代乘法器(20)快速执行无符号乘法运算,并以最小量的附加电路执行。 乘法器(20)包括修改的展位重新编码器(34)和多个多路复用器(24,26,28,30和32),以提供多个部分乘积。 通常在乘法运算的第一迭代期间产生的附加部分乘积被提供给多路复用器(44),并且部分乘积的剩余部分被提供给具有对称电路布局的求和树(40)。 多路复用器(44)存储额外的部分乘积,直到求和树(40)已经处理剩余的部分乘积以提供第一和。]当求和树(40)已经处理剩余的部分乘积以提供第一和时,多路复用器 )向进位保存加法器(42)提供额外的部分乘积。 将第一和加到[进位保存]加法器(42)中的附加部分乘积以提供乘积的第一部分。 在乘法运算的第二次迭代期间,不产生附加的部分乘积,并且求和树(40)提供乘积的第二部分。 然后,第一和第二部分在进位保存加法器(42)中相加以提供乘积。
    • 55. 发明授权
    • Hydraulic drive for fishing reel having variable takeup ratio
    • 具有可变牵引比的钓鱼卷轴的液压驱动
    • US4026493A
    • 1977-05-31
    • US705786
    • 1976-07-16
    • William C. Anderson
    • William C. Anderson
    • A01K89/01A01K89/02
    • A01K89/01
    • A hydraulic drive is provided for a fishing reel including a drive hydraulic pump having a drive pump member driven by a manually rotatable handle and a driven hydraulic pump having a driven pump member connected to a winding means for causing the fishing line to be wound upon a spool carried by the frame of the fishing reel. A conduit connects the drive pump and the driven pump whereby rotation of the handle forces fluid from the drive pump to the driven pump for actuating the driven pump member and driving the winding means. A flow control valve is connected in the conduit for controlling the flow rate of fluid delivered to the driven pump so that the speed of rotation of the winding means can be varied for a constant input drive speed of the drive pump.
    • 为具有驱动液压泵的驱动液压泵提供液压驱动装置,所述驱动液压泵具有由可手动旋转的手柄驱动的驱动泵构件和从动液压泵,所述从动泵构件连接到卷绕装置,用于使钓线卷绕在 卷轴由钓鱼卷轴的框架承载。 导管连接驱动泵和从动泵,由此手柄的旋转将流体从驱动泵驱动到从动泵,以驱动从动泵构件并驱动绕组装置。 流量控制阀连接在管道中,用于控制输送到从动泵的流体的流量,使得绕组装置的旋转速度可以在驱动泵的恒定输入驱动速度下变化。