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    • 13. 发明授权
    • Generation of route rules
    • 生成路线规则
    • US06732346B2
    • 2004-05-04
    • US10155042
    • 2002-05-24
    • Stephen C. HorneGopal VijayanDonald W. Glowka
    • Stephen C. HorneGopal VijayanDonald W. Glowka
    • G06F1750
    • G06F17/5077
    • This invention discloses a software tool 20 that generates wire route rules between logic gates in a semiconductor device for the automated layout of the logic gates in the device. The software tool 20 includes a routing rule generation tool 22 that creates a route rule database 30 for a given semiconductor fabrication technology and circuit family of logic gates, and includes a block build tool 32 that interconnects the logic gates with routes according to the route rules generated by the routing rule generation tool 22. The routing rule generation tool 22 further includes a noise sensitivity/gate characterization tool 24 and a rule generator tool 28. The block build tool 32 further includes a gate sizing tool 34, a gate analysis tool 36, a route rule selecting tool 38, a route assigning tool 42.
    • 本发明公开了一种在半导体器件中的逻辑门之间产生线路规则的软件工具20,用于设备中的逻辑门的自动布局。 软件工具20包括路由规则生成工具22,其为给定的半导体制造技术和电路逻辑门系列创建路由规则数据库30,并且包括块逻辑门建立工具32,其将逻辑门与根据路由规则的路由互连 路由规则生成工具22还包括噪声敏感度/门表征工具24和规则生成器工具28.块构建工具32还包括门尺寸工具34,门分析工具36 ,路线规则选择工具38,路线分配工具42。
    • 15. 发明授权
    • Method and apparatus for a special stress mode for N-NARY logic that initializes the logic into a functionally illegal state
    • 用于N-NARY逻辑的特殊应力模式的方法和装置,将逻辑初始化为功能非法状态
    • US06412085B1
    • 2002-06-25
    • US09468760
    • 1999-12-21
    • Stephen C. HorneKenneth D. Amstutz
    • Stephen C. HorneKenneth D. Amstutz
    • G01R3128
    • G01R31/318577G01R31/318594
    • The present invention is a method and apparatus that initializes N-NARY logic and dynamic logic to a special stress mode. The present invention has a logic circuit that includes a shared logic tree with one or more evaluate nodes, one or more precharge devices, and an evaluate device. Coupled to the evaluate nodes is a state generation control circuit that generates a state signal. A state generation circuit receives the state signal from the state generation control circuit and initializes the evaluate nodes to a functionally illegal state that initializes the logic circuit to the special stress mode. One embodiment of the present invention initializes the evaluate nodes to a low state. When the first logic circuit in a series of logic circuits is initialized to the functionally illegal state, the present invention will initialize the succeeding logic circuits in the series as each phase in the different clock domains evaluate, which initializes the succeeding logic circuits to the special stress mode.
    • 本发明是将N-NARY逻辑和动态逻辑初始化为特殊应力模式的方法和装置。 本发明具有包括具有一个或多个评估节点的共享逻辑树,一个或多个预充电装置和评估装置的逻辑电路。 耦合到评估节点的是产生状态信号的状态产生控制电路。 状态产生电路从状态产生控制电路接收状态信号,并将评估节点初始化为将逻辑电路初始化为特殊压力模式的功能非法状态。 本发明的一个实施例将评估节点初始化为低状态。 当一系列逻辑电路中的第一逻辑电路被初始化为功能非法状态时,本发明将在不同时钟域中的每个阶段评估系列中的后续逻辑电路的初始化,其将后续逻辑电路初始化为特殊 压力模式。
    • 16. 发明授权
    • Distributed gated clock driver
    • 分布式门控时钟驱动
    • US5892373A
    • 1999-04-06
    • US790393
    • 1997-01-29
    • Raghuram S. TupuriStephen C. Horne
    • Raghuram S. TupuriStephen C. Horne
    • H03K3/037H03K19/096
    • H03K3/0375
    • A gated clock driver is configured to provide an enable signal and a gated clock signal at each of a plurality flip-flops. One of the p-channel transistors of the gated clock driver's NOR gate is distributed to each of the flip-flops or latches in the system. Additionally, an extra n-channel transistor is provided in the gated clock circuit to form an inverter with the nondistributed p-channel transistor. More particularly, the p-channel transistor that is driven by the system clock input is distributed to each of the flip-flops. Similarly, the enable input (at the output of the new inverter) is distributed to each of the flip-flops. Since the gated clock signal cannot be generated without the enable signal being high and the system clock being low, distributing enable and the p-channel transistor which receives the system clock as an input minimizes clock skew as compared to flip-flops with a completely shared clock gating clock.
    • 门控时钟驱动器被配置为在多个触发器中的每一个提供使能信号和门控时钟信号。 门控时钟驱动器的或非门的p沟道晶体管之一被分配到系统中的每个触发器或锁存器。 此外,在门控时钟电路中提供了额外的n沟道晶体管,以形成具有非分布式p沟道晶体管的反相器。 更具体地,由系统时钟输入驱动的p沟道晶体管被分配到每个触发器。 类似地,使能输入(在新的反相器的输出处)被分配给每个触发器。 由于门控时钟信号不能在没有使能信号为高电平且系统时钟为低的情况下产生,所以与具有完全共享的触发器相比,接收系统时钟作为输入的分配使能和p沟道晶体管使时钟偏移最小化 时钟门控时钟。
    • 17. 发明授权
    • Digital clock waveform generator and method for generating a clock signal
    • 数字时钟波形发生器和用于产生时钟信号的方法
    • US5812832A
    • 1998-09-22
    • US011068
    • 1993-01-29
    • Stephen C. HorneScott H. R. McMahon
    • Stephen C. HorneScott H. R. McMahon
    • H03K5/151G06F1/04H03K5/156G06F1/08
    • H03K5/1565G06F1/04
    • A digital clock waveform generator and method for generating a clock signal are provided for a microprocessor or other digital circuit to provide on chip generation of internal clock signals having the same frequency as or a higher or lower frequency than an externally applied clock signal. In one embodiment, the waveform generator includes a delay chain and a control unit that matches the propagation delay of the delay chain to the period of an input timing signal. The waveform generator provides precise control of the duty cycles of the internally generated clock signals, and allows for rapid starting and stopping of the internal clock signals for power reduction functions. The waveform generator may further provide a system clock, and may include circuitry to precisely control the phase relationships between the various clock signals. The waveform generator is easily manufactured with digital circuitry that automatically compensates for changing environmental conditions such as operating voltage and temperature.
    • 提供了一种用于产生时钟信号的数字时钟波形发生器和方法,用于微处理器或其它数字电路,以提供具有与外部施加的时钟信号相同频率或更高或更低频率的内部时钟信号的片上产生。 在一个实施例中,波形发生器包括延迟链和控制单元,其将延迟链的传播延迟与输入定时信号的周期相匹配。 波形发生器可精确控制内部产生的时钟信号的占空比,并允许快速启动和停止用于功耗降低功能的内部时钟信号。 波形发生器还可以提供系统时钟,并且可以包括用于精确控制各种时钟信号之间的相位关系的电路。 波形发生器易于制造,数字电路可自动补偿不断变化的环境条件,如工作电压和温度。
    • 18. 发明授权
    • Data cache and method for handling memory errors during copy-back
    • 用于在复制期间处理内存错误的数据缓存和方法
    • US5295259A
    • 1994-03-15
    • US650681
    • 1991-02-05
    • Stephen C. Horne
    • Stephen C. Horne
    • G06F11/07G06F12/08G06F1/00
    • G06F11/073G06F11/0724G06F11/0793G06F12/0804
    • Apparatus and method of a data cache which provides for the handling of errors during data copy-back from a data cache write buffer to external memory in a processing system including a processor. When data requested by the processor at an addressed storage location of the data cache is data which is valid, modified, and other than the data requested by the processor, the data is first transferred to the data cache write buffer and then written back to external memory after the requested data is fetched from a memory bus. If an error occurs during the write back of the data from the write buffer to external memory, the data is transferred from the write buffer to the storage location of the data cache originally addressed by the processor before the memory bus is released.
    • 数据高速缓冲存储器的装置和方法,其在包括处理器的处理系统中提供从数据高速缓存写入缓冲器到外部存储器的数据复制期间的错误的处理。 当处理器在数据高速缓存的寻址存储位置请求的数据是有效,修改的数据,而不是由处理器请求的数据时,数据首先被传送到数据高速缓存写入缓冲器,然后写回到外部 从存储器总线中取出所请求的数据后的存储器。 如果在将写入缓冲区写入外部存储器的数据写入期间发生错误,则在释放存储器总线之前,将数据从写入缓冲区传送到最初由处理器寻址的数据缓存的存储位置。