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    • 2. 发明授权
    • High performance, low power, dynamically latched up/down counter
    • 高性能,低功耗,动态锁存上/下计数器
    • US07587020B2
    • 2009-09-08
    • US11739756
    • 2007-04-25
    • Jethro C. LawTrong V. LuongHung C. NgoPeter J. Klim
    • Jethro C. LawTrong V. LuongHung C. NgoPeter J. Klim
    • H03K25/00H03K23/50
    • H03K23/40H03K21/026
    • A high performance, low power up/down counter is set forth. The counter presented is controlled by two clock pulses, an up pulse and a down pulse, and updates all bits of the counter in parallel. These bits are then latched using a scannable pulsed limited output switching dynamic logic latch. By using a limited switch dynamic logic latch, the counter is able to utilize the speed of dynamic logic without requiring the traditional dynamic logic power. The area saved and speed gained by using a dynamic latch is significant compared to a typical edge-triggered flip-flop. Additionally, by computing all the next count state bits in parallel, the counter reduces an overall count computation delay by eliminating the counter ripple.
    • 提出了一个高性能,低功耗的上/下计数器。 提供的计数器由两个时钟脉冲,上升脉冲和下降脉冲控制,并并行更新计数器的所有位。 然后使用可扫描的脉冲限制输出开关动态逻辑锁存器锁存这些位。 通过使用有限开关动态逻辑锁存器,计数器能够利用动态逻辑的速度,而不需要传统的动态逻辑电源。 与典型的边沿触发触发器相比,通过使用动态锁存器保存的区域和速度是显着的。 此外,通过并行计算所有下一个计数状态位,计数器通过消除计数器纹波来减少总计数计算延迟。
    • 5. 发明申请
    • METHOD AND APPARATUS FOR A CONFIGURABLE LOW POWER HIGH FAN-IN MULTIPLEXER
    • 一种可配置低功率高风扇多路复用器的方法和装置
    • US20080303553A1
    • 2008-12-11
    • US11759426
    • 2007-06-07
    • OWEN CHIANGChristopher M. DurhamPeter J. KlimJames D. Warnock
    • OWEN CHIANGChristopher M. DurhamPeter J. KlimJames D. Warnock
    • H03K19/20
    • H03K19/0008H03K17/005
    • A configurable, low power high fan-in multiplexer (MUX) is disclosed. The MUX circuit includes multiple current control elements, which each include multiple inverters coupled to a transmission gate. Each current control element receives a data signal and a select signal that corresponds to the data signal. If a select signal exceeds a threshold value (e.g., a logical “1”), the select signal deactivates a pull-up transistor (e.g., a p-type field effect transistor), and the transmission gate enables the corresponding data signal to provide input to a logic gate (e.g., a NAND gate) coupled to the output of the MUX. If the select signal does not exceed the threshold value, the select signal activates the pull-up transistor, and the transmission gate prevents the corresponding data signal from providing input to the logic gate.
    • 公开了一种可配置的低功率高风扇多路复用器(MUX)。 MUX电路包括多个电流控制元件,每个电流控制元件包括耦合到传输门的多个反相器。 每个电流控制元件接收对应于数据信号的数据信号和选择信号。 如果选择信号超过阈值(例如,逻辑“1”),则选择信号去激活上拉晶体管(例如,p型场效应晶体管),并且传输门使得相应的数据信号能够提供 输入到与MUX的输出耦合的逻辑门(例如,NAND门)。 如果选择信号不超过阈值,则选择信号激活上拉晶体管,并且传输门禁止相应的数据信号向逻辑门提供输入。
    • 7. 发明申请
    • VIRTUAL POWER RAILS FOR INTEGRATED CIRCUITS
    • 用于集成电路的虚拟功率轨
    • US20080123458A1
    • 2008-05-29
    • US11458616
    • 2006-07-19
    • Zhibin ChengSatyajit DuttaPeter J. Klim
    • Zhibin ChengSatyajit DuttaPeter J. Klim
    • G11C5/14G05F3/02
    • G11C5/063G11C11/413
    • Methods and apparatuses to decrease power consumption and reduce leakage current of integrated circuits are disclosed. New leakage power saving techniques for various types of integrated circuits, including cache memory circuits, are discussed. Embodiments comprise methods and apparatuses to reduce power consumption in integrated circuits by using virtual voltage rails, or virtual power rails, to supply power to integrated circuit loads. The methods and apparatuses generally involve using one or two virtual power control devices to “head” and “foot”, or sandwich, the integrated circuit loads from firm power supply rails. In these method embodiments, one or more elements sense the voltage of the virtual power rails, or nodes, and make adjustments to control the voltage at certain “virtual” voltage potentials. While controlling the voltage in this manner, the virtual power control devices may serve to restrict unnecessary current flow through the integrated circuit loads.
    • 公开了降低功耗并降低集成电路泄漏电流的方法和装置。 讨论了用于各种类型的集成电路(包括高速缓存存储器电路)的新的漏电省电技术。 实施例包括通过使用虚拟电压轨或虚拟电源轨来降低集成电路的功率消耗的方法和装置,以向集成电路负载供电。 所述方法和装置通常涉及使用一个或两个虚拟功率控制装置从牢固的电源轨道“集成”和“脚”或夹入集成电路负载。 在这些方法实施例中,一个或多个元件感测虚拟电源轨或节点的电压,并进行调整以控制某些“虚拟”电压电位下的电压。 在以这种方式控制电压的同时,虚拟功率控制装置可用于限制通过集成电路负载的不必要的电流。
    • 9. 发明授权
    • Programable interrupt controller
    • 可编程中断控制器
    • US5261107A
    • 1993-11-09
    • US825336
    • 1992-01-23
    • Peter J. KlimAvery M. LyfordDennis L. Moeller
    • Peter J. KlimAvery M. LyfordDennis L. Moeller
    • G06F13/24G06F13/26G06F9/46
    • G06F13/26G06F13/24
    • A programmable interrupt controller having a plurality of interrupt request inquest inputs and an interrupt request output for connection to a central processing unit (CPU) includes means for interrupting the CPU over the interrupt request output responsive to an interrupt request from any one of the interrupt request inputs and a priority resolver for assigning a priority position to each of the interrupt request inputs to create an interrupt priority hierarchy. The interrupt controller is programmable such that each interrupt request input may be independently established as responsive to either edge-triggered or level-triggered interrupt requests on a per interrupt basis. An initialization command word register of the interrupt controller has a bit corresponding to each of the interrupt request inputs. Programming each of the bits of the register to one of two states determines whether corresponding interrupt request inputs are edge-sensitive or level-sensitive.
    • 具有多个中断请求查询输入的可编程中断控制器和用于连接到中央处理单元(CPU)的中断请求输出包括响应于来自任一中断请求的中断请求而中断CPU的中断请求输出的装置 输入和优先级分解器,用于将优先级位置分配给每个中断请求输入以创建中断优先级层次。 中断控制器是可编程的,使得每个中断请求输入可以独立地建立为响应于每个中断的边沿触发或电平触发中断请求。 中断控制器的初始化命令字寄存器具有与每个中断请求输入相对应的位。 将寄存器的每个位编程为两种状态之一决定了相应的中断请求输入是边沿敏感还是对电平敏感。