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    • 21. 发明授权
    • Method and apparatus to perform resistance and capacitance (RC) parameter customization for better timing closure results in physical synthesis and optimization
    • 执行电阻和电容(RC)参数定制以更好的时序闭合的方法和装置导致物理合成和优化
    • US06789248B1
    • 2004-09-07
    • US10178401
    • 2002-06-24
    • Lee-Chung LuCliff HouChia-Lin ChengChung-Hsing WangHsing-Chien HuangYee-Wen ChenTsui-Ping Wang
    • Lee-Chung LuCliff HouChia-Lin ChengChung-Hsing WangHsing-Chien HuangYee-Wen ChenTsui-Ping Wang
    • G06F1750
    • G06F17/5068
    • A method and system for the design of an electronic device adjusts the resistance and capacitance values employed in preliminary timing analysis during physical synthesis of the electronic device. The physical synthesis uses resistance and capacitance unit values to determine the listing of the component circuits. The resistance and capacitance unit values are calibrated by preliminarily placing the initially synthesized component circuits to create a listing describing physical locations of the component circuits within the electronic device. A preliminary routing of the interconnections is performed to create a listing describing a network of physical wire segments that form each interconnection of the component circuits. A timing analysis of the electronic device determines the delay created by the component circuit and the networks of physical wire segments. The time delay resulting from the physical interconnects is extracted from the timing analysis of the electronic device and from the timing estimate performed during the physical synthesis. The time delay of the physical interconnection from the timing analysis and the timing estimate performed during the physical synthesis is then compared. The resistance and capacitance unit values used during the timing synthesis are then adjusted. The calibration is repeatedly executed until time delay of the physical interconnection from the timing analysis and the timing estimate performed during the physical synthesis are correlated.
    • 用于设计电子设备的方法和系统调节在电子设备的物理合成期间的初步时序分析中使用的电阻和电容值。 物理合成使用电阻和电容单位值来确定元件电路的列表。 电阻和电容单位值通过预先放置最初合成的组件电路来校准,以创建描述电子设备内的组件电路的物理位置的列表。 执行互连的初步路由以创建描述形成组件电路的每个互连的物理线段的网络的列表。 电子设备的定时分析确定由组件电路和物理线段网络产生的延迟。 从物理互连产生的时间延迟从电子设备的定时分析以及在物理合成期间执行的定时估计提取。 然后对来自定时分析的物理互连的时间延迟和在物理合成期间执行的定时估计进行比较。 然后调整在定时合成期间使用的电阻和电容单位值。 重复执行校准,直到来自定时分析的物理互连的时间延迟和在物理合成期间执行的定时估计相关。
    • 25. 发明申请
    • SYSTEM AND METHOD FOR ON-CHIP-VARIATION ANALYSIS
    • 用于片上变化分析的系统和方法
    • US20110035715A1
    • 2011-02-10
    • US12538507
    • 2009-08-10
    • Lee-Chung LuChung-Hsing WangYuan-Te Hou
    • Lee-Chung LuChung-Hsing WangYuan-Te Hou
    • G06F17/50
    • G06F17/5031G06F2217/84
    • Apparatus is provided for performing timing analysis on a circuit. A first storage device portion stores a state dependent stage weight for each of a rising time arc and a falling time arc of each of a plurality of cells in a cell library. An adder is provided for calculating a sum of the state dependent stage weights for each of the cells that are included in a circuit path. A second storage device portion stores a table containing on chip variation (OCV) derating factors. The table is indexed by values of the sum. A total path delay is calculated for the circuit path, based on the OCV derating factor corresponding to the sum of the state dependent stage weights for the cells in the circuit path.
    • 提供了一种用于在电路上执行定时分析的装置。 第一存储设备部分存储单元库中的多个单元中的每一个的上升时间弧和下降时间弧中的每一个的状态依赖级加权。 提供一个加法器,用于计算包括在电路路径中的每个单元格的状态依赖级加权之和。 第二存储设备部分存储包含片上变化(OCV)降额因子的表。 该表由值的值索引。 基于对应于电路路径中的单元的状态依赖级加权之和的OCV降额因子,计算电路路径的总路径延迟。
    • 26. 发明申请
    • System and Method for Reducing Processor Power Consumption
    • 降低处理器功耗的系统和方法
    • US20100174933A1
    • 2010-07-08
    • US12619428
    • 2009-11-16
    • Lee-Chung LuChung-Hsing WangMyron ShakWei-Pin ChangchienKuo-Yin ChenChi Wei HuKevin HungWu-An Kuo
    • Lee-Chung LuChung-Hsing WangMyron ShakWei-Pin ChangchienKuo-Yin ChenChi Wei HuKevin HungWu-An Kuo
    • G06F1/00
    • G06F1/3287G06F1/3203G06F1/3237Y02D10/128Y02D10/171Y02D50/20
    • A system and method for reducing active power in processors is disclosed. A method embodiment comprises the steps of determining when a particular logic block is inactive, determining the powered state of the particular logic block, isolating the particular logic block from a main processor core, and powering off the particular logic block. When the system needs the particular logic block, the method further comprises reactivating the block. A system embodiment comprises software and a processor coupled to a clock control module, an isolation control module and a header/footer module, operable to isolate a particular logic block and power off a particular logic block, thereby reducing power. Another embodiment comprises a logic module coupled to a clock by a clock gating module, an isolation module for isolating the logic module, a header/footer module for disabling power to the logic module, and a power and clock gating control module for controlling the clock gating module and the header/footer module.
    • 公开了一种用于减少处理器中的有功功率的系统和方法。 方法实施例包括以下步骤:确定特定逻辑块何时不活动,确定特定逻辑块的供电状态,将特定逻辑块与主处理器内核隔离,以及断开特定逻辑块。 当系统需要特定逻辑块时,该方法还包括重新激活该块。 系统实施例包括耦合到时钟控制模块,隔离控制模块和报头/页脚模块的软件和处理器,其可操作以隔离特定逻辑块并关闭特定逻辑块,从而降低功率。 另一个实施例包括通过时钟门控模块耦合到时钟的逻辑模块,用于隔离逻辑模块的隔离模块,用于禁止对逻辑模块供电的报头/页脚模块,以及用于控制时钟的电源和时钟门控控制模块 门控模块和页眉/页脚模块。
    • 27. 发明申请
    • System and method for testing state retention circuits
    • 用于测试状态保持电路的系统和方法
    • US20080115024A1
    • 2008-05-15
    • US11595143
    • 2006-11-10
    • Chung-Hsing WangLee-Chung Lu
    • Chung-Hsing WangLee-Chung Lu
    • G06F11/25G06F11/27
    • G01R31/318544G01R31/318536
    • This invention discloses a system and method for testing a plurality of state retention circuits in an integrated circuit (IC) chip, that comprises a built-in test circuit configured to invoke a clock, a save and a restore signal, and a plurality of serially connected data latches receiving the clock, save and restore signals, wherein each data latch employs one of the plurality of state retention circuits, wherein the plurality of data latches save their existing data in their corresponding state retention circuits upon an assertion of the save signal, restore the data from the plurality of state retention circuits back to their corresponding data latches upon an assertion of the restore signal, and shifting the existing data along the series of the data latches one latch a cycle of the clock signal.
    • 本发明公开了一种用于测试集成电路(IC)芯片中的多个状态保持电路的系统和方法,该系统和方法包括被配置为调用时钟,保存和还原信号以及多个串行的内置测试电路 接收时钟的连接数据锁存器,保存和恢复信号,其中每个数据锁存器采用多个状态保持电路中的一个,其中多个数据锁存器在保存信号被断言时将其现有数据保存在其相应的状态保持电路中, 在断言恢复信号时,将数据从多个状态保持电路恢复回相应的数据锁存器,并且沿数据锁存器序列移位现有数据一个锁存器是时钟信号的周期。
    • 28. 发明申请
    • Antenna effect prevention by model extraction in a circuit design for advanced processes
    • 通过模型提取在电路设计中进行高级处理的天线效应预防
    • US20060225007A1
    • 2006-10-05
    • US11100105
    • 2005-04-05
    • Chung-Hsing WangShou-Yi LeeLee-Chung Lu
    • Chung-Hsing WangShou-Yi LeeLee-Chung Lu
    • G06F17/50
    • G06F17/5036
    • A method is disclosed for determining an antenna ratio for an interconnect in a circuit. The interconnect may be routed through one or more connection layers and may be electrically coupled to one or more gate oxide areas. A cumulative antenna ratio for all components on each connection layer is determined by considering an antenna effect caused by each component on a predetermined connection layer with regard to the gate oxide areas coupled thereto and any components on one or more connection layers coupled between the component of the present connection layer and the gate oxide areas. In the same fashion, a top layer cumulative antenna ratio for the interconnect is determined based on the cumulative antenna ratios for the connection layers below the top layer.
    • 公开了一种用于确定电路中互连的天线比率的方法。 互连可以被路由穿过一个或多个连接层并且可以电耦合到一个或多个栅极氧化物区域。 通过考虑由耦合到其上的栅极氧化物区域的预定连接层上的每个分量引起的天线效应,以及耦合在一个或多个连接层上的组件之间的任何组件来确定每个连接层上的所有组件的累积天线比 本连接层和栅极氧化物区域。 以相同的方式,基于顶层下面的连接层的累积天线比来确定互连的顶层累积天线比。