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    • 2. 发明授权
    • Integrated circuit device having a switched routing network
    • 具有交换路由网络的集成电路设备
    • US5898677A
    • 1999-04-27
    • US782585
    • 1997-01-13
    • Richard DeeleyCarlos Dangelo
    • Richard DeeleyCarlos Dangelo
    • G06F17/50H03K19/173H04J3/04H04Q11/04H01L29/00
    • H04Q11/0421G06F17/5045H03K19/1737H04J3/047
    • Signal area efficiency in integrated circuit designs is improved by increasing the information efficiency of signal wiring on an integrated circuit. Candidate signals are selected for combination by prioritizing signals according to length of travel, travel path, and information content. Signals with low information content and with greater distance between endpoints make poor utilization of fixed wiring and provide the best candidates for improvement. Candidate signals which travel similar (substantially parallel) paths from point to point across the integrated circuit are combined to improve chip area utilization efficiency. A variety of techniques are described for combining low-information-content signals onto a small number of wires, transmitting them over the small number of wires, and re-expanding them at their destination. Assuming that the combining/expanding circuitry occupies less space than the point-to-point wiring which would otherwise be required, there is a net reduction in chip area. One aspect of the invention is directed to using auto-routing switching techniques for combining signals. Another aspect is directed to applying these combining/expanding techniques to the integrated circuit design process.
    • 通过提高集成电路中信号线路的信息效率,可以提高集成电路设计中的信号区域效率。 根据行程长度,旅行路径和信息内容对信号进行优先排序,选择候选信号进行组合。 具有低信息含量和端点之间距离更大的信号使固定布线的利用率降低,并提供最佳的改进选择。 通过集成电路从点到点行进相似(基本上平行)路径的候选信号被组合以提高芯片面积利用效率。 描述了将低信息内容信号组合到少数电线上的各种技术,通过少量电线传输它们,并在其目的地重新扩展它们。 假设组合/扩展电路占用的空间比原来要求的点对点布线少,则芯片面积的净减少。 本发明的一个方面涉及使用自动路由切换技术来组合信号。 另一方面涉及将这些组合/扩展技术应用于集成电路设计过程。
    • 3. 发明授权
    • Separable cells having wiring channels for routing signals between
surrounding cells
    • 可分离的单元具有用于在周围单元之间路由信号的布线通道
    • US5638288A
    • 1997-06-10
    • US295094
    • 1994-08-24
    • Richard Deeley
    • Richard Deeley
    • G06F17/50H01L27/02H01L27/118H01L21/02
    • H01L27/0207G06F17/5072H01L27/118
    • On integrated circuit designs employing large, pre-defined circuit blocks, chip area utilization and signal routing is improved by permitting signals between circuit blocks surrounding (e.g., on opposite sides of) a large circuit block (megacell) to physically pass through the megacell. The megacell is laid out so that a "parting line" is defined through the megacell. Circuits within the megacell are laid out so that no circuit "straddles" the parting line. The megacell can then be split or stretched about the parting line to create a wiring channel. The wiring channel is used for routing signals from the surrounding cells (circuit blocks) through the large circuit block (megacell). Signals between the separated portions of the stretched or split megacell on opposite sides of the parting line may be routed in one metal layer, while connections of surrounding cells through the megacell may be routed in another metal layer. A maximum split or stretch distance is defined for which the megacell performance specifications (e.g., timing constraints) will be met. A plurality of surrounding cells may be interconnected by routing their signals in stacked wiring layers. The megacell may be split or stretched about two or more parting lines to create two or more wiring channels.
    • 在采用大的预定义电路块的集成电路设计中,通过允许在大电路块(megacell)之间的周围(例如,在相对的两侧)的电路块之间的信号物理地通过兆位来提高芯片面积利用率和信号路由。 大型电力设备布置成使得通过电力分配器定义“分流线”。 巨型电路内的电路布置成使得电路“跨越”分离线。 然后可以围绕分型线分离或拉伸巨型电位器,以产生布线通道。 布线通道用于从周围的单元(电路块)通过大电路块(megacell)路由信号。 在分开线的相对侧上的拉伸或分裂的电池的分离部分之间的信号可以路由在一个金属层中,而通过电池的周围电池的连接可以在另一个金属层中布线。 定义了最大分割或拉伸距离,对于该最大分割或拉伸距离将满足巨型飞机性能规格(例如,时间约束)。 可以通过在堆叠的布线层中布置它们的信号来互连多个周围的单元。 大型电池可以分开或拉伸约两个或更多个分型线以产生两个或更多个布线通道。
    • 5. 发明授权
    • Separable cells having wiring channels for routing signals between
surrounding cells
    • 可分离的单元具有用于在周围单元之间路由信号的布线通道
    • US5905655A
    • 1999-05-18
    • US871212
    • 1997-06-09
    • Richard Deeley
    • Richard Deeley
    • G06F17/50H01L27/02H01L27/118
    • H01L27/0207G06F17/5072H01L27/118
    • On integrated circuit designs employing large, pre-defined circuit blocks, chip area utilization and signal routing is improved by permitting signals between circuit blocks surrounding (e.g., on opposite sides of) a large circuit block (megacell) to physically pass through the megacell. The megacell is laid out so that a "parting line" is defined through the megacell. Circuits within the megacell are laid out so that no circuit "straddles" the parting line. The megacell can then be split or stretched about the parting line to create a wiring channel. The wiring channel is used for routing signals from the surrounding cells (circuit blocks) through the large circuit block (megacell). Signals between the separated portions of the stretched or split megacell on opposite sides of the parting line may be routed in one metal layer, while connections of surrounding cells through the megacell may be routed in another metal layer. A maximum split or stretch distance is defined for which the megacell performance specifications (e.g., timing constraints) will be met. A plurality of surrounding cells may be interconnected by routing their signals in stacked wiring layers. The megacell may be split or stretched about two or more parting lines to create two or more wiring channels.
    • 在采用大的预定义电路块的集成电路设计中,通过允许在大电路块(megacell)之间的周围(例如,在相对的两侧)的电路块之间的信号物理地通过兆位来提高芯片面积利用率和信号路由。 大型电力设备布置成使得通过电力分配器定义“分流线”。 巨型电路内的电路布置成使得电路“跨越”分离线。 然后可以围绕分型线分离或拉伸巨型电位器,以产生布线通道。 布线通道用于从周围的单元(电路块)通过大电路块(megacell)路由信号。 在分开线的相对侧上的拉伸或分裂的电池的分离部分之间的信号可以路由在一个金属层中,而通过电池的周围电池的连接可以在另一个金属层中布线。 定义了最大分割或拉伸距离,对于该最大分割或拉伸距离将满足巨型飞机性能规格(例如,时间约束)。 可以通过在堆叠的布线层中布置它们的信号来互连多个周围的单元。 大型电池可以分开或拉伸约两个或更多个分型线以产生两个或更多个布线通道。
    • 6. 发明授权
    • High-speed internal interconnection technique for integrated circuits
that reduces the number of signal lines through multiplexing
    • 用于通过复用减少信号线数量的集成电路的高速内部互连技术
    • US5615126A
    • 1997-03-25
    • US294973
    • 1994-08-24
    • Richard DeeleyCarlos Dangelo
    • Richard DeeleyCarlos Dangelo
    • G06F17/50H03K19/173H04J3/04H04Q11/04H02B1/20
    • H04Q11/0421G06F17/5045H03K19/1737H04J3/047
    • Signal area efficiency in integrated circuit designs is improved by increasing the information efficiency of signal wiring on an integrated circuit. Candidate signals are selected for combination by prioritizing signals according to length of travel, travel path, and information content. Signals with low information content and with greater distance between endpoints make poor utilization of fixed wiring and provide the best candidates for improvement. Candidate signals which travel similar (substantially parallel) paths from point to point across the integrated circuit are combined to improve chip area utilization efficiency. A variety of techniques are described for combining low-information-content signals onto a small number of wires, transmitting them over the small number of wires, and re-expanding them at their destination. Assuming that the combining/expanding circuitry occupies less space than the point-to-point wiring which would otherwise be required, there is a net reduction in chip area. One aspect of the invention is directed to using auto-routing switching techniques for combining signals. Another aspect is directed to applying these combining/expanding techniques to the integrated circuit design process.
    • 通过提高集成电路中信号线路的信息效率,可以提高集成电路设计中的信号区域效率。 通过根据行程长度,旅行路径和信息内容对信号进行优先排序,选择候选信号进行组合。 具有低信息含量和端点之间距离更大的信号使固定布线的利用率降低,并提供最佳的改进选择。 通过集成电路从点到点行进相似(基本上平行)路径的候选信号被组合以提高芯片面积利用效率。 描述了将低信息内容信号组合到少数电线上的各种技术,通过少量电线传输它们,并在其目的地重新扩展它们。 假设组合/扩展电路占用的空间比原来要求的点对点布线少,则芯片面积的净减少。 本发明的一个方面涉及使用自动路由切换技术来组合信号。 另一方面涉及将这些组合/扩展技术应用于集成电路设计过程。
    • 10. 发明授权
    • Method and system for creating and validating low level description of electronic design
    • 创建和验证电子设计低级描述的方法和系统
    • US06324678B1
    • 2001-11-27
    • US08701727
    • 1996-08-22
    • Carlos DangeloRichard DeeleyVijay NagasamyManoucher Vafai
    • Carlos DangeloRichard DeeleyVijay NagasamyManoucher Vafai
    • G06F1750
    • G01R31/31704G01R31/318357G01R31/318364G01R31/318378G06F11/261G06F17/5022G06F17/5045
    • A methodology for generating structural descriptions of complex digital devices from high-level descriptions and specifications is disclosed. The methodology uses a systematic technique to map and enforce consistency of the semantics imbedded in the intent of the original, high-level descriptions. The design activity is essentially a series of transformations operating upon various levels of design representations. At each level, the intended meaning (semantics) and formal software manipulations are captured to derive a more detailed level describing hardware meeting the design goals. Important features of the methodology are: capturing the users concepts, intent, specification, descriptions, constraints and trade-offs; architectural partitioning; what-if analysis at a high level; sizing estimation; timing estimation; architectural trade-off; conceptual design with implementation estimation; and timing closure. The methodology includes using estimators, based on data gathered over a number of realized designs, for partitioning and evaluating a design prior to logic synthesis. From the structural description, a physical implementation of the device is readily realized. A matrix of milestones (goals in the design activity) is defined by degree of complexity (level of abstraction) of a design and for progressive stages (levels) of design activity (from concept through implementation). The milestones are defined using continuous refinement, and the design activity proceeds towards subsequent milestones. As milestones are achieved, previous design activity becomes unalterable. A feasibility stage is key to convergence of the process. Single level or multi-level estimators determine the direction of the process.
    • 公开了一种用于从高级描述和规范生成复杂数字设备的结构描述的方法。 该方法使用系统的技术来绘制和实施嵌入原始高级描述意图的语义的一致性。 设计活动本质上是在各种级别的设计表示上运行的一系列变革。 在每个级别,捕获意图(语义)和正式的软件操作,以得到更详细的级别,描述符合设计目标的硬件。 方法的重要特征是:捕获用户的概念,意图,规范,描述,约束和权衡; 建筑分区; 高级别的假设分析; 尺寸估算; 定时估计; 建筑权衡; 概念设计与实施估计; 和时间关闭。 该方法包括使用估计器,基于在多个实现的设计上收集的数据,用于在逻辑综合之前对设计进行分区和评估。 从结构描述中,容易实现设备的物理实现。 里程碑矩阵(设计活动中的目标)由设计的复杂度(抽象度)和设计活动(从概念到实施)的渐进阶段(级别)的程度来定义。 里程碑的定义是使用不断的细化,设计活动进行到后续的里程碑。 随着里程碑的实现,以前的设计活动变得不可改变。 可行性阶段是过程融合的关键。 单级或多级估计器确定过程的方向。