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    • 7. 发明授权
    • Model build in the presence of a non-binding reference
    • 存在非绑定引用的模型构建
    • US08453080B2
    • 2013-05-28
    • US12335766
    • 2008-12-16
    • Wolfgang RoesnerRobert J. ShadowenDerek E. Williams
    • Wolfgang RoesnerRobert J. ShadowenDerek E. Williams
    • G06F17/50G06F9/455G06F7/62
    • G06F17/5045
    • One or more hardware description language (HDL) files describe a plurality of hierarchically arranged design entities defining a digital design to be simulated and a plurality of configuration entities not belonging to the digital design that logically control settings of a plurality of configuration latches in the digital design. The HDL file(s) are compiled to obtain a simulation executable model of the digital design and an associated configuration database. The compiling includes parsing a configuration statement that specifies an association between an instance of a configuration entity and a specified configuration latch, determining whether or not the specified configuration latch is described in the HDL file(s), and if not, creating an indication in the configuration database that the instance of the configuration latch had a specified association to a configuration latch to which it failed to bind.
    • 一个或多个硬件描述语言(HDL)文件描述了定义要仿真的数字设计的多个分层布置的设计实体以及不属于数字设计的多个配置实体,所述多个配置实体逻辑地控制数字的多个配置锁存器的设置 设计。 编译HDL文件以获得数字设计的模拟可执行模型和相关联的配置数据库。 编译包括解析配置语句,该配置语句指定配置实体的实例与指定的配置锁存器之间的关联,确定在HDL文件中是否描述了指定的配置锁存器,以及如果不是,则创建指示 配置数据库,配置锁存器的实例与其无法绑定到的配置锁存器具有指定的关联。
    • 10. 发明授权
    • Strategy to verify asynchronous links across chips
    • 跨芯片验证异步链接的策略
    • US07464287B2
    • 2008-12-09
    • US10815903
    • 2004-03-31
    • Debendra Das SharmaGurushankar RajamaniHanh Hoang
    • Debendra Das SharmaGurushankar RajamaniHanh Hoang
    • G06F5/06G06F17/50G06F7/62
    • H04L49/9078H04L49/90
    • Various embodiments of the invention provide a frequency shifter to vary the frequency of data transmitted over time, such as to increase and decrease the frequency of test data transmitted over time to verify a digital communication device's ability to receive data having various frequencies within a specific parameter range. The frequency shifter includes a frequency modifier to shift or vary an input clock frequency to a variety of output clock frequencies, such as according to a test protocol. The frequency shifter also includes an elastic data buffer to receive the test data at the input clock frequency and to output the test data at the plurality of output clock frequencies provided by the frequency modifier.
    • 本发明的各种实施例提供一种频率移位器来改变随时间传输的数据的频率,诸如增加和减少随时间传输的测试数据的频率,以验证数字通信设备接收具有特定参数内的各种频率的数据的能力 范围。 频移器包括频率修正器,用于将输入时钟频率移位或改变为各种输出时钟频率,例如根据测试协议。 移相器还包括一个弹性数据缓冲器,用于以输入时钟频率接收测试数据,并输出由频率调节器提供的多个输出时钟频率的测试数据。