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    • 88. 发明授权
    • Method and system for delay control in synchronization circuits
    • 同步电路延时控制方法与系统
    • US06836166B2
    • 2004-12-28
    • US10339752
    • 2003-01-08
    • Feng LinBrent KeethBrian Johnson
    • Feng LinBrent KeethBrian Johnson
    • H03L706
    • G11C7/222G11C7/1072H03L7/0814H03L7/0818H03L7/087
    • A synchronization circuit includes a first and second phase-shifting path circuit, with each generates a phase-shifted signal responsive to an input signal and the phase-shifted signal having respective fine and coarse phase shifts relative to the input signal. Each phase-shifting path circuit adjusts the coarse and fine phase shifts responsive to control signals. A selection circuit outputs one of the phase-shifted signals responsive to a selection signal. A control circuit monitors a phase shift between the input signal and the output phase-shifted signal and develops the selection and control signals to select one of the phase-shifting path circuits and to adjust the fine phase shift of the selected path circuit and the fine and coarse phase shifts of the other path circuit. When the fine delay of the selected phase-shifting path circuit has a threshold value, the control circuit develops the selection signal to select the other phase-shifting circuit.
    • 同步电路包括第一和第二移相路径电路,每个产生响应于输入信号的相移信号,并且相移信号相对于输入信号具有相应的精细和粗略的相移。 每个移相路径电路响应于控制信号调整粗略和精细的相移。 选择电路响应于选择信号输出一个相移信号。 控制电路监视输入信号和输出相移信号之间的相移,并产生选择和控制信号以选择一个相移路径电路并调整所选路径电路的精细相移和精细 和另一路径电路的粗相移。 当所选择的移相路径电路的精细延迟具有阈值时,控制电路产生选择信号以选择另一个移相电路。
    • 90. 发明授权
    • Method and apparatus for clock synchronization between a system clock and a burst data clock
    • 用于在系统时钟和突发数据时钟之间进行时钟同步的方法和装置
    • US06751717B2
    • 2004-06-15
    • US09767490
    • 2001-01-23
    • Brian Johnson
    • Brian Johnson
    • G06F1200
    • G06F13/28
    • The present invention coordinates the execution of commands, received in response to a continuous system clock, with the receipt of data in response to a burst clock. Command capture logic receives command information in response to the system clock. A storage element is responsive to the command capture logic for storing certain command information such as write commands. A two stage pipeline receives the command information from the storage element in response to the burst clock and outputs the command information in response to the system clock. Methods of operating the apparatus are also disclosed.
    • 本发明协调响应于连续系统时钟接收的响应于突发时钟的数据的接收的命令的执行。 命令捕获逻辑响应系统时钟接收命令信息。 存储元件响应于用于存储诸如写命令之类的某些命令信息的命令捕获逻辑。 双级流水线响应于突发时钟从存储元件接收命令信息,并根据系统时钟输出命令信息。 还公开了操作该装置的方法。