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    • 9. 发明授权
    • Latency control circuit and method using queuing design method
    • 延迟控制电路和使用排队设计方法的方法
    • US08230140B2
    • 2012-07-24
    • US13178846
    • 2011-07-08
    • Byung-Hoon JeongHoe-Ju Chung
    • Byung-Hoon JeongHoe-Ju Chung
    • G06F3/00
    • G11C7/22G11C7/1066G11C7/1078G11C7/109G11C8/18G11C11/4076G11C11/4093G11C2207/2272
    • A latency control circuit includes a FIFO controller and a register unit. The FIFO controller may generate an increase signal according to an external command, and generate a decrease signal according to an internal command. The FIFO controller may also enable a depth point signal responsive to the increase signal and the decrease signal. The register unit may include n registers. The value n (rounded off) may be obtained by dividing a larger value of a maximum number of additive latencies and a maximum number of write latencies by a column cycle delay time (tCCD). The registers may store an address received with the external command responsive to the increase signal and a clock signal, and may shift either the address or a previous address to a neighboring register. The latency control circuit transmits an address stored in a register as a column address corresponding to the enabled depth point signal.
    • 等待时间控制电路包括FIFO控制器和寄存器单元。 FIFO控制器可以根据外部命令生成增加信号,并根据内部命令生成减少信号。 FIFO控制器还可以响应于增加信号和减小信号启用深度点信号。 寄存器单元可以包括n个寄存器。 值n(四舍五入)可以通过将最大数量的加性延迟和最大写入延迟数的较大值除以列周期延迟时间(tCCD)来获得。 寄存器可以响应于增加信号和时钟信号而存储与外部命令接收的地址,并且可以将地址或先前地址移位到相邻寄存器。 延迟控制电路将存储在寄存器中的地址作为与启用的深度点信号相对应的列地址。