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    • 4. 发明申请
    • Portable Device and Method for Controlling Deep Power Down Mode of Shared Memory
    • 用于控制共享内存的深度掉电模式的便携式设备和方法
    • US20080276053A1
    • 2008-11-06
    • US12094060
    • 2007-02-03
    • Jun Keun Lee
    • Jun Keun Lee
    • G06F12/00
    • G06F1/3203G06F1/3275Y02D10/13Y02D10/14
    • The memory device may include a first determination unit for determining whether entry into a DPD mode is to be made by interpreting signals received from a first processor, and generating and outputting a corresponding first DPD entry signal; a second determination unit for determining whether entry into the DPD mode is to be made by interpreting signals received from a second processor, and generating and outputting a corresponding second DPD entry signal; and a DPD determination unit for performing control for operation in the DPD mode only when the first DPD entry signal and the second DPD entry signal are respectively received from the first determination unit and the second determination unit. In accordance with the present invention, a single piece of memory operates in the DPD mode even when a plurality of processors shares the memory, so that power consumption can be minimized.
    • 存储装置可以包括:第一确定单元,用于确定是否通过解释从第一处理器接收到的信号来进入DPD模式,并且生成并输出对应的第一DPD条目信号; 第二确定单元,用于确定是否通过解释从第二处理器接收的信号来进入DPD模式,并且生成并输出相应的第二DPD条目信号; DPD确定单元,用于仅当从第一确定单元和第二确定单元分别接收到第一DPD输入信号和第二DPD输入信号时,执行DPD模式下的操作控制。 根据本发明,即使当多个处理器共享存储器时,单片存储器也以DPD模式工作,从而能够最小化功耗。
    • 5. 发明授权
    • Data register circuit in memory device
    • 存储器件中的数据寄存器电路
    • US06307400B1
    • 2001-10-23
    • US09606774
    • 2000-06-28
    • Saeng Hwan KimJun Keun Lee
    • Saeng Hwan KimJun Keun Lee
    • H03K190185
    • G11C7/1087G11C7/1078
    • A data register circuit, comprising: input means which includes a first input portion and a second input portion, the first input portion being reset by a data reset signal and buffering a data signal from a data line in accordance with a data fetch signal and the second input portion being reset by a data reset signal and buffering a data bar signal from a data bar line in accordance with the data fetch signal; storing means which includes a first flip flop and a second flip flop, the first and second flip flops for respectively receiving output signals of the first and second input portions of the input means and providing inverting signals of the output signals of the first and second input portions until the output signals of the first and second input portions are changed by the data reset signal, a first latch which is connected between the first input portion and the first flip flop and temporarily stores the output signal of the first input portion and a second latch which is connected between the second input portion and the second flip flop and temporarily stores the output signal of the second input portion; and data output means which includes a first output portion for receiving and buffering an output signal of the first flip flop and for providing an output signal through a pull-down terminal by a data output control signal and a second output portion for receiving and buffering an output signal of the second flip flop and for providing it an output signal through a pull-up terminal by the data output control signal.
    • 一种数据寄存器电路,包括:输入装置,其包括第一输入部分和第二输入部分,所述第一输入部分由数据复位信号复位,并根据数据获取信号从数据线缓冲数据信号;以及 第二输入部分由数据复位信号复位,并根据数据获取信号从数据条线缓冲数据条信号; 存储装置,其包括第一触发器和第二触发器,所述第一和第二触发器分别接收输入装置的第一和第二输入部分的输出信号,并提供第一和第二输入的输出信号的反相信号 部分,直到第一和第二输入部分的输出信号被数据复位信号改变,第一锁存器连接在第一输入部分和第一触发器之间,并临时存储第一输入部分的输出信号,第二锁存器 锁存器,其连接在第二输入部分和第二触发器之间,并临时存储第二输入部分的输出信号; 以及数据输出装置,其包括第一输出部分,用于接收和缓冲第一触发器的输出信号,并通过数据输出控制信号通过下拉端提供输出信号;以及第二输出部分,用于接收和缓冲 输出信号,并通过数据输出控制信号通过上拉端提供输出信号。