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    • 5. 发明授权
    • Semiconductor memory device
    • 半导体存储器件
    • US07848176B2
    • 2010-12-07
    • US12428828
    • 2009-04-23
    • Hitoshi IkedaShinya FujiokaTakahiro Sawamura
    • Hitoshi IkedaShinya FujiokaTakahiro Sawamura
    • G11C8/00
    • G11C8/08G11C7/1018G11C7/1042G11C11/4076G11C11/408G11C11/4085
    • A word control circuit activates word lines corresponding to a start row address and a next row address overlappingly in the continuous mode. Accordingly, even in the case where the start address indicates an end memory cell connected to a word line, the switching operation of the word line becomes unnecessary. Memory cells connected to different word lines can be thus accessed in a sequential manner. That is, a controller accessing a semiconductor memory device can access the memory without data interruption. This can prevent the data transfer rate from lowering. Furthermore, it is made unnecessary to form a signal and a control circuit for informing a controller of the fact that a word line is being switched so that the construction of a semiconductor memory device and a control circuit of the controller can be simplified. This results in reduction of the system cost.
    • 字控制电路在连续模式下重叠地起动对应于起始行地址和下一行地址的字线。 因此,即使在开始地址指示连接到字线的结束存储单元的情况下,也不需要字线的切换操作。 可以按顺序的方式访问连接到不同字线的存储单元。 也就是说,访问半导体存储器件的控制器可以访问存储器而没有数据中断。 这可以防止数据传输速率降低。 此外,不需要形成信号和控制电路,用于通知控制器正在切换字线的事实,使得可以简化控制器的半导体存储器件和控制电路的结构。 这导致系统成本的降低。
    • 6. 发明授权
    • Semiconductor memory, memory system, and memory access control method
    • 半导体存储器,存储器系统和存储器访问控制方法
    • US07778099B2
    • 2010-08-17
    • US12258970
    • 2008-10-27
    • Shinya Fujioka
    • Shinya Fujioka
    • G11C7/00
    • G11C11/406G11C11/40603G11C11/40615
    • A semiconductor memory is provided, the semiconductor memory including a memory core that includes a plurality of memory cells, a refresh generation unit that generates a refresh request for refreshing the memory cell, a core control unit that performs an access operation in response to an access request, a latency determination unit that activates a latency extension signal upon a conflict between activation of a chip enable signal and the refresh request and that deactivates the latency extension signal in response to deactivation of the chip enable signal, a latency output buffer that outputs the latency extension signal, and a data control unit that changes a latency from the access request to a transfer of data to a data terminal during the activation of the latency extension signal.
    • 提供了一种半导体存储器,所述半导体存储器包括包括多个存储单元的存储器核心,产生用于刷新存储单元的刷新请求的刷新生成单元,响应于访问执行访问操作的核心控制单元 请求,等待时间确定单元,其在激活芯片使能信号和刷新请求之间的冲突时激活延迟扩展信号,并且响应于芯片使能信号的去激活而停用延迟扩展信号;等待时间输出缓冲器,其输出 延迟扩展信号,以及数据控制单元,其在等待时间延长信号的激活期间将等待时间从访问请求改变为数据传输到数据终端。
    • 10. 发明申请
    • Semiconductor memory device and memory system
    • 半导体存储器件和存储器系统
    • US20050259492A1
    • 2005-11-24
    • US11024737
    • 2004-12-30
    • Shinya FujiokaKotoku Sato
    • Shinya FujiokaKotoku Sato
    • G11C11/4193G11C7/10G11C7/22G11C11/406G11C11/407G11C11/4195G11C11/4197G11C7/00
    • G11C11/406G11C7/1039G11C11/40603G11C11/40615
    • A command register holding a decoded result of information relating to an access request supplied from an outside and an address register are provided, and decode of the information relating to an access request from the outside in a processing circuit, namely, a chip control circuit and an address decoder, and an operation corresponding to the external access request in a memory cell array by an access control circuit are made executable independently in parallel, whereby access requests from the outside can be inputted in multiple, and a pipelined operation can be realized for decode and an operation corresponding to the external access request in the memory cell array, thus making it possible to speed up the access operation to a semiconductor memory device without causing any problem.
    • 提供保持与从外部提供的访问请求相关的信息的解码结果和地址寄存器的命令寄存器,并且在处理电路即芯片控制电路中解码与来自外部的访问请求有关的信息, 一个地址解码器和一个由访问控制电路对应于存储单元阵列中的外部访问请求的操作可以独立地并行执行,从而可以多次输入来自外部的访问请求,并且可以实现流水线操作 解码和对应于存储单元阵列中的外部访问请求的操作,从而使得可以加速对半导体存储器件的访问操作而不引起任何问题。