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    • 1. 发明授权
    • 링크드-리스트 공통 메모리 스위치 장치
    • 링크드 - 리스트공통메모리스위치장치
    • KR100384997B1
    • 2003-05-22
    • KR1019990035395
    • 1999-08-25
    • 한국전자통신연구원주식회사 케이티
    • 박형준강석열
    • H04L12/933H04L12/26H04L29/12
    • PURPOSE: A switch device of a linked-list common memory is provided to implement the control and management of a linked-list address only with pure hardware in an ATM switching using a common memory, and to consider hardware configuration to minimize the size of the memory and maximize a memory use rate. CONSTITUTION: A header detector(20) extracts a routing header tag during predetermined clocks, for outputting. A routing controller(30) outputs a write request signal. A cell data memory(40) reads cell data to output the cell data to an idle cell controller(90). A linked-list address memory(50) writes read addresses. A write/read address controller(60) requests the supply of write addresses to a free space cell data memory address FIFO(80), and outputs a read address of a next order to the linked-list address memory(50). If cell data corresponding to an output port are stored, the write/read address controller(60) outputs read addresses to the cell data memory(40) and the linked-list address memory(50). If signals for detecting an error and confirming whether to restore the error are inputted from an error detector(110), the write/read address controller(60) performs initialization of decision. The initial address manager(70) resets a counter used in generation of write addresses. The idle cell controller(90) generates and outputs idle cells The error detector(110) requests an output of idle cells to the idle cell controller(90). The read port controller(120) outputs an output port number to the write/read address controller(60), and receives the priority information from external.
    • 目的:提供一个链接表公共存储器的开关装置,用于在仅使用公共存储器的ATM交换中用纯硬件实现链接表地址的控制和管理,并考虑硬件配置以最小化 内存并最大化内存使用率。 构成:报头检测器(20)在预定时钟期间提取路由报头标签,用于输出。 路由控制器(30)输出写请求信号。 单元数据存储器(40)读取单元数据以将单元数据输出到空闲单元控制器(90)。 链表地址存储器(50)写入读地址。 写/读地址控制器(60)请求向自由空间单元数据存储器地址FIFO(80)提供写地址,并将下一个命令的读地址输出到链接表地址存储器(50)。 如果存储了与输出端口相对应的单元数据,则写/读地址控制器(60)将读地址输出到单元数据存储器(40)和链接表地址存储器(50)。 如果从错误检测器(110)输入用于检测错误和确认是否恢复错误的信号,则写入/读取地址控制器(60)执行决定的初始化。 初始地址管理器(70)重置用于产生写入地址的计数器。 空闲单元控制器(90)产生并输出空闲单元。差错检测器(110)向空闲单元控制器(90)请求空闲单元的输出。 读端口控制器(120)将输出端口号输出到写/读地址控制器(60),并从外部接收优先级信息。
    • 4. 发明授权
    • 클럭 감시 회로
    • 时钟监控电路
    • KR1019950005940B1
    • 1995-06-07
    • KR1019920026109
    • 1992-12-29
    • 한국전자통신연구원주식회사 케이티
    • 홍재환박형준권보섭이선훈권환우이충근
    • H04L7/00
    • G06F11/0757G06F1/04H04L7/0083
    • The circuit comprises a monitoring clock receiver(1), a counter reset generator(4) for generating a first reset signal in response to the received monitoring clock, a reset signal receiver(2) for receiving a second reset signal and synchronizing the received second reset signal with the monitoring clock or a reference clock, a monitoring counter circuit(5) sampling and counting the reference clock in response to the first and second reset signals to monitor the clock, a NAND logic means(7) outputting the monitored result in response to an output signal from the monitoring counter if a clock error is determined according to the monitored result, and an output hold circuit(16) holding the monitored result from the NAND logic device when the monitoring clock is abnormal.
    • 该电路包括监视时钟接收器(1),用于响应接收到的监控时钟产生第一复位信号的计数器复位发生器(4),复位信号接收器(2),用于接收第二复位信号并同步所接收的第二 具有监视时钟或参考时钟的复位信号,监视计数器电路(5)响应于第一和第二复位信号对参考时钟进行采样和计数以监视时钟; NAND逻辑装置(7)将监视结果输出 响应来自监控计数器的输出信号,如果根据监视结果确定时钟误差,以及输出保持电路(16),当监视时钟异常时,保持来自NAND逻辑器件的监视结果。