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    • 4. 发明公开
    • Programmable binary/interleave sequence counter
    • 程序员Zählerfürbinäreund verschachtelte Sequenzen
    • EP0743757A2
    • 1996-11-20
    • EP96107857.3
    • 1996-05-17
    • UNITED MEMORIES, INC.Nippon Steel Semiconductor Corporation
    • Jones, Oscar Frederick Jr.
    • H03K23/00
    • H03K23/004G11C8/04
    • A counter circuit (10) selectively generates counting sequences in binary and interleave counting modes. A counter (16) is formed by 3 toggle flip-flops (44, 46, 48). The toggle signals are provided by a toggle control circuit (20) which contains logic gates that are enabled or disabled based on the state of a mode select signal (SELECT). In binary mode, output bits are permitted to be used to toggle higher order count stages (46, 48). In interleave mode, the binary toggle signals are blocked, and another counter circuit (18) counts toggle signals in the interleave sequence, which signals are passed by the toggle control circuit (20) to toggle inputs of the main counter (16). The other counter circuit (18) can be reset in response to a reset signal (IRESET) applied to a load enable input.
    • 计数器电路选择性地产生二进制和交错计数模式的计数序列。 计数器由3个拨动触发器组成。 触发信号由包括基于模式选择信号的状态使能或禁用的逻辑门的触发控制电路提供。 在二进制模式下,允许输出位用于切换较高阶计数级。 在交错模式下,二进制触发信号被阻塞,另一个计数器电路对交织序列中的触发信号进行计数,该信号由触发控制电路传递以切换主计数器的输入。 响应于施加到负载使能输入的复位信号,可以复位另一个计数器电路。
    • 7. 发明授权
    • Bidirectional transition counter with threshold output
    • 具有阈值输出的双向转换计数器
    • US4509183A
    • 1985-04-02
    • US418694
    • 1982-09-16
    • Fred R. Wright
    • Fred R. Wright
    • H03K3/037H03K23/00H03K23/54H03K23/04G11C19/28H03K23/08
    • H03K3/037H03K23/004H03K23/548
    • A linear array of bistable data latches and logic gates arranged to count the binary transitions, both low to high and high to low, of a clock signal and provide a threshold style output code, characterized along the array by high logic states on one side of the threshold point and low logic states on the opposite side. Each latch in the array is permitted to set when a clock transition occurs after the preceding latch has set or to reset when a clock transition occurs after the succeeding latch has reset. Clock phasing and count enable/disable logic may be included along with direct set/reset inputs in order to accomplish parallel and/or ripple preset/clear functions or other output code modifications.
    • 双稳态数据锁存器和逻辑门的线性阵列布置成对时钟信号的从低到高和高到低的二进制转换进行计数,并提供阈值式输出代码,其特征在于阵列由高逻辑状态 相对侧的阈值点和低逻辑状态。 阵列中的每个锁存器允许在前一个锁存器置1之后发生时钟转换或在后续锁存器复位后发生时钟转换时复位。 可以包括时钟相位和计数使能/禁止逻辑以及直接设置/复位输入,以便实现并行和/或纹波预设/清除功能或其他输出代码修改。
    • 8. 发明授权
    • Counter
    • 计数器
    • US4037085A
    • 1977-07-19
    • US715152
    • 1976-08-17
    • Kazuo Minorikawa
    • Kazuo Minorikawa
    • G06F9/32G05B19/02H03K21/00H03K23/00H03K23/66H03K21/36
    • H03K23/665H03K23/004H03K23/66
    • A counter particularly useful for a program counter comprising a plurality of logic units representative of digits of information data being stored in the counter, each logic unit including a flip-flop circuit indicative of the value of each digit, an exclusive OR circuit connected with the input of the flip-flop circuit and an OR circuit connected with an input of the exclusive OR circuit, the output of the flip-flop circuit being connected to another input of the exclusive OR circuit. A control signal and a carry signal are supplied to the inputs of the OR circuit of an associated one logic unit. The least significant digit logic unit lacks an OR circuit since no carry signal is supplied thereto so that a least significant digit control signal is directly supplied to one input of the exclusive OR circuit of the least significant digit logic unit.
    • 一种对于包括表示存储在计数器中的信息数据的数字的多个逻辑单元的程序计数器特别有用的计数器,每个逻辑单元包括指示每个数字的值的触发器电路,与 触发器电路的输入和与异或电路的输入连接的OR电路,触发器电路的输出连接到异或电路的另一个输入。 控制信号和进位信号被提供给相关联的一个逻辑单元的OR电路的输入端。 最低有效位逻辑单元缺少OR电路,因为没有提供进位信号,使得最低有效数字控制信号被直接提供给最低有效位逻辑单元的异或电路的一个输入。
    • 10. 发明申请
    • FPGA 기반된 진정한 난수 생성기의 성능 향상을 위한 장치 및 방법
    • 用于增强基于FPGA的真实随机数发生器性能的装置和方法
    • WO2014007583A1
    • 2014-01-09
    • PCT/KR2013/006008
    • 2013-07-05
    • 부산대학교 산학협력단
    • 김호원이동건
    • G06F7/58H03K19/173
    • G06F7/588H03K19/1737H03K23/004
    • 본 발명은 FPGA(Field-Programmable Gate Array)를 이용하여 랜덤한 비트 시퀀스를 생성할 때, 랜덤 특성을 향상시키고, 처리량(throughput)을 늘리기 위한 FPGA 기반된 진정한 난수 생성 장치의 성능 향상을 위한 장치 및 방법을 제공하기 위한 것으로서, PDB와 PI제어를 통한 TRNG의 구현에 있어서, 종래의 구현에서 Metastable하지 못한 경우에 발생하는 출력을 제거하기 위해 필터링 기법을 사용하는 것에 반해 Metastable 하지 못한 값이 출력되는 상태를 최소화 하는 기법을 적용하였으며, 이를 위해 이전의 출력 기록을 저장하여 이를 바탕으로 Metastable한 출력 상태에 많은 Time Slot을 배분하도록 하였고, 효율적으로 출력 기록을 저장하기 위해 캐쉬와 유사한 형태의 메모리 형태를 사용하였다.
    • 本发明的目的是提供一种通过使用现场可编程门阵列(FPGA)来产生随机比特序列来提高随机性的装置和方法,并提高基于FPGA的真随机数发生器(TRNG)的性能 ),以增加吞吐量。 在通过控制PDB和PI来生成TRNG的现有方法中,使用滤波技术来去除在不亚稳态时产生的输出,而本发明应用了一种使得输出非亚稳态值的状态最小化的技术 。 为此,本发明基于保存的先前输出记录,在亚稳输出状态下分配大量时隙,并且使用与现金类似的存储器形式来有效地保存输出记录。