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    • 42. 发明公开
    • 단일의 기준 저항기를 이용하여 종결 회로 및 오프-칩구동 회로의 임피던스를 제어하는 장치
    • 用于仅使用一个参考电阻器控制两个终止电路和片外驱动电路的阻抗的装置
    • KR1020050019453A
    • 2005-03-03
    • KR1020030057245
    • 2003-08-19
    • 삼성전자주식회사
    • 박윤식
    • G11C7/00
    • H04L25/0278H03K19/0005H04L25/028H04L25/0292
    • PURPOSE: A device for controlling impedance of both termination circuit and off-chip driver circuit is provided to control the impedance by using only one of reference resistor. CONSTITUTION: A semiconductor integrated circuit device(100) comprises an impedance control circuit(160) connected to an external reference resistor, for generating impedance control codes which are variable according to the impedance of a external reference resistor(REXT); an input circuit for receiving an external signal through an input signal transferring line, and for transferring the input signal to the internal circuit; a termination circuit(150) for terminating the input signal transferring line in response to at least one of the impedance control codes; an output circuit of which impedance is variable according to the impedance control codes, for enabling an output signal transferring line according to the output signal from the internal circuit.
    • 目的:提供一种用于控制端接电路和片外驱动电路的阻抗的装置,通过仅使用一个参考电阻来控制阻抗。 构成:半导体集成电路器件(100)包括连接到外部参考电阻器的阻抗控制电路(160),用于产生可根据外部参考电阻器(REXT)的阻抗而变化的阻抗控制代码; 输入电路,用于通过输入信号传输线接收外部信号,并将输入信号传送到内部电路; 终端电路(150),用于响应于所述阻抗控制代码中的至少一个终止所述输入信号传输线; 阻抗根据阻抗控制代码而变化的输出电路,用于根据来自内部电路的输出信号实现输出信号传输线路。
    • 43. 发明公开
    • 온 디램 터미네이션 저항 조정 회로 및 그 방법
    • 用于调整DRAM终端电阻的电路,特别减少布局区域
    • KR1020040095912A
    • 2004-11-16
    • KR1020030026937
    • 2003-04-29
    • 에스케이하이닉스 주식회사
    • 최성민
    • G11C7/10
    • H04L25/0278
    • PURPOSE: A circuit for adjusting on DRAM termination resistor is provided to minimize the occupied area by employing a simple circuit scheme. CONSTITUTION: A circuit for adjusting on DRAM termination resistor includes a push up resistor adjustment unit, a pull down resistor adjustment unit and a resistor adjustment control unit(219). The push up resistor adjustment unit adjusts the resistance values of the first and the second inner resistors based on the external reference resistor. The pull down resistor adjustment unit adjusts the resistance values of the third inner resistor based on the second inner resistor adjusted in response to the adjustment of the push up resistor adjustment unit. And, the resistor adjustment control unit(219) controls in such a way that the push up resistor adjustment unit and the pull down resistor adjustment unit are alternatively operated during the predetermined adjustment number.
    • 目的:提供用于调整DRAM终端电阻的电路,通过采用简单的电路方案来最小化占用面积。 构成:用于调整DRAM终端电阻的电路包括上推电阻调节单元,下拉电阻调整单元和电阻调节控制单元(219)。 上推电阻调整单元根据外部基准电阻调整第一和第二内部电阻的电阻值。 下拉电阻调整单元根据上推电阻调节单元的调整而调整的第二内部电阻来调整第三内部电阻器的电阻值。 并且,电阻器调节控制单元219以预定的调整次数交替地操作上推电阻调节单元和下拉电阻调节单元的方式进行控制。
    • 45. 实用新型
    • 고속 디지털 신호 버스 매칭 장치
    • 高速数字信号总线匹配器
    • KR200331434Y1
    • 2003-10-30
    • KR2020030023438
    • 2003-07-21
    • 엘지전자 주식회사
    • 김영오
    • H04L12/02
    • G06F13/4068H03H7/38H04L25/0278
    • 본 고안은 고속 디지털 신호 송수신에 있어서, 수신단의 각 수신보드마다 종단 임피던스를 설치하고 종단 임피던스의 부하를 스위치에 의하여 선택적으로 제어함으로서 수신단에 실장되는 수신보드의 개수에 관계없이 일정한 수신단 임피던스를 유지하도록 하여 임피던스 매칭을 구현하기에 적당하도록 한 고속 디지털 신호 버스 매칭 장치에 관한 것이다.
      본 고안은, 신호를 발생하는 송신단과, 상기 송신단에서 출력되는 신호를 버스를 통해 공유하여 수신하는 하나 이상의 수신보드로 구성되는 수신단과, 상기 수신보드마다 각각 병렬 연결되어, 상기 수신단의 입력 임피던스가 일정하도록 유지하는 종단 임피던스와, 상기 송신단으로부터 신호를 받아 상기 종단 임피던스를 제어하는 스위치를 포함하여 구성되는 것을 특징으로 한다. 상기와 같은 구성에 의하면, 실장되는 수신보드의 개수에 관계 없이 수신단의 입력임피던스가 일정하게 유지되는 점이 있다.
    • 47. 发明授权
    • 저 소비전력으로 2진 논리신호를 전송하는 인터페이스 회로 및 방법
    • 저소비전력으로2진논리신호를전송하는인터페이스회로및방저
    • KR100356074B1
    • 2003-03-15
    • KR1019970025224
    • 1997-06-17
    • 오끼 덴끼 고오교 가부시끼가이샤
    • 도미따다까시
    • G06F13/14
    • H04L25/0292H03K5/153H03K19/0175H04L25/0278H04L25/029
    • An interface circuit and method for transmitting a binary logic signal from a first electronic circuit to a second electronic circuit over a transmission line coupled to said first electronic circuit by a first terminal and to said second electronic circuit by a second terminal. The interface circuit transmits the binary logic signal by transmitting a pulse at a first potential at each falling transition of the binary logic signal, and a pulse at a second potential at each rising transition of the binary logic signal. At other times, the output terminal of a driver circuit is placed in a high-impedance state. A receiver circuit outputs a first logic Level upon receiving a pulse at the first potential, and outputs a second logic level upon receiving a pulse at the second potential. Output of these logic levels is maintained until the next pulse is received. The transmission line is preferably terminated at a potential intermediate between the first and second potentials.
    • 一种接口电路和方法,用于通过第一终端通过耦合到所述第一电子电路的传输线将第一电子电路的二进制逻辑信号传输到第二电子电路,并通过第二终端传输到所述第二电子电路。 接口电路通过在二进制逻辑信号的每次下降转变时以第一电位发送脉冲并且在二进制逻辑信号的每个上升转变时以第二电位发送脉冲来发送二进制逻辑信号。 在其他时候,驱动器电路的输出端子处于高阻抗状态。 接收器电路在接收到处于第一电位的脉冲时输出第一逻辑电平,并且在接收到处于第二电位的脉冲时输出第二逻辑电平。 这些逻辑电平的输出一直保持到接收到下一个脉冲。 传输线优选终止于第一和第二电位之间的电位中间。
    • 48. 发明公开
    • 저전압 차동 신호 통신 시스템
    • 低电压差分信号(LSD)通信系统
    • KR1020000074847A
    • 2000-12-15
    • KR1019990019068
    • 1999-05-26
    • 삼성전자주식회사
    • 김건태이정배
    • H04B7/24
    • H04B1/40H04L25/0278
    • PURPOSE: A low voltage differential signaling(LSD) communication system is provided to set up resistors on stub transmission lines connected with memory devices to control resistance, so as to prevent impedance mismatching caused when length of the stub transmission lines becomes longer. CONSTITUTION: Many integrated circuits(ICs) transceive low voltage differential signaling(LSD) signals. First/second main transmission lines(L1,L2) transmit the LSD signals. First stub transmission lines(S11-Sn1) connected between the ICs and the first main transmission line transmit the LSD signals. Second stub transmission lines(S12-Sn2) connected between the ICs and the second main transmission line transmit the LSD signals. Resisters(R1-Rn) correspond to the ICs, respectively, and are connected between the first stub transmission lines and the second stub transmission lines.
    • 目的:提供低电压差分信号(LSD)通信系统,用于在与存储器件连接的短线传输线上设置电阻以控制电阻,以防止短线传输线长度变长时引起的阻抗失配。 构成:许多集成电路(IC)收发低电压差分信号(LSD)信号。 第一/第二主传输线(L1,L2)发送LSD信号。 连接在IC和第一主传输线之间的第一短截线传输线(S11-Sn1)发送LSD信号。 连接在IC和第二主传输线之间的第二短接传输线(S12-Sn2)发送LSD信号。 电阻(R1-Rn)分别对应于IC,并且连接在第一短截线传输线和第二短截线传输线之间。