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    • 2. 发明授权
    • Semiconductor integrated circuit device
    • 半导体集成电路器件
    • US07323901B2
    • 2008-01-29
    • US11375109
    • 2006-03-15
    • Satoshi AoyamaAtsuhiro HayashiYasuhiko Takahashi
    • Satoshi AoyamaAtsuhiro HayashiYasuhiko Takahashi
    • H03K19/003
    • H04L25/0278H03H11/30
    • A plurality of sets of circuits are provided, each of which generates an impedance code through the use of an impedance control circuit in association with a resistive element connected to an external terminal, and each of which varies the impedance in accordance with such an impedance code. The impedance control circuit includes an impedance comparator which is formed equivalently to the resistive element and the plurality of sets of circuits, and which performs an impedance comparison with each of a plurality of replica circuits to form an up signal that increases the impedance and a down signal that decreases the impedance. Counters are provided adjacent to the individuals of the plurality of sets of circuits to thereby generate the impedance codes in response to the up signal and the down signal.
    • 提供多组电路,每组电路通过与连接到外部端子的电阻元件相关联地使用阻抗控制电路产生阻抗代码,并且每个电路根据这种阻抗代码改变阻抗 。 阻抗控制电路包括阻抗比较器,该阻抗比较器等效于电阻元件和多组电路,并且与多个复制电路中的每一个执行阻抗比较,以形成增加阻抗的向上信号和向下 信号降低阻抗。 提供与多组电路的个体相邻的计数器,从而响应于上升信号和下降信号而产生阻抗代码。
    • 3. 发明申请
    • Semiconductor integrated circuit device
    • 半导体集成电路器件
    • US20060158216A1
    • 2006-07-20
    • US11375109
    • 2006-03-15
    • Satoshi AoyamaAtsuhiro HayashiYasuhiko Takahashi
    • Satoshi AoyamaAtsuhiro HayashiYasuhiko Takahashi
    • H03K19/003
    • H04L25/0278H03H11/30
    • A plurality of sets of circuits are provided, each of which generates an impedance code through the use of an impedance control circuit in association with a resistive element connected to an external terminal, and each of which varies the impedance in accordance with such an impedance code. The impedance control circuit includes an impedance comparator which is formed equivalently to the resistive element and the plurality of sets of circuits, and which performs an impedance comparison with each of a plurality of replica circuits to form an up signal that increases the impedance and a down signal that decreases the impedance. Counters are provided adjacent to the individuals of the plurality of sets of circuits to thereby generate the impedance codes in response to the up signal and the down signal.
    • 提供多组电路,每组电路通过与连接到外部端子的电阻元件相关联地使用阻抗控制电路产生阻抗代码,并且每个电路根据这种阻抗代码改变阻抗 。 阻抗控制电路包括阻抗比较器,该阻抗比较器等效于电阻元件和多组电路,并且与多个复制电路中的每一个执行阻抗比较,以形成增加阻抗的向上信号和向下 信号降低阻抗。 提供与多组电路的个体相邻的计数器,从而响应于上升信号和下降信号而产生阻抗代码。
    • 5. 发明申请
    • SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE AND METHOD FOR EVALUATING AN EYE-OPENING MARGIN
    • 半导体集成电路装置和评估眼睛开放标志的方法
    • US20090224809A1
    • 2009-09-10
    • US12367067
    • 2009-02-06
    • Akira MatsumotoDaisuke HamanoAtsuhiro Hayashikzuhisa Suzuki
    • Akira MatsumotoDaisuke HamanoAtsuhiro Hayashikzuhisa Suzuki
    • H03L7/00
    • H03L7/08H04L1/205H04L7/0008H04L7/0331H04L7/043
    • An eye-opening margin measurement method for a high-speed serial data reception circuit which uses a circuit for eye-opening margin measurement involving operation of a clock data recovery circuit without fixing the clock phase. In this method, an error acceleration test can also be made on received data by giving an offset pulse signal to phase information to add a jitter component. The method uses a semiconductor integrated circuit device which includes a serializer/deserializer circuit (SerDes) for receiving serial data and a reference serializer/deserializer circuit (Ref_SerDes) for receiving an accompanying clock signal. The SerDes circuit converts received serial data into parallel data through a recovery clock whose phase is controlled using phase control signal P_CS generated by the Ref_SerDes circuit. An offset pulse signal Offset_Pulse from the pulse-forming circuit is applied to the phase control signal P_CS to make eye-opening margin measurement.
    • 一种用于高速串行数据接收电路的开眼边缘测量方法,其使用涉及在不固定时钟相位的情况下操作时钟数据恢复电路的眼睛开度边缘测量电路。 在该方法中,也可以通过向相位信息给出偏移脉冲信号来添加抖动分量,来对接收到的数据进行误差加速度测试。 该方法使用包括用于接收串行数据的串行器/解串行器电路(SerDes)和用于接收伴随时钟信号的参考串行器/解串行器电路(Ref_SerDes)的半导体集成电路器件。 SerDes电路通过恢复时钟将接收的串行数据转换成并行数据,恢复时钟的相位由Ref_SerDes电路生成的相位控制信号P_CS进行控制。 来自脉冲形成电路的偏移脉冲信号Offset_Pulse被施加到相位控制信号P_CS以进行开眼余量测量。
    • 7. 发明授权
    • Semiconductor integrated circuit device and method for evaluating an eye-opening margin
    • 半导体集成电路装置及评估开眼余量的方法
    • US08443243B2
    • 2013-05-14
    • US12367067
    • 2009-02-06
    • Akira MatsumotoDaisuke HamanoAtsuhiro HayashiKazuhisa Suzuki
    • Akira MatsumotoDaisuke HamanoAtsuhiro HayashiKazuhisa Suzuki
    • G06F11/00
    • H03L7/08H04L1/205H04L7/0008H04L7/0331H04L7/043
    • An eye-opening margin measurement method for a high-speed serial data reception circuit which uses a circuit for eye-opening margin measurement involving operation of a clock data recovery circuit without fixing the clock phase. In this method, an error acceleration test can also be made on received data by giving an offset pulse signal to phase information to add a jitter component. The method uses a semiconductor integrated circuit device which includes a serializer/deserializer circuit (SerDes) for receiving serial data and a reference serializer/deserializer circuit (Ref_SerDes) for receiving an accompanying clock signal. The SerDes circuit converts received serial data into parallel data through a recovery clock whose phase is controlled using phase control signal P_CS generated by the Ref_SerDes circuit. An offset pulse signal Offset_Pulse from the pulse-forming circuit is applied to the phase control signal P_CS to make eye-opening margin measurement.
    • 一种用于高速串行数据接收电路的开眼边缘测量方法,其使用涉及在不固定时钟相位的情况下操作时钟数据恢复电路的眼睛开度边缘测量电路。 在该方法中,也可以通过向相位信息给出偏移脉冲信号来添加抖动分量,来对接收到的数据进行误差加速度测试。 该方法使用包括用于接收串行数据的串行器/解串行器电路(SerDes)和用于接收伴随时钟信号的参考串行器/解串行器电路(Ref_SerDes)的半导体集成电路器件。 SerDes电路通过恢复时钟将接收的串行数据转换成并行数据,恢复时钟的相位由Ref_SerDes电路生成的相位控制信号P_CS进行控制。 来自脉冲形成电路的偏移脉冲信号Offset_Pulse被施加到相位控制信号P_CS以进行开眼余量测量。