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    • 3. 发明申请
    • Mixed-voltage I/O buffer
    • 混合电压I / O缓冲器
    • US20110241752A1
    • 2011-10-06
    • US13067598
    • 2011-06-13
    • Chua-Chin WangWei-Chih ChangTzung-Je LeeKuo-Chan Huang
    • Chua-Chin WangWei-Chih ChangTzung-Je LeeKuo-Chan Huang
    • H03K5/08
    • H03K19/0013H03K3/356113H03K19/018521
    • A mixed-voltage I/O buffer includes an input buffer circuit. The input buffer circuit includes a first inverter, a first voltage level limiting circuit, a first voltage level pull-up circuit, an input stage circuit, and a logic calibration circuit. The first inverter inverts an input signal to generate a first control signal. The first voltage level limiting circuit limits voltage level of an external signal to generate the input signal transmitted to the first inverter to prevent electrical overstress of the first inverter. The first voltage level pull-up circuit is controlled by the first control signal to pull up voltage level of the input signal inputted into the first inverter. The input stage circuit receives the first control signal to generate corresponding digital signals inputted into a core circuit. The logic calibration circuit calibrates voltage level of the first control signal when the first inverter mis-operates due to the input signal having a low voltage level.
    • 混合电压I / O缓冲器包括输入缓冲电路。 输入缓冲电路包括第一反相器,第一电压电平限制电路,第一电压电平上拉电路,输入级电路和逻辑校准电路。 第一反相器反相输入信号以产生第一控制信号。 第一电压电平限制电路限制外部信号的电压电平,以产生传输到第一逆变器的输入信号,以防止第一逆变器的电过载。 第一电压上拉电路由第一控制信号控制,以提高输入到第一反相器的输入信号的电压电平。 输入级电路接收第一控制信号以产生输入到核心电路的相应的数字信号。 当由于输入信号具有低电压电平而使第一反相器误操作时,逻辑校准电路校准第一控制信号的电压电平。
    • 4. 发明授权
    • Device for jitter measurement and method thereof
    • 抖动测量装置及其方法
    • US07957923B2
    • 2011-06-07
    • US12117176
    • 2008-05-08
    • An-Sheng ChaoSoon-Jyh ChangChih-Haur HuangKuo-Chan HuangShih-Ming Luo
    • An-Sheng ChaoSoon-Jyh ChangChih-Haur HuangKuo-Chan HuangShih-Ming Luo
    • G06F19/00H04B3/46
    • G01R31/31709
    • The device for jitter measurement and a method thereof are provided. The device for jitter measure includes a signal retrieving module, a signal amplifying module, an edge detecting module, and a time-to-digital converting module. The signal retrieving module receives a signal-under-test, and retrieves a first pulse signal having a pulse width equal to a period of the signal-under-test. The signal amplifying module amplifies the pulse width of the first pulse signal and thereby generates a second pulse signal. The edge detecting module detects a rising edge and a falling edge of the second pulse signal, and generates a first indication signal and a second indication signal according to the respective detected results. The time-to-digital converting module converts the pulse width of the second pulse signal existed in time domain to a digital signal according to the first indication signal and the second indication signal.
    • 提供抖动测量装置及其方法。 用于抖动测量的装置包括信号检索模块,信号放大模块,边缘检测模块和时间 - 数字转换模块。 信号检索模块接收待测信号,并检索具有等于被测信号的周期的脉冲宽度的第一脉冲信号。 信号放大模块放大第一脉冲信号的脉冲宽度,从而产生第二脉冲信号。 边缘检测模块检测第二脉冲信号的上升沿和下降沿,并根据各个检测结果生成第一指示信号和第二指示信号。 时间 - 数字转换模块根据第一指示信号和第二指示信号将时域中存在的第二脉冲信号的脉冲宽度转换为数字信号。
    • 5. 发明授权
    • Mixed-voltage tolerant I/O buffer and output buffer circuit thereof
    • 混合电压容限I / O缓冲器及其输出缓冲电路
    • US07839174B2
    • 2010-11-23
    • US12330768
    • 2008-12-09
    • Chua-Chin WangTzung-Je LeeYi-Cheng LiuKuo-Chan Huang
    • Chua-Chin WangTzung-Je LeeYi-Cheng LiuKuo-Chan Huang
    • H03K19/094
    • H03K19/018521
    • An output buffer circuit includes a high voltage detecting circuit, a dynamic gate bias generating circuit, an output stage circuit and a pad voltage detector. The high voltage detecting circuit detects a power supply voltage and generates a first and a second determining signals and a first and a second bias voltages according to the power supply voltage. The dynamic gate bias generating circuit is biased by the first and the second bias voltages and receives the first and the second determining signals, for converting logic control signals into corresponding gate bias voltages according to the first and the second determining signals. The pad voltage detector detects a voltage of an I/O pad and provides a pad voltage detecting signal for the output stage circuit to modify an output signal outputted to an I/O pad. A mixed-voltage input/output (I/O) buffer is disclosed herein.
    • 输出缓冲电路包括高电压检测电路,动态栅极偏置产生电路,输出级电路和焊盘电压检测器。 高电压检测电路检测电源电压,并根据电源电压产生第一和第二确定信号以及第一和第二偏置电压。 动态栅极偏置产生电路被第一和第二偏置电压偏置,并接收第一和第二确定信号,用于根据第一和第二确定信号将逻辑控制信号转换成相应的栅极偏置电压。 焊盘电压检测器检测I / O焊盘的电压,并为输出级电路提供焊盘电压检测信号,以修改输出到I / O焊盘的输出信号。 本文公开了混合电压输入/输出(I / O)缓冲器。
    • 6. 发明申请
    • Mixed-Voltage Tolerant I/O Buffer and Output Buffer Circuit Thereof
    • 混合电压容限I / O缓冲器和输出缓冲电路
    • US20100141324A1
    • 2010-06-10
    • US12330768
    • 2008-12-09
    • Chua-Chin WangTzung-Je LeeYi-Cheng LiuKuo-Chan Huang
    • Chua-Chin WangTzung-Je LeeYi-Cheng LiuKuo-Chan Huang
    • H03L5/00
    • H03K19/018521
    • An output buffer circuit includes a high voltage detecting circuit, a dynamic gate bias generating circuit, an output stage circuit and a pad voltage detector. The high voltage detecting circuit detects a power supply voltage and generates a first and a second determining signals and a first and a second bias voltages according to the power supply voltage. The dynamic gate bias generating circuit is biased by the first and the second bias voltages and receives the first and the second determining signals, for converting logic control signals into corresponding gate bias voltages according to the first and the second determining signals. The pad voltage detector detects a voltage of an I/O pad and provides a pad voltage detecting signal for the output stage circuit to modify an output signal outputted to an I/O pad. A mixed-voltage input/output (I/O) buffer is disclosed herein.
    • 输出缓冲电路包括高电压检测电路,动态栅极偏置产生电路,输出级电路和焊盘电压检测器。 高电压检测电路检测电源电压,并根据电源电压产生第一和第二确定信号以及第一和第二偏置电压。 动态栅极偏置产生电路被第一和第二偏置电压偏置,并接收第一和第二确定信号,用于根据第一和第二确定信号将逻辑控制信号转换成相应的栅极偏置电压。 焊盘电压检测器检测I / O焊盘的电压,并为输出级电路提供焊盘电压检测信号,以修改输出到I / O焊盘的输出信号。 本文公开了混合电压输入/输出(I / O)缓冲器。
    • 7. 发明申请
    • Mixed-voltage I/O buffer
    • 混合电压I / O缓冲器
    • US20100097117A1
    • 2010-04-22
    • US12289132
    • 2008-10-21
    • Chua-Chin WangWei-Chih ChangTzung-Je LeeKuo-Chan Huang
    • Chua-Chin WangWei-Chih ChangTzung-Je LeeKuo-Chan Huang
    • H03L5/00
    • H03K19/0013H03K3/356113H03K19/018521
    • A mixed-voltage input/output (I/O) buffer includes an output buffer circuit. The output buffer circuit includes an output stage circuit, a gate-tracking circuit and a floating N-well circuit. The output stage circuit includes stacked pull-up P-type transistors and stacked pull-down N-type transistors, in which a first P-type transistor of the stacked pull-up P-type transistors and a first N-type transistor of the stacked pull-down N-type transistors are coupled to an I/O pad. The gate-tracking circuit controls gate voltage of the first P-type transistor in accordance with a voltage of the I/O pad to prevent leakage current. The floating N-well circuit provides N-well voltages for an N-well of the first P-type transistor and an N-well of a second P-type transistor, controlling gate voltage of the first P-type transistor, of the gate-tracking circuit to prevent leakage current.
    • 混合电压输入/输出(I / O)缓冲器包括输出缓冲电路。 输出缓冲电路包括输出级电路,栅极跟踪电路和浮动N阱电路。 输出级电路包括堆叠上拉P型晶体管和堆叠式下拉式N型晶体管,其中堆叠上拉P型晶体管的第一P型晶体管和第一N型晶体管 堆叠的下拉式N型晶体管耦合到I / O焊盘。 栅极跟踪电路根据I / O焊盘的电压来控制第一P型晶体管的栅极电压,以防止漏电流。 浮动N阱电路为第一P型晶体管的N阱和第二P型晶体管的N阱提供N阱电压,控制栅极的第一P型晶体管的栅极电压 跟踪电路,以防止漏电流。
    • 9. 发明申请
    • INPUT OUTPUT DEVICE FOR MIXED-VOLTAGE TOLERANT
    • 用于混合电压稳定器的输入输出装置
    • US20090066367A1
    • 2009-03-12
    • US12184271
    • 2008-08-01
    • Chua-Chin WangTzung-Je LeeKuo-Chan HuangTie-Yan Chang
    • Chua-Chin WangTzung-Je LeeKuo-Chan HuangTie-Yan Chang
    • H03K19/0175
    • H03K19/00315
    • An input output device coupled between a core circuit and a pad and including an output cell, an input cell, and a pre-driver. The output cell includes an output stage and a voltage level converter. The output stage includes a first transistor and a second transistor connected to the first transistor in serial between a first supply voltage and a second voltage. The voltage level converter generates a first gate voltage to the first transistor according to the first voltage and a data signal. When the first supply voltage is increased, the first gate voltage is increased. When the data signal is at a high level, the first transistor is turned on. The input cell includes a pull unit and a first N-type transistor. The pre-driver turns off the first and the second transistors.
    • 耦合在核心电路和焊盘之间并包括输出单元,输入单元和预驱动器的输入输出设备。 输出单元包括输出级和电压电平转换器。 输出级包括在第一电源电压和第二电压之间串联连接到第一晶体管的第一晶体管和第二晶体管。 电压电平转换器根据第一电压和数据信号产生到第一晶体管的第一栅极电压。 当第一电源电压增加时,第一栅极电压增加。 当数据信号处于高电平时,第一晶体管导通。 输入单元包括拉单元和第一N型晶体管。 预驱动器关闭第一和第二晶体管。