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    • 2. 发明授权
    • Semiconductor integrated circuit and semiconductor integrated circuit system having serially interconnectable data buses
    • 具有串行可互连数据总线的半导体集成电路和半导体集成电路系统
    • US06297675B1
    • 2001-10-02
    • US09478530
    • 2000-01-06
    • Hironori AkamatsuYutaka TeradaTakashi HirataYukio ArimaSatoshi TakahashiTadahiro YoshidaYoshihide KomatsuHiroyuki Yamauchi
    • Hironori AkamatsuYutaka TeradaTakashi HirataYukio ArimaSatoshi TakahashiTadahiro YoshidaYoshihide KomatsuHiroyuki Yamauchi
    • H03B100
    • H03K19/018514Y10T307/549
    • A data line pair and a strobe line pair are provided between first and second chips to exchange data therebetween. The first chip includes an output circuit and a controller for controlling the output circuit. The second chip includes an input circuit. For example, the output circuit supplies a direct current from a power supply to one of the data lines. Then, the input circuit feeds back the received current to the output circuit through a pair of terminal resistors and the other data line. Subsequently, the output circuit supplies the fed back direct current to one of the strobe lines. In response, the input circuit feeds back the received current again to the output circuit through another pair of terminal resistors and the other strobe line. And then the fed back current is drained to the ground. Thus, compared to driving the data and strobe line pairs separately with the same amount of current supplied, the current dissipation can be halved. In this manner, the present invention is applicable to reduction of current dissipation when data should be transmitted at high speeds through multiple data bus pairs that are driven with a current supplied.
    • 在第一和第二芯片之间提供数据线对和选通线对,以在它们之间交换数据。 第一芯片包括输出电路和用于控制输出电路的控制器。 第二芯片包括输入电路。 例如,输出电路将电流从电源提供给数据线之一。 然后,输入电路通过一对端子电阻和另一条数据线将接收的电流反馈到输出电路。 随后,输出电路将反馈的直流电流提供给选通线之一。 作为响应,输入电路通过另一对端子电阻器和另一个选通线路将接收到的电流再次反馈到输出电路。 然后将反馈电流排到地面。 因此,与以相同的电流量驱动数据和选通线对相比,电流消耗可以减半。 以这种方式,本发明可应用于当通过以所提供的电流驱动的多个数据总线对以高速传输数据时,减少电流消耗。
    • 6. 发明授权
    • Common mode bias generator
    • 共模偏置发生器
    • US06262568B1
    • 2001-07-17
    • US09734191
    • 2000-12-12
    • Yoshihide KomatsuHironori AkamatsuTakashi HirataSatoshi TakahashiYutaka Terada
    • Yoshihide KomatsuHironori AkamatsuTakashi HirataSatoshi TakahashiYutaka Terada
    • G05F304
    • G05F3/205
    • An inventive potential generator generates a predetermined potential and includes first operational amplifier, current supply circuit and current sink circuit. A first reference potential is applied to the non-inverting input terminal of the first amplifier and a potential at the output node of the first amplifier is not only applied to the inverting input terminal of the first amplifier but also used as the output of the generator. The current supply circuit supplies a current to the output node of the first amplifier if the potential at the output node of the first amplifier is lower than a predefined level. And the current sink circuit drains a current from the output node of the first amplifier if the potential at the output node of the first amplifier is higher than the predefined level.
    • 本发明的潜在发生器产生预定电位并且包括第一运算放大器,电流供应电路和电流吸收电路。 第一参考电位被施加到第一放大器的非反相输入端,并且第一放大器的输出节点处的电位不仅被施加到第一放大器的反相输入端,而且还用作发生器的输出 。 如果第一放大器的输出节点处的电位低于预定义电平,则电流供应电路向第一放大器的输出节点提供电流。 并且如果第一放大器的输出节点处的电位高于预定义电平,则电流吸收电路从第一放大器的输出节点漏出电流。
    • 8. 发明授权
    • Semiconductor integrated circuit realizing electrical interface
    • 半导体集成电路实现电接口
    • US06404370B2
    • 2002-06-11
    • US09828936
    • 2001-04-10
    • Yutaka TeradaHironori AkamatsuSatoshi TakahashiTakashi HirataYoshihide Komatsu
    • Yutaka TeradaHironori AkamatsuSatoshi TakahashiTakashi HirataYoshihide Komatsu
    • H03M300
    • H04L12/40052H04L12/40032
    • A semiconductor integrated circuit includes receiver, potential sensor and output fixing circuit. The receiver receives a differential signal that has been transmitted through a twisted pair of signal lines, and outputs a signal in accordance with the differential signal. The potential sensor senses a variation in in-phase potential of the differential signal transmitted through the twisted pair. And the output fixing circuit fixes an output of the receiver at a certain value if the variation sensed by the potential sensor is equal to or greater than a predetermined level. In this configuration, once the variation in the in-phase potential of the differential signal has reached the predetermined level, the output of the receiver is fixed at the certain value. Accordingly, even if the receiver operates erroneously due to the in-phase potential variation, the erroneous output of the receiver is not supplied to the next stage like a digital section.
    • 半导体集成电路包括接收器,电位传感器和输出固定电路。 接收机接收通过双绞信号线发送的差分信号,并根据差分信号输出信号。 电位传感器检测通过双绞线传输的差分信号的同相电位变化。 如果由电位传感器感测到的变化量等于或大于预定水平,则输出定影电路将接收器的输出固定在一定值。 在该配置中,一旦差分信号的同相电位的变化已经达到预定电平,则接收器的输出被固定在该特定值。 因此,即使接收器由于同相电位变化而错误地操作,接收机的错误输出也不像数字部分那样被提供给下一个级。
    • 9. 发明授权
    • Output driver with current compensation circuit for variation of common mode voltage
    • 具有电流补偿电路的输出驱动器,用于变化共模电压
    • US06329843B1
    • 2001-12-11
    • US09684979
    • 2000-10-10
    • Takashi HirataHironori AkamatsuSatoshi TakahashiYutaka TeradaYoshihide Komatsu
    • Takashi HirataHironori AkamatsuSatoshi TakahashiYutaka TeradaYoshihide Komatsu
    • H03K190175
    • H04L25/028H04L25/0276
    • A current driver, a common mode voltage monitoring circuit and a current compensator are provided to drive a twisted pair cable, which is made up of two signal lines coupled to a terminal bias voltage through respective terminal resistors. The common mode voltage monitoring circuit monitors a difference between a common mode voltage of the twisted pair cable and a supply voltage level for the current driver. And the current compensator is coupled to the twisted pair cable to compensate for an output current of the current driver in accordance with a result of monitoring performed by the common mode voltage monitoring circuit. If the current driver has decreased its current drivability due to a drop of the supply voltage level of the current driver or a variation in the common mode voltage of the twisted pair cable, then the current compensator compensates for the decrease. Thus, the current driver can continuously operate in a broad voltage range to supply a constant current.
    • 提供电流驱动器,共模电压监视电路和电流补偿器来驱动双绞线电缆,双绞线电缆由通过相应的终端电阻器耦合到端子偏置电压的两根信号线组成。 共模电压监视电路监视双绞线电缆的共模电压与当前驱动器的电源电压差之间的差异。 并且电流补偿器耦合到双绞线电缆,以根据共模电压监视电路执行的监视结果补偿电流驱动器的输出电流。 如果当前的驱动器由于当前驱动器的电源电压下降或双绞线的共模电压的变化而降低其电流驱动能力,则电流补偿器补偿减小。 因此,电流驱动器可以在宽电压范围内连续工作以提供恒定电流。