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    • 41. 发明授权
    • Input circuit and output circuit
    • 输入电路和输出电路
    • US07149267B2
    • 2006-12-12
    • US10995124
    • 2004-11-24
    • Yutaka TeradaTakefumi Yoshikawa
    • Yutaka TeradaTakefumi Yoshikawa
    • H04L7/00
    • G11C7/1093G11C7/1051G11C7/1057G11C7/1078G11C7/22
    • An input circuit includes: a comparator; first and second delay circuits; a selector; an input buffer; and a holding circuit. The comparator compares the leading and/or trailing edges of a data signal, supplied from the input buffer, to an edge of a clock signal on which the data signal is intended to be latched. Based on the results of the comparison, the first and second delay circuits delay the clock signal for respectively predetermined amounts of time. If the data signal is logically high, then the selector selects a delayed clock signal supplied from the first delay circuit. Alternatively, if the data signal is logically low, then the selector selects another delayed clock signal supplied from the second delay circuit. Then, the delayed clock signal, selected by the selector, is latched in the holding circuit. The input circuit with such a configuration prevents skewing from being caused by a difference in length between the transition interval of the data signal from H into L level and that of the data signal from L into H level. As a result, data can be transferred at a much higher speed even if the clock frequency is very high.
    • 输入电路包括:比较器; 第一和第二延迟电路; 选择器 一个输入缓冲区; 和保持电路。 比较器将从输入缓冲器提供的数据信号的前沿和/或后沿比较到要锁存数据信号的时钟信号的边沿。 基于比较结果,第一和第二延迟电路分别延迟时钟信号预定的时间量。 如果数据信号逻辑高,则选择器选择从第一延迟电路提供的延迟时钟信号。 或者,如果数据信号在逻辑上低,则选择器选择从第二延迟电路提供的另一延迟时钟信号。 然后,由选择器选择的延迟时钟信号被锁存在保持电路中。 具有这种配置的输入电路防止由数据信号从H变为L电平的过渡间隔和从L变为H电平的数据信号之间的长度差引起的偏移。 因此,即使时钟频率非常高,也可以以更高的速度传输数据。
    • 44. 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。
    • 45. 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。
    • 48. 发明授权
    • Time counting circuit, pulse converting circuit and FM demodulating circuit
    • 时间计数电路,脉冲转换电路和FM解调电路
    • US06172557B2
    • 2001-01-09
    • US09398817
    • 1999-09-20
    • Yutaka TeradaKeiichi KusumotoAkira Matsuzawa
    • Yutaka TeradaKeiichi KusumotoAkira Matsuzawa
    • H03D300
    • G04F10/005G01R29/027H03D3/04H03K9/06
    • Provided is a time counting circuit which can measure the time taken from the rising edge to the falling edge of a pulse signal and the time from the falling edge to the rising edge thereof. The time counting circuit according to the present invention comprises a measuring circuit for measuring the time between either of the rising and falling edges of the pulse signal, and a pulse converting circuit for converting a pulse signal to be measured to a pulse signal having either of the edges in accordance with the rising edge of the pulse signal to be measured and having either of the edges in accordance with the falling edge of the pulse signal to be measured. The time between either of the edges of the pulse signal converted by the pulse converting circuit is measured by the measuring circuit. The time obtained by measurement is the time taken from the rising edge to the falling edge of the pulse signal to be measured or the time taken from the falling edge to the rising edge thereof.
    • 提供了一种时间计数电路,其可以测量从脉冲信号的上升沿到下降沿的时间以及从下降沿到上升沿的时间。 根据本发明的计时电路包括:测量脉冲信号的上升沿和下降沿之间的时间的测量电路;以及脉冲转换电路,用于将要测量的脉冲信号转换成具有 根据要测量的脉冲信号的上升沿的边缘,并根据要测量的脉冲信号的下降沿具有任一边缘。 由脉冲转换电路转换的脉冲信号的任一边之间的时间由测量电路测量。 通过测量获得的时间是从要测量的脉冲信号的上升沿到下降沿或从下降沿到其上升沿的时间所花费的时间。
    • 50. 发明授权
    • Thermoplastic resin composition
    • 热塑性树脂组合物
    • US5212256A
    • 1993-05-18
    • US610205
    • 1990-11-08
    • Yukio MizunoTakashi MaruyamaHiroomi AbeYutaka Terada
    • Yukio MizunoTakashi MaruyamaHiroomi AbeYutaka Terada
    • C08L61/20C08L71/12C08L77/00
    • C08L71/123C08L77/00C08L61/20Y10S525/905
    • The present invention provides a thermoplastic resin composition which is improved in compatibility between polyphenylene ether and polyamide and is excellent in processability and impact strength. This composition comprises:(A) 100 parts by weight of a composition comprising 95-5% by weight of a polyphenylene ether obtained by oxidation polymerization of one or more of phenol compounds represented by the following formula: ##STR1## (wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 which may be identical or different, each represents a hydrogen atom, a halogen atom, a hydrocarbon radical or a substituted hydrocarbon radical and at least one of them is a hydrogen atom) and 5-95% by weight of a polyamide,(B) 0-30 parts by weight of an impact strength modifier, and(C) 0.01-10 parts by weight of an amino resin obtained by modifying with an alcohol an addition reaction product of formaldehyde and at least one compound selected from the group consisting of melamine, guanamine and urea.
    • 本发明提供一种提高聚苯醚和聚酰胺之间的相容性并且加工性和冲击强度优异的热塑性树脂组合物。 该组合物包含:(A)100重量份的组合物,其包含95-5重量%的通过氧化聚合一种或多种下式表示的酚化合物获得的聚苯醚:其中R1,R2 可以相同或不同的R 3,R 4和R 5各自表示氢原子,卤素原子,烃基或取代烃基,并且其中至少一个为氢原子)和5-95重量% 聚酰胺,(B)0-30重量份的冲击强度改性剂,和(C)0.01-10重量份通过用醇改性得到的氨基树脂,所述加成反应产物与所选择的至少一种化合物 由三聚氰胺,胍胺和尿素组成。