会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Frequency comparator with malfunction reduced and phase-locked state detecting circuit using the same
    • 频率比较器故障降低,锁相状态检测电路采用相同方式
    • US06707319B2
    • 2004-03-16
    • US10327864
    • 2002-12-26
    • Tsutomu Yoshimura
    • Tsutomu Yoshimura
    • G01R2500
    • H03D13/004
    • A frequency comparator detects the phase of a data signal DATA by using four-phase clocks ICLK, /ICLK, QCLK and /QCLK as a reference and detects a change in the phase. A counting processing unit counts a period in which a control signal UP2 or DN2 is activated within a predetermined period, and outputs an overflow detection signal LOL2 if the frequency is high. A hysteresis generating unit changes a signal LOL to the L level only after signal LOL goes low X times consecutively. On the other hand, after signal LOL is set to the L level once, the hysteresis generating unit changes signal LOL to the H level only after signal LOL2 goes high X times consecutively. With such a configuration, a phase-locked state detecting circuit with reduced malfunction even when a data signal having larger jitter is input can be provided.
    • 频率比较器通过使用四相时钟ICLK,/ ICLK,QCLK和/ QCLK作为参考来检测数据信号DATA的相位,并检测相位的变化。 计数处理单元计算在预定时间段内控制信号UP2或DN2被激活的时段,并且如果频率高,则输出溢出检测信号LOL2。 迟滞发生单元仅在信号LOL连续低X次后将信号LOL改变为L电平。 另一方面,在信号LOL被设置为L电平一次之后,滞后发生单元仅在信号LOL2连续变高X次之后才将信号LOL改变为H电平。 通过这样的结构,即使输入了具有较大抖动的数据信号,也能够提供具有降低的故障的锁相状态检测电路。
    • 3. 发明授权
    • Ninety-degree phase shifter
    • 九十度移相器
    • US6160434A
    • 2000-12-12
    • US177379
    • 1998-10-23
    • Tsutomu YoshimuraYasunobu NakaseYoshikazu MorookaNaoya Watanabe
    • Tsutomu YoshimuraYasunobu NakaseYoshikazu MorookaNaoya Watanabe
    • H03K5/00H03K5/13
    • H03K5/133H03K2005/00039H03K2005/00286
    • Transistors (MP1 and MP2) supply a current (I.sub.0) for nodes (K and L), respectively. Transistors (MN10 and MN11) draw the same current from nodes (K and L), respectively. A parallel connection of serial connections (N1 and N2) draws a current (I.sub.1) from the node (K) only when an exclusive OR of clocks (S1 and S2) is "H". On the other hand, a parallel connection of serial connections (N3 and N4) draws a current (I.sub.1) from the node (L) only when the exclusive OR of clocks (S1 and S2) is "L". When the current (I.sub.1) is drawn from the node (K), the current (I.sub.1) flows out from the node (L) and when the current (I.sub.1) is drawn from the node (L), the current (I.sub.1) flows into the node (L). In the serial connections (N1 to N4), each of the clocks (S1 and S2) and their inverted signals (S1B and S2B) is applied to one of the gates of the transistors (MN1 to MN8) and therefore a uniform input load is obtained. With this configuration provided is a 90-degree phase shifter which achieves the uniform input load to improve a phase offset.
    • 晶体管(MP1和MP2)分别为节点(K和L)提供电流(I0)。 晶体管(MN10和MN11)分别从节点(K和L)绘出相同的电流。 串行连接(N1和N2)的并联连接仅在时钟(S1和S2)的异或“为”H“时从节点(K)抽出电流(I1)。 另一方面,仅当时钟(S1和S2)的异或为“L”时,串行连接(N3和N4)的并联连接从节点(L)抽出电流(I1)。 当从节点(K)抽出电流(I1)时,电流(I1)从节点(L)流出,当电流(I1)从节点(L)抽出时,电流(I1)流 进入节点(L)。 在串行连接(N1〜N4)中,每个时钟(S1和S2)及其反相信号(S1B和S2B)被施加到晶体管(MN1至MN8)的一个栅极,因此均匀的输入负载 获得。 所提供的这种配置是实现均匀输入负载以提高相位偏移的90度移相器。
    • 8. 发明授权
    • Amplifier circuit
    • 放大器电路
    • US07295072B2
    • 2007-11-13
    • US11197376
    • 2005-08-05
    • Jun TakasoTsutomu YoshimuraNorio Higashisaka
    • Jun TakasoTsutomu YoshimuraNorio Higashisaka
    • H03F3/45
    • H03F3/45085H03F2203/45631H03F2203/45652H03F2203/45702
    • An amplifier circuit includes a first differential amplifier circuit, a second differential amplifier circuit which amplifies an output signal from the first differential amplifier circuit, and an active feedback circuit which performs waveform shaping on the output signal from the first differential amplifier circuit by feeding back an output signal from the second differential amplifier circuit. The active feedback circuit includes first and second transistors having collectors or drains respectively connected to respective output nodes of the first differential amplifier circuit, bases or gates respectively connected to two output nodes of the second differential amplifier circuit, and emitters or sources connected in common, and a first current source which has a first end connected to the emitters or sources of the first and second transistors, and a second end connected to a low-voltage power supply, and producing a current that can be externally adjusted.
    • 放大器电路包括:第一差分放大器电路,放大来自第一差分放大器电路的输出信号的第二差分放大器电路;以及有源反馈电路,其对来自第一差分放大器电路的输出信号进行波形整形, 来自第二差分放大器电路的输出信号。 有源反馈电路包括具有分别连接到第一差分放大器电路的相应输出节点的收集器或漏极的第一和第二晶体管,分别连接到第二差分放大器电路的两个输出节点的基极或门,以及共同连接的发射器或源, 以及第一电流源,其具有连接到第一和第二晶体管的发射极或源极的第一端,以及连接到低压电源的第二端,并且产生可以从外部调节的电流。
    • 9. 发明申请
    • Automatic frequency correction PLL circuit
    • 自动频率校正PLL电路
    • US20050226357A1
    • 2005-10-13
    • US11087591
    • 2005-03-24
    • Tsutomu Yoshimura
    • Tsutomu Yoshimura
    • H03B5/12H03L7/095H03L7/099H03L7/10H03M1/12
    • H03L7/10H03L7/099
    • An automatic frequency correction phase-locked loop (PLL) circuit includes an analog control circuit and a digital control circuit. The digital control circuit includes a High-side comparator and a Low-side comparator which receive an analog control voltage, a state monitor circuit, and a counter and decoder circuit. At least one of the High-side comparator and the Low-side comparator includes a threshold switching circuit which selectively gives a first threshold and a second threshold having different. When the analog control voltage remains between the High-side threshold and the Low-side threshold in a state in which the threshold switching circuit gives the first threshold, the threshold switching circuit switches the first threshold to the second threshold and expands the interval between the High-side threshold and the Low-side threshold.
    • 自动频率校正锁相环(PLL)电路包括模拟控制电路和数字控制电路。 数字控制电路包括接收模拟控制电压的高侧比较器和低侧比较器,状态监视电路以及计数器和解码器电路。 高侧比较器和低侧比较器中的至少一个包括阈值切换电路,其选择性地给出具有不同的第一阈值和第二阈值。 当在阈值切换电路给出第一阈值的状态下模拟控制电压保持在高侧阈值和低侧阈值之间时,阈值切换电路将第一阈值切换到第二阈值, 高边阈值和低边阈值。