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    • 5. 发明授权
    • Serial data input system
    • 串行数据输入系统
    • US08018445B2
    • 2011-09-13
    • US11542640
    • 2006-10-04
    • Tetsuya TokunagaHiroyuki AraiTakeshi Kimura
    • Tetsuya TokunagaHiroyuki AraiTakeshi Kimura
    • G09G5/00G06F3/038
    • G11C7/02G11C7/1036G11C7/1078G11C7/1087
    • Increase in power consumption and increase in power supply noise of a serial data input system are suppressed, while clock skew is more easily prevented. The serial data input system of this invention includes a shift register that takes in and shifts serially transferred display data in synchronization with a clock SCL, a clock counter that counts the number of clock pulses of the clock SCL and outputs each of clock count signals BIT08, BIT16 and BIT24 when the counted number of the clock pulses of the clock SCL reaches each of count numbers 8, 16 and 24 respectively, and registers into each of which the data stored in the shift register is transferred and stored collectively and in parallel in response to each of the clock count signals BIT08, BIP16 and BIT24 respectively.
    • 抑制串行数据输入系统的功耗增加和电源噪声增加,同时更容易防止时钟偏移。 本发明的串行数据输入系统包括一个移位寄存器,其与时钟SCL同步地接收和移位串行传送的显示数据,时钟计数器对时钟SCL的时钟脉冲数进行计数,并输出每个时钟计数信号BIT08 ,BIT16和BIT24,当时钟SCL的时钟脉冲的计数数量分别达到计数数8,16和24的每一个时,并且寄存到每个存储在移位寄存器中的数据被共同并且并行存储 分别响应于每个时钟计数信号BIT08,BIP16和BIT24。
    • 6. 发明授权
    • Interface circuit and a clock output method therefor
    • 接口电路及其时钟输出方法
    • US07724060B2
    • 2010-05-25
    • US11736913
    • 2007-04-18
    • Tetsuya TokunagaHiroyuki AraiShuji MotegiTakeshi HibinoTakeshi Kimura
    • Tetsuya TokunagaHiroyuki AraiShuji MotegiTakeshi HibinoTakeshi Kimura
    • G05F1/04H03K3/00
    • G06F1/04
    • An interface circuit outputting a clock signal and data to a data register configured to serially read in the data synchronously with the clock signal, in response to a change of a control signal for outputting the clock signal and the data from one logic level to the other logic level, the interface circuit comprising a clock output circuit configured to: detect a logic level of the clock signal when the control signal changes from the one logic level to the other logic level; output the clock signal on an as-is basis to the data register, when detecting one logic level of the clock signal; and output the clock signal after having changed from the other logic level to the one logic level, to the data register, when detecting the other logic level of the clock signal.
    • 一个接口电路,响应于用于输出时钟信号的控制信号和从一个逻辑电平到另一个逻辑电平的数据的变化,输出时钟信号和数据到数据寄存器,配置为与时钟信号同步地串行读取数据 逻辑电平,所述接口电路包括时钟输出电路,所述时钟输出电路被配置为:当所述控制信号从所述一个逻辑电平改变到另一逻辑电平时,检测所述时钟信号的逻辑电平; 当检测到时钟信号的一个逻辑电平时,将时钟信号原样输出到数据寄存器; 并且当检测到时钟信号的另一个逻辑电平时,在从另一个逻辑电平变为一个逻辑电平之后输出时钟信号到数据寄存器。
    • 7. 发明申请
    • Frequency adjustment circuit
    • 频率调节电路
    • US20060033583A1
    • 2006-02-16
    • US11196512
    • 2005-08-04
    • Tetsuya TokunagaHiroyuki AraiTakeshi KimuraRyouichi AndoMamoru Yamaguchi
    • Tetsuya TokunagaHiroyuki AraiTakeshi KimuraRyouichi AndoMamoru Yamaguchi
    • H03L7/00
    • H03K3/0231H03K2005/00084
    • A frequency adjustment circuit that maintains a target frequency even when frequency adjustment data of zapping circuit is changed by an external noise is offered. The frequency adjustment circuit includes a reset signal generation circuit, a frequency adjustment data latch circuit that latches and retains the frequency adjustment data ZP1 and ZP2 generated by a first zapping circuit and a second zapping circuit based on a latch clock ZCLK and a latch clock generation circuit that generates the latch clock ZCLK. The reset signal generation circuit generates a periodic reset signal ZRES that is synchronized with a rise of an enable signal EN generated from an interface circuit. The latch clock generation circuit generates the latch clock ZCLK that is synchronized with a fall of the enable signal EN.
    • 提供即使在由于外部噪声而使切换电路的频率调整数据变化的情况下也能够维持目标频率的频率调整电路。 频率调整电路包括复位信号生成电路,频率调整数据锁存电路,其锁存并保持由第一切换电路产生的频率调整数据ZP 1和ZP 2,以及基于锁存时钟ZCLK和锁存器的第二切换电路 时钟生成电路,生成锁存时钟ZCLK。 复位信号产生电路产生与从接口电路产生的使能信号EN的上升同步的周期性复位信号ZRES。 锁存时钟产生电路产生与使能信号EN的下降同步的锁存时钟ZCLK。