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    • 2. 发明授权
    • Data communication apparatus, data communication system, and data communication method
    • 数据通信装置,数据通信系统和数据通信方法
    • US08638894B2
    • 2014-01-28
    • US12524479
    • 2008-02-19
    • Yoshikazu Yamazaki
    • Yoshikazu Yamazaki
    • H04L7/02
    • H04L25/493H03K5/1534H04L5/14H04L25/0264H04L25/028
    • An object of the present invention is to provide a data communication technique which can reduce a size of a system by enabling bidirectional data communication, and enables a cheap system configuration. A data communication apparatus is provided, the data communication apparatus including a signal terminal (IN) for inputting receiving signals of pulses of which rise times or fall times are mutually different, a reference voltage terminal (GND) for inputting a reference voltage, a rise detection circuit (11) for detecting a rise or a rise time of the receiving signal, a fall detection circuit (12) for detecting a fall or a fall time of the receiving signal, a data signal conversion circuit (13) for generating a clock signal or a data signal based on a result of a detection by the rise detection circuit or the fall detection circuit, and an internal circuit (14) for inputting the clock signal or the data signal generated by the data signal conversion circuit, and for outputting a transmission signal to the signal terminal.
    • 本发明的目的是提供一种数据通信技术,其可以通过实现双向数据通信来减小系统的大小,并且能够实现便宜的系统配置。 提供一种数据通信装置,该数据通信装置包括用于输入上升时间或下降时间的脉冲的接收信号相互不同的信号端子(IN),用于输入参考电压的参考电压端子(GND),上升 用于检测接收信号的上升或上升时间的检测电路(11),用于检测接收信号的下降或下降时间的下降检测电路(12),用于产生时钟的数据信号转换电路(13) 基于上升检测电路或下降检测电路的检测结果的信号或数据信号,以及用于输入由数据信号转换电路产生的时钟信号或数据信号的内部电路(14),并输出 传输信号到信号端。
    • 6. 发明申请
    • BUFFER CIRCUIT
    • 缓冲电路
    • US20080094126A1
    • 2008-04-24
    • US11866404
    • 2007-10-02
    • Yoshikazu Yamazaki
    • Yoshikazu Yamazaki
    • G05F3/02
    • H03K17/04206H03K17/042H03K17/6874H03K2217/0036
    • The present invention provides a buffer circuit meeting both of low power consumption requirement and an improvement in slew rate characteristics which are in a relation of trade off. Voltage difference detection circuits are provided for detecting a voltage difference between the input signal at rising and at trailing and an output signal. Based on the voltage difference, voltage-current conversion circuits increase a bias current to be supplied to an output NMOS transistor m1 and a source terminal of an output PMOS transistor constituting an output circuit. And, the voltage difference detection circuits have offset voltages. Only when the voltage difference changes into a level higher than the offset voltage, that is, when the input signal changes abruptly (rise or down), bias current increases.
    • 本发明提供了一种满足低功耗需求的缓冲电路和具有折衷关系的压摆率特性的改进。 提供电压差检测电路,用于检测上升和下降的输入信号与输出信号之间的电压差。 基于电压差,电压 - 电流转换电路增加供给到输出NMOS晶体管m 1的偏置电流和构成输出电路的输出PMOS晶体管的源极端子。 并且,电压差检测电路具有偏移电压。 只有当电压差变为高于偏移电压的电平时,即当输入信号突然变化(上升或下降)时,偏置电流增加。
    • 7. 发明申请
    • DATA COMMUNICATION DEVICE, DATA COMMUNICATION SYSTEM, AND DATA COMMUNICATION METHOD
    • 数据通信设备,数据通信系统和数据通信方法
    • US20070288780A1
    • 2007-12-13
    • US11687233
    • 2007-03-16
    • Yoshikazu Yamazaki
    • Yoshikazu Yamazaki
    • G06F1/00
    • H03K19/003H03K7/08H04L25/08
    • A data communication device performs stable data communications without a malfunction in a system downsized by realizing bi-directional data communications using two terminals. The data communication device includes: a signal terminal (IN) for inputting a received signal having portions of different duty ratios and a constant pulse frequency; a reference voltage terminal (GND) for inputting a first reference voltage; a clock generation circuit for generating a clock signal according to the received signal; a data signal generation circuit for generating a data signal by identifying a duty ratio of the received signal; a transmission circuit for outputting a transmission signal to the signal terminal; and a regulator circuit for generating power supply voltages of the clock generation circuit, the data signal generation circuit, and the transmission circuit on a basis of an internally generated second reference voltage, the received signal, and the first reference voltage.
    • 数据通信设备通过实现使用两个终端的双向数据通信,在系统小型化的情况下执行稳定的数据通信而不发生故障。 数据通信装置包括:信号端子(IN),用于输入具有不同占空比的部分和恒定脉冲频率的接收信号; 用于输入第一参考电压的参考电压端子(GND); 时钟生成电路,用于根据接收信号产生时钟信号; 数据信号生成电路,用于通过识别接收信号的占空比来产生数据信号; 用于向信号端子输出发送信号的发送电路; 以及调节器电路,用于基于内部产生的第二参考电压,接收信号和第一参考电压来产生时钟产生电路,数据信号产生电路和传输电路的电源电压。