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    • 5. 发明授权
    • Burst mode optical transmitter circuit
    • 突发模式光发射机电路
    • US06282216B1
    • 2001-08-28
    • US09471370
    • 1999-12-23
    • Tadashi IkeuchiTadao InoueToru MatsuyamaToshiyuki TakaujiNorio Ueno
    • Tadashi IkeuchiTadao InoueToru MatsuyamaToshiyuki TakaujiNorio Ueno
    • H01S313
    • H04B10/564H04B10/504
    • A burst mode optical transmitter circuit comprises a semiconductor laser, a photodiode for monitoring the light output from the semiconductor laser, a current-voltage converting circuit for converting the current detected by the photodiode into a voltage, an APC amplifier, a holding circuit for holding, as a current control signal, the output signal from the APC amplifier, a driving circuit for supplying a driving current to the semiconductor laser according the current control signal from the holding circuit and the the data input in the burst mode, and a data interruption detecting circuit for detecting an interrupt period of the data input to the driving circuit to reset the holding circuit, in which the current control signal held in the hold circuit is reset by the reset signal, whereby a stable burst optical transmission can be performed stably with a simple construction.
    • 突发模式光发射机电路包括半导体激光器,用于监测来自半导体激光器的光输出的光电二极管,用于将由光电二极管检测的电流转换为电压的电流 - 电压转换电路,APC放大器,用于保持的保持电路 作为电流控制信号,来自APC放大器的输出信号,用于根据来自保持电路的电流控制信号和在突发模式中输入的数据向半导体激光器提供驱动电流的驱动电路和数据中断 检测电路,用于检测输入到驱动电路的数据的中断周期以复位保持电路,其中保持在保持电路中的电流控制信号由复位信号复位,从而可以稳定地执行稳定的突发光传输, 一个简单的施工。
    • 6. 发明授权
    • Optical transmitter circuit
    • 光发射机电路
    • US06597485B1
    • 2003-07-22
    • US09517621
    • 2000-03-03
    • Tadashi IkeuchiTadao InoueToru MatsuyamaMakoto MikiNorio Ueno
    • Tadashi IkeuchiTadao InoueToru MatsuyamaMakoto MikiNorio Ueno
    • H04B1004
    • H04B10/504H04B10/564
    • An optical transmitter circuit including a light receiving element, such as a photodiode, which monitors the optical output of a light emitting element such as a semiconductor laser. A current-voltage converting circuit supplies a drive current from a drive circuit to the light emitting element and converts the output voltage of the light receiving element into voltage. An APC amplifier compares the converted output signals and a reference signal, and a hold circuit holds the output signal of the APC amplifier and uses the output signal as a current control signal of the drive circuit. A “1” continuous signal detecting circuit detects the continuation of “1” in a specified number of bits in the input data (DATA) and updates the hold value in the hold circuit.
    • 一种包括诸如光电二极管的光接收元件的光发送器电路,其监测诸如半导体激光器的发光元件的光输出。 电流电压转换电路将来自驱动电路的驱动电流提供给发光元件,并将光接收元件的输出电压转换为电压。 APC放大器将转换的输出信号和参考信号进行比较,保持电路保持APC放大器的输出信号,并使用输出信号作为驱动电路的电流控制信号。 “1”连续信号检测电路检测输入数据(DATA)中指定位数的“1”继续,并更新保持电路中的保持值。
    • 7. 发明授权
    • Interface circuit adaptive to high speed and low voltage operation
    • 接口电路适应于高速和低电压工作
    • US5512853A
    • 1996-04-30
    • US320068
    • 1994-10-07
    • Norio UenoToru Matsuyama
    • Norio UenoToru Matsuyama
    • G06F15/78H03K19/0175H03K19/0185H03L5/00H01L25/00H03B1/00H03K17/16
    • H03K19/018514
    • An interface circuit for interfacing between an integrated circuit (IC) on a transmitting side and an IC on a receiving side over a line on a printed circuit board comprises an output circuit implemented in the IC on the transmitting side and composed of a current source for supplying a given current and a switching circuit for cutting off the given current according to a binary signal and delivering the given current as a current signal to the line, and an input circuit implemented in the IC on the receiving side and composed of a transimpedance circuit whose input impedance is equal to the one of the line and which converts the current signal into a voltage signal, and a comparator for identifying the voltage signal relative to a given threshold voltage and reproducing the binary signal. This circuitry makes it possible to provide an interface circuit that can be implemented in a CMOS IC during CMOS processing and operated at a low voltage. A threshold voltage for use in identifying a signal on the receiving side is stabilized, thus realizing an interface circuit unsusceptible to influence of a change in CMOS processing or the like.
    • 用于在发送侧的集成电路(IC)和印刷电路板上的线路上的接收侧的IC之间进行接口的接口电路包括在发送侧的IC中实现的输出电路,并且由电流源 提供给定的电流和切换电路,用于根据二进制信号切断给定的电流,并将给定的电流作为电流信号传送到线路,以及在接收侧的IC中实现并由跨阻电路 其输入阻抗等于线路中的一个,并将电流信号转换为电压信号;以及比较器,用于识别相对于给定阈值电压的电压信号并再现二进制信号。 该电路使得可以提供在CMOS处理期间可以在CMOS IC中实现并在低电压下操作的接口电路。 用于识别接收侧的信号的阈值电压是稳定的,因此实现了不能影响CMOS处理等的改变的接口电路。