公开(公告)号：US06597485B1

公开(公告)日：2003-07-22

申请号：US09517621

申请日：2000-03-03

Applicant: Tadashi Ikeuchi ,  Tadao Inoue ,  Toru Matsuyama ,  Makoto Miki ,  Norio Ueno

Inventor： Tadashi Ikeuchi ,  Tadao Inoue ,  Toru Matsuyama ,  Makoto Miki ,  Norio Ueno

IPC: H04B1004

CPC classification number: H04B10/504 ,  H04B10/564

Abstract: 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.

Abstract translation: 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。