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1. 发明授权

US4006304A Apparatus for word synchronization in an optical communication system 失效
标题翻译：光通信系统中字同步的装置
公开(公告)号：US4006304A
公开(公告)日：1977-02-01
申请号：US639374
申请日：1975-12-10
申请人： Darrell Dean Sell
发明人： Darrell Dean Sell
IPC分类号： H03M5/16 , H03K5/00 , H04L1/24 , H04L7/00 , H04L7/027 , H04L7/04 , H04L25/49
CPC分类号： H04L1/247 , H04L7/04 , H04L7/027
摘要： An optical communication system is disclosed in which a bipolar signal of the type transmitted in digital transmission systems is converted into a unipolar binary signal for transmission over an optical transmission medium. The three levels of the bipolar signal are converted into three pairs of bits in the binary signal. One pair of bits is not utilized in the conversion and is therefore labeled as a forbidden word. Synchronization is achieved at the receiving location for the purpose of decoding by detecting the presence of the forbidden word in the binary signal and in response to this detection an energizing pulse is produced. This energizing pulse drives a clock circuit which in turn drives a decoding apparatus utilized to translate the binary signal back into the bipolar signal. As a result of this type of word synchronization, individual errors introduced into the binary signal do not result in a framing error.
摘要翻译：公开了一种光通信系统，其中在数字传输系统中传输的类型的双极信号被转换成用于在光传输介质上传输的单极二进制信号。双极信号的三个电平在二进制信号中被转换成三对位。转换中没有使用一对位，因此被标记为禁止字。为了通过检测二进制信号中的禁止字的存在而在接收位置实现同步，并且响应于该检测，产生通电脉冲。该激励脉冲驱动时钟电路，该时钟电路又驱动用于将二进制信号转换回双极性信号的解码装置。作为这种类型的字同步的结果，引入二进制信号的各个错误不会导致成帧错误。

2. 发明授权

US4019048A Regenerator for an optical transmission system 失效
标题翻译：光传输系统用再生器
公开(公告)号：US4019048A
公开(公告)日：1977-04-19
申请号：US668851
申请日：1976-03-22
申请人： Theodore Lincoln Maione , Frederick Enyeart Radcliffe , Darrell Dean Sell , Dan Holden Wolaver
发明人： Theodore Lincoln Maione , Frederick Enyeart Radcliffe , Darrell Dean Sell , Dan Holden Wolaver
IPC分类号： H04B10/00 , H04B10/04 , H04B10/06 , H04B10/14 , H04B10/16 , H04L25/02 , H04L25/52 , H04B9/00
CPC分类号： H04B10/29
摘要： An optical pulse stream regenerator includes an optical receiver, a decision and timing circuit, and an optical transmitter. In response to an incident optical data pulse stream, a variable gain receiver section produces an electrical data pulse stream representing the incident optical data pulse stream. The receiver section is stabilized by having different variable gain devices respond to separate ranges of an automatic gain control signal. In response to the receiver section electrical data pulse stream, a phase-lock frequency-lock circuit in the timing circuit recovers a clock pulse stream that is synchronized with the incident optical data pulse stream, and the decision circuit regenerates an electrical data pulse stream representing the incident optical data pulse stream. In the transmitter section, an injection laser is controlled by the regenerated electrical data pulse stream and by a prebias signal that is established in response to the difference between a signal representing the optical output power of the laser and a signal representing the regenerated electrical data pulse stream. The injection laser regenerates an output optical data pulse stream representing the incident optical data pulse stream.
摘要翻译：光脉冲流再生器包括光接收器，判决和定时电路以及光发射器。响应于入射光数据脉冲流，可变增益接收器部分产生表示入射光数据脉冲流的电数据脉冲流。通过使不同的可变增益器件响应于自动增益控制信号的单独范围来使接收器部分稳定。响应于接收器部分电数据脉冲流，定时电路中的锁相频率锁定电路恢复与入射光数据脉冲流同步的时钟脉冲流，并且判定电路再生表示入射光数据脉冲流。在发射器部分中，注入激光器由再生的电数据脉冲流以及响应于表示激光器的光输出功率的信号和表示再生的电数据脉冲的信号之间的差建立的预偏置信号来控制流。注入激光器再生表示入射光学数据脉冲流的输出光学数据脉冲流。

3. 发明授权

US4009385A Laser control circuit 失效
标题翻译：激光控制电路
公开(公告)号：US4009385A
公开(公告)日：1977-02-22
申请号：US668824
申请日：1976-03-22
申请人： Darrell Dean Sell
发明人： Darrell Dean Sell
IPC分类号： H01S3/10 , H01S5/068 , H01S5/0683 , H04B10/155 , H04B10/16 , H04B9/00
CPC分类号： H04B10/504 , H01S5/0683 , H04B10/29
摘要： A control circuit for an injection laser includes a driver circuit which applies a driving current to the laser in response to an electrical modulating signal. A prebias circuit applies a prebias current to the laser in response to the difference between a signal derived from the electrical modulating signal and a signal derived from the laser light output.
摘要翻译：用于注射激光器的控制电路包括驱动电路，其响应于电调制信号向激光器施加驱动电流。预偏置电路响应于从电调制信号得到的信号与从激光输出得到的信号之间的差异，将激光电流施加到激光器。

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