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1. 发明授权

US5543953A Servo control mechanism with wide input dynamic range and fast response 失效
标题翻译：伺服控制机构，输入动态范围宽，响应速度快
公开(公告)号：US5543953A
公开(公告)日：1996-08-06
申请号：US305126
申请日：1994-09-13
申请人： Kumar N. Sivarajan , David G. Steinberg
发明人： Kumar N. Sivarajan , David G. Steinberg
IPC分类号： H04B10/158 , H04B10/06
CPC分类号： H04B10/67 , H04B10/675
摘要： A servo control loop for tuning a center frequency of a tuning device to a desired frequency. More specifically, the dynamic range and response time of the servo loop are improved by closing the loop when the sign of the dither signal is such that the center frequency of filter would move towards the desired frequency when the loop is closed and by shifting the phase of the residual dither so that it adds at least partially in phase with the dither signal. The two components thus added are used to supply the control signal for the tuning device.
摘要翻译：用于将调谐装置的中心频率调谐到所需频率的伺服控制回路。更具体地，当抖动信号的符号使得当环路闭合时滤波器的中心频率朝向期望频率移动并且通过使相位移动，通过闭合环路来改善伺服环路的动态范围和响应时间的残余抖动，使得其至少部分地与抖动信号相加。这样添加的两个部件用于为调谐装置提供控制信号。

2. 发明授权

US5253274A Means to differentiate between commands and data on a communications link 失效
标题翻译：用于区分通信链路上的命令和数据的方式
公开(公告)号：US5253274A
公开(公告)日：1993-10-12
申请号：US869557
申请日：1992-04-15
申请人： Frank J. Janniello , Rajiv Ramaswami , David G. Steinberg
发明人： Frank J. Janniello , Rajiv Ramaswami , David G. Steinberg
IPC分类号： H04L25/49 , H04L29/06 , H04B25/49
CPC分类号： H04L25/4906 , H04L29/06
摘要： A method of transmitting data and commands on a communication link so as to efficiently distinguish between commands and data. This invention encodes information symbols before transmission on the communication link. A unique code symbol S which does not equal any encoded information symbol is defined along with a unique encoded command symbol ESOTX. Encoded data information symbols are transmitted by sending S followed by ESOTX, and then the encoded data information symbols. Encoded command information symbols, not including ESOTX, are transmitted by sending S immediately followed by the encoded command information symbols. The receiver interprets any encoded information symbol immediately following S as a command. If the encoded command equals ESOTX, the following symbols are treated as data until S is received again. If the encoded command is not ESOTX, the following symbols are treated as commands until S is received again.
摘要翻译：一种在通信链路上发送数据和命令的方法，以便有效区分命令和数据。本发明在通信链路上传输之前对信息符号进行编码。与唯一的编码命令符号ESOTX一起定义不等于任何编码信息符号的唯一代码符号S. 编码的数据信息符号通过发送S发送，随后是ESOTX，然后是编码的数据信息符号。编码命令信息符号（不包括ESOTX）通过立即发送S后跟编码命令信息符号来发送。接收者解释紧随S之后的任何编码信息符号作为命令。如果编码命令等于ESOTX，则将以下符号视为数据，直到再次接收到S。如果编码命令不是ESOTX，则以下符号被视为命令，直到再次接收到S。

3. 发明授权

US5233453A Space-division switched waveguide array filter and method using same 失效
标题翻译：空分开关波导阵列滤波器及其使用方法
公开(公告)号：US5233453A
公开(公告)日：1993-08-03
申请号：US875493
申请日：1992-04-29
申请人： Kumar N. Sivarajan , David G. Steinberg , Franklin F. Tong
发明人： Kumar N. Sivarajan , David G. Steinberg , Franklin F. Tong
IPC分类号： G02B6/32 , G02B6/34 , G02F1/225 , G02F1/313 , H04Q11/00
CPC分类号： G02B6/12007 , G02B6/29358 , G02B6/29395 , G02B6/32 , G02B6/4246 , G02F1/225 , G02F1/313 , H04Q11/0005 , G02F2202/102 , G02F2203/055 , H04Q2011/0009 , H04Q2011/0052
摘要： This invention discloses a method and apparatus for providing high speed optical tuning. With this invention, light is spatially routed through a tree of optical switches interconnected by waveguides to a selected fixed tuned optical filter in an array of such filters. Each of the optical switches can be controlled by a binary signal thereby permitting digitally controlled optical filtering.

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