Encoder/decoder system for a rapidly synchronizable binary code Patent

Design and development of encoder/decoder system to generate binary code which is function of outputs of plurality of bistable element

Simple quasi-exponential slope generator

Circuitry for digitally generating an exponentially decaying wave function permits discrete values to be sampled from the exponential waveform for comparison with a binary number of specified accuracy. This exponential-decay generator employs a simple binary counter to count in the sequence of exponential decay

Rapid sync acquisition system Patent

System designed to reduce time required for obtaining synchronization in data communication with spacecraft utilizing pseudonoise code

Technique minimizes the effects of dropouts on telemetry records

Recorder deficiencies are minimized by using two-channel system to prepare two tapes, each having noise, wow and flutter, and dropout characteristics of channel on which it was made. Processing tapes by computer and combining signals from two channels produce single tape free of dropouts caused by recording process

Digital filter for reducing sampling jitter in digital control systems Patent

Digital filter for reducing jitter in digital control system

Design for a Rapid Automatic Sync Acquisition System

System provides rapid command sync acquisition between widely separated transmitter-receivers. It is based on a rapid, automatic range-adjustment approach rather than the time-consuming cycle slipping or stepping techniques of conventional phase-locked loops

A method for reducing sampling jitter in digital control systems

Digital phase lock loop system is designed by smoothing the proportional control with a low pass filter. This method does not significantly affect the loop dynamics when the smoothing filter bandwidth is wide compared to loop bandwidth

Synchronizer for random binary data

Simplified binary-data transition detector, for synchronization of relatively noise-free signals, can be used with radio or cable data-control links. It permits reception of binary data in absence of clock signal or self-clocking coder

Digital data transition tracking loop improves data reception

Transition tracking loop eliminates drifts, leakages, and instabilities inherent in analog filters. Major components are the phase detector, loop filter, voltage-controlled oscillator and timing logic

Error correcting method and apparatus Patent

Description of error correcting methods for use with digital data computers and apparatus for encoding and decoding digital dat