Analysis of Synchronizing Systems for Dot-Interlaced Color Television

摘要: A mathematical analysis is made of two synchronizing systems which might be used in "dot" color television to synchronize the dotting or sampling frequency receiver. Synchronizing information transmitted bursts carrier cohered phase approximately 3 Mc during line fly-back time. The analyzed are (1) a simple high-Q resonant filter and (2) an oscillator with automatic control (afc). In order maintain sufficient accuracy frequency, crystal at transmitter necessary. Since variations response particular time may essentially negligible, problem resolves itself into calculating parameters system keep below acceptable value random error due noise together caused by (static error) from crystal. Rather than attempt minimize sum static errors, have been dealt separately because their different character. fundamental parameter calculations power carrier-to-noise ratio intermediate being measured sync tips. Calculations for values this 1, 3, 5, considered critical range. Results calculation show that when alone fixed, afc single constant suffer same error.