Transmitter Timing Circuit for Asynchronous Communication

The patent applies dynamics by transitioning from constant symbol transmission periods to variable symbol transmission periods. The symbol transmission period is dynamically adjusted based on the position within a frame structure, increasing progressively during the frame. This dynamic adaptation allows the system to tolerate oscillator frequency drift without requiring frequent re-synchronizations, as the varying periods create a unique pattern that can be detected and used to maintain synchronization throughout the frame.

The patent implements preliminary action by establishing synchronization at the beginning of each frame using a synchronization signal. Once synchronized, the variable symbol transmission period pattern is maintained throughout the entire frame without requiring intermediate re-synchronizations. This preliminary synchronization action, combined with the distinctive varying period pattern, allows the receiver to maintain synchronization for the duration of the frame, thereby improving communication efficiency by eliminating frequent re-synchronization interruptions.

The patent applies parameter changes by modifying the symbol transmission period parameter within a frame structure. Instead of using frequency-modulated oscillators that would change the oscillator frequency, the patent varies the symbol transmission period according to a predefined pattern (e.g., increasing linearly or exponentially within a frame). This parameter change achieves spectrum spreading and reduces electromagnetic emission at any single frequency while maintaining simpler oscillator hardware, thus resolving the contradiction between reducing harmful emissions and maintaining device simplicity.