Method for improving the robustness of synchronization system in the Hard Disk Drive through a minimum latency loop

The invention relates to a method and architecture for improving the robustness of a synchronization system through a minimum latency loop, for instance in the Hard Disk Drive applications, wherein synchronous detection processing is performed for timing recovering of a correct sampling phase and frequency and by a first acquisition step of the a known preamble signal pattern, for generating a timing periodic signal, followed by a second tracking step, for recovering phase, frequency and gain sampling errors of the synchronization signal including a header followed by an unknown data content. Advantageously, a feedback loop including a numeric preamble generator (NPG) is provided for obtaining a reduced latency in the acquisition phase; such a numeric preamble generator (NPG) stores preamble values for different phase offset.