Preamble recognition and synchronization detection in partial-response systems.

摘要

This invention covers a method for fast and reliably detecting the reception of preambles in recording and communication systems using partial-response signaling. Each preamble, transmitted preceding user data, consists of a timing sequence followed by a known sequence of bits marking its end. The invention provides a method for fast and reliably recognizing that synchronization has been achieved and the timing sequence is being received, and detecting the end of the preamble. A hardware implementation based on the inventive method is also described. <IMAGE>