TIMING RECOVERY CIRCUIT OF DIGITAL TELEVISION RECEIVING SYSTEM

摘要

Purpose: a timing recovery circuit of a digital TV receiving system passes through one timing jitter of tracking and corrects a timing error and is arranged to restore accurately timing. Construction: a timing recovery circuit of a digital TV receiving system includes an analog/digital conversion section point (42), a segment sync detection portion (44), a forced synchronism detection portion (46), a figure tracking control section (48) and a digital phase control part (50). The base-band data signal for making base-band analog signal complication complicate it to one that analog/digital conversion section point is received one. Segment sync detection portion detects a segment sync signal from the base-band data signal for complicating it. Figure tracking part receives the data-signal after restoring and detects a tracking error. Digital phase control part generates a sampled signal, a phase of the segment sync signal for being used to arrive by the tracking error trace detection that reflection detects.