Patent ID: 6614490
Filing Date: 2003-09-02
Classification: H03L,H04L,H04N

Abstract:
A digital television (TV) receiver for recovering received data by producing the same segment sync signal and clock as those inserted when the data is transmitted using an input I-channel signal, the digital TV receiver comprising:a filtering section for extracting a Q-channel signal whose phase is inverted by 90Â° from the input I-channel signal; a segment sync detection section for obtaining a correlation value between the input I-channel signal and a preset segment sync signal form and a correlation value between the input Q-channel signal and the preset segment sync signal form, and adding and integrating for a predetermined time the two correlation values, the segment sync detection section judging a segment sync section by searching a peak value of integrated values, and outputting a control signal for informing recovery of the segment sync signal; and a timing recovery section for operating in accordance with the control signal provided from the segment sync detection section, and performing a timing recovery by extracting timing error information from the I-channel signal and the Q-channel signal.