The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 2010
Filed:
May. 12, 2005
Ho-min Eum, Daejeon, KR;
Yong-tae Lee, Daejeon, KR;
Seung-won Kim, Daejeon, KR;
Heung-mook Kim, Daejeon, KR;
Jae-hyun Seo, Daejeon, KR;
Sung-ik Park, Daejeon, KR;
Soo-in Lee, Daejeon, KR;
Ho-Min Eum, Daejeon, KR;
Yong-Tae Lee, Daejeon, KR;
Seung-Won Kim, Daejeon, KR;
Heung-Mook Kim, Daejeon, KR;
Jae-Hyun Seo, Daejeon, KR;
Sung-Ik Park, Daejeon, KR;
Soo-In Lee, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided is a frequency synchronizing apparatus and method that can synchronize frequencies between receiving signals and transmitting signals by extracting a carrier error and sampling timing error information in a synchronization process of the receiving signal from a main transmitter or another repeater and reflecting them in the transmitting signal in an on-channel repeater. The apparatus includes a carrier recovery means for compensating a carrier frequency error of a receiving signal; a timing recovery means for compensating a sampling timing error of the receiving signal; a carrier error reflecting means for reflecting the carrier frequency error extracted from the carrier recovery means to a transmitting signal; and a timing error reflecting means for reflecting the sampling timing error extracted from the timing recovery means to the transmitting signal. The present invention is used to form an on-channel repeating network in any transmission system including a digital television broadcasting system.