| US 7,602,444 B2 | ||
| Synchronization signal detection circuit and method of digital television (DTV) receiver | ||
| Jong-hwan Cheon, Suwon-si (Korea, Republic of); and Hyun-bae Jeon, Seoul (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd., Suwon-Si (Korea, Republic of) | ||
| Filed on Oct. 12, 2005, as Appl. No. 11/248,861. | ||
| Claims priority of application No. 10-2004-0081350 (KR), filed on Oct. 12, 2004. | ||
| Prior Publication US 2006/0078072 A1, Apr. 13, 2006 | ||
| Int. Cl. H04N 5/04 (2006.01); H04N 5/06 (2006.01); H04N 5/44 (2006.01) | ||
| U.S. Cl. 348—500 [348/521; 348/725] | 45 Claims |
| 1. A synchronization signal detection apparatus comprising: A synchronization signal detector configured to receive an input
signal that includes a synchronization sequence, the apparatus comprising:
a first power calculator that outputs a first power signal based on the received input signal;
a main path detector that selects the main path signal in the received input signal, wherein the main path detector includes:
a first multipath distortion filter configured to filter the first calculated power signal and to output a first filtered
power signal; and
a main path determination unit that selects a main path position based on the filtered first calculated power signal.
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