发明名称 |
Apparatus and method for detecting synchronizing signal of digital TV |
摘要 |
An apparatus and method for detecting a synchronizing signal in a digital TV receiver which adopts a VSB mode is disclosed. The apparatus includes a correlation unit for obtaining a correlation value between a received signal for each unit of symbols and a preset reference field synchronizing signal, a maximum value detector for detecting a location of the symbol having a maximum correlation value while performing counting operation for a unit of a variable constant added to the number of symbols corresponding to one field, a synchronizing lock signal generator for generating a synchronizing lock signal by testing reliability of the symbol location detected by the maximum value detector, and a synchronizing location controller for calculating a relative location of the symbol location having a maximum value to generate a corresponding synchronizing signal if the synchronizing lock signal is generated by the synchronizing lock signal generator. A synchronizing pattern is traced per field in even case that channel characteristic is seriously varied. Thus, the synchronizing signals are stably restored at high speed.
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申请公布号 |
US2001007476(A1) |
申请公布日期 |
2001.07.12 |
申请号 |
US20010758422 |
申请日期 |
2001.01.12 |
申请人 |
HONG SUNG RYONG;GU YOUNG MO |
发明人 |
HONG SUNG RYONG;GU YOUNG MO |
分类号 |
H04N5/44;H04N5/08;H04N5/455;H04N7/52;H04N7/56;(IPC1-7):H04N5/04;H04N9/44;H04N9/475 |
主分类号 |
H04N5/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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