发明名称 |
Frequency error detection apparatus and method based on histogram information on input signals |
摘要 |
A frequency error detection apparatus and method based on histogram information of an input signal. The apparatus includes an A/D converter for and converting an analog signal into digital values; a zero crossing point detector for detecting sign changes of the digital values, and detecting zero crossing points; a period information detector for detecting period information which is the number of the digital values corresponding to a periodic signal; a histogram information calculator for counting the number of detections for the respective period information based on the period information, and calculating error-detection-target histogram information; and a frequency error calculator for detecting a difference between the error-detection-target histogram information and a reference histogram information, and calculating a frequency error value based on the difference. This can shorten time for frequency error detections and improve accuracy of the detected frequency error value.
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申请公布号 |
US7043383(B2) |
申请公布日期 |
2006.05.09 |
申请号 |
US20040799890 |
申请日期 |
2004.03.15 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
LEE JAE-WOOK;LEE JUNG-HYUN |
分类号 |
G01R23/00;G11B20/14;H03L7/091;H03M1/10;H03M13/00 |
主分类号 |
G01R23/00 |
代理机构 |
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代理人 |
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