发明名称 |
Method and apparatus for measuring pulse widths of a side-band signal |
摘要 |
Example embodiments are directed to an apparatus and method for measuring a pulse width. A side-band signal generator may be configured to receive a given data pattern and output a side-band signal by modulating a pulse width of the received data pattern in a test mode. A phase detector may be configured to receive the side-band signal and a reference clock signal, and output a pulse signal corresponding to a phase difference between the received side-band signal and the reference clock signal. A charge pump may be configured to receive the pulse signal and output an output voltage by increasing or decreasing the output voltage based on the pulse signal. A pulse width measurer may be configured to receive the output voltage of the charge pump and determine whether pulses forming the side-band signal have appropriate widths based on whether the output voltage is included in a desired reference voltage range.
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申请公布号 |
US7656147(B2) |
申请公布日期 |
2010.02.02 |
申请号 |
US20070976922 |
申请日期 |
2007.10.30 |
申请人 |
SAMSUNG ELECTRONIC CO., LTD. |
发明人 |
KIM HYUNG-SEUK;KIM JAE-KWAN |
分类号 |
G01R25/00;H03K7/08;H03L7/06 |
主分类号 |
G01R25/00 |
代理机构 |
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