发明名称 |
Detection and correction of asymmetric transient signals |
摘要 |
The invention relates to a method and apparatus for detecting asymmetry in transient signals and to a method and apparatus for correcting such asymmetry. In the apparatus for detecting asymmetry there is provided a pre-shoot filter (1) for receiving an input signal Yin and asymmetrically filtering it utilizing a first set of filter coefficients to provide a first output in which substantially only pre-shoots of input transient signals are present, an after-shoot filter (2) for receiving the input signal and symmetrically filtering it utilizing a second set of filter coefficients to provide a second output in which substantially only after-shoots of input transient signals are present, and summing and comparison means (3 to 11) for summing the first outputs over a predetermined time interval, summing the second outputs over the predetermined time interval, and comparing first and second summed outputs to give an output signal indicating whether pre-shoots or after-shoots predominate over the predetermined time interval.
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申请公布号 |
US2002118303(A1) |
申请公布日期 |
2002.08.29 |
申请号 |
US20010014193 |
申请日期 |
2001.11.13 |
申请人 |
NIEUWENHUIZEN MICHEL WOUTER |
发明人 |
NIEUWENHUIZEN MICHEL WOUTER |
分类号 |
H03H17/02;H04N5/208;(IPC1-7):H04N5/21;H04N5/213 |
主分类号 |
H03H17/02 |
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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