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公开(公告)号：US06867720B1
公开(公告)日：2005-03-15
申请号：US10649209
申请日：2003-08-27
申请人： Steven R. Freeman , Matthew O'Donnell , Thomas E. Linnenbrink , Marc A. Morin , Marshall K. Quick , Charles S. Desilets
发明人： Steven R. Freeman , Matthew O'Donnell , Thomas E. Linnenbrink , Marc A. Morin , Marshall K. Quick , Charles S. Desilets
CPC分类号： G01S7/52034 , G01S7/52028 , G01S7/52044 , G01S7/5208 , G01S7/52095 , G01S15/8927 , H03M3/324 , H03M3/43 , H03M3/454
摘要： A method and apparatus are provided for reducing distortion in a dynamically delayed digital sample stream of an imaging system. The method includes the steps of delta-sigma modulating an input analog signal of the imaging system at a frequency above the Nyquist frequency of the input analog signal to generate a digital sample stream and changing a length of the sample stream to delay a portion of the sample stream while maintaining synchronism between a delta-sigma modulator and a demodulator of the system.
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公开(公告)号：US06208189B1
公开(公告)日：2001-03-27
申请号：US09358039
申请日：1999-07-20
申请人： Steven R. Freeman , Matthew O'Donnell , Thomas E. Linnenbrink , Marc A. Morin , Marshall K. Quick , Charles S. Desilets
发明人： Steven R. Freeman , Matthew O'Donnell , Thomas E. Linnenbrink , Marc A. Morin , Marshall K. Quick , Charles S. Desilets
IPC分类号： H03H1126
CPC分类号： G01S7/5208 , G01S7/52028 , G01S7/52034 , G01S7/52095 , G01S15/8927 , H03M3/324 , H03M3/43 , H03M3/454 , H03M3/504
摘要： A method and apparatus are provided for reducing distortion in a dynamically delayed digital sample stream of an imaging system. The method includes the steps of delta-sigma modulating an input analog signal of the imaging system at a frequency above the Nyquist frequency of the input analog signal to generate a digital sample stream and changing a length of the sample stream to delay a portion of the sample stream while maintaining synchronism between a delta-sigma modulator and a demodulator of the system.
摘要翻译： 提供了一种用于减少成像系统的动态延迟的数字样本流中的失真的方法和装置。 该方法包括以高于输入模拟信号的奈奎斯特频率的频率调制成像系统的输入模拟信号的Δ-sigma步骤，以产生数字样本流并改变样本流的长度以延迟部分 同时保持Δ-Σ调制器和系统的解调器之间的同步。
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公开(公告)号：US06987474B2
公开(公告)日：2006-01-17
申请号：US10973235
申请日：2004-10-26
申请人： Steven R. Freeman , Matthew O'Donnell , Thomas E. Linnenbrink , Marc A. Morin , Marshall K. Quick , Charles S. Desilets
发明人： Steven R. Freeman , Matthew O'Donnell , Thomas E. Linnenbrink , Marc A. Morin , Marshall K. Quick , Charles S. Desilets
IPC分类号： H03M3/00
CPC分类号： G01S7/52034 , G01S7/52028 , G01S7/52044 , G01S7/5208 , G01S7/52095 , G01S15/8927 , H03M3/324 , H03M3/43 , H03M3/454
摘要： A method and apparatus are provided for reducing distortion in a dynamically delayed digital sample stream of an imaging system. The method includes the steps of delta-sigma modulating an input analog signal of the imaging system at a frequency above the Nyquist frequency of the input analog signal to generate a digital sample stream and changing a length of the sample stream to delay a portion of the sample stream while maintaining synchronism between a delta-sigma modulator and a demodulator of the system.
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公开(公告)号：US06801148B2
公开(公告)日：2004-10-05
申请号：US09760531
申请日：2001-01-16
申请人： Steven R. Freeman , Matthew O'Donnell , Thomas E. Linnenbrink , Marc A. Morin , Marshall K. Quick , Charles S. Desilets
发明人： Steven R. Freeman , Matthew O'Donnell , Thomas E. Linnenbrink , Marc A. Morin , Marshall K. Quick , Charles S. Desilets
IPC分类号： H03M300
CPC分类号： G01S7/5208 , G01S7/52028 , G01S7/52034 , G01S7/52095 , G01S15/8927 , H03M3/324 , H03M3/43 , H03M3/454 , H03M3/504
摘要： A method and apparatus are provided for reducing distortion in a dynamically delayed digital sample stream of an imaging system. The method includes the steps of delta-sigma modulating an input analog signal of the imaging system at a frequency above the Nyquist frequency of the input analog signal to generate a digital sample stream and changing a length of the sample stream to delay a portion of the sample stream while maintaining synchronism between a delta-sigma modulator and a demodulator of the system.
摘要翻译： 提供了一种用于减少成像系统的动态延迟的数字样本流中的失真的方法和装置。 该方法包括以高于输入模拟信号的奈奎斯特频率的频率调制成像系统的输入模拟信号的Δ-sigma步骤，以产生数字样本流并改变样本流的长度以延迟部分 同时保持Δ-Σ调制器和系统的解调器之间的同步。
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公开(公告)号：US5964708A
公开(公告)日：1999-10-12
申请号：US944226
申请日：1997-10-06
申请人： Steven R. Freeman , Matthew O'Donnell , Thomas E. Linnenbrink , Marc A. Morin , Marshall K. Quick , Charles S. Desilets
发明人： Steven R. Freeman , Matthew O'Donnell , Thomas E. Linnenbrink , Marc A. Morin , Marshall K. Quick , Charles S. Desilets
CPC分类号： G01S7/5208 , G01S15/8927 , G01S7/52028 , G01S7/52095 , H03M3/324 , G01S7/52034 , H03M3/43 , H03M3/454 , H03M3/504
摘要： A method and apparatus are provided for reducing distortion in a dynamically delayed digital sample stream of an imaging system. The method includes the steps of delta-sigma modulating an input analog signal of the imaging system at a frequency above the Nyquist frequency of the input analog signal to generate a digital sample stream and changing a length of the sample stream to delay a portion of the sample stream while maintaining synchronism between a delta-sigma modulator and a demodulator of the system.
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