Method and apparatus for interpolating peak detection of...

Dynamic magnetic information storage or retrieval – General processing of a digital signal

Reexamination Certificate

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C360S077120

Reexamination Certificate

active

07729070

ABSTRACT:
A method and device for detecting a peak which is substantially the same as the actual peak are disclosed. In one embodiment, the device includes a filter, a shift register, a controller and a digital interpolator. The filter is configured to receive a plurality of signal samples and the shift register, which is coupled with the filter, has multiple registers. The shift register is configured to receive the plurality of signal samples and to shift the plurality of signal samples through the registers. The controller is coupled with the shifter register and is configured to detect a zero-crossing event in the signal samples. The digital interpolator is coupled with the controller and configured to perform a binary search to identify a peak substantially the same as the actual peak.

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Oppenheim et al., “Discrete-Time Signal Processing”, Prentice-Hall, 1989, pp. 679-683.
Gardner, “Interpolation in Digital Modems- Part I: Fundamentals”, IEEE Transactions on Communications, vol. 41, No. 3, Mar. 1993, pp. 501-507.
Erup et al., “Interpolation in Digital Modems- Part II: Implementation and Performance”, IEEE Transactions on Communications, vol. 41, No. 6, Jun. 1993, pp. 998-1008.

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