Correlation receiver for demodulating servo track information
First Claim
1. A method for detecting peaks of a correlation signal, the method comprising:
- determining whether an amplitude of a pulse of the correlation signal exceeds by at least a first delta an amplitude of a prior peak; and
if so, designating the pulse as a peak and setting an amplitude of the peak as the amplitude of the prior peak increased by a second delta.
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Accused Products
Abstract
A correlation receiver, among other functions, detects peaks of a correlation signal. The correlation receiver includes a master peak detector for determining whether an amplitude of a pulse of the correlation signal exceeds by at least a first delta an amplitude of a prior peak. If so, the master peak detector designates the pulse as a peak and sets an amplitude of the peak as the amplitude of the prior peak increased by a second delta. The master peak detector may also determine whether the amplitude of the correlation signal pulse falls below an amplitude of the prior peak less a droop value; and, if so, the master peak detector does not designate the pulse as a peak.
17 Citations
46 Claims
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1. A method for detecting peaks of a correlation signal, the method comprising:
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determining whether an amplitude of a pulse of the correlation signal exceeds by at least a first delta an amplitude of a prior peak; and
if so, designating the pulse as a peak and setting an amplitude of the peak as the amplitude of the prior peak increased by a second delta. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 29, 30, 31, 32, 33, 34)
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18. A correlation receiver for detecting peaks of a correlation signal, the correlation receiver comprising:
a master peak detector for determining whether an amplitude of a pulse of the correlation signal exceeds by at least a first delta an amplitude of a prior peak; and
, if so, designating the pulse as a peak and setting an amplitude of the peak as the amplitude of the prior peak increased by a second delta.- View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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35. A method for detecting a pulse input signal comprising:
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bandpass filtering the input signal with a bandpass filter having a transfer function shape;
correlation filtering the bandpass filtered signal with a correlation filter having a transfer function shape substantially similar to the transfer function shape of the bandpass filter; and
detecting peaks of the correlation filtered signal. - View Dependent Claims (36, 37, 38, 39, 40)
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41. A correlation receiver for detecting a pulse input signal comprising:
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a bandpass filter, having a transfer function shape, for bandpass filtering the input signal;
a correlation filter for correlation filtering the bandpass filtered signal, the correlation filter having a transfer function shape substantially similar to the transfer function shape of the bandpass filter; and
a detector for detecting peaks of the correlation filtered signal. - View Dependent Claims (42, 43, 44, 45, 46)
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Specification