System for reconstruction of non-uniformly sampled signals
First Claim
1. A method that reconstructs a non-uniformly sampled analog signal, comprising:
- sampling a signal, with an equidistant sample period, by at least one of an analog-digital converter or a time interleaved analog-digital converter;
determining a quantized non-uniformly sampled signal comprising the sampled signal with an amplitude error between the signal, and the non-uniformly sampled signal;
determining a reconstructed amplitude error based on a time offset and the non-uniformly sampled signal;
subtracting the reconstructed amplitude error from the non-uniformly sampled signal to form a reconstructed non-uniformly sampled signal; and
outputting the reconstructed non-uniformly sampled signal.
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Abstract
A signal processing system allows reconstruction of a non-uniformly sampled analog signal including sampling an analog signal at a sampling period of resulting in a quantized non-uniformly sampled signal. The non-uniformly sampled signal includes a sampled signal and an amplitude error between a signal sampled with the equidistant sample period and the non-uniformly sampled signal. A reconstructed amplitude error is determined through the time offset and the non-uniformly sampled signal, and is subtracted from the non-uniformly sampled signal. The signal processing system may be implemented in an electrocardiogram monitoring device or a mobile phone device.
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Citations
20 Claims
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1. A method that reconstructs a non-uniformly sampled analog signal, comprising:
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sampling a signal, with an equidistant sample period, by at least one of an analog-digital converter or a time interleaved analog-digital converter;
determining a quantized non-uniformly sampled signal comprising the sampled signal with an amplitude error between the signal, and the non-uniformly sampled signal;
determining a reconstructed amplitude error based on a time offset and the non-uniformly sampled signal;
subtracting the reconstructed amplitude error from the non-uniformly sampled signal to form a reconstructed non-uniformly sampled signal; and
outputting the reconstructed non-uniformly sampled signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A signal processing apparatus that reconstructs a non-uniformly sampled analog signal, sampled by at least one of an analog-digital converter or a time interleaved analog-digital converter, comprising:
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an input operable to receive an analog signal;
an output configurable to provide a digital output signal;
an evaluator operable to reconstruct an amplitude error based on a time offset and the non-uniformly sampled signal;
a subtract unit operable to subtract the amplitude error from the non-uniformly sampled signal to form a reconstructed non-uniformly sampled signal; and
an output configurable to output the reconstructed non-uniformly sampled signal. - View Dependent Claims (9, 10, 11, 12)
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13. An electrocardiogram monitoring device that reconstructs a non-uniformly sampled analog signal, sampled by at least one of an analog-digital converter or a time interleaved analog-digital converter, comprising:
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an input operable to receive an analog signal;
an output configurable to provide a digital output signal;
an evaluator operable to reconstruct an amplitude error based on a time offset and the non-uniformly sampled signal;
a subtract unit operable to subtract the amplitude error from the non-uniformly sampled signal to form a reconstructed non-uniformly sampled signal; and
an output configurable to output the reconstructed non-uniformly sampled signal.
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14. A mobile phone that reconstructs a non-uniformly sampled analog signal, sampled by at least one of an analog-digital converter or a time interleaved analog-digital converter, comprising:
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an input operable to receive an analog signal;
an output configurable to provide a digital output signal;
an evaluator operable to reconstruct an amplitude error based on a time offset and the non-uniformly sampled signal; and
a subtract unit operable to subtract the amplitude error from the non-uniformly sampled signal to form a reconstructed non-uniformly sampled signal; and
an output configurable to output the reconstructed non-uniformly sampled signal.
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15. A computer program product comprising:
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a computer useable medium having computer readable code embodied in the medium, the computer readable code comprising;
computer readable code executable to sample a signal by a at least one of a analog-digital converter or a time interleaved analog-digital converter;
computer readable code executable to determine a quantized non-uniformly sampled signal comprising a sampled signal and an amplitude error between a signal sampled with an equidistant sample period and the non-uniformly sampled signal;
computer readable code executable to determine a reconstructed amplitude error based on the time offset and the non-uniformly sampled signal;
computer readable code executable to subtract the reconstructed amplitude error from the non-uniformly sampled signal to form a reconstructed non-uniformly sampled signal and;
computer readable code executable to output the reconstructed non-uniformly sampled signal.
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16. A signal processing apparatus that reconstructs a non-uniformly sampled analog signal, sampled by at least one of an analog-digital converter or a time interleaved analog-digital converter, a sampling period comprises a period, comprising:
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input means for receiving an analog signal;
output means for providing a digital output signal;
evaluation means for reconstructing an amplitude error based on the time offset and the non-uniformly sampled signal;
subtraction means for subtracting the amplitude error from the non-uniformly sampled signal to form a reconstructed non-uniformly sampled signal; and
means for outputting the reconstructed non-uniformly sampled signal. - View Dependent Claims (17)
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18. A method that reconstructs a non-uniformly sampled analog signal, comprising:
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determining a quantized non-uniformly sampled signal comprising a sampled signal and an amplitude error between a signal and the non-uniformly sampled signal, where the signal is sampled with an equidistant sample period;
determining a reconstructed amplitude error based on a time offset and the non-uniformly sampled signal; and
subtracting the reconstructed amplitude error from the non-uniformly sampled signal to form a reconstructed non-uniformly sampled signal. - View Dependent Claims (19, 20)
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Specification