METHOD OF ESTIMATING AN INTERSECTION BETWEEN AT LEAST TWO CONTINUOUS SIGNAL REPRESENTATIONS
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United States of America Patent
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app pub date -
Nov 16, 2007
filing date -
May 20, 2003
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Abstract
The invention relates to a method of estimating an intersection between at least two continuous signal representations in a pulse width modulator, at least one of the continuous signal representations being non-linear, the method comprising the step of providing an intersection estimate between the at least two continuous signal representations by means of at least one equation representing an expansion of at least one iteration comprising at least one iterative call of a function describing the continuous signal representation being non-linear and whereby the estimating of intersections are performed in a pulse width modulation modulator. According to an embodiment of the invention, a simple iterative call of the established continuous signal representation, e.g. an interpolation polynomial, will provide the desired intersection. It should be noted that the established estimate might be provided without any complicated root solving and avoiding division and even square root.
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