CIRCUIT LIFETIME MEASURING DEVICE AND METHOD
First Claim
1. a circuit lifetime measuring device to estimate the rest lifetime of a target circuit, comprising:
- a correlation signal generating circuit for providing a correlation signal in which at least some operating settings of the correlation signal generating circuit and the target circuit vary correspondingly;
a storage circuit for storing an initial relation between a reference clock and the correlation signal;
a measuring circuit, coupled to the correlation signal generating circuit, for measuring a present relation between the reference clock and the correlation signal; and
an estimating circuit, coupled to the storage circuit and the measuring circuit, for generating an estimation value according to the initial relation and the present relation, wherein the estimation value indicates the rest lifetime of the target circuit.
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Accused Products
Abstract
The present invention discloses a circuit lifetime measuring device to estimate the rest lifetime of a target circuit, comprising: a reference clock receiving end for receiving a reference clock; a correlation signal generating circuit for providing a correlation signal in which at least some operating settings of the correlation signal generating circuit and the target circuit vary synchronously; a storage circuit for storing an initial relation between the reference clock and the correlation signal; a measuring circuit, coupled to the reference clock receiving end and the correlation signal generating circuit, for measuring a present relation between the reference clock and the correlation signal; and an estimating circuit, coupled to the storage circuit and the measuring circuit, for generating an estimation value according to the initial relation and the present relation, wherein the estimation value indicates the rest lifetime of the target circuit.
5 Citations
18 Claims
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1. a circuit lifetime measuring device to estimate the rest lifetime of a target circuit, comprising:
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a correlation signal generating circuit for providing a correlation signal in which at least some operating settings of the correlation signal generating circuit and the target circuit vary correspondingly; a storage circuit for storing an initial relation between a reference clock and the correlation signal; a measuring circuit, coupled to the correlation signal generating circuit, for measuring a present relation between the reference clock and the correlation signal; and an estimating circuit, coupled to the storage circuit and the measuring circuit, for generating an estimation value according to the initial relation and the present relation, wherein the estimation value indicates the rest lifetime of the target circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A circuit lifetime measuring method, which is carried out by a circuit lifetime measuring device for measuring the rest lifetime of a target circuit, comprising the following steps:
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receiving a reference clock; providing a correlation signal by a correlation signal generating circuit in which at least some operating settings of the correlation signal generating circuit and the target circuit vary correspondingly; storing an initial relation between the reference clock and the correlation signal; measuring a present relation between the reference clock and the correlation signal; and generating an estimation value according to the initial relation and the present relation in which the estimation value indicates the rest lifetime of the target circuit. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification