Data recovery apparatus and method
AssigneeRealtek Semiconductor Corp.
InventorsHsu-Jung Tung, Tzuo-Bo Lin
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Abstract
A data recovery apparatus applied to a receiving device. The receiving device include an interface, an equalizer, a sampling unit, and an analyzing unit. The method of the present invention includes steps of the interface unit receiving an input signal, and the equalizer equalizing the input signal. Then the sampling unit sampling the equalized input signal. the analyzing unit analyzing and statistical calculating the sampled and equalized digital image signal, generating a statistically calculation results, and adjusting parameters of the equalizer according to the statistical calculation results. Therefore, when determining whether the parameters of the equalizer occurs the predetermined effort, changing the adjusting of parameters of the equalizer in the direction.
Claims22
A data recovery apparatus applied to an image signal receiving device, the image signal receiving device comprising:
- an interface unit receiving a digital image signal;
- an equalizer equalizing the digital image signal from the interface unit;
- a sampling unit sampling the equalized digital image signal;
- and
- an analyzing unit statistically calculating the sampled and equalized digital image signal, generating a first statistical calculation result, and adjusting parameters of the equalizer according to the first statistical calculation result.
A data recovery apparatus in a receiving device, comprising:
- an interface unit receiving an input signal;
- an equalizer, equalizing the input signal received by the interface unit;
- an over-sampling unit, sampling the equalized input signal;
- and
- an analyzing unit, statistically calculating the over-sampled and equalized input signal, and then adjusting parameters of the equalizer according to the result of the statistical calculation in a first adjusting direction;
- wherein when the analyzing unit erroneously adjusts the parameters of the equalizer in the first direction, the analyzing unit re-adjusts the parameters of the equalizer in a second adjusting direction.
A data recovery method, comprising:
- receiving an input signal;
- equalizing the input signal;
- sampling the equalized input signal;
- statistically calculating the sampled and equalized input signal for a first time;
- adjusting parameters for equalizing in a first adjusting direction according to the result of the first time statistical calculation;
- statistically calculating the sampled and equalized input signal for a second time after adjusting the parameters;
- comparing the results of the first time statistical calculation and the second time statistical calculation;
- and
- adjusting the parameters in a second adjusting direction according to the comparison of the results of the first time statistical calculation and the second time statistical calculation.
Dependencies are inferred from the claim text.