System and Method for Asymmetrically Adjusting Compensation Applied to a Signal
First Claim
1. A method for adjusting a signal, comprising:
- applying at least one of a loss compensation for frequency-dependent distortion and an offset compensation for DC-offset distortion to a signal before or after the distortion occurs to generate an output signal;
using a clock signal, sampling the output signal to generate a plurality of data values and boundary values, each value comprising either a high value or a low value based on the sampling of the output signal; and
based only on the high or low value of one or more of the data values and boundary values, adjusting at least one of the loss compensation and the offset compensation applied to the signal, wherein;
if the at least one of the loss compensation and the offset compensation applied to the signal is to be increased, the at least one of the loss compensation and the offset compensation is increased by a first amount;
if the at least one of the loss compensation and the offset compensation applied to the signal is to be decreased, the at least one of the loss compensation and the offset compensation is decreased by a second amount; and
the magnitude of the first amount is not equal to the magnitude of the second amount.
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Accused Products
Abstract
In one embodiment of the present invention, a method for adjusting a signal includes applying at least one of a loss compensation for frequency-dependent distortion and an offset compensation for DC-offset distortion to a signal before or after the distortion occurs to generate an output signal. The method also includes, using a clock signal, sampling the output signal to generate a plurality of data values and boundary values, each value comprising either a high value or a low value based on the sampling of the output signal. The method further includes, based only on the high or low value of one or more of the data values and boundary values, adjusting at least one of the loss compensation and the offset compensation applied to the signal, where if the at least one of the loss compensation and the offset compensation applied to the signal is to be increased, the at least one of the loss compensation and the offset compensation is increased by a first amount, if the at least one of the loss compensation and the offset compensation applied to the signal is to be decreased, the at least one of the loss compensation and the offset compensation is decreased by a second amount, and the magnitude of the first amount is not equal to the magnitude of the second amount.
115 Citations
24 Claims
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1. A method for adjusting a signal, comprising:
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applying at least one of a loss compensation for frequency-dependent distortion and an offset compensation for DC-offset distortion to a signal before or after the distortion occurs to generate an output signal; using a clock signal, sampling the output signal to generate a plurality of data values and boundary values, each value comprising either a high value or a low value based on the sampling of the output signal; and based only on the high or low value of one or more of the data values and boundary values, adjusting at least one of the loss compensation and the offset compensation applied to the signal, wherein; if the at least one of the loss compensation and the offset compensation applied to the signal is to be increased, the at least one of the loss compensation and the offset compensation is increased by a first amount; if the at least one of the loss compensation and the offset compensation applied to the signal is to be decreased, the at least one of the loss compensation and the offset compensation is decreased by a second amount; and the magnitude of the first amount is not equal to the magnitude of the second amount. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An adaptive equalizer, comprising:
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an equalizer configured to apply at least one of a loss compensation for frequency-dependent distortion and an offset compensation for DC-offset distortion to a signal before or after the distortion occurs to generate an output signal; a sampler configured to; receive the output signal and a clock signal; and using the clock signal, sample the output signal to generate a plurality of data values and boundary values, each value comprising either a high value or a low value based on the sampling of the output signal; and a controller configured to adjust at least one of the loss compensation and the offset compensation applied to the signal based only on the high or low value of one or more of the data values and boundary values, wherein; if the at least one of the loss compensation and the offset compensation applied to the signal is to be increased, the at least one of the loss compensation and the offset compensation is increased by a first amount; if the at least one of the loss compensation and the offset compensation applied to the signal is to be decreased, the at least one of the loss compensation and the offset compensation is decreased by a second amount; and the magnitude of the first amount is not equal to the magnitude of the second amount. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for adjusting a control variable, comprising:
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detecting the state of an objective variable, the objective variable comprising either a first state or a second state; and based on the detected state of the objective variable, adjusting a control variable used to control a system, wherein; the control variable is increased by a first amount if the objective variable comprises the first state; the control variable is decreased by a second amount if the objective variable comprises the second state; and the magnitude of the first amount is not equal to the magnitude of the second amount. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification