Baseline wandering correction device and method
AssigneeRealtek Semiconductor Corp.
InventorChen-Chih Huang
Life of this patent
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Abstract
A baseline wandering correction device for correcting baseline wandering of signals at a first output terminal and a second output terminal of a receiver includes: a control circuit for outputting a control signal according to voltages of the first and the second output terminals and a second threshold value; a voltage generation unit coupled to the control circuit for outputting a control voltage according to the control signal, the voltages of the first and the second output terminals, and a first threshold value; and a compensation current source coupled to the voltage generation unit for outputting a compensation current to the receiver according to the control voltage to correct the baseline wandering.
Claims20
A baseline wandering correction device for correcting baseline wandering of signals at a first output terminal and a second output terminal of a receiver, comprising:
- a control circuit for outputting a control signal according to voltages of the first and the second output terminals and a second threshold value;
- a voltage generation unit coupled to the control circuit for outputting a control voltage according to the control signal, the voltages of the first and the second output terminals, and a first threshold value;
- and
- a compensation current source coupled to the voltage generation unit for outputting a compensation current to the receiver according to the control voltage to correct the baseline wandering.
A baseline wandering correction method for correcting baseline wandering of signals at a first output terminal and a second output terminal of a receiver, comprising:
- outputting a control signal according to voltages of the first and the second output terminals and a second threshold value;
- outputting a control voltage according to the control signal, the voltages of the first and the second output terminals, and a first threshold value;
- and
- outputting a compensation current to the receiver according to the control voltage to correct the baseline wandering.
A baseline wandering correction device for correcting baseline wandering of signals at a first output terminal and a second output terminal of a receiver, comprising:
- a control circuit for outputting a control signal according to voltages of the first and the second output terminals and a second threshold value;
- a voltage generation unit coupled to the control circuit for outputting a control voltage according to the control signal, the voltages of the first and the second output terminals, and a first threshold value;
- and
- a compensation current source coupled to the voltage generation unit for outputting a compensation current to the receiver according to the control voltage to correct the baseline wandering;
- wherein the voltage generation unit comprises at least one output terminal for
- outputting the control voltage to the compensation current source, and an impedance coupled to the output terminal and the control circuit, an impedance value of which is adjusted according to the control signal.
A baseline wandering correction device for correcting baseline wandering of signals at a first output terminal and a second output terminal of a receiver, comprising:
- a control circuit for outputting a control signal according to voltages of the first and the second output terminals and a second threshold value;
- a voltage generation unit coupled to the control circuit for outputting a control voltage across a first control node and a second control node, according to the control signal, the voltages of the first and the second output terminals, and a first threshold value;
- and
- a compensation current source coupled to the voltage generation unit for outputting a compensation current to the receiver according to the control voltage to correct the baseline wandering;
- wherein the voltage generation unit comprises an impedance coupled to the compensation current source, and at least one variable current source coupled to the control circuit and the impedance, and between the first control node and the second control node, for outputting a current to the impedance to generate the control voltage, at least one output current value of the at least one variable current source being adjusted according to the control signal.
A baseline wandering correction device for correcting baseline wandering of signals at a first output terminal and a second output terminal of a receiver, comprising:
- a control circuit for outputting a control signal according to voltages of the first and the second output terminals and a second threshold value;
- a voltage generation unit coupled to the control circuit for outputting a control voltage according to the control signal, the voltages of the first and the second output terminals, and a first threshold value;
- and
- a compensation current source coupled to the voltage generation unit for outputting a compensation current to the receiver according to the control voltage to correct the baseline wandering;
- wherein the compensation current source further receives the control signal, and a transconductance value of the compensation current source is adjusted according to the control signal.
Dependencies are inferred from the claim text.