Data receiver and data receiving method
AssigneesSamsung Electronics Co., Ltd., Korea Advanced Institute of Science and Technology
InventorsYoung-su Cha, Kyoung-Hoon Yang
Life of this patent
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Abstract
A data receiver and a data receiving method in which the data receiver generates two comparison signals based on amplitude modulated differential input signals, amplifies the comparison signals, compares amplified signals, and outputs logic operation results based on the amplitude modulated differential input signals and the comparison signals, thereby detecting data bits. Accordingly, the number of necessary amplifiers and comparators is reduced and a separate reference voltage generator is not needed, so that chip size reduction and low-power operation is accomplished.
Claims15
A receiver comprising:
- a first comparator configured to receive and compare amplitude modulated differential input signals and to generate a first indication signal and a second indication signal, which respectively have different voltage levels, as a result of the comparison;
- an amplifier configured to receive and amplify the amplitude modulated differential input signals, to output differential output signals corresponding to a voltage difference between the received signals to a pair of output terminals, and to supply a current to one of the output terminals in response to the first and second indication signals;
- a second comparator configured to compare voltages of the respective output terminals of the amplifier and to generate a third indication signal as a result of the comparison;
- and
- a logic circuit configured to receive the first indication signal output from the first comparator and the third indication signal output from the second comparator, to perform, a logic operation on the first and third indication signals, and to output a logic operation result.
A data receiving method comprising:
- receiving and comparing amplitude modulated differential input signals and generating a first indication signal and. a second, indication signal which respectively have different voltage levels, as a result of the comparison performed by a first comparator;
- receiving and amplifying the amplitude modulated differential input signals, outputting differential output signals corresponding to a voltage difference between the received signals to a pair of output terminals of an amplifier, and supplying a current to one of the output terminals in response to the first and second indication signals, by using the amplifier;
- comparing voltages of the respective output terminals of the amplifier and generating a third indication signal as a result of the comparison performed by a second comparator:
- and
- receiving the first indication signal output from the first comparator and the third indication signal output from the second comparator, performing a logic operation on the first and third indication signals, and outputting a logic operation result, by using a logic circuit.
Dependencies are inferred from the claim text.