Phase modulated data link for low-swing wireline applications
AssigneeRambus Inc.
InventorsMasum Hossain, Richelle L. Smith, Carl W. Werner
Life of this patent
Estimating the term…
Abstract
A communication system comprises a transmitter and a receiver that communicate differential phase modulated data over a wireline channel pair. The transmitter encodes data symbols by generating first and second data signals with differentially phase shifted signal transitions with respect to one another. The receiver receives the first data signal and the second data signal and samples the first data signal based on a signal transition timing of the second data signal to generate a first output data symbol. The receiver furthermore samples the second data signal based on signal transition timing of the first data signal to generate a second output data symbol.
Claims20
A chip comprising:
- a receiver including:
- an input node to receive an input data signal;
- an encoder to encode the input data signal as differential phase-modulated signals including a first data signal and a second data signal that are differential in phase, a phase shifted signal transition in the first data signal encoding a first binary symbol type and a phase shifted signal transition in the second data signal encoding a second binary symbol type;
- and
- a differential output to output the differential phase-modulated signals including the first data signal and the second data signal.
A method comprising:
- receiving, by an input node of a transmitter, an input data signal;
- encode, by an encoder of the transmitter, the input data signal as differential phase-modulated signals including a first data signal and a second data signal that are differential in phase, a phase shifted signal transition in the first data signal encoding a first binary symbol type and a phase shifted signal transition in the second data signal encoding a second binary symbol type;
- and
- output, by a differential output of the transmitter, the differential phase-modulated signals including the first data signal and the second data signal.
A chip comprising:
- a receiver including:
- an input means for receiving an input data signal;
- an encoding means for encoding the input data signal as differential phase-modulated signals including a first data signal and a second data signal that are differential in phase, a phase shifted signal transition in the first data signal encoding a first binary symbol type and a phase shifted signal transition in the second data signal encoding a second binary symbol type;
- and
- an output means for outputting the differential phase-modulated signals including the first data signal and the second data signal.
Dependencies are inferred from the claim text.