Method and apparatus for performing data pulse detection
AssigneeNortel Networks Limited
InventorAnthony K. Dale Brown
Life of this patent
Estimating the term…
Abstract
The present invention relates to a data pulse receiver for receiving data signals propagating on a high speed data transmission medium, where the medium includes both data and clock channels. A hysteresis control signal is generated from the clock signal and it is used to discriminate against unwanted noise signals during the detection of data pulses conveyed by the data signal.
Claims26
A data pulse receiver for receiving data signals propagating on a high speed data transmission medium including data and clock channels, said data pulse receiver including:
- a first input for coupling to a data channel of the transmission medium to receive data pulses;
- a second input for coupling to a clock channel of the transmission medium to receive a clock signal;
- a hysteresis generating unit coupled to said second input for generating a hysteresis control signal at least in part on a basis of the clock signal;
- a data pulse detector coupled to said first input and to said hysteresis generating unit for receiving the hysteresis control signal, for outputting amplified data pulses.
A pulse detection circuit capable of generating a hysteresis control signal for use by a data pulse receiver receiving data signals propagating on a high speed data transmission medium including data and clock channels, said pulse detection circuit including:
- an input for coupling to a clock channel of the transmission medium to receive a clock signal;
- a hysteresis generating unit coupled to said input for generating a hysteresis control signal at least in part on a basis of the clock signal, said hysteresis control signal being capable of adjusting a pulse detection level of a data pulse detector of the data pulse receiver.
A method for receiving data signals propagating on a high speed data transmission medium including data and clock channels, said method including:
- sensing fluctuations in a signal propagating on a data channel of the high speed data transmission medium, said fluctuations being potentially representative of data pulses;
- detecting a clock signal propagating on a clock channel of the high speed data transmission medium;
- processing the detected clock signal to generate a hysteresis control signal;
- utilizing said hysteresis control signal to determine which of the fluctuations sensed on said data channel are representative of data pulses.
A data pulse receiver for receiving data signals propagating on a high speed data transmission medium including data and clock channels, said data pulse receiver including:
- first input means for coupling to a data channel of the transmission medium to receive data pulses;
- second input means for coupling to a clock channel of the transmission medium to receive a clock signal;
- hysteresis generating means coupled to said second input means for generating a hysteresis control signal at least in part on a basis of the clock signal;
- data pulse detection means coupled to said first input means and to said hysteresis generating means for receiving the hysteresis control signal, for outputting amplified data pulses.
A pulse detection circuit capable of generating a hysteresis control signal for use by a data pulse receiver receiving data signals propagating on a high speed data transmission medium including data and clock channels, said pulse detection circuit including:
- input means for coupling to a clock channel of the transmission medium to receive a clock signal;
- hysteresis generating means coupled to said input means for generating a hysteresis control signal at least in part on a basis of the clock signal, said hysteresis control signal being capable of adjusting a pulse detection level of a data pulse detector of the data pulse receiver.
Dependencies are inferred from the claim text.