초록 ▼

A jitter detection method and apparatus for informing an adaptive equalizer that the correlated jitter of transmitted data exceeds a predetermined jitter value. In one embodiment of the present invention, a jitter detection circuit receives transmitted data symbol pulses and clock signal pulses. The

A jitter detection method and apparatus for informing an adaptive equalizer that the correlated jitter of transmitted data exceeds a predetermined jitter value. In one embodiment of the present invention, a jitter detection circuit receives transmitted data symbol pulses and clock signal pulses. The jitter detection circuit then compares a specified edge (e.g., the falling edge) of an incoming data pulse with the corresponding specified edge (e.g., the falling edge) of a clock signal pulse to determine if an original phase error between the incoming data pulse and the clock pulse exists. Similarly, the jitter detection circuit detect subsequent phase errors between subsequent data pulses and subsequent clock pulses. The original detected phase error will then be compared against subsequently detected phase errors. Based on this comparison of the phase errors, the jitter detection circuit then informs the adaptive equalizer of the degree of phase and amplitude compensation that it needs to provide.

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus comprising:a jitter detection circuit measuring a plurality of phase errors including a first phase error and a second phase error between a selected plurality of data signals and a corresponding plurality of clock signals, wherein the jitter detection circui

[ What is claimed is:] [1.] An apparatus comprising:a jitter detection circuit measuring a plurality of phase errors including a first phase error and a second phase error between a selected plurality of data signals and a corresponding plurality of clock signals, wherein the jitter detection circuit provides a jitter compensation signal indicative of whether a correlated jitter corresponding to a difference between the first and second phase errors exceeds a predetermined range.