Patent ID: 7246019

Claim:
An apparatus for measuring a delay time, comprising: a first measurement device, comprising: a first pulse generating device, for generating a plurality of first phase signals and a first standard signal, wherein a first conducting wire receives the first standard signal and outputs a first transmission signal; and a first signal generating device, connected to the first pulse generation device, for receiving the first phase signals and sampling the first transmission signal by sequentially using the first phase signals to sequentially obtain a plurality of first sampling results, wherein the first sampling results are identified by sequentially using a first identifying level to obtain a first identification result; and a second measurement device, comprising: a second pulse generating device, for generating a plurality of second phase signals and a second standard signal, wherein at least an adjacent conducting wire close to a second conducting wire receives an inverse signal of the second standard signal, and the second conducting wire receives the second standard signal and outputs a second transmission signal; and a second signal generating device, connected to the second pulse generation device, for receiving the second phase signals and sampling the second transmission signal by sequentially using the second phase signals to sequentially obtain a plurality of second sampling results, wherein the second sampling results are sequentially identified by a second identifying level to obtain a second identification result; wherein, a delay time between the first transmission signal and the second transmission signal is obtained from a difference between the first identification result and the second identification result.