Differential signal-delaying apparatus, receiver employing the apparatus, and communication system

摘要

Two different delay unit(41,42) delays first and second signals of a differential signal, thereby generating two different delay signals, respectively. A delay control unit(45) controls respective delay times in the two different delay unit(41,42), thereby varying a delay time difference that is a difference between the respective delay times in the two different delay unit(41,42). An error-detecting unit(43) detects an error in a signal for each change in delay time deference, which signal is based on the differential signal. A counting unit(44) counts the number of times of errors per predetermined time. The delay control unit(45) sets the respective delay times in the two different delay unit(41,42) to a delay time difference in which the number of times of errors per predetermined time is minimized. As a result, the occurrence of differential signal skew-caused errors is suppressed to an extreme extent. <IMAGE>