| 摘要 |
PURPOSE:To detect the presence of pulses excepting for the normal phases of extracted bit clock signals and frame signals in a monitoring method for clock detecting the pulse interruption of the extracted bit clock signals and frame signals. CONSTITUTION:An arithmetic means 2 obtains a signal decided by the logical operation of extracted frame signals and delayed plural signals by generating the plural frame signals, for which the maximum delay is one frame cycle, made different at every cycle of a bit clock pulse, and the interruption of the signal decided by the logical operation is detected 3a and 3b. Thus, it is detected that the pulse excepting for the normal phase is present on the extracted bit clock signals and frame signals. |
