| 摘要 |
PURPOSE:To improve the operation stability of a circuit by detecting a frame pattern in a low speed. CONSTITUTION:In the circuit detecting the frame pattern in a signal made by block multiplexing the signal having same frame pattern, after a serial- parallel conversion circuit 103 serially-parallelly converts the signal into 1:(m), a signal drop circuit 104 extracts the signal with a fixed rate and a frame pattern detecting circuit 105 detects a frame pattern appearing at the extracted signal string in a fixed formula. |
