Patent ID: 9729262
Date: 2017-08-08
CPC Classifications: H04B,H04J

Claim:
1. An optical receiver comprising: a reception module that receives a frame; a first detector that detects a head position of a first layer, the head position being included in the frame received by the reception module; a second detector that detects a head position of a second layer, the head position being included in the frame received by the reception module; a shift module that shifts, based on a shift amount input for each layer, the frame so that the head position of the first layer and the head position of the second layer are located at respective predetermined positions, the head position of the first layer being detected by the first detector, the head position of the second layer being detected by the second detector, the shift module using the head position of the first layer, the head position of the second layer, a first shift amount for extracting the header of the first layer from the frame, and a second shift amount for deleting the header of the first layer from the frame to shift the frame; a first extraction module that extracts a header of the first layer from the frame after the frame is shifted by the shift module; and a second extraction module that extracts a header of the second layer from the frame after the frame is shifted by the shift module.