Patent ID: 8572200
Filing Date: 2013-10-29
Classification: H04J,H04L

Abstract:
1. A master/slave decision device applied to a first network device, wherein the first network device is coupled to a second network device, and the master/slave decision device comprises: a seed distance detecting unit, for detecting a seed distance between a first seed utilized in a first scrambler of the first network device and a second seed utilized in a second scrambler of the second network device; and a decision unit, coupled to the seed distance detecting unit, for determining the first network device to be a master device or a slave device according to the seed distance; wherein when the decision unit determines the first network device to be the master device, the first network device utilizes a first clock to transmit data; and when the decision unit determines the first network device to be the slave device, the first network device utilizes a second clock to transmit data, where the second clock is different from the first clock; wherein the first clock is a local clock of the first network device, and the second clock is a recovery clock which is generated by performing a timing recovery operation upon a received data by the first network device; and wherein the decision unit determines if resetting the first network device to be the slave device according to a frequency difference between the first clock and the second clock.