Patent ID: 11924319
Assignee: NEC PLATFORMS, LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 4:
5. The synchronization device according to claim 4, wherein
the frequency synchronizer includes a phase detector, a first digital filter, and a first divider,
the phase detector outputs a result of a phase comparison between the synchronous Ethernet signal and a first divided signal from the first divider,
the first digital filter removes a high frequency component of the result of the phase comparison,
the first digital controlled oscillator generates the frequency control information based on the result of the phase comparison from which the high frequency component is removed,
the first divider divides the frequency control information to generate the first divided signal,
the time synchronizer includes a time detector, a second digital filter, and a second divider,
the time detector outputs a result of a time comparison between a time based on the time packet and a second divided signal from the second divider,
the second digital filter removes a high frequency component of the result of the time comparison,
the second digital controlled oscillator adds the frequency control information from the first digital controlled oscillator and the time control information according to the result of the time comparison from which the high frequency component is removed, and
the second divider divides the added result to generate the second divided signal.