| 摘要 |
A counter (11), synchronized with a counter (25) in another communication device (2), outputs a first counter value that indicates a point in time before a processing unit (13) that processes PTP packets receives input. A subtraction unit (12) subtracts said first counter value from a correction field in a PTP packet. The other counter (25) outputs a second counter value that indicates the point in time at which another processing unit (23) that processes PTP packets finishes processing. A modification unit (24) modifies the correction field on the basis of the value of said correction field and the second counter value. A communication device, communication method, and communication system whereby a delay-amount field can be modified using a simple architecture are thus provided. |
