Patent ID: 7319704

Claim:
A device capable of correcting time stamp value comprising: an original time counter configured to generate and output an original time value; a subtracter configured to receive a network time value from the outside and the original time value from the original time counter, subtract the original time value from the network time value, and output the difference as a cycle-time difference value; a first adder configured to receive an original time-stamp value generated from the original time value and the cycle-time difference value from the subtracter, add the cycle-time difference value to the original time-stamp value, and output the sum as a time-stamp value; a second adder configured to receive an offset value from the outside and the original time value from the original time counter, add the offset value to the original time value, and output the sum as the original time-stamp value; and a memory configured to receive the original time-stamp value attached real-time data from the original time-stamp value attacher and output the original time-stamp value attached real-time data in a first-in, first-out manner.