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구분 출원국
출원년도 ~ 키워드

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등록 타임스탬프 예측 장치 및 방법

타임스탬프 예측 장치 및 방법
이미지 확대
발명자
이승우, 이정희, 이범철, 백동명, 최강일, 박영호, 오상윤
출원번호
13328269 (2011.12.16)
공개번호
20120155497 (2012.06.21)
등록번호
8934506 (2015.01.13)
출원국
미국
협약과제
초록
An apparatus includes a difference extraction unit to extract a difference between a second time stamp value, which is obtained by adjusting a first time stamp value that is measured at a time of arrival of a synchronization message transmitted by the master at a Layer 3 to be synchronized in frequency with a clock of the master, and a third time stamp value, which is measured at a time of departure of the synchronization message from the master; a minimum filter to select a minimum from one or more difference values extracted by the difference extraction unit; and a delay variation calculation unit to estimate a time of arrival of a current synchronization message at the Layer 3 based on the selected minimum and calculate a delay variation.
KSP 제안 키워드
Calculation unit, Difference extraction, Extraction unit, Minimum filter, Time Stamp, delay variation, time of arrival(TOA)