| Presentation | 2021-03-05 Improving Estimation Method for Time Drift Characteristics Using Thermostatic Chamber Kiyonari Katsura, Naoto Hoshikawa, Katsumi Hirata, Atsushi Shiraki, Tomoyoshi Ito, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Since a computer system’s time deviations can result in system malfunction, time correction technology via IP communication is generally used. Some computers do not have access to the Inernet, so that stand-alone time correction method which does not use a network has been proposed for such devices. In that method, the time drift characteristic, which represents the relationship between the CPU core temperature and the system time deviations, is estimated and used for time correction. However, it is important to improve the accuracy of the estimation of the characteristics in order to further improve the effectiveness of the time correction. In this paper, we reveal that the accuracy of the characteristics estimation can be improved by adjusting the measurement intervals and keeping the CPU core temperature constant. The measurement intervals can be easily adjusted by changing the program, and to keep temperature constant can be achieved by using a thermostatic chamber. In an experiment, we compared the characteristics estimation accuracy with that of the conventional estimation method under room temperature. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | time correction / CPU core temperature |
| Paper # | NS2020-144 |
| Date of Issue | 2021-02-25 (NS) |
| Conference Information | |
| Committee | IN / NS |
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| Conference Date | 2021/3/4(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General |
| Chair | Kenji Ishida(Hiroshima City Univ.) / Akihiro Nakao(Univ. of Tokyo) |
| Vice Chair | Kunio Hato(Internet Multifeed) / Tetsuya Oishi(NTT) |
| Secretary | Kunio Hato(Hiroshima City Univ.) / Tetsuya Oishi(KDDI Research) |
| Assistant | / Shinya Kawano(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Information Networks / Technical Committee on Network Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Improving Estimation Method for Time Drift Characteristics Using Thermostatic Chamber |
| Sub Title (in English) | |
| Keyword(1) | time correction |
| Keyword(2) | CPU core temperature |
| 1st Author's Name | Kiyonari Katsura |
| 1st Author's Affiliation | National Institute of Technology, Oyama College(NIT, Oyama College) |
| 2nd Author's Name | Naoto Hoshikawa |
| 2nd Author's Affiliation | National Institute of Technology, Oyama College(NIT, Oyama College) |
| 3rd Author's Name | Katsumi Hirata |
| 3rd Author's Affiliation | National Institute of Technology, Oyama College(NIT, Oyama College) |
| 4th Author's Name | Atsushi Shiraki |
| 4th Author's Affiliation | Chiba University(Chiba Univ.) |
| 5th Author's Name | Tomoyoshi Ito |
| 5th Author's Affiliation | Chiba University(Chiba Univ.) |
| Date | 2021-03-05 |
| Paper # | NS2020-144 |
| Volume (vol) | vol.120 |
| Number (no) | NS-413 |
| Page | pp.pp.126-130(NS), |
| #Pages | 5 |
| Date of Issue | 2021-02-25 (NS) |