Japan Standard Time Group

Publication



2007


กกกOral Presentationกกก


Hiroshi Toriyama, Akihiko Machizawa, and Tsukasa Iwama
High Performance NTP Server using FPGA (abstract, poster1, poster2)
PTB-BIPM Workshop on the Impact of Information Technology in Metrology (poster session) @@@@



Tsukasa Iwama, Akihiko Machizawa, and Hiroshi Toriyama
High-speed Network Time-Transfer using Data-Filtering Method (abstract, oral slide)
PTB-BIPM Workshop on the Impact of Information Technology in MetrologyiM09-3)



2006


กกกJournal Articlesกกก

Akihiko Machizawa, Tsukasa Iwama, and Hiroshi Toriyama
Packet Arrival Interval (PAI) Based Time Synchronization (PDF) (in Japanese) @@@@
The Institute of Electronics, Information and Communication Engineers (Vol.J89-B No.10 P.1855`1866) copyright(c)2006 IEICE No.07RB0142 @@@@



Hiroshi Toriyama, Akihiko Machizawa, and Tsukasa Iwama
Development of a Hardware SNTP Server (PDF) (in Japanese) @@@@
The Institute of Electronics, Information and Communication Engineers (Vol.J89-B No.10 P.1867`1873) copyright(c)2006 IEICE No.07RB0140 @@@@



Tsukasa Iwama, Akihiro Kaneko, Akihiko Machizawa, and Hiroshi Toriyama
Precise Estimation of High-Speed Network Time-Transfer (PDF) (in Japanese) @@@@
The Institute of Electronics, Information and Communication Engineers (Vol.J89-B No.12 P.2553`2563) copyright(c)2006 IEICE No.07RB0145 @@@@

ฆThe thesis of The Institute of Electronics, Information and Communication Engineers can be inspected with IEICE Transactions Online.



กกกConference Papersกกก

Tsukasa Iwama, Akihiro Kaneko, Akihiko Machizawa, and Hiroshi Toriyama @@@@
Precise Estimations of High-Speed Network Time-Transfer@iPDFj@@@@
Asia pacific Time and Frequency Workshop 2006 (ATF-2006) (Vol.TF6 No.P27 P.399`404)




2005


กกกJournal Articlesกกก

Yoshiaki Kitaguchi, Akihiko Machizawa, Masato Tsuru, Yuji Oie, Katsuya Hakozaki
The Advanced Network Time Synchronous System by Self-discarding Packet Technique
Information Processing Society of Japan(Vol.46, no.4, pp.1017-1024)



Akihiko Machizawa, Hiroshi Toriyama, Tsukasa Iwama, Akihiko Kaneko
Development of a Cascadable Passing Through Precision UDP Time-Stamping Device (PDF) (in Japanese) @@@@
The Institute of Electronics, Information and Communication Engineers(Vol.J88-B, no.10, pp.2002-2011) copyright(c)2005 IEICE No.07RB0143 @@@@

ฆThe thesis of The Institute of Electronics, Information and Communication Engineers can be inspected with IEICE Transactions Online. @@@@



กกกConference Papersกกก

Tsukasa Iwama, Akihiro Kaneko, Akihiko Machizawa, and Hiroshi Toriyama
Precise Estimation of Time Transfer in Internet Environment
The Institute of Electronics, Information and Communication Engineers(No.IA2005-16, pp.25-31 (2005))



Akihiko Machizawa, Hiroshi Toriyama, Tsukasa Iwama
Packet Arrival Interval(PAI) based Time Synchronization
The Institute of Electronics, Information and Communication Engineers(no.CQ2005-73, pp.35-40 (2005))



Hiroshi Toriyama, Akihiko Machizawa, Tsukasa Iwama, Akihiko Kaneko
Development of a Hardware SNTP Server
The Institute of Electronics, Information and Communication Engineers(Vol.CQ2005-12, pp.21-24 (2005))



Akihiko Machizawa, Hiroshi Toriyama, Tsukasa Iwama, Akihiko Kaneko
Development of a Cascadable Passing Through Precision UDP Time-Stamping Device
The Institute of Electronics, Information and Communication Engineers(Vol.IA2004 No.25 P.39`44)



Hiroshi Toriyama, Akihiko Machizawa, Tsukasa Iwama, Akihiko Kaneko
Precise Measurement of Packet Transmission Delay in High-Speed Internet Environment
The Institute of Electronics, Information and Communication Engineers(Vol.IA2004 No.24 P.33`37)



กกกOral Presentationกกก

Tsukasa Iwama, Hiroshi Toriyama, Yoshiyuki Hashikawa, Takayuki Amemiya, Norikazu Kubotera, Yoshinobu Tanigawa
Experimental System of Time Stamping Based on the Japan Standard Time -(1) Integrated Prototype Systems -
The Institute of Electronics, Information and Communication Engineers(Vol.2005, No.B-16-6 P.405)


Norikazu Kubotera, Shigeyoshi Shima, Kentaro Ishizaki, Tsukasa Iwama, Hiroshi Toriyama
Experimental System of Time Stamping Based on the Japan Standard Time -(2) High Accuracy and High Reliable Time Distribution Subsystem : Time Distribution by Time Linking Method -
The Institute of Electronics, Information and Communication Engineers(Vol.2005, No.B-16-7 P.406)


Hiroaki Oguro, Yoshiyuki Hashikawa, Yoshinobu Tanigawa, Yutaka Tagawa, Tsukasa Iwama, Hiroshi Toriyama
Experimental System of Time Stamping Based on the Japan Standard Time -(3) Universal Time-stamp Validation Subsystem : Time Traceability -
The Institute of Electronics, Information and Communication Engineers(Vol.2005, No.B-16-8 P.407)



Yoshinobu Tanigawa, Yutaka Tagawa, Tsukasa Iwama, Hiroshi Toriyama
Experimental System of Time Stamping Based on the Japan Standard Time -(4) Universal Time-stamp Validation Subsystem : Time-stamp Assurance for Long-term -
The Institute of Electronics, Information and Communication Engineers(Vol.2005, No.B-16-9 P.408)



Hiroaki Sakamoto, Shuichi Nishio, Yoshiyuki Hashikawa, Masahiro Katada, Tsukasa Iwama, Hiroshi Toriyama
Experimental System of Time Stamping Based on the Japan Standard Time -(5) Subsystem of High Performance and High Security Time-stamp Issuance/Verification 1 : Improvement in the Performance of Time-Stamp Issuance -
The Institute of Electronics, Information and Communication Engineers(Vol.2005, No.B-16-10 P.409)



Takayuki Amemiya, Masakazu Uehata, Tsukasa Iwama, Hiroshi Toriyama
Experimental System of Time Stamping Based on the Japan Standard Time -(6) Subsystem of High Performance and High Security Time-stamp Issuance/Verification 2 : Improvement in the Performance of Time-Stamp Issuance -
The Institute of Electronics, Information and Communication Engineers(Vol.2005, No.B-16-11 P.410)



Akihiro Kaneko, Akihiko Machizawa, Tsukasa Iwama, Hiroshi Toriyama
Time Comparison via Network
The Institute of Electronics, Information and Communication Engineers

Tsukasa Iwama, Akihiro Kaneko, Akihiko Machizawa, Hiroshi Toriyama
Statistical Processing of Packet Transmission Delay in the Internet Environment
The Institute of Electronics, Information and Communication Engineers



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2004


กกกJournal Articlesกกก

Yoshiaki Kitaguchi, Akihiko Machizawa, Katsuya Hakozaki, Shin-ichi Nakagawa
The network bandwidth measurement based on one-way delay using a High-precicion PC (PDF) (in Japanese) @@@@
The Institute of Electronics, Information and Communication Engineers(Vol.J87-B No.10 P.1696`1703) copyright(c)2004 IEICE No.07RB0141 @@@@

Akihiko Machizawa, Yoshiaki Kitaguchi
Improvement of Software Timestamp Accuracy with Interrupt Handler and High Precision PC (PDF) (in Japanese) @@@@
The Institute of Electronics, Information and Communication Engineers(Vol.J87-B No.10 P.1678`1685) copyright(c)2004 IEICE No.07RB0144 @@@@

ฆThe thesis of The Institute of Electronics, Information and Communication Engineers can be inspected with IEICE Transactions Online. @@@@

กกกOral Presentationกกก

Tsukasa Iwama, Akihiro Kaneko, Akihiko Machizawa, Hiroshi Toriyama
Real-Time Measurement of One-Way Delay in the Internet Environment (PDFj
Asia-Pacific Workshop on Time and Frequency 2004(ATF2004) (No.TD-5)

Tsukasa Iwama, Akihiro Kaneko, Akihiko Machizawa, Hiroshi Toriyama
Real-Time Measurement of One-Way Delay in the Internet Environment
The Institute of Electronics, Information and Communication Engineers(Vol.2004, No.B-16-1 P.386)

Hiroshi Toriyama, Akihiko Machizawa, Akihiro Kaneko, Tsukasa Iwama
Precise Measurement of One-Way Delay in the Home Internet Environment
The Institute of Electronics, Information and Communication Engineers(Vol.2004, No.B-16-7)

Tsukasa Iwama, Akihiro Kaneko, Hiroshi Toriyama
Development for Experimental Systems of Time Stamping Based on the Japan Standard Time
The Institute of Electronics, Information and Communication Engineers(Vol.2004, No.B-16-2)

กกกJournalกกก

Tsukasa Iwama, Noriyuki Kurihara, Michito Imae, Kuniyasu Imamura, Noboru Kotake, Tadahiro Goto, Tomonari Suzuyama, Takao Morikawa
Development of the Trusted Time Stamping System@iPDFj

Tsukasa Iwama, Noriyuki Kurihara, Michito Imae, Tomonari Suzuyama, Noboru Kotake, Atsushi Otsuka
Frequency Standards Calibration System and Remote Calibration System@iPDFj

Tsukasa Iwama, Noriyuki Kurihara, Michito Imae, Mizuhiko Hosokawa, Takao Morikawa
Global Mutual Recognition Arrangement(Global MRA) and Traceability@iPDFj

Tsukasa Iwama, Noriyuki Kurihara, Michito Imae, Kuniyasu Imamura, Noboru Kotake, Tadahiro Goto
Development of the Trusted Time Stamping System@iPDFj
Journal of the NICT(Vol.50 No.2/1 P.205`209)

Tsukasa Iwama, Noriyuki Kurihara, Michito Imae, Tomoya Suzuyama, Noboru Kotake, Atsushi Otsuka
Frequency Standards Calibration System and Remote@iPDFj
Journal of the NICT(Vol.50 No.2/1 P.195`203)

Tsukasa Iwama, Noriyuki Kurihara, Michito Imae, Mizuhiko Hosokawa, Takao Morikawa
Global Mutual Recognition Arrangement(Global MRA)and Traceability@iPDFj
Journal of the NICT(Vol.50 No.2/1 P.187`193)

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@Go to this page TOP

2003


กกกConferenceกกก

Toshiyuki Sakai, Akihiko Machizawa, Shin-ichi Nakagawa
Jitter Characteristics of WLAN and Application to Distributed Measurement
The Institute of Electronics, Information and Communication Engineers(Vol.NS2003 No.161 P.71`74)

Yoshiaki Kitaguchi, Akihiko Machizawa, Shin-ichi Nakagawa, Michiaki Nishimura, Akira Hisako, Katsuya Hakozaki
A measurement and evaluation of the time accuracy on PC
The Institute of Electronics, Information and Communication Engineers(Vol.NS2003 No.160 P.67`70)

Akihiko Machizawa, Yoshiaki Kitaguchi
An analysis of Software time-stamping accuracy by Supercision Time-Stamper
The Institute of Electronics, Information and Communication Engineers(Vol.NS2003 No.159 P.63`66)

Yoshiaki Kitaguchi, Akihiko Machizawa, Masato Tsuru, Hiroyuki Fukuoka, Katsuya Hakozaki
Research of advanced time synchronous system with network support
2003 IEEE Pacific Rim Conference on Communications,Computers and Signal Processing(PACRIM '03)(P.1036`1039)

Yoshiaki Kitaguchi, Akihiko Machizawa, Masato Tsuru, Hiroyuki Fukuoka, Katsuya Hakozaki
The Stady of advanced time synchronous system with network support
DICOMO 2003(P.41`44)

กกกOral Presentationกกก

Kiyoshi Igarashi, Kazuyoshi Matsumoto, Kenji Tanaka, Akihiko Machizawa, Yasuichi Kitamura, Yutaka Kidawara
IP car race between JP and KR
The H-G/APII Joint Workshop


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