Vol.11 no.3 2019

Commentary : Contributing to the SpaceWire international standard (H. HIHARA et al.)−157−Synthesiology - English edition Vol.11 No.3 (2018) in explicitly utilizing diversity.USA has diversity within itself, and it is conscious that achievement can be attained through different viewpoints and is clearly aware that diversity is the source of their strength. Japan has diversity within its country, but I feel there is no place to share the achievements that arise through diversity.Question (Motoyuki Akamatsu)You explain that it was not easy to incorporate the Japanese proprietary standard into the international standard, but please explain why it was not easy.Answer (Hiroki Hihara)On the point that you indicated, I think the main reason was motivation, and I added this in the text.7 Joint research with universities and standardizationQuestion (Motoyuki Akamatsu)You write about the concurrent schedule, and I understood that the point here is that you constructed the design guideline through joint research in addition to the orbital demonstration. Was this joint research part of the scenario that aimed to take this to international standardization? If so, based on what decision was this joint research conducted?Answer (Hiroki Hihara)Looking back over the joint research, I think Professor Takahashi, who was the project manager of “Hitomi” project, was knowledgeable about the European culture that placed emphasis on formal and logical verication. I am now aware that he worked on the government-industry-academia joint research plan to prepare the specications based on empirical knowledge into a form that was acceptable in Europe, and in this joint R&D, he constructed the guideline that made possible the scrutiny of European way of thinking that placed importance on logical (formal) verication. I added this point to the text.8 Future contributionQuestion (Akira Ono)This article describes a case in which Japan contributed greatly to the creation of an international standard for space technology. What is the most important point if Japan wishes to continue such contribution in the future? It can be on general technology other than space technology.Answer (Hiroki Hihara)Looking back at the process of SpaceWire standard establishment, I think the most important thing in the future is the will to work not only on preceding examples but also on diversity. There are two reasons for this as follows.First, with the thought of so-called “kaizen,” rather than the mind of competition that starts by negating the existing results, it was found that we could contribute to the establishment of international standard by respecting the existing results. This originates from the fact that the PDCA cycle can be turned quickly because we have a culture of unity where there is no hierarchy between the side that establishes the specs and the side that uses the specs.Next, the kaizen method starts from the fact that there is a preceding case. With the improvement of the technological level in Japan, it has become difcult to nd a precedent. In the future, we can keep the preceding cases in view by eliminating the idea of advanced versus developing countries, or new versus old technologies, and changing the awareness to capturing the precedents through expression of diversity.From these reasons, diversity should be considered as precedents, should be respected, and should have kaizen applied. Then we can coexist with the values of competition of Europe and USA and shall be able to continuously contribute to international standard establishment.

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