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Research paper : How car navigation systems have been put into practical use (H. Ikeda et al.)−287−Synthesiology - English edition Vol.3 No.4 (2011) and Kunihiko Mito contributed to solving many problems involved in developing NAVS. We would like to express our thanks to Mr. Mito for his support in preparing this paper. We have promoted the development, commercialization, onboard installation, and other plans for the NAVS. However, the project turned out to be unsuccessful as a business, and we had no choice but to withdraw from the NAVS business. In conclusion, as the individuals responsible for the project, we would like to express our heartfelt regret for having caused a great deal of inconvenience to many involved parties over the period of the project.Honda Electro Gyro-CatorTM,240 Automotive technologies in Japan,http://www.jsae.or.jp/autotech/data/14-2.html (in Japanese)ITS - anzen, anshin, kaitekina kotsu shakai no jitsugen ni mukete (ITS -to realize comfortable traffic societies-), Matsushita Technical Journal, 51 (2), 84-89 (2005) (in Japanese).N. Oyama: Comprehensive automobile traffic control technique, Jidosya Gijutsu (Journal of Society of Automotive Engineers of Japan), 33 (4), 243-248 (1979) (in Japanese).Edited by National Police Agency: Car locator, White Paper on Police 1985,http://www.npa.go.jp/hakusyo/s60/s600101.html (in Japanese).J. Tanaka, K. Hirano and Y. Kobayashi: Navigation system using map matching method, SEI Technical Review, 136, 7-11 (1990) (in Japanese).A. Ooka, Y. Nishiura, K. Washimi, K. Okamoto, T. Iwashita, J. Yoshikawa and H. Hasegawa: Fiber optic gyroscope for car navigation system, SEI Technical Review, 140, 71-75 (1992) (in Japanese).T. Nakamura: Piezoelectric vibrating gyroscope, Denshi Joho Tsushin Gakkaishi (The Journal of the Institute of Electronics, Information and Communication Engineers), 76 (1), 39-41 (1993) (in Japanese).Home Page of Japan Digital Road Map Association: http://www.drm.jp/K. Fukuzawa: Sharyo kanchiki (Traffic sensors), Kotsu kogaku (Traffic Engineering), 17 (7), 46 (1982) (in Japanese).K. Takada: Road/automobile communication system, Jidosya Gijutsu (Journal of Society of Automotive Engineers of Japan), 43 (2), 58-64 (1989) (in Japanese).T. Usami: Integrated traffic control system, Kokusai Kotsu Anzen Gakkaishi (International Association of Traffic and Safety Sciences Review), 26 (2), 21-28 (2001) (in Japanese).Y. Miyata: Aiming at the comfortable road traffic -a challenge to VICS-, Jidosya Gijutsu (Journal of Society of Automotive Engineers of Japan), 11-17 (1993) (in Japanese).[1][2][3][4][5][6][7][8][9][10][11][12]ReferencesAuthorsHirosaka IkedaGraduated in 1964 from the Department of Applied Chemistry, Faculty of Engineering, Kyushu University. Joined Sumitomo Electric in 1964. Oversaw automotive wire harness development, vehicle electronics and NAVS. Took up the post of Managing Director in 1999, post of President at AutoNetworks Technologies, Ltd. in 1995 and moved in 2008 to the present post of Special-Appointment Professor at the Innovation Training Program Center for R&D and Business Leaders of Kyushu University. In this paper, Ikeda was in charge of the background to NAVS development, promotion, relationships with core technologies and management.Yoshinobu KobayashiGraduated in 1967 from the Division of Electrical Engineering, School of Engineering, Osaka University. Joined Sumitomo Electric in 1967. Worked on wiring harness electronics and NAVS development. Took the post of Manager, Automotive Electrical & Electronics Div. in 1999. Moved to the post of Executive Chief Engineer, AutoNetworks Technologies, Ltd. in 2000, then present post of temporary employee. In this paper, Kobayashi was in charge of hardware development. He strived to improve the profitability of the NAVS business and implement restructuring.Kazuo HiranoGraduated in 1974 from the Department of Applied Mathematics and Physics, Faculty of Engineering, Kyoto University. Joined Sumitomo Electric in 1974. Began to work on wiring harness electronics and NAVS development in 1981. Took the post of Manager, Automotive Electrical & Electronics Div. in 1996. Moved to the post of Deputy Director, Automotive Technologies Laboratories. and then to the present post of Manager, Strategic Planning Div., Automotive Business Unit. In this paper, Hirano was principally in charge of onboard NAVS software development and VICS construction.Discussions with Reviewers1 GeneralComment (Akira Kageyama, Research and Innovation Promotion Headquarters, AIST)The content of the paper is suitable for Synthesiology, as it concisely describes extensive elemental technologies used in car navigation systems (NAVS). The paper makes it clear that a wide range of technologies is required to launch a product to the market. At the same time, it describes what technologies are employed or dismissed in order to achieve a goal, and how a specific technology is combined with those in other fields. The paper is of great value in providing an example of corporate research and development management.

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