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Dive into the research topics where Kenji Nagatomi is active.

Publication


Featured researches published by Kenji Nagatomi.


international conference on consumer electronics | 2006

A smart model HD DVD/DVD/CD compatible pickup head

Kenji Nagatomi; Masahito Ogata; Kenji Asano; Yoichi Tsuchiya; Yasuyuki Bessho

We have proposed a compatible pickup for HD DVD/DVD/CD systems, which uses a blue/red/IR multi beam laser unit and a single sensor unit. The optical path of the DVD system is aligned to that of the HD DVD system to share one sensor area. Experimental results confirm the practicality of the proposed pickup


international conference on consumer electronics | 2005

Three wavelength compatible pickup

Kenji Nagatomi; M. Ogata; S. Kajijyama; Yoichi Tsuchiya; Y. Bessyo

We have proposed a compatible pickup for HD DVD/DVD/CD systems, which uses a blue/red multibeam laser unit and an IR LD (infrared laser diode) chip. The optical path of the DVD system is aligned to that of HD DVD system to share one sensor. Experimental results confirm the practicality of the proposed pickup.


IEEE Transactions on Consumer Electronics | 2005

Three wavelength compatible pickup with blue/red multi-beam laser unit

Kenji Nagatomi; M. Ogata; S. Kajijyama; Yoichi Tsuchiya; Y. Bessyo

We have proposed a compatible pickup for HD DVD/DVD/CD systems, which uses a blue/red multi-beam laser unit and an IR-LD (infra-red laser diode) chip. The optical path of the DVD system is aligned to that of the HD DVD system to share one sensor. Experimental results confirm the practicality of the proposed pickup.


Archive | 2009

Recording medium, and recording and reproducing apparatus

Morio Nakatani; Kenji Nagatomi; Yoshiyuki Matsumura; Seiichiro Takahashi


Archive | 2006

Semiconductor laser apparatus, method of manufacturing semiconductor laser apparatus, and optical pickup apparatus

Masayuki Hata; Yasuyuki Bessho; Yasuhiko Nomura; Masayuki Shono; Kenji Nagatomi; Yoichi Tsuchiya


Archive | 2008

OPTICAL PICKUP DEVICE AND OPTICAL DISK APPARATUS

Kenji Nagatomi; Yasuyuki Kano


Archive | 2008

Recording medium, optical pickup device and recording/reproducing device

Morio Nakatani; Kenji Nagatomi; Yoshiyuki Matsumura; Seiichiro Takahashi


Archive | 2009

RECORDING MEDIUM, OPTICAL DEVICE, AND RECORDING AND REPRODUCING APPARATUS

Morio Nakatani; Kenji Nagatomi; Yoshiyuki Matsumura; Seiichiro Takahashi


Archive | 2009

Optical pickup apparatus, focal-point adjusting method, and optical disc apparatus

Kenji Nagatomi; Katsutoshi Hibino


Archive | 2009

Optical pickup apparatus and focal-point adjusting method

Kenji Nagatomi

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