Three wavelength compatible pickup with blue/red multi-beam laser unit. - Kenji Nagatomi; Masahito Ogata; Seiji Kajijyama; Yoichi Tsuchiya; Yasuyuki Bessho (IEEE Trans. Consumer Electron., 2005)

A smart model HD DVD/DVD/CD compatible pickup head. - Kenji Nagatomi; Masahito Ogata; Kenji Asano; Yoichi Tsuchiya; Yasuyuki Bessho (IEEE Trans. Consumer Electron., 2006)