Inventor

TSUKAMOTO SYUJI

JP11 patents

Patents

11 patents

US6611484B2Aug 26, 2003

Optical recording medium and method

TDK CORP15 citations82

US7102969B2Sep 5, 2006

Multi-level optical recording medium reproducing method and reproducing device

TDK CORP10 citations73

US6891790B2May 10, 2005

Optical recording medium, optical recording device and optical recording method

TDK CORP8 citations72

US7221637B2May 22, 2007

Multi-level optical recording medium, multi-level recording method, and multi-level reproduction method

TDK CORP4 citations61

US7082088B2Jul 25, 2006

Optical recording medium and optical recording method by irradiation

TDK CORP5 citations61

US7042824B2May 9, 2006

Optical multi-level recording medium and optical multi-level recording method

TDK CORP4 citations61

US7012870B2Mar 14, 2006

Optical recording method, optical recording medium and optical irradiating time controlling device

TDK CORP4 citations61

US6956804B2Oct 18, 2005

Optical recording medium with recording marks having different states, and method of recording using the optical recording medium

TDK CORP2 citations61

US6699557B2Mar 2, 2004

Optical recording medium and optical recording method

TDK CORP6 citations61

US7022393B2Apr 4, 2006

Optical recording medium

TDK CORP0 citations51

US7193949B2Mar 20, 2007

Method for recording data on optical recording medium, device for recording data on optical recording medium, and optical recording medium

TDK CORP0 citations39