OPTICAL DISK DEVICE

• Main Author: NAKANE HIROSHI
• Format: Patent
• Language: English
• Published: 11.01.2007
• Subjects: INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; PHYSICS

PROBLEM TO BE SOLVED: To provide an optical disk device which can accurately compensate variations of sensitivity. SOLUTION: An optical disk device has; a focus servo control unit having a focus detection means which detects a focal point of a beam spot based on a signal read from an optical disk th...