Optical disk drive, and method for identifying optical disks mounted thereto

(19)

(11)

EP 1 191 529 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	11.12.2002 Bulletin 2002/50

(43)	Date of publication A2:
	27.03.2002 Bulletin 2002/13

(21)	Application number: 01307941.3

(22)	Date of filing: 18.09.2001

(51)	Int. Cl.⁷: G11B 19/12

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

22.09.2000 JP 2000289348

(71)	Applicant: SONY CORPORATION
	Tokyo 141 (JP)

(72)	Inventor:
	Ogihara, Koichiro Shinagawa-ku, Tokyo 141 (JP)

(74)	Representative: Robinson, Nigel Alexander Julian et al
	D. Young & Co., 21 New Fetter Lane London EC4A 1DA London EC4A 1DA (GB)

(54)	Optical disk drive, and method for identifying optical disks mounted thereto

(57) An optical disk drive comprising:

wobble signal reproduction means for reproducing, in the state where each of mounted optical disks is rotated at a predetermined rotation speed, a signal corresponding to groove wobbles from a predetermined position in a radial direction of the optical disk, plural filter means for extracting each of plural frequency components corresponding to the frequencies of the groove wobbles of the plural kinds of recording-capable optical disks; and
disk identification means for identifying a kind of the mounted optical disk, based on the output signals from the plural filter means.