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PATENT ABSTRACTS OF JAPAN 



(1 1 publication number : 2002-01 5507 

(43)Date of publication of application : 18.01.2002 



(51)Int.CI. 


61 IB 20/10 




G11B 7/006 




(21)Application number : 2000-199314 


(71)Applicant 


SONY CORP 


(22)Date of filing: 30.06.2000 


(72)Inventor : 


TADA HIDEFUMI 






TONE YASUO 



(54) METHOD FOR RECORDING DATA AND DISK DRIVE 

(57)Abstract: 

PROBLEM TO BE SOLVED: To correctly record data by 
preventing the data which is erased temporarily when 
the data are recorded from being lost. 
SOLUTION: When data recording and reproducing are 
performed in a physical sector unit, that is larger than a 
logical block in the case of recording the data on an 
optical disk 10 in a logical block unit, the data of a 
physical sector where a part of the data read in the 
physical sector unit are replaced with data to be 
recorded are read to a buffer memory 29. Data that 
cannot be replaced with the data to be recorded in the 
data of the memory 29 are copied to a nonvolatile 
memory 40. Record data in the physical sector unit are 
generated from the data of the memory 29 and the data 
to be recorded, and the record data are recorded by 
erasing data at the recording position on the disk 10 in 
the physical sector unit. Since the data temporarily 
erased from the disk 10 are stored in the memory 40, 
the data to be temporarily erased can be re-written in 
the disk 10, even if data recording operation is interrupted 




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