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(54) S S (Title) 
(19)(13) 

(11)g3HejS(Pub.No.)/^W 
(21)*SeiS(Appl.No.)/^» 

(21) 2aeaei£(Appi.No.)/ mx\ 

(51)^SI^SiSW(lnt. CI.) 
(51) IPC INDEX 



(57) 2 ^(Abstract) 



• (71) S 9 2J (Applicant) 
(72) ggXKInventors) 
'■■ (30) ^cd 2! & S(Priorty No.)/ a XI 



• JP A 



□HE 

(Representative Drawing) 



No Image 



20001 05980 (2000.04.1 1 ) 
1999260026 (1999.09.14) 
2003112111 

G 1 1 B 20/12; G1 1 B 7/004; G1 1 B 7/24; G1 1 B 20/1 8 



PROBLEM TO BE SOLVED; To enable data protection and increased recording capacity 
by managing a defective area with a file system without allocating a spare area on an 
optical recording medium. 

SOLUTION: When reproduction is selected, the host transfers a reproducing command to 
an optical disk recording/reproducing device. The device reads the data of the position 
specified by the host, transfers the read data to the host, and then transfers a command 
execution report to the host together with information concerning defects. The host, if 
discriminating defective area information is contained in the command execution report, 
transfers the data of the defective block to the recording/reproducing device together with 
a recording command. The device in turn records the data of the defective block at the 
position specified by the recording command. The position so specified is an arbitrary 
position in the data area. In preparation for subsequent rerecording or reproduction, the 
device records the positional information of the defective block at a prescribed position 
within the data area. COPYRIGHT: (C)2000,JPO 



LG ELECTRONICS INC 
ZON IN SHIN 

KR98 98401 44 (1 998.09.26) KR 



http://abroad.kipris.or.kr/abroad/VE/VEAB2040.jsp?mastkey=JP20000105980A0&cur... 2009-03-31 



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