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► (54) SS (Title) 

► (19)(13)?S 

► (11)g3Hffl£(Pub.No.)/SI» 

► (21)SSS!S(Appl.No.)/a» 

► (51)^H*8IS#(lnt.CL) 

► (51) IPC INDEX 



OPTICAL INFORMATION RECORDER/REPRODUCER 



► (57) fi2f (Abstract) 



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(Representative Drawing) 



1995121993(1995.05.12) 
1993263545(1993.10.21) 
G11B 20/12; G11B 11/10; G11B 20/10 




PURPOSE: To obtain reliability of preserving data even if there is initial defect at a 
position for recording defect information such as first defect list (PDL), second defect list 
(SDL), etc., of a magneto-optic disk. CONSTITUTION: Each control system of a driver 
system 6 is controlled based on a command of a host computer 14, and a defect of a 
DMA area of a disk surface is inspected by emitting a laser light L from an optical pickup 
3 to the disk surface at the time of formatting a magneto-optic disk 1 . When a defect 
sector is detected, a recording position of the list is set by avoiding the defect sector, and 
when a plurality of defect sectors are detected, its defect sector information is 
continuously recorded at a set recording position of the defect list. COPYRIGHT: (C) 
1995.JPO 



, » (71) gSiei (Applicant) 
; > (72rSfa»(lnventors) 
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[0 0 5 0] CO«fe9fCLT, 7*- Vy bBfSCDMA 
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[0052] cvnmmvft&tiifflmmtmuxiz, 

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[0 0 5 6]-^ *»««»ntf*0^«-b^5r«R« 
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[0 0 5 7] 06«DMAffii|crtO^P(S-tr^^*fRtfL 
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[0 0 5 9] £<0&5lCLX, 7*-V>y hB#(CDMA 
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(10) 



$fM¥07-121993 



PDL, S D LOf-*OfiSOifitt*iJ!)6n5. 
Sfc, fc»©fcS***©#*r-*ffiSMftBfr&RiK 

[0 0 6 0] co»B©»33lB8IHWK:ov^TKW 

[00 6 1] C4»femiffi»f!££«& ftSBJaT-r 
X^KDifBl, *07V**iB0DMAllWrt*fclB 

mlt, DMAiWKrt-e^-ec^PB-fe^^ilWBWEa 
[0 0 6 2] H7ttc©3t¥«*ESII^Bi«K:*^* 

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[0 0 6 5] laSfC^ri^C, g0-fe**fCttDDS 
(0* TDJ T'^-T) t>\ £l~3Hr**t«:{iWett 

PDL(H«frpij rp2j rp3j xmt) t>\ fg 
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r) tofc-rso 

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[0 0 6 7] £©<};? ICLT, *7 ! 4T*3&S+&1tXf 
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(11) 



#^¥07-121993 



[0 0 7 4] $fc, 3t^1S«ie»JSft©7*-Vy M$ 

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mm. ©DMA««rtTH»c>j»-b*^iiHfcWESsn 

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(12) 



WM¥07-121993 



[01] 




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(13) 



#$¥07-121993 



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[07] 




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( » T ) 



[08] 



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(15) 



^^¥07-121993 




5 DL,SDLS ^>^N 



D D S , P D L, 

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0 

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9996 
9997 

9999 

10000 

10001 
10015 



A77r h 7 ? 7 



DMA 1 (R/W) 



DMA 2 (R/W) 



(R/W) 



DMA 3 (R/W) 

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DMA 4 (R/W) 



My 77 h? i y^ 



Ay 7 7 h9y7 



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(R/W) 



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DMA 2 



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DMA 4 



Ay 7 7 V<3v 7 



(a) 



(b) 



(c) 



(16) 



#$¥07-121993 



[01 3] 



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9996 




9997 


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SDL | 






9998 


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9999