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Publication number: JP2001 266464 A2 

Publication country: JAPAN 

Publication type: APPLICATION 

Publication date: 20010928 

Application number: JP20000077509 



Application date: 

Priority: 

Assignee: 

Assignee std : 

Inventor 5 * 1 : 



20000321 

JP20000077509 20000321 ; 
NIPPON COLUMBIA CO LTD ; 
NIPPON COLUMBIA; 
IKEDA TAKESHI ; 



International class 1 " 7 : G1 1 B1 9/04 ; G1 1 B7/004 ; G1 1 B1 9/02 ; G1 1 B20/1 0 ; G1 1 B20/12 ; 
G11B20/18; 



International class 8 : 



Title: 
Abstract: 



G11B20/1 0 20060101 I C ; G11B20/10 20060101 I A ; G1 1 B7/00 20060101 I 
C ; G1 1 B7/00 200601 01 I A ; G1 1 B1 9/02 200601 01 I C ; G1 1 B1 9/02 
20060101 I A; G1 1B1 9/04 200601 01 I C;G11B1 9/04 20060101 I A; 
G11B20/12 20060101 I C ; G1 1 B20/12 20060101 I A ; G11B20/18 20060101 
IC;G11B20/18 20060101 I A; 

DATA RECORDING AND REPRODUCING UNIT 

PROBLEM TO BE SOLVED: To discharge a recording medium before the 
number of defective sectors of the recording medium exceeds the number of 
replaceable sectors of a spare region. SOLUTION: This device has a main 
recording section which records the data to be inputted, an auxiliary recording 
section which records the data of the main recording section to the attachable 
and detachable recording medium, a counter section for the number of the 
initial defective sectors for counting the number of the initial defective sectors, 
a counter section for the number of the defective blocks for counting the 
number of the defective blocks detected during the recording of the data to 
the recording medium, a control section and a display section. The control 
section totals the number of the defective sectors outputted from the counter 
section for the number of the initial defective sectors and the number of the 
defective blocks outputted from the counter section for the number of the 
defective blocks and dischargers the recording medium by controlling the 
display section so as to display the effect that the recording medium is no 
usable on the display section when the totaled number exceeds a preset 
value. 



http://lookup.patentorder.com/viewtext.asp?PN=JP2001266464_A2&id=15879433 



9/1/2009 



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