Method and Recorder for Reducing Rejection of Record Carriers Due to Write Errors

Abstract

When writing on a recordable medium the recorder can encounter write errors. When a write error occurrs the record carrier is discarded. By ignoring write errors in sections of the record carrier comprising unused information, for instance sections of the lead-in or lead-out the record carrier no longer needs to be discarded.

1 . Method for recording information on a record carrier in response to a format command or a close track session command comprising the steps of
 receiving a format command or a close track session command   writing data blocks in response to the format command or close track session command   
     characterized in that if a write error occurs in response to the format command or close track session command in a data block comprising unused information the write error is ignored. 
   
   
       2 . Method as claimed in  claim 1 , characterized in that when the write error is ignored no error is reported 
   
   
       3 . Method as claimed in  claim 1 , characterized in that the data block comprising unused information is comprised in a lead-in or a lead-out. 
   
   
       4 . Method as claimed in  claim 3 , characterized in that the unused information is a reserved block. 
   
   
       5 . Method as claimed in  claim 1 , characterized in that the unused information is comprised in a data area and that the unused information comprises a data block filled with all zeros 
   
   
       6 . Method as claimed in  claim 1 , characterized in that the record carrier is a write once record carrier and the unused information is not comprised in an inner-disc count zone, or in a recorded area indicator, or in a control data block, or in a table of contents, or in a SDBC, or in a session control data or an outer disc administration zone 
   
   
       7 . Method as claimed in  claim 1 , characterized in that the record carrier is a rewriteable record carrier and the unused information is not comprised in an inner disc identification zone or in a control data zone or in an outer disc identification zone. 
   
   
       8 . Recorder for recording information on a record carrier in response to a format command or a close track session command comprising a processor coupled to an interface for receiving a format command or a close track session command through the interface and coupled to writing means for writing data blocks in response to the format command or close track session command
 characterized in that the processor is operative to ignore an error when an error occurs while writing data blocks in response to the format command or close track session command in a data block comprising unused information.   
   
   
       9 . Recorder as claimed in  claim 8 , characterized in that when an error is ignored the processor is operative to suppress an error report 
   
   
       10 . Recorder as claimed in  claim 8 , characterized in that the data block comprising unused information is comprised in a lead-in or a lead-out. 
   
   
       11 . Recorder as claimed in  claim 10 , charecterized in that the unused information is a reserved block. 
   
   
       12 . Recorder as claimed in  claim 8 , charecterized in that the unused information is comprised in a data area and that the unused information comprises a data block filled with all zeros 
   
   
       13 . Recorder as claimed in  claim 8 , characterized in that the record carrier is a write once record carrier and the unused information is not comprised in an inner-disc count zone, or in a recorded area indicator, or in a control data block, or in a table of contents, or in a SDBC, or in a session control data or an outer disc administration zone 
   
   
       14 . Recorder as claimed in  claim 8 , characterized in that the record carrier is a rewriteable record carrier and the unused information is not comprised in an inner disc identification zone or in a control data zone or in an outer disc identification zone.