Digital signal forming method, disc recording media using the same, and reproducing method thereof

Abstract

There are provided a digital signal forming method, a disc recording medium for high density recording and a method of reproducing a digital signal for encoding of the error correction code of the related art and improving the error correction capability without any requirement in change of the number of codes. A plurality of correction blocks are formed by forming, a plurality of sector data adding the address information indicating the position on the recording disc to the main data of a plurality of lines in every constant amount of recording information, sharing the main data of each sector data into a plurality of sector data blocks and adding the first correction code to correct the error in the line direction of data and the second correction code to correct the error in the vertical direction of data to each of the divided sector data blocks. Moreover, a plurality of lines of the first correction codes corresponding to the main data of each line of each sector data interleaved to a plurality of correction blocks are allocated with continuation to a plurality of main data of each sector data and each line of a plurality of second correction codes is sequentially allocated among a plurality of sector data.

1 . A method for recording a digital signal on a recording medium comprising: 
 a step to form a plurality of main data by dividing a stream of recording information;    a step to form a plurality of data sectors, each data sector comprising address information indicating its position on a recording medium and the main data;    a step to divide the data sectors to produce a first sector data block with the address information and a second sector data block without the address information;    a step to form a first correction block comprising a plurality of the first sector data blocks and first correction codes for correcting errors in the vertical direction of data in the first sector data blocks;    a step to form a second correction block comprising a plurality of the second sector data blocks and second correction codes for correcting errors in the vertical direction of data in the second sector data blocks; and    a step to record the first correction block and the second correction block on the recording medium.    
   
   
       2 . A method for recording a digital signal on a recording medium as recited in  claim 1 , wherein the step to record comprises: 
 a step to position the first correction on an n th  line of the first correction block; and    a step to position the second correction codes on an m th  line of the second correction block.    
   
   
       3 . A method for recording a digital signal on a recording medium comprising: 
 a step to form a plurality of main data by dividing a stream of recording information;    a step to form a plurality of data sectors, each comprising address information indicating its position on a recording medium and the main data;    a step to divide the data sectors to produce a plurality of units;    a step to form a first sector data block comprising odd-numbered units in the data sectors;    a step to form a second sector data block comprising even-numbered units in the data sectors;    a step to form a first correction block comprising a plurality of the first sector data blocks and first correction codes for correcting errors in the vertical direction of data in the first sector data blocks;    a step to form a second correction block comprising a plurality of the second sector data blocks and second correction codes for correcting errors in the vertical direction of data in the second sector data blocks; and    a step to record the first correction block and the second correction block on the recording medium.    
   
   
       4 . A method for recording a digital signal on a recording medium as recited in  claim 3 , wherein the step to record comprises: 
 a step to position the first correction on an n th  line of the first correction block; and    a step to position the second correction codes on an m th  line of the second correction block.    
   
   
       5 . A recording medium on which a plurality of data sectors are recorded, wherein each data sector has address information indicating its position on a recording medium and main data obtained from a stream of recording information, each data sector formed by: 
 forming a first correction block comprising a plurality of first sector data blocks and first correction codes for correcting errors in the vertical direction of data in the first sector data blocks, wherein each first sector data block comprises a part of the data sector with the address information; and    forming a second correction block comprising a plurality of second sector data blocks and second correction codes for correcting errors in the vertical direction of data in the second sector data blocks, wherein the second sector data block comprises a part of the data sector without the address information.    
   
   
       6 . The recording medium of  claim 5 , wherein the first correction codes are positioned on an n th  line of the first correction block and the second correction codes are positioned on an m th  line of the second correction block.  
   
   
       7 . A recording medium on which a plurality of data sectors are recorded wherein each data sector includes address information indicating its position on a recording medium and main data obtained from a stream of recording information, each data sector formed by: 
 forming a first correction block comprising a plurality of first sector data blocks and first correction codes for correcting errors in the vertical direction of data in the first sector data blocks, wherein the first sector data block comprises odd-numbered units in the data sector; and    forming a second correction block comprising a plurality of second sector data blocks and second correction codes for correcting errors in the vertical direction of data in the second sector data blocks, wherein the second sector data block comprises even-numbered units in the data sector.    
   
   
       8 . The recording medium of  claim 7 , wherein the first correction codes are positioned on an n th  line of the first correction block and the second correction codes are positioned on an m th  line of the second correction block.  
   
   
       9 . A method for reproducing a stream of recording information from a digital signal recorded on a recording medium, the digital signal being recorded on the recording medium in accordance with the method of  claim 1 , the method for reproducing comprising: 
 a step to output a plurality of the first correction blocks and a plurality of the second correction blocks from the recording medium;    a step to correct errors in the vertical direction of data in the first correction blocks using the first correction codes;    a step to correct errors in the vertical direction of data in the second correction blocks using the second correction codes; and    a step to produce the stream of recording information from the first correction block and the second correction block.    
   
   
       10 . A method for reproducing a stream of recording information from a digital signal recorded on a recording medium, the digital signal being recorded on the recording medium in accordance with the method of  claim 3 , the method for reproducing comprising: 
 a step to output a plurality of the first correction blocks and a plurality of the second correction blocks from the recording medium;    a step to correct errors in the vertical direction of data in the first correction blocks using the first correction codes;    a step to correct errors in the vertical direction of data in the second correction blocks using the second correction codes; and    a step to produce the stream of recording information from the first correction block and the second correction block.