Recording medium, data recording method and apparatus, data regenerating method and apparatus, and copy control method

Abstract

Data is recorded in a first part PA 1 in accordance with a signal format same as that of an existing CD at the lower limit (1.5 μm) of an allowable value of a track pitch and the lower limit (1.2 m/sec) of a linear velocity. As a result, the data for the maximum regeneration time (74.7 min) can be recorded in the first part PA 1 . An existing CD reproducing apparatus can reproduce the audio data recorded in the first part PA 1 with no problem. Moreover, compressed and encrypted audio data is recorded in a second part PA 2 at a single density or a double density. The single density represents a recording density same as that of an existing CD and the double density represents a density two time larger than the single density. Furthermore, the audio data recorded in the second part PA 2 is charged when reproduced in order to protect copyrights. The format of the data recorded in the second part PA 2 uses the format of a CD-ROM.

1 - 52 . (canceled)  
   
   
       53 . A discoid-recording-medium reproducing apparatus comprising: 
 a head for reading data and collateral information from a discoid recording medium that is provided with at least a first lead-in area; a first recording area that is formed at an outer-track side of said first lead-in area and in which uncompressed data are recorded; a first lead-out area formed at said outer-track side of said first recording area; a second lead-in area formed at said outer-track side of said first lead-out area; a second recording area that is formed at said outer-track side of said second lead-in area and in which compressed data are recorded; and a second lead-out area formed at said outer-track side of said second recording area in which identification information showing whether said second recording area is present and collateral information including at least start and end addresses of said first and said second recording areas are recorded;    a first regeneration part to which an output signal is supplied from said head and that reproduces said uncompressed data read from said first recording area on said recording medium;    a second regeneration part to which said output signal is supplied from said head and that reproduces said compressed data read from said second recording area on said recording medium; and    a control part to which said output signal is supplied from said head and that changes said first regeneration part and said second regeneration part in accordance with said collateral information.    
   
   
       54 . The discoid-recording-medium reproducing apparatus according to  claim 53 , wherein said control part controls movement of said head in accordance with said collateral information read from said recording medium.  
   
   
       55 . The discoid-recording-medium reproducing apparatus according to  claim 53 , wherein said discoid recording medium is set to said apparatus and further comprising a rotating part for rotating said set discoid recording medium; and said rotating part is controlled by said control part so as to change linear velocities when said head is moved from either of said first and said second recording areas of said recording medium to an other recording area of said recording medium.  
   
   
       56 . The discoid-recording-medium reproducing apparatus according to  claim 55 , wherein a mirror area is further formed between said first lead-out area and said second lead-in area of said recording medium and said control part controls said rotating part so as to change said linear velocities while said head passes through said mirror area.  
   
   
       57 . A discoid-recording-medium reproducing method, comprising the steps of: 
 reading data and collateral information by a head from a discoid recording medium that is provided with at least a first lead-in area, wherein a first recording area is formed at an outer-track side of said first lead-in area in which uncompressed data are recorded; a first lead-out area is formed at said outer-track side of said first recording area; a second lead-in area is formed at said outer-track side of said first lead-out area; a second recording area is formed at said outer-track side of said second lead-in area in which compressed data are recorded and a second lead-out area is formed at said outer-track side of said second recording area in which identification information showing whether said second recording area is present and collateral information including at least start and end addresses of said first and second recording areas are recorded; and    changing a first regeneration part to which an output signal is supplied from said head and that reproduces said uncompressed data read from said first recording area on said recording medium and a second regeneration part to which said output signal is supplied from said head and that reproduces said compressed data read from said second recording area on said recording medium in accordance with said collateral information read by said head.    
   
   
       58 . The discoid-recording-medium reproducing method according to  claim 57 , wherein said method controls a rotational speed of said discoid recording medium to change linear velocities when said head is moved from either of said first and said second recording areas to an other recording area.  
   
   
       59 . The discoid-recording-medium reproducing method according to  claim 58 , wherein said recording medium has a mirror area between said first lead-out area and said second lead-in area and said rotational speed of said discoid recording medium is changed when said head passes through said mirror area.  
   
   
       60 . The discoid-recording-medium reproducing method according to  claim 57 , wherein said collateral information includes fee charging information showing whether said data recorded in said recording medium are data to be charged and charging is performed in accordance with said fee charging information when reproducing said compressed data recorded in said second recording area.  
   
   
       61 . The discoid-recording-medium reproducing method according to  claim 60 , wherein said method determines whether said compressed data to be reproduced have contents identical to said uncompressed data recorded in said first recording area and reproduces said compressed data to be reproduced without charging a fee when said determination result shows that said compressed data have said identical contents.  
   
   
       62 . The discoid-recording-medium reproducing method according to  claim 61 , wherein when it is determined that said compressed data to be reproduced do not have said identical contents as said uncompressed data recorded in said first recording area a fee is charged and said compressed data are then reproduced.  
   
   
       63 . The discoid-recording-medium reproducing method according to  claim 62 , wherein said collateral information further includes said information showing an area in which data having said identical contents as said uncompressed data recorded in said first recording area and said method determines in accordance with said collateral information whether said compressed data to be reproduced has said identical contents as said uncompressed data recorded in said first recording area.  
   
   
       64 - 84 . (canceled)