| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve response of recording operation directly after start of a power source or directly after loading of a recording medium in a data recording and reproducing apparatus having a high edition property for a large capacity recording medium. <P>SOLUTION: This apparatus is provided with a track ciphering information memory 3a for reading which develops newly control data of track ciphering information or the like in a data recording and reproducing apparatus, a ciphering processing part 4 ciphering new recording data such as music data or the like inputted externally, and a track ciphering information memory 3b for write-in which stores ciphering information generated when ciphering is performed by the ciphering processing part 4. When recording operation is performed, the ciphering information about contents data being recorded is developed in the ciphering information memory (ciphering data developing region) 3a for reading, ciphering data information of the new recording data made on the track ciphering information memory 3b for write-in is merged with a ciphering information table of a contents data unit and rewritten in the disk after recording operation is finished. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
