| 摘要 |
<p>PURPOSE:To prevent the destruction of recording data owing to the occurrence of a sub-code error by providing a prescribed gap at every prescribed data quantity and switching a gap part to a reproduction mode at the time of an after-recording operation. CONSTITUTION:At the time of after-recording the operation mode of frames No-3 to -1 and 28 in a gap area is set to be the reproduction mode, and only frames No0-27 in a data area are set to be an after-recording mode. A system micro computer (SYSM) 6 discriminates the frame number of sub-code data of reproduction data (PDATA) inputted to a reproduction system signal processing part (PLC) 4, and it gives the instruction of switching the operation mode. The start of the after-recording mode is judged by the frame number and group number of sub-code data. Then SYSM 6 counts the number of frames which have executed after-recording and when after-recording is executed for 28 frames, a system is switched to the reproduction mode.</p> |
