G - Physics – 11 – B
Patent
G - Physics
11
B
352/33.3
G11B 20/18 (2006.01) G11B 7/00 (2006.01) G11B 7/0045 (2006.01) G11B 7/007 (2006.01) G11B 7/013 (2006.01)
Patent
CA 1316600
ABSTRACT OF THE DISCLOSURE A recording and reproducing device providing control data recording area on erasable type optical recording medium wherein control data are recorded thereof, character- ized in that there are provided control data recording area forming means for forming control data recording area com- prising more than two control recording blocks where more than one record unit are composed and said control data can be recorded independently, and control data updating means for recording a new control data in the control data record- ing blocks excepting the one where the control data just prior to updating was recorded, when updating the control data in said control data recording area. Even though device electric power supply may unexpect- edly fail, this device is structured to minimize damage caused by such a failure.
597186
Deguchi Toshihisa
Fujiwara Tsuneo
Iwaki Takashi
Maeda Shigemi
Terashima Shigeo
G. Ronald Bell & Associates
Sharp Kabushiki Kaisha
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