G - Physics – 11 – B
Patent
G - Physics
11
B
352/32.1, 352/33
G11B 11/10 (2006.01) G11B 7/00 (2006.01) G11B 7/0037 (2006.01) G11B 7/007 (2006.01) G11B 11/105 (2006.01) G11B 19/04 (2006.01) G11B 20/00 (2006.01) G11B 20/10 (2006.01) G11B 20/12 (2006.01) G11B 20/18 (2006.01) G11B 27/036 (2006.01) G11B 27/038 (2006.01) G11B 27/10 (2006.01) G11B 27/11 (2006.01) G11B 27/30 (2006.01) G11B 27/32 (2006.01) G11B 27/34 (2006.01) G11B 27/36 (2006.01) G11B 27/034 (2006.01)
Patent
CA 2020059
A disk recording and reproducing device records on, and reproduces information from, a magneto-optical disk having absolute addresses and including an information recording area wherein pieces of information entered from external devices are recorded, and a TOC area wherein additional information with respect to each piece of the information recorded in the information recording area is recorded. The device includes operation keys for being operated by the user, a TOC memory for storing therein read/write control information for desired pieces of information entered through the operation keys, an optical head and a magnetic coil for recording in the TOC area the contents stored in the TOC memory and a controller for controlling read/write control information. With the arrangement, the user can recognize necessary/unnecessary information and defective parts of the disk, and therefore make effective use thereof. The device also includes a peak level detection circuit for detecting peak levels of music information. This peak level information is stored in the TOC memory and recorded in the TOC area of the disk, thereby permitting the user to readily perform a preferable copying operation. In addition, the device includes memory means wherein an absolute address corresponding to the time when an operation key is operated to initiate recording is stored, and optical head drive control means for moving the optical head to a vicinity of a position indicated by the absolute address stored in the memory means.
Deguchi Toshihisa
Ishikawa Toshio
Maeda Shigemi
Terashima Shigeo
G. Ronald Bell & Associates
Sharp Kabushiki Kaisha
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