G - Physics – 11 – B
Patent
G - Physics
11
B
352/32.2
G11B 27/00 (2006.01) G11B 7/004 (2006.01) G11B 7/125 (2006.01) G11B 11/105 (2006.01)
Patent
CA 2027153
The optical recording/reproducing device of the present invention has an AGC circuit that emits an AGC voltage to be used for controlling the amplification of a reproduced signal in accordance with the amplitude of the reproduced signal, and a controller where permissible ranges for the AGC voltage value is set for recording operation, for erasing operation and for reproduction operation, that, when an optical recording medium is loaded and when one of the recording operation, erasing operation or reproduction operation is instructed, compares the AGC voltage with the permissible range corresponding to the instructed operation and determines whether the AGC voltage is comprised within the permissible range for the instructed operation, and that sets the conditions for the instructed operation for each optical recording medium being loaded in the device. Reproduction/recording/erasing operations may be thus accurately executed in accordance with the characteristics of the recording medium being loaded in the device.
Deguchi Toshihisa
Fuji Hiroshi
G. Ronald Bell & Associates
Sharp Kabushiki Kaisha
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