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An Erasable CD Compatible Magneto-Optical Disc Recorder

By employing the new and unique technology of magneto-optical materials, we have developed an erasable digital audio disk recorder which is compatible with existing CD players. This reorder/player which uses a 120-mm pregrooved disk contains a CD-compatible optical head assembly, a disk-driving unit, and a digital signal processor. Our testing of the unit has yielded the following performance data: The audio signal level characteristics are exactly the same as those for conventional CD players, the bit error rate is in the order of 10-5, and the signal-to-noise ratio is greater that 50 dB. In this paper, we will present the fundamental construction and functional highlights of this system.

Authors: Kikuchi, N.; Kurahashi, A.; Nakamura, T.; Shimizu, T.; Fukai, M.
Affiliation: Matsushita Electric Ind. Co., Ltd., Osaka, Japan
AES Convention:76 (October 1984) Paper Number:2131 Import into BibTeX
Subject:Audio Media

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