Optical read-out audio check disc with semitransparent...

Details Optical read-out audio check disc with semitransparent... Optical read-out audio check disc with semitransparent...

G - Physics

11

B

354/222, 352/32

G11B 23/30 (2006.01) G11B 20/18 (2006.01)

Patent

CA 2018168

A check disc on which a single frequency signal is recorded on a check point next to an information signal of each track number and simulated defects such that the reproduction signal obtained by reproducing the disc becomes a defect signal in the case where defects occur on the disc are provided on the check point.

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