Disclosed is a magneto-optic recording/reproducing apparatus capable of detecting small size defects in a magneto-optic recording disk in the order of tens of microns in size, and capable of reliably compensating for signal defects of a video image recorded on the disk. In the apparatus first and second...http://www.google.com.tw/patents/US4951154?utm_source=gb-gplus-share專利 US4951154 - Magneto-optic recording/reproducing apparatus
