Magneto-optic recording/reproducing apparatus

Details Magneto-optic recording/reproducing apparatus Magneto-optic recording/reproducing apparatus

1988-01-28

1990-08-21

McElheny, Jr., Donald

Facsimile and static presentation processing

Facsimile

Recording apparatus

H04N 585, H04N 594

Patent

active

049511548

ABSTRACT:
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 photodetectors are provided for detecting information signals of two luminous fluxes into which a luminous flux emitted from a laser oscillator is divided by light splitting means. The photodetectors are arranged on the part of light reflected or emitted by the surface of a magneto-optic recording medium when it is irradiated with the luminous flux from the laser oscillator. According to the invention, the signals produced by the photodetectors are processed to produce a highly sensitive defect signal or a plurality of highly sensitive defect signals which may be summed together.

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