Optical memory having a parallel read out

Details Optical memory having a parallel read out Optical memory having a parallel read out

G - Physics

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G11B 7/00 (2006.01) G11B 7/005 (2006.01) G11B 7/09 (2006.01) G11B 7/125 (2006.01) G11B 7/14 (2006.01) H04N 5/76 (2006.01)

Patent

CA 1154162

- 1 - ABSTRACT OF THE DISCLOSURE The output beam of a read laser for an optical memory is diffracted to provide a plurality of read beams of substantially equal intensity for simultan- eously scanning all of the data tracks of a selected data channel with a different one of the read beams, whereby each of the read beams is optically modulated in accordance with the data recorded on a respective one of the data tracks. The optically modulated read beams are applied to respective detectors, whereby the data recorded on the different data tracks is simultaneously converted into corresponding video electrical signals. Those signals are, in turn, output selectively or in parallel.

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