System for the optical read-out by reflection of a data carrier

Details System for the optical read-out by reflection of a data carrier System for the optical read-out by reflection of a data carrier

1976-05-28

1979-03-06

Cardillo, Jr., Raymond F.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

1791003V, H04N 576, G11B 712

Patent

active

041434021

ABSTRACT:
The present invention relates to systems for the optical read-out, by reflection, of a data carrier. The present invention provides a read-out system in which two spots are projected which straddle the track being read-out. This method of projection makes use of a projection objective lens associated with an optical deflecting element in the form of a prism or a plate with parallel faces. The beam illuminating the track is split into two halves by a plane section containing the optical axis of the objective lens. The invention may be used for reading out data carriers upon which television signals are recorded.

REFERENCES:
patent: 3596101 (1971-07-01), Someya
patent: 3876841 (1975-04-01), Kramer et al.
patent: 3969576 (1976-07-01), Boonstra
patent: 3971002 (1976-07-01), Bricot et al.

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