Equipment for the optical playback of analog phonographic records
AssigneeInstitut National de l'Audiovisuel-INA
InventorLouis Laborelli
Life of this patent
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Abstract
This invention relates to equipment for the optical playback of sound media which includes resources (1) that has engraves grooves, (3, 9) for generating at least one light beam that presents a light spectrum variation according to its incidence angle on an area of the sound media and an image sensor (7) placed so that it recovers the light reflected by said area of the sound media.
Claims20
Equipment for the optical playback of a sound media presenting a groove engraving, comprising:
- generation resources of at least one light beam configured to be reflected by an area of the sound media, and
- an image sensor placed in such a manner as to capture the light reflected by said area of the sound media, wherein said light beam presents a spectrum variation according to said light beam's incidence angle on said area of the sound media.
Equipment for the optical playback of a sound media presenting a groove engraving, comprising:
- a light beam positioned to be reflected by an area of the sound media, and
- an image sensor placed to capture the light from said light beam reflected by said area of the sound media, wherein,
- said reflected light beam presents to said image sensor a spectrum variation according to the light beam's incidence angle on said area of the sound media, and
- the image sensor comprises a multi-spectral camera.
Equipment for the optical playback of a sound media presenting a groove engraving, comprising:
- a light beam positioned to be reflected by an area of the sound media, and
- a multi-spectral image sensor placed to capture the light from said light beam reflected by said area of the sound media,
- wherein said reflected light beam presents to said image sensor a spectrum variation according to the light beam's incidence angle on said area of the sound media.
Dependencies are inferred from the claim text.