Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1975-09-11
1981-10-13
Cardillo, Jr., Raymond F.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
369 50, 369103, 369111, 369121, 369275, 369279, H04N 586, G11B 712, G11B 1702
Patent
active
042951623
ABSTRACT:
A holographic video disc system is described in which the baseband information for successive horizontal television line intervals is recorded as successive holograms of one-dimensional line images in a spiral track on the surface of a disc of material. A spiral guiding track is also formed in the surface of the disc immediately adjacent to the spiral track of holograms. The recording system includes a laser beam which is modulated with the baseband video information. The beam is divided into a reference beam and a data beam. A beam deflector scans the data beam through a chosen angle at the horizontal television sweep rate, while the reference beam is unaffected. The reference beam and data beam are intersected at the surface of a record medium and form a surface relief hologram on that surface. Since the data beam is being scanned at the horizontal sweep rate, one-dimensional line images, each of which contains the baseband video information for one horizontal television line interval, are holographically recorded. The record medium is rotated relative to the data beam and reference beam so that a spiral track containing a plurality of the holograms of one-dimensional line images is formed in the surface. During a playback, the location of the spiral guiding track is sensed and one of the hologram forming beams is duplicated thereby reconstructing the other. The reconstructed beam is detected and the baseband video information removed therefrom for application to a standard television receiver.
REFERENCES:
patent: 4021606 (1977-05-01), Takeda et al.
patent: 4025731 (1977-05-01), Rembault
Cardillo, Jr. Raymond F.
Fisher Fred
GTE Laboratories Incorporated
LandOfFree
Reading one-dimensional line image holograms of a video from a d does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reading one-dimensional line image holograms of a video from a d, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reading one-dimensional line image holograms of a video from a d will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-934123