Optics: motion pictures – With sound accompaniment – Sound allocation
Patent
1995-06-07
1998-05-26
Metjahic, Safet
Optics: motion pictures
With sound accompaniment
Sound allocation
352 27, 352 37, G03B 3102, G03B 3100
Patent
active
057574650
ABSTRACT:
A storage medium carries physically distinct blocks of symbols representing digital information. The symbols are arranged in the blocks such that the digital information represented by the symbols can be determined from only the two-dimensional position of the symbols relative to one another and any other differentiable characteristic intrinsic to the symbols. A method and apparatus recovers the symbols using oversampling in two dimensions and derives the information represented by the symbols. Blocks having two or more two-dimensional alignment patterns with good auto-correlation properties are used in some embodiments to facilitate recovery of the digital information. In one embodiment, motion picture film carries a conventional analog soundtrack and a digital soundtrack for a plurality of channels; the digital soundtrack is represented by symbols carried on the film in the areas between sprocket hole perforations.
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Atherton Mark Leighton
Mandell Douglas Evan
Richards Martin John
Seagrave Charles Gordon
Chapik Daniel
Dolby Laboratories Licensing Corporation
Gallagher Thomas A.
Lathrop David N.
Metjahic Safet
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