Back to results
US 7,894,719 B2Granted
Recording data on motion picture film
AssigneeThomson Licensing
InventorsJames Arthur Fancher, Jeff James Rosica
Life of this patent
Estimating the term…
Abstract
A film record comprises a film strip representing a plurality of frames. At least one of the frames includes at least one region wherein the optical density of the region is representative of a symbol from a constellation of symbols.
Claims14
An apparatus comprising:
- a mapper for selecting one of a number of optical density levels as a function of data applied to the mapper, wherein each optical density level represents a symbol from a constellation of symbols, and wherein each symbol represents a plurality of bits of data;
- and
- a light source for exposing a film such that the selected optical density level is recorded on the film.
A method for storing data, the method comprising:
- receiving data;
- mapping the data to a symbol selected from a constellation of symbols and wherein each symbol represents a plurality of bits of data, and wherein each symbol is associated with a respective optical density level;
- and
- recording the symbol on film by creating thereon the respective optical density level.
1 more element
An apparatus comprising:
- a mapper for selecting one of a number of optical density levels as a function of data applied to the mapper, wherein each optical density level represents a symbol from a constellation of symbols, and wherein each symbol represents a plurality of bits of data;
- and
- a light source for exposing a film such that the selected optical density level is recorded on the film;
- wherein the light source exposes frames of the film such that selected optical density levels are recorded in a checker-board like pattern on at least one frame of the film.
1 more element
An apparatus comprising:
- a mapper for selecting one of a number of optical density levels as a function of data applied to the mapper, wherein each optical density level represents a symbol from a constellation of symbols, and wherein each symbol represents a plurality of bits of data;
- and
- a light source for exposing a film such that the selected optical density level is recorded on the film;
- wherein the light source exposes frames of the film such that selected optical density levels are recorded in a rectangular like pattern on at least one frame of the film.
1 more element
An apparatus comprising:
- a mapper for selecting one of a number of optical density levels as a function of data applied to the mapper, wherein each optical density level represents a symbol from a constellation of symbols, and wherein each symbol represents a plurality of bits of data;
- a light source for exposing a film such that the selected optical density level is recorded on the film;
- and
- further comprising an encoder for encoding the data with an error correction code before selection of an optical density level.
1 more element
Dependencies are inferred from the claim text.