Method for recording a digital audio signal on a motion picture film and a motion picture film having digital soundtracks
AssigneeSony Corporation
InventorKentaro Odaka
Life of this patent
Estimating the term…
Abstract
Digital audio signals and a conventional audio track are recorded on a motion picture film by error correction encoding digital audio data to be recorded on the film, sequentially arranging the error encoded digital audio data in a direction perpendicular to the direction of advancement of the film by utilizing two areas or more of an area in the vicinity of one end of the film which is parallel with the other end of the film and which is laid between it and one end portion of an analog sound track or an area near the other end of the analog sound track, and recording the same.
Claims26
A method for recording a digital audio signal including words on a motion picture film having a direction of travel, the motion picture film including two opposed edges, a picture area, the picture area including two opposed edges parallel to the opposed edges of the motion picture film, and a row of sprocket holes inset from each of the two opposed edges of the motion picture film, the audio signal being recorded in addition to a conventional analog soundtrack formed in the direction of travel, the conventional analog soundtrack having two opposed edges, and being located on the motion picture film between the row of sprocket holes inset from one of the opposed edges of the motion picture film and one of the opposed edges of the picture area, the method comprising steps of:
- (a) adding error correction code words to the digital audio signal, the words of the digital audio signal and the error correction code words collectively words of a coded digital audio signal, the words of the coded digital audio signal each including bits;
- (b) arraying the bits of each of the words of the coded digital audio in a rectangular array to provide rectangularly-arrayed words;
- (c) sequentially arranging the rectangularly-arrayed words of the coded audio signal into rows;
- and
- (d) recording each of the rows of the rectangularly-arrayed words of the coded digital audio signal as a row in two digital soundtracks located on the motion picture film outside the picture area and outside the analog soundtrack, one of the digital soundtracks being located between the one of the edges of the picture area further from the analog soundtrack and the row of sprocket holes further from the analog sound track, the other of the digital soundtracks being located between the one of the edges of the analog soundtrack further from the picture area and the row of sprocket holes closer to the analog soundtrack, each of the rows of the rectangularly-arrayed words being recorded in the digital soundtracks in a direction perpendicular to the direction of travel, successive rows being recorded in the direction of travel, such that ones of the bits of each of the rectangularly-arrayed words are arrayed in the direction of travel and others of the bits of each of the rectangularly-arrayed words are in the direction perpendicular to the direction of travel.
A motion picture film with digital and analog soundtracks, the motion picture film having a direction of travel, and two opposed edges, and comprising:
- (a) a row of sprocket holes inset from each of the two opposed edges;
- (b) a picture area having two opposed edges;
- (c) a conventional analog soundtrack having two opposed edges, the conventional analog soundtrack being located on the motion picture film between the row of sprocket holes inset from one of the opposed edges of the motion picture film and the one of the opposed edges of the picture area closer to the row of sprocket holes;
- (d) first and second digital soundtracks located on the motion picture film outside the picture area and outside the analog soundtrack, the first and second digital soundtracks running in the direction of travel, the first of the digital soundtracks being located between the one of the edges of the picture area further from the analog soundtrack and the row of sprocket holes further from the analog soundtrack, the second of the digital soundtracks being located between the one of the edges of the analog soundtrack further from the picture area and the row of sprocket holes closer to the analog soundtrack, the digital soundtracks having recorded therein rectangular arrays of bits disposed in rows in a direction perpendicular to the direction of travel, successive rows of the rectangular arrays of bits being recorded in the direction of travel, each of the rectangular arrays of bits representing one word of a coded digital audio signal comprising words of a digital audio signal whereto error-correction code words have been added.
Dependencies are inferred from the claim text.