Patent
1974-11-08
1976-07-13
Canney, Vincent P.
1791003GN, G11B 700, G11B 724, G11B 2318
Patent
active
039695930
ABSTRACT:
Sound is recorded on color motion picture film in the form of variations of ue rather than overall density, with inverse density variations of different color media of the film directly superposed. With three distinct color media it is possible in that manner to record two separate sound channels, the respective channels being hue modulated on distinct hue axes. Such hue modulated sound records are inherently virtually free from noise due to occlusions such as dirt and scratches on the film. Apparatus is disclosed for recording sound in the described manner and for reproducing sound from such records, including electronic means for reducing additional forms of noise. The inherent reduction of noise permits the normal sound track area of conventional films to accommodate several distinct tracks, each of which can carry two distinct sound channels or one sound channel and a control channel. Particularly effective and economical apparatus is described which can replace part of a conventional sound reproducing head and provide an existing motion picture projector with capability for reproducing such multi-track records.
REFERENCES:
patent: 2387832 (1945-10-01), Cooney
patent: 3281151 (1966-10-01), Kaprelian et al.
patent: 3624284 (1971-11-01), Russell
Canney Vincent P.
The Association of Motion Picture and Television Producers Inc.
LandOfFree
Sound recording on color film by hue modulation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sound recording on color film by hue modulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sound recording on color film by hue modulation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1741008