Film with light sound track carrying the stereophonic sound info

Details Film with light sound track carrying the stereophonic sound info Film with light sound track carrying the stereophonic sound info

1975-10-20

1977-12-06

Cardillo, Jr., Raymond F.

1791001TD, 1791003B, 1791003C, 1791003E, G11B 720

Patent

active

040618897

ABSTRACT:
A film with a light-sound track carrying stereophonic sound information and a ribbon light valve for producing the light-sound track, and a light-sound transducer for reproducing the information recorded on the light-sound track. On the film, the sounds of two stereophonic channels are recorded in a single light-sound track in the form of an envelope asymmetric to the longitudinal axis of the light-sound track. The ribbon light valve has a light gate controllable by a ribbon arranged in a magnetic field; to the terminals of the two series-connected ribbons a transformer is connected. To the terminals connected with the transformer, two series-connected resistances are connected and, between the junction of the two resistances and the junction of the two ribbons, a further transformer is connected. The light-sound transducer has two light sensing elements, and electric terminals for tapping separately the signals of the two light sensing elements. On the light-sound track, the stereophonic sound of a compatible recording system can be recorded and the film can be projected with a monosound projecting apparatus.

REFERENCES:
patent: 1922821 (1933-08-01), Pulvermacher
patent: 2089484 (1937-08-01), Kleber
patent: 2093540 (1937-09-01), Blumlein
patent: 2108815 (1938-02-01), Gille et al.
patent: 2118622 (1938-05-01), Sachtleben
patent: 2124030 (1938-07-01), Douden
patent: 2269638 (1942-01-01), Scoville
patent: 2295536 (1942-09-01), Albersheim
patent: 2518743 (1950-08-01), Bach

Affiliated with

Also associated with

Rating

Film with light sound track carrying the stereophonic sound info does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Film with light sound track carrying the stereophonic sound info, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Film with light sound track carrying the stereophonic sound info will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1552318