Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1044/40A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
Abstract
534,199. Copying sound-record films. PHILIPS LAMPS, Ltd. Jan. 17, 1940, No. 1044. Convention date, Jan. 20, 1939. [Class 98 (ii)] [Also in Group XXXVIII] Two or more stereophonic or other sound tracks recorded on one film at locations displaced laterally, longitudinally or both laterally and longi tudinally, may be copiec in such a way that displacement between the tracks is annulled laterally longitudinally, or botl laterally or longitudinally, as by running the film through a copying machine twice, one track only being copied at a time, or through a copying machine having two printing points 32, 33, Fig. 2, the film being given a free loop 25 between the two printing points to compensate for longitudinal displacement.
GB1044/40A1939-01-201940-01-17Improved methods of producing sound records
ExpiredGB534199A
(en)
System for the film projection of a movie of two scenes or independent, complete or simultaneous plans (Machine-translation by Google Translate, not legally binding)