Патент USA US2123323код для вставки
July 12, 1938. p. ‘VON MIHALY 2323,323 ‘ SOUND? RECORD Filed March 28, 1929 .I/n ventar: 0.“ WWI Wh'hqé/ 2,123,323 Patented July 12, 1938 . UNITED STATES PATENT OFFICE’ _ 2.12am SOUND asooan Dénes vlon Mihaly, Berlin-Wilmersdorf, Germany. assignor to the ?rm Julius Pintsch Aktien gesellschaft, Berlin, Germany - Application March 28, 1929, Serial No. 350,692 In Germany December 8, 1928 '1 Claims. (01. 214-415) of ?lm provided with a sound record according Various sound records upon ?lm sensitive to‘ light are already known, as well as apparatus to the invention. of the ?lm shown in Fig. 1. of an‘ arc lamp inductively by microphone cur guided by rollers ,2 and is provided with a con tinuous photographic sound record 3 of less width rents and allowing the varying light of the arc lamp to act through a slit upon a sensitive ?lm than the ?lm. The sound record extends a num moving rapidly past it. To the sound vibrations in there correspond varying bright and dark strips ber of times around the ?lm along lines which 10 are parallel to each other and “to the edges of upon the ?lm.v If such a ?lm is passed, in front of a constant source of light, and the rays of ' the ?lm, the record shifting at intervals and pass ing completely around the ?lm between two such the source of light darkened to‘ a varying extent by the variations in the depth of the blackening displacements. corded can again be heard. The advantages of such ‘a reception and repro _ duction of sound, as compared with those of a disc‘talking machine are immediately obvious. 25 Since both the recording and the reproduction are effected by means of a ray of light no wear of the sound record carrier can occur. Further. more duplication is cheap and simple. The rec ord carrier is unbreakable. ' . . These lines form a plurality of sound track 15 ii of the ?lm are thrown upon a’ cell which is sensie tive to light and which is connected in a joint circuit with a telephone, corresponding variations in the resistance of the sensitive cell are pro duced and corresponding variations of current in ' Referring to the drawing in detail, the endless 5 I band-of light sensitive ?lm designated at I is ‘5 of these devices consists in in?uencing ‘the light 90 the telephone, so that the sound originally re ., Fig. 2 is an enlarged detail in plan of a part forthe production of such ?lms and apparatus for the reproduction of the records. The oldest sections which are disposed generally longitudi nally of the ?lm and the shifting of the record forms crossover or bridging sections 4 connect ing the end of‘ one sound track section with the beginning of another sound track section. 20 What I claim is:-— 1. A sound record for talking machines and the like, consisting of an endless band of light sensi tive ?lm on which sound has been photograph ically recorded in lines extending a number of 25 times around the endless band parallel to the ' edges of the ?lm, the record shifting from one line to the next at intervals and passing com pletely round the endless band between two such The invention consists essentially in that the record carrier is constituted by an endless strip of ?lm on which the record of the sound runs along lines which are parallel to the edges of the ?lm, which lines intermittently pass from one 85 into the other at one point of they ?lm. This ar- ' rangement has the advantage as compared with displacements. 30 ~ 2. An endless transparent light-sensitive standard type motion picture ?lm having a pho tographic sound record thereon, said record being ' of a width less than that of said ?lm, said record comprising a plurality of portions paralleling and 35 adjacent each other and paralleling the edges 01 the known arrangement in which the sound the film, said portions being joined to form a record runs along a spiral line, that when the ?lm - single record. breaks the same can be stuck together without - 3. An endless - transparent light-sensitive standard type motion picture ?lm having a pho- 4o tographic sound record thereon, said record being of the sound record will no longer correspond . of a width less than that of said ?lm, said record comprising a plurality of portions paralleling and to one another. It is also known to provide ?lms with a plu ‘adjacent each other and paralleling the edges of the ?lm, said portions including’ bridging sec- 45 M rality of record strips being parallel to one an other and to the edges of the ?lm. However, tions between the successive parallel portions, the 40 di?iculty whilst this is not possible with the known arrangement, since in that case theends such records are not continuous and for repro~ ducing the ?lm has to be moved alternately in opposite directions which involves a complicated 50 driving mechanism and causes interruptions of the sound reproduction at the end of each strip. The accompanying drawing illustrates by way ‘ of example a sound record according to the pres 55 ent invention. Figure 1 is a perspective view of an endless band whole forming a single record. ' 4. A uni-directional endless transparent light sensitive standard type motion picture ?lm' hav ing a photographic sound record thereon, said 50 record being of a width less than that of said ?lm, said record comprising a plurality of por tions paralleling and adjacent each other and paralleling the edges of the‘ film, said portions including diagonal bridging sections between the 55 2,123,323 . successive parallel portions, the whole forming a sound record including integral crossover sec tions between the; said several parallel sections. single record. 5. An endless transparent light-sensitive . 7. A transparent light-sensitive endless iilm,‘ standard ty'pe motion picturet?lm having a pho including a unitary photographic sound record ( tographic sound record thereon, said record being comprising a plurality of sound tracks disposed 5 oi' a width less than that of said ?lm, said record generally longitudinally of the iilm and substan comprising a plurality of portions paralleling and ' tially coextensive therewith, and continuous adjacent each other and paralleling the edges bridging sections disposed between [the several 0! the iilm, said portions including rectilinear longitudinal sound-track sections and extending 10 bridging sectionsgbetween the successive parallel in the general direction of the said several sound 10 track sections for connecting the end of one portions, the whole forming a single record. 8. In a transparent light-sensitive endless film . a single narrow photographic sound record thereon and disposed in parallel sections, said sound track section with the beginning‘ of an other sound track section. ' . nmms vos MIHALY.