Патент USA US2122337код для вставки
June 28, 1938. A. J. CAWLEY Tzmvgsmu ‘SYSTEM 2,122,337 Filed June 3‘, 1930 ' BY INVENTOR ATTORNEY Patented June 28, 1938 2,122,337 UNITED STATES PATENT OFFICE 2,122,337 TELEVISION SYSTEM Aloysius J. Cawley, PittstomvPa. Application June 3,’ 1930, Serial No. 459,369 13 Claims. (Cl. 178—7.1) The invention relates generally to the. electri cal transmission of images by means of wire or wireless communicating means. More particu- ' larly itgis concerned with the production of a 5 very compact means of both demonstrating a television image and simultaneously receiving and transmitting an image and has as a very de sirable object the simultaneous carrying on of a telephone and a television intercourse, it being 10 possible for two persons to hear and see each other as though actually in each other’s presence. The image is received from the distant station and demonstrated in the same image areas the image of the person or object that is transmitted is demonstrated. The advantage resulting from this arrangement is that two persons carrying on a telephone-television communication appear to be looking directly at each other. Reference is to be had to the accompanying drawing forming a part of this speci?cation, in which similar reference characters have like meanings in all of the views, and in which, distant station. A lens concentrates the image in the well known manner in the aperture 5, and actuates the series of photoelectric cells that are rapidly moved past the aperture in the well known 15 manner. Placed side by side and moving in ab solute synchronism with the series of photoelec Figure 1 is an elevational view of one form of correspond with each cell. An image-modulated electromagnetic wave train is received by the an- ‘20 tenna of the receiving apparatus r and is ampli ?ed therein. This ampli?ed current passes by wires 0 to the brush 0 to commutator 6 to wire a to neon tube 3, and if desired to wire b to oppo site segment of commutator to brush e to wire 17 '25 the television transmitting-receiving discs, illus and back to the amplifying apparatus. The disc trating the combined photoelectric cells and neon scans the image and the latter is produced in the well known manner. The cylindrical lens re duces all of the illumination of the tube to a lamps spirally arranged. so In Figure 2 the two-way transmission possibi ties are clearly illustrated. Motor 8 moves shaft 7 and disc I and commutator 6. The disc is ro- 10 tated in synchronism with a similar disc at the tric cells 2 are neon tubes 3, one being provided to The invention also produces an image from a 20 number of light sources. 28 rent passes from the cell to wire a to commutator segment of a commutator 6 to brush 8 to trans mitting circuit and back to an opposite brush 6, to wire b to cell 2.‘ The image is formed by a lens L in the aperture 5. The same lens may be 5 used to view the image formed by the neon tubes in this same aperture 5. Figure 2 is a side view of Figure 1 and also il lustrates the operation of the apparatus as well as its connection to the transmission and receiv ing apparatus. Figure 3 illustrates a modi?cation of the in vention, in which the photoelectric elements are 35 arranged singly along the spiral line. i sharp short line. '30 An image of the observer or person conducting the conversation is formed by a lens (not shown) in aperture 5, and as the series of photoelec tric cells sweep past, the image is scanned. The current from the cell passes by the wire to the - Figure 1 illustrates at I a disc of bakelite or other material which carries on its surface a se commutator Ba to brush 0’ by wire m to trans mitting circuit 73, to wire 11. to brush a’ to com ries of pairs of photoelectric elements consisting mutator 6a and by wire (as illustrated in Figure of a photoelectric cell 2 of the well-known cylin 40 drical form and a neon lamp 3. Each of these pairs is arranged in a spiral line on the scanning disc. Wires 0. and b are shown connecting two op 1) to cell 2. If a chopper effect is desired, a spur wheel 9 is mounted on shaft 1 and coacts with wheel I0, which in turn moves chopper wheel I I mounted on the same shaft therewith and sup posite commutator segments of commutator B. It is to be noted that,v particularly with the neon 1‘ and 7' are shown playing upon the chopper 45 tubes, connection to but one conductor and scan ning tube is su?icient. The disc is mounted upon and turned by a shaft '! operated by motor 8. A cylindrical lens is provided having its axis at right angles to the photoelectric cell or neon 50 tube and is shown at 4. This acts to concentrate the light coming from the tube into a ?ne, sharp line having its axis at right angles to that of 55 the tube. The connection of a photoelectric cell 2 is shown and is the same ‘for both the neon tubes and cells on both sides of the disc I. Cur ported by the casing of motor 8. Two brushes ‘wheel II. The insulated segments of the latter 45 are partly illustrated by the dark lines across its face. Its action is to break the current up into a series of dots or dashes in the well known man ner. The chopper acts to produce illumination in the aperture 5 in a series of transverse lines 50 each of which is broken up into a series of dots or dashes, and produces the effect of a half tone picture. A low intensity current may be con stantly applied to the neon tube circuits to main tain it in operating condition. 55 2 2,122,337 Figure 2 shows a variation of the invention which consists in arranging the photoelectric ele ments in the form of single row of photoelectric elements in contradistinction to a double row as shown in the other ?gures. There is accordingly a slight difference in synchronism between the neon tube image and the photoelectric cell im age. In the arrangement illustrated in Figure 1 the neon tube image and the photo cell images are scanned in absolute synchronism. Figure 3 is therefore, identical with Figure 2 except for the fact that photo cells 2 and neon lamps 3 traverse the image area consecutively, there being only one of each in the frame 5 at a electrical circuits in order to simultaneously re ceive a television image and transmit another television image. 3. In combination: a revolving medium carry ing a group‘ of light sources spirally arranged, each of said light sources being provided with cylindrical lenses whose axes are at right angles to the axes of said light sources, means for ac tuating but one of said sources in accordance 10 with an image current. 4. A scanning disc having a spiral line of al ternate photo cells and neon tubes. 5. A scanning disc cooperable with a single image aperture having a series of neon tubes ar 15 15 time, and also for the fact that the type of neon ' ranged in a spiral line and a series of photoelec lamp is shown which may be illuminated by means of one connection or wire only. When the image modulated electromagnetic waves from the » occupy said single image aperture. transmitting station are received and converted into image-modulated electric current by the usual wireless receiving means, such as that of Figure 2, this current is conducted to the com mutator Bby means of wires and brushes (as wires . image aperture having a series of neon tubes ar 20 ranged in a spiral line and a commutator whose segments are connected therewith in such man 11 and o and brushes e and c of Figure 2)‘. 25 .39 This image modulated current is in turn conducted to the neon lamp 3 by means of wire it (since only one wire is necessary in this modi?cation). The lamps therefore reproduce the received image in the image aperture or frame 5, while traversing its elementary areas successively therein. The fact is brought out in Figure 3 that but one wire. a may be necessary to connect the neon lamps, as there is a well known special type of lamp on the market that may be illuminated by means of a single Wire connection. An image is formed in the aperture 5 by means of lens placed in front of it, such as that shown in Figure 1. The photoelectric cells 2 also traverse this image. They are suitably connected to the commutator on the opposite side of the disk I (as shown in Figure 2). Accordingly, the image modulated current generated in these cells is ampli?ed and connected to suitable transmitting apparatus (such as, for instance, thatshown in Figure 2) .45 tric cells arranged in a spiral line, said tubes and said cells being so arranged as to successively and an image modulated wave train is sent to the distant station. This application is a continuation in part of my application Serial Number 50,528 ?led Au gust 15, 1925 for Electro optical system and of 50 application Serial Number 455,127,:?led May 23, 1930 for Television apparatus. Having described my invention I claim as new and desire to secure by Letters Patent: 1. The method of simultaneously producing a television image in an image aperture by mov ing a plurality of light sources consecutively in adjacent paths in said image aperture while sup plying said sources with image modulated elec tric current in order to utilize all of the light of 60 said source to form a visible image in said aper ture and of scanning an image by moving a plu rality of photoelectric cells consecutively in ad jacent paths in said image aperture to produce an image-modulated current in the said photo 65 electric cells while traversing said aperture. 2. In combination: means for forming an im age in an image aperture, means for moving a 6. A scanning disc cooperable with a single ner that but one cell is actuated at a time, and a series of photoelectric cells arranged in a spiral line and a commutator Whose segments are con nected therewith in such manner that but one cell is at any instant actuated for the simulta neous reproduction and transmission of television images, said tubes and said cells being so ar ranged as to successively occupy said single image aperture. 7. A two-way television method consisting of receiving image modulated radio waves from a distant station and converting said Waves into light at successive elemental areas of an image forming a second image in said image area co extensive With said area and with said reproduced image, and consecutively converting the light of said image into a second image modulated elec tric current at successive elemental areas of said second image and coextensively in said image area, converting said second image modulated current into image modulated radio waves and transmitting said waves to a distant station. 8. A two-way television method consisting of receiving image modulated radio waves from a distant station and converting said waves into light at successive elemental areas of an image area in order to reproduce an image in and co- ‘ extensive with said image area, simultaneously forming a second image in said image area co extensive with said area and with said reproduced image, and consecutively converting the light 55 of said image into a second image modulated electric current at successive elemental areas of age area. 9. A tWo-way television method consisting of receiving image modulated radio waves from a distant station and converting said waves into light at successive elemental areas of an image area in order to reproduce an image in and coex 69 tensive with said image area, simultaneously forming a second image in said image area coex tensive with said area and with said reproduced image, and consecutively converting the light of aperture, said tubes and cells having appropriate um said second image and coextensively in said im said image into a second image modulated elec tric current at successive elemental areas of said while passing through said aperture, said neon " tensive with said image area, simultaneously ly arranged photoelectric cells through said im tubes and said photoelectric cells being so ar ranged as to simultaneously occupy said image 35 area in order to reproduce an image in and coex series of spirally arranged neon tubes and spiral age aperture, and means for permitting but one of said tubes and one of said cells to function 2,5 .70 second image and coextensively in said image " area and transmitting said second image modu lated electric current to a distant station. 10. A two way television apparatus consisting of means for forming an image, an image aper 2,122,337 ture in which said image is formed, a plurality of photoelectric cells and suitable associated cir cuits, means for moving said photoelectric cells singly and consecutively in adjacent paths through said image aperture to produce an image modulated electric current; a plurality of light glow lamps singly and consecutively as it trav erses said image aperture to a receiving circuit, the image formed by said image forming means and the image produced by said glow lamps being coextensive‘with said image aperture. sources and suitable associated circuits, means for 12. A television apparatus consisting of an im age aperture, a rotatable disk adjacent and in moving said light sources consecutively and singly in adjacent paths through said image aperture, cooperative relation with said aperture, a plurality of electro-optical elements mounted upon said means for supplying said light sources with a suitable image modulated current to produce a visible image in said aperture by the variation in intensity and movement of said light source, the image formed by said image forming means 15 and the image produced by said light sources be ing coextensive with said image aperture. 11. A two-way television apparatus consisting v20 3 of an image forming means, an image aperture in which said image is formed, a disk cooperating with and movable across said image aperture, a plurality of photoelectric cells and glow lamps spirally arranged on one face of said. disk and movable thereby consecutively and singly in ad jacent paths across said image aperture, a com 25 mutator associated with said disk and suitably connected to said photoelectric cells, a second commutator associated with said disk and suit ably connected to said glow lamps, means coop erating with said commutator for connecting 30 each of said photoelectric cells singly and con secutively as it moves across said aperture to a transmission circuit, means coacting with said second commutator for connecting each of said disk and movable thereby across an image 10 formed in said aperture singly and consecutively in adjacent paths, a commutator suitably con nected to said electro-optical elements, means cooperating with said commutator for consecu tively connecting each of saidelectro-optical ele 15 ments to an external circuit as each of said ele ments traverses said image aperture and a cylin drical lens adjacent each of said electro-optical elements with its longitudinal axis at approxi mately a right angle to the axis of said elec 20 tro-optical element. 13. A two way television process consisting of forming an image of light waves in an image area, successively converting the light of the ele mental areas of said image into image varied 25 electric current at the successive elemental areas of said image area, and converting a second im age varied electric current into light waves at successive elemental areas of said image area in order to obtain a reproduced image in said image area, said image and said reproduced image being coextensive in said image area. ALOYSIUS J. C‘AWLEY.