US3854802A - Image recording and projection method and apparatus - Google Patents

Image recording and projection method and apparatus Download PDF

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US3854802A
US3854802A US00383813A US38381373A US3854802A US 3854802 A US3854802 A US 3854802A US 00383813 A US00383813 A US 00383813A US 38381373 A US38381373 A US 38381373A US 3854802 A US3854802 A US 3854802A
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image
storage medium
indicator
recording
projection
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M Gazale
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/08—Trick photography

Definitions

  • the screen may be a very large section of a hollow sphere or cylinder. ltmay be, as an example, a,
  • Another object is to provide a projection process upon an oversizedscreen, the projected image of a regular picture, through the useof a particular code indicating the location of the image upon the screen.
  • a further object is to provide such a projection process characterized by the utilization of normal projection.
  • methods associated with wide-screens the dimensions of which are much larger than would normally correspond to the projected pictures), the projection being'oriented in azimuth and elevation towards varying regions of the wide screen, according to a recorded 5 program which relates each picture to a corresponding region of the screen.
  • a recorded 5 program which relates each picture to a corresponding region of the screen.
  • Yet another object is'to'p'rovi'de a recording method wherein the program may be generatedafter or during pucture-taking, by capturing upon a support data corresponding to the recorded.
  • Still another object is to provide such a recording position in space of the object being-- method wherein the recorded'program allows a sequence of recorded scenes to be .restituted upon the screen in the exact relative location of "the scenes as was present during recordinggby successively altering theprojection axis in like manner as was the recording axis.
  • a final object is to provide apparatus: for implementing the. above methods.
  • 1 SUMMARY OF rue INVENTION The present method isadapted to the projection. of moving pictures aswen as still pictures, such as photographic slides. i r
  • the coded information representing I the region of the screen where. the projection of a parwhich allows one to locate, in' azimuth and elevation corded on a storage medium; during the projection process the storage medium containing the associated indiof the camera withrespect to some fixed reference, or
  • the present invention resides in a method'for recording and subsequentlyprojecting pic:
  • a pictorial image is recorded on a storage medium and an indicator of the relative pro-' jection position to be associated with the imageis recator is read and the projection orientation of a projection system is adjusted in accordance therewith.
  • The: storage medium containing theimage Iis also read and the 'imagefprojected'through the projection systemonto a screen substantially oversized relative to the projectedir'nage.
  • the image may be recorded on photographic film or I i one frame of a cinematographic (motion picture) film.
  • theimage'and associated indicator are recorded on the same storage'medium, typically a sound cinematographic film.
  • the associated indicator is read prior to the image.
  • the image-and the associated indicator are recorded on different frames of I the same cinematographic film, the associated indicaas the associated, indicator, whereby upon projection of the image according tothe associated indicator the image is projected onto a region of the screen corre-- ticular frame is to occur is either directly recorded on the frame on a special track, or on some associated support, suchas a magnetic tape whose motion is synchronized with the transition of the frameslbeing projected, whether they be frames of a moving picture or still frames.
  • 1 a s The region of the screen where a given frame is to be 7 projected is defined by the inclination of the projection beam as it emerges from the projection syste'm,this'in-.
  • SAC site-azimuth code
  • the orientation of the image recording apparatus is re corded, in real time in the course of image recording,
  • the associatedindicator is generated artificially and independently of the orientation of the image recording apparatus.
  • the associated indicator is: preferably recorded as a site-azimuth code.
  • the indicator-recording storage medium may be read in discrete steps or advancedcontinuously during reading. in the former case, the image-recording storage medium is also advanced during reading in discrete jumps; for example,.jumps corresponding to frames of a cinematographicfilm- Iv
  • the projection system preferably includes a plurality of mirrors rotatable about at least-two orthogonalaxes accordingto the associated indicator to cause a resul tant two dimensional deflection of the projected image.
  • one, of the mirrors isrotat'ableabout only one orthogonalaxis according to the associated FIG. la;
  • Apparatus for recording and subsequently projecting pictures successively onto various areas of a substantially oversized screen in a predetermined pattern comprises a projection system and first and second storage media.
  • the recording system includes means for recording a pictorial image on the first storage medium and means for recording an' indicator of the relative projection position to be associated with the image on the second storage medium.
  • In connection with the projection system are means for reading the second storage medium and adjusting the'projection orientation of the projection system in accordance with the indicator thereon, and means for reading the first storage medium and projecting the recorded image through the standing in the projection window.
  • plane X that projection system onto a screen substantially oversized relative to the projected image.
  • FIG. la is a perspective view of a projection system comprising a projector and a large screen
  • FIG. 1b is a perspective view of a frame as it appears in the window of the projector
  • FIG. is aside elevational view of one embodiment of a projection system wherein-the SAC is recorded on FIG. 2a is a perspective view of a camera mounted in a tripod through an articulation allowing orientation'in site and azimuth of the camera;
  • FIG. 2b is a top elevational view of the camera of FlG. 2c is a side-elevational view of the same; FIG; 2d is a side elevational view of one embodiment on the film itself;
  • FIG. 22 is a side elevational view of another embodi system corresponding to FIG. 2e;
  • FIG. 5a is a schematic view of a deflection system using two mirrors and three reference axes.
  • FIG. 5b is a schematic view. of a deflection system analogous to that of FIG. 5a, to which two fixed mirrors are added.
  • FIG. lb represents a frame being projected, as it is plane containing axis xx which is perpendicular to the frameplaneCurveXOX' of FIG. 1a represents the intersection of Plane X and screen E.
  • plane Y that plane containing axis yy' which is perpendicular to the frame plane.
  • Curve YOY of FIG. la represents the intersection of plane Y and screen E.
  • Point- O cuts each of XOX and YOY' in half.
  • plane Y will be vertical, however, plane X may not necessarily be horizontal, since it may happen that the pro jector be physically located higher than the horizontal axis of the screen.
  • image b has 0' for center.
  • angles a and B are respectively its azimuth and site.
  • the'SAC is recorded on the film itself, and reader "I is thatv device which reads the SAC off of the film and transmits to the logic L.
  • FIG. 1d shows magnetic tape. in being read by tape reader M which advances step by step. as itreceives stepping pulses. from emitter e which iscoupled to projector P.
  • the present invention as far as the projection or restitution system is concerned, is illustrated firstly by a reading'dev'ice which-reads the SAC off either the film itself or an auxiliary support ln the first case, the reading device is represented by l in FIG. 1c.
  • the reading device is comprised of tape reader M and pulse emitter e which is coupled to projector P.
  • the present invention is characterized secondly by a positioning device represented by symbol D in FIGS.'1a, 1c and 1d, which orientates the projection beam according to theSAC read by the reading device.
  • the present invention is characterized thirdly by logic L shown on FIGS. 1e and 11d, which translates the SAC into corresponding electric signals which operate thedeflection system.
  • the devices describedpertain to the projection or restitution system regardless of the method in which the SAC is-generated and recorded.
  • FIG. 4b is a partial schematic view of the recording
  • the present invention comprises encoding systems referred to as real time encoding systems which measure and record, during filming, inclination v of the camera with respect to a fixed frame of refer-
  • FIG. 5c is a schematic view of a fixed-site and vari-.
  • FIG. la shows a projector P equipped with a deflector D which orientates the projection-beam toward any location of screen E.
  • Two locations a and b arev shown the projection system ence, such as a tripod for example.
  • the present inven- .tion also comprises SACgeneration and recording systems referred to as post-encoding systems which generate the SAC artifically, after filming.
  • each frame is accompanied by a code which reflects site and azimuth of the camera at l the very moment that this particular vframe is being shot and recorded on film.
  • This method is illustrated by FIGS. 2a, 2b, 20 which represent camera C mounted on Tripod T through an articulation A which allows orien: tation of camera C in site and azimuth with respect to Tripod T.
  • Axis cc is the optical axis of the camera lens system.
  • System A is designed to measure inclination of I axis cc with respect to a horizontal plane, thus giving site, and its inclination with respect to a vertical plane,
  • FIG. 2d illustrates the case where the SAC is recorded on the film itself.
  • signals are transmitted from device A, throughcable W to logic L which converts these signals to codes which in turn are recorded upon the film through recorder r.
  • the signals generated by A are-transmitted through cable W to logic L which in turn converts these signals to SAC signals which are transmitted totape recorder M.
  • Emitter e is a device which is coupled to camera C and generates synchronizing pulses to logic L as well as a recorder M.
  • Emitter ,e' can be either a pair of contacts operated by the motor of camera C or some opto-electronic system detecting film motion.
  • the present invention is characterized firstly by a device A called inclination sensor, secondly by a recording system, represented by r in FIG. 2d and by M in FIG. 24?, and thirdly'by a writing logic L.
  • FIGS. 3a and3b illustrate the detail of articulation A of FIGS. 2a and 2b and 20 containing the inclination sensor which measures angles a and B shown on these figures, in real time, while filming proceeds.
  • Tripod T is connected to a piece 1 on which a U-shaped piece 2 is articulated.
  • the camera operator once he has firmly fixed tripod T, orientates piece 2 so that platen 4 ishor-f izontal, He then locks piece 2 in place by fastening butterfly screw 3.
  • PIatenS rotates over platen 4, and'the azimuth angle between the two can be read thanks to a cursor II which faces graduations 12 of platen 5.
  • Platen 5 carries box 6 containing site and azimuth measuringdevices.
  • U-shaped piece 7 is articulated in rod -8 with respect to box 6.
  • the camera is attached at point 10 to piece 7 for movement therewith. Site ,anglecan be read thanks to cursor 11' on box 6, which faces graduations l2 on piece 7.
  • Box 6 contains two classical shaft encoders, and FIG. 3b shows as a possible example encoders of the threephase servo type. Obviously,'any other shaft encoding which is being secured to the platen 4 upon which platen 5 revolves; Stator 15 is, of course, fixedly secured to box 6. Similarly, the rotor winding 16 of the site servo is secured to shaft 8 for rotation therewith,
  • the set of three wires 18 feed a synchro to digital converter 46 of classical design, which is also fed by the reference signal.
  • the set of three wires 19 feeds a synchro to digital converter 47 of the same type as 46, which is also fed by the reference signal.
  • FIG. 4a represents, as an example, 12-bit converters, which correspond to dividing the circumference into 4,096 parts. In practice, higher or lower precisions may be. required, and encoders as well as converters readily available in industry are very well adapted to precisions of this order. Bits 21 to 32 represent azimuth code, and bits 33 to 44 represent site code. Together, bits 21-44 represent the SAC. Along with every frame that is recorded on film 51 of FIGS. 4a, the corresponding 24. bit SAC must be recorded in'real time during-the fraction of a second during which the frame is exposed.
  • FIG. 4a represents a recording mode for those 24 bits upon track 52 of film 51.
  • This track may be optical or magnetic and recording head 57 is therefore of the corresponding type.
  • Film 51 is shownon the figure-at an instant when frame i is stationary in front'ofwindow 53.
  • Arrow 58 shows direction of motion of the film.
  • dotted line A surrounds a portion of the drawing containing rotor windings, 14 and '16 of the azimuth and siteservos, respectively, as well as stator windings Band 17 of the same servos.
  • the reference signal carried by wire pair 20 feeds rotor windings l4 tion.
  • the recording systems of the present invention may use existing cameras designed for multi-track sound retracks to SAC recordcording by devoting one of these ing.
  • Emitter e of FIG. 4a ismade up of cam-48 and con- -tactor 49. This devicegenerates an electrical pulse. called image pulse corresponding to the precise instant when one framebegins to leave the window.
  • image pulse corresponding to the precise instant when one framebegins to leave the window.
  • the method shown on FIG. 4a consists in first transfering bits 21 to 44 to a 24 bit shift register 47, this transfer occurring in parallel, then to transfer serially, bit by bit, the contents of shift register 47 to write head 57.
  • Shift register 47 is a classical parallel-load, serial read-out register of a type readily available on' the market.
  • bit a shifts to bit b, and so on, until ultimate bit d which exits from the shift register over wire 47' towards the write amplifier.
  • Shift register 47 possesses 24 parallel inputs 21 to 44. Furthermore, it possesses a clock input 55 and a load input 21'. The image impulse generated by e' is connected to the register in load input 21 and causes the SAC to be loaded in parcording head 57. Recorder r of FIG. corresponds to recording head 57 of FIG. 4a.
  • FIG. 4b represents the case where SAC is recorded upon an auxiliary support.
  • elements-A, L and e are identical to those of FIG. 4a.
  • Output ynow is connected to magnetic recording head 62.
  • Tape 61 is driven, for example, by stepping 'motor 64 through pulses received from emitter e over wire x.
  • motor 64 drives magnetic tape ni through arrow 67. 1
  • Delay circuit 54 is intended on the one hand to allow transfer of data from register 21 toshift register 44 before serialization begins, and on the other hand, in the- I ilarly, the area circumscribed by dotted line L" corresponds to recording logic I. of FIG. 2d and 20.
  • wires y carrying the signal from logic L'to the re- The area surrounded by dotted line M of FIG. 4b corresponds to recorder M of FIG 2e which has inputs y andx.
  • Input x of FIG.'4b comes from emitter e, of FIG. 4a.
  • Connections x and x carry the same signal coming from cam 48 and contact'49.
  • the projection beam coming out of projector P must be deflected in site and azimuth according to the information contained in the SAC, whether this is read off the film itself or an auxiliquire moving rather heavy mechanical parts, and the system response cannot be fast enough to m'e'et system requirements, which are that the beam must ,be totally deflected in site and azimuth in less than 1'0 millisectwo very light mirrors, onefor site and the other for azi-.
  • v muth which can be rotated about two orthogonal axes;
  • the mirrors are mounted in such a way that the total deflection of the projection beam isthe resultant of two orthogonal deflections.
  • FIG. 5a represents three orthogonal axes xx, yy'and zz. Axes xx and yy intersect at 'y' while vaxes'yy' and zz' intersect at 7.
  • Mirror a is'attachedto'an axle a'a" which runs parallelto zz' through pointy.
  • I mirror b is attached to axle b'b" which runs parallel to xx through point 7'.
  • An arrow F which is projected along axis xx in the direction x toward x is first reflected by mirror a then by mirror b, and casts an image F along axis 21' when mirrors'a and b make an angle of 45 with axes xx and zz respectively.
  • a rotation a of axis aa" causes the image to slide from F onto F".
  • a rotation B of axis bb causes the image to I slide from F to F.
  • the conjunction of rotations a and B causes a composition of the above' two displacements, and the arrow slides from F to FIV.
  • the arrow image is subjected to rotation which must be compensated for in order to restore its original. orientation.
  • This is therole of fixed mirrors c and d, whic h are used in conjunction with mirrors a and b.
  • axis x is axis xx of FIG.
  • axes y2 and z2 of FIG. 5b are respectively axes yy' and 22' of FIG. 5a.
  • Axes y, and z; are parallel to y and 2 respectively.
  • Mirror d is inclined at 45 with respect to each of axes x, and y, and its plane is parallel to axes z, and Z Similarly, mirror is inclined at 45 with respect to each of axes x and y, and its plane is to circuit 81, which amplifies and shapes the signal before transmitting it to circuit 79 which. restores orexsignal is sent over wire 84 to the clock input of shiftregister 80, and the data signal is transmitted serially over FF, while rotation of mirror b causes alsite displacement of the arrow. 1
  • the organs GA and GS rotate mirrors a and b around their respective axes.
  • Mirrors a, b, c and d, together with organs GA and GS can be mounted inside a box having two windows, one centered around axis Z and the other around axis 2
  • This box is inserted between projector P and the screen, very near the projector, so that the first of these two windows faces the projector, and the box is oriented in-such a way that axis 1 is the optical axis of the projector.
  • Lens systems Al and A2 are disposed respectively, at the input and output windows of the box toimprove the optical properties of the system.
  • Mirrors f, g,'h and q are all vertical.
  • Mirrors, f, g and h are fixed, while q can rotate about a vertical axis.
  • Mirror f intercepts the beam emerging from projector P. It is-inclined at 45 with respect to the optical axis of P, and reflects the beamtowards mirror g, parallel to mirror f, which in turn sends the beam towards mirror h, perpendicularto mirror g.
  • mirror h reflects the beam toward mirror q,.which sends the beam towards a region of the screen depending on the rotation of mirror'q, which is actuated by an organ not shown in FIG. 5c.
  • FIG. 6a illustrates the principle of the read-out logic L of FIGS. 1c andjl'zLFilm 70 moves in front of window 72 and reading head 73 with arrow 71 indicating the direction of motion.
  • Frame 1 of FIG. 6a is itself frame i-k of FIG. 4a, that is to say, that very frame on whose margin the SAC recorded is that corresponding to frame i.
  • One method according to the present invention con sists in using double-buffering.
  • the first of two registers 'ister 84 hence transferring, in parallel the contents of register 80 to register 84. For example, the bit in position a is transmitted to position a over wire 82.
  • each group being connected a digital-to-analog converter.
  • Bits 82 to 93' corresponding to azimuth code feed D/A converter 86 of FIG. 64;, while bits 94' to corresponding to site code feed D/A converter 87.
  • the output of converter '86 is passed through a special amplifier 88 which, in turn, drives azimuth galvanometer GA through connection 90.
  • the output of converter 87 is passed through'special amplifier '89 which, in turn, drives site galvanometer GS through connection 91.
  • Circuits surrounded by dotted line L in FIG. 6a correspond to read-out logic L of FIGS. 10 and 1d.
  • GalvanometersGA and GS' of FIG. 6a are the same as-those receives data from the film and transmitsit to the second register, which in turn transmits 'it' tothe conversion devices which drive the mirror actuators.
  • Reading head 73 reads data 75. recorded on the film track and-transmits it over connection 76 of FIG; 5b which represents deflector D of FIGS. 1a, 1c
  • Circuits surrounded by dotted line eof FIG. 6a correspond to emitter e of FIGS. Ia and 1d.
  • reading head 73 is ahead of the win-- dow in FIG. 6a is that presently used systems of soundonsfilm recording are constructed in such a waythat the sound reading devices are ahead of the projection window.
  • the present invention can take advantage of such systems, without change, by using one of the sound tracks for SAC recording.
  • Existing projectors i that is presently at the window. Reading head is there fore just about to read the SAC. off the margin of frames i -l- 2, when frame i being projected.
  • the consequence of this construction is that the SAC of frame i is on the margin of frame i' itself. This presents considerable advantages, since each frame carries its own SAC, hence solving cutting, splicing and editing problems. Since each frame carries its own SAC, FIG.
  • FIG. 6a which illustrates projection of cinematographic film, if modified so that reading head lags behind the window, can also be used to illustrate projection of still frames or slides.
  • One possible scheme consists of reading the SAC off the margin of the frame as it is being introduced into the projector and generating an image pulse artificially after the frame is completely introduced.
  • actuators' can be used consisting of moving coil' or moving iron galvanometers.
  • response times of the order of half a millisecond can be attained, which is, faster than required by the systems described in the present invention.
  • the use of galvanometers and linear amplifiers presupposes, as shown in FIG. 6a, the conversion of SAC from its digital form to an" analog signal. This is easily achieved through digital to analog converters of the type widely available on the market.
  • the principles described in the present invention can also be implemented using other positioning systems, such as those commonly employed in numerical control. These may be devices where the actuator consists of a motor coupled to a binary disk which measures at every instant the actual rotation and compares it to the desired rotation shown on, output register 84 of FIG. 6a. There are also available on the market actuating devices which can convert binarydata directly into a corresponding mechanical displacement.
  • vanced frame by frame and which drives recorder M in synchronism The SAC isgenerated by articulation A as the viewer is moved in site and azimuth by the operator.
  • Another arrangement can be realized, where the viewer is dismounted from articulation. A, the latter being manually operated by a sort of manually operated joystick.
  • the present invention provides a system for varying the location of a series of projected images exclusively in accordance withinformation contained in a SAC code--whether stated in orthogonal, polar or other coordinate systems-without respectto any ex-' ternal fixed point.
  • D. means for recording an indicator in site-azimuth code of the relative projection position to be associated with the image on said second storage medium, the associated indicator representing the orientation of the image recording apparatus in real time in the course of image recording;
  • F. means for reading said'first storage medium and .real time position of the imageduringrec'ording.
  • a method for recording pictures for subsequent projection successively on to various areas of a substantially oversized screen in a predetermined pattern comprising the steps of: v
  • each image is Y recorded on one frame of a cinematographic film.
  • each image and associated indicator are recorded on different frames of the same cinematographic film, the associated indicator being recorded on a frame prior to the frame bearing the image.
  • sociated indicator is recorded as bits representing a site-azimuth code.
  • Apparatus for recording pictures for subsequent projection successively onto various areas of a substantially oversized screen in a' predetermined pattern comprising:
  • the projection system includes a pair of mirrors rotatable about differ 44.
  • the projection system includes a mirror rotatable about only one orthogonal axis according to the associated indicators to cause a resultant one dimensional deflection of the projected images.
  • Apparatus for projecting pictures successively onto various areas of a substantially oversized screen in' a predetermined pattern comprisingz' A. a projection system; B. first and second storage media; said first-storage medium bearing pictorial imagesand said second ages, the associated indicators representing the orientation of the image recording apparatus in the course of real time image recording;
  • step (B) means for reading said first storage medium and projecting the images through said projection sys-. tem onto a screensubstantially oversized relative to the projected images to project the images onto regions of the screen corresponding to the real time position of the images during image recording.
  • step (C) the associated indicator is electromagnetically read from the storage medium containing the associated indicator.
  • step (C) the projection orientation of the projection system is adjustedexclusively in'accordance with the information contained in the indicator.
  • said projection system includes a pair of mirrors rotatable about different orthogonal axes according to the associated Y storage medium bearing indicators of the relativeprojection positions to be associated with the image medium.
  • step (B) the indicator is electromagnetically recorded on'the stor- 54.
  • the apparatus of claim '29 wherein said indicator jected images.
  • orientation of said projection system exclusively in ac-- recording meanselectromagnetically recordsthe. indicators on said secondstorage medium.
  • the apparatus of claim 29 wherein said indicator recording means records each indicator'as bits repre- 56.
  • the method of claim 30 wherein in step the indicators are electromagnetically'read from said stor- 59.
  • the apparatus of claim 45 wherein s'aid projection system includes a mirror rotatable about only-one orthogonal axis according to the indicators to cause a resultant one dimensional deflection of the projected images.

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US4131345A (en) * 1977-10-27 1978-12-26 The Singer Company Visible light projection device
US4673266A (en) * 1983-06-17 1987-06-16 Fabrizio Fiumi Display of subtitles during the screening of a motion picture
US5262867A (en) * 1990-06-20 1993-11-16 Sony Corporation Electronic camera and device for panoramic imaging and object searching
CN101943849A (zh) * 2010-08-31 2011-01-12 福建网讯科技有限公司 单投影宽屏投影装置
CN101943848A (zh) * 2010-08-31 2011-01-12 福建网讯科技有限公司 一种单投影宽屏投影装置
WO2012027974A1 (zh) * 2010-08-31 2012-03-08 福建网讯科技有限公司 单投影宽屏投影装置及方法

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JPS5298142A (en) * 1976-02-10 1977-08-17 Tokai Metals Co Lid for cultivating container of mushroom
JPS568622A (en) * 1979-06-30 1981-01-29 Hotsuken Sangyo Kk Artificial cutivation of mushroom

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131345A (en) * 1977-10-27 1978-12-26 The Singer Company Visible light projection device
US4673266A (en) * 1983-06-17 1987-06-16 Fabrizio Fiumi Display of subtitles during the screening of a motion picture
US5262867A (en) * 1990-06-20 1993-11-16 Sony Corporation Electronic camera and device for panoramic imaging and object searching
CN101943849A (zh) * 2010-08-31 2011-01-12 福建网讯科技有限公司 单投影宽屏投影装置
CN101943848A (zh) * 2010-08-31 2011-01-12 福建网讯科技有限公司 一种单投影宽屏投影装置
WO2012027974A1 (zh) * 2010-08-31 2012-03-08 福建网讯科技有限公司 单投影宽屏投影装置及方法

Also Published As

Publication number Publication date
JPS4946742A (de) 1974-05-04
FR2195357A5 (de) 1974-03-01

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