SU1021020A1 - Tv motion picture projection device - Google Patents

Abstract

1. A DEVICE FOR TABLE-BACKING FILM PROJECTION, an effective positively assured projection epec-but-radiation tube (CRT), a film-proof mechanism, an optical system and a photo-output 6ROKt-chI-ch-chI-ch chI-chI equipment chytochr chrotr-shrot, the optical system and photo laser 6ROKt output the chr ch i cht chI cht chr cht chr chR t th chR t th h t h h h h h h h t h t t th l p t t th l p t t p l p l p l m t l m a t b p l. 1. A DEVICE FOR TABLE-BELTING FILM PROJECTION, EFFICIENT PERFECTLY APPEAREDLY APPROVED PROJECT EQUATRICALLY-RAY TUBE (CRT), APPROTECTION MECHANISM, ORIGINAL SYSTEM AND PHOTOPLE CHARGET APP CHART CHART CHART CHART CHART CHRELT PROTECTION the recording unit and also the synchronizer, so that, in order to reduce Tpe6cbi to a stable yuga film, the receiver unit was installed on the first TV sync signal the yaton is connected to the uvdolsozhpuyoyp07% 1, whose output is connected to the entrance of the CRT, the serially connected frame divider and the beam-quenching unit are connected to the second SCHOLHODE, the CRT is connected to the modulation input of the projection CRT, and the block 1 is also connected wiring for pulses, the output of which is connected to the scan input of the transmitting television tube. 2. The device according to claim 1, of tl and chayu e with the fact that | In order to preserve the geometric similarity of a raster CRT and transmitting television tube, the optical system contains an anamorphic one (gigik, the axis of which is parallel to the raster scan of the frame.

Description

The invention relates to telecine, technology, and can be used to convert an image from a negative or positive film to a television video signal. The weight of the device's gnas is the day of a television film projection containing either a post-incidently placed light source, a film-projection mechanism, an optical system and a transmitting television tube, or a post-graphic projection electronic-nuchlographic tube (ILT), i.e. a traveling beam tube, a film recording mechanism, an optical system and a G1 J photomultiplier. The closest to the present invention is a television film projection device containing sequentially arranged projection CRT, a film recording mechanism, a spring system and a photo receiver unit, the output of which is connected to register a block as well as a sync generator. The photo receiving unit is designed as a photomultiplier (PMT), and the film-throwing mechanism is equipped with a GZ 3 film position sensor. However, the known devices have high requirements for the stability of film film stretching, which necessitates the introduction of special correction devices and sensors of the film feedback circuit. In addition, the use of photomultiplier tubes leads to the fact that the raster brightness level on the CRT screen must be sufficiently high, in the order of 60–57 that can be done by increasing the voltage of the second anode of the projected CRT to a value of 20 - 30 kV. The high level of accelerating voltage requires the application of special measures to protect service personnel from X-ray and radiation, which makes it difficult to install and carry out a routine inspection of the apparatus. The purpose of the invention is to squeeze the requirements for the stability of film movement, as well as to preserve the geometry of the similarity of raster images of a projection CRT and a transmitting television tube. The decree of the 1st circuit is achieved by the fact that the TV set includes a sequential projection CRT, 0202 film recording mechanism, the optical system and the photodetector unit, the output of which is connected to the input of the registering unit, as well as the synchronous generator, the photodetector unit is view of the transmitting television tube, the entered horizontal frequency doubler, the output of which is connected to the scan input of the projection CRT, is connected to the first output of the synchronizer, to the second output of the sync generator Cable Connects & us entered serially connected frame frequency divider and a beam blanking unit, the output of which is connected to the input motsul shsh projection CRT, and delay unit Shinji human & roimpulsov whose output is connected to an input of a television tube. In addition, the optical system contains anamorphic optics, the anamorphic axis of which is parallel to the raster scan line on the frame. The drawing shows a structural electrical diagram of a presable device. The device contains a projection cathode-ray tube 1, a film-bearing metsanism 2, an optical system 3, a transmitting television tube 4, a recording unit 5, a horizontal frequency doubler 6, a sync signal & 7, a beam blanking unit 8, frame frequency 9, a delay block 10 personnel sync pulleys. The device works as follows. On a projection screen of a CRT 1, a television raster is formed, which is optically connected with a film that is pulled through a film or coprotome mechanism (MRP) 2 using a lens or fiber optics (not shown) 2 The resulting image of a film frame is projected onto a photosensitive image using optical system 3 the surface (for example, the target of the video) of the transmitting TTV (PTT) 4 and the video signal generated in it is fed to the input of the recording unit. 5. As a recording unit 5, a video recorder, a video monitoring device, etc. can be used. In the proposed device, the light ekspozisi target PTT 4 is carried out once during the transmission of the full television frame and is produced during the transmission of the first half-frame of the television image, With the guard circuit of NON-SHINE definition nz6rv1- | : BS1Ya vertical in the device accents & no method Uvaeni line frequency projection CRT 1, discharged using bpoc 6 wavoyoy building Chao "OTbij which is controlled by the sync generator 7. So, ION ION diff of the projection CRT 1 SoC 6 arches protreosivnoy razkov ugly; As mentioned above, the Tstaei TSHT 4 exposure is performed for one time on the screen) is shown. through the 9 katsrov frequency division, up to a zeeyuyuyu gfy chereshkopolnoy exposure melkovki tvizhotachach) the images at the outlet of the pdt 4 are obtained by backing the potential of the potential penbey from the pdt 4 rendition relative to the recording (projection) of the light beam of a raster with an Ephoksha CRT1 PTT 4.

As in the device-phototype.ch: - the prepacked device is applied

 method of continuous transport of film in the frame window. Describe this method in TOM | that the film and the translucent raster have a counter movement and, in the proposed device, a one-time recording of the PTT 4 target, a raster on the PTT 4 target vertically, which significantly reduces the resolution of the TV image vertically. To eliminate this deficiency, in the optical system 3, use & Zooanna optics, the baseline of which is the perpendicular of the box that appears in the line scanner PTT 4. The above anamorphic optics allows for the layout of the frame and the Hia pattern of the PTT 4.

0

The advantages of a preference: the device under consideration consists in the realization of a real estate at the expense of the C | P1 of the requirements (stability to the transport of cinemascreens - an allowable change in the mutual speeds), and one film of the film and the light beam in the kafa preceptors, 5, 7% (for the prototype, the tolerance is pf dky; O, l4..O, 5%) in the absence of a device. To shrink film shrinkage film film shrinkage by 3% does not cause a deterioration of the lash parr. TV image and attitude | but a low Pitany voltage in the second anode translucent tube for

5 low, sipKOCTH and raster resolution requirements on the kinescope screen,

Claims (2)

1. DEVICE FOR TELEVISION FILM PROJECTION, include a beam blanking unit, the output of which is connected to the modulation input of the projection CRT, as well as a frame sync delay unit, the output of which is connected to the scan input of the transmitting television tube. 2. The device according to π. 1, which includes sequentially arranged further hems, which, in order to preserve the geometric resemblance of rasters I projection cathode ray tube (CRT), film transport mechanism,. an optical system and a photodetector unit, the output of which is connected to the input of the recording unit, as well as a projection CRT and a transmitting Television tube, the optical system contains anamorphic optics, the anamorphic axis of which is parallel to the raster scan line in the frame. f .. ... f h h Chhpg £ Ag / to - 9 1 ** ... ft tt 0 1 "G ho 1021020 2