CN1127456A - Primary colors type color stereo television system - Google Patents

Abstract

The color stereoscopic television system, including television programme production, transmitting and receiving system, is completely compatible with existent color television system and high-difinition digital television system in future, and is composed of three primary color stereoscopic camera, transmitter, color television receiver, colour filter glasses or columnar screen. Said system can directly use general colour television receiver to watch stereoscopic television programme.

Description

Primary colors type color stereo television system

The present invention relates to a kind of color solid television program designing of adopting the primary colours principle design, transmit and receive system.Particularly a kind of can be compatible fully with existing colourcast system, can directly use ordinary color tv set to watch the stereoscopic TV broadcast system of three-dimensional television.

Since the eighties, the West Germany and the U.S. have just carried out the work of piloting of spatical television set, and Japan, the Soviet Union and some countries of West Europe also carry out the experimental study of stereoscopic TV in succession.China begins to enter this field from early eighties, and since 9 years, Xi'an TV station took the lead in releasing the stereoscopic TV broadcast program at home, and developed second generation stereo-television system in succession.9 years, Tianjin dimension display technologies research institute of institute of civil aviaton succeeded in developing three-dimensional colour TV practical technique system.

The stereoscopic TV of piloting is the earliest finished in 1981 in 1983 by the big Leah of Austria, West Germany and the U.S..Basic principle is to make special glasses with two kinds of filter, and require in two video camera fronts also each with a kind of filter of color as redness and blue look filter.At display end red signal and blue Signal Separation are come, and be deferred to and just shown after blue signal shows some/one second.As long as spectators put on special red blue glasses like this, just can see the stereo image of black and white.Because this scheme can be seen black and white and incomplete stereo colour image, a kind of design that replaces red blue glasses with polarising glass (or liquid crystal glasses) has just appearred afterwards.This design requires spectators to put on the polarizer glasses of controlling with electronic switch, will be subjected to the electronic switch Synchronization Control of certain frequency between shooting end, video picture end and the glasses simultaneously.Promptly when the moment that gamma camera videotapes, the right gamma camera is worn to be ended, and at this moment the developing end only shows the image on the left side, and the left side eyeglass of polarizer is opened, and the right is closed.In another moment, then the each several part on the left side is all closed by electronic switch, the each several part work on the right, the image on the right of obtaining.Take turns to operate like this, because the frequency of electronic switch is enough high, so just obtained the continuous stereo image of a width of cloth width of cloth.But this design will transmit with the frequency bandwidth of common TV, because field frequency only between 50-60, that is to say every the fine picture that can only watch 25 to 30 of per seconds of eye, flicker is serious.So just occurred the another kind of scheme of same principle again, this scheme is in order to eliminate flicker and don't to enlarge frequency bandwidth, adopted the number of scanning lines that reduces every width of cloth picture, enlarge the way of per second scanning number of fields, so just solved the design's flicker problem, but owing to reduced every number of scanning lines, definition but has been subjected to serious damage.Crucial still this system needs the optics that the three is synchronous---electronic switch, and people experience very complicated and inconvenient.At this shortcoming, so propose an interlacing formula polarization stereo TV scheme again.This scheme is, and all to be the principle that adopts the scanning of interlacing formula according to general TV come two images interlacing to show with odd and even number is capable respectively, and then on display screen with one deck each other the polarization film baffle of right angle polarization characteristic distinguish very, even image of going.As long as spectators put on the polarising glass at right angle each other like this, just can under situation, watch stereoscopic TV without electronic switch.But in actual applications,, only reach 50-60, so flicker is serious, so a kind of design that does not promptly increase line frequency but also can double field frequency just occurred not only because the field frequency of normal tv is too low.Up to now, this design has outstanding advantage, and is all better than preceding several schemes, is the more promising a kind of scheme of it seems at present.But this system still needs to wear glasses to watch, and is concerning spectators, very inconvenient.In order to remove spectators' glasses from, the scientist of various countries has moved many brains, has proposed many schemes, just inspired in the principle of stereoscopic photograph at last, proposes a series of stereoscopic TV design that need not wear glasses.What at first put forward is exactly rush-harvesting and rush-planting picture tube method.So-called stereoscopic photograph principle is exactly by a series of bar graph pictures of printing on paper, and form behind the buttress shaft shape plastic lens on multiple on the surface.Because the even image in the strip image is formed a width of cloth picture, the odd number image is formed another width of cloth picture, but two images are variant slightly, and odd even bar graph picture alternately, its width matches with the column plastic lens again, so when people watch photo, because buttress shaft shape plastic lens has refraction, just make people's left eye can only see the width of cloth of two width of cloth in drawing, right eye then can only be seen another width of cloth.Because this two width of cloth painter's paraphernalia has the parallax characteristic, thereby just make and watch the people to produce third dimension.According to this principle, people have descended the time again on the structure of phosphor screen and picture tube, adopted the special bielectron rifle picture tube of similar chromoscope, its two electron guns have a certain degree mutually, make the planar mask of two electron beams intersection by the front, fluorescent screen, project on the phosphor screen with different angles then, this phosphor screen is different with common optical screen, it is the transparent screen of being made by many semicircle lens that are mutually certain angle that principle according to stereoscopic photograph designs, electron beam just in time is mapped to respectively after by shadow mask on separately the half-cylindrical transparent screen, the result has just formed two width of cloth pictures of being made up of the left visual bar and the right visual bar of certain angle mutually, the effect of spectators' this moment by the half-cylindrical lens pillar in phosphor screen surface just can resemble to watch and watch the stereo image of continuous motion the stereoscopic photograph.Development test proves, adopt the stereo-television system of this scheme, to utilize a plurality of gamma cameras to videotape, send after each road signal is encoded, receiving terminal decode again the back in the road signal to project the design effect that volume visualization shields in certain sequence in turn respectively with many television projectors better.But complete equipment more complicated, only being adapted to large-scale occasion uses, another kind of design has appearred again for this reason, the volume visualization screen of this scheme has only one side that buttress shaft shape lens are arranged, and another side is flat, therefore it becomes the single channel TV signal to launch two-way or the picture inversion of multichannel bar signal earlier by photoelectric conversion device, then as long as behind the lens pillar, just can obtain stereo image on general television set is pre-installed.Because this scheme is applicable to wired or wireless broadcasting, and can obtain better effects, so paid attention to very much.But because this scheme is identical a bit with the design of interlacing formula polarizer principle, different has just changed the polarization film baffle into the column screen, spectators' glasses have gone to disappear, like this, the flicker important disadvantages still fails to be overcome, if also double the way of field frequency with normal line frequency, so, poor definition, the serious problem of interline flicker still can not solve.Because the stereoscopic TV design that occurred is not that structure is numerous and diverse, make and debug difficulties costs an arm and a leg exactly, be difficult to popularization, what have can only use at special occasions, also have can not with existing multiple display modes compatible, and exist the problem of image quality difference.

Task of the present invention provide a kind of simple in structure, cost is low, easy to manufacture, the color solid television program designing of being convenient to promote, transmit and receive system.Native system does not make any changes to present transmission of television, receiving system, all is better than existing design at aspects such as colour reproduction, image flickers.And be applicable to numeral, high definition and laser TV system in the future.

The present invention is made up of three primary colors stereo camera, transmitter, color TV set and goggles with color filter, its operation principle is such, at first absorb the image of different colours and different viewing angles by the three primary colors stereo camera, send by the general transmit machine then, receiving terminal uses ordinary color tv set to watch and gets final product, fine in order to make different colors arrive different eyes respectively, here used goggles with color filter, different colors can be by the fine image that synthesizes original color of eye, has also reduced original position effect simultaneously.This design has only gamma camera different with the general color television system, and other parts and general color television system are identical, just need wear glasses and watch.The foremost of this gamma camera have big object lens (can certainly) be responsible for picked-up scenery image, the back is two transversely arranged branch object lens, and is separated by a distance between them, just is equivalent to two eyes of people, can be from different angle picked-up scenery.There is a green color filter back in the back of right side object lens again, only allows green light to pass through, and the green color filter back is exactly a green camera tube, absorbs green image specially.The back of dividing object lens in the left side is a prism, is responsible for light is divided into two parts, and a part is passed the red color filter that prism arrives its back, arrives red camera tube then.Another part then is reflected to following level crossing, arrives blue look camera tube by plane mirror to blue look colour filter again.(blue look camera tube can certainly directly be installed without level crossing) and then the synthetic next stage of delivering to of three kinds of picture intelligences.At receiving terminal as long as to put on left eye be aubergine to the spectator.Right eye can be seen stereo colour image true to nature for green glasses.Also can be designed as the stereo-television system that to wear glasses.The gamma camera of this system still adopts a big object lens imaging (or need not), but little object lens are the camera tubes of three transversely arranged, corresponding red, green respectively, blue three primary colors, so just can finish videotaping of different angles.Then use the picture tube of vertical bar arrangement at the developing end, on every group of vitta of picture tube, make the lens of a buttress shaft shape (or semicircle), two eyes are fine about so just can delivering to the image of red, green, blue three kinds of different colours respectively, and become a width of cloth width of cloth stereo image similar to stereoscopic photograph.Can not watch the purpose of stereoscopic TV thereby realizing does not wear glasses yet.

Claims (4)

1. primary colors type color stereo television system is by three primary colors stereo camera, transmitter, color TV set, goggles with color filter or column screen are formed, at first absorb the image of different colours and different visual angles by the three primary colors stereo camera, send by the common TV transmitter, receiving terminal is the general color television receiver, for two eyes about different colors is arrived respectively, spectators will wear the primary colors type goggles with color filter or install the column screen additional on the ordinary color tv set screen; It is characterized in that using three kinds of primary colours records, transmission and reappear stereo image, compare with existing colourcast system, different and need to increase primary colours filter or the column screen except that gamma camera, other device is all identical, can with existing colored radio data system compatibility.

2, three primary colors stereo camera device according to claim 1, it is characterized in that: optical system is by big object lens (also can), two transversely arranged branch object lens, (two eyes that standoff distance is equivalent to the people are fine), Amici prism, primary colours colour filter are formed, or three transversely arranged branch object lens (standoff distance is equivalent to two eyes of people) are formed; The right side divides the object lens back that a green color filter is arranged, be green camera tube behind the colour filter: it is a prism that the object lens back is divided in the left side, light is divided into two parts, a part is passed the red color filter that prism arrives its back, arrive red camera tube then, another part then is reflected to following level crossing, arrives blue look camera tube by flat mirror reflects to blue look colour filter again.Circuits System is identical with existing gamma camera.

3, goggles with color filter device according to claim 1 is characterized in that: left eye is an aubergine, and right eye is green.

4, column screen device according to claim 1 is characterized in that: on the kinescope screen that vertical bar is arranged, make a semicircle (or cylindricality) lens according to different size corresponding to each group phosphor strip, and form a column screen by numerous lens.Column screen adheres to the phosphor screen surface, and about red, green, blue three kinds of primary colours images are delivered to respectively two, and realization is not worn glasses and can be watched stereoscopic TV yet.