CN104243945A - Single-machine dual-lens 3D projection machine - Google Patents
Single-machine dual-lens 3D projection machine Download PDFInfo
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- CN104243945A CN104243945A CN201410480239.3A CN201410480239A CN104243945A CN 104243945 A CN104243945 A CN 104243945A CN 201410480239 A CN201410480239 A CN 201410480239A CN 104243945 A CN104243945 A CN 104243945A
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Abstract
The invention provides a single-machine dual-lens 3D projection machine. A video signal split circuit is adopted, the same video source is intelligently segmented according to different 3D film sources and output by dual lenses, single-machine dual-lens 3D projections in a true sense are obtained, compared with a single ordinary 2D projection machine, identical video connection and power connection are achieved, and installation and wiring are greatly simplified. By the adoption of the single-machine dual-lens 3D projection machine, the video signal split circuit is adopted, the same video source can be segmented into two paths of video signals according to different types of the video sources and output by the dual lenses, and the maximal characteristic of the single-machine dual-lens 3D projection machine is that various existing 3D film source systems are supported; meanwhile, a pixel-level overall picture shift function is adopted, when a 2D film is watched, pictures completely coincide with one another, and the brightness in the 2D film watching process is doubled due to the dual lenses; when a 3D film is watched, discomfort caused by non-coincidence of long shot positions is eliminated.
Description
Technical field
The present invention relates to a kind of 3D projector, in particular, is a kind of unit twin-lens 3D projector.
Background technology
3D technology, according to whether wearing spectacles can be divided into spectacle and bore hole formula, because bore hole 3D technology exists the shortcomings such as resolution is low, viewing visual angle is little at present, is not also used widely.Therefore, the 3D technology of main flow mainly contains three classes: aberration formula, passive polarization type, active-shutter.Aberration formula is the early stage 3D technology occurred, because its colour loss is relatively more serious, just gradually replace by latter two 3D technology.Although active-shutter 3D technology is widely used, and polarization type 3D becomes current main flow 3D technology shoulder to shoulder, and it is inevitable film flicker because shutter glasses brings, and watches for a long time, is easy to allow people produce strong discomfort such as dizzy grade.Meanwhile, this 3D technology needs a secondary shutter 3 D glasses (namely needing to wear 3 D active eyeglasses), the price (original equipment manufacture price) between 500-900 unit of a pair of glasses, considerably increases the cost of viewing 3D.And polarization 3D technology, utilize light to have the feature of polarization, make the light in different polarization direction enter human eye simultaneously, completely avoid the spinning sensation glimmering and bring, the cost of polaroid glasses is very low simultaneously, greatly reduces viewing cost when many people watch 3D film.
Adopt the cinema system of polarization 3D technology, by special playback equipment, right and left eyes picture is carried out transmission respectively by Liang Tai projector, can be described as the projection of two-shipper twin-lens.Mainly there is following shortcoming: first, need to adopt special video playback apparatus output signal, also need Liang Tai projector, the line not only between equipment is quite complicated, and the cost of equipment is also very high, strongly limit the extensive use of polarization 3D technology.This special playback equipment+dual-projection system can only build use at some special occasions such as movie theatres, if the moving and rearrange of equipment will be carried out, install all very inconvenient.Secondly, two width pictures, when watching 2D film, cannot be accomplished to overlap completely by this polarization optical projection system.Therefore, during viewing 2D film, a wherein projector must be turned off, so not only cause equipment to waste, also because the closedown of a projector causes brightness to only have the half of two-shipper.Although this two-shipper polarization 3D optical projection system has 3D effect when watching 3D film, meeting not overlapping completely because of picture, and in film, (because the little picture of parallax overlaps during distant view) generation ghost image during some distant view, allows people not feel well.
The unit twin-lens 3D projector related in patent CN201110144005.8, though be unit, there is no too big difference with the two-shipper projection in current movie theatre actually, is only Liang Tai projector be fixed in integral type projection cabinet, common source.Though this projector simplifies installation and wiring loaded down with trivial details, but still existing problems: by upside-down mounting wherein projector realize picture coincidence and the distance between Liang Tai projector can be made to have a very large excursion due to the size of projected picture, use and operate very inconvenient.
Summary of the invention
The object of the invention is simplify install and wiring, easy to use and operate, support current existing various 3D film source standard, and when watching 2D film, reach the coincidence completely of picture, when making viewing 2D, brightness doubles, when watching 3D film, eliminating distant view place and not overlap the sense of discomfort brought.
Unit twin-lens 3D projector of the present invention, it is made up of video signal conversion circuit, vision signal split circuit, video processing circuit 1, video processing circuit 2, LED drive circuit 1, LED drive circuit 2, image display chip 1, image display chip 2, R/G/B LED group 1, R/G/B LED group 2, light engine 1, light engine 2, horizontal polarization sheet, vertical polarization sheet, the special curtain of polarized stereoscopic.
1. video signal conversion circuit
Because image display chip 1, image display chip 2 are pure digi-tal display devices, the effect of change-over circuit is the pure digi-tal high-definition signal in order to provide applicable image display chip, makes image display chip give full play of high-resolution advantage.The signal that conversion exports comprises the video synchronization signal such as video data process and the row needed for image display chip, field system chronizing impulse and data clock.
2. vision signal split circuit
Vision signal split circuit is formed primarily of video separation chip and some peripheral circuits.Video separation chip has following functions:
(1) vision signal exported by video signal conversion circuit is simultaneously to video processing circuit 1 and video processing circuit 2;
(2) vision signal exported by video signal conversion circuit is separated by odd-numbered frame picture, even frame picture, export odd-numbered frame picture (even frame picture) to video processing circuit 1, even frame picture (odd-numbered frame picture) exports video processing circuit 2 to;
(3) output signal according to video signal conversion circuit, control LED drive circuit 1 and LED drive circuit 2, completing the complementary colours display of R, G, B three-color LED light, such as: only light R lamp by controlling LED drive circuit 1, lighting G and B lamp by controlling LED drive circuit 2;
(4) the upper (lower) half range picture of frame picture video signal conversion circuit exported downwards (on) be stretched as entire picture, export video processing circuit 1 to; Under (on) half range picture is stretched as entire picture to upper (lower), exports video processing circuit 2 to;
(5) by video signal conversion circuit export a frame picture a left side (right side) half range picture to the right (left side) be stretched as entire picture, export video processing circuit 1 to; Right (left side) half range picture left (right side) is stretched as entire picture and exports video processing circuit 2 to;
(6) control video processing circuit 1 or video processing circuit 2 respectively, the entirety of the display frame in image display chip 1 or image display chip 2 is carried out left, to the right, upwards, downward Pixel-level moves.General principle is: first, and projector's remote control equipment sends instruction and selects video processing circuit 1 or video processing circuit 2; Remote control equipment is sent pixel shift instruction again and is moved by the Pixel-level that directionkeys carries out picture, and often trigger a shift instruction, picture moves integrally 1 pixel or N number of pixel (N parameter can be arranged) herein;
(7) picture spinfunction: control video processing circuit 1 or video processing circuit 2 respectively, make the display frame in image display chip 1 or image display chip 2 carry out clockwise with picture central point or be rotated counterclockwise, in rotary course, ensure that the sum of all pixels of picture does not change.General principle is: first, and projector's remote control equipment sends instruction and selects video processing circuit 1 or video processing circuit 2; Remote control equipment sends picture rotate instruction again and by dextrorotation turn key or be rotated counterclockwise the rotation that key carries out picture, often triggers a subframe rotate instruction, picture integral-rotation certain angle (this angle value can be arranged);
(8) keystone transformations function: control video processing circuit 1 or video processing circuit 2 respectively, make the display frame in image display chip 1 or image display chip 2 with under picture (on) limit is that reference levels line is just carrying out (bearing) keystone transformations.General principle is: first, and projector's remote control equipment sends instruction and selects video processing circuit 1 or video processing circuit 2; Remote control equipment is sent keystone transformations instruction again and is carried out the keystone transformations of picture by trapezoid transfer key or negative keystone transformations key.Often trigger a trapezoid transformation directive, be reference levels line below with picture, height reduces a pixel or N number of pixel (N parameter can be arranged) herein; Often trigger once negative keystone transformations instruction, with picture top for reference levels line, height reduces a pixel or N number of pixel (N parameter can be arranged) herein.
3. video processing circuit 1, video processing circuit 2
Video-data processing circuit, by a frame of digital vedio data of vision signal split circuit, is adjusted to the data needed for image display chip.
4. LED drive circuit 1, LED drive circuit 2
LED drive circuit not only produces the switching pulse of LED, the fluorescent lifetime of control LED and luminous intensity, also provides the driven of drive current realization to R, G, B LED.
5. image display chip 1, image display chip 2
Image display chip is the light signal picture signal of number format being converted to corresponding grey scale.
6. R/G/B LED group 1, R/G/B LED group 2
R/G/B LED group uses single or many great power LEDs, and for 3D projector provides, the life-span is long, colour gamut is wide, the stabilized light source of high-speed switch.
7. light engine 1, light engine 2
Light engine uses various optical element that the light of LED is carried out even light, projects on image display chip after closing the process such as look, by projection lens, the light after projection chip reflection is projected screen, completes and be finally shown as picture.
8. vertical polarization sheet, horizontal polarization sheet
Place the polarizer in level (vertically) direction at light engine 1 output, make it project level (vertically) polarised light, place the polarizer in vertical (level) direction at light engine 2 output, make it project vertically (level) polarised light.
9. the special curtain of polarized stereoscopic
When two camera lenses project on metal screen simultaneously, there is the reflection that polarization direction is constant.When wearing the film that the polarising glass viewing with horizontal direction (left eye) and vertical direction (right eye) projects on screen, every eyeglass due to polarising glass can only receive the picture of a polarization direction, therefore, right and left eyes just can receive two width pictures of mutual vertical polarization characteristic, then through brain compound stereoscopic image.
Present invention employs vision signal split circuit, same video source is carried out intelligent scissor according to different 3D film sources, exported by twin-lens, the unit twin-lens 3D become truly projects, with common 2D separate unit projector, there is identical video to be connected and to be connected with power supply, enormously simplify installation and wiring.The present invention adopts vision signal split circuit, can dissimilar according to various video source, and video source is divided into two-path video signal, then is exported by two camera lenses, its maximum feature supports current existing various 3D film source standard.Meanwhile, adopting the overall picture shift function of Pixel-level, when watching 2D film, reaching the coincidence completely of picture, owing to adopting twin-lens, when making viewing 2D, brightness doubles; When watching 3D film, eliminating distant view place and not overlap the sense of discomfort brought.
Accompanying drawing explanation
Fig. 1 is system of the present invention composition schematic diagram.
Embodiment
In conjunction with explanation accompanying drawing 1, unit twin-lens 3D projector of the present invention, it is made up of video signal conversion circuit, vision signal split circuit, video processing circuit 1, video processing circuit 2, LED drive circuit 1, LED drive circuit 2, image display chip 1, image display chip 2, R/G/B LED group 1, R/G/B LED group 2, light engine 1, light engine 2, horizontal polarization sheet, vertical polarization sheet, the special curtain of polarized stereoscopic.
First change output by video signal conversion circuit and comprise the video synchronization signals such as row, field system chronizing impulse and data clock needed for video data process and image display chip.
Following process is made again: the vision signal that video signal conversion circuit exports by (1) is separated by odd-numbered frame picture, even frame picture by vision signal split circuit, export odd-numbered frame picture (even frame picture) to video processing circuit 1, even frame picture (odd-numbered frame picture) exports video processing circuit 2 to.(2) output signal according to video signal conversion circuit, control LED drive circuit 1 and LED drive circuit 2, completing the complementary colours display of R, G, B three-color LED light, such as: only light R lamp by controlling LED drive circuit 1, lighting G and B lamp by controlling LED drive circuit 2.(3) the upper (lower) half range picture of frame picture video signal conversion circuit exported downwards (on) be stretched as entire picture, export video processing circuit 1 to; Under (on) half range picture is stretched as entire picture to upper (lower), exports video processing circuit 2 to.(4) by video signal conversion circuit export a frame picture a left side (right side) half range picture to the right (left side) be stretched as entire picture, export video processing circuit 1 to; Right (left side) half range picture left (right side) is stretched as entire picture and exports video processing circuit 2 to.(5) control video processing circuit 1 or video processing circuit 2 respectively, the entirety of the display frame in image display chip 1 or image display chip 2 is carried out left, to the right, upwards, downward Pixel-level moves.(6) picture spinfunction: control video processing circuit 1 or video processing circuit 2 respectively, make the display frame in image display chip 1 or image display chip 2 carry out clockwise with picture central point or be rotated counterclockwise, in rotary course, ensure that the sum of all pixels of picture does not change.(7) keystone transformations function: control video processing circuit 1 or video processing circuit 2 respectively, make the display frame in image display chip 1 or image display chip 2 with under picture (on) limit is that reference levels line is just carrying out (bearing) keystone transformations.
Again by the frame of digital vedio data of video-data processing circuit by vision signal split circuit, be adjusted to the data needed for image display chip.
LED drive circuit not only produces the switching pulse of LED, the fluorescent lifetime of control LED and luminous intensity, also provides the driven of drive current realization to R, G, B LED.
Image display chip is the light signal picture signal of number format being converted to corresponding grey scale.
R/G/B LED group uses single or many great power LEDs, and for 3D projector provides, the life-span is long, colour gamut is wide, the stabilized light source of high-speed switch.
Light engine uses various optical element that the light of LED is carried out even light, projects on image display chip after closing the process such as look, by projection lens, the light after projection chip reflection is projected screen, completes and be finally shown as picture.
Place the polarizer in level (vertically) direction at light engine 1 output, make it project level (vertically) polarised light, place the polarizer in vertical (level) direction at light engine 2 output, make it project vertically (level) polarised light.
When two camera lenses project on metal screen simultaneously, there is the reflection that polarization direction is constant.When wearing the film that the polarising glass viewing with horizontal direction (left eye) and vertical direction (right eye) projects on screen, every eyeglass due to polarising glass can only receive the picture of a polarization direction, therefore, right and left eyes just can receive two width pictures of mutual vertical polarization characteristic, then through brain compound stereoscopic image.
Claims (5)
1. a unit twin-lens 3D projector; Comprise: video signal conversion circuit, vision signal split circuit, video processing circuit 1, video processing circuit 2, LED drive circuit 1, LED drive circuit 2, image display chip 1, image display chip 2, R/G/B LED group 1, R/G/B LED group 2, light engine 1, light engine 2, horizontal polarization sheet, vertical polarization sheet, the special curtain of polarized stereoscopic.
2. as claimed in claim 1, it is characterized in that: the signal received conversion exports as comprising the row needed for video data process and image display chip by (1) video signal conversion circuit, the video synchronization signal such as field system chronizing impulse and data clock, (2) vision signal exported by video signal conversion circuit by vision signal split circuit again gives video processing circuit 1 and video processing circuit 2 simultaneously, (3) video-data processing circuit is again by a frame of digital vedio data of vision signal split circuit, be adjusted to the data needed for image display chip, (4) by LED drive circuit effect R, G, B LED group operates, (5) picture signal of number format is converted to the light signal of corresponding grey scale by image display chip, (6) R/G/B LED group 3D projector provides stabilized light source, (7) completed by light engine and be finally shown as picture, (8) polarizer of horizontal or vertical direction is placed respectively at light engine 1 and light engine 2 output, it is made to project level or orthogonal polarized light, (9) when two camera lenses project on metal screen simultaneously there is the constant reflection in polarization direction in the special curtain of polarized stereoscopic.
3. as claimed in claim 2, vision signal split circuit is formed primarily of video separation chip and some peripheral circuits, it is characterized in that: the vision signal that video signal conversion circuit exports by (1) is simultaneously to video processing circuit 1 and video processing circuit 2, (2) vision signal exported by video signal conversion circuit is by strange, even frame picture, be separated, export odd-numbered frame picture (even frame picture) to video processing circuit 1(video processing circuit 2), (3) output signal according to video signal conversion circuit, control LED drive circuit 1 and LED drive circuit 2, complete R, G, the complementary colours display of B three-color LED light, such as: only light R lamp by controlling LED drive circuit 1, G and B lamp is lighted by controlling LED drive circuit 2, (4) the upper (lower) half range picture of frame picture video signal conversion circuit exported downwards (on) be stretched as entire picture, export video processing circuit 1(video processing circuit 2 to), (5) by video signal conversion circuit export a frame picture a left side (right side) half range picture to the right (left side) be stretched as entire picture, export video processing circuit 1(video processing circuit 2 to), (6) video processing circuit 1 or video processing circuit 2 is controlled respectively, display frame entirety in image display chip 1 or image display chip 2 is carried out left, to the right, upwards, downward Pixel-level moves, (7) picture rotates, control video processing circuit 1 or video processing circuit 2 respectively, the display frame in image display chip 1 or image display chip 2 is made to carry out clockwise with picture central point or be rotated counterclockwise, in rotary course, ensure that the sum of all pixels of picture does not change, (8) keystone transformations, control video processing circuit 1 or video processing circuit 2 respectively, make the display frame in image display chip 1 or image display chip 2 with under picture (on) limit is that reference levels line is just carrying out (bearing) keystone transformations.
4. as claimed in claim 2, LED drive circuit produces the switching pulse of LED, the fluorescent lifetime of control LED and luminous intensity, and provides the driven of drive current realization to R, G, B LED.
5. as claimed in claim 2, light engine uses various optical element that the light of LED is carried out even light, projects on image display chip after closing the process such as look, by projection lens, the light after projection chip reflection is projected screen, completes and be finally shown as picture.
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| CN201410480239.3A CN104243945A (en) | 2014-09-19 | 2014-09-19 | Single-machine dual-lens 3D projection machine |
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Application publication date: 20141224 |