KR101142176B1 - 3-Dimension stereograph providing apparatus and method thereof - Google Patents

Abstract

The present invention relates to a three-dimensional image providing device and a method for improving economics, ease of use, and ease of use compared to a conventional shutter method or polarization method. By applying a new method to simplify the configuration of the view blocking means and to expand the view blocking area has an excellent effect that can provide an autostereoscopic 3D image in an economic manner.

Description

Stereoscopic image providing apparatus and method thereof {3-Dimension stereograph providing apparatus and method

The present invention relates to a stereoscopic image providing apparatus and a method thereof, and more particularly, to a stereoscopic image providing apparatus and a method for improving economics, ease of use and ease of use compared to the conventional shutter method and polarization method.

The technology related to stereoscopic image was developed in a relatively long time (the method using a reflector in the 1830s, the color difference, polarization, and lenticular lens method used in the 1920s) was used in various fields, but the complexity of the implementation and the viewing Due to the necessity of additional equipment and high content production cost, it has not been spread in earnest for a long time. However, the recent rapid development of digital technology has improved the convenience and cost of stereoscopic image production, and the demand for the market expecting a new image effect is increasing 3D image is rapidly attracting attention.

Movies, TV content, and games with 3D effects have already been in the spotlight, and devices for providing the same have become increasingly familiar to the general public. Due to the distribution of high quality contents and the falling prices of 3D image reproducing apparatuses, 3D TVs and 3D graphics cards for PCs are rapidly spreading.

The apparatus for providing such a stereoscopic image basically provides different images to both eyes. For this purpose, the red image is provided as a blue lens and the blue image is provided as a red lens using classic red-blue glasses. Method), a method of providing a separate image to each eye using polarizing glasses according to the polarization rotation direction (polarization method), and the image synchronized with the shutter operation using the liquid crystal shutter glasses to selectively There is a way to provide (shutter method). Of course, in addition to the various methods that do not use glasses, such as parallax barrier method and lenticular method is discussed, but still difficult to manufacture and high efficiency is left out.

Currently, practically popular technologies are polarization method and shutter method, and polarization method is used to provide a three-dimensional effect to a large number of viewers because of the complicated structure of the reproduction device and the high price but the low price of the glasses. In general households with a small number of viewers, the price of glasses is relatively high, but the shutter system is simple and inexpensive. 3DTVs, which are commercially available and widely commercialized recently, use a shutter method.

In the case of the shutter method, the liquid crystal shutter is configured in the three-dimensional glasses, and the left and right eye images of the display for reproducing the image are synchronized with the operation of the liquid crystal shutter. When only the right eye image is provided, the left liquid crystal shutter of the glasses is blocked so that the playback image is provided only to the right eye.

Glasses having such a liquid crystal shutter require a complicated driving part due to the characteristics of the liquid crystal requiring a relatively high driving voltage. In addition, liquid crystal shutter type glasses in which TNLC (Twisted Nematic Liquid Crystal) is generally used are difficult to operate at high speed, and the driving is limited due to flickering because both eyes are blocked for accurate image selection. This will occur. In addition, in the case of the liquid crystal shutter, the image is transmitted through the open shutter, but even when fully open, the transmittance is relatively low at about 39% (1% or less when blocked), and the image provided by such low permeability and flickering is very dark. And fatigue.

Recently, portable multimedia playback devices have been widely used, and as a convergence or mashup technology incorporating communication, multimedia playback, and various application program driving functions into one device, smart phones having various functions have been in the spotlight. As a new function that can be added to such a smart phone, a 3D stereoscopic image providing function is receiving high attention.

However, as described above, in the case of using the shutter glasses, the expensive glasses must be carried separately, so the convenience and the risk of breakage are high. Will increase. Therefore, the application of auto glasses such as lenticular method or parallax barrier method is considered, but there is a possibility of quality deterioration when providing 2D image because the variation of the motion or stability of motion is low and the configuration of the display must be changed. Uneasy.

As a result, when providing 3D video using current glasses, the cost of the playback unit is high or the cost of the glasses is high, and it is difficult to provide high quality images, and in the case of the glasses-free method, the composition is complicated and the stability is difficult, so that it is difficult to produce a realistic product. to be.

An object of the embodiments of the present invention for improving the above-mentioned problem is to simplify the configuration of the view blocking means by applying a new way to provide a brighter light than the image provided near the eye to temporarily block the view of the eye. It is an object of the present invention to provide a stereoscopic image providing apparatus and a method for providing an autostereoscopic stereoscopic image in an economical manner by expanding the view blocking area.

Another object of the embodiments of the present invention is to determine the brightness of the provided image based on the signal of the image controller to adjust the brightness of the light source for blocking the field of view in real time. It is to provide an apparatus and method for providing a stereoscopic image to maximize the contrast ratio.

Still another object of the embodiments of the present invention is to provide a stereoscopic image providing apparatus that can be easily applied to a playback device that does not support stereoscopic image providing scalability to view stereoscopic image through a glasses-free method or a simple polarized glasses and its To provide a way.

Still another object of the embodiments of the present invention is to add a stereoscopic image function while minimizing the configuration change by utilizing a sensor applied basically to a portable multimedia playback device including a smart phone, and through the external means of the minimized configuration The present invention provides a stereoscopic image providing apparatus and a method for adding a function.

Another object of the embodiments of the present invention is to determine the eyeball position of the user through facial recognition of the user to selectively provide a view blocking light only to the corresponding point to more effectively block the view to provide a three-dimensional image An image providing apparatus and a method thereof are provided.

In order to achieve the above object, the stereoscopic image providing apparatus according to an embodiment of the present invention is a stereoscopic image providing apparatus configured in a display for providing a left and right eye image alternately for a three-dimensional effect, in the exposed area of the display A left eye light emitting unit and a right eye light emitting unit arranged to direct both eyes of the viewer and selectively emitting light to block a view of the directing viewer; And a light emission driver for receiving the synchronization signal from the stereoscopic image reproducing means for providing the left and right eye images to the display and generating an operation timing considering the afterimage, thereby selectively operating the left eye light emitting part and the right eye light emitting part.

The stereoscopic image providing apparatus according to another exemplary embodiment of the present invention is a stereoscopic image providing apparatus applied to a display apparatus for providing an image in an internal and external manner, and is arranged to direct both eyes of a viewer to an exposed area of the display apparatus. A left eye light emitting unit and a right eye light emitting unit which selectively block light by directing light, thereby blocking a viewer's field of view; An image and synchronization providing unit installed in the display device to alternately provide a left eye image and a right eye image, and output a synchronization signal accordingly; And an emission driver configured to selectively generate an operation timing considering an afterimage according to a synchronization signal output through the image and the synchronization providing unit, and selectively operate the left eye light emitting unit and the right eye light emitting unit.

In addition, the stereoscopic image providing method according to another embodiment of the present invention is a stereoscopic image providing method for selectively blocking the left and right eye images by receiving a synchronization signal from the display for providing a left and right eye image, the display provides a left eye image A right eye view blocking step of blocking a right eye's field of vision by operating a light blocking unit disposed inside and outside the display within the left eye image providing period so as to direct the right eye according to the synchronization signal; When the display provides a right eye image, a left eye view blocking step of blocking a left eye's field of vision by operating a light blocking unit disposed inside and outside the display within the right eye image providing period so as to direct the left eye according to the synchronization signal. It is made, including.

The apparatus and method for providing a stereoscopic image according to an exemplary embodiment of the present invention simplify the configuration of the view blocking means by applying a new method of providing a brighter light than the provided image near the eyeball so as to temporarily block the eye's field of view. Extending the field-blocking area has an excellent effect of providing autostereoscopic images in an economical manner.

In the stereoscopic image providing apparatus and method thereof according to an embodiment of the present invention, the brightness of a provided image is grasped based on a signal of an image controller to adjust the brightness of a light source for blocking a field of view in real time to block the view at an optimal brightness. It is effective to reduce the burden and maximize the contrast ratio of the image.

The stereoscopic image providing apparatus and method thereof according to an exemplary embodiment of the present invention can be easily applied to a playback apparatus that does not support stereoscopic image providing, thereby providing a low-cost and easy-to-use extensibility for viewing stereoscopic images through a glasses-free method or simple polarized glasses. There is an extremely good effect provided in the way.

Device and method for providing a stereoscopic image according to an embodiment of the present invention can add a stereoscopic image function while minimizing the configuration change by utilizing a sensor applied basically to a portable multimedia playback device including a smart phone, the exterior of the minimized configuration There is an effect that can add a three-dimensional image function through the means.

An apparatus and method for providing a stereoscopic image according to an exemplary embodiment of the present invention detect a user's eyeball position by recognizing a face of a user and selectively provide a view blocking light only to a corresponding point to selectively block a field of vision so that the stereoscopic image can be selectively blocked. There is an effect that can provide a video.

An apparatus and method for providing a stereoscopic image according to an exemplary embodiment of the present invention are now widely available by allowing a stereoscopic recognition using only glasses of a non-glass type or a relatively inexpensive and easy-to-manage polarized glasses instead of a relatively expensive and difficult to manage shutter type stereoscopic glasses. There is an effect that can replace the shutter-type stereoscopic glasses of the 3D providing device.

1 is a stereoscopic image providing system according to an embodiment of the present invention.
2 is another example of a stereoscopic image providing system according to an exemplary embodiment of the present invention.
3 is a block diagram of a stereoscopic image providing system according to an exemplary embodiment of the present invention.
4 is an example of a stereoscopic image providing system according to another exemplary embodiment of the present invention.
5 is a configuration diagram of a stereoscopic image providing system according to another exemplary embodiment of the present invention.
6 is a conceptual diagram showing a view blocking method according to another embodiment of the present invention.
7 is a timing diagram showing an operation timing of a light emitting unit according to an exemplary embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.

First, Figure 1 shows a conceptual diagram of a stereoscopic image providing system according to an embodiment of the present invention. In the illustrated case, the right eye light emitting unit 51 and the left eye light emitting unit 52 are configured in the portable multimedia player 1 so that the display 5 of the portable multimedia player 1 is left and right. When providing an eye image, the right eye light emitter 51 and the left eye light emitter 52 operate at a synchronized timing to watch a video provided by the corresponding display 5. Alternating with 132 provides light for blocking view so that stereoscopic video can be viewed.

In the case of the conventional stereoscopic image providing system, the polarization method or the shutter method is used, so the image is dark due to low transmittance. In the polarization method, the configuration of the stereoscopic image reproducing unit is complicated and the price is high. Since the stereoscopic glasses must be used, the image quality may not be reduced due to driving limitations, such as a large amount of damage in case of damage, a slow response of the liquid crystal, and flickering. Complex and poor power efficiency In particular, when the 3D image providing function is added to the portable multimedia playback device 1, an expensive shutter-type glasses that require a separate power source must be additionally carried, causing inconvenience to users and a high risk of damage to the glasses. none.

However, the illustrated method according to the embodiment of the present invention uses a new method of blocking the eye's field of view by directly or indirectly providing light to the eye, rather than physical light filtering or blocking. That is, as shown in the figure, the light emitting units 51 and 52 which are arranged to direct the viewer's left eye and right eye, respectively, are formed in some of the exposed areas of the portable multimedia playback device 1, and the portable multimedia playback device ( The pair of light emitting units 51 and 52 are alternately operated according to a synchronization signal for the left eye image and the right eye image provided by 1). The light emitting driving unit for operating the pair of light emitting units 51 and 52 may be a physical component embedded in the portable multimedia player, or may be a component installed by software.

When the left eye image is displayed on the display 5 according to the operation of the light emission driver, the right eye light emitter 51 directed to the right eyeball 132 operates to block the view of the right eyeball 132 so as to block the left eye. When the right eye image is displayed through the left eye image, the left eye light emitting unit 52 directed to the left eye 131 operates to block the view of the left eye 131 to the right eye image through the right field of view. By allowing the viewer to recognize the stereoscopic image combined with the left and right images in his brain.

Substantially, the operation of the light emitting units 51 and 52 that are directed to the respective eyeballs 131 and 132 to block one eye's field of view is to use a principle that a less bright image is not seen when the ambient light is bright. In particular, when viewing a high-speed image of 60 frames per second, if the light emitting units 51 and 52 are momentarily operated at a level slightly brighter than the image identified by the field of view, one eye field of vision is effectively minimized while minimizing eye fatigue. Can be blocked. In this case, since the brightness of the light provided to the eyeball is somewhat brighter than the brightness provided when watching the image, there is no significant difference from the case of watching the image under illumination.

In particular, in the case of blocking the view by light, the light is not provided for every period in which an image for one eye is provided, but a light is instantaneously provided for a shorter time in consideration of the afterimage of a human eye. Since light is alternately provided instantaneously and continuously, the variation in the brightness of both sides is also small, thereby providing a similar level of viewing environment compared to the shutter method.

In addition, in the exemplary embodiment of the present invention, since the image is provided 100% to the viewer's eye when the light emitters 51 and 52 do not operate, the image quality is greatly reduced compared to the shutter method having a transparency of about 39%. In addition to reducing the brightness of the image as the image is provided to each eye only for half of the viewing time, there is an advantage that can be improved as a whole.

In addition, when actively controlling the light quantity of the light emitting units 51 and 52 in a manner linked to the brightness of the provided image, the contrast ratio of the image can be improved by reducing the light amount of the light blocking unit for blocking the view when the image is dark. When the amount of light of the light emitting units 51 and 52 is actively controlled in a manner linked to the brightness of the light emitting unit, the appropriate light emitting unit brightness can be selected. As a result, the realistic image is brighter and clearer than the shutter or polarization method.

In particular, the brightness information of the image can be easily obtained because most digital image reproducing apparatuses, such as a portable multimedia reproducing apparatus, basically have a function of grasping the brightness information of the image. In order to adjust the brightness of the illuminance sensor (6) to check the external illuminance is basically configured (this is also applied to the recent LCD, PDP TV is basically applied), it can be easily checked through this, and also through the camera (7) You can get it.

FIG. 2 is a variation of the embodiment configured in FIG. 1 and shows an example of easily adding a stereoscopic image providing function when the portable multimedia playback apparatus 2 has only a general 2D image providing function without a stereoscopic image providing function. Of course, it can be similarly applied to the case having a stereoscopic image providing function.

As shown, the right eye light emitter 61 and the left eye light emitter 62 are arranged to direct each eye of the viewer and have a three-dimensional interface with an interface 63 connected to the standard interface of the portable multimedia playback device 2. The image providing accessory 60 may be provided.

The stereoscopic image providing accessory 60 receives a synchronization signal (and a signal including image brightness information and illuminance information) from the portable multimedia playback device 2 to receive the right eye light emitting part 61 and the left eye light emitting part ( It is preferable that a light emitting driver for controlling 62 is further included. The standard interface can use all kinds of interfaces having communication and power functions.

In addition, a software program may be installed in the portable multimedia player 2 to provide the stereoscopic image. It can be installed via application download, or it can be installed in other ways (installation via after-sales service center, firmware upgrade, etc.).

The software program alternately provides a predetermined stereoscopic image source into a left eye image and a right eye image, and provides synchronization (and, if possible, brightness information and external illumination information) of the stereoscopic image providing accessories through the standard interface. 60 can be provided. If necessary, the three-dimensional image providing accessory 60 may be provided with a separate illumination sensor for measuring the external illumination, the sensor information may be used for the brightness control of the light emitting unit in the light emission driver.

In the case of the portable multimedia playback device as shown in Figs. 1 and 2, since the size of the display is relatively small compared to the eyeball separation distance (about 6.5 cm) of the viewer, it can be configured to direct each eye of the viewer without any complicated configuration. This is easy. In particular, when applied in combination with the recent augmented reality function, the effect that the user can feel is expected to be significant.

On the other hand, the above-described configuration can be applied to other kinds of multimedia playback devices such as general PCs, TVs, monitors, etc., and this application will be easy for those skilled in the art.

3 illustrates a configuration of a stereoscopic image providing system applied to a stereoscopic image reproducing apparatus or an image reproducing apparatus to which such a function is additionally applied, such as the portable multimedia reproducing apparatus described with reference to FIGS. 1 and 2.

As shown, the stereoscopic image reproducing apparatus 70 basically separates the left and right eye images from the stereoscopic image source, sequentially provides them to the display, and outputs a switching timing signal of the corresponding images. A display unit 73 for sequentially displaying an image provided by the image control unit 71 and a synchronization signal generation unit 72 for converting a switching timing signal of an image provided by the stereoscopic image control unit 71 into a synchronization signal. It is configured to include. In some cases, as indicated by the dotted line, the synchronization signal generator 72 provides the brightness information of the image or the illumination information obtained through the built-in illuminance sensor (not shown) so that the synchronization signal generator 72 synchronizes the synchronization signal. Along with the additional information, the additional information may be transmitted to the wide-field blocker 80 that controls the block of view. Here, the stereoscopic image controller 71 or the synchronization signal generator 72 may be configured in a physical configuration, but in some cases, the stereoscopic image controller 71 or the synchronization signal generator 72 may be configured by a software function that operates in the main controller.

The wide-field blocking unit 80 built in or external to the stereoscopic image reproducing apparatus 70 receives a synchronization signal (additionally including image brightness signal or illuminance information) provided by the synchronization signal generator 72. And a light emission driver 81 for driving the right eye light emitting unit 82 and the left eye light emitting unit 83 at the driving timing after analyzing the synchronization signal.

In the illustrated case, the synchronization signal generator 72 and the light emitting driver 81 are directly connected, but may be connected through a standard or dedicated interface as necessary. In some cases, various short-range communication methods (infrared, Bluetooth, Zigbee, ultra-wideband communication, short-range direct communication, RF, visible light communication, etc.) can be connected in a wireless manner. If it is connected in a wireless manner, a power source may be additionally configured in the optical field cutoff unit 80.

The light emission driver 81 operates the right eye light emitter 82 and the left eye light emitter 83 according to a timing at which each eyeball image is switched based on a synchronization signal. It is possible to reduce the extent to which the recognition of the image following by the afterimage is disturbed by stopping the operation of the light emitting unit at least a predetermined time without operating the light emitting unit for all of the provided time.

On the other hand, the light emitting driver 81 may control the brightness of the light emitting unit by using additionally provided brightness information and illuminance information of the image, and in accordance with the brightness control situation, the driving timing of the light emitting unit in consideration of the afterimage (brightness If the image is low, the afterimage may be shortened. If the illuminance sensor is not configured in the stereoscopic image reproducing apparatus 70, the illuminance sensor is configured in the wide-field cutoff unit 80, and the light emission driver 81 checks the output of the illuminance sensor and You can also adjust the brightness.

The right eye light emitting unit 82 and the left eye light emitting unit 83 may each include one or more light emitting devices, and a light path forming unit for transmitting light to a viewer's field of view, that is, a lens, a light guide, and a diffusion unit, as necessary. Etc. may be applied.

4 illustrates an example of a stereoscopic image providing system according to another exemplary embodiment of the present invention. FIGS. 4A and 4B illustrate a configuration that may be applied to a case where a display is large and a viewer's viewing distance is relatively long.

4A illustrates an optical field cutout unit including an image sensor unit 101 and a light source unit 102 in an external frame of the display 15 of the stereoscopic image reproducing apparatus 10, and configured to enable direct manipulation in an arbitrary direction. 100) and the wide-field blocking unit 100 directs the viewer's right eyeball 132 and left eyeball 131 so as to selectively block the view light selectively only for the desired eyeball even when the viewing distance is relatively long. It is provided to block the vision of one eye.

Although the illustrated wide field blocking unit 100 is illustrated as being configured externally, it may be embedded in the display 15 or the 3D image reproducing apparatus 10.

The illustrated wide-field blocking unit 100 includes an image sensor unit such as a camera sensor for detecting a viewer's motion, face, and eyeball through an image, an image processor for processing a corresponding image to detect a desired eyeball position, and a corresponding eyeball. And a directing control unit for directing the light emitting unit to a position. In this case, it is preferable that the light emitting unit is configured in plural in consideration of an operating speed to be configured to cover the right and left eyeballs, respectively. In addition, the angles of the plurality of light emitting parts may be adjusted in consideration of the directivity according to the distance. In addition, the image sensor unit and the image processing unit detects whether the view blocking light provided by the light emitting unit that operates not only the eyeball position of the viewer is provided in an area corresponding to the eyeball position of the viewer, and corrects the error thereof. Can be used.

FIG. 4B shows a wide-field blocking unit for the right eye 110 and the left eye 120, respectively, and the eyes of the viewer are detected by the image sensor units 111 and 121 and the light emitting units 112 and 122, respectively. One example is to provide light. Of course, the image sensor unit and the image processing unit may be configured as one, and only the light emitting unit directed by the directing control unit may be configured on the left and right sides.

4B may also be configured inside the display 15 of the 3D image reproducing apparatus 10.

Although not shown, various spatial information sensing methods recently used as game machines or input means may be used. For example, while the user is wearing a spatial position indexing means to which the user fluoresces or emits light is applied in the vicinity of the eyeball (for example, the ear), the user may do so through one or more image sensors configured in the stereoscopic image reproducing apparatus 10. You can also apply a method that identifies the location in space by identifying it.

5 is a block diagram of a stereoscopic image providing system according to another exemplary embodiment of the present invention described above, and is a configuration of a stereoscopic image providing system to which an eye tracking method is applied. Even in such a case, the configuration of the stereoscopic image providing apparatus 70 which substantially provides a stereoscopic image is the same as that shown in FIG. 3, and the optical signal using the synchronization signal (including brightness and illuminance information of the image) provided by the apparatus is provided. Only the configuration of the view block 130 may be changed, thereby minimizing the configuration of the existing stereoscopic image reproducing apparatus 70.

The illustrated wide-field blocking unit 130 includes an image sensor unit 134 for acquiring an image inside the light emission driver, and an image processor 133 for detecting an eyeball position of a viewer from an image provided by the image sensor unit 134. The orientation control unit 132 controls the orientation position by controlling the right eye light emitting unit 135 and the left eye light emitting unit 136, respectively, or in conjunction with each other, and the eyeball position information provided by the image processing unit 133. The control unit 132 controls the directivity of the right eye light emitter 135 and the left eye light emitter 136, and controls the directivity of the right eye light emitter 135 and the left eye feet 136 according to the received synchronization signal. The light emitting controller 131 may provide a driving signal (timing and brightness). In such a configuration, even if there is no illuminance sensor in the stereoscopic image reproducing apparatus 70, external brightness information may be obtained through the image sensor unit 134.

Other connection interface configurations or driving of the light emitting unit in consideration of the afterimage may be the same as or similar to the configuration of FIG. 3.

6 is a conceptual diagram illustrating a view blocking method according to another exemplary embodiment of the present invention, which is an additional method that may be additionally applied to all types of embodiments described above. That is, for blocking the view provided by applying polarization filters 152 and 162 in different directions on the light providing paths of the light emitting elements 151 and 161 respectively configured in the right eye emitting unit 150 and the left eye emitting unit 160. The light direction of the light source is filtered and provided, and the viewer is a viewer to which the polarization filters 141 and 142 of the direction corresponding to the polarization filters 152 and 162 applied to the right eye light emitting unit 150 and the left eye light emitting unit 160 are applied. By wearing the wearing filter unit 140 so that the light for blocking the view is provided only to the desired eye, the light for blocking the view may reduce the burden of directivity for distinguishing the eyes.

That is, as shown in the illustrated example, the viewer wears a polarizing film that can be detachably and additionally attached to the general polarized glasses or glasses, even though the light source for blocking the view is diffused and provided to both eyes, the light source for blocking the view is provided only to the target eye. It is possible to build a stereoscopic image providing environment insensitive to the movement of the viewer.

For example, in the case of the portable multimedia playback apparatus such as FIGS. 1 and 2, the distance between the viewer and the apparatus is relatively close, so that the stereoscopic image is worn when the polarized glasses are worn even though the light diffusion regions provided by the right eye emitter and the left eye emitter overlap. Viewability may be required so that no additional configuration for eye orientation may be required, and the viewable viewing angle may be greatly expanded, and even in the case of FIG. 4, the approximate orientation by motion tracking or face tracking instead of precise tracking such as eye detection. It is possible to watch a stereoscopic image by wearing polarized glasses without securing or directing such directivity.

The polarization direction of the polarizing film and the polarizing glasses illustrated in FIG. 6 is based on a case where the polarization angle of the front polarizer of the multimedia player is 45 degrees, and according to the presence or absence of the front polarizer of the multimedia player and the polarization direction of the front polarizer. The polarization direction of the light source and the polarizing glasses can be optimized.

FIG. 7 is a timing diagram illustrating an operation timing of a light emitting unit according to an exemplary embodiment of the present invention. As shown in FIG. The light emission state is shown.

That is, when the display image is a left eye image, the right eye light emitter emits light with a plurality of pulses during a period during which the corresponding left eye image is provided, and ends the light emission before the corresponding image providing period ends. Even after the light emission ends, the afterimage remains in the human visual field, and thus the left eye image is blocked in the right visual field by the afterimage for a predetermined time as indicated by the dotted line. Thereafter, when the display image is converted to the right eye image, the left eye light emitter operates to block the right eye image. In this case, when the left eye light emitter operates while the afterimage caused by the right eye light emitter is somewhat remaining, the change of the display image and the blocking of the view Even if the occurs minutely, the viewer hardly recognizes it. Of course, the driving method may be driven in a manner of continuously emitting light for a predetermined time instead of driving the pulse method.

As such, the emission timings of the left and right eye light emitting parts overlap each other in consideration of the afterimage, thereby preventing the reduction of the stereoscopic effect caused by the deviation between the switching time of the image provided from the display and the view blocking time. Of course, the timing may be adjusted slightly because the operation may be performed at an accurate timing or a blank period may be added during image switching.

In addition, when the amount of light emitted from the light emitting unit is controlled in consideration of the brightness of the image or the external illuminance, the length of the afterimage according to the brightness may be different, and thus timing may be considered. On the other hand, after-image selection means for providing a signal for setting the after-image period to the light-emitting driving unit of the three-dimensional glasses in consideration of the deviation of the human vision or the length of the afterimage may be configured to the visual field blocking unit or the stereoscopic image reproducing apparatus to be connected to the light-emitting driving unit. This can be a simple switch or volume can be used.

In the above described and illustrated with respect to preferred embodiments according to the present invention. However, the present invention is not limited to the above-described embodiments, and various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention. .

1: portable multimedia playback device 51, 52: light emitting unit
60: stereoscopic image providing accessories 61, 62: light emitting unit
80: wide-field cut-off unit 81: light emitting drive unit
82, 83: light emitting unit 130: wide-field blocking unit
131: light emission control unit 132: directing control unit
133: image processing unit 134: image sensor unit
135 and 136: light emitting units 151 and 161: light emitting elements
152, 162: polarizing film

Claims (16)

A stereoscopic image providing apparatus configured to a display that alternately provides left and right eye images for a stereoscopic effect,
A left eye light emitting unit and a right eye light emitting unit arranged to direct both eyes of the viewer to an exposed area of the display, and selectively emitting light to block a view of the directing viewer;
A light emission driver for receiving a synchronization signal from a stereoscopic image reproducing means for providing the left and right eye images to a display and generating an operation timing in consideration of an afterimage, and selectively operating the left eye light emitting part and the right eye light emitting part,
The light emission driving unit may further include an image sensor unit configured to acquire image information of a viewer, and an image processor configured to identify an image of the viewer's face and eyeball by processing an image provided by the image sensor unit; A directing control unit controlling the directing directions of the left eye light emitting unit and the right eye light emitting unit respectively or simultaneously; And a light emission control unit which controls the directing control unit according to the viewer's eyeball position information provided by the image processing unit so that the light emitting unit to emit light at the current operation timing is directed toward the target eye.
The stereoscopic image providing apparatus of claim 1, wherein each of the left eye light emitting part and the right eye light emitting part comprises at least one light emitting device or a light emitting device and a light path forming part.
The stereoscopic image providing apparatus of claim 1, wherein the light emission driving unit further receives a brightness signal of an image currently provided from the stereoscopic image reproducing unit to adjust brightness of the left eye light emitting unit and the right eye light emitting unit.
The method of claim 1, wherein the light emission driver further receives illuminance information on the current brightness environment from the stereoscopic image reproducing means or measures brightness of the current environment through a separately configured illuminance sensor to determine the brightness of the left eye light emitter and the right eye light emitter. Stereoscopic image providing device, characterized in that for adjusting.
delete The method of claim 1, wherein the light emitting drive unit further comprises a three-dimensional space sensing means for sensing the spatial position information of the viewer's face or eye on the basis of the three-dimensional position providing means worn by the user,
A directing control unit controlling the directing directions of the left eye light emitting unit and the right eye light emitting unit respectively or simultaneously;
And a light emission control unit for controlling the directing control unit according to the viewer's position information provided by the stereoscopic space sensing means to cause the light emitting unit to emit light at a current operation timing to be directed toward a target position.
The method of claim 1, wherein the left eye light emitting unit and the right eye light emitting unit are further applied to different polarizing films, the left eye light emitting unit and the right eye light emitting unit further comprises a viewer wearing filter unit is applied to the polarization filter corresponding to the polarizing film applied to the left eye light emitting unit Stereoscopic image providing device.
A stereoscopic image providing apparatus applied to an internal and external method to a display apparatus for providing an image,
A left eye light emitting unit and a right eye light emitting unit arranged to direct both eyes of the viewer to the exposed area of the display device, and selectively blocking light to block a viewer's field of view by directing light;
An image and synchronization providing unit installed in the display device to alternately provide a left eye image and a right eye image, and output a synchronization signal accordingly;
And a light emission driver for generating an operation timing in consideration of an afterimage according to the synchronization signal output through the image and the synchronization providing unit, and selectively operating the left eye light emitting unit and the right eye light emitting unit.
The stereoscopic image providing apparatus of claim 8, wherein the image and synchronization providing unit outputs a signal to be provided to the light emitting driver including the synchronization signal through a standard input / output port configured in the display device.
The display apparatus of claim 9, wherein the light emitting driver further includes an interface connected to a standard input / output port of the display, and the external light emitting unit is configured to be attached to or detached from the display device together with the left eye light emitting unit and the right eye light emitting unit. Stereoscopic image providing device.
The method of claim 8, wherein the image and the synchronization providing unit further outputs the brightness information of the provided image together with the synchronization signal, the light emission driver further receives the brightness information of the image to the brightness of the left eye light emitting unit and the right eye light emitting unit Stereoscopic image providing device characterized in that the control.
The stereoscopic image providing apparatus of claim 8, wherein the left eye light emitting part and the right eye light emitting part further apply polarizing films in different directions.
A stereoscopic image providing method for selectively blocking left and right eye images by receiving a synchronization signal from a display providing left and right eye images,
When the display provides a left eye image, a right eye view blocking step of blocking a right eye's field of vision by operating a view blocking light emitting unit disposed inside and outside the display within the left eye image providing period to direct the right eye according to the synchronization signal. Wow;
When the display provides a right eye image, a left eye view blocking step of blocking a left eye's field of vision by operating a light blocking unit disposed inside and outside the display within the right eye image providing period so as to direct the left eye according to the synchronization signal. 3D image providing method comprising a.
The method of claim 13, wherein the right eye visual cutoff step and the left eye visual cutoff step further include a brightness adjusting step of further receiving an image brightness signal from the display and controlling the brightness of the light emitting unit according to the image brightness signal. Stereoscopic image providing method.
The stereoscopic vision of claim 13, wherein the right-eye visual field blocking step and the left-eye visual field blocking step further include a directing control step of determining a viewer's position so that the directing direction of the light emitting unit becomes each eye of the viewer. How to provide video.
The stereoscopic vision of claim 13, wherein the blocking of the right eye and the blocking of the left eye further include filtering the direction of the light for blocking the view, which is provided through the polarization filter applied in different directions, respectively. How to provide video.

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