CN102547349A - 3D (3-dimensional) image processing device and method for shutter type liquid crystal 3D display device - Google Patents
3D (3-dimensional) image processing device and method for shutter type liquid crystal 3D display device Download PDFInfo
- Publication number
- CN102547349A CN102547349A CN2012100228837A CN201210022883A CN102547349A CN 102547349 A CN102547349 A CN 102547349A CN 2012100228837 A CN2012100228837 A CN 2012100228837A CN 201210022883 A CN201210022883 A CN 201210022883A CN 102547349 A CN102547349 A CN 102547349A
- Authority
- CN
- China
- Prior art keywords
- frame
- picture
- eye
- image
- image processing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 31
- 238000012545 processing Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000003709 image segmentation Methods 0.000 claims abstract description 9
- 238000003672 processing method Methods 0.000 claims abstract description 9
- 230000000007 visual effect Effects 0.000 abstract description 8
- 238000007667 floating Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 8
- 239000011521 glass Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Landscapes
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention provides a 3D (3-dimensional) image processing device and method for a shutter type liquid crystal 3D display device. The 3D image processing device comprises an image segmentation component, a frame storage and an image processing component, wherein the image segmentation component is used for segmenting an original 3D image into a first picture and a second picture, the first picture comprises a plurality of frame pictures received by left eyes, the second picture comprises a plurality of frame pictures received by right eyes, and the image processing component is used for adjusting the output sequences of the left-eye frame pictures and the right-eye frame pictures from the frame storage so as to reconstruct the 3D image. With the adoption of the 3D image processing device and the 3D image processing method for the shutter type liquid crystal 3D display device, the output sequences of the left-eye frame pictures and the right-eye frame pictures in the same frame are adjusted by using the image processing component, so that the shutter type liquid crystal 3D display device can respectively output left-eye/right-eye frame pictures and the right-eye/left-eye frame pictures in randomly two adjacent frames, expected 3D depth can be perceived when dynamic 3D images are watched by human eyes, the floating or sinking of the 3D images on a display screen is avoided, and the visual experience of users is remarkably improved.
Description
Technical Field
The present invention relates to a shutter type liquid crystal stereoscopic display, and more particularly, to a 3D image processing apparatus and method thereof for the shutter type liquid crystal stereoscopic display.
Background
With the continuous progress of technology, the performance requirements of the display devices are higher and higher. Generally, a display which is thin and light, has good picture quality and low energy consumption, and can bring a good new visual experience to a user, so that the development of a 3D display is recently favored by technicians. Specifically, the 3D display mainly sends left and right eye images to human eyes spatially or temporally, respectively, so that the left and right eyes are subjected to parallax, thereby realizing a stereoscopic effect.
Shutter 3D glasses are a related technology in the time-series method. The method mainly divides an original 3D image picture into an odd picture and an even picture, and then controls a liquid crystal switch of 3D glasses through an infrared emitter on a system board, thereby achieving the purpose of synchronizing with the pictures. When people watch 3D images, in fact, the shutter type 3D glasses alternately start the liquid crystal in the lenses at different time, the left eye/the right eye can only watch odd pictures and even pictures respectively by shielding the vision of the left eye/the right eye, and after the odd pictures and the even pictures are respectively transmitted to the brain, images with depth feeling can be formed, namely, the left eye images and the right eye images are simultaneously watched at the same position, so that 3D imaging is realized. The stereoscopic display has the advantages that the stereoscopic display does not need to adjust and reduce the resolution of the picture and can be realized on products quickly. However, the shutter 3D glasses output frame pictures corresponding to the left and right eyes in a frame-by-frame (frame by frame) time division manner, and when a dynamic 3D image is viewed, the 3D depth perceived by human eyes is different from the 3D depth of a static 3D image due to an eye tracking effect, which causes distortion in the 3D depth. At this time, for human eyes, the 3D image is perceived to float out of the display screen or the 3D image is perceived to sink into the display screen, which greatly reduces the visual experience.
In view of this, it is an urgent task for those skilled in the art to design a novel shutter-type stereoscopic liquid crystal display, so that when a human eye views a dynamic 3D image, the human eye can perceive a desired 3D depth, thereby preventing the 3D image from floating or sinking into a display screen and improving the visual experience of a user.
Disclosure of Invention
Aiming at the defects existing in the shutter type liquid crystal stereoscopic display in the prior art when in use, the invention provides a 3D image processing device of the shutter type liquid crystal stereoscopic display and a method thereof.
According to an aspect of the present invention, there is provided a 3D image processing apparatus for a shutter type liquid crystal stereoscopic display, including:
the image segmentation component is used for segmenting an original 3D image into a first picture and a second picture, wherein the first picture comprises a plurality of frame pictures received by a left eye, and the second picture comprises a plurality of frame pictures received by a right eye;
the frame memory is used for receiving the first picture and the second picture and sequentially distributing the first picture and the second picture according to a frame sequence; and
an image processing component for adjusting an output order of the plurality of left-eye frame pictures and the plurality of right-eye frame pictures from the frame memory and outputting the first picture and the second picture according to the output order so as to reconstruct the 3D image,
in any adjacent Nth frame and (N +1) th frame, a first left-eye frame picture and a first right-eye frame picture are sequentially output in one frame, a second right-eye frame picture and a second left-eye frame picture are sequentially output in the other frame, and N is a natural number.
Preferably, the image segmentation component communicates with the frame memory in a wired or wireless manner. More preferably, the wireless mode includes an infrared mode or a bluetooth mode.
Preferably, the shutter type liquid crystal stereoscopic display has a 3D depth observed by human eyes of zero when displaying a dynamic 3D image.
In an embodiment, the nth left-eye frame picture and the nth right-eye frame picture are sequentially output in the nth frame, and the (N +1) th right-eye frame picture and the (N +1) th left-eye frame picture are sequentially output in the (N +1) th frame.
In another embodiment, the nth right-eye frame picture and the nth left-eye frame picture are sequentially output in the nth frame, and the (N +1) th left-eye frame picture and the (N +1) th right-eye frame picture are sequentially output in the (N +1) th frame.
According to another aspect of the present invention, there is provided a 3D image processing method for a shutter type liquid crystal stereoscopic display, including the steps of:
dividing the original 3D image into a first image and a second image, wherein the first image comprises a plurality of frame images received by a left eye, and the second image comprises a plurality of frame images received by a right eye;
receiving the first picture and the second picture, and sequentially distributing the first picture and the second picture according to a frame sequence;
adjusting an output order of a plurality of left-eye frame pictures and a plurality of right-eye frame pictures from the frame memory, and outputting the first picture and the second picture according to the output order so as to reconstruct the 3D image; and
in any adjacent Nth frame and (N +1) th frame, a first left-eye frame picture and a first right-eye frame picture are sequentially output in one frame, a second right-eye frame picture and a second left-eye frame picture are sequentially output in the other frame, and N is a natural number.
Preferably, the shutter type liquid crystal stereoscopic display has a 3D depth observed by human eyes of zero when displaying a dynamic 3D image.
Preferably, the nth left-eye frame picture and the nth right-eye frame picture are sequentially output in the nth frame, and the (N +1) th right-eye frame picture and the (N +1) th left-eye frame picture are sequentially output in the (N +1) th frame.
Preferably, the nth right-eye frame picture and the nth left-eye frame picture are sequentially output in the nth frame, and the (N +1) th left-eye frame picture and the (N +1) th right-eye frame picture are sequentially output in the (N +1) th frame.
By adopting the 3D image processing device and the method thereof for the shutter type liquid crystal stereoscopic display, an original 3D image is divided into a first image and a second image, and the output sequence of a plurality of left-eye frame images and a plurality of right-eye frame images from the frame memory is adjusted by the image processing component, so that the left-eye frame images/the right-eye frame images/the left-eye frame images are respectively output in any two adjacent frames, therefore, human eyes can perceive the expected 3D depth when watching the dynamic 3D image, and the visual experience of a user can be remarkably improved while avoiding the 3D image from floating out of or sinking into a display screen.
Drawings
The various aspects of the present invention will become more apparent to the reader after reading the detailed description of the invention with reference to the attached drawings. Wherein,
FIG. 1 is a schematic diagram illustrating an actual 3D image perceived by human eyes when a shutter type LCD stereoscopic display in the prior art displays a dynamic 3D image;
fig. 2 is a schematic diagram illustrating an actual 3D image perceived by human eyes when another shutter type lcd stereoscopic display in the prior art displays a dynamic 3D image;
FIG. 3 illustrates a block diagram of a 3D image processing apparatus for a shuttered liquid crystal stereoscopic display, in accordance with an aspect of the present invention;
fig. 4 is a schematic diagram illustrating an actual 3D video perceived by human eyes when a dynamic 3D video is displayed using the 3D image processing apparatus of fig. 3; and
fig. 5 illustrates a flow chart of a 3D image processing method for a shuttered liquid crystal stereoscopic display in accordance with another aspect of the present invention.
Detailed Description
In order to make the present disclosure more complete and complete, reference is made to the accompanying drawings, in which like references indicate similar or analogous elements, and to the various embodiments of the invention described below. However, it will be understood by those of ordinary skill in the art that the examples provided below are not intended to limit the scope of the present invention. In addition, the drawings are only for illustrative purposes and are not drawn to scale.
Specific embodiments of various aspects of the present invention are described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram illustrating an actual 3D image perceived by human eyes when a shutter-type lcd stereoscopic display in the prior art displays a dynamic 3D image. Fig. 2 is a schematic diagram illustrating an actual 3D image perceived by human eyes when another shutter-type liquid crystal stereoscopic display in the prior art displays a dynamic 3D image.
It is easily understood that when a still 3D image is displayed through the shutter type liquid crystal stereoscopic display, there is no parallax in the images input to the left and right eyes. However, when a dynamic 3D video is displayed on a shutter type liquid crystal stereoscopic display, there is a possibility that parallax may exist between the video input to the left and right eyes. Referring to fig. 1, when the 3D image (i.e., the square in the figure) moves from left to right, for example, at a speed of 8ppf (pixels per field), the image observed by the left eye of the person is located to the right of the image observed by the right eye, and then on the display screen, the image observed by the left eye is the right eye image and the image observed by the right eye is the left eye image. In this way, the actual 3D image perceived by human eyes will be located in front of the display screen, and the visual experience will appear as the 3D image floating out of the display screen, as shown by the dotted line in the figure.
Similarly, referring to fig. 2, when the 3D image (i.e., the square in the figure) moves from right to left, for example, at a speed of 8ppf (pixels per field), the image observed by the left eye of the person is positioned to the left of the image observed by the right eye, then on the display screen, the left eye image is positioned to the left and the right eye image is positioned to the right, and the left eye image and the right eye image differ by 4 pixels at the leftmost end and the rightmost end, respectively. In this way, the actual 3D image perceived by human eyes will be located behind the display screen, and the visual experience will be shown as the 3D image sinks into the display screen, as shown by the dotted line in the figure. Thus, with the shuttered liquid crystal stereoscopic display of fig. 1 or 2, the actual 3D image input to the human eye will float out of or sink into the display screen, resulting in a perceived 3D depth that is not originally intended by the viewer.
In order to solve the defects of fig. 1 or fig. 2, fig. 3 is a block diagram of a 3D image processing apparatus for a shutter type liquid crystal stereoscopic display according to an aspect of the present invention. Referring to fig. 3, the 3D image processing apparatus includes an image segmentation component 301, a frame memory 303, and an image processing component 305. The image segmentation component 301 is configured to segment an original 3D image into a first frame including a plurality of frame frames received by a left eye and a second frame including a plurality of frame frames received by a right eye. The frame memory 303 is configured to receive the first picture and the second picture, and sequentially allocate the first picture and the second picture according to a frame sequence. The image processing component 305 is configured to adjust an output order of the plurality of left-eye frame pictures and the plurality of right-eye frame pictures from the frame memory 303, and output the first picture and the second picture according to the adjusted output order, so as to reconstruct the 3D image.
It should be noted that, in any adjacent nth frame and (N +1) th frame, a first left-eye frame and a first right-eye frame are sequentially output in one frame, a second right-eye frame and a second left-eye frame are sequentially output in another frame, and N is a natural number. For example, the nth left-eye frame picture and the nth right-eye frame picture are sequentially output in the nth frame, and the (N +1) th right-eye frame picture and the (N +1) th left-eye frame picture are sequentially output in the (N +1) th frame. As another example, the nth right-eye frame picture and the nth left-eye frame picture are sequentially output in the nth frame, and the (N +1) th left-eye frame picture and the (N +1) th right-eye frame picture are sequentially output in the (N +1) th frame.
In one embodiment, the image segmentation component 301 communicates with the frame store 303 in a wired or wireless manner. For example, the wireless system is an infrared system or a bluetooth system.
In another embodiment, the shutter type liquid crystal stereoscopic display has zero 3D depth observed by human eyes when displaying dynamic 3D images. That is, when displaying a dynamic 3D image, the actual 3D image perceived by the human eye is exactly on the display screen.
Fig. 4 is a schematic diagram illustrating an actual 3D video image perceived by human eyes when a dynamic 3D video image is displayed using the 3D image processing apparatus of fig. 3. Referring to fig. 4, L1R1 is a 1 st frame corresponding to left and right eye frame pictures, L2R2 is a 2 nd frame corresponding to left and right eye frame pictures, and L3R3 is a 3 rd frame corresponding to left and right eye frame pictures. In any two adjacent frames, the frame images are output in an order of interleaving left-eye frame images and right-eye frame images, such as L1-R1-R2-L2, and R2-L2-L3-R3, at this time, there is no parallax between the image observed by the left eye and the image observed by the right eye, so that the actual 3D image perceived by human eyes does not float out of the screen or sink into the screen, and conforms to the originally expected 3D depth.
Fig. 5 illustrates a flow chart of a 3D image processing method for a shuttered liquid crystal stereoscopic display in accordance with another aspect of the present invention. Referring to fig. 5, in the 3D image processing method, step S51 is first executed to split the original 3D image into a first frame and a second frame, wherein the first frame includes a plurality of frames received by a left eye, and the second frame includes a plurality of frames received by a right eye. Then, step S53 is executed to receive the first picture and the second picture, and to sequentially distribute the first picture and the second picture according to a frame sequence. Step S55 is then performed to adjust an output order of the plurality of left-eye frame pictures and the plurality of right-eye frame pictures from the frame memory, and output the first picture and the second picture according to the output order, so as to reconstruct the 3D image. Finally, step S57 is executed to sequentially output a first left-eye frame and a first right-eye frame in one frame and a second right-eye frame and a second left-eye frame in another frame in any adjacent nth frame and (N +1) th frame.
By adopting the 3D image processing device and the method thereof for the shutter type liquid crystal stereoscopic display, an original 3D image is divided into a first image and a second image, and the output sequence of a plurality of left-eye frame images and a plurality of right-eye frame images from the frame memory is adjusted by the image processing component, so that the left-eye frame images/the right-eye frame images/the left-eye frame images are respectively output in any two adjacent frames, therefore, human eyes can perceive the expected 3D depth when watching the dynamic 3D image, and the visual experience of a user can be remarkably improved while avoiding the 3D image from floating out of or sinking into a display screen.
Hereinbefore, specific embodiments of the present invention are described with reference to the drawings. However, those skilled in the art will appreciate that various modifications and substitutions can be made to the specific embodiments of the present invention without departing from the spirit and scope of the invention. Such modifications and substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (10)
1. A 3D image processing apparatus for a shutter type liquid crystal stereoscopic display, the 3D image processing apparatus comprising:
the image segmentation component is used for segmenting an original 3D image into a first picture and a second picture, wherein the first picture comprises a plurality of frame pictures received by a left eye, and the second picture comprises a plurality of frame pictures received by a right eye;
the frame memory is used for receiving the first picture and the second picture and sequentially distributing the first picture and the second picture according to a frame sequence; and
an image processing component for adjusting an output order of the plurality of left-eye frame pictures and the plurality of right-eye frame pictures from the frame memory and outputting the first picture and the second picture according to the output order so as to reconstruct the 3D image,
in any adjacent Nth frame and (N +1) th frame, a first left-eye frame picture and a first right-eye frame picture are sequentially output in one frame, a second right-eye frame picture and a second left-eye frame picture are sequentially output in the other frame, and N is a natural number.
2. The 3D image processing apparatus according to claim 1, wherein the image segmentation component communicates with the frame memory in a wired manner or a wireless manner.
3. The 3D image processing apparatus according to claim 2, wherein the wireless system includes an infrared system or a bluetooth system.
4. The 3D image processing apparatus according to claim 1, wherein the shutter type liquid crystal stereoscopic display has a 3D depth observed by human eyes of zero when displaying a dynamic 3D image.
5. The 3D image processing apparatus according to claim 1, wherein an nth left-eye frame picture and an nth right-eye frame picture are sequentially output in an nth frame, and an (N +1) th right-eye frame picture and an (N +1) th left-eye frame picture are sequentially output in an (N +1) th frame.
6. The 3D image processing apparatus according to claim 1, wherein an nth right-eye frame picture and an nth left-eye frame picture are sequentially output in an nth frame, and an (N +1) th left-eye frame picture and an (N +1) th right-eye frame picture are sequentially output in an (N +1) th frame.
7. A 3D image processing method for a shutter type liquid crystal stereoscopic display, the method comprising the steps of:
dividing the original 3D image into a first image and a second image, wherein the first image comprises a plurality of frame images received by a left eye, and the second image comprises a plurality of frame images received by a right eye;
receiving the first picture and the second picture, and sequentially distributing the first picture and the second picture according to a frame sequence;
adjusting an output order of a plurality of left-eye frame pictures and a plurality of right-eye frame pictures from the frame memory, and outputting the first picture and the second picture according to the output order so as to reconstruct the 3D image; and
in any adjacent Nth frame and (N +1) th frame, a first left-eye frame picture and a first right-eye frame picture are sequentially output in one frame, a second right-eye frame picture and a second left-eye frame picture are sequentially output in the other frame, and N is a natural number.
8. The 3D image processing method according to claim 7, wherein the shutter type liquid crystal stereoscopic display has zero 3D depth observed by human eyes when displaying dynamic 3D images.
9. The 3D image processing method according to claim 7, wherein an nth left-eye frame picture and an nth right-eye frame picture are sequentially output in an nth frame, and an (N +1) th right-eye frame picture and an (N +1) th left-eye frame picture are sequentially output in an (N +1) th frame.
10. The 3D image processing method according to claim 7, wherein an nth right-eye frame picture and an nth left-eye frame picture are sequentially output in an nth frame, and an (N +1) th left-eye frame picture and an (N +1) th right-eye frame picture are sequentially output in an (N +1) th frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100228837A CN102547349A (en) | 2012-01-19 | 2012-01-19 | 3D (3-dimensional) image processing device and method for shutter type liquid crystal 3D display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100228837A CN102547349A (en) | 2012-01-19 | 2012-01-19 | 3D (3-dimensional) image processing device and method for shutter type liquid crystal 3D display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102547349A true CN102547349A (en) | 2012-07-04 |
Family
ID=46353115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100228837A Pending CN102547349A (en) | 2012-01-19 | 2012-01-19 | 3D (3-dimensional) image processing device and method for shutter type liquid crystal 3D display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102547349A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105227946A (en) * | 2014-07-04 | 2016-01-06 | 上海广播电视台 | 3D video creating device and decomposer |
| CN110741634A (en) * | 2017-12-11 | 2020-01-31 | 深圳市柔宇科技有限公司 | Image processing method, head-mounted display device and head-mounted display system |
-
2012
- 2012-01-19 CN CN2012100228837A patent/CN102547349A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105227946A (en) * | 2014-07-04 | 2016-01-06 | 上海广播电视台 | 3D video creating device and decomposer |
| CN105227946B (en) * | 2014-07-04 | 2018-10-26 | 上海广播电视台 | 3D video decomposers |
| CN110741634A (en) * | 2017-12-11 | 2020-01-31 | 深圳市柔宇科技有限公司 | Image processing method, head-mounted display device and head-mounted display system |
| CN110741634B (en) * | 2017-12-11 | 2021-06-25 | 深圳市柔宇科技股份有限公司 | Image processing method, head-mounted display device and head-mounted display system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104539935B (en) | The adjusting method and adjusting means of brightness of image, display device | |
| US8773519B2 (en) | Image display apparatus, glasses for image observation, image display control method, and program | |
| US20110254829A1 (en) | Wearable electronic device, viewing system and display device as well as method for operating a wearable electronic device and method for operating a viewing system | |
| CN103984108B (en) | Nakedness-yet stereoscopic display method and device based on vibrating grating | |
| CN102196285A (en) | Method for adjusting 3D image quality and 3D display apparatus | |
| TW201405483A (en) | Image data processing method and stereoscopic image display using the same | |
| US20110181593A1 (en) | Image processing apparatus, 3d display apparatus, and image processing method | |
| EP2387245A2 (en) | Three dimensional (3D) image display apparatus, and driving method thereof | |
| EP2541948A1 (en) | Stereoscopic image display method and display timing controller | |
| US20120120190A1 (en) | Display device for use in a frame sequential 3d display system and related 3d display system | |
| US20120120191A1 (en) | Image processor for use in a frame sequential 3d display system and related 3d display system | |
| US8547418B2 (en) | Method and system for processing and displaying video in three dimensions using a liquid crystal display | |
| US9888223B2 (en) | Display processing system, display processing method, and electronic device | |
| CN102547349A (en) | 3D (3-dimensional) image processing device and method for shutter type liquid crystal 3D display device | |
| CN103686141B (en) | 3D display packing and 3D display device | |
| US20130063420A1 (en) | Stereoscopic Image Display Method, Stereoscopic Image Driving Method, and Stereoscopic Image Display System | |
| CN202332125U (en) | Active 3D (Three-Dimensional) LED (Light Emitting Diode) display screen | |
| EP2469867A2 (en) | Image processing apparatus and image processing method | |
| US9270980B2 (en) | Autostereoscopic display system and method | |
| TWI499279B (en) | Image processing apparatus and method thereof | |
| CN102256152B (en) | Equipment and method for processing three-dimensional image | |
| JP2011176822A (en) | Image processing apparatus, 3d display apparatus, and image processing method | |
| CN102841447A (en) | Full distinguishability naked eye stereoscopic displayer | |
| KR101567710B1 (en) | Display system where the information can be seen only by the viewer wearing the special eyeglasses | |
| CN104919443B (en) | The method and apparatus for watching image |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120704 |