CN115273636A - Naked eye 3D immersive experience system - Google Patents
Naked eye 3D immersive experience system Download PDFInfo
- Publication number
- CN115273636A CN115273636A CN202110473216.XA CN202110473216A CN115273636A CN 115273636 A CN115273636 A CN 115273636A CN 202110473216 A CN202110473216 A CN 202110473216A CN 115273636 A CN115273636 A CN 115273636A
- Authority
- CN
- China
- Prior art keywords
- scene
- module
- naked eye
- user
- road
- 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
- 238000004088 simulation Methods 0.000 claims abstract description 26
- 230000002452 interceptive effect Effects 0.000 claims abstract description 20
- 238000011161 development Methods 0.000 claims abstract description 18
- 230000000007 visual effect Effects 0.000 claims abstract description 14
- 230000003238 somatosensory effect Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims description 8
- 238000011156 evaluation Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 4
- 230000001953 sensory effect Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 3
- 230000003137 locomotive effect Effects 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 2
- 230000007704 transition Effects 0.000 abstract description 9
- 230000003993 interaction Effects 0.000 abstract description 8
- 238000007654 immersion Methods 0.000 abstract description 2
- 230000018109 developmental process Effects 0.000 description 11
- 230000006870 function Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Processing Or Creating Images (AREA)
Abstract
The invention belongs to the field of stereoscopic display, and particularly relates to a naked eye 3D immersive experience system which comprises a naked eye 3D display module and a somatosensory interactive simulation driving module; the train development process is divided according to the times, and corresponding scenes are displayed by naked eye 3D technology, so that the appearances of different trains in different times are reflected, and users can experience the history and transition of train development in shocking visual enjoyment; meanwhile, a driving simulation module is arranged, so that a user can select different vehicle types, and on the basis, a road scene is selected, and deep immersion type virtual driving experience is realized; the invention vividly presents the development history of the middle train group and the transition of the Chinese railway vehicle to the public by fusing the naked eye 3D and somatosensory interaction technology, realizes the modeling of enterprise brands, realizes the popular science of the transition of the Chinese railway vehicle facing the public, and further embodies the contribution of the middle train group to the global rail transit equipment industry in the aspect of independent innovation.
Description
Technical Field
The invention relates to the field of naked eye 3D stereoscopic display, in particular to a naked eye 3D immersive experience system.
Background
Along with the rapid development of railways in China, the technology of railway carriages is continuously upgraded and updated, and the product platform is continuously improved. The Chinese middle train group insists on independent innovation, open innovation and cooperative innovation, builds a world leading rail transit equipment product technical platform and a manufacturing base, takes high-speed motor train units and urban rail vehicles as a representative series of products, can adapt to various complex geographic environments, and meets diversified market demands. The middle school bus group aims to achieve the aims of further promoting, recommending enterprise brand modeling and improving self soft strength of enterprises through enterprise propaganda, but the existing enterprise propaganda method has three modes of advertisement propaganda, public customs activities, culture popularization and the like. Although such publicity methods have the advantage of low cost, they have no features and attractiveness for the public, and lack immersive experience and sensory interaction, and cannot achieve the desired effect.
Disclosure of Invention
In view of this, the invention aims to provide a naked eye 3D immersive experience system, which vividly presents the development history of the middle train group and the transition of the Chinese railway vehicle to the public by fusing a naked eye 3D technology and a somatosensory interaction technology, realizes the modeling of enterprise brands, realizes the popular science of the transition of the Chinese railway vehicle facing the public, and further embodies the contribution of the middle train group to the global rail transit equipment industry in the aspect of independent innovation.
The invention provides a naked eye 3D immersive experience system, which is characterized in that: the device comprises a naked eye 3D display module and a somatosensory interactive simulation driving module; the naked eye 3D display module aims to construct a more real and three-dimensional visual scene for visitors through technical means for the transition development and the reform innovation of trains in the past, the present and the future, and enables users to feel visual impact brought by stereoscopic vision. According to the past origin history of trains, the current technical innovation and the expectation of future train development change, 3D train internal scenes and external scenes with different scenes are established, and the picture with the sense of three-dimensional space shows various world leading technical achievements of modern development of the Chinese railway train; the body feeling interactive simulation driving module: the experience that children were brought to the user and are driven the locomotive is felt to the interactive simulation driving simulation cabin of body, and the train operation of specific model freight train, subway and motor car not only can be familiar with to this module, and the simulation driver's platform is according to actual driving operating system and control program setting, and the user can experience and feel as if it takes real car to put into place.
Further, the naked eye 3D display module comprises a past display scene, a present display scene and a future display scene.
Further, the conversion between the past display scene, the present display scene and the future display scene is completed through a motion sensing interaction technology, the system senses the grabbing and selecting actions of the user through the Kinect motion sensing device, and when the user performs a specific action, the set time options respectively representing the past display scene, the present display scene and the future display scene are selected: in 1952, 2020 and 2100, and collision with the currently selected option is performed for 3-5s, that is, the recognition is successful, and a scene is triggered to respond, the state defines compatibility with left and right hands, and the specific system operation logic of the module is as shown in fig. 2.
Further, it selects module and road scene selection module still to feel interactive simulation driving module including vehicle style, it configures former car seat according to former car appearance and inner structure design to feel interactive simulation driving module for the user can know and be familiar with whole operation process and principle when experiencing real scene, feels the visual impact that brings in the train operation process, and the experience of being personally on the scene is very strong. The rapid development of the Chinese railway can be perceived while experiencing the operation. The voice explanation is also provided in the cockpit, and the somatosensory interactive simulation driving module can play a better role in railway science, education and propaganda.
Further, the road scene selection module comprises a mountain road scene and a country road scene specific to the truck, and the road scene selection module further comprises an urban road scene specific to the truck, the subway and the motor car, wherein the mountain road scene is provided with specific mode scenes such as a mountain road, a mountain dangerous road and the like; the urban road scene is provided with specific mode scenes such as signal lamps, road networks and sidewalks, and different visual sensory experiences are brought to users by selection of different road scenes; the urban road scene in the road scene selection module further comprises an urban selection function, and a user can select a motor car through the vehicle style selection module and then enter the urban road scene in the road scene selection module, and experience the impacts of Beijing-Tianjin inter-city railway, wuhan-Guangzhou and the like in the environment of 350 km/h of Wuguang high-speed railway by selecting Beijing-Tianjin or Wuhan-Guangzhou; when the user selects the subway through the vehicle style selection module, the user enters the urban road scene in the road scene selection module, and experiences the subway scenery of different cities by selecting Beijing or Shanghai.
Furthermore, the user experience feedback module comprises a system autonomous judgment module and a user subjective evaluation module, wherein the system autonomous judgment module judges the attractive force of each module by counting the average time of the user staying among the modules; the user subjective evaluation module extracts and analyzes keywords on the basis of collecting user subjective evaluation, and assists each module of the system to be improved and perfected subsequently on the basis.
The naked eye 3D immersive experience system disclosed by the invention has the following beneficial effects: the system vividly presents the development history of the middle-sized train group and the transition of the Chinese railway vehicle to the public by fusing a naked eye 3D technology and a body feeling interaction technology, and the display mode of combining the body feeling interaction and the naked eye 3D can obviously increase the interaction immersion feeling, realize the modeling of enterprise brands and the popular science of realizing the transition of the Chinese railway vehicle facing the public, and further embody the contribution of the middle-sized train group to the global rail transit equipment industry in the aspect of independent innovation.
Drawings
FIG. 1 is a flow chart of the present invention.
Fig. 2 is a naked eye 3D display module system operation logic diagram.
Detailed description of the preferred embodiments
The invention is further described below with reference to the accompanying drawings, in which the invention provides an embodiment according to fig. 1 and 2: a naked eye 3D immersive experience system comprises a naked eye 3D display module, a somatosensory interactive simulation driving module and a user experience feedback module, and aims to construct a more real and three-dimensional visual scene for visitors through naked eye 3D technical means in the past, the present and the future for the transition development and the innovation of trains, so that users can feel visual shock brought by stereoscopic vision. According to the past origin history of trains, the current technical innovation and the expectation of future train development change, 3D train internal scenes and external scenes in different ages are established, and the picture with the stereoscopic sense of space shows various world leading technical achievements of modern development of the Chinese railway train; the body feeling interactive simulation driving module: the experience that children were brought to the user and are driven the locomotive is felt to the interactive simulation driving simulation cabin of body, and the train operation of specific model freight train, subway and motor car not only can be familiar with to this module, and the simulation driver's platform is according to actual driving operating system and control program setting, and the user can experience and feel as if it takes real car to put into place.
The naked eye 3D presentation module includes "past" presentation scenes, "present" presentation scenes, and "future" presentation scenes. The system senses the grabbing and selecting actions of a user through Kinect somatosensory equipment, and selects the set time options respectively representing the past display scene, the present display scene and the future display scene when the user performs specific actions: 1952, 2020 and 2100, and collide with the currently selected option for 3-5s, i.e. indicating that the recognition is successful, triggering the scene to respond. The above represents scenes of "past"/1952, "present"/2020, "future"/2100, and the epoch-making feature-rich characters and decorations are exhibited by naked eye 3D technology to achieve scene arrangement and enable users to go deep therein. If the scene is 'past', the scene should be rich in the sense of age; the "now" scene should be rich in realism; the 'future' scene should be rich in technological sense.
As shown in fig. 1 and fig. 2, in an embodiment of the present invention, the motion sensing interactive simulation driving module further includes a vehicle style selection module and a road scene selection module, and the motion sensing interactive simulation driving module configures an original vehicle seat according to an original vehicle shape and an original internal structure design, so that a user can understand and be familiar with the whole operation process and principle while experiencing a real scene, and can feel visual impact brought in the train operation process, and experience a sense of being personally on the scene is very strong. The rapid development of the Chinese railway can be perceived while experiencing the operation. The voice explanation is also provided in the cockpit, and the somatosensory interactive simulation driving module can play a better role in railway science, education and propaganda. The specific somatosensory interaction is realized by the following steps: firstly, depth measurement is carried out, and people and background objects are measured through a depth camera; and then separating characters from objects through foreground segmentation, identifying human skeletons and human key skeleton nodes through a skeleton extraction technology, finally performing action identification, and triggering a scene to respond when a user makes a preset instruction action, namely the identification is successful. Such interactive behavior accomplishes the perception function mainly through gesture recognition.
With reference to fig. 1 and fig. 2, in an embodiment of the present invention, the road scene selection module includes a mountain road scene and a country road scene specific to trucks, and the road scene selection module further includes an urban road scene specific to trucks, subways, and railcars, wherein the mountain road scene is set with specific mode scenes such as mountain roads and mountain highways; the urban road scene is provided with specific mode scenes such as signal lamps, road networks and sidewalks, and different visual sensory experiences are brought to users by selection of different road scenes; the urban road scene in the road scene selection module further comprises an urban selection function, and a user can select a motor car through the vehicle style selection module and then enter the urban road scene in the road scene selection module, and experience the impacts of Beijing-Tianjin inter-city railway, wuhan-Guangzhou and the like in the environment of 350 km/h of Wuguang high-speed railway by selecting Beijing-Tianjin or Wuhan-Guangzhou; when the user selects the subway through the vehicle style selection module, the user enters the urban road scene in the road scene selection module, and experiences the subway scenery of different cities by selecting Beijing or Shanghai.
Referring to fig. 1, in an embodiment of the present invention, the user experience feedback module includes a system self-determination module and a user subjective evaluation module, and the system self-determination module determines the attractive force of each module by counting the average time of the user staying between the modules; the user subjective evaluation module extracts and analyzes keywords on the basis of collecting user subjective evaluation, and assists each module of the system to be improved and perfected subsequently on the basis.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A naked eye 3D immersive experience system comprising: the naked eye 3D display module and the somatosensory interactive simulation driving module are connected with each other; naked eye 3D show module: aiming at constructing a more real and three-dimensional visual scene for visitors through naked eye 3D technical means in the past, the present and the future on the change development and innovation of trains, so that users can feel visual impact brought by three-dimensional vision, according to the original history of the trains in the past, the present technical innovation and the expectation on the future train development change, 3D train internal scenes and external scenes in different years are established, and pictures with three-dimensional space senses show various world leading technical achievements in the modern development of the Chinese railway trains; the body feeling interactive simulation driving module: the experience that children were brought to the user and are driven the locomotive is felt to the interactive simulation driving simulation cabin of body, and the train operation of specific model freight train, subway and motor car not only can be familiar with to this module, and the simulation driver's platform is according to actual driving operating system and control program setting, and the user can experience and feel as if it takes real car to put into place.
2. The naked eye 3D immersive experience system of claim 1, wherein the naked eye 3D presentation modules comprise a "past" presentation scene, a "present" presentation scene, and a "future" presentation scene.
3. The naked eye 3D immersive experience system of claim 2, wherein: the system comprises a Kinect somatosensory device, a Kinect display device, a Kinect motion sensing device and a display device, wherein the Kinect motion sensing device senses the grabbing and selecting actions of a user, and the Kinect motion sensing device senses the grabbing and selecting actions of the user, namely selects the set time options respectively representing the past display scene, the present display scene and the future display scene: in 1952, 2020 and 2100, and collision with the currently selected option is performed for 3-5s, namely, the identification is successful, and the scene is triggered to respond, and the state defines compatibility with left and right hands.
4. The naked eye 3D immersive experience system of claim 1, wherein: the interactive simulation of body sense module of driving still includes vehicle style selection module and road scene selection module, the interactive simulation of body sense module of driving is according to former car appearance and inner structure design, disposes former car seat for the user can understand and be familiar with whole operation process and principle when experiencing real scene, the visual impact of feeling the train and moving in-process and bringing, it is very strong to be personally on the scene experience, also can perceive the rapid development of china railway when experiencing the operation, still be furnished with the pronunciation explanation inside the cockpit, the interactive simulation of body sense module of driving can play better railway science, education, the effect of publicity.
5. The naked eye 3D immersive experience system of claim 4, wherein: the road scene selection module comprises a mountain road scene and a country road scene specific to a truck, and also comprises an urban road scene specific to the truck, a subway and a motor car, wherein the mountain road scene is provided with specific mode scenes such as a mountain road, a mountain danger road and the like; the urban road scene is provided with specific mode scenes such as signal lamps, road networks and sidewalks, and different visual sensory experiences are brought to users by selection of different road scenes; the urban road scene in the road scene selection module further comprises an urban selection function, and a user can select a 'motor car' through the vehicle style selection module and then enter the urban road scene in the road scene selection module, and experience the impacts of visual sense, auditory sense and the like in environments of 350 kilometers per hour of Beijing-Tianjin urban railways and Wuhan-Guangzhou high-speed railways by selecting 'Beijing-Tianjin' or 'Wuhan-Guangzhou'; when a user selects the 'subway' through the vehicle style selection module, the user enters the urban road scene in the road scene selection module, and experiences subway landscapes of different cities by selecting 'Beijing' or 'Shanghai'.
6. The naked eye 3D immersive experience system of claim 1, wherein: the system self-judgment module judges the attractive force of each module by counting the average time of the user staying among the modules; the user subjective evaluation module extracts and analyzes keywords on the basis of collecting user subjective evaluation, and assists each module of the system to be improved and perfected subsequently on the basis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110473216.XA CN115273636A (en) | 2021-04-29 | 2021-04-29 | Naked eye 3D immersive experience system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110473216.XA CN115273636A (en) | 2021-04-29 | 2021-04-29 | Naked eye 3D immersive experience system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115273636A true CN115273636A (en) | 2022-11-01 |
Family
ID=83744817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110473216.XA Pending CN115273636A (en) | 2021-04-29 | 2021-04-29 | Naked eye 3D immersive experience system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115273636A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104765454A (en) * | 2015-04-02 | 2015-07-08 | 吉林大学 | Human muscle movement perception based menu selection method for human-computer interaction interface |
| CN108830647A (en) * | 2018-06-01 | 2018-11-16 | 广州华工中云信息技术有限公司 | Intelligent exhibition room data statistic analysis platform |
| CN108877378A (en) * | 2018-08-06 | 2018-11-23 | 杭州行开科技有限公司 | A kind of the naked eye 3D interaction training system and method for drive simulating |
| CN109426783A (en) * | 2017-08-29 | 2019-03-05 | 深圳市掌网科技股份有限公司 | Gesture identification method and system based on augmented reality |
| CN109493672A (en) * | 2018-12-13 | 2019-03-19 | 国网浙江省电力有限公司绍兴供电公司 | The simulation training system and emulation training method of vacuum circuit breaker operating |
| CN109976530A (en) * | 2019-04-08 | 2019-07-05 | 贵州大学 | A kind of VR system cognizant load quantitative estimation method |
| CN110045821A (en) * | 2019-03-12 | 2019-07-23 | 杭州电子科技大学 | A kind of augmented reality exchange method of Virtual studio hall |
| CN111932680A (en) * | 2020-06-16 | 2020-11-13 | 厦门大学 | Urban geomorphic element identification method and system based on VR (virtual reality) depth visual perception |
| CN112446337A (en) * | 2020-12-02 | 2021-03-05 | 电子科技大学 | Wisdom museum management system based on expression discernment |
| CN113723155A (en) * | 2020-10-14 | 2021-11-30 | 天翼智慧家庭科技有限公司 | Method and system for measuring user visual experience |
-
2021
- 2021-04-29 CN CN202110473216.XA patent/CN115273636A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104765454A (en) * | 2015-04-02 | 2015-07-08 | 吉林大学 | Human muscle movement perception based menu selection method for human-computer interaction interface |
| CN109426783A (en) * | 2017-08-29 | 2019-03-05 | 深圳市掌网科技股份有限公司 | Gesture identification method and system based on augmented reality |
| CN108830647A (en) * | 2018-06-01 | 2018-11-16 | 广州华工中云信息技术有限公司 | Intelligent exhibition room data statistic analysis platform |
| CN108877378A (en) * | 2018-08-06 | 2018-11-23 | 杭州行开科技有限公司 | A kind of the naked eye 3D interaction training system and method for drive simulating |
| CN109493672A (en) * | 2018-12-13 | 2019-03-19 | 国网浙江省电力有限公司绍兴供电公司 | The simulation training system and emulation training method of vacuum circuit breaker operating |
| CN110045821A (en) * | 2019-03-12 | 2019-07-23 | 杭州电子科技大学 | A kind of augmented reality exchange method of Virtual studio hall |
| CN109976530A (en) * | 2019-04-08 | 2019-07-05 | 贵州大学 | A kind of VR system cognizant load quantitative estimation method |
| CN111932680A (en) * | 2020-06-16 | 2020-11-13 | 厦门大学 | Urban geomorphic element identification method and system based on VR (virtual reality) depth visual perception |
| CN113723155A (en) * | 2020-10-14 | 2021-11-30 | 天翼智慧家庭科技有限公司 | Method and system for measuring user visual experience |
| CN112446337A (en) * | 2020-12-02 | 2021-03-05 | 电子科技大学 | Wisdom museum management system based on expression discernment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203366572U (en) | Vehicle driving simulator | |
| CN104851330B (en) | A kind of parking simulated training method and system | |
| CN105788401B (en) | Defensive drive simulation based on real vehicle body experiences training system | |
| CN110427682A (en) | A kind of traffic scene simulation experiment platform and method based on virtual reality | |
| CN109658768B (en) | Virtual reality's many people are with scene mixed traffic flow simulation experiment platform | |
| CN108091203A (en) | It is a kind of based on virtual reality technology stress traffic scene driving training system | |
| CN112185210B (en) | Train driving simulation system and driving simulation method | |
| CN105654808A (en) | Intelligent training system for vehicle driver based on actual vehicle | |
| CN109658519B (en) | Vehicle-mounted multi-mode augmented reality system based on real road condition information image processing | |
| CN108922307A (en) | Drive simulating training method, device and driving simulation system | |
| CN104517493A (en) | High-speed rail driving simulation system | |
| CN110930811B (en) | System suitable for unmanned decision learning and training | |
| CN205460941U (en) | Developments virtual reality drives recreation system | |
| CN115410424A (en) | Intelligent learning system for motor vehicle driving training and using method | |
| JP2003150038A (en) | Apparatus and method for driving simulation | |
| CN115273636A (en) | Naked eye 3D immersive experience system | |
| CN109686165A (en) | A kind of the train lightweight simulation system and its construction method of multiple motion platforms | |
| CN113079366A (en) | 4D riding scene simulation system | |
| CN109003335A (en) | A kind of virtual driving sensory perceptual system and its scene generating method based on VR technology | |
| JP2001022264A (en) | Simulation device | |
| CN204066499U (en) | A kind of children's battery truck place system of drive simulating outdoor scene | |
| CN212933831U (en) | Rail transit analog simulation teaching equipment | |
| CN107256467A (en) | A kind of civilized index evaluation system of the citizen based on VR scenes | |
| CN207924671U (en) | Based on manipulate dynamics High Precision Simulation simulator and with its simulation model | |
| Orfila et al. | Ecodriving performances of human drivers in a virtual and realistic world |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20221101 |