CN206533464U - Projection video conference apparatus and system - Google Patents
Projection video conference apparatus and system Download PDFInfo
- Publication number
- CN206533464U CN206533464U CN201621269481.7U CN201621269481U CN206533464U CN 206533464 U CN206533464 U CN 206533464U CN 201621269481 U CN201621269481 U CN 201621269481U CN 206533464 U CN206533464 U CN 206533464U
- Authority
- CN
- China
- Prior art keywords
- video
- projection
- processing unit
- data
- smart projector
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 11
- 230000003993 interaction Effects 0.000 claims description 7
- 241001269238 Data Species 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 4
- 230000003321 amplification Effects 0.000 abstract description 3
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The utility model discloses a kind of projection video conference apparatus and system, including smart projector, projection screen, audio output device, cam device and voice input device, smart projector is used to communicate to connect with outside video terminal, receive the first voice data and the first video data that long-range participant is sent by video terminal, and voice signal will be exported after the first voice data progress audio frequency process, the first video data is subjected to output video image after Video processing；Video image of the projection screen to receive and show smart projector output；Audio output device after receiving voice signal and amplification to export；Cam device is used to the second video data of collection site participant；Voice input device is used to the second audio data of collection site participant；Smart projector is additionally operable to send the second video data and second audio data to video terminal.The utility model can realize multipart video-meeting, and its is simple in construction, and cost is low, simple and easy to use.
Description
Technical field
The utility model is related to video-unit, more particularly to a kind of projection video conference apparatus and system.
Background technology
Video conference, refers to the people positioned at two or more places, by communication equipment and network, is handed over face-to-face
The meeting of what is said or talked about.Individual in daily life, does not require talk content security, meeting quality, parliamentary dimension, can use
The video software as Tencent QQ carries out Video chat.And government bodies, the business video meeting of enterprise and institution,
The conditions such as network, reliable meeting quality, the formal conferencing environment of stable safety are sought, then need to use the video council of specialty
Equipment is discussed, special video conferencing system is set up.Using video conferencing system, participant can hear other meeting-place sound,
See image, action and the expression of the live participant in other meeting-place, electronic presentations content can also be sent, make participant have body to face
The sensation in its border.
Video conferencing system in correlation technique is general by video conference terminal, videoconference server, NMS
The composition such as system and transmission network, its system architecture is complicated, and cost is high, and is difficult to carry out multi-party video meeting whenever and wherever possible
View.
Utility model content
The utility model is intended at least solve one of technical problem in correlation technique to a certain extent.Therefore, this reality
It is to propose a kind of projection video conference apparatus with new purpose.
Another purpose of the present utility model is to propose a kind of projection video with above-mentioned projection video conference apparatus
Conference system.
To achieve these goals, the projection video conference apparatus that the utility model embodiment is provided, including：
Smart projector, to be communicated to connect with outside video terminal, receives long-range participant whole by the video
The first voice data and the first video data sent is held, and voice will be exported after first voice data progress audio frequency process
Signal, output video image after Video processing is carried out by the first video data；
Projection screen, the projection screen is located in the smart projector light path, to receive and show the intelligence projection
The video image of instrument output；
Audio output device, the audio output device is connected with the smart projector, to receive the voice letter
Number, and will be exported after voice signal amplification；
Cam device, the cam device is connected with the smart projector, and to collection site participant
Two video datas；
Voice input device, the voice input device is connected with the smart projector, to collection site participant
Second audio data；
The smart projector is additionally operable to second video data and second audio data sending whole to the video
End.
The projection video conference apparatus provided according to the utility model embodiment, is filled using cam device, audio input
Put, audio output device and smart projector may be combined to form video conference device, smart projector receives long-range participant
The first voice data and the first video data sent by the video terminal, and first voice data is subjected to audio
Voice signal is exported after processing, the first video data is subjected to output video image after Video processing, projection screen is received and shown
The video image of the smart projector output, audio output device receives the voice signal, and the voice signal is put
Exported after big；So, it is possible to achieve multipart video-meeting, its is simple in construction, without special video conference terminal and display screen
Deng cost is low.Meanwhile, participant can carry out video conference whenever and wherever possible with main meeting-place, simple and easy to use.
In addition, can also have skill additional as follows according to the projection video conference apparatus of the utility model above-described embodiment
Art feature：
According to one embodiment of the present utility model, the smart projector includes：
Mixed-media network modules mixed-media, the mixed-media network modules mixed-media is used to communicate to connect with the video terminal, to receive first audio
Data and the first video data；
Central processing unit, the central processing unit and the mixed-media network modules mixed-media, voice input device, audio output device phase
Even；
Graphics processing unit, described image processing unit is connected with the central processing unit, to first video
Data carry out image procossing formation video image；
Projection Display drive circuit, the Projection Display drive circuit and described image processing unit and central processing unit phase
Even, under the control of the central processing unit by the projecting video image to the projection screen；
Human-computer interaction module, the human-computer interaction module is connected with the center processing.
According to one embodiment of the present utility model, the smart projector also includes：
Human body infrared detection module, the human body infrared detection module is connected with the central processing unit, to detect throwing
Human body presence is whether there is in the range of shadow；
The central processing unit is additionally operable to when the human body infrared detection module is detected in drop shadow spread with the presence of human body
When control the Projection Display drive circuit to close.
According to one embodiment of the present utility model, the mixed-media network modules mixed-media is WIFI module or 3G/4G modules.
According to one embodiment of the present utility model, the central processing unit is the processing with embedded OS
Device.
According to one embodiment of the present utility model, the video terminal is smart mobile phone or computer.
On the other hand, the projection video conference system provided according to the utility model embodiment, including：
Video terminal；
Projection video conference apparatus as described above, the projection video conference apparatus and the video terminal communication link
Connect.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model one embodiment projection video conference apparatus；
Fig. 2 is the structural representation of the utility model one embodiment projection video conference apparatus；
Fig. 3 is the structural representation of the utility model embodiment projection video conference system.
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable
The orientation or position relationship of the instruction such as hour hands ", " counterclockwise " are based on orientation shown in the drawings or position relationship, merely to just
Described in description the utility model with simplified, rather than indicate or imply that the device or element of meaning must be with specific sides
Position, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In description of the present utility model, " multiple " are meant that two or two
More than, unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the utility model.
Shown in reference picture 1, the utility model embodiment provides a kind of projection video conference apparatus 100, can be used for
Many people of different location carry out video conference, including smart projector 10, projection screen 11, audio output device 12, camera dress
Put 14 and voice input device 13.
Specifically, smart projector 10 is used to communicate to connect with outside video terminal 200, receives long-range participant and pass through
The first voice data and the first video data that the video terminal 200 is sent, and first voice data is subjected to audio
Voice signal is exported after processing, the first video data is subjected to output video image after Video processing.
That is, the smart projector 10 can pass through communication network and long-range video terminal with access to communication networks
200 communication connections, after the smart projector 10 is connected with long-range video terminal 200, can receive remote terminal transmission
First voice data and the first video data.First voice data is that long-range participant is gathered by speech ciphering equipments such as microphones
Voice data, sent by wireless network to smart projector 10.And the first video data be long-range participant by taking the photograph
As first-class image capture device collection, first video data can be participant image or participant it is predetermined
Ambient image etc., is sent to smart projector 10 by wireless network.Smart projector 10 receive the first voice data and
First video data, carries out audio frequency process to the first voice data and is converted to voice signal, image is carried out to the first video data
Processing forms video image.
It is understood that video terminal 200 can be the mobile terminals such as smart mobile phone or computer, in this way, can facilitate
Video conference is carried out whenever and wherever possible in long-range participant.
Projection screen 11 is located in the light path of smart projector 10, to receive and show that the smart projector 10 is exported
Video image.Audio output device 12 is connected with the smart projector 10, to receive the voice signal, and will be described
Exported after voice signal amplification.
In other words, smart projector 10 is shown project video images to projection screen 11, together by projection screen 11
When, smart projector 10 exports voice signal to audio output device 12, is exported by audio output device 12.In this way, existing
Field participant can watch the video image of each long-range participant from projection screen 11, and can hear long-range participant
Voice.
Cam device 14 is connected with the smart projector 10, the second video data to collection site participant.
Voice input device 13 is connected with the smart projector 10, the second audio data to collection site participant.Intelligence is thrown
Shadow instrument 10 is additionally operable to send second video data and second audio data to the video terminal 200.
That is, the cam device 14 can be with the second video data of collection site participant, second video counts
According to the image that can be participant or predetermined site environment image etc..And voice input device 13 can then be gathered
The voice of live participant is simultaneously converted into second audio data.Live second video data and second audio data of collection can be with
Sent by wireless network to long-range video terminal 200, audio is carried out by long-range video terminal 200 and Video processing is
Voice and video image can be formed.
Thus, long-range video terminal 200 and the smart projector 10 at scene can carry out the two-way biography of audio ＆ video
Defeated, live participant and long-range participant can form multipart video-meeting.
The projection video conference apparatus 100 provided according to the utility model embodiment, it is defeated using cam device 14, audio
Enter device 13, audio output device 12 and may be combined to form video conference device with smart projector 10, it is possible to achieve regard in many ways
Frequency meeting, its is simple in construction, and without special video conference terminal and display screen etc., cost is low.Meanwhile, participant can be with master
Meeting-place carries out video conference whenever and wherever possible, simple and easy to use.
Shown in reference picture 2, in one embodiment of the present utility model, smart projector 10 include mixed-media network modules mixed-media 101, in
Central processor 102, graphics processing unit 103, Projection Display drive circuit 104 and human-computer interaction module 105.
Specifically, mixed-media network modules mixed-media 101 is used to communicate to connect with the video terminal 200, to receive first audio
Data and the first video data.Preferably, the mixed-media network modules mixed-media 101 can be wireless communication module, such as WIFI module,
3G/4G modules, it is of course also possible to be wire communication module.
Central processing unit 102 is connected with the mixed-media network modules mixed-media 101, voice input device 13, audio output device 12.As
Preferably, the central processing unit 102 can be the processor with embedded OS, such as embedded cortex-A8 bodies
Processor of system structure etc..
Graphics processing unit 103 is connected with the central processing unit 102, to carry out image to first video data
Processing forms video image.
Projection Display drive circuit 104 is connected with described image processing unit 103 and central processing unit 102, in institute
State the projecting video image to the projection screen 11 under the control of central processing unit 102.
Human-computer interaction module 105 is connected with the center processing, and control signal is inputted by the human-computer interaction module 105,
Operation is controlled by central processing unit 102 again, controlled such as switching on and shutting down, return, pause.
In some embodiments of the present utility model, smart projector 10 also includes human body infrared detection module 106, the people
Body infrared detection module, fingerprint identification module 106 is connected with the central processing unit 102, to detect that human body is whether there is in drop shadow spread to be present.Center
It is described that processor 102 is additionally operable to the control in the presence of the human body infrared detection module 106 detects in drop shadow spread and has human body
Projection Display drive circuit 104 is closed.
Due in use, human body may pass through the projected area of smart projector 10 or child be in it is curious and from
The forward observation of the projecting light path smart projector 10, now, human eye may be shone by the throw light of smart projector 10
Penetrate, and the brightness of throw light and intensity are larger, and easily human eye is damaged.In the present embodiment, detected by human body infrared
Module 106 in detection drop shadow spread with whetheing there is human body presence, when the human body infrared detection module 106 is detected in drop shadow spread
Have in the presence of human body, control Projection Display drive circuit 104 to close by central processing unit 102, in this way, the intelligence can be prevented
The problem of projecting apparatus 10 hinders eye.
Shown in reference picture 3, the utility model embodiment additionally provides projection video conference system, including video terminal 200
And the projection video conference apparatus 100 as described in above-mentioned embodiment, projection video conference apparatus 100 and the video terminal 200
Communication connection.
It should be noted that the concrete structure and operation principle of projection video conference apparatus 100 are referring to above-described embodiment institute
State, here, repeating no more.
The projection video conference system provided according to the utility model embodiment, with above-mentioned projection video conference apparatus
100, the projection video device utilizes cam device 14, voice input device 13, audio output device 12 and smart projector
10 may be combined to form, it is possible to achieve multipart video-meeting, its is simple in construction, without special video conference terminal and display screen
Deng cost is low.Meanwhile, participant can carry out video conference whenever and wherever possible with main meeting-place, simple and easy to use.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term
State and be not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be
Combined in an appropriate manner in any one or more embodiments or example.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is not departing from the utility model
Principle and objective in the case of above-described embodiment can be changed in the range of the utility model, change, replace and
Modification.
Claims (7)
1. a kind of projection video conference apparatus, it is characterised in that including：
Smart projector, to be communicated to connect with outside video terminal, receives long-range participant and is sent out by the video terminal
The first voice data and the first video data sent, and first voice data is subjected to output voice letter after audio frequency process
Number, the first video data is subjected to output video image after Video processing；
Projection screen, the projection screen is located in the smart projector light path, to receive and show that the smart projector is defeated
The video image gone out；
Audio output device, the audio output device is connected with the smart projector, to receive the voice signal, and
Exported after the voice signal is amplified；
Cam device, the cam device is connected with the smart projector, and second to collection site participant regards
Frequency evidence；
Voice input device, the voice input device is connected with the smart projector, and to collection site participant
Two voice datas；
The smart projector is additionally operable to send second video data and second audio data to the video terminal.
2. projection video conference apparatus according to claim 1, it is characterised in that the smart projector includes：
Mixed-media network modules mixed-media, the mixed-media network modules mixed-media is used to communicate to connect with the video terminal, to receive first voice data
And first video data；
Central processing unit, the central processing unit is connected with the mixed-media network modules mixed-media, voice input device, audio output device；
Graphics processing unit, described image processing unit is connected with the central processing unit, to first video data
Carry out image procossing formation video image；
Projection Display drive circuit, the Projection Display drive circuit is connected with described image processing unit and central processing unit,
To under the control of the central processing unit by the projecting video image to the projection screen；
Human-computer interaction module, the human-computer interaction module is connected with the center processing.
3. projection video conference apparatus according to claim 2, it is characterised in that the smart projector also includes：
Human body infrared detection module, the human body infrared detection module is connected with the central processing unit, to detect projection model
Human body presence is whether there is in enclosing；
The central processing unit is additionally operable to have control in the presence of human body when the human body infrared detection module is detected in drop shadow spread
The Projection Display drive circuit is made to close.
4. projection video conference apparatus according to claim 2, it is characterised in that the mixed-media network modules mixed-media be WIFI module or
3G/4G modules.
5. projection video conference apparatus according to claim 2, it is characterised in that the central processing unit is with insertion
The processor of formula operating system.
6. projection video conference apparatus according to claim 1, it is characterised in that the video terminal be smart mobile phone or
Computer.
7. a kind of projection video conference system, it is characterised in that including：
Video terminal；
Projection video conference apparatus as any one of claim 1 to 6, the projection video conference apparatus is regarded with described
Frequency terminal is communicated to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621269481.7U CN206533464U (en) | 2016-11-22 | 2016-11-22 | Projection video conference apparatus and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621269481.7U CN206533464U (en) | 2016-11-22 | 2016-11-22 | Projection video conference apparatus and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206533464U true CN206533464U (en) | 2017-09-29 |
Family
ID=59922593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621269481.7U Active CN206533464U (en) | 2016-11-22 | 2016-11-22 | Projection video conference apparatus and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206533464U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108924524A (en) * | 2018-09-21 | 2018-11-30 | 深圳市火乐科技发展有限公司 | A kind of projector based on mobile network |
| CN109660787A (en) * | 2019-02-19 | 2019-04-19 | 深圳荧火智能科技有限公司 | A kind of double ray machine optical projection systems of the passive not flash compatible 2D of 3D of intelligence |
| CN110072076A (en) * | 2019-05-05 | 2019-07-30 | 锐嘉科集团有限公司 | Projection communicator and signal processing method for video conference |
| CN110290416A (en) * | 2019-05-14 | 2019-09-27 | 珠海海奇半导体有限公司 | A kind of the throwing screen device and conference system of integrated video conference system |
| WO2019205197A1 (en) * | 2018-04-27 | 2019-10-31 | Tang Chonghan | Integral projector |
| CN113271427A (en) * | 2020-02-14 | 2021-08-17 | 朱晓鼎 | Conference projection system based on flight control design and control method |
| CN113507586A (en) * | 2021-07-02 | 2021-10-15 | 北京乐驾科技有限公司 | Intelligent conference system and information processing method for intelligent conference |
-
2016
- 2016-11-22 CN CN201621269481.7U patent/CN206533464U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019205197A1 (en) * | 2018-04-27 | 2019-10-31 | Tang Chonghan | Integral projector |
| CN108924524A (en) * | 2018-09-21 | 2018-11-30 | 深圳市火乐科技发展有限公司 | A kind of projector based on mobile network |
| CN108924524B (en) * | 2018-09-21 | 2024-04-02 | 深圳市火乐科技发展有限公司 | Projector based on mobile network |
| CN109660787A (en) * | 2019-02-19 | 2019-04-19 | 深圳荧火智能科技有限公司 | A kind of double ray machine optical projection systems of the passive not flash compatible 2D of 3D of intelligence |
| CN110072076A (en) * | 2019-05-05 | 2019-07-30 | 锐嘉科集团有限公司 | Projection communicator and signal processing method for video conference |
| CN110290416A (en) * | 2019-05-14 | 2019-09-27 | 珠海海奇半导体有限公司 | A kind of the throwing screen device and conference system of integrated video conference system |
| CN113271427A (en) * | 2020-02-14 | 2021-08-17 | 朱晓鼎 | Conference projection system based on flight control design and control method |
| CN113507586A (en) * | 2021-07-02 | 2021-10-15 | 北京乐驾科技有限公司 | Intelligent conference system and information processing method for intelligent conference |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206533464U (en) | Projection video conference apparatus and system | |
| US11388453B2 (en) | Method for processing live-streaming interaction video and server | |
| CA2865545C (en) | Communication control system and control device | |
| WO2019104652A1 (en) | Unmanned aerial vehicle system, and communication method and remote control device therefor | |
| CN104777991A (en) | Remote interactive projection system based on mobile phone | |
| NZ595595A (en) | System and method for hybrid course instruction | |
| CN104967886B (en) | Wireless display method and system | |
| CN106131407A (en) | Shooting synchronous method and synchronizer | |
| CN108924469A (en) | A kind of display screen switching Transmission system, intelligent interaction plate and method | |
| CN105635845B (en) | Session content transmission method and device | |
| CN114691059B (en) | Screen-throwing display method and electronic equipment | |
| CN105785818A (en) | Remote control system and method of science popularization exhibit | |
| CN114845129B (en) | Interaction method, device, terminal and storage medium in virtual space | |
| CN108174119B (en) | Control method of image pickup device, multispectral image pickup apparatus, unmanned aerial vehicle, and computer-readable storage medium | |
| CN109803110A (en) | A kind of image processing method, terminal device and server | |
| JP2018515979A (en) | Communication processing method and electronic apparatus | |
| CN215682450U (en) | High-definition video conference system adopting wireless transmission | |
| CN106657862A (en) | Integrated video conferencing terminal and video conferencing system | |
| CN102202206A (en) | Communication device | |
| CN207573510U (en) | Three-dimensional visualization video conference centralized control system | |
| CN106357982B (en) | Image service device and method | |
| CN106131479B (en) | More equipment display methods and system applied to aircraft | |
| CN112269554A (en) | Display system and display method | |
| CN211830976U (en) | Video conference platform | |
| CN112866729A (en) | Method for reducing live network broadcast time delay and live network broadcast system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220325 Address after: 518000 5 / F, Gaoxin factory, zone 67, Xingdong community, Xin'an street, Bao'an District, Shenzhen, Guangdong Province Patentee after: SHENZHEN WOWOTO TECHNOLOGY Co.,Ltd. Address before: 518000 floor 4, building B, gaoxinxin factory, Liuxian 1st Road, district 67, Xin'an street, Bao'an District, Shenzhen, Guangdong Province Patentee before: Zhang Xinmin |