CN106658225A - Video extension code setting and video playing method and system - Google Patents
Video extension code setting and video playing method and system Download PDFInfo
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- CN106658225A CN106658225A CN201610931770.7A CN201610931770A CN106658225A CN 106658225 A CN106658225 A CN 106658225A CN 201610931770 A CN201610931770 A CN 201610931770A CN 106658225 A CN106658225 A CN 106658225A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/84—Generation or processing of descriptive data, e.g. content descriptors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
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- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
The invention relates to a video extension code setting and video playing method and system wherein the video extension code setting method comprises the following steps: reading the extension information from a preset video file; according to the extension information, setting extension codes; identifying a network abstraction layer unit from the framework of the video file and identifying the extension fields in the network abstraction layer unit; adding the extension codes to the extension fields; updating the network abstraction layer unit and saving the video file. The video extension code setting and video playing method and system of the invention enable a corresponding video to carry more information and increase the carrying amount of the corresponding video. Since the above video can be played via more players, for instance, the special players corresponding to the extension information or other universal players, procedures required by the user to play the video can be reduced.
Description
Technical field
The present invention relates to video signal treatment technique field, more particularly to a kind of Video Expansion code setting and video playback
Method and system.
Background technology
Video can carry various dynamics and static information, have vital effect to information transfer.Normal conditions
Under, above-mentioned video is carried out encoding etc. processing and formed to information such as associated video files and its frameworks, the frame of video file
Frame includes two aspects：Video coding aspect (VCL) and network abstraction aspect (NAL)；Network abstraction aspect passes through net therein
The abstract level units store video formation information of network and the corresponding video player characteristic information of above-mentioned video.
Traditional scheme is typically only capable in universal player and dedicated play to the video obtained by above-mentioned video file coding
Play out on a kind of player in the middle of device, with certain broadcasting limitation.
The content of the invention
Based on this, it is necessary to which the video obtained for traditional scheme has necessarily plays circumscribed technical problem, there is provided
A kind of Video Expansion code is arranged and video broadcasting method and system.
A kind of Video Expansion code method to set up, comprises the steps：
Extension information is read from default video file, extended code is arranged according to the extension information；
Network abstraction aspect unit is recognized from the framework of video file, and is recognized in the network abstraction aspect unit
Extended field；
The extended code is added to extended field, network abstraction aspect unit is updated, and preserves the video file.
A kind of Video Expansion code arranges system, including：
Setup module, for reading extension information from default video file, arranges according to the extension information and extends
Code；
Identification module, for recognizing network abstraction aspect unit from the framework of video file, and recognizes that the network is taken out
As the extended field in level units；
Add module, for the extended code to be added to extended field, updates network abstraction aspect unit, and preserves institute
State video file.
Above-mentioned Video Expansion code method to set up and system, can will read extension information corresponding in default video file
Extended code directly preserves the extended field into network abstraction aspect unit, makes above-mentioned network abstraction aspect unit carry above-mentioned
On the basis of the corresponding extension information of extended code, the other information of original carrying can also be retained, be made entrained by corresponding video
Information content is effectively expanded；The video generated according to above-mentioned network abstraction aspect unit and corresponding video file both can be with
Played out by playing the corresponding special player of above-mentioned extension information, can be utilized again in addition to special disposal extended code
Other players (such as universal player) are played out, and it effectively increases the applicability of corresponding video.
A kind of video broadcasting method, comprises the steps：
The video generated according to video file is sent to destination player；Wherein, the video file is according to above-mentioned
Video Expansion code method to set up gained；
The destination player reads the expansion that the network abstraction aspect unit is carried after receiving and decoding the video
Show code and general code；Wherein, the general code is the content of the universal field carrying of the network abstraction aspect unit；
The destination player is parsed respectively to the extended code and general code, and plays described according to analysis result
Video.
A kind of audio/video player system, including：
Sending module, for the video generated according to video file to be sent to destination player；Wherein, the video text
Part is to arrange system gained according to above-mentioned Video Expansion code；
Decoder module, for the destination player after receiving and decoding the video, reads the network abstract layer
Extended code and general code that face unit is carried；Wherein, the general code is that the universal field of the network abstraction aspect unit is taken
The content of band；
Playing module, parses respectively for the destination player to the extended code and general code, and according to solution
Analysis result plays the video.
Above-mentioned video broadcasting method and system, can be to the corresponding general information of general code in video and extended code correspondence
Extension information play out, it is ensured that its play show information content, effectively increase corresponding result of broadcast.
Description of the drawings
Fig. 1 is the Video Expansion code method to set up flow chart of one embodiment；
Fig. 2 arranges system structure diagram for the Video Expansion code of one embodiment；
Fig. 3 is the video broadcasting method flow chart of one embodiment；
Fig. 4 is the audio/video player system structural representation of one embodiment.
Specific embodiment
Below in conjunction with the accompanying drawings to Video Expansion code setting of the invention and the specific embodiment party of video broadcasting method and system
Formula is described in detail.
With reference to Fig. 1, Fig. 1 show the Video Expansion code method to set up flow chart of one embodiment, comprises the steps：
S10, reads extension information from default video file, and according to the extension information extended code is arranged；
Above-mentioned video file is the text for storing the contents such as the characteristic information of related playing material and corresponding player
Part.Playing material in video file generally arranges material title or material keyword etc. and can uniquely characterize playing material
Identifier.By above-mentioned identifier, it can be determined that whether corresponding playing material can be in conventional player (user's routine use
Various players) in play, the above-mentioned material that can be played in conventional player and its relevant information are general information.On
Some of video file information is stated, due to its specific form or attribute, it is impossible to play in conventional player, needed logical
The special player for crossing special setting realizes its broadcasting, and these information are referred to as extension information, it is generally the case that storage is above-mentioned general
The video file middle part of information includes extension information, in advance the corresponding extension information of special player can be write into above-mentioned video
File, makes video file include extension information on the basis of including general information；Read by identifier or format characteristic again
Take whether playing material and relevant information in video file are general information or extension information.
During above-mentioned video file coding production corresponding video, can arrange general according to above-mentioned general information
Code, according to above-mentioned extension information extended code is arranged, and above-mentioned general code and extended code are write into the relevant position of video file framework,
Make the video that next code is obtained both to have carried general information, extension information can be carried again.Above-mentioned extended code can include
Head character (HEADER) and content character (CONTENT), the length of HEADER is usually 1Byte, and it can prohibit comprising 1bit
Stop bit, 2bit importance indicating bits, 5bit NAL type bits；CONTENT is used for the record extension information content, and indefinite length expands
Exhibition information content type is not limited, can self-defining as needed.
In one embodiment, above-mentioned extended code can include head character and content character.
Extended code in the present embodiment includes head character and content character, can be by above-mentioned head character to corresponding code
Type is identified, and to confirm above-mentioned extended code, is conducive to quickly searching above-mentioned extended code, and then searches above-mentioned extension
The corresponding extension information of code.
S20, recognizes network abstraction aspect unit from the framework of video file, and recognizes the network abstraction aspect unit
In extended field；
(as H.264/AVC) in video encoding standard, the framework of video file can be divided into two aspects：Video coding
Aspect (VCL) and network abstraction aspect (NAL).Wherein, Video coding aspect is used to carry data content, and network abstraction aspect can
To carry associated formatting data or header etc.；The framework of video file is by above-mentioned Video coding aspect and network abstraction
The collaborative work of aspect is ensureing the integrality of corresponding contents, and wherein data are transmitted in respective channels and storage medium
With the fairness for processing.NALU (network abstraction aspect unit) is the basic syntax structure of NAL, and it includes header (usually
One byte) and from the byte stream for being referred to as raw byte sequence payload (RBSP) of VCL.Include NALU's in NALU headers
Type information NAL_UNIT_TYPE, shows that it includes the type of the content of payload.
In traditional scheme, NALU is network abstraction layer unit, and in common video file, NALU only preserves video data
And do not preserve extension information.There was only 8 positions in the head of NALU, wherein NAL_UNIT_TYPE accounts for 5, can represent 0～31.
Wherein 0～12 is the types value for having clear and definite purposes, and 24～31 is untapped types value.The present invention is exactly to adopt between 24～31
Value characterizing extension NALU (extension information corresponding extended code).Do not empty what network abstraction aspect unit was stored simultaneously
Content, but generate extended network Abstraction Layer units and regard to store extension information and be written to the extended network Abstraction Layer units
In frequency file or video flowing.
Above-mentioned steps S20 can be recognized in NALU not according to the setting feature of the framework of video file or relevant criterion
The field (extended field) for being used, is used to above-mentioned extended field, so that NALU carries more information.
In one embodiment, may be used also after the process of the above-mentioned extended field in the network abstraction aspect unit is recognized
To include：
The universal field in network abstraction aspect unit in the video file is read, keeps the universal field to be stored
Content it is constant.
The present embodiment is identified respectively to the extended field and universal field in network abstraction aspect unit, with holding
The Information invariability of universal field carrying is stated, then the untapped extended field of traditional scheme is used, to improve above-mentioned network
The utilization rate of abstract level units, can improve the information content entrained by corresponding video on the basis of screen quality is ensured.
S30, the extended code is added to extended field, updates network abstraction aspect unit, and preserves the video text
Part.
Above-mentioned steps are added the extension being not used by into network abstraction aspect unit by the corresponding extended code of the information that extends
Field, and keep the content that universal field is recorded constant, allow above-mentioned network abstraction aspect unit to carry general information and expansion
Exhibition information, carrying contains much information；According to the video that the network abstraction aspect unit that above-mentioned steps S30 are preserved is generated, both may be used
To play using universal player, the special player specially arranged for extension information can also be used to play, with preferable
Result of broadcast.
The Video Expansion code method to set up that the present invention is provided, can will extend the corresponding extended code of information straight in video file
Preservation is connect to the extended field in network abstraction aspect unit, makes above-mentioned network abstraction aspect unit carry above-mentioned extended code pair
On the basis of the extension information answered, the other information of original carrying can also be retained, obtain the information content entrained by corresponding video
To effectively expansion；The video generated according to above-mentioned network abstraction aspect unit and corresponding video file both can be by playing
The corresponding special player of above-mentioned extension information is played out, and other broadcastings in addition to special disposal extended code can be utilized again
Device (such as universal player) is played out, and it effectively increases the applicability of corresponding video.
In one embodiment, it is above-mentioned that extension information is read from default video file, set according to the extension information
Can also include before the step of putting extended code：
The extension information for needing to show is obtained, the extension information is write into video file.
The present embodiment can be obtained first extend the corresponding playing material of information, and above-mentioned playing material can be according to corresponding video
Corresponding scene determines, such as, for characterizing the playing material corresponding to the video of vehicle condition each can be included on automobile
The measurement amount of measuring instrument and measured value etc.；The broadcasting attribute of playing material can be set according to the concrete feature of playing material
Put.Extension information is determined whether it is by the corresponding format characteristic of playing material.By above-mentioned playing material extending letter
The form write video file of breath.
The present embodiment will extend information write video file, make above-mentioned video file include general information and extension information,
To ensure to be obtained from video file the fairness of extension information.
As one embodiment, the playing material and its relevant information in the range of certain can be encrypted, such as,
The corresponding playing material of extension information and its relevant information are encrypted, to improve the playing material in above range
And its security of relevant information.
In one embodiment, the extended code is being added to extended field, is updating network abstraction aspect unit, and protected
After depositing the process of the video file, can also include：
The corresponding expanding clock information of extension information is obtained, the expanding clock information is entered according to corresponding system clock
Row synchronization process.
The present embodiment can synchronize process, above-mentioned universal timepiece information with expanding clock information and universal timepiece information
Can include that generalized time stabs information, expanding clock information can include that expansion time stabs information, can be above-mentioned logical accordingly
Merged to wait and processed with timestamp information and expansion time stamp information, to realize that corresponding universal timepiece information and expanding clock are believed
The synchronization process of breath.
After the expanding clock information to network abstraction aspect unit synchronizes process, above-mentioned synchronization process can be preserved
Network abstraction aspect unit afterwards.
The present embodiment synchronizes process to expanding clock information, makes corresponding general information and extension information in rear continued broadcasting
The unification or coordination of time are realized during putting, to ensure its result of broadcast.
With reference to shown in Fig. 2, Fig. 2 arranges system structure diagram for the Video Expansion code of one embodiment, including：
Setup module 10, for reading extension information from default video file, arranges according to the extension information and expands
Show code；
Identification module 20, for recognizing network abstraction aspect unit from the framework of video file, and recognizes the network
Extended field in abstract level units；
Add module 30, for the extended code to be added to extended field, updates network abstraction aspect unit, and preserves
The video file.
In one embodiment, above-mentioned Video Expansion code arranges system, also includes：
Keep module, for reading the video file in universal field in network abstraction aspect unit, keep described
The content that universal field is stored is constant.
In one embodiment, above-mentioned Video Expansion code arranges system, also includes：
Acquisition module, for obtaining the extension information for needing to show, by the extension information video file is write.
A pair of the Video Expansion code method to set up 1 that the Video Expansion code setting system that the present invention is provided is provided with the present invention
Should, it is applied to Video Expansion in the technical characteristic and its advantage of the embodiment elaboration of the Video Expansion code method to set up
Code is arranged in the embodiment of system, be hereby give notice that.
With reference to shown in Fig. 3, Fig. 3 is the video broadcasting method flow chart of one embodiment, comprises the steps：
S60, the video generated according to video file is sent to destination player；Wherein, according to the video file
Above-mentioned Video Expansion code method to set up gained；
S70, the destination player reads the network abstraction aspect unit and carries after receiving and decoding the video
Extended code and general code；Wherein, the general code is the content of the universal field carrying of the network abstraction aspect unit；
S80, the destination player is parsed respectively to the extended code and general code, and is played according to analysis result
The video.
Above-mentioned destination player is the special player for playing the corresponding extension information of extended code.Above-mentioned video is sent out
After delivering to destination player, destination player can read NALU therein, recognize what the universal field in above-mentioned NALU was recorded
General code, and the extended code that extended field is recorded, parse to above-mentioned extended code and general code, and tie according to above-mentioned parsing
Fruit carry out video playback, make destination player can and meanwhile realize general information and extension information broadcasting, with preferable
Result of broadcast.
If will carry out encoding the video that obtains according to above-mentioned method for video coding to send to universal player, universal playing
Device can recognize the general code that NALU is carried after receiving and decoding the video, and ignore the extended code in above-mentioned NALU, right
The general code of its identification is parsed, and plays the corresponding general information of general code according to analysis result.So, regarded according to above-mentioned
Frequency coding method is carried out encoding the video for obtaining and both can played in universal player, can be broadcast in special player again
Put, the applicability and use value of corresponding video can be improved.
The video broadcasting method that the present embodiment is provided, can be to the corresponding general information of general code in video and extended code
Corresponding extension information is played out, it is ensured that it plays the information content for showing, effectively increases corresponding result of broadcast.
In one embodiment, it is above-mentioned that extension information is read from default video file, set according to the extension information
Put and can also include after the process of extended code：
The corresponding extension keyword of the extension information is set；
After the process that the destination player is parsed respectively to the extended code and general code, can also include：
The destination player reads the extension keyword of user input, includes according to the extension keyword search described
The extended code of extension keyword, the extended code to being searched is parsed, and obtains the corresponding video content of the extended code, is played
The video content.
In the present embodiment, if user needs the extension information that its concern is inquired about in the video that destination player is played, can be with
To the corresponding extension keyword of destination player input, destination player is set to include the expansion according to above-mentioned extension keyword search
The extended code of keyword is opened up, then the extended code to searching is parsed, and allows destination player to play extension keyword correspondence
Content, that is, play user concern extension information；This further improves broadcasting effect of the above-mentioned video in destination player
Really.
Above-mentioned video broadcasting method, can apply in the playing process of elevator monitoring video, if the elevator of elevator device
Running state information (including but not limited to floor, direction, weigh, switch gate) and fault message only need in special player
Play, the broadcasting attribute of the playing material can be set according to the relevant feature of special player, believe elevator operation
Breath and fault message these playing materials become the extension information in corresponding video file, according to above-mentioned elevator operation information
And fault message arranges corresponding extended code, and above-mentioned extended code is added to extended field, the network to adding extended field is taken out
As level units carry out coded treatment, the video that coded treatment is obtained is sent to special player, above-mentioned special player connects
The video is received and decoded, the extended code and general code of the carrying of network abstraction aspect unit is recognized, respectively to extended code therein
Parsed with general code, and played out according to analysis result, made special player on the basis of same information is played, also
Can be with simultaneous display elevator operation information and elevator faults information, the mesh of various information one when recalling to elevator faults video
So.The video that above-mentioned coded treatment is obtained can also be sent to universal player player, and the general information that video is carried is entered
The conventional decoding of row is played, and allows user to watch the general information that above-mentioned video is carried using universal player.
In actual applications, video bicycle recorder while recorded video can by vehicle-state (including but do not limit
In GPS information, oil mass, direction, brake, throttle, speed) while writing in the video record of reference format, using universal playing
Device only plays video when playing, using then can these records of simultaneous display car status information when video is played during special player
The extension information arranged during video processed.It is being that corresponding playing material carries out coded treatment, during obtaining video, can regarding
Frequency extension NALU in store special efficacy script, using universal player broadcast with when only play video, when being played using special player
Then when video is played script can be called to enter Mobile state special effect processing to video, make video more ornamental.Can with
The keyword message of video pictures is stored in Video Expansion NALU, can be directly according to keyword pair when being played using special player
Video carries out quick-searching and positions with picture.
With reference to shown in Fig. 4, Fig. 4 is the audio/video player system structural representation of one embodiment, including：
Sending module 60, for the video generated according to video file to be sent to destination player；Wherein, the video
File is to arrange system gained according to above-mentioned Video Expansion code；
Decoder module 70, for the destination player after receiving and decoding the video, reads the network abstraction
Extended code and general code that level units are carried；Wherein, the general code is the universal field of the network abstraction aspect unit
The content of carrying；
Playing module 80, parses respectively for the destination player to the extended code and general code, and foundation
Analysis result plays the video.
The audio/video player system that the present invention is provided is corresponded with the video broadcasting method that the present invention is provided, in the video
Technical characteristic that the embodiment of player method is illustrated and its advantage suitable for the embodiment of audio/video player system, hereby
Statement.
The setting of Video Expansion code, method for video coding and system that the present invention is provided, to not making in the NALU of video file
Field is identified, and the unused field (extended field) using above-mentioned identification carries out extending information pair in video file
The record of the extended code answered, allows corresponding video while carrying general information and extension information, effectively increases video
Information carrying amount；Above-mentioned video is carried after general information and extension information, both can be read by universal player, again can be by it
He is used to play the special player of content corresponding to extension information and is read, and its applicability is improved significantly.Based on upper
The video broadcasting method and system of the setting of Video Expansion code, method for video coding and system are stated, it is corresponding to general code in video
General information and the corresponding extension information of extended code are played out, it is ensured that it plays the information content for showing, with higher
Result of broadcast.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that for one of ordinary skill in the art comes
Say, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. a kind of Video Expansion code method to set up, it is characterised in that comprise the steps：
Extension information is read from default video file, extended code is arranged according to the extension information；
Network abstraction aspect unit is recognized from the framework of video file, and recognizes the extension in the network abstraction aspect unit
Field；
The extended code is added to extended field, network abstraction aspect unit is updated, and preserves the video file.
2. Video Expansion code method to set up according to claim 1, it is characterised in that the extended code includes head character
With content character.
3. Video Expansion code method to set up according to claim 1, it is characterised in that recognizing the network abstraction aspect
Also include after the process of the extended field in unit：
The universal field in network abstraction aspect unit in the video file is read, it is interior that the holding universal field is stored
Hold constant.
4. the Video Expansion code method to set up according to any one of claims 1 to 3, it is characterised in that described from default
In video file read extension information, according to the extension information arrange extended code the step of before also include；
The extension information for needing to show is obtained, the extension information is write into video file.
5. a kind of Video Expansion code arranges system, it is characterised in that include：
Setup module, for reading extension information from default video file, according to the extension information extended code is arranged；
Identification module, for recognizing network abstraction aspect unit from the framework of video file, and recognizes the network abstract layer
Extended field in the unit of face；
Add module, for the extended code to be added to extended field, updates network abstraction aspect unit, and regards described in preserving
Frequency file.
6. Video Expansion code according to claim 5 arranges system, it is characterised in that also include：
Keep module, for reading the video file in universal field in network abstraction aspect unit, keep described general
The content that field is stored is constant.
7. the Video Expansion code according to claim 5 or 6 arranges system, it is characterised in that also include：
Acquisition module, for obtaining the extension information for needing to show, by the extension information video file is write.
8. a kind of video broadcasting method, it is characterised in that comprise the steps：
The video generated according to video file is sent to destination player；Wherein, the video file is according to claim 1
To the Video Expansion code method to set up gained described in 4 any one；
The destination player reads the extended code that the network abstraction aspect unit is carried after receiving and decoding the video
And general code；Wherein, the general code is the content of the universal field carrying of the network abstraction aspect unit；
The destination player is parsed respectively to the extended code and general code, and is regarded described in foundation analysis result broadcasting
Frequently.
9. video broadcasting method according to claim 8, it is characterised in that described reading from default video file is expanded
Exhibition information, also includes after the process that extended code is arranged according to the extension information：
The corresponding extension keyword of the extension information is set；
After the process that the destination player is parsed respectively to the extended code and general code, also include：
The destination player reads the extension keyword of user input, and according to the extension keyword search extension is included
The extended code of keyword, the extended code to being searched is parsed, and obtains the corresponding video content of the extended code, plays described
Video content.
10. a kind of audio/video player system, it is characterised in that include：
Sending module, for the video generated according to video file to be sent to destination player；Wherein, the video file is
Video Expansion code according to any one of claim 5 to 7 arranges system gained；
Decoder module, for the destination player after receiving and decoding the video, reads the network abstraction aspect list
Extended code and general code that unit carries；Wherein, the general code is the universal field carrying of the network abstraction aspect unit
Content；
Playing module, parses respectively for the destination player to the extended code and general code, and according to parsing knot
The video is put in carpostrote.
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| CN110248221A (en) * | 2019-06-18 | 2019-09-17 | 北京物资学院 | A kind of video ads dynamic insertion method and device |
| WO2020034984A1 (en) * | 2018-08-14 | 2020-02-20 | 广州虎牙信息科技有限公司 | Video image processing |
| CN111200760A (en) * | 2019-11-26 | 2020-05-26 | 安徽文香信息技术有限公司 | Data processing method and device and electronic equipment |
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| CN106658225B (en) | 2019-11-26 |
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