CN109660847A - Control method and device, set-top box to digital video reception card descrambling - Google Patents
Control method and device, set-top box to digital video reception card descrambling Download PDFInfo
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- CN109660847A CN109660847A CN201811580007.XA CN201811580007A CN109660847A CN 109660847 A CN109660847 A CN 109660847A CN 201811580007 A CN201811580007 A CN 201811580007A CN 109660847 A CN109660847 A CN 109660847A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000012545 processing Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000013507 mapping Methods 0.000 claims description 4
- 238000010304 firing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013523 data management Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
-
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
- H04N21/42206—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor characterized by hardware details
- H04N21/42221—Transmission circuitry, e.g. infrared [IR] or radio frequency [RF]
-
- 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
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4383—Accessing a communication channel
-
- 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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440218—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4
-
- 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
- H04N21/47—End-user applications
- H04N21/482—End-user interface for program selection
- H04N21/4825—End-user interface for program selection using a list of items to be played back in a given order, e.g. playlists
-
- 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
- H04N21/47—End-user applications
- H04N21/488—Data services, e.g. news ticker
- H04N21/4882—Data services, e.g. news ticker for displaying messages, e.g. warnings, reminders
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention relates to a kind of control method and device to digital video reception card descrambling, set-top box.This method comprises: obtaining the control signal that remote controler is sent；When the control signal designation DTV cuts out first kind channel, card cam, which is received, to digital video sends Program Map Table PMT, so that the cam card stops descrambling to the program under the first kind channel according to the specified parameter that in the pmt table includes that treated.In the present embodiment when DTV cuts out first kind channel, the pmt table comprising treated specified parameter is sent to cam card, cam card can be made to stop descrambling to the program under first kind channel, so that pop-up cimmi prompting frame is avoided, promotion user's viewing experience.
Description
Technical field
The present invention relates to DTV control technology field more particularly to a kind of controls to digital video reception card descrambling
Method and device, set-top box.
Background technique
Currently, meeting integrated digital video receives card (cam card), existing number electricity on digital TV integrated machine or set-top box
Depending on all-in-one machine, perhaps set-top box starts various applications or is cut under the channel DTV (Digital television DTV)
When shifting to other channels, only suspend the program under (pause) broadcasting channel DTV, the other modules for serving the channel DTV still exist
It works normally.Such as the corresponding digital video bit stream of received program, tuner is still tuned it, demultiplexer
Still to it includes audio, video data separated, cam card still the scrambled digital video bit stream such as descrambles.This
Sample, when switching back to the channel DTV again, it is possible to reduce various module startings and initialization time used, reaching quickly to broadcast
Put the effect of program.
However, in the case where being switched to other channels or starting application, since cam card still works normally, meeting
Pop up various man-machine interactive interface multimedia interface (cimmi) prompting frames, the various prompts of cimmi prompting frame, that is, cam card pop-up
Information, such as prompt smart card is not plugged, with no authorized and input pin code and password.
To prevent pop-up cimmi prompting frame, settling mode, is not the channel DTV or Nixie tube when detecting at present
When platform (Data Management Platform, DMP), cimmi prompting frame is intercepted by television, to avoid showing
Cimmi prompting frame.However, existing settling mode needs persistently to judge whether it is the human-computer interaction message of cam card transmission, it is relatively more tired
It is trivial.It is subsequent when switching back into the channel DTV in addition, if shielding pin code frame, cannot may correctly it descramble for some time.
Summary of the invention
The present invention provide it is a kind of to digital video reception card descrambling control method and device, set-top box, to solve correlation
Deficiency in technology.
In a first aspect, the embodiment of the invention provides a kind of control methods to digital video reception card descrambling, comprising:
Obtain the control signal that remote controler is sent；
When the control signal designation DTV cuts out first kind channel, card cam is received to digital video and sends section
Mesh mapping table PMT, so that the cam card is according to the specified parameter that in the pmt table includes that treated, it is logical to the first kind
Program under road stops descrambling.
Optionally, the first kind channel includes at least following at least one: the channel DTV DTV and the channel DMP.
Optionally, the specified parameter comprises at least one of the following: describing sub- ca_descriptor, audio/video flow address
PID, Business Stream address serviceid and Program Map Table command address ca_pmt_cmd_id.
Optionally, if specified parameter is to describe sub- ca_descriptor, processing mode is to delete in the pmt table
Sub- ca_descriptor is described.
Optionally, if specified parameter is audio/video flow address PID, processing mode is by the audio/video flow address PID
It is revised as the first preset value；And/or
If specified parameter is the Business Stream address serviceid, processing mode is by the Business Stream address
Serviceid is revised as the second preset value.
Optionally, if specified parameter is Program Map Table command address ca_pmt_cmd_id value, processing mode is by institute
It states Program Map Table command address ca_pmt_cmd_id value and is revised as 4.
Second aspect, the embodiment of the invention provides a kind of control devices to digital video reception card descrambling, comprising:
Signal acquisition module is controlled, for obtaining the control signal of remote controler transmission；
Mapping table sending module, for when the control signal designation DTV cuts out first kind channel, to number
Video reception card cam sends Program Map Table PMT, so that the cam card is specified according in the pmt table including that treated
Parameter stops descrambling to the program under the first kind channel.
The third aspect, the embodiment of the invention provides a kind of set-top boxes, including processor and the executable finger of storage processor
The memory of order；The processor is connect with the memory, can read executable instruction out of described memory to realize
The step of described in first aspect to the control method of digital video reception card descrambling.
Fourth aspect, the embodiment of the invention provides a kind of digital TV integrated machines, which is characterized in that including processor and
The memory of storage processor executable instruction；The processor is connect with the memory, can be read out of described memory
The step of executable instruction is taken to realize the control method described in first aspect to digital video reception card descrambling.
As seen from the above technical solutions, in the control signal designation number electricity for getting remote controler transmission in the present embodiment
When depending on cutting out first kind channel, the pmt table comprising treated specified parameter is sent to cam card, cam card can be made according to specifying
Parameter stops descrambling to the program under first kind channel, to avoid pop-up cimmi prompting frame, promotes user's viewing experience.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is a kind of process of control method to digital video reception card descrambling shown according to an exemplary embodiment
Schematic diagram；
Fig. 2 is a kind of process of control method to digital video reception card descrambling shown according to an exemplary embodiment
Schematic diagram；
Fig. 3 is a kind of frame of control device to digital video reception card descrambling shown according to an exemplary embodiment
Figure；
Fig. 4 is a kind of block diagram of set-top box shown according to an exemplary embodiment；
Fig. 5 is a kind of block diagram of digital TV integrated machine shown according to an exemplary embodiment.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
When starting various applications or switching channel, pause plays number for existing digital TV integrated machine or set-top box
In the case that TV (Digital television, DTV) and backstage still can receive and descramble digital video bit stream, cam card
It will pop up cimmi prompting frame, influence user's viewing.
For this purpose, the embodiment of the invention provides a kind of control method to digital video reception card descrambling, the control method
It is executed by set-top box or digital TV integrated machine, design is, is switching to other channels from the channel DTV or the channel DMP
When, processing is sent to the pmt table of the cam card specified parameter that includes that treated, and treated specifies the parameter to be according to these for cam card
It can determine and descrambling work is stopped to the program under the channel DTV or the channel DMP, cimmi prompting frame can be popped up to avoid cam card.
Fig. 1 is a kind of process of control method to digital video reception card descrambling shown according to an exemplary embodiment
Schematic diagram.Referring to Fig. 1, the control method of a kind of pair of digital video reception card descrambling, including step 101~step 102, with machine top
Box is described for executing, in which:
101, obtain the control signal that remote controler is sent.
In the present embodiment, when the key on the remote controler that user's operation matches with set-top box, remote controler be can be generated
Then control signal corresponding with the key will control signal radiation into space.Set-top box can be in real time or according to default
Period is scanned, and can receive the control signal.
Wherein, it can be connected using infrared mode between remote controler and set-top box.
102, when the control signal designation DTV cuts out first kind channel, card cam hair is received to digital video
Program Map Table PMT is sent, so that after the digital video receives cam card according to the processing for including in the PMT Program Map Table
Specified parameter, under the first kind channel program stop descrambling.
In the present embodiment, set-top box can decode it upon the reception of control signals, to obtain control instruction.It is based on
The corresponding relationship of pre-stored control instruction and destination channel, set-top box can inquire destination channel according to control instruction,
And determine whether destination channel belongs to first kind channel.Set-top box is needed using cam card under first kind channel under the channel
Scrambled program descrambled, then by cam card return descrambling after program play out.Here, first kind channel includes at least
Following at least one: the channel DTV DTV and the channel DMP.For convenience of description, other subsequent in addition to first kind channel are logical
Road is referred to as the second class channel.
In the present embodiment, set-top box can also inquire current channel, pass through current channel and the corresponding mesh of control instruction
Mark channel can be determined that from the second class channel incision first kind channel (i.e. incision first kind channel) or from first kind channel
Cut the second class channel (cutting out first kind channel).
It should be noted that for cutting out from first kind channel to first kind channel and being swapped out to from the second class channel
The switching type in two class channels, such as first kind channel cut out first kind channel, intermediate that cam card is allowed for pop up originally
Cimmi prompting frame；For another example, it cuts out from the second class channel to the second class channel, it is intermediate that cam card is not allowed for pop up cimmi originally
Prompting frame, both cut out type not within the scope of the considerations of the application, can according to processing scheme in the related technology into
Row processing.
In the present embodiment, set-top box is according to incision first kind channel or cuts out first kind channel and can determine and is sent to
The pmt table of cam card, comprising:
If cutting first kind channel from the second class channel, that is, it is cut into the channel DTV or the channel DMP, then set-top box is from originally
It reads pmt table and is sent to cam card in ground.Cam card can carry out the descrambling work to digital video bit stream based on pmt table, wherein
The scheme that cam card descrambles work can refer to the relevant technologies, be not limited thereto.
It should be noted that local pmt table is obtained from digital video bit stream, acquisition modes can be with reference to related skill
Art, the application are not construed as limiting.
If cutting the second class channel from first kind channel, that is, the channel DTV or DMP are cut out, this does not need logarithm in the process
Word video code flow is descrambled, then set-top box reads pmt table from local, is then handled the specified parameter in pmt table, it
The pmt table comprising treated specified parameter is sent to cam card afterwards.Specified parameter can based on treated in pmt table for cam card
To determine to stop the program under the first kind channel descrambling work.Here, treated, and specified parameter is used to indicate cam card pair
Program under first kind channel stops descrambling.
It should be noted that cam card is only off under first kind channel after cutting out first kind channel in the present embodiment
Digital video bit stream is descrambled, but the other modules for serving first kind channel are still working normally, i.e., the first kind is logical
Road is transferred to running background.
It should be noted that since the present embodiment " is starting under first kind channel various applications or is switching to second
When class channel, only pause plays the program under first kind channel, but serves other modules in first kind channel still just
Often work, if cam card will pop up cimmi prompting frame, influence user watch " on the basis of improve, so, in the present embodiment
Cut out first kind channel include from first kind channel cut the second class channel and pause play first kind channel under section
Start various applications when mesh.
In the present embodiment, specified parameter is comprised at least one of the following: describing sub- ca_descriptor, audio/video flow address
PID, Business Stream address serviceid and Program Map Table command address ca_pmt_cmd_id.Therefore, set-top box is to pmt table
Carrying out processing may include following manner:
Mode one deletes the sub- ca_descriptor of description in pmt table.
Since ca_descriptor is used to indicate the CA system banner to scrambled digital video bit stream, so cam card is read
It gets that ca_descriptor in pmt table is deleted, then can determine that currently playing digital video bit stream is not scrambled
Clear stream, under this scene, cam card can stop descrambling work.Correspondingly, after stopping descrambling work, cam card does not retransmit various prompts
Message no longer pops up cimmi prompting frame.
Audio/video flow address PID is revised as the first preset value by mode two；And/or by Business Stream address serviceid
It is revised as the second preset value.
Wherein, the first preset value can be audio/video flow address PID the value that is of little use (or illegal value), for example, 0.The
Two preset values can be Business Stream address serviceid the value that is of little use (or illegal value), for example, 0.
Since audio/video flow address PID is used to indicate the audio, video data for the program for currently needing to descramble, so cam card is read
Getting audio/video flow address PID in pmt table is the first preset value and/or when Business Stream address serviceid is the second preset value,
Cam card can be searched less than program corresponding with the first preset value and/or the second preset value, and cam card can stop descrambling under this scene
Work.
Program Map Table command address ca_pmt_cmd_id value is revised as 4 by mode three.
Cam card reads in pmt table ca_pmt_cmd_id value when being 4, can determine and not carry out to the program of destination channel
Descrambling.Wherein, provide in cam card and set top box interactive agreement: ca_pmt_cmd_id is used to indicate the visit inquired about user
Ask the message of power；Ca_pmt_cmd_id value is 4, indicates that cam card no longer descrambles the audio, video data of program；ca_pmt_
Cmd_id value be other values, such as 1,2,8, expression cam card normally the audio, video data of program is descrambled.
So far, first kind channel is cut out in the control signal designation DTV for getting remote controler transmission in the present embodiment
When, the pmt table comprising treated specified parameter is sent to cam card, can make cam card according to specified parameter to first kind channel
Under program stop descrambling, thus avoid pop-up cimmi prompting frame, promoted user's viewing experience.
Fig. 2 is a kind of process of control method to digital video reception card descrambling shown according to an exemplary embodiment
Schematic diagram establishes communication connection referring to fig. 2 between remote controler and set-top box, when detecting some key of user's operation, response
Control signal is generated in the operation and is sent to set-top box.Set-top box receives the control signal from remote controler, according to the control
Signal is available to the corresponding destination channel of control signal.Set-top box can also obtain current channel, then according to current logical
Road and destination channel are incision first kind channels or cut out first kind channel.By taking first kind channel is DTV DTV as an example
It is described.
When being cut into DTV, set-top box reads local pmt table, and pmt table is then sent to cam card, cam card according to
Pmt table descrambles digital video bit stream, and normally pops up cimmi prompting frame.
When cutting out DTV, set-top box reads local pmt table, then handles the specified parameter in pmt table, and will include
The pmt table for specified parameter that treated is sent to cam card.According to treated in pmt table, specified parameter stops to number cam card
Video code flow is descrambled, and also no longer pops up cimmi prompting frame accordingly.
The embodiment of the invention also provides a kind of control devices to digital video reception card descrambling, and Fig. 3 is shown according to one
Example property implements a kind of block diagram of the control device to digital video reception card descrambling exemplified.It is a kind of that number is regarded referring to Fig. 3
Frequency receives the control device that card descrambles
Signal acquisition module 301 is controlled, for obtaining the control signal of remote controler transmission；
Mapping table sending module 302, for when the control signal designation DTV cuts out first kind channel, to number
Word video reception card cam sends Program Map Table PMT, so that the cam card is according to the finger that in the pmt table includes that treated
Determine parameter, descrambling is stopped to the program under the first kind channel.
So far, first kind channel is cut out in the control signal designation DTV for getting remote controler transmission in the present embodiment
When, the pmt table comprising treated specified parameter is sent to cam card, can make cam card according to specified parameter to first kind channel
Under program stop descrambling, thus avoid pop-up cimmi prompting frame, promoted user's viewing experience.
The embodiment of the invention also provides a kind of set-top boxes, and referring to fig. 4, including processor 401 and storage processor 401 can
The memory 402 executed instruction；The processor is connect by communication bus 403 with memory 402, can be from memory 402
It is interior to read the step of executable instruction is to realize the control method shown in FIG. 1 descrambled to digital video reception card.
The embodiment of the invention also provides a kind of digital TV integrated machines, at Fig. 5, including processor 501 and storage
Manage the memory 502 of 501 executable instruction of device；Processor 501 is connect by communication bus 503 with memory 502, can be from depositing
The step of executable instruction is to realize the control method shown in FIG. 1 descrambled to digital video reception card is read in reservoir 502.
Those skilled in the art will readily occur to of the invention its after considering specification and the invention invented here of practice
Its embodiment.The present invention is directed to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
The common knowledge in the art that person's adaptive change follows general principle of the invention and do not invent including the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
Claims (9)
1. a kind of control method to digital video reception card descrambling characterized by comprising
Obtain the control signal that remote controler is sent；
When the control signal designation DTV cuts out first kind channel, card cam transmission program is received to digital video and is reflected
Firing table PMT, so that the cam card is according to the specified parameter that in the pmt table includes that treated, under the first kind channel
Program stop descrambling.
2. control method according to claim 1, which is characterized in that the first kind channel includes at least following at least one
Kind: the channel DTV DTV and the channel DMP.
3. control method according to claim 1, which is characterized in that the specified parameter comprises at least one of the following: retouching
State sub- ca_descriptor, audio/video flow address PID, Business Stream address serviceid and Program Map Table command address ca_
pmt_cmd_id。
4. control method according to claim 3, which is characterized in that if specified parameter is to describe sub- ca_descriptor,
Then processing mode is the sub- ca_descriptor of description deleted in the pmt table.
5. control method according to claim 3, which is characterized in that if specified parameter is audio/video flow address PID, locate
Reason mode is that the audio/video flow address PID is revised as the first preset value；And/or
If specified parameter is the Business Stream address serviceid, processing mode is by the Business Stream address serviceid
It is revised as the second preset value.
6. control method according to claim 3, which is characterized in that if specified parameter is Program Map Table command address
Ca_pmt_cmd_id, then processing mode is that the Program Map Table command address ca_pmt_cmd_id value is revised as 4.
7. a kind of control device to digital video reception card descrambling characterized by comprising
Signal acquisition module is controlled, for obtaining the control signal of remote controler transmission；
Mapping table sending module, for when the control signal designation DTV cuts out first kind channel, to digital video
It receives card cam and sends Program Map Table PMT, so that the cam card is joined according in the pmt table to include that treated specified
Number stops descrambling to the program under the first kind channel.
8. a kind of set-top box, which is characterized in that the memory including processor and storage processor executable instruction；The processing
Device is connect with the memory, can read executable instruction out of described memory to realize any one of claim 1~6 institute
The step of control method that digital video reception card is descrambled stated.
9. a kind of digital TV integrated machine, which is characterized in that the memory including processor and storage processor executable instruction；
The processor is connect with the memory, can read executable instruction out of described memory to realize claim 1~6
The step of control method of described in any item pairs of digital video reception card descramblings.
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| CN201811580007.XA CN109660847A (en) | 2018-12-24 | 2018-12-24 | Control method and device, set-top box to digital video reception card descrambling |
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Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Applicant after: Hisense Visual Technology Co., Ltd. Address before: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Applicant before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |
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Application publication date: 20190419 |