CN106331426A - Method for controlling display content synchronization by Bluetooth - Google Patents
Method for controlling display content synchronization by Bluetooth Download PDFInfo
- Publication number
- CN106331426A CN106331426A CN201610789956.3A CN201610789956A CN106331426A CN 106331426 A CN106331426 A CN 106331426A CN 201610789956 A CN201610789956 A CN 201610789956A CN 106331426 A CN106331426 A CN 106331426A
- Authority
- CN
- China
- Prior art keywords
- equipment
- forwarding unit
- transmission
- data
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/06—Generation of synchronising signals
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides a method for controlling display content synchronization by Bluetooth. The method comprises the steps that an AR device A at a transmitting end and an AR device B at a receiving end separately establish a Bluetooth transmission network connection with a group of forwarding devices C, a forwarding device is selected according to transmission performance parameters between the devices A and B and each forwarding device, and a screen image is forwarded to the device B. The present invention provides a method for controlling display content synchronization by Bluetooth, so that influence of direct link pressure of an AR device on a video fluency effect is reduced.
Description
Technical field
The present invention relates to screen show, particularly to the method for a kind of Bluetooth control display content synchronization.
Background technology
Multimedia equipment in people's Working Life oneself through from traditional with single smart machine, be transformed into desktop computer,
Smart mobile phone, panel computer and television set and virtual reality, augmented reality equipment exist jointly.Therefore from single equipment,
Gradually it is transformed into synchronization, comprehensive these equipment of use, it is possible to obtain more preferable Consumer's Experience.Traditional computer simultaneous display is put down
Platform is typically as cable LAN Environment Design.But, in the scene of cloud computing, user is likely to be at various net
Network environment, such as bluetooth, 3G network, WiFi.Existing simultaneous display platform not yet considers the extensibility of multiple network scene,
In bandwidth, postpone and become bottleneck in picture quality.Such as, some method picture pixel is divided into different bitmap layer it
In, generally this can cause higher encoder complexity；Picture streams media compression efficiency is not ideal enough.
Summary of the invention
For solving the problem existing for above-mentioned prior art, the present invention proposes a kind of Bluetooth control display content synchronization
Method, including:
The AR equipment B of the AR device A of transmitting terminal and receiving terminal sets up Bluetooth transmission network even respectively with one group of forwarding unit C
Connect, select forwarding unit according to the transmission performance parameter between device A, B and each forwarding unit, carry out screen picture to equipment B
The forwarding in face.
Preferably, described forwarding unit C includes multiple equipment C1…Cn, described method also includes:
Device A sends handshake and receives data to forwarding unit C, forwarding unit C and calculate device A and forwarding unit C
Between the packet loss of data transmission link and the transmission performance parameter of transfer rate composition；Equipment C sends handshake to equipment
B, equipment B return data to forwarding unit C, between forwarding unit C calculating forwarding unit C and equipment B, data transmission link loses
Bag rate and the transmission performance parameter of transfer rate composition；Forwarding unit C by between himself calculating speed and device A and
And the transmission performance parameter device A postbacking sending end sent along between equipment B；
Forwarding unit C similar for this parameter, according to the transmission performance parameter of alternative forwarding unit C, is divided into one group by device A,
As forwarding unit group；For same forwarding unit C, calculate between device A and forwarding unit C, forwarding unit C and equipment B
Transfer rate, and with the least transmission rate value for reference to being grouped；Basic transmission when device A is transmitted according to it
The forwarding that the transmission performance parameter of data rate and forwarding unit group chooses one group of forwarding performance to meet predefined transmission requirement sets
Standby group, as selected forwarding unit group, i.e. selects transfer rate to pass more than in the alternative forwarding unit group of basic transmitted data rates
Maximum one group of defeated speed is as selected forwarding unit group, and sets up repeated link；
Self image information is captured by device A, by the time when image information captured and crawl and equipment
The parameters such as identification number are encapsulated in transmitting data frame in the lump, and to equipment B and have built up link chain by Bluetooth transmission network
The selected forwarding unit group connect sends same transmission frame number evidence；The selected forwarding unit group established the link with device A and equipment B will
The transmission data received are forwarded to equipment B by Bluetooth transmission network；When equipment B receives device A or selected forwarding unit
Group starts after the data of any one device transmission timing, and waits the data that other equipment transmit；Timing time exceedes pre-
If maximum delay time, equipment B notice not yet transmission data is transferred to the device A corresponding to the link of equipment B or forwarding sets
Standby C abandons the transmission data of time-out；Then the transmission data having been received by are carried out selection combining by equipment B；Equipment B will process
After transmission data carry out screen and show；
When a certain moment is carried out synchronicity detection from the transmission data that device A and equipment C receive, calculate previous moment
The asynchronous number of times of terminal feedback of each road picture transmission information, by itself and the acceptable threshold of the asynchronous number of times of terminal feedback arranged
The not acceptance threshold of the asynchronous number of times of value, terminal feedback compares, and in Ruo Gelu transmission data, minimum terminal feedback is asynchronous
The number of times acceptable thresholds less than the asynchronous number of times of terminal feedback or the not acceptance threshold more than the asynchronous number of times of terminal feedback,
Then select the video data that road transmission data are equipment B that the asynchronous number of times of terminal feedback is minimum；In Ruo Gelu transmission data
Minimum asynchronous number of times is not between the acceptable thresholds of the asynchronous number of times of terminal feedback and accepting of the asynchronous number of times of terminal feedback
Between threshold value, then the display number that transmission data are equipment B that in the transmission data that selected equipment B receives, occurrence number is most
According to, if there are the transmission data that occurrence number is identical, then choose transmission data that wherein the asynchronous number of times of terminal feedback is low for setting
The video data of standby B.
The present invention compared to existing technology, has the advantage that
The present invention proposes the method for a kind of Bluetooth control display content synchronization, reduces the pressure of AR equipment direct link
To video smoothness influential effect.
Accompanying drawing explanation
Fig. 1 is the flow chart of the method for a kind of Bluetooth control display content synchronization according to embodiments of the present invention.
Detailed description of the invention
Hereafter provide retouching in detail one or more embodiment of the present invention together with the accompanying drawing of the diagram principle of the invention
State.Describe the present invention in conjunction with such embodiment, but the invention is not restricted to any embodiment.The scope of the present invention is only by right
Claim limits, and the present invention contains many replacements, amendment and equivalent.Illustrate in the following description many details with
Thorough understanding of the present invention is just provided.These details are provided for exemplary purposes, and without in these details
Some or all details can also realize the present invention according to claims.
An aspect of of the present present invention provides the method for a kind of Bluetooth control display content synchronization.Fig. 1 is real according to the present invention
Execute the method flow diagram of a kind of Bluetooth control display content synchronization of example.
The display frame of input, first during picture compression, is divided into block with fixed size, based on frame sequence by the present invention
The in-frame correlation of row and frame-to-frame correlation compressed encoding；Coded method based on content-adaptive, i.e. utilizes bitmap region special
Levy and picture is categorized as bitmap region and character area；Bitmap region and character area are respectively placed in bitmap layer and character layer,
Bitmap region uses picture coding to process, and character area carries out color description and quantization and utilizes light intensity and saturated
The passage dependency coding of degree.In picture synchronization transmitting procedure, it is divided into multiple block according to image content and carries out independence
Coding and transmission；According to the characteristic of above compression method, utilize the delay improved to reduce method and transmit picture.
The present invention utilizes many AR equipment collaboration picture synchronization display platform, same in AR terminal disposition based on remote Agent
Step display platform.Agent maintain a virtual synchronous display platform for resolving, typesetting and drafting display picture, draw out
The picture image come is transferred to AR terminal in encoded.AR terminal receives and decoded bit stream, is then demonstrated by picture image
Come.On the basis of AR terminal simultaneous display platform based on Agent, utilize display picture playing progress rate synchronization mechanism, it is achieved
The seamless connection of playing progress rate.
Input picture image first with 64 × 64 size piecemeal.Then by carrying out difference inspection between consecutive frame
Surveying, find out the most constant block of content and position, the present invention is referred to as time shift block.Encoded by combination entropy and compress each time shift
The type of block, but in remaining block, perform motion detection based on block boundary alignment find out that content is constant to be subjected to displacement
Region.For each moving mass, its type and motion vector are encoded.In the constant content detected between consecutive frame
Afterwards, it is bitmap region and character area by remaining block sort, is then respectively adopted different methods and is compressed.
The present invention is when classification, and for a block i, making XP (i) and YP (i) represent respectively will be current under current gradient factor
Territorial classification is bitmap region distortion rate when encoding and bit rate, XT (i) and YT (i) represent current gradient system respectively
Several lower current region is categorized as distortion rate when character area encodes and bit rate.If meeting following condition:
XT (i)≤XP (i), and YT (i) ＜ YP (i)
Then current region is classified as character area.
If meeting following condition:
XP (i) ＜ XT (i), and YP (i)≤YT (i)
Then current region is classified as bitmap region.
Otherwise, current region will be classified with Lagrange rate-distortion optimization algorithm.
After having classified, first carry out the quantization of Pixel-level, four kinds of the highest for the frequency of occurrences in block colors are determined
Based on color.The quantization function used is expressed as follows:
Wherein x is intended to the color quantified, BCk, it is 4 basic colors, k=0 ..., 3, Δ1And Δ2It is by two predetermined amount
Quantizer input quantization increment.
If | x-BCk|≥Δ1, then this color x is referred to as non-basic color.Three Color Channels of word content are each
Independently quantify.After quantifying, each block S (i, j) (0≤i≤w-l, 0≤j≤i-1, the w of the picture image of input
Width and the height of block respectively with h) each Color Channel can with a gray matrix I (i, j) and basic color, non-
Basis color describes.I (i, j) is defined as follows,
If S (i, j)-BCk ＜ Δ 1, then I (i, j)=k, otherwise I (i, j)=4
When compressing word content, if text pixel accounts for maximum ratio in certain block, then method is preferentially classified as
Character area is compressed.Basis color compression text pixel is utilized to utilize non-basic color compress bitmap pixel can keep compression
High efficiency during text pixel.
Then (i, (i j) represents word j) to be converted into two dimension associated diagram P by gray matrix I to use following method
The Two-Dimensional Correlativity of content.
So two dimension associated diagram is done one-dimensional scanning and just can utilize the Two-Dimensional Correlativity of word content.When P (i, j)=0
Time, further code index value I (i, j).
For the every a line in block to be encoded, first attempt to full line pattern its coupling coding.Without full line
Pattern can be mated, then this row is decomposed into several pixel groups, and each pixel groups is carried out pattern match.Pixel two dimension
Associated diagram numerical value represents the pattern of pixel domain.By every L pixel two dimension associated diagram numerical value one pixel groups two-dimensional symensional symbol of composition,
Then according to the probability distribution of pixel groups pattern, it is carried out combination entropy coding.Pixel groups two-dimensional symensional symbol can be further converted into
Simple symbol 0 and 1, as follows:
Wherein k=0 ..., w/L-1, j=0 ..., h-1；M takes [0, L-1]
If (i, pixel groups two-dimensional symensional symbol is encoded G by j)=0 item further.
For bitmap layer, generate a most independent jpeg stream the most respectively, corresponding in bitmap region position
Hold and fill with the meansigma methods of neighbouring encoding block color.The distribution of color of all bitmap region on statistics piece image, then will
All colours is quantified as 512 colors.It is mapped as quantifying increment by the mass parameter that bitmap region quantifies.Make QS1..., QSnRepresent
Each quantization increment in n basis colo(u)r specification.When the bitmap region in image being quantified with quantization increment, will make mean square
The QS that difference and bit rate sum minimizekIt is defined as optimum quantization increment size.
For reducing the delay of picture transmission, first the picture image grabbed is divided into multiple block by the present invention, each
Block independently encodes.Send into transmission queue after the bit result packing that coding produces, be then transferred to by UDP channel
AR terminal.AR terminal receives these bags, decodes each block and is shown on screen.When transmitting queue full, compile
Code control module stops screen coding process, until having enough space next one coded frame in transmission queue.Then profit
Reduce unnecessary re-transmission with the transmission method improved, thus reduce transmission delay.
The most still with fixed size, picture image is divided into block to encode, and display screen enters in units of frame
Row decoding.(x, y) (0 < x < W/w, 0 < y < H/h) wherein x, y represents the position of a block in image to construct a frame renewal table U
Put.W and H is width and the height of picture image respectively, w and h is width and the height of a block in image respectively.For n-th
Frame, with S, (x, y n) represent and are wherein positioned at that (x, the content of block y) is the most identical with the block of former frame correspondence position (instant
Move block).If S (x, y, n)=1, then content is identical.When receiving n-th frame data, if (x, y, n)=0 and n is more than S
(x, y), then by being positioned in n-th frame decoded result, (x, block y) copies to the relief area of present frame to U, and (x y) is then to update U
n。
For declining low transmission delay at picture synchronization transmission environment, the present invention uses following methods, if in a certain frame
The data of one non-time shift block have been received and state updates, then before in frame the Data Identification of the block of same position be
Phase, no longer retransmit these data.Specifically, construct the state table of each data block in host side, for each packet, obtain
Data block set in bag, is set to i by the index of each data block in current collection, if the type of current block is not time shift
The numbering of block and place frame is more than i state A in state tablei, then using the numbering of place frame as state Ai.Whenever reception
To the more new information of AR terminal, state table all can be updated.
Receive terminal and all can comprise packet in this time period to sending one state bag of terminal feedback every predetermined period
The relevant information received.If sending terminal do not receive state bag in Preset Time, then judge that current network is as overload；
If present packet loss is less than fixed threshold, then judge that current network is as idle condition；Other situations are judged to normal condition.
If it is determined that network is overload, attenuation quotient λ is used to reduce current bit rate parameter Bx:
Bx=max (λ × Bx, Bmin}(0<λ<1)
If it is determined that network is underload, growth factor θ is used to increase current bit rate parameter Bx:
Bx=min{Bx+ θ, Bmax}(θ<<Bx)
When transmitting terminal is if it is determined that network is to approach overload under normal condition, use attenuation quotient δ adjust by a small margin currently than
Special rate parameter Bx:
Bx=max (Bx-δ, Bmin}(δ<<Bx)
Wherein BmaxAnd BminRepresent minima and the maximum of bit-rate parameters respectively.
If encoder bit rate output reaches the minima set, network is still in overload, then below employing
Method reduces the data volume being transported to network further: work as BxEqual to BminAnd occurrence number is when reaching p time, by complete to I frame and P frame
Portion abandons, and only sends B frame, controls less data volume output.Still transshipping when continuous q (q ＞ p) individual periodic network, sending
End continues to abandon part B frame；Work as BxMore than BminTime, send terminal and send all types of frame of video.Occurring that packet loss reduces
During to normal condition, first transmitting terminal will I frame and P frame all abandon, and continues to judge BxEqual to BminWhether the number of times occurred reaches
To p time, if less than p time, just sending all frames, it is ensured that video Real Time Streaming.
In terms of playing progress rate linking based on Agent, when an AR equipment of a certification user is connected to Agent
Time, the TERMINATION MANAGER of Agent identifies this user and creates a new virtual display example for this equipment, performing picture
The logic of face engine, and safeguard the state in the broadcasting of all of display picture；After equipment is successfully connected, Agent notifies phase
With user every other AR equipment can and this equipment between play out progress and keep consistent.
The linking of picture playing progress rate is reality by the corresponding relation between the virtual display example of change and AR terminal unit
Existing.When AR equipment B send a synchronization request with target AR device A to Agent time, Agent by its playing progress rate with
Target device is mapped, and the picture image drawn out in equipment B is sent to device A, and user's input of device A simultaneously is also sent out
Give equipment B.All of display picture broadcast state is all by virtual display Example maintenance, and this mechanism can keep all of aobvious
Show picture broadcast state；
Described Agent carries out picture playing progress rate linking, under migration model, equipment B's according to pattern set in advance
Playing progress rate is connected device A, and the playing progress rate of device A will be released.In a shared mode, the playing progress rate of equipment B
Device A can be connected, meanwhile, create a new broadcasting example having equal state, the broadcasting that equipment B is original for equipment B
State in progress, is used for building this new example.Under exchange model, the playing progress rate of equipment B and the broadcasting of device A are entered
Degree is exchanged with each other.
In an additional preferred embodiment, for reducing the impact of the pressure of device A and B direct link, the AR of transmitting terminal sets
Standby A carries out Bluetooth transmission with the AR equipment B of receiving terminal by forwarding unit C.Forwarding unit C can include multiple equipment C1…Cn.First
First device A sends handshake and receives data to forwarding unit C, forwarding unit C and calculate number between device A and forwarding unit C
Packet loss and the transmission performance parameter of transfer rate composition according to transmission link；Equipment C sends handshake to equipment B, equipment B
Return data calculates packet loss and the biography of data transmission link between forwarding unit C and equipment B to forwarding unit C, forwarding unit C
The transmission performance parameter of defeated speed composition.Forwarding unit C by between himself calculating speed and device A and with equipment B it
Between the transmission performance parameter device A postbacking sending end sent along.
Forwarding unit C similar for this parameter, according to the transmission performance parameter of alternative forwarding unit C, is divided into one group by device A,
As forwarding unit group.For same forwarding unit C, calculate between device A and forwarding unit C, forwarding unit C and equipment B
Transfer rate, and with the least transmission rate value for reference to being grouped.Basic transmission when device A is transmitted according to it
The forwarding that the transmission performance parameter of data rate and forwarding unit group chooses one group of forwarding performance to meet predefined transmission requirement sets
Standby group, as selected forwarding unit group, i.e. selects transfer rate to pass more than in the alternative forwarding unit group of basic transmitted data rates
Maximum one group of defeated speed is as selected forwarding unit group, and sets up repeated link.
Self image information is captured by device A, by the time when image information captured and crawl and equipment
The parameters such as identification number are encapsulated in transmitting data frame in the lump, and to equipment B and have built up link chain by Bluetooth transmission network
The selected forwarding unit group connect sends same transmission frame number evidence；The selected forwarding unit group established the link with device A and equipment B will
The transmission data received are forwarded to equipment B by Bluetooth transmission network.When equipment B receives device A or selected forwarding unit
Group starts after the data of any one device transmission timing, and waits the data that other equipment transmit.Timing time exceedes pre-
If maximum delay time, equipment B notice not yet transmission data is transferred to the device A corresponding to the link of equipment B or forwarding sets
Standby C abandons the transmission data of time-out；Then the transmission data having been received by are carried out selection combining by equipment B.Equipment B will process
After transmission data carry out screen and show.
When a certain moment is carried out synchronicity detection from the transmission data that device A and equipment C receive, calculate previous moment
The asynchronous number of times of terminal feedback of each road picture transmission information, by itself and the acceptable threshold of the asynchronous number of times of terminal feedback arranged
The not acceptance threshold of the asynchronous number of times of value, terminal feedback compares, and in Ruo Gelu transmission data, minimum terminal feedback is asynchronous
The number of times acceptable thresholds less than the asynchronous number of times of terminal feedback or the not acceptance threshold more than the asynchronous number of times of terminal feedback,
Then select the video data that road transmission data are equipment B that the asynchronous number of times of terminal feedback is minimum.In Ruo Gelu transmission data
Minimum asynchronous number of times is not between the acceptable thresholds of the asynchronous number of times of terminal feedback and accepting of the asynchronous number of times of terminal feedback
Between threshold value, then the display number that transmission data are equipment B that in the transmission data that selected equipment B receives, occurrence number is most
According to, if there are the transmission data that occurrence number is identical, then choose transmission data that wherein the asynchronous number of times of terminal feedback is low for setting
The video data of standby B.
In sum, the present invention proposes the method for a kind of Bluetooth control display content synchronization, reduces the direct chain of AR equipment
The pressure on road to video smoothness influential effect.
Obviously, it should be appreciated by those skilled in the art, each module of the above-mentioned present invention or each step can be with general
Calculating system realize, they can concentrate in single calculating system, or be distributed in multiple calculating system and formed
Network on, alternatively, they can realize with the executable program code of calculating system, it is thus possible to by they store
Performed by calculating system within the storage system.So, the present invention is not restricted to the combination of any specific hardware and software.
It should be appreciated that the above-mentioned detailed description of the invention of the present invention is used only for exemplary illustration or explains the present invention's
Principle, and be not construed as limiting the invention.Therefore, that is done in the case of without departing from the spirit and scope of the present invention is any
Amendment, equivalent, improvement etc., should be included within the scope of the present invention.Additionally, claims purport of the present invention
Whole within containing the equivalents falling into scope and border or this scope and border change and repair
Change example.
Claims (2)
1. a method for Bluetooth control display content synchronization, for carrying out picture synchronization transmission and showing in multiple AR equipment
Show, it is characterised in that including:
The AR device A of transmitting terminal is set up Bluetooth transmission network with one group of forwarding unit C respectively with the AR equipment B of receiving terminal and is connected,
Select forwarding unit according to the transmission performance parameter between device A, B and each forwarding unit, carry out screen-picture to equipment B
Forward.
Method the most according to claim 1, it is characterised in that described forwarding unit C includes multiple equipment C1…Cn, described
Method also includes:
Device A sends handshake and receives data to forwarding unit C, forwarding unit C and calculate between device A and forwarding unit C
The packet loss of data transmission link and the transmission performance parameter of transfer rate composition；Equipment C send handshake to equipment B, if
Standby B return data calculates the packet loss of data transmission link between forwarding unit C and equipment B to forwarding unit C, forwarding unit C
Transmission performance parameter with transfer rate composition；Forwarding unit C by between himself calculating speed and device A and with set
The transmission performance parameter device A postbacking sending end sent along between standby B；
Forwarding unit C similar for this parameter, according to the transmission performance parameter of alternative forwarding unit C, is divided into one group by device A, as
Forwarding unit group；For same forwarding unit C, calculate the biography between device A and forwarding unit C, forwarding unit C and equipment B
Defeated speed, and with the least transmission rate value for reference to being grouped；Substantially data are transmitted when device A is transmitted according to it
The transmission performance parameter of speed and forwarding unit group chooses one group of forwarding performance to meet the forwarding unit group of predefined transmission requirement
As selected forwarding unit group, i.e. select transfer rate more than transmission speed in the alternative forwarding unit group of basic transmitted data rates
Maximum one group of rate is as selected forwarding unit group, and sets up repeated link；
Self image information is captured by device A, by the time when image information captured and crawl and device identification
Number etc. parameter be encapsulated in the lump in transmitting data frame, and by Bluetooth transmission network to equipment B and have built up link link
Selected forwarding unit group sends same transmission frame number evidence；The selected forwarding unit group established the link with device A and equipment B will receive
Transmission data by Bluetooth transmission network to equipment B forward；In equipment B receives device A or selected forwarding unit group
Start timing after the data of any one device transmission, and wait the data that other equipment transmit；Timing time exceedes default
During maximum delay, equipment B notice not yet transmission data is transferred to the device A corresponding to the link of equipment B or forwarding unit C loses
Abandon the transmission data of time-out；Then the transmission data having been received by are carried out selection combining by equipment B；After equipment B will process
Transmission data carry out screen and show；
When a certain moment is carried out synchronicity detection from the transmission data that device A and equipment C receive, calculate each road of previous moment
The asynchronous number of times of terminal feedback of picture transmission information, by its with arrange the asynchronous number of times of terminal feedback acceptable thresholds,
The not acceptance threshold of the asynchronous number of times of terminal feedback compares, and in Ruo Gelu transmission data, minimum terminal feeds back asynchronous number of times
Acceptable thresholds less than the asynchronous number of times of terminal feedback or the not acceptance threshold more than the asynchronous number of times of terminal feedback, then select
Select the video data that road transmission data are equipment B that the asynchronous number of times of terminal feedback is minimum；Minimum in Ruo Gelu transmission data
Asynchronous number of times is between the acceptable thresholds of the asynchronous number of times of terminal feedback and the not acceptance threshold of the asynchronous number of times of terminal feedback
Between, then the video data that transmission data are equipment B that in the transmission data that selected equipment B receives, occurrence number is most, if
There are the transmission data that occurrence number is identical, then choosing the transmission data that wherein the asynchronous number of times of terminal feedback is low is equipment B's
Video data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610789956.3A CN106331426A (en) | 2016-08-31 | 2016-08-31 | Method for controlling display content synchronization by Bluetooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610789956.3A CN106331426A (en) | 2016-08-31 | 2016-08-31 | Method for controlling display content synchronization by Bluetooth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106331426A true CN106331426A (en) | 2017-01-11 |
Family
ID=57789165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610789956.3A Pending CN106331426A (en) | 2016-08-31 | 2016-08-31 | Method for controlling display content synchronization by Bluetooth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106331426A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114356272A (en) * | 2022-03-17 | 2022-04-15 | 荣耀终端有限公司 | Data transmission method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102334335A (en) * | 2009-12-25 | 2012-01-25 | 株式会社理光 | Transmission management system, transmission system, computer program product, program providing system, and maintenance system |
| CN102710778A (en) * | 2012-06-05 | 2012-10-03 | 山东大学 | Collaboration wireless display system and working method thereof |
| CN102883135A (en) * | 2012-11-01 | 2013-01-16 | 成都飞视美视频技术有限公司 | Screen sharing and control method thereof |
| CN104038318A (en) * | 2014-06-26 | 2014-09-10 | 重庆邮电大学 | Deep space file transmission method based on relaying selection |
| CN104184739A (en) * | 2014-09-01 | 2014-12-03 | 陈小鹏 | Class synchronization system based on wireless network |
-
2016
- 2016-08-31 CN CN201610789956.3A patent/CN106331426A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102334335A (en) * | 2009-12-25 | 2012-01-25 | 株式会社理光 | Transmission management system, transmission system, computer program product, program providing system, and maintenance system |
| CN102710778A (en) * | 2012-06-05 | 2012-10-03 | 山东大学 | Collaboration wireless display system and working method thereof |
| CN102883135A (en) * | 2012-11-01 | 2013-01-16 | 成都飞视美视频技术有限公司 | Screen sharing and control method thereof |
| CN104038318A (en) * | 2014-06-26 | 2014-09-10 | 重庆邮电大学 | Deep space file transmission method based on relaying selection |
| CN104184739A (en) * | 2014-09-01 | 2014-12-03 | 陈小鹏 | Class synchronization system based on wireless network |
Non-Patent Citations (1)
| Title |
|---|
| 许宏吉 等: "协作上下文感知下无线传屏数据不一致性消除", 《天津大学学报(自然科学与工程技术版)》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114356272A (en) * | 2022-03-17 | 2022-04-15 | 荣耀终端有限公司 | Data transmission method and system |
| CN114356272B (en) * | 2022-03-17 | 2022-08-23 | 北京荣耀终端有限公司 | Data transmission method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106210443B (en) | The method that network-control shows content synchronization | |
| CN1669233B (en) | Video compression system | |
| CN101984661B (en) | Information transmission method of video conference system and video conference system | |
| CN102204257B (en) | Low latency video encoder | |
| CN101606390B (en) | Method, decoding method and decoding device of fast channel change on a bandwidth constrained network | |
| US11044437B2 (en) | Method and system for combining multiple area-of-interest video codestreams into a combined video codestream | |
| CN104604203B (en) | Adjusting of the coding in image after scene change and emission parameter | |
| CN101835043B (en) | Adaptive bandwidth desktop sharing method based on block encoding | |
| CN103905741A (en) | Ultra-high-definition panoramic video real-time generation and multi-channel synchronous play system | |
| CN101707714B (en) | Image processing method and device of multi-picture video session | |
| CN105191312B (en) | Resource for being encoded to vision signal | |
| CN102137258B (en) | Method for controlling three-dimensional video code rates | |
| JP2003244676A5 (en) | Video distribution system, video distribution apparatus and method, and program | |
| CN101640784A (en) | Device and method for controlling multi-image compounding in video conference system | |
| CN101494547A (en) | Method and system for implementing conference combining local conference and network conference equipment | |
| CN106993190B (en) | Software-hardware synergism coding method and system | |
| CN103716648A (en) | Information transmission method for remote teaching system and remote teaching system | |
| CN105025347B (en) | A kind of method of sending and receiving of GOP images group | |
| CN104247407A (en) | Data, multimedia & video transmission updating system | |
| CN106303611A (en) | A kind of method and system realizing film source propelling movement | |
| CN101137060B (en) | Video transmission method, system and equipment | |
| CN106303650A (en) | Audio video synchronization display packing | |
| US20120281756A1 (en) | Complexity change detection for video transmission system | |
| CN102164281A (en) | Method for controlling video code rate based on vision significance model | |
| US20120281757A1 (en) | Scene change detection for video transmission system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170111 |