CN104994153B - A kind of image transfer method and system of WIFI DISPLAY - Google Patents
A kind of image transfer method and system of WIFI DISPLAY Download PDFInfo
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- CN104994153B CN104994153B CN201510373576.7A CN201510373576A CN104994153B CN 104994153 B CN104994153 B CN 104994153B CN 201510373576 A CN201510373576 A CN 201510373576A CN 104994153 B CN104994153 B CN 104994153B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43637—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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Abstract
The invention discloses a kind of image transfer methods and system of WIFI DISPLAY, are connect by the way that first terminal is established WIFI DISPLAY with second terminal；Judge that the current frame image data that first terminal refreshes display are whole screen refreshing or Local hydrodynamic unit；Refresh if whole screen, then current frame image data is sent to second terminal and corresponding display；If Local hydrodynamic unit, then current frame image data and previous frame image data are compared, there to be the corresponding local area image data of the newer regional area of display to be sent to second terminal in current frame image data compared with previous frame image data, the previous frame image data and the local area image data that second terminal is sent according to first terminal obtain current frame image data and corresponding display；Achieve the purpose that reduce transmitted data amount, has improved efficiency of transmission.
Description
Technical field
The present invention relates to WIFI DISPLAY technical fields more particularly to a kind of image transmittings of WIFI DISPLAY
Method and system.
Background technology
With the continuous development of mobile terminal technology, the use of the mobile terminals such as mobile phone is more and more universal.WIFI
DISPLAY refers to that mobile phone, mobile PC, TV and display will be carried out being wirelessly connected.The standard is joined by WiFi wireless industries
Alliance formulates, and can for example compress 3D videos to be transmitted by Wi-Fi.3D videos consume bandwidth very much, will be sluggish if do not compressed,
Wi-Fi Display technologies can will drop to 1 percent milliseconds or less delay time.
WIFI DISPLAY have been a more mature technologies, and the image that it can be such that mobile terminal is shown transmits
It is shown to another mobile terminal.In the prior art, first movement terminal needs the whole screen image data transfer shown
To the second mobile terminal, the image that can just make the second mobile terminal show that first movement terminal is currently shown.However it is existing
WIFI DISPLAY transmitted data amounts are larger, and efficiency of transmission is not high, and inconvenience is brought to user.
Therefore, the existing technology needs to be improved and developed.
Invention content
The technical problem to be solved in the present invention is, provides a kind of image transfer method and system of WIFI DISPLAY,
Aim to solve the problem that big, the inefficient problem of existing WIFI DISPLAY transmitted data amounts.
The technical proposal for solving the technical problem of the invention is as follows：
A kind of image transfer method of WIFI DISPLAY, wherein including：
A, first terminal WIFI DISPLAY are established with second terminal to connect；
B, judge that the current frame image data that first terminal refreshes display are whole screen refreshing or Local hydrodynamic unit；If whole screen brush
Newly, C is thened follow the steps；If Local hydrodynamic unit, D is thened follow the steps；
C, current frame image data are sent to second terminal and corresponding display；
D, current frame image data and previous frame image data are compared, by current frame image data with previous frame
Image data, which is compared, has the corresponding local area image data of the newer regional area of display to be sent to second terminal, second terminal
The previous frame image data and the local area image data sent according to first terminal obtains current frame image data simultaneously
Corresponding display.
The image transfer method of the WIFI DISPLAY, wherein the step B is specifically included：
B1, judge that the current frame image data that first terminal refreshes display are whole screen refreshing or Local hydrodynamic unit；If whole screen
Refresh, then it is First Kind Graph picture to mark current frame image data, and executes step C；If Local hydrodynamic unit, then present frame figure is marked
Picture data are the second class image, and execute step D.
The image transfer method of the WIFI DISPLAY, wherein the first terminal is sent to the one of second terminal
Frame image data includes：It is the frame head of beginning for identifying current frame image data, to be passed to contain current frame image data
The frame packet of defeated image data and for identify work as current frame image data end postamble；
The frame packet includes：For identify image class that current frame image data are First Kind Graph picture or the second class image and
Image data packet to be transmitted in current frame image data.
The image transfer method of the WIFI DISPLAY, wherein the step C is specifically included：
C1, when current frame image data be First Kind Graph as when, current frame image data that the whole screen of first terminal is shown
It is sent to second terminal；The current frame image data include：Corresponding frame head, frame packet and postamble；The frame packet includes being used for
Identify the picture number of all images data in the image class and current frame image data that current frame image data are First Kind Graph picture
According to packet；
C2, second terminal identify the corresponding image class of the current frame image data, and show that first terminal sends should
Frame image data is First Kind Graph picture；
The whole screen of C3, second terminal shows the current frame image data that first terminal is sent.
The image transfer method of the WIFI DISPLAY, wherein the step D is specifically included：
D1, when current frame image data are the second class image, by current frame image data and previous frame image data into
Row comparison, find out has the newer multiple regional areas of display compared with previous frame image data in current frame image data；
D2, the corresponding regional location of each regional area of acquisition and region image data obtain corresponding local area image
Data, and it is sent to second terminal；The local area image data include：Corresponding frame head, frame packet and postamble；The frame packet
Include having display newer for identifying in the image class and current frame image data that current frame image data are the second class image
The image data packet of regional location and region image data；
D3, second terminal identify the corresponding image class of the local area image data, obtain what first terminal was sent
The frame image data is the second class image, obtains corresponding regional location and region image data；
Region image data correspondence is filled into previous frame image data by D4, second terminal according to regional location, is obtained
The current frame image data that first terminal Local hydrodynamic unit is shown, and correspondence is shown in second terminal.
A kind of image delivering system of WIFI DISPLAY, wherein including：
Connection establishment module is connect for first terminal to be established WIFI DISPLAY with second terminal；
Image judgment module, for judging that the current frame image data that first terminal refreshes display are whole screen refreshing or part
Refresh；Refresh if whole screen, then triggers whole screen display module；If Local hydrodynamic unit, then local display module is triggered；
Whole screen display module, for current frame image data to be sent to second terminal and corresponding display；
Local display module, for comparing current frame image data and previous frame image data, by present frame figure
As there is the corresponding local area image data of the newer regional area of display to be sent in data compared with previous frame image data
Second terminal, the previous frame image data and the local area image data that second terminal is sent according to first terminal obtain
Current frame image data and corresponding display.
The image delivering system of the WIFI DISPLAY, wherein described image judgment module includes：
Image tagged unit, when the current frame image data for refreshing display when first terminal are that whole screen refreshes, label
Current frame image data are First Kind Graph picture；When the current frame image data that first terminal refreshes display are Local hydrodynamic unit, mark
Note current frame image data are the second class image.
The image delivering system of the WIFI DISPLAY, wherein the first terminal is sent to the one of second terminal
Frame image data includes：It is the frame head of beginning for identifying current frame image data, to be passed to contain current frame image data
The frame packet of defeated image data and for identify work as current frame image data end postamble；
The frame packet includes：For identify image class that current frame image data are First Kind Graph picture or the second class image and
Image data packet to be transmitted in current frame image data.
The image delivering system of the WIFI DISPLAY, wherein the whole screen display module includes：
Whole screen transmission unit, for when current frame image data be First Kind Graph as when, the whole screen of first terminal is shown
Current frame image data are sent to second terminal；The current frame image data include：Corresponding frame head, frame packet and postamble；Institute
It includes all scheming for identifying in the image class and current frame image data that current frame image data are First Kind Graph picture to state frame packet
As the image data packet of data；
Whole screen recognition unit, the corresponding image class of the current frame image data, show that first terminal is sent for identification
The frame image data come is First Kind Graph picture；
Whole screen display unit, the current frame image data sent for showing first terminal.
The image delivering system of the WIFI DISPLAY, wherein the local display module includes：
Local contrast unit, for when current frame image data be the second class image when, by current frame image data with it is upper
One frame image data is compared, and find out in current frame image data has display newer multiple compared with previous frame image data
Regional area；
Local transmission unit is corresponded to for obtaining the corresponding regional location of each regional area and region image data
Local area image data, and be sent to second terminal；The local area image data include：Corresponding frame head, frame packet
And postamble；The frame packet includes for identifying the image class and current frame image data that current frame image data are the second class image
In have the image data packet for showing newer regional location and region image data；
Local recognition unit, the corresponding image class of the local area image data, show that first terminal is sent out for identification
The frame image data sent is the second class image, obtains corresponding regional location and region image data；
Local display unit, for region image data correspondence to be filled into previous frame image data according to regional location
In, the current frame image data that first terminal Local hydrodynamic unit is shown are obtained, and correspondence is shown in second terminal.
The image transfer method and system of a kind of WIFI DISPLAY provided by the present invention, efficiently solves existing
Big, the inefficient problem of WIFI DISPLAY transmitted data amounts, by the way that first terminal and second terminal are established WIFI
DISPLAY connections；Judge that the current frame image data that first terminal refreshes display are whole screen refreshing or Local hydrodynamic unit；If whole screen
Refresh, then current frame image data is sent to second terminal and corresponding display；If Local hydrodynamic unit, then by current frame image number
It is compared according to previous frame image data, will have display newer in current frame image data compared with previous frame image data
The corresponding local area image data of regional area are sent to second terminal, second terminal sent according to first terminal upper one
Frame image data and the local area image data obtain current frame image data and corresponding display；Using WIFI
When DISPLAY transmits image data, the region that image changes only is transmitted, to achieve the purpose that reduce transmitted data amount,
Efficiency of transmission is improved, brings to user and greatly facilitates.
Description of the drawings
Fig. 1 is the flow chart of the image transfer method preferred embodiment of WIFI DISPLAY provided by the invention.
Regional area schematic diagram in the image transfer method that Fig. 2 is WIFI DISPLAY provided by the invention.
Fig. 3 is the structure diagram of the image delivering system preferred embodiment of WIFI DISPLAY provided by the invention.
Specific implementation mode
The present invention provides a kind of image transfer method and system of WIFI DISPLAY, to make the purpose of the present invention, technology
Scheme and advantage are clearer, clear, and the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.It should manage
Solution, the specific embodiments described herein are merely illustrative of the present invention, is not intended to limit the present invention.
Referring to Fig. 1, Fig. 1 is the flow of the image transfer method preferred embodiment of WIFI DISPLAY provided by the invention
Figure, as shown, the described method comprises the following steps：
Step S100, first terminal WIFI DISPLAY are established with second terminal to connect；
Step S200, judge that the current frame image data that first terminal refreshes display are whole screen refreshing or Local hydrodynamic unit；If
Refresh for whole screen, thens follow the steps S300；If Local hydrodynamic unit, S400 is thened follow the steps；
Step S300, current frame image data are sent to second terminal and corresponding display；
Step S400, current frame image data and previous frame image data are compared, it will be in current frame image data
There are the corresponding local area image data of the newer regional area of display to be sent to second terminal compared with previous frame image data,
The previous frame image data and the local area image data that second terminal is sent according to first terminal obtain present frame figure
As data and corresponding display.
Above-mentioned steps are described in detail with reference to specific embodiment.
The first terminal and second terminal can be mobile terminals or the smart televisions such as mobile phone, tablet computer and show
Show the equipment such as device.In the step s 100, first terminal WIFI DISPLAY are established with second terminal to connect.Specifically,
One terminal and second terminal are the terminals for having WIFI DISPLAY functions, for example mobile phone, tablet computer etc..WIFI DISPLAY
Connection is the prior art, does not do excessive description herein.
In step s 200, judge that the current frame image data that first terminal refreshes display are that whole screen refreshes or part is brushed
Newly；Refresh if whole screen, thens follow the steps S300；If Local hydrodynamic unit, S400 is thened follow the steps.Specifically, judge first
The current frame image data that terminal refreshes display are whole screen refreshing or Local hydrodynamic unit；Refresh if whole screen, then marks present frame figure
Picture data are First Kind Graph picture, and execute step S300；If Local hydrodynamic unit, then it is the second class figure to mark current frame image data
Picture, and execute step S400.
In practical application, the First Kind Graph described in the present invention seem refer to its transmission when need by the image of the whole screen of terminal into
Row transmission, and when the second class image refers to its transmission, only needs the image by certain some regional area on terminal screen to pass
It is defeated.As for which be First Kind Graph picture, which be the second class imageDetermine that a frame image is First Kind Graph picture or the second class
Image, it is specific as follows：Refreshed by whole screen when terminal, which is shown, to be refreshed, then this frame image is First Kind Graph picture；When
Terminal display is to refresh some regional areas when refreshing, then this frame is the second class image.
In step S300, current frame image data are sent to second terminal and corresponding display.That is, when current
Frame image data is that whole screen refreshes, this illustrates the widely different of current frame image data and previous frame image data, then according to
Current frame image data are sent to second terminal and corresponding display by existing data transfer mode.
In step S400, current frame image data and previous frame image data are compared, by current frame image number
There are the corresponding local area image data of the newer regional area of display to be sent to second compared with previous frame image data in
Terminal, the previous frame image data and the local area image data that second terminal is sent according to first terminal obtain currently
Frame image data and corresponding display.
Specifically, when current frame image data are Local hydrodynamic units, this illustrates current frame image data and previous frame figure
As the difference of data is smaller, then current frame image data and previous frame image data is compared, find out current frame image number
There is the newer regional area of display compared with previous frame image data in, then by the corresponding local area image of regional area
Data are sent to second terminal.Then the previous frame image data and the partial zones that second terminal is sent according to first terminal
Area image data can obtain the current frame image data shown on first terminal, finally corresponding display.
Since video image is all gradual change, generally entirely display image screen will not change, the present invention is using in this way
Transmission mode, only need to transmit some images and have the local image region of change, to achieve the purpose that reduce transmission data, to
Improve efficiency.
In practical application, the frame image data that the first terminal is sent to second terminal includes：Work as identifying
The frame head of the beginning of prior image frame data, to contain the frame packet of current frame image data image data to be transmitted and for marking
Know the postamble when the end of current frame image data；The frame packet includes：It is First Kind Graph for identifying current frame image data
Image data packet to be transmitted in the image class and current frame image data of picture or the second class image.
Specifically, when one frame image of terminal transmission, format is made of following three parts, including：Frame head, frame packet and
Postamble.Frame head is used to identify the beginning of a frame image；Frame packet is the data of a frame image transmitting；Postamble is used to mark
Know the end of a frame image；Wherein, the format of frame packet is specific as follows, including：Image class and image data packet, wherein image class,
It is First Kind Graph picture or the second class image for identifying this frame image；And image data packet, the specific image being used for transmission
Data, when image class be First Kind Graph as when, image data packet is the whole screen image that currently shows of terminal；When image class is second
When class image, image data packet is that this current frame image shows newer region compared with previous frame image.
Further, the step S300 is specifically included：
S310, when current frame image data be First Kind Graph as when, current frame image number that the whole screen of first terminal is shown
According to being sent to second terminal；The current frame image data include：Corresponding frame head, frame packet and postamble；The frame packet includes using
The image of all images data in the image class and current frame image data that mark current frame image data are First Kind Graph picture
Data packet；
S320, second terminal identify the corresponding image class of the current frame image data, obtain what first terminal was sent
The frame image data is First Kind Graph picture；
The whole screen of S330, second terminal shows the current frame image data that first terminal is sent.
Specifically, when the current frame image data of first terminal be First Kind Graph as when, then be sent to second terminal
A frame image data in, indicate the corresponding frame head of current frame image data, frame packet and postamble；The frame packet includes for identifying
Current frame image data are the image class of First Kind Graph picture and the image data packet of all images data in current frame image data.
Then, second terminal is when receiving the frame image that first terminal transmits, getting frame packet, then according to figure
As class knows that this frame image data is First Kind Graph picture or the second class image；If it is First Kind Graph picture, pressing will be in frame packet
Image data be first terminal whole screen image, directly displayed out.
Further, the step S400 is specifically included：
S410, when current frame image data be the second class image when, by current frame image data and previous frame image data
It is compared, find out has the newer multiple regional areas of display compared with previous frame image data in current frame image data；
S420, the corresponding regional location of each regional area of acquisition and region image data obtain corresponding regional area figure
As data, and it is sent to second terminal；The local area image data include：Corresponding frame head, frame packet and postamble；The frame
Packet includes having display to update for identifying in the image class and current frame image data that current frame image data are the second class image
Regional location and region image data image data packet；
S430, second terminal identify the corresponding image class of the local area image data, show that first terminal is sent
The frame image data be the second class image, obtain corresponding regional location and region image data；
Region image data correspondence is filled into previous frame image data by S440, second terminal according to regional location, is obtained
The current frame image data shown to first terminal Local hydrodynamic unit, and correspondence is shown in second terminal.
Specifically, when the current frame image data of first terminal are the second class image, then by current frame image data
It is compared with previous frame image data, find out in current frame image data has display newer compared with previous frame image data
Multiple regional areas.Then this current frame image is shown into the corresponding image data in newer region compared with previous frame image
It is sent to second terminal.Second terminal identifies that the corresponding image class of the local area image data is the second class image, then obtains
Regional location is taken, then corresponding region image data is shown in the corresponding regional location of previous frame image data, due to
The regional area that image changes when practical application has multiple, and the filling of the region image data of each regional area is being finished it
Afterwards, second terminal can obtain the current frame image data that corresponding first terminal Local hydrodynamic unit is shown, finally corresponding display.This
Sample, only need to transmit some images has the local image region of change, has achieved the purpose that reduce transmission data, to improve effect
Rate.
In practical application, assuming there is the regional area that N number of image changes, the frame in the local area image data
Packet includes：The image data of the position and region 1 in region 1；The image data of the position and region 2 in region 2；The position in region 3
With the image data in region 3；... the image data of the position and region N of region N.N is positive integer.Wherein, region x（x=1、
2、3……N）Position, indicated by two coordinate points, as shown in Fig. 2, as a regional location by coordinate (xe1, ye1),
(xe2, ye2) is determined, meets the coordinate of xe1≤x≤xe2 and ye1≤y≤ye2（x,y）It is respectively positioned in the region.It needs exist for
Illustratively, because no matter x is how many in " image data of the position and region x of region x ", shared by " position of region x "
Data length is identical, such as a regional location is by coordinate（23,9）、（34,18）It determines, and the display screen of first terminal
Resolution ratio is 800*600, then the coordinate of this regional location will be expressed as（023,009）、（034,018）So that each region
The length all same of the expression of position；Then the size of the regional location is assured that according to regional location, if regional location
It being determined by coordinate (xe1, ye1), (xe2, ye2), then the size of regional location is (xe2-xe1+1) * (ye2-ye1+1), to
It is " the image of region x to know after " position of region x " that length is the data of (xe2-xe1+1) * (ye2-ye1+1) * pdata
Data ", wherein pdata are the length of the image data of a pixel, and the image data length of each pixel is also identical.
Here it is the determination illustrated about regional area, current frame image data have compared with previous frame image data
Show newer regional area, usually irregular, it includes the corresponding minimum rectangular area of the regional area that can use.Certainly
The regional area that image changes directly can be just taken, it is a little complicated to calculate meeting in this way.
Based on the image transfer method of above-mentioned WIFI DISPLAY, the present invention also provides a kind of figures of WIFI DISPLAY
Image transmission system, as shown in figure 3, the system comprises：
Connection establishment module 10 is connect for first terminal to be established WIFI DISPLAY with second terminal；It is specific such as to walk
Described in rapid S100；
Image judgment module 20, for judging that the current frame image data that first terminal refreshes display are whole screen refreshing or office
Portion is refreshed；Refresh if whole screen, then triggers whole screen display module；If Local hydrodynamic unit, then local display module is triggered；Specifically such as
Described in step S200；
Whole screen display module 30, for current frame image data to be sent to second terminal and corresponding display；It is specific such as to walk
Described in rapid S300；
Local display module 40, for comparing current frame image data and previous frame image data, by present frame
There are the corresponding local area image data of the newer regional area of display to send compared with previous frame image data in image data
To second terminal, previous frame image data and the local area image data that second terminal is sent according to first terminal obtain
To current frame image data and corresponding display；Specifically as described in step S400.
Further, described image judgment module 20 includes：
Image tagged unit, when the current frame image data for refreshing display when first terminal are that whole screen refreshes, label
Current frame image data are First Kind Graph picture；When the current frame image data that first terminal refreshes display are Local hydrodynamic unit, mark
Note current frame image data are the second class image.
Further, the frame image data that the first terminal is sent to second terminal includes：For identifying present frame
The frame head of the beginning of image data is worked as to contain the frame packet of current frame image data image data to be transmitted and for identifying
The postamble of the end of current frame image data；
The frame packet includes：For identify image class that current frame image data are First Kind Graph picture or the second class image and
Image data packet to be transmitted in current frame image data.
Further, the whole screen display module 30 includes：
Whole screen transmission unit, for when current frame image data be First Kind Graph as when, the whole screen of first terminal is shown
Current frame image data are sent to second terminal；The current frame image data include：Corresponding frame head, frame packet and postamble；Institute
It includes all scheming for identifying in the image class and current frame image data that current frame image data are First Kind Graph picture to state frame packet
As the image data packet of data；
Whole screen recognition unit, the corresponding image class of the current frame image data, show that first terminal is sent for identification
The frame image data come is First Kind Graph picture；
Whole screen display unit, the current frame image data sent for showing first terminal.
Further, the local display module 40 includes：
Local contrast unit, for when current frame image data be the second class image when, by current frame image data with it is upper
One frame image data is compared, and find out in current frame image data has display newer multiple compared with previous frame image data
Regional area；
Local transmission unit is corresponded to for obtaining the corresponding regional location of each regional area and region image data
Local area image data, and be sent to second terminal；The local area image data include：Corresponding frame head, frame packet
And postamble；The frame packet includes for identifying the image class and current frame image data that current frame image data are the second class image
In have the image data packet for showing newer regional location and region image data；
Local recognition unit, the corresponding image class of the local area image data, show that first terminal is sent out for identification
The frame image data sent is the second class image, obtains corresponding regional location and region image data；
Local display unit, for region image data correspondence to be filled into previous frame image data according to regional location
In, the current frame image data that first terminal Local hydrodynamic unit is shown are obtained, and correspondence is shown in second terminal.
In conclusion the image transfer method and system of a kind of WIFI DISPLAY provided by the invention, by by first
Terminal is established WIFI DISPLAY with second terminal and is connect；Judge that the current frame image data that first terminal refreshes display are whole screens
Refreshing or Local hydrodynamic unit；Refresh if whole screen, then current frame image data is sent to second terminal and corresponding display；If office
Portion refresh, then current frame image data and previous frame image data are compared, by current frame image data with previous frame
Image data, which is compared, has the corresponding local area image data of the newer regional area of display to be sent to second terminal, second terminal
The previous frame image data and the local area image data sent according to first terminal obtains current frame image data simultaneously
Corresponding display；When transmitting image data using WIFI DISPLAY, only transmit what image changed if image change is smaller
Region improves efficiency of transmission, brings to user and greatly facilitate to achieve the purpose that reduce transmitted data amount.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect range.
Claims (8)
1. a kind of image transfer method of WIFI DISPLAY, which is characterized in that including：
A, first terminal WIFI DISPLAY are established with second terminal to connect；
B, judge that the current frame image data that first terminal refreshes display are whole screen refreshing or Local hydrodynamic unit；Refresh if whole screen,
Then follow the steps C；If Local hydrodynamic unit, D is thened follow the steps；
C, current frame image data are sent to second terminal and corresponding display；
D, current frame image data and previous frame image data are compared, by current frame image data with previous frame image
Data compared to there is the corresponding local area image data of the newer regional area of display to be sent to second terminal, second terminal according to
The previous frame image data and the local area image data that first terminal is sent obtain current frame image data and correspondence
Display；
The step B is specifically included：
B1, judge that the current frame image data that first terminal refreshes display are whole screen refreshing or Local hydrodynamic unit；Refresh if whole screen,
It is First Kind Graph picture then to mark current frame image data, and executes step C；If Local hydrodynamic unit, then current frame image number is marked
According to for the second class image, and execute step D；
Refreshed by whole screen when terminal, which is shown, to be refreshed, then current frame image is First Kind Graph picture；It is brushed when terminal is shown
It is to refresh some regional areas when new, then present frame is the second class image.
2. the image transfer method of WIFI DISPLAY according to claim 1, which is characterized in that the first terminal hair
The frame image data for giving second terminal includes：The frame head of beginning for identifying current frame image data, to contain working as
The postamble of the frame packet of prior image frame data image data to be transmitted and the end for identifying current frame image data；
The frame packet includes：For identifying image class that current frame image data are First Kind Graph picture or the second class image and current
Image data packet to be transmitted in frame image data.
3. the image transfer method of WIFI DISPLAY according to claim 2, which is characterized in that the step C is specific
Including：
C1, when current frame image data be First Kind Graph as when, current frame image data transmission that first terminal whole screen show
To second terminal；The current frame image data include：Corresponding frame head, frame packet and postamble；The frame packet includes for identifying
Current frame image data are the image class of First Kind Graph picture and the image data packet of all images data in current frame image data；
C2, second terminal identify the corresponding image class of the current frame image data, obtain the frame figure that first terminal is sent
As data are First Kind Graph picture；
The whole screen of C3, second terminal shows the current frame image data that first terminal is sent.
4. the image transfer method of WIFI DISPLAY according to claim 2, which is characterized in that the step D is specific
Including：
D1, when current frame image data are the second class image, current frame image data and previous frame image data are carried out pair
Than find out has the newer multiple regional areas of display compared with previous frame image data in current frame image data；
D2, the corresponding regional location of each regional area of acquisition and region image data obtain corresponding local area image number
According to, and it is sent to second terminal；The local area image data include：Corresponding frame head, frame packet and postamble；The frame packet
Include has the newer area of display for identifying in the image class and current frame image data that current frame image data are the second class image
The image data packet of domain position and region image data；
D3, second terminal identify the corresponding image class of the local area image data, obtain the frame that first terminal is sent
Image data is the second class image, obtains corresponding regional location and region image data；
Region image data correspondence is filled into previous frame image data by D4, second terminal according to regional location, obtains first
The current frame image data that terminal Local hydrodynamic unit is shown, and correspondence is shown in second terminal.
5. a kind of image delivering system of WIFI DISPLAY, which is characterized in that including：
Connection establishment module is connect for first terminal to be established WIFI DISPLAY with second terminal；
Image judgment module, for judging that the current frame image data that first terminal refreshes display are that whole screen refreshes or part is brushed
Newly；Refresh if whole screen, then triggers whole screen display module；If Local hydrodynamic unit, then local display module is triggered；
Whole screen display module, for current frame image data to be sent to second terminal and corresponding display；
Local display module, for comparing current frame image data and previous frame image data, by current frame image number
There are the corresponding local area image data of the newer regional area of display to be sent to second compared with previous frame image data in
Terminal, the previous frame image data and the local area image data that second terminal is sent according to first terminal obtain currently
Frame image data and corresponding display；
Described image judgment module includes：
Image tagged unit, when the current frame image data for refreshing display when first terminal are that whole screen refreshes, label is current
Frame image data is First Kind Graph picture；When the current frame image data that first terminal refreshes display are Local hydrodynamic unit, label is worked as
Prior image frame data are the second class image；
Refreshed by whole screen when terminal, which is shown, to be refreshed, then current frame image is First Kind Graph picture；It is brushed when terminal is shown
It is to refresh some regional areas when new, then present frame is the second class image.
6. the image delivering system of WIFI DISPLAY according to claim 5, which is characterized in that the first terminal hair
The frame image data for giving second terminal includes：The frame head of beginning for identifying current frame image data, to contain working as
The postamble of the frame packet of prior image frame data image data to be transmitted and the end for identifying current frame image data；
The frame packet includes：For identifying image class that current frame image data are First Kind Graph picture or the second class image and current
Image data packet to be transmitted in frame image data.
7. the image delivering system of WIFI DISPLAY according to claim 6, which is characterized in that the whole screen shows mould
Block includes：
Whole screen transmission unit, for when current frame image data be First Kind Graph as when, the whole screen of first terminal is shown current
Frame image data is sent to second terminal；The current frame image data include：Corresponding frame head, frame packet and postamble；The frame
Packet includes for identifying all images number in the image class and current frame image data that current frame image data are First Kind Graph picture
According to image data packet；
Whole screen recognition unit, the corresponding image class of the current frame image data, obtains what first terminal was sent for identification
The frame image data is First Kind Graph picture；
Whole screen display unit, the current frame image data sent for showing first terminal.
8. the image delivering system of WIFI DISPLAY according to claim 6, which is characterized in that the local display mould
Block includes：
Local contrast unit is used for when current frame image data are the second class image, by current frame image data and previous frame
Image data is compared, and find out has the newer multiple parts of display compared with previous frame image data in current frame image data
Region；
Local transmission unit obtains corresponding office for obtaining the corresponding regional location of each regional area and region image data
Portion's region image data, and it is sent to second terminal；The local area image data include：Corresponding frame head, frame packet and frame
Tail；The frame packet includes having for identifying in the image class and current frame image data that current frame image data are the second class image
Show the image data packet of newer regional location and region image data；
Local recognition unit, the corresponding image class of the local area image data, show that first terminal is sent for identification
The frame image data be the second class image, obtain corresponding regional location and region image data；
Local display unit is obtained for region image data correspondence to be filled into previous frame image data according to regional location
The current frame image data shown to first terminal Local hydrodynamic unit, and correspondence is shown in second terminal.
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| CN108021347A (en) * | 2017-12-29 | 2018-05-11 | 航天科工智慧产业发展有限公司 | A kind of method of Android terminal Screen sharing |
| CN111787355A (en) * | 2020-06-29 | 2020-10-16 | 西安万像电子科技有限公司 | Remote image updating method and device |
| CN112214188B (en) * | 2020-09-11 | 2024-06-07 | 西安万像电子科技有限公司 | Image processing method, device, storage medium and processor |
| CN112435634A (en) * | 2020-11-24 | 2021-03-02 | 歌尔光学科技有限公司 | Image display method, image display apparatus, and readable storage medium |
| CN113781589A (en) * | 2021-08-20 | 2021-12-10 | 深圳天德钰科技股份有限公司 | Display control method, display control circuit and display device |
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