CN107105184A - A kind of same screen projective techniques of mobile terminal in portrait layout advertisement machine - Google Patents
A kind of same screen projective techniques of mobile terminal in portrait layout advertisement machine Download PDFInfo
- Publication number
- CN107105184A CN107105184A CN201710214076.8A CN201710214076A CN107105184A CN 107105184 A CN107105184 A CN 107105184A CN 201710214076 A CN201710214076 A CN 201710214076A CN 107105184 A CN107105184 A CN 107105184A
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- China
- Prior art keywords
- portrait layout
- mobile terminal
- advertisement machine
- black surround
- video
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal
- H04N7/0122—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal the input and the output signals having different aspect ratios
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F27/00—Combined visual and audible advertising or displaying, e.g. for public address
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Graphics (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention belongs to technical field of data transmission, a kind of same screen projective techniques of mobile terminal in portrait layout advertisement machine are disclosed, mobile terminal can not (main flow form be 16 by transverse screen for solving:9) video image is converted to portrait layout (such as 9:16) form and the problem of cause black surround occur in portrait layout advertisement machine.Same screen projective techniques of the mobile terminal of the present invention in portrait layout advertisement machine, can by the transverse screen in mobile phone or flat board (main flow form be 16:9) vision signal is converted into portrait layout (such as 9:16) form, and black surround processing is carried out before conversion, solve picture after throwing screen conversion and diminish, the problem of picture periphery is blank screen, the throwing screen application of portrait layout advertisement machine has been applicable, the blank that mobile phone throws screen portrait layout advertisement machine has been filled up so that the application of video advertising player is greatly increased.
Description
Technical field
The invention belongs to technical field of data transmission, and in particular to a kind of same screen of mobile terminal in portrait layout advertisement machine is thrown
Shooting method.
Background technology
The application of portrait layout advertisement machine is very extensive, and place as increasing similar lobby uses portrait layout advertisement
Machine, many finance products of bank be all by mobile phone app should mode promote, if customer manager is needed in mobile phone
Solution financing application, mobile phone interface is directly projected and client's explanation is given in portrait layout advertisement machine, different sense can be brought to user
By screen is bigger, becomes apparent from, especially while when being explained to several users, the mobile phone screen of smaller screen is projected into large-size screen monitors
Portrait layout advertisement machine on, just seem more convenient and important, similar application is also more and more in hotel, education sector.
The throwing screen technology of android system equipment is formulated with reference to Wi-Fi Display Specification, Wifi alliances
Miracast agreements.During transmission, for the resolution ratio of image, the agreement provides 16：9 specification, does not provide 9：
16 specification, for needing 9：16 display device, such as portrait layout advertisement machine display device, just have no idea to use；Produce this
The problem of sample is that the Miracast agreements that Wi-Fi Alliance is formulated mainly are used to TV, and main flow TV display specification is exactly 16：
9.But all networkings of more and more display devices, such as digital signage display device, the display of these equipment now
Screen has 16：9 specification, but also have 9：16 specification, such as portrait layout advertisement machine.
Existing wireless audio-video transmission agreement, Miracast, Airplay etc. do not provide 9：The video of 16 specifications.
No matter the interface of mobile terminal (mobile phone or flat board) is portrait layout, or transverse screen, the video information of outflow is all 16：9 form, such as
Fruit is that transverse screen does not have black surround, if portrait layout outflow will blacken side.
The content of the invention
In order to solve, mobile terminal can not (main flow form be 16 to the present invention by transverse screen:9) video image is converted to portrait layout
(such as 9:16) form and the problem of cause black surround occur in portrait layout advertisement machine, and it is wide in portrait layout to provide a kind of mobile terminal
Same screen projective techniques on announcement machine, mobile terminal (such as mobile phone plane plate) can be spread out of 16：9 video image is converted to 9:16
Form, and before conversion carry out black surround processing, solve throwing screen conversion after picture diminish, picture periphery is asking for blank screen
Topic.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
A kind of same screen projective techniques of mobile terminal in portrait layout advertisement machine, including the master chip docking being arranged on PCB
The step of vision signal received is handled, it is characterised in that the step of master chip handles vision signal includes following step
Suddenly：
The step of master chip handles video image comprises the following steps:
A：If mobile terminal is laterally disposed, carry out in accordance with the following steps：
A1) go with 16/9 and 16/10 to calculate the width w_16_9 and w_ of 16/9 form and 16/10 video image respectively
16_10, the height of video image is constant, and the height of video image is obtained from video image information, wherein w_16_9=H*9/
16, w_16_10=H*10/16；
A2) in the middle of w_16_10 and w_16_9, N groups are taken on a line since the w_16_10 to be connected two pictures from top to bottom
The absolute value of poor round numbers between the brightness value or chromatic value of element, if the absolute value is not equal to 0, connected two pixels in surface
Brightness value or chromatic value are variant, and wherein N is the odd number more than 3；
A3) in the N group absolute values drawn, if the absolute value more than half is not 0, then judge herein as black surround side
Boundary carries out cutting black surround processing；Black surround processing need not be cut if black surround border is not found；
B：If mobile terminal is vertical placement, carries out or carry out in accordance with the following steps according to above-mentioned A：
B1) calculated according to the ratio of width to height W/H of original video image for fixed proportion, carry out cutting black surround processing for the first time, and
Keep cutting the constant H/CW=W/H of height of the image-region left after black surround for the first time, obtain CW=H*H/W；Wherein W is original
The width of video image, H is the height of original video image, and CW cuts the width of the image-region left after black surround for first time
Degree；
B2 the image-region for) leaving first time cutting black surround is placed in the middle, calculates the image for cutting left after black surround for the first time
The position CX in region, wherein CX coordinate value X=(W-CW)/2；
B3 CX and CW numeral) is resolved into normal portrait layout form, numeral first moved right one after parsing, then to
Move left one；
B4) carry out second according to CX and CW value and cut black surround processing.
In order to reduce error, after step A1 has been carried out, w_16_10 sideline is moved to the left a pixel, by w_
16_9 sideline moves right a pixel；Then step A2 is carried out again.
Memory modules, flash memory module, WIFI module, power module and video output interface are also integrated with pcb board, it is described
Video output interface and WIFI module are connected with master chip, and the master chip is integrated with system CPU, video CPU and audio CPU,
The power module is electrically connected with master chip, memory modules, flash memory module and WIFI module, the memory modules and flash memory module
It is connected with master chip；The video CPU vision signals are handled.
The video output interface includes HDMI, USB interface and AV interfaces.
The WIFI module is the wireless WIFI modules of RTL8188ETV or RTL8192DU.
Wired network interface and optical fiber interface are also integrated with pcb board；It is integrated with the pcb board for accessing external power source
Power interface, the power interface is connected with power module.
Compared with prior art, the invention has the advantages that：
Same screen projective techniques of the mobile terminal of the present invention in portrait layout advertisement machine, can be by 16 in mobile phone or flat board：9
Vision signal is converted into 9:16 form, and black surround processing is carried out before conversion, solve picture after throwing screen conversion and diminish, draw
The problem of face periphery is blank screen, has been applicable the throwing screen application of portrait layout advertisement machine, has filled up the blank that mobile phone throws screen portrait layout advertisement machine,
So that the application of video advertising player is greatly increased.
The ratio of width to height W/H according to original video image of the present invention carries out cutting black surround processing for the first time for fixed proportion, and
Keep cutting the constant H/CW=W/H of height of the image-region left after black surround for the first time, it is intended that left after excision black surround
Image is carried out will not metamorphopsic distortion after rotation amplification.
Brief description of the drawings
Fig. 1 is the principle schematic in the case of the B of the present invention；
Fig. 2 is the principle schematic in the case of the A of the present invention；
Fig. 3 is the structured flowchart of the present invention；
Fig. 4 is the pictorial diagram of the pcb board of the present invention；
Reference：1st, pcb board, 2, memory modules, 3, master chip, 4, WIFI module, 5, power interface, 6, USB interface,
7th, wired network interface, 8, flash memory module, 9, HDMI, 10, USB interface, 11, AV interfaces, 12, optical fiber interface.
Embodiment
With reference to embodiment, the invention will be further described, and described embodiment is only a part of the invention
Embodiment, is not whole embodiments.Based on the embodiment in the present invention, one of ordinary skill in the art is not making
Other embodiments used obtained under the premise of creative work, belong to protection scope of the present invention.
With reference to accompanying drawing, the operation principle of portrait layout advertisement machine of the invention is：Master chip starts to read the code in flash memory
Run in internal memory DROM, initialize each hardware module, softap and P2P hotspot services are provided finally by wifi module.This
Mobile phone terminal can connect the upper circuit board, specifically Android device by the two hotspot services (such as when individual
Android phone or flat board) what is connected is P2P focuses, what ios device (such as iphone or ipad) was connected is
Softap, after successful connection, vision signal (is included audio signal, the specification of video is by ios device by Airplay agreements
16：9) the Wifi modules by Wifi channel transfers to circuit board；Android device is by Miracast agreements by vision signal
(audio signal is included, the specification of video is 16：9) the Wifi modules by Wifi channel transfers to circuit board, host CPU can be by
The vision signal from mobile phone or flat board that Wifi modules are received is put into internal memory DROM, then controls video processing module pair
Vision signal in DROM is handled, and specifically the step of processing has：
Mobile phone or pad are transmitted 16 are received with screen device：After 9 video image, following cut at black surround is carried out respectively
Reason：
The throwing screen application of current portrait layout advertisement machine, most usage scenarios are all the reasons of such as bank based on portrait layout
Property product app etc., is presented in the way of webpage, even if there is video display to be also based on portrait layout form mostly.
Specific processing method：
A：If mobile terminal is laterally disposed, it is considered to which mobile phone or pad mobile phone or flat board when doing with screen are sometimes erected
Directly put, sometimes put sidewards, when transmission, it may be possible to portrait layout, it is also possible to be transverse screen, this is accomplished by black surround detection, presses
Carried out according to following steps：
A1) as shown in Fig. 2 going to calculate the width of 16/9 form and 16/10 video image respectively with 16/9 and 16/10
W_16_9 and w_16_10, the height of video image is constant, and the height of video image is obtained from video image information, wherein w_
16_9=H*9/16, w_16_10=H*10/16；In order to reduce error, after step A1 has been carried out, by w_16_10 sideline
A pixel is moved to the left, w_16_9 sideline is moved right a pixel；Then step A2 is carried out again.I other words：x_16_
10=(w-w-16-10)>>1；X_16_9=(w-w-16-9)>>1；
Wherein in accompanying drawing 2, search_left=MIN (w-16-9, w-16-10)-SEARCH_TOLERANCE；
If search_left value is less than 0, search_left is entered as 0
Search_right=MAX (w-16-9, w-16-10)+SEARCH_TOLERANCE；
SEARCH_TOLERANCE=3, this numerical value can be changed, it is therefore an objective to which error acceptable scope just can be with.
A2) in the middle of w_16_10 and w_16_9, N groups are taken (according to debugging on a line from top to bottom since the w_16_10
Situation is determined, for example, take 5 groups or 7 groups) poor round numbers is absolute between the brightness value or chromatic value of two pixels that are connected
Value, if the absolute value is not equal to 0, the brightness value or chromatic value of connected two pixels in surface are variant, and wherein N is more than 3
Odd number；
A3) in the N group absolute values drawn, if the absolute value more than half is not 0, then judge herein as black surround side
Boundary carries out cutting black surround processing；Otherwise black surround processing need not be cut if black surround border is not found；According to the structure decision of detection
Whether need to cut black surround, the function such as carry out rotation accordingly (can be 90 degree, 180 degree or 270 degree), scale.
B：If mobile terminal is vertical placement, carries out or carry out in accordance with the following steps according to above-mentioned A：
B1) calculated according to the ratio of width to height W/H of original video image for fixed proportion, carry out cutting black surround processing for the first time, and
Keep cutting the constant H/CW=W/H of height of the image-region left after black surround for the first time, obtain CW=H*H/W；Wherein W is original
The width of video image, H is the height of original video image, and CW cuts the width of the image-region left after black surround for first time
Degree；
B2 the image-region for) leaving first time cutting black surround is placed in the middle, calculates the image for cutting left after black surround for the first time
The position CX in region, wherein CX coordinate value X=(W-CW)/2；
B3 CX and CW numeral) is resolved into normal portrait layout form, numeral first moved right one after parsing, then to
Move left one；
B4) carry out second according to CX and CW value and cut black surround processing.
After above-mentioned processing, host CPU can be by changed 9：The video of 16 forms is defeated by HDMI (or USB interface)
Go out the HDMI input interfaces to portrait layout advertisement machine, portrait layout advertisement machine is again by 9：16 video shows, be so achieved that by
The application that the interface of mobile phone or flat board is projected in portrait layout advertisement machine.
Portrait layout advertisement machine can also be encrypted, and this possesses softap functions with screen device, first allow mobile phone or pad to connect
Connect with screen device focus, and carry out password authentification, this when, do a facility information and preserve file, will enter by connection focus
Went the mobile phone of password authentification or pad facility information, such as mac address information recordings get off, in ensuing miracast
Or when airplay throwing screens, in mobile phone or pad and same screen device progress communication stage, to that will believe with the equipment of screen
Breath contrast (such as mac) contrast, if the mac information of the equipment and the preservation facility information text being stored in inside same screen device system
Mac address bases are consistent inside part, then can carry out normal throw and shield, if it is inconsistent, directly exiting, it is impossible to carry out throwing screen.
Same screen projective techniques of the mobile terminal of the present invention in portrait layout advertisement machine, can be by 16 in mobile phone or flat board：9
Vision signal be converted into 9:16 form, and black surround processing is carried out before conversion, solve picture after throwing screen conversion and diminish,
The problem of picture periphery is blank screen, has been applicable the throwing screen application of portrait layout advertisement machine, has filled up the sky that mobile phone throws screen portrait layout advertisement machine
In vain so that the application of video advertising player is greatly increased, while having carried out encrypted authentication to throwing screen, provided for industry user
Security assurance information.
Same screen projection system of the mobile terminal of the present invention in portrait layout advertisement machine includes integrated on pcb board, the pcb board
Have master chip, memory modules, flash memory module, WIFI module, power module and a video output interface, the video output interface and
WIFI module is connected with master chip, and the master chip is integrated with system CPU, video CPU and audio CPU, the power module with
Master chip, memory modules, flash memory module and WIFI module electrical connection, the memory modules and flash memory module are connected with master chip.
As a kind of preferred mode of the present invention, the master chip is MIP24KC chips.
Further, the video output interface includes HDMI, USB interface and AV interfaces.
Further, the WIFI module is the wireless WIFI modules of RTL8188ETV or RTL8192D.
Further, wired network interface and optical fiber interface, wired network interface and optical fiber interface and master are also integrated with the pcb board
Chip is connected.
Further, the power interface for accessing external power source, the power interface and electricity are integrated with the pcb board
Source module is connected.
Further, the power module be delivered to master chip, memory modules and WIFI module voltage it is different.Electricity
5V, 2A of source module input power supply, power module are converted into three-way power 3V, 1.5V, 1.1V, and this three-way power is conveyed respectively
It is powered to master chip, internal memory and flash memory, WIFI module.
The present invention the course of work be：Master chip, which starts to move the code in flash memory in internal memory DROM to, to be run, initialization
Each hardware module, softap and P2P hotspot services are provided finally by wifi module.This when, mobile phone terminal can be by this
Two upper circuit boards of hotspot service connection, specifically Android device (such as Android phone or flat board) connection is
P2P focuses, ios device (such as iphone or ipad) connection is softap, and after successful connection, ios device passes through
Vision signal (is included audio signal, the specification of video is 16 by Airplay agreements：9) by Wifi channel transfers to circuit board
Wifi modules；Vision signal (is included audio signal, the specification of video is 16 by Android device by Miracast agreements：
9) the Wifi modules by Wifi channel transfers to circuit board, what host CPU can receive Wifi modules comes from mobile phone or flat
The vision signal of plate is put into internal memory DROM, then controls video processing module to handle the vision signal in DROM,
The present invention can be by 16 in mobile terminal (mobile phone or flat board)：9 vision signal is converted into 9:16 form, and
Black surround processing is carried out before conversion, is solved picture after throwing screen conversion and is diminished, the problem of picture periphery is blank screen has been applicable perpendicular
Shield the throwing screen application of advertisement machine, fill up the blank that mobile phone throws screen portrait layout advertisement machine so that the application of portrait layout advertisement machine is big
Big increase.
Claims (7)
1. a kind of same screen projective techniques of mobile terminal in portrait layout advertisement machine, including the master chip being arranged on PCB is to receiving
To vision signal handled the step of, it is characterised in that the master chip processing video image the step of comprise the following steps:
A：If mobile terminal is laterally disposed, carry out in accordance with the following steps：
A1) go with 16/9 and 16/10 to calculate the width w_16_9 and w_16_ of 16/9 form and 16/10 video image respectively
10, the height of video image is constant, and the height of video image is obtained from video image information, wherein w_16_9=H*9/16,
W_16_10=H*10/16；
A2) in the middle of w_16_10 and w_16_9, N groups are taken on a line since the w_16_10 to be connected two pixels from top to bottom
The absolute value of poor round numbers between brightness value or chromatic value, if the absolute value is not equal to 0, the brightness of connected two pixels in surface
Value or chromatic value are variant, and wherein N is the odd number more than 3；
A3) in the N group absolute values drawn, if the absolute value more than half is not 0, then judge as black surround border to enter herein
Row cuts black surround processing；Black surround processing need not be cut if black surround border is not found；
B：If mobile terminal is vertical placement, carries out or carry out in accordance with the following steps according to above-mentioned A：
B1) calculated according to the ratio of width to height W/H of original video image for fixed proportion, carry out cutting black surround processing for the first time, and keep
The constant H/CW=W/H of height of the image-region left after black surround is cut for the first time, obtains CW=H*H/W；Wherein W is former video
The width of image, H is the height of original video image, and CW cuts the width of the image-region left after black surround for first time；
B2 the image-region for) leaving first time cutting black surround is placed in the middle, calculates the image-region for cutting left after black surround for the first time
Position CX, wherein CX coordinate value X=(W-CW)/2；
B3 CX and CW numeral) is resolved into normal portrait layout form, numeral first moved right one after parsing, then to moving to left
It is dynamic one；
B4) carry out second according to CX and CW value and cut black surround processing.
2. same screen projective techniques of the mobile terminal according to claim 1 in portrait layout advertisement machine, it is characterised in that its
In, after step A1 has been carried out, w_16_10 sideline is moved to the left a pixel, w_16_9 sideline is moved right
One pixel.
3. same screen projective techniques of the mobile terminal according to claim 1 in portrait layout advertisement machine, it is characterised in that PCB
Memory modules, flash memory module, WIFI module, power module and video output interface are also integrated with plate, the video frequency output connects
Mouth and WIFI module are connected with master chip, and the master chip is integrated with system CPU, video CPU and audio CPU, the power supply mould
Block is electrically connected with master chip, memory modules, flash memory module and WIFI module, and the memory modules and flash memory module connect with master chip
Connect；The video CPU is handled vision signal.
4. same screen projective techniques of the mobile terminal according to claim 3 in portrait layout advertisement machine, it is characterised in that described
Video output interface includes HDMI, USB interface and AV interfaces.
5. same screen projective techniques of the mobile terminal according to claim 3 in portrait layout advertisement machine, it is characterised in that described
WIFI module is the wireless WIFI modules of RTL8188ETV or RTL8192DU.
6. same screen projective techniques of the mobile terminal according to claim 3 in portrait layout advertisement machine, it is characterised in that PCB
Wired network interface and optical fiber interface are also integrated with plate.
7. same screen projective techniques of the mobile terminal according to claim 3 in portrait layout advertisement machine, it is characterised in that PCB
The power interface for accessing external power source is integrated with plate, the power interface is connected with power module.
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| CN107734316A (en) * | 2017-10-26 | 2018-02-23 | 上海青橙实业有限公司 | Portrait layout projecting method and terminal device |
| CN110267073A (en) * | 2019-07-24 | 2019-09-20 | 深圳市颍创科技有限公司 | A kind of throwing screen picture, which show and throws, shields picture spinning solution |
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