CN106657842A - Double-screen display method and system - Google Patents
Double-screen display method and system Download PDFInfo
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- CN106657842A CN106657842A CN201710008944.7A CN201710008944A CN106657842A CN 106657842 A CN106657842 A CN 106657842A CN 201710008944 A CN201710008944 A CN 201710008944A CN 106657842 A CN106657842 A CN 106657842A
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- 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
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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
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
- H04N21/4316—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
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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
- H04N21/47—End-user applications
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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
- H04N21/47—End-user applications
- H04N21/485—End-user interface for client configuration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/57—Control of contrast or brightness
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- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Marketing (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention provides a double-screen display method and system and relates to the technical field of double-screen display. The system comprises a master display device and an expanded display device. The master display device comprises a drive unit, a first control unit and an HDMI output interface. The drive unit generates a first drive signal. The first control unit generates a brightness adjustment signal under the condition of judging that the first drive signal satisfies a brightness adjustment condition for carrying out brightness adjustment on the expanded display device. The HDMI output interface inputs the brightness adjustment signal to the expanded display device. The expanded display device adjusts display brightness according to the brightness adjustment signal. According to the method and the system, the technical problem that in the prior art, the double-screen display system cannot adjust the display brightness of the expanded display device through the master display device is mitigated.
Description
Technical field
The present invention relates to shuangping san technical field, more particularly, to a kind of double-screen display method and system.
Background technology
In recent years, it is desirable to have the electronic equipment of display screen is seen everywhere in all trades and professions in life, for example, film
The ticket machine of institute, the cashing machine of supermarket, the advertisement machine in publicity field.Also, with the development of science and technology, increasing electronics sets
It is standby that extendable display screen is generally also equipped with addition to main display, the function of shuangping san can be realized, so as to greatly meet
The demand of user so that user while runtime program and some application programs, goes back on the main display of electronic equipment
More abundant display image can be watched on the extendable display screen of electronic equipment, for example, user can be on main display
Film is watched on extendable display screen when playing game.
Specifically, the main display device in dual-screen display device controls main display device by operating system and extension shows
Device realizes shuangping san.Current main display device is mostly only one of which HDMI, and main display device is by being somebody's turn to do
HDMI is come to extension display device outputting video streams.But, the display that main display device lacks to extending display device is bright
The control unit of degree, so as to main display device cannot adjust the display brightness of extension display device.
The content of the invention
In view of this, it is an object of the invention to provide a kind of double-screen display method and system, to alleviate prior art in
Double-Screen Display System in cannot be adjusted by main display device extension display device display brightness technical problem.
In a first aspect, a kind of Double-Screen Display System is embodiments provided, including：Main display device and extension show
Device, the main display device includes main display, driver element, the first control unit and HDMI output interface, the extension
Display device includes extendable display screen, input interface and the second control unit, wherein,
The driver element is used to generate the first drive signal, wherein, first drive signal is used to determine whether to drive
It is dynamic that brightness regulation is carried out to the extendable display screen；
First control unit is connected with the driver element, for receiving described the of driver element output
One drive signal, and the brightness of brightness regulation is carried out to the extendable display screen adjust judging that first drive signal meets
In the case of section condition, then brightness regulated signal is generated, and the brightness regulated signal is exported to the HDMI output interface；
The HDMI output interface is connected with first control unit, for view data to be played and receiving
Brightness regulated signal output to the input interface；
The input interface is connected by data line with the HDMI output interface, for showing to the extension
Screen sends the view data described to be played for receiving, and the brightness tune for receiving is sent to second control unit
Section signal；
Second control unit is connected with the input interface, described in being adjusted according to the brightness regulated signal
The display brightness of extendable display screen.
With reference in a first aspect, embodiments provide the first possible embodiment of first aspect, wherein, institute
Stating the first drive signal includes pwm control signal, wherein, the dutycycle of the pwm control signal is used to determine whether to institute
Stating extendable display screen carries out brightness regulation.
With reference in a first aspect, embodiments provide second possible embodiment of first aspect, wherein, institute
State driver element to be additionally operable to generate the second drive signal；
First control unit is additionally operable to receive second drive signal of the driver element output, is judging
In the case that second drive signal meets the entry condition for driving the extendable display screen to start, then enabling signal is generated,
And export the enabling signal to the HDMI output interface；
The HDMI output interface is additionally operable to the enabling signal for receiving output to the input interface, so that institute
Input interface is stated by enabling signal output to second control unit, wherein, second control unit is being received
After the enabling signal, the startup of the extendable display screen is controlled.
With reference in a first aspect, embodiments provide the third possible embodiment of first aspect, wherein, institute
State input interface and be MIPI display screens for MIPI input interfaces, the main display and the extendable display screen；
The main display device also includes conversion chip, and the conversion chip is arranged at the HDMI output interface and described
Between input interface, for obtaining the view data described to be played of the HDMI output interface output, and will be described to be played
View data is converted into MIPI view data, to be shown the MIPI view data to the extension by the input interface
Screen sends；
The conversion chip is also connected with first control unit, and first control unit is additionally operable to judging
In the case that second drive signal meets the entry condition for driving the extendable display screen to start, the conversion chip is controlled
Carrying out initialize.
With reference in a first aspect, embodiments provide the 4th kind of possible embodiment of first aspect, wherein, institute
State the first control unit to be additionally operable to judging the startup that the second drive signal satisfaction drives the extendable display screen to start
In the case of condition, judged whether to drive the conversion chip to initialize according to second drive signal；If it is judged that driving
The dynamic conversion chip initialization, the then initialization of the first control unit control conversion chip；If it is judged that not
The conversion chip is driven to initialize, then whether first control unit judges to receive the duration of second drive signal
More than preset duration, if greater than the preset duration, then control the conversion chip and initialized.
With reference in a first aspect, embodiments provide the 5th kind of possible embodiment of first aspect, wherein, institute
It is A type HDMI output interfaces to state HDMI output interface, and No. 14 pins of the A types HDMI output interface are used to receive the brightness
Regulate signal, or, the enabling signal.
With reference in a first aspect, embodiments provide the 6th kind of possible embodiment of first aspect, wherein, institute
Stating main display device also includes：Equipment loading unit, the equipment loading unit is connected with the HDMI output interface, for supervising
Survey whether the HDMI output interface is connected with the extension display device, and corresponding control letter is sent according to monitoring result
Number, wherein, corresponding control signal is used to determine whether to export the picture number to be played to the HDMI output interface
According to.
With reference in a first aspect, embodiments provide the 7th kind of possible embodiment of first aspect, wherein,
The main display device also includes：Memory cell, the 3rd control unit and the 4th control unit, wherein,
The view data to be played is stored in the memory cell according to the broadcast format of the main display；
3rd control unit is connected between the memory cell and the main display, for single from the storage
The view data to be played is obtained in unit, and controls the main display shows the view data to be played to form video
Stream；
4th control unit is connected to the memory cell, the equipment loading unit and the HDMI output interface
Between, determine for the corresponding control signal that sent according to the equipment loading unit and deposited described in reading or not reading
View data described to be played in storage unit, and when the view data to be played is read, to the HDMI output interface
Export the view data to be played.
With reference in a first aspect, embodiments provide the 8th kind of possible embodiment of first aspect, wherein, institute
State the first control unit to be additionally operable to after to HDMI output interface output enabling signal, control the HDMI output interface
Disconnect, also, after monitoring that the conversion chip completes initialization, control the HDMI output interface and connect.
Second aspect, the embodiment of the present invention also provides a kind of double-screen display method of above-mentioned Double-Screen Display System, including：
Generate the first drive signal；
Determine whether to drive according to first drive signal and brightness regulation is carried out to the extendable display screen；
If it is judged that first drive signal meets the brightness regulation that brightness regulation is carried out to the extendable display screen
Condition, then generate brightness regulated signal；
By view data to be played and the brightness regulated signal for generating output to defeated in the Double-Screen Display System
Incoming interface, so that the input interface sends the brightness for receiving to the second control unit in the Double-Screen Display System
Regulate signal；
Second control unit is adjusted after the brightness regulated signal is received according to the brightness regulated signal
The display brightness of the extendable display screen.
The embodiment of the present invention brings following beneficial effect：
In embodiments of the present invention, first the first drive signal is generated by driver element 12；Then, by the first control
Unit 13 judges whether the first drive signal meets the brightness regulation condition that brightness regulation is carried out to extendable display screen 21, and
In the case of judging to meet, brightness regulated signal is generated；HDMI output interface 14 is by view data to be played and brightness regulation
Input interface 22 of the signal output to extension display device 2；Second control unit 23 of extension display device 2 is according to the brightness
Regulate signal adjusts the display brightness of extendable display screen 21.That is, the drive signal that described main display device 1 passes through driver element 12
Control the display brightness of extension display device 2.
Thus, the embodiment of the present invention is alleviated cannot be by main display device 1 in Double-Screen Display System of the prior art
To adjust the technical problem of the display brightness of extension display device 2.
Other features and advantages of the present invention will be illustrated in the following description, also, the partly change from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages are in specification, claims
And in accompanying drawing specifically noted structure realizing and obtain.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Description of the drawings
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to concrete
The accompanying drawing to be used needed for embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is a kind of structural representation of Double-Screen Display System that the embodiment of the present invention one is provided；
Fig. 2 is the structural representation of another kind of Double-Screen Display System that the embodiment of the present invention one is provided；
Fig. 3 is a kind of structural representation of the HDMI output interface in the Double-Screen Display System that the embodiment of the present invention one is provided
Figure；
Fig. 4 is the structural representation of another kind of Double-Screen Display System that the embodiment of the present invention one is provided；
Fig. 5 is the structural representation of another kind of Double-Screen Display System that the embodiment of the present invention one is provided；
Fig. 6 is a kind of flow chart of double-screen display method that the embodiment of the present invention two is provided；
Fig. 7 is the flow chart of another kind of double-screen display method that the embodiment of the present invention two is provided；
Fig. 8 is the flow chart of another kind of double-screen display method that the embodiment of the present invention two is provided.
Icon：The main display devices of 1-；11- main displays；12- driver elements；The control units of 13- first；14-HDMI is exported
Interface；15- conversion chips；16- equipment loading units；17- memory cell；The control units of 18- the 3rd；The control units of 19- the 4th；
2- extends display device；21- extendable display screens；22- input interfaces；The control units of 23- second.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Technical scheme be clearly and completely described, it is clear that described embodiment is a part of embodiment of the invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
In existing shuangping san technology, main display device lacks the control list of the display brightness to extending display device
Unit, so as to main display device cannot configure the display brightness of extension display device, and then main display device and extension display device
Display brightness be unable to reach unanimously.Based on this, a kind of double-screen display method provided in an embodiment of the present invention and system, Ke Yihuan
Solving cannot adjust the display brightness of extension display device by main display device in Double-Screen Display System of the prior art
Technical problem.
For ease of understanding the present embodiment, a kind of Double-Screen Display System disclosed in the embodiment of the present invention is entered first
Row is discussed in detail.
Embodiment one：
As shown in figure 1, a kind of Double-Screen Display System, including：Main display device 1 and extension display device 2, main display device
1 includes main display 11, driver element 12, the first control unit 13 and HDMI output interface 14, and extension display device 2 includes expanding
Exhibition display screen 21, the control unit 23 of input interface 22 and second, wherein,
Driver element 12 is used to generate the first drive signal, wherein, the first drive signal is used to determine whether to drive to expanding
Exhibition display screen 21 carries out brightness regulation；
First control unit 13 is connected with driver element 12, for receiving the first driving letter of the output of driver element 12
Number, and judge the first drive signal meet extendable display screen 21 is carried out brightness regulation brightness regulation condition situation
Under, then brightness regulated signal is generated, and export brightness regulated signal to HDMI output interface 14；
HDMI output interface 14 is connected with the first control unit 13, for view data to be played is bright with what is received
Degree Regulate signal output is to input interface 22；
Input interface 22 is connected by data line with HDMI output interface 14, for sending to extendable display screen 21
The view data to be played for receiving, and the brightness regulated signal for receiving is sent to the second control unit 23；
Second control unit 23 is connected with input interface 22, for adjusting extendable display screen 21 according to brightness regulated signal
Display brightness.
Specifically, driver element 12 sends drive signal and can be grasped by the operating system in main display device 1 is installed on
Control.Used as a operating system that more industry electronic equipment are expanded to from mobile phone, panel computer, it supports double screen to Android
The function of display, thus, main display device 1 is inner can be installed Android operation system to realize the function of shuangping san, and
Driver element 12 is manipulated in Android operation system and sends drive signal.
In the embodiment of the present invention, the main display device 1 of Double-Screen Display System include main display 11, driver element 12, the
One control unit 13 and HDMI output interface 14, and the extension display device 2 of Double-Screen Display System includes extendable display screen 21, defeated
The control unit 23 of incoming interface 22 and second.Wherein, driver element 12 generates the first drive signal；First control unit 13 is judging
Go out in the case that the first drive signal meets the brightness regulation condition of brightness regulation is carried out to extendable display screen 21, generate brightness and adjust
Section signal；HDMI output interface 14 is by view data to be played and brightness regulated signal output to the input for extending display device 2
Interface 22；Second control unit 23 of extension display device 2 is bright according to the display that brightness regulated signal adjusts extendable display screen 21
Degree.That is, main display device 1 controls the display brightness of extension display device 2 by the first drive signal of driver element 12.
Thus, the embodiment of the present invention is alleviated cannot be by main display device 1 in Double-Screen Display System of the prior art
To adjust the technical problem of the display brightness of extension display device 2.
Alternatively, the first drive signal includes pwm control signal, wherein, the dutycycle of pwm control signal is used to determine
Whether brightness regulation is carried out to extendable display screen 21.
In the embodiment of the present invention, using pwm control signal as drive signal because noise only strong to being enough to patrol
Volume 1 when changing into logical zero or logical zero being changed into into logic 1, could produce impact on data signal, thus pwm control signal
Influence of noise is low, so as to ensure that the reliability of control.
Alternatively, driver element 12 is additionally operable to generate the second drive signal；
First control unit 13 is additionally operable to receive the second drive signal of the output of driver element 12, is judging the second driving
In the case that signal meets the entry condition for driving extendable display screen 21 to start, then enabling signal is generated, and connect to HDMI outputs
Mouth 14 exports enabling signals；
HDMI output interface 14 is additionally operable to the enabling signal for receiving output to input interface 22；So that input interface 22
Enabling signal is exported to the second control unit 23；Second control unit 23 is after enabling signal is received, and control extension is aobvious
The startup of display screen 21.
Specifically, can adopt in the second drive signal also includes pwm control signal.Can driver element 12 send
When the PWM duty cycle of pwm control signal is in the first number range, that is, represent the first drive signal；And driver element 12
When the PWM duty cycle of the pwm control signal for going out is in the range of second value, that is, represent the second drive signal.Need explanation
It is, the first number range and the non-overlapping numerical value of second value scope for example, the first number range can be selected for 4% to 8%,
And second value scope is 21% to 100%, in the case of so selecting, the spacing value of two scopes be enough to overcome the shadow of noise
Ring, so as to ensure the reliability of pwm control signal control performance.
Further, the first control unit 13 judges received PWM control letters after pwm control signal is received, first
Number dutycycle be in the range of 4% to 8%, if being also greater than 21%. judges that the dutycycle of pwm control signal is
More than 21%, then generate the corresponding brightness regulated signal of dutycycle with pwm control signal and export to HDMI output interface 14
Brightness regulated signal.For example, preset rules regulation：Brightness regulated signal is equally regulated and controled using PWM control technologies, also,
When the dutycycle of pwm control signal is in the range of 21% to 30%, the PWM duty cycle in brightness regulated signal is 10%；
And the dutycycle of pwm control signal in the range of 31% to 40% when, the PWM duty cycle in brightness regulated signal is
20%.So, if the first control unit 13 is after the dutycycle for judging pwm control signal is greater than 21%, and continue to sentence
Breaking, the dutycycle of pwm control signal be in the range of 31% to 40%, then to export the brightness that PWM duty cycle is 20% and adjust
Section signal.
In alternative embodiment of the present invention, the first control unit 13 is being judged just to be connect in the case of starting extendable display screen 21
The first drive signal is received to be adjusted to the display brightness of extendable display screen 21, so that the display of extendable display screen 21
The more scientific rationalization of brightness regulation process.
Additionally, occurring in that a kind of novel liquid crystal mould with ultrahigh resolution and very-high solution density on market in recent years
Group, the interface of this liquid crystal module and internal display processing circuit all adopt MIPI (Mobile Industry Processor
Interface, that is, move Industry Processor Interface) signaling interface, by the way that, mobile, each component in portable equipment inside (is for example taken the photograph
As head, display screen, processor) nuclear interface standardizing and open each other, reach the effect for improving performance, reduces cost and power consumption
Really.At present, these novel liquid crystal modules are used as main display device 1, in order to be able to carry out with the liquid crystal module of generally existing on market
Although connection, the display screen of its own is MIPI screens, but output interface remains as HDMI output interface, and in order to allow extension to show
Device 2 equally has ultrahigh resolution and very-high solution density, thus extendable display screen 21 also is intended to be set to MIPI screens, now
Correspondingly input interface 22 is MIPI input interfaces.
In consideration of it, as an alternative embodiment of the present invention, as shown in Fig. 2 main display device 1 also includes conversion chip
15, conversion chip 15 is arranged between HDMI output interface 14 and input interface 22, and conversion chip 15 is used for image to be played
View data to be played is converted into MIPI view data by data conversion into MIPI view data, with by input interface 22
MIPI view data is sent to extendable display screen 21；
Conversion chip 15 is also connected with the first control unit 13, and the first control unit 13 is additionally operable to judging described the
In the case that two driving signal meets the entry condition for driving the extendable display screen 21 to start, control conversion chip 15 is carried out just
Beginningization.
Alternatively, the first control unit 13 be additionally operable to judge the second drive signal meet drive extendable display screen 21 open
In the case of dynamic entry condition, judged whether to drive conversion chip 15 to initialize according to the second drive signal；If it is judged that
Conversion chip 15 is driven to initialize, then the first control unit 13 controls the initialization of conversion chip 15；If it is judged that not driving
Conversion chip 15 is initialized, then when whether the first control unit 13 judges the duration for receiving the second drive signal more than presetting
It is long, if greater than the preset duration, then control conversion chip 15 and initialized.
Specifically, for example, preset duration can be set to 2 seconds, and the first control unit 13 is being judged to drive extendable display screen
In the case that 21 start, judge whether the second drive signal drives initialization conversion chip 15, if it is judged that second drives letter
Initialization conversion chip 15 number is not driven, then judges whether the first control unit 13 judges to receive the duration of the second drive signal
More than 2 seconds, such as larger than 2 seconds, then the initialization of conversion chip 15 is controlled.It is also possible to be the second drive signal using PWM controls
Signal, and the PWM duty cycle of pwm control signal then represents that driving initialization turns in the first subrange of second value scope
Chip 15 is changed, the PWM duty cycle of such as pwm control signal is in the range of second value and beyond the first subrange, then it represents that
Do not drive initialization conversion chip 15.In the case where the second drive signal does not drive extendable display screen 21 to start, for HDMI
The view data to be played of the output of output interface 14 can be transfused to the extendable display screen 21 that interface 22 is MIPI input interfaces 22 and broadcast
Put, then carry out conversion chip after the first control unit 13 judges to receive the duration of the second drive signal more than preset duration
15 initialization, further view data to be played to be changed into into MIPI view data.
Alternatively, as shown in figure 3, HDMI output interface 14 is A type HDMI output interfaces, the 14 of A type HDMI output interfaces
Number pin is vacant state during view data to be played is transmitted, and in alternative embodiment of the present invention, the output of A types HDMI connects
No. 14 pins of mouth are used to receive the brightness regulated signal of the output of the first control unit 13, or, enabling signal.
In alternative embodiment of the present invention, No. 14 pins of A type HDMI output interfaces add brightness regulated signal or startup
Signal, it is achieved thereby that deliver while view data to be played is transmitted using HDMI output interface 14 showing dress to extension
The control signal that the startup and display brightness for putting 2 is controlled.
Alternatively, as shown in figure 4, main display device 1 also includes：Equipment loading unit 16, equipment loading unit 16 with
HDMI output interface 14 connects, for monitoring whether HDMI output interface 14 is connected with extension display device 2, and according to monitoring knot
Fruit sends corresponding control signal, wherein, corresponding control signal is used to determine whether to be exported to HDMI output interface 14 and waits to broadcast
Put view data.
Alternatively, as shown in figure 5, main display device 1 also includes：Memory cell 17, the 3rd control unit 18 and the 4th control
Unit processed 19, wherein,
View data to be played is stored in memory cell 17, specifically according to the broadcast format of main display 11, i.e. treat
Play view data to store according to the form of HDMI signals；
3rd control unit 18 is connected between memory cell 17 and main display 11, for obtaining from memory cell 17
View data to be played, and control main display 11 and show view data to be played to form video flowing；
4th control unit 19 is connected between memory cell 17, equipment loading unit 16 and HDMI output interface 14, is used
Determine to read or do not read treating in memory cell 17 in the corresponding control signal sent according to equipment loading unit 16 and broadcast
View data is put, and when view data to be played is read, to HDMI output interface 14 view data to be played is exported.
Specifically, the 3rd control unit 18 includes host liquid crystal display controller, and the 4th control unit 19 includes secondary liquid crystal
Show controller, the control that host liquid crystal display controller and secondary LCD controller pass through operating system (for example, android system)
System, finally realizes the same aobvious display effect of the two separate display or double screen of main display 11 and extendable display screen 21.
Alternatively, the first control unit 13 is additionally operable to after to the output enabling signal of HDMI output interface 14, control
HDMI output interface 14 disconnects, i.e. the cut-out output signal of HDMI output interface 14, also, is monitoring that conversion chip 15 completes
After initialization, control HDMI output interface 14 is connected, so that it is guaranteed that HDMI output interface is not received in the initialization of conversion chip 15
The interference of 14 signals for being exported.
Embodiment two：
As shown in fig. 6, a kind of double-screen display method of above-mentioned Double-Screen Display System, the method comprises the steps：
Step S11, generates the first drive signal；
Step S12, determine whether to drive according to the first drive signal carries out brightness regulation to extendable display screen 21.Wherein,
If it is, execution step S13；Otherwise, terminate this first drive signal driving carries out brightness regulation to extendable display screen 21
Process, the step is not shown in figure 6.
Step S13, generates brightness regulated signal；
Step S14, by view data to be played and the brightness regulated signal for generating output to defeated in Double-Screen Display System
Incoming interface 22, so that input interface 22 sends the brightness regulation letter for receiving to the second control unit 23 in Double-Screen Display System
Number；
Step S15, the second control unit 23 is adjusted according to brightness regulated signal and expanded after brightness regulated signal is received
The display brightness of exhibition display screen 21.
In embodiments of the present invention, first the first drive signal is generated by driver element 12；Then, by the first control
Unit 13 judges whether the first drive signal meets the brightness regulation condition that brightness regulation is carried out to extendable display screen 21, and
In the case of judging to meet, brightness regulated signal is generated；HDMI output interface 14 is by view data to be played and brightness regulation
Input interface 22 of the signal output to extension display device 2；Second control unit 23 of extension display device 2 is according to the brightness
Regulate signal adjusts the display brightness of extendable display screen 21.That is, the drive signal that described main display device 1 passes through driver element 12
Control the display brightness of extension display device 2.
Thus, the embodiment of the present invention is alleviated cannot be by main display device 1 in Double-Screen Display System of the prior art
To adjust the technical problem of the display brightness of extension display device 2.
Alternatively, drive signal generated in step S11 includes pwm control signal, wherein, pwm control signal is accounted for
Empty ratio is used to determine whether to carry out brightness regulation to extendable display screen 21.
Alternatively, as shown in fig. 7, the double-screen display method of the present invention also includes：
Step S01, generates the second drive signal；
Step S02, determines whether to start extendable display screen 21 according to the second drive signal.Wherein, startup expansion is being determined
In the case of exhibition display screen 21, execution step S11 and step S21；In the case where not actuated extendable display screen 21 is determined, then
Terminate, the step is not shown in the figure 7.
Step S21, generates enabling signal；
Step S22, enabling signal is exported to the input interface 22 in Double-Screen Display System；
Step S23, the second control unit 23 controls the startup of extendable display screen 21 according to enabling signal
In the embodiment of the present invention, in the case of startup extendable display screen 21 is only determined in step S02, step is just performed
Rapid S11, it is possible to further control after the completion of extendable display screen 21 starts, the first drive signal of regeneration is carried out to extension
The regulation of the display brightness of display screen 21.
Alternatively, in the case where input interface 22 is MIPI input interfaces, the double-screen display method of the present invention also includes：
In execution step S02 and determine startup extendable display screen 21 in the case of, control conversion chip 15 initialization.
Alternatively, as shown in figure 8, in the double-screen display method of the present invention, the control initialization step of conversion chip 15 includes：
Step S31, judges whether that driving is stated conversion chip 15 and initialized according to the second drive signal.Wherein, judging
In the case of second drive signal does not drive conversion chip 15 initialized, execution step S32；Judging the drive of the second drive signal
Execution step S33 in the case of dynamic conversion chip 15 is initialized；
Whether step S32, judgement receives the duration of the second drive signal more than preset duration. wherein, judge to receive
Duration to the second drive signal more than in the case of preset duration, execution step S33；Judge to receive the second drive signal
Duration be no more than preset duration in the case of, continue to monitor receiving the duration of the second drive signal, the step is in fig. 8
It is not shown.
Step S33, initializes conversion chip 15.
Further, after execution step S33, the double-screen display method of the present invention also includes：Step S34, by figure to be played
As data conversion is into MIPI view data, and now, step S14 is：MIPI view data and brightness regulated signal are exported
Input interface 22 in Double-Screen Display System.
In embodiments of the present invention, view data to be played is exported to the input in Double-Screen Display System in step S14
Before interface, need to pre-process view data to be played, alternatively, preprocessing process is as follows：
First, view data to be played is stored in memory cell 17 according to the broadcast format of main display 11；Then,
Three control units 18 obtain view data to be played from memory cell 17, and control main display 11 and show picture number to be played
Video flowing is formed according to this.It should be noted that whether the 3rd control unit 18 obtains picture number to be played from memory cell 17
According to being that the instruction sent by the operating system of main display device 1 is determined.
Meanwhile, 19 receiving device loading unit of the 4th control unit 16 send corresponding control signal, it is determined that read or
Person does not read the view data to be played in memory cell 17, and when view data to be played is read, to HDMI output interface
14 outputs view data to be played.It should be noted that the 4th control unit 19 whether read it is to be played in memory cell 17
View data is the corresponding control letter that the instruction that sent by the operating system of main display device 1 and equipment loading unit 16 send
Number together decide on.
It should be noted that main display 11, equipment loading unit 16, memory cell 17, the 3rd control unit 18 and
Contact between 4th control unit 19 has been described in above-described embodiment one, and here is omitted.
Alternatively, in alternative embodiment of the present invention, double-screen display method also includes：In execution step S02 and determine and open
In the case of dynamic extendable display screen 21, control HDMI output interface 14 disconnects, also, completes initialization in conversion chip 15
Afterwards, control HDMI output interface 14 to connect.
Double-Screen Display System and the computer program of double-screen display method that the embodiment of the present invention is provided, including depositing
The computer-readable recording medium of program code is stored up, the instruction that described program code includes can be used to perform previous methods enforcement
Method described in example, implements and can be found in embodiment of the method, will not be described here.
Those skilled in the art can be understood that, for convenience and simplicity of description, the system of foregoing description
With the specific work process of device, the corresponding process in preceding method embodiment is may be referred to, be will not be described here.
In addition, in the description of the embodiment of the present invention, unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
If the function is realized and as independent production marketing or when using using in the form of SFU software functional unit, can be with
In being stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words
The part contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be individual
People's computer, server, or network equipment etc.) perform all or part of step of each embodiment methods described of the invention.
And aforesaid storage medium includes：USB flash disk, portable hard drive, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outward " be based on orientation shown in the drawings or position relationship, merely to
Be easy to description the present invention and simplify description, rather than indicate or imply indication device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.
Additionally, term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying phase
To importance.
Finally it should be noted that：Embodiment described above, specific embodiment only of the invention, to illustrate the present invention
Technical scheme, rather than a limitation, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this
It is bright to be described in detail, it will be understood by those within the art that：Any those familiar with the art
The invention discloses technical scope in, it still can modify to the technical scheme described in previous embodiment or can be light
Change is readily conceivable that, or equivalent is carried out to which part technical characteristic；And these modifications, change or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of embodiment of the present invention technical scheme, should all cover the protection in the present invention
Within the scope of.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of Double-Screen Display System, it is characterised in that include：Main display device and extension display device, the main display fills
Put including main display, driver element, the first control unit and HDMI output interface, the extension display device includes that extension is aobvious
Display screen, input interface and the second control unit, wherein,
The driver element is used to generate the first drive signal, wherein, first drive signal is used to determine whether that driving is right
The extendable display screen carries out brightness regulation；
First control unit is connected with the driver element, and described first for receiving the driver element output drives
Dynamic signal, and judging that first drive signal meets the brightness regulation bar that brightness regulation is carried out to the extendable display screen
In the case of part, then brightness regulated signal is generated, and the brightness regulated signal is exported to the HDMI output interface；
The HDMI output interface is connected with first control unit, for by view data to be played and the institute that receives
Brightness regulated signal output is stated to the input interface；
The input interface is connected by data line with the HDMI output interface, for sending out to the extendable display screen
The view data described to be played for receiving is sent, and the brightness regulation letter for receiving is sent to second control unit
Number；
Second control unit is connected with the input interface, for adjusting the extension according to the brightness regulated signal
The display brightness of display screen.
2. system according to claim 1, it is characterised in that first drive signal includes pwm control signal, its
In, the dutycycle of the pwm control signal is used to determine whether to carry out brightness regulation to the extendable display screen.
3. system according to claim 2, it is characterised in that
The driver element is additionally operable to generate the second drive signal；
First control unit is additionally operable to receive second drive signal of the driver element output, described in judging
In the case that second drive signal meets the entry condition for driving the extendable display screen to start, then enabling signal is generated, and to
The HDMI output interface exports the enabling signal；
The HDMI output interface is additionally operable to the enabling signal for receiving output to the input interface, so that described defeated
Incoming interface by enabling signal output to second control unit, wherein, second control unit receive it is described
After enabling signal, the startup of the extendable display screen is controlled.
4. system according to claim 3, it is characterised in that the input interface is MIPI input interfaces, the master shows
Display screen and the extendable display screen are MIPI display screens；
The main display device also includes conversion chip, and the conversion chip is arranged at the HDMI output interface and the input
Between interface, for obtaining the view data described to be played of HDMI output interface output, and by the image to be played
Data conversion into MIPI view data, so that the MIPI view data to be sent out to the extendable display screen by the input interface
Send；
The conversion chip is also connected with first control unit, first control unit be additionally operable to judge it is described
In the case that second drive signal meets the entry condition for driving the extendable display screen to start, entering for the conversion chip is controlled
Row initialization.
5. system according to claim 4, it is characterised in that
First control unit is additionally operable to judging the second drive signal satisfaction driving extendable display screen startup
Entry condition in the case of, judge whether to drive the conversion chip to initialize according to second drive signal；If sentenced
Break and the driving conversion chip initialization, then first control unit controls the initialization of the conversion chip；If sentenced
Break and do not drive conversion chip initialization, then first control unit judge to receive second drive signal when
It is long whether to be more than preset duration, if greater than the preset duration, then control the conversion chip and initialized.
6. system according to claim 5, it is characterised in that the HDMI output interface is A type HDMI output interfaces, institute
Stating No. 14 pins of A type HDMI output interfaces is used to receive the brightness regulated signal, or, the enabling signal.
7. system according to claim 6, it is characterised in that the main display device also includes：Equipment loading unit, institute
State equipment loading unit to be connected with the HDMI output interface, for monitoring whether the HDMI output interface is connected with the expansion
Exhibition display device, and corresponding control signal is sent according to monitoring result, wherein, corresponding control signal is for determination
It is no to export the view data to be played to the HDMI output interface.
8. system according to claim 7, it is characterised in that the main display device also includes：Memory cell, the 3rd control
Unit processed and the 4th control unit, wherein,
The view data to be played is stored in the memory cell according to the broadcast format of the main display；
3rd control unit is connected between the memory cell and the main display, for from the memory cell
Obtaining the view data to be played, and control the main display shows the view data to be played to form video flowing；
4th control unit be connected to the memory cell, the equipment loading unit and the HDMI output interface it
Between, the corresponding control signal for being sent according to the equipment loading unit determines reading or does not read the storage
View data described to be played in unit, and when the view data to be played is read, it is defeated to the HDMI output interface
Go out the view data to be played.
9. system according to claim 8, it is characterised in that first control unit is additionally operable to defeated to the HDMI
After outgoing interface output enabling signal, control the HDMI output interface and disconnect, also, monitoring that the conversion chip completes
After initialization, control the HDMI output interface and connect.
10. a kind of double-screen display method of the Double-Screen Display System based on any one of the claims 1 to 9, it is special
Levy and be, including：
Generate the first drive signal；
Determine whether to drive according to first drive signal and brightness regulation is carried out to the extendable display screen；
If it is judged that first drive signal meets the brightness regulation condition that brightness regulation is carried out to the extendable display screen,
Then generate brightness regulated signal；
View data to be played and the brightness regulated signal for generating output are connect to the input in the Double-Screen Display System
Mouthful, so that the input interface sends the brightness regulation for receiving to the second control unit in the Double-Screen Display System
Signal；
Second control unit after the brightness regulated signal is received, according to the brightness regulated signal adjust described in
The display brightness of extendable display screen.
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| CN106657842B (en) | 2019-08-20 |
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