CN106601187B - Display control unit, control card, display device and its control method - Google Patents
Display control unit, control card, display device and its control method Download PDFInfo
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- CN106601187B CN106601187B CN201710097525.5A CN201710097525A CN106601187B CN 106601187 B CN106601187 B CN 106601187B CN 201710097525 A CN201710097525 A CN 201710097525A CN 106601187 B CN106601187 B CN 106601187B
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- signal
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
Abstract
The invention discloses a kind of display control unit, control card, display device and its control methods, the display control unit includes: drive module, for output drive signal, and after the completion of showing the driving signal output of picture for a frame, signal is completed in output display；And control module, for receive frame synchronizing signal and display complete signal, according to frame synchronizing signal and display complete signal control the drive module whether export for next frame show picture driving signal.Thus it not only avoids the picture between consecutive frame from interfering with each other, and picture in time of frame period is made to may continue to normally show, optimize display effect.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of display control unit, control card, display device and its controls
Method processed.
Background technique
In existing light emitting diode (Light Emitting Diode, LED) display panel control system, LED is aobvious
Show that panel is usually to be spliced by multiple LED boxes, and each LED box is spliced by multiple LED lamp panels.Each
LED box is also configured with reception card, receives card by winding displacement and exports image drive signals to LED lamp panel to drive LED lamp panel
Display.Each LED display panel control system is equipped with sending card, is based on specific transport protocol, and sending card is by input
Video source is sent to reception card with fixed data format, receives card for the video source of input and is more completely shown in LED display surface
On plate.
But there are deviations between the clock due to receiving the clock and sending card on card, in order to avoid the picture between consecutive frame
Face interferes with each other, and after former frame display is completed, a later frame can reserve one section of buffer time before showing, in this period,
There is no picture element signal appearance, is referred to as frame period this period.
Since the time in frame period not will do it the display of any picture, interior LED display panel is all during this period
Light emitting diode is in closed state.If being taken pictures using high speed camera to the LED display panel for having frame period, frame period can be anti-
A plurality of concealed wire should be corresponded to, image quality and viewing effect are affected on the photo taken.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of display control unit, control card, display device and its controls
Method can interfere with each other to avoid the picture between consecutive frame, and picture can normally be shown within the time of frame period.
According to the first aspect of the invention, a kind of display control unit is provided, comprising: drive module is used for output driving
Signal, and signal is completed in output display after the completion of showing the driving signal output of picture for a frame；And control
Module completes signal for receiving frame synchronizing signal and display, completes signal according to frame synchronizing signal and display and control the drive
Whether dynamic model block exports the driving signal that picture is shown for next frame.
Preferably, after the control module receives frame synchronizing signal from external video card, judge whether to receive and come from
Signal is completed in the display of drive module, if it is, output shows the driving signal of picture for next frame, is otherwise continued to output
The driving signal of picture is shown for present frame.
Preferably, the display control unit is to receive card.
According to the second aspect of the invention, a kind of control card is provided, comprising: display control dress described in any of the above embodiments
It sets；Sending card, the sending card are used to the vision signal of input being supplied to the display control unit frame by frame；And video card,
The video card is for providing frame synchronizing signal.
According to the third aspect of the invention we, a kind of display device is provided, comprising: control card described above；Display panel,
For being shown according to the driving signal from display control unit.
It preferably, further include picture output device, the picture output device is used to provide video letter for the control card
Number.
Preferably, the display panel is LED display panel.
According to the fourth aspect of the invention, a kind of control method of display device is provided, comprising: output drive signal and
Signal is completed in output display after the completion of showing the driving signal output of picture for a frame；And according to frame synchronizing signal and
Display completes signal and judges whether that output shows the driving signal of picture for next frame.
Preferably, after receiving frame synchronizing signal, judge whether that receiving display completes signal, if it is, output
Otherwise the driving signal that picture is shown for next frame continues to output the driving signal that picture is shown for present frame.
Display control unit, control card, display device and its control method provided by the invention, not only avoid consecutive frame
Between picture interfere with each other, and picture in time of frame period is made to may continue to normally show, optimizes display effect.
Detailed description of the invention
By referring to the drawings to the description of inventive embodiments, above-mentioned and other purposes of the invention, feature and excellent
Point will be apparent from, in the accompanying drawings:
Fig. 1 shows the structure chart of the display control unit of first embodiment of the invention offer.
Fig. 2 shows the structure charts for the control card that second embodiment of the invention provides.
Fig. 3 shows the structure chart of the display device of third embodiment of the invention offer.
Fig. 4 shows the flow chart of the control method of the display device of fourth embodiment of the invention offer.
Specific embodiment
Below based on embodiment, present invention is described, but the present invention is not restricted to these embodiments.Under
Text is detailed to describe some specific detail sections in the datail description of the embodiment of the present invention, comes to those skilled in the art
Say that the present invention can also be understood completely in the description of part without these details.It is well known in order to avoid obscuring essence of the invention
Method, process, process do not describe in detail.
In various figures, identical element, which is adopted, will be referred to by like reference numbers expression.For the sake of clarity, in attached drawing
Various pieces are not necessarily to scale.In addition, certain well known parts may be not shown in figure.Flow chart, frame in attached drawing
Figure illustrates the system, method, possible System Framework, the function and operation of circuit of the embodiment of the present invention, the box of attached drawing
And box sequence is used only to the process and step of better illustrated embodiment, without should be in this, as to inventing limit itself
System.
Fig. 1 shows the structure chart of the display control unit of first embodiment of the invention offer.As shown, the present invention first
The display control unit 110 that embodiment provides is, for example, to receive card, and the display control unit 110 includes 111 He of drive module
Control module 112, the drive module 111 are used for output drive signal, and in the driving for showing picture for a frame
Signal is completed in output display after the completion of signal output, and the control module 112 receives what external video card (not shown in figure 1) provided
Frame synchronizing signal, and signal is completed according to the frame synchronizing signal and the display and controls whether the drive module 111 exports
The driving signal of picture is shown for next frame.Specifically, when the control module 112 receives frame synchronization letter from external video card
After number, if signal is completed in the display for receiving the output of drive module 111, control module 112 controls drive module 111 and exports needle
The driving signal of picture is shown to next frame, otherwise, control module 112 controls drive module 111 and continues to output for present frame
Show the driving signal of picture.
Fig. 2 shows the structure charts for the control card that second embodiment of the invention provides.As shown, second embodiment of the invention
The control card 100 of offer includes sending card 120, display control unit 110 and video card 130.Wherein, the display control unit
110 be, for example, the display control unit that first embodiment of the invention provides, and structure, which please refers to, above implements the present invention first
The explanation of example, is not repeated to describe here.The sending card 120 is based on specific transport protocol, by vision signal with fixation
Data format be supplied to the display control unit 110 frame by frame, the video card 130 is used for the display control unit 110
Frame synchronizing signal is provided, the frame synchronizing signal is the longer pulse signal of Duration Ratio, is indicate aobvious to former frame
Show the end of picture scanning, and show the beginning of picture scanning to a new frame, the frame synchronizing signal may continue a line or several
Capable sweep time.
Fig. 3 shows the structure chart of the display device of third embodiment of the invention offer.As shown, third of the present invention is implemented
The display device 400 that example provides includes picture output device 200, control card 100 and display panel 300.Wherein, the control
Card 100 is, for example, the control card that second embodiment of the invention provides, and structure please refers to above to second embodiment of the invention
Illustrate, is not repeated to describe here.The picture output device 200 is for example including selected from computer, tablet computer and hand
Any one of machine, for providing vision signal for the control card 100, the control card 100 is according to the vision signal
The display panel 300 provides driving signal, controls the display panel 300 and realizes that picture is shown, the display panel 300
For example LED display panel.
Fig. 4 shows the flow chart of the control method of the display device of fourth embodiment of the invention offer.As shown, this hair
The control method for the display device that bright fourth embodiment provides includes step S401-S404.
In step S401, the driving signal that picture is shown for present frame is sent.
In step S402, judge whether to receive frame synchronizing signal.
If not, thening follow the steps S401, continue to send the driving signal that picture is shown for present frame.
If so, thening follow the steps S403.
In step S403, judge whether that receiving display completes signal.
If not, thening follow the steps S401, continue to send the driving signal that picture is shown for present frame.
If so, thening follow the steps S404, the driving signal that picture is shown for next frame is sent.
Display control unit, control card, display device and its control method provided by the invention, compared with the existing technology and
Speech, not only avoids the picture between consecutive frame from interfering with each other, and it is normally aobvious to may continue to picture
Show, optimizes display effect.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
It is as described above according to the embodiment of the present invention, these embodiments details all there is no detailed descriptionthe, also not
Limiting the invention is only the specific embodiment.Obviously, as described above, can make many modifications and variations.This explanation
These embodiments are chosen and specifically described to book, is principle and practical application in order to better explain the present invention, thus belonging to making
Technical field technical staff can be used using modification of the invention and on the basis of the present invention well.The present invention is only by right
The limitation of claim and its full scope and equivalent.
Claims (7)
1. a kind of display control unit characterized by comprising
Drive module is used for output drive signal, and after the completion of showing the driving signal output of picture for a frame
Signal is completed in output display；And
Control module completes signal for receiving frame synchronizing signal and display, completes signal control according to frame synchronizing signal and display
Make whether the drive module exports the driving signal that picture is shown for next frame,
Wherein, after the control module receives frame synchronizing signal from external video card, judge whether to receive from driving mould
Signal is completed in the display of block, if it is, output shows the driving signal of picture for next frame, is otherwise continued to output to be directed to and be worked as
Previous frame shows the driving signal of picture.
2. display control unit according to claim 1, which is characterized in that the display control unit is to receive card.
3. a kind of control card, comprising:
Display control unit of any of claims 1-2；
Sending card, the sending card are used to the vision signal of input being supplied to the display control unit frame by frame；And
Video card, the video card is for providing frame synchronizing signal.
4. a kind of display device characterized by comprising
Control card described in claim 3；
Display panel, for being shown according to the driving signal from display control unit.
5. display device according to claim 4, which is characterized in that it further include picture output device, the video output
Equipment is used to provide vision signal for the control card.
6. display device according to claim 4, which is characterized in that the display panel is diode displaying face
Plate.
7. a kind of control method of display device characterized by comprising
Output drive signal and output display completion signal after the completion of being directed to a frame and showing the driving signal output of picture；
And
Signal, which is completed, according to frame synchronizing signal and display judges whether that output is directed to the driving signal that next frame shows picture,
Wherein, after receiving frame synchronizing signal, judge whether that receiving display completes signal, if it is, output is directed to
Next frame shows the driving signal of picture, otherwise continues to output the driving signal that picture is shown for present frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710097525.5A CN106601187B (en) | 2017-02-22 | 2017-02-22 | Display control unit, control card, display device and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710097525.5A CN106601187B (en) | 2017-02-22 | 2017-02-22 | Display control unit, control card, display device and its control method |
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| Publication Number | Publication Date |
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| CN106601187A CN106601187A (en) | 2017-04-26 |
| CN106601187B true CN106601187B (en) | 2019-03-15 |
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| CN201710097525.5A Active CN106601187B (en) | 2017-02-22 | 2017-02-22 | Display control unit, control card, display device and its control method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109147650B (en) * | 2017-06-28 | 2021-01-15 | 西安诺瓦星云科技股份有限公司 | Display synchronization control method and device and display screen control system |
| CN113689815A (en) * | 2021-08-23 | 2021-11-23 | Tcl华星光电技术有限公司 | Drive circuit and display device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002116743A (en) * | 2000-08-03 | 2002-04-19 | Sharp Corp | Method for driving liquid crystal display device |
| EP1598806A1 (en) * | 2004-05-19 | 2005-11-23 | Vastview Technology Inc. | Method and device for driving liquid crystal display |
| JP5227502B2 (en) * | 2006-09-15 | 2013-07-03 | 株式会社半導体エネルギー研究所 | Liquid crystal display device driving method, liquid crystal display device, and electronic apparatus |
| CN102438117B (en) * | 2010-09-29 | 2014-06-11 | 联芯科技有限公司 | Image data acquisition method for camera on handheld terminal and handheld terminal |
| CN106448614A (en) * | 2015-08-04 | 2017-02-22 | 联发科技（新加坡）私人有限公司 | Electronic device and picture refresh rate control method |
| CN106095366B (en) * | 2016-06-07 | 2019-01-15 | 北京小鸟看看科技有限公司 | A kind of method, apparatus and virtual reality device shortening picture delay |
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