CN102426514B - Synchronous displaying method and device for large-screen spliced wall - Google Patents
Synchronous displaying method and device for large-screen spliced wall Download PDFInfo
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Abstract
The invention provides a synchronous displaying method for a large-screen spliced wall. The method comprises the following steps of: segmenting an input signal into blocks, wherein adjacent blocks have overlapped areas; respectively carrying out pixel sampling on the overlapped area of each block; with one of the blocks as a reference block, detecting whether the reference block is synchronous with the block adjacent to the reference block or not, if not, carrying out synchronization adjustment; with the block subjected to frame synchronization as a new reference block, detecting whether the new reference block is synchronous with the block adjacent to the new reference block or not, if not, carrying out synchronization adjustment; repeating the above operation till the synchronization of all the blocks is finished; and finally outputting the signals of the blocks synchronously. The invention also provides a synchronous displaying device for a large-screen spliced wall, which can be used for displaying images on the large-screen spliced wall synchronously when input signals are not synchronous, and user experience is improved further.
Description
Technical field
The present invention relates to combination and show control field, be specifically related to a kind of large-screen splicing wall synchronous display method and device.
Background technology
At present in large screen display field, screen number may reach up to a hundred, and a vision signal is divided into polylith, because the video transmission path of process is different, the nuance in processing mode, shows synchronous problem so ubiquity between different display screens.Adopt at present unified clock mode synchronous, or adopt between video card and add synchronous cable to carry out synchronously, but these synchronously all can not solve input video inner own with regard to nonsynchronous situation under, large-size screen monitors show nonsynchronous problem, poor user experience.
Summary of the invention
The object of the invention is to propose a kind of synchronous method of large screen display, can when input signal itself is asynchronous, picture synchronization is presented on large-screen splicing wall, promote user and experience.
The technical scheme adopting based on above-mentioned purpose:
A large-screen splicing wall synchronous display method, comprises step:
(1) input signal is carried out to piecemeal, adjacent piece contains overlapping region;
(2) the overlapping region data of each piece are carried out respectively to pixel sampling;
(3) using one of them piecemeal as reference block;
(4) detection reference piece is adjacent whether the pixel of present frame of identical overlapping region of piece is poor is more than or equal to predetermined pixel value, if so, obtain this adjacent block, with the pixel of the first predetermined frame number before and after the present frame position of the identical overlapping region of reference block as the first reference pixel; Described the first reference pixel is compared with the pixel of present frame this identical overlapping region of adjacent block with reference block, when the pixel of the pixel of the first predetermined frame and the present frame of reference block is poor while being less than described predetermined value, described the first predetermined frame is adjusted into the present frame of this adjacent block;
(5), using the piece that just completes frame synchronization as new reference block, return to described step (4);
(6) repeating said steps (5), until complete the frame synchronization adjustment of all piecemeals;
(7) synchronous output minute block signal.
The present invention proposes a kind of synchronous method of large screen display, the piecemeal that first input signal is contained to overlapping region; Gather the content of overlapping region; Carry out the mode of interframe content contrast, utilize the identical overlapping region of adjacent block to carry out content comparison; When the content of consecutive frame is asynchronous with selected reference frame, before and after consecutive frame present frame position, in the content of certain frame number, search the frame identical with reference frame content; Then the present frame that is consecutive frame by this framing control shows; Automatic synchronization shows Ge road video content, has solved when input signal itself is asynchronous, and the nonsynchronous problem of picture disply, promotes user and experience.
The object of the invention is to propose the synchronous device of a kind of large screen display, can when input signal itself is asynchronous, picture synchronization is presented on large-screen splicing wall, promote user and experience.
The technical scheme adopting based on above-mentioned purpose:
A large-screen splicing wall synchronous display apparatus, comprising:
Signal divides module unit, and for input signal is carried out to piecemeal, adjacent piece contains overlapping region;
Data sampling unit, carries out respectively pixel sampling for the overlapping region data to each piece;
Reference block is selected unit, for using one of them piecemeal as reference block;
Synchronous detection unit, is adjacent for detection of reference block whether the pixel of present frame of identical overlapping region of piece is poor is more than or equal to predetermined pixel value; If so, notify acquiring unit to carry out respective operations;
Described acquiring unit, for the pixel of obtaining the first predetermined frame number before and after the present frame position of this adjacent block and the identical overlapping region of reference block as the first reference pixel;
Comparing unit, for comparing with the pixel of present frame this identical overlapping region of adjacent block described the first reference pixel, reference block, when the pixel of the pixel of described the first predetermined frame and the present frame of reference block is poor while being less than described predetermined pixel value, notice adjustment unit carries out respective operations;
Described adjustment unit, for being adjusted into described the first predetermined frame the present frame of this adjacent block;
The selected unit of described reference block selects the piece that has just completed frame synchronization as new reference block, notify described synchronous detection unit, described acquiring unit, described comparing unit and described adjustment unit to carry out respective operations, until complete the frame synchronization adjustment of all piecemeals;
Output unit, for synchronous output minute block signal.
The present invention proposes the synchronous device of a kind of large screen display, the piecemeal that first input signal is contained to overlapping region; Gather the content of overlapping region; Carry out the mode of interframe content contrast, utilize the identical overlapping region of adjacent block to carry out content comparison; When the content of consecutive frame is asynchronous with selected reference frame, before and after consecutive frame present frame position, in the content of certain frame number, search the frame identical with reference frame content; Then the present frame that is consecutive frame by this framing control shows; Automatic synchronization shows Ge road video content, has solved when input signal itself is asynchronous, and the nonsynchronous problem of picture disply, promotes user and experience.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the inventive method;
Fig. 2 is the schematic diagram of a kind of signal piecemeal in the inventive method;
Fig. 3 is the schematic diagram that in the inventive method, reference block is synchronizeed while judging with adjacent block;
Fig. 4 is a structural representation of apparatus of the present invention;
Fig. 5 is a specific embodiment schematic diagram of the present invention.
Embodiment
For ease of understanding the present invention, below in conjunction with accompanying drawing, be described in detail.
Please refer to Fig. 1, the present invention proposes a kind of large-screen splicing wall synchronous display method, comprise step:
101, input signal is carried out to piecemeal;
Input signal is carried out to piecemeal, and adjacent piece contains overlapping region.
102, piecemeal is carried out to image data;
The overlapping region data of each piece are carried out respectively to pixel sampling.
103, selected reference piece;
Using one of them piecemeal as reference block.
Whether 104, detect adjacent block synchronizes with reference block;
Detection reference piece is adjacent whether the pixel of present frame of identical overlapping region of piece is poor is more than or equal to predetermined value, if so, carry out step 105; If not, carry out step 107.
105, synchronously adjust;
Obtain this adjacent block, with the pixel of the first predetermined frame number before and after the present frame position of the identical overlapping region of reference block as the first reference pixel; By this first reference pixel, reference block, compare with the pixel of present frame this identical overlapping region of adjacent block, when the pixel of the first predetermined frame,, the pixel of the present frame of reference block is poor while being less than predetermined value, the first predetermined frame is adjusted into the present frame of this adjacent block.
106, selected reference piece again;
The piece that just completes frame synchronization is returned to step 104 as new reference block.
107, whether other all piecemeals synchronize with reference block;
Judge whether other all piecemeals synchronize with reference block, if so, carry out 108 steps; If not, return to 104 steps.
108, synchronous output minute block signal.
The present invention proposes a kind of synchronous method of large screen display, the piecemeal that first input signal is contained to overlapping region; Gather the content of overlapping region; Carry out the mode of interframe content contrast, utilize the identical overlapping region of adjacent block to carry out content comparison; When the content of consecutive frame is asynchronous with selected reference frame, before and after consecutive frame present frame position, in the content of certain frame number, search the frame identical with reference frame content; Then the present frame that is consecutive frame by this framing control shows; Automatic synchronization shows Ge road video content, has solved when input signal itself is asynchronous, and the nonsynchronous problem of picture disply, promotes user and experience.
While carrying out the piecemeal of input signal, according to user's requirement, carry out; User's requirement, for example: every 2 combinations show that subelement shows same shunting sign, or each combination shows that subelement shows a shunting sign.
As a kind of specific embodiment, please refer to Fig. 2, each display unit of the combination of 2*2 shows a road unlike signal; A method for signal piecemeal, for A piece and B piece, its overlapping region scope is: the region that A1A2B1B3 represents; For A piece and C piece, its overlapping region scope is: the region that A3A4B2B4 represents; For B piece and D piece, its overlapping region scope is: the region that B2B4A7A8 represents; For C piece and D piece, its overlapping region scope is: the region that B1B3A5A6 represents.
When carrying out the pixel sampling of overlapping region, use sampling sample mode, minor increment sampling sample mode for example, can improve the efficiency of simultaneous display.
When carrying out the choosing of reference block for the first time, can choose any in the demonstration subelement of combination; When the demonstration subelement number of combination is a lot, can choose one of them that be positioned at combination centre position and show that subelement is as selected for the first time reference block, can complete faster the whether synchronous detection of all piecemeals like this, save time, raise the efficiency.
For step 104, while synchronously detecting, a kind of preferred implementation is: take Fig. 2 as example, selected reference piece is A piece; When reference block is adjacent piece B piece and synchronously detects, establishing on A piece with the pixel of one of them position of present frame of the overlapping region of B piece is Ya (i, j); On B piece, be Yb (i, j) with the pixel of one of them position of present frame of the overlapping region of A piece; Its pixel is poor is:
D(i，j)＝Yb(i，j)-Ya(i，j)；
When D (i, j) is more than or equal to predefined value D0, be judged to be A, B piece present frame is asynchronous; When D (i, j) is less than predefined value D0, be judged to be A, B piece present frame is synchronous; Meanwhile, in order to improve the accuracy of synchronous detection, can by A piece with poor the adding up of all pixels of the present frame same position of the overlapping region of B piece; If the poor accumulated value of its pixel is more than or equal to predetermined value (being different from D0), judge asynchronous; If the poor accumulated value of its pixel is less than predetermined value, judge synchronous.
To above-mentioned 105 steps, in the pixel at adjacent block the first predetermined frame number, while still not finding the frame of synchronizeing with the present frame of reference block, on the original basis, further expand the frame number of the participation comparison of adjacent block, improve synchronous probability:
When the pixel of the pixel of the first predetermined frame and the present frame of reference block is poor while being more than or equal to predetermined value, obtain the pixel of the second predetermined frame number before and after this adjacent block present frame position as the second reference pixel;
The second reference pixel is compared with the pixel of present frame this identical overlapping region of adjacent block with reference block successively, if the pixel of the pixel of the second predetermined frame and the present frame of reference block is poor while being less than predetermined value, the second predetermined frame is adjusted into the present frame of this adjacent block.
As a kind of specific embodiment, A piece and the B piece of take in Fig. 2 are example, set and take A piece as reference block, and A piece is asynchronous with B piece; Concrete adjustment process, please refer to Fig. 3; The present frame of A piece is F1; The present frame of B piece is F2-3; By the front and back of the present frame of B piece 2 frames (the first predetermined frame number) respectively with the present frame comparison of A piece, still there is no to find the frame F2 of synchronizeing with the present frame of A piece; So with 4 frames (the second predetermined frame number) before and after the present frame of B piece respectively with the present frame comparison of A piece, due to front and back 2 frames of the present frame of B piece with the present frame of A piece mistake relatively, so no longer compare, only carry out front and back the 3rd, 4 frames of present frame of B piece and the comparison of A piece present frame; Before present frame through relatively finding B piece, the 3rd frame F2 is synchronizeed with the present frame of A piece, so the 3rd frame (the second predetermined frame) F2 before the present frame of B piece is adjusted into the present frame of B piece.
The first predetermined frame number, the first predetermined frame, the second predetermined frame number and the second predetermined frame are different, and the first predetermined frame number and the second predetermined frame number are the quantity of frame, and the first predetermined frame and the second predetermined frame are concrete frames; Meanwhile, the scope of the second predetermined frame number is greater than the first predetermined frame number.
To above-described embodiment, the pixel of the second predetermined frame number is compared with the pixel of present frame this identical overlapping region of adjacent block with reference block successively, still do not find the frame of synchronizeing with reference block present frame, system reports an error, and stops synchronous adjustment.
Introduce device of the present invention below, please refer to Fig. 4, a kind of large-screen splicing wall synchronous display apparatus, comprising:
Signal divides module unit T1, and for input signal is carried out to piecemeal, adjacent piece contains overlapping region;
Data sampling unit T2, carries out respectively pixel sampling for the overlapping region data to each piece;
Reference block is selected unit T3, for using one of them piecemeal as reference block;
Synchronous detection unit T4, is adjacent for detection of reference block whether the pixel of present frame of identical overlapping region of piece is poor is more than or equal to predetermined pixel value; If so, notify acquiring unit T5 to carry out respective operations;
Acquiring unit T5, for the pixel of obtaining the first predetermined frame number before and after the present frame position of this adjacent block and the identical overlapping region of reference block as the first reference pixel;
Comparing unit T6, for comparing with the pixel of present frame this identical overlapping region of adjacent block this first reference pixel, reference block, when the pixel of the pixel of the first predetermined frame and the present frame of reference block is poor while being less than predetermined pixel value, notice adjustment unit T7 carries out respective operations;
Adjustment unit T7, for being adjusted into the first predetermined frame the present frame of this adjacent block;
The selected unit T3 of reference block selects the piece that has just completed frame synchronization as new reference block, and notice synchronous detection unit T4, acquiring unit T5, comparing unit T6 and adjustment unit T7 carry out respective operations, until complete the frame synchronization adjustment of all piecemeals;
Output unit T8, for synchronous output minute block signal.
The present invention proposes the synchronous device of a kind of large screen display, the piecemeal that first input signal is contained to overlapping region; Gather the content of overlapping region; Carry out the mode of interframe content contrast, utilize the identical overlapping region of adjacent block to carry out content comparison; When the content of consecutive frame is asynchronous with selected reference frame, before and after consecutive frame present frame position, in the content of certain frame number, search the frame identical with reference frame content; Then the present frame that is consecutive frame by this framing control shows; Automatic synchronization shows Ge road video content, has solved when input signal itself is asynchronous, and the nonsynchronous problem of picture disply, promotes user and experience.
Wherein, when signal divides the piecemeal that module unit T1 carries out input signal, according to user's requirement, carry out, for example: every 2 combinations show that subelement shows same shunting sign, or each combination shows that subelement shows a shunting sign.
Data acquisition unit T2, when carrying out the pixel sampling of overlapping region, is used sampling sample mode, and minor increment sampling sample mode for example can improve the efficiency of simultaneous display.
Reference block chosen module T3, when carrying out the choosing of reference block for the first time, can choose any piecemeal in the demonstration subelement of combination.When the demonstration subelement number of combination is a lot, can choose one of them that be positioned at combination centre position and show that subelement is as selected for the first time reference block, can complete faster the whether synchronous detection of all piecemeals like this, save time, raising efficiency.
When the pixel of carrying out comparing unit T6 compares, if poor predetermined pixel value, the raising synchronous probability of being more than or equal to of the pixel of the pixel of the first predetermined frame and the present frame of reference block; Can do following improvement:
Notify pixel that acquiring unit T5 obtains the second predetermined frame number before and after this adjacent block present frame position as the second reference pixel, wherein the second predetermined frame number is greater than the first predetermined frame number;
Comparing unit T6 compares with reference block the pixel of the second predetermined frame number successively with the pixel of present frame this identical overlapping region of adjacent block, if the pixel of the present frame of the second pre-reference pixel and reference block is poor while being less than predetermined pixel value, notice adjustment unit T7 is adjusted into the second predetermined frame the present frame of this adjacent block.
Introduce a specific embodiment of the present invention below, please refer to Fig. 5, the combination of a 5*7, it shows that subelement has respectively label (1,2,3,4,5 and 6); Synchronous in order to complete fast, while choosing reference block for the first time, the demonstration subelement that the label of choosing combination center section is 1 is reference block; Now, the adjacent block of reference block is that label is 2 demonstration subelement; While synchronously detecting, the pixel value that the reference block (the demonstration subelement that label is 1) gathering is adjacent to the identical overlapping region of piece compares: after the demonstration subelement that the demonstration subelement that is 2 by label is 1 with label is synchronizeed, again selected reference piece, the demonstration subelement that is 2 by label is elected new reference block as, its adjacent block is the demonstration subelement of label 3, carries out synchronous detection and synchronous adjustment; After the demonstration subelement that the demonstration subelement that is 3 by label is 2 with label is synchronizeed, the demonstration subelement that selected label is 3 is again new reference block, and its adjacent block is the demonstration subelement of label 4, carries out synchronous detection and synchronous adjustment; After the demonstration subelement that the demonstration subelement that is 4 by label is 3 with label is synchronizeed, the demonstration subelement that selected label is 4 is again new reference block, and its adjacent block is the demonstration subelement of label 5, carries out synchronous detection and synchronous adjustment; After the demonstration subelement that the demonstration subelement that is 5 by label is 4 with label is synchronizeed, the demonstration subelement that selected label is 5 is again new reference block, and its adjacent block is the demonstration subelement of label 6, carries out synchronous detection and synchronous adjustment; And then complete the synchronous of whole combination.
Above embodiment of the present invention, does not form limiting the scope of the present invention.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present invention.
Claims (10)
1. a large-screen splicing wall synchronous display method, is characterized in that, comprises step:
(1) input signal is carried out to piecemeal, adjacent piece contains overlapping region;
(2) the overlapping region data of each piece are carried out respectively to pixel sampling;
(3) using one of them piecemeal as reference block;
(4) detection reference piece is adjacent whether the pixel of present frame of identical overlapping region of piece is poor is more than or equal to predetermined value, if so, obtain this adjacent block, with the pixel of the first predetermined frame number before and after the present frame position of the identical overlapping region of reference block as the first reference pixel; By described the first reference pixel, reference block, compare with the pixel of present frame this identical overlapping region of adjacent block, when the pixel of the pixel of the first predetermined frame and the present frame of reference block is poor while being less than described predetermined value, described the first predetermined frame is adjusted into the present frame of this adjacent block;
(5), using the piece that just completes frame synchronization as new reference block, return to described step (4);
(6) repeating said steps (5), until complete the frame synchronization adjustment of all piecemeals;
(7) synchronous output minute block signal.
2. large-screen splicing wall synchronous display method according to claim 1, is characterized in that,
While carrying out the piecemeal of input signal, according to large-screen splicing wall, show subelement number, described input signal is divided into the piece of corresponding number.
3. large-screen splicing wall synchronous display method according to claim 1, is characterized in that,
The reference block of described step (3) is one of them demonstration subelement in large-screen splicing wall centre position.
4. large-screen splicing wall synchronous display method according to claim 1, is characterized in that,
In described step (2), the data of overlapping region are carried out to pixel sampling sampling.
5. according to the large-screen splicing wall synchronous display method described in claim 1 to 4 any one, it is characterized in that, in described step (4),
When the pixel of the pixel of the first predetermined frame and the present frame of described reference block is poor while being more than or equal to described predetermined value, obtain the pixel of this front and back, adjacent block present frame position the second predetermined frame number as the second reference pixel, wherein said the second predetermined frame number is greater than described the first predetermined frame number;
Described the second reference pixel is compared with the pixel of present frame this identical overlapping region of adjacent block with reference block successively, if the pixel of the pixel of the second predetermined frame and the present frame of described reference block is poor while being less than described predetermined pixel value, described the second predetermined frame is adjusted into the present frame of this adjacent block.
6. a large-screen splicing wall synchronous display apparatus, is characterized in that, comprising:
Signal divides module unit, and for input signal is carried out to piecemeal, adjacent piece contains overlapping region;
Data sampling unit, carries out respectively pixel sampling for the overlapping region data to each piece;
Reference block is selected unit, for using one of them piecemeal as reference block;
Synchronous detection unit, is adjacent for detection of reference block whether the pixel of present frame of identical overlapping region of piece is poor is more than or equal to predetermined pixel value; If so, notify acquiring unit to carry out respective operations;
Described acquiring unit, for the pixel of obtaining the first predetermined frame number before and after the present frame position of this adjacent block and the identical overlapping region of reference block as the first reference pixel;
Comparing unit, for comparing with the pixel of present frame this identical overlapping region of adjacent block described the first reference pixel, reference block, when the pixel of the pixel of described the first predetermined frame and the present frame of reference block is poor while being less than described predetermined value, notice adjustment unit carries out respective operations;
Described adjustment unit, for being adjusted into described the first predetermined frame the present frame of this adjacent block;
The selected unit of described reference block selects the piece that has just completed frame synchronization as new reference block, notify described synchronous detection unit, described acquiring unit, described comparing unit and described adjustment unit to carry out respective operations, until complete the frame synchronization adjustment of all piecemeals;
Output unit, for synchronous output minute block signal.
7. large-screen splicing wall synchronous display apparatus according to claim 6, is characterized in that,
When described signal divides the piecemeal that module unit carries out input signal, according to large-screen splicing wall, show subelement number, described input signal is divided into the piece of corresponding number.
8. large-screen splicing wall synchronous display apparatus according to claim 6, is characterized in that,
One of them demonstration subelement that described reference block selected cell is chosen large-screen splicing wall centre position is selected for the first time described reference block.
9. large-screen splicing wall synchronous display apparatus according to claim 6, is characterized in that,
Described data acquisition unit is to the pixel sampling of sampling.
10. according to the large-screen splicing wall synchronous display apparatus described in claim 6 to 9 any one, it is characterized in that,
Described comparing unit carries out pixel relatively time, if the pixel of the pixel of the first predetermined frame and the present frame of reference block is poor, is more than or equal to described predetermined value,
The pixel of notifying described acquiring unit to obtain this front and back, adjacent block present frame position the second predetermined frame number is greater than described the first predetermined frame number as wherein said the second predetermined frame number of the second reference pixel;
Described comparing unit compares with reference block described the second reference pixel successively with the pixel of present frame this identical overlapping region of adjacent block, if the pixel of the pixel of the second predetermined frame and the present frame of described reference block is poor while being less than described predetermined value, notify described adjustment unit described the second predetermined frame to be adjusted into the present frame of this adjacent block.
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| CN104811658B (en) * | 2014-12-26 | 2017-12-26 | 山东巨洋神州信息技术有限公司 | Image intelligent synchronization method based on optical fiber distributed type display system |
| CN106293558A (en) * | 2015-05-11 | 2017-01-04 | 佰路得信息技术(上海)有限公司 | A kind of realize the method and system that multimedia continuously displays |
| US10657859B2 (en) | 2015-06-12 | 2020-05-19 | Boe Technology Group Co., Ltd. | Testing method for splicing screens |
| CN104867432B (en) * | 2015-06-12 | 2017-08-25 | 京东方科技集团股份有限公司 | The method of testing and test device of display screen |
| CN105761705B (en) * | 2016-05-04 | 2019-05-07 | 南京洛菲特数码科技有限公司 | Screen wall synchronous display method and system |
| TWI652525B (en) | 2017-12-22 | 2019-03-01 | 友達光電股份有限公司 | Display device |
| CN110324609B (en) * | 2018-03-30 | 2021-07-09 | 杭州海康威视数字技术股份有限公司 | Method and device for detecting synchronism of output signals, electronic equipment and storage medium |
| CN111163312A (en) * | 2020-02-19 | 2020-05-15 | 北京仁光科技有限公司 | Signal source synchronous detection method |
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