CN104484149A - Offline playing method and device of LED display screen synchronous control system - Google Patents
Offline playing method and device of LED display screen synchronous control system Download PDFInfo
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- CN104484149A CN104484149A CN201510006793.2A CN201510006793A CN104484149A CN 104484149 A CN104484149 A CN 104484149A CN 201510006793 A CN201510006793 A CN 201510006793A CN 104484149 A CN104484149 A CN 104484149A
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- 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
- G06F3/1415—Digital output to display device ; Cooperation and interconnection of the display device with other functional units with means for detecting differences between the image stored in the host and the images displayed on the displays
Abstract
The invention relates to an offline playing method and device of an LED display screen synchronous control system. In one execution mode, the method comprises the steps that two adjacent frames of display data are compared, if the two frames of display data are not completely identical, the display data of the current frame are stored in a storage device, a storage address of the display data of the current frame is stored in a storage address list in the storage device, and if the two frames of display data are completely identical, a storage address of the display data of the previous frame is stored in the storage device and used as the storage address of the display data of the current frame. If the LED display screen synchronous control system is in an offline state, a receiving module generates a frame synchronization command, the current display progress of the offline display mode is transmitted to a subsequent receiving module through the frame synchronization command, the subsequent receiving module reads the address of the display data currently needing to be displayed from the local storage device, and then the display data in the address are obtained and displayed.
Description
Technical field
The present invention relates to field of LED display, particularly a kind of LED display synchronous control system off line player method and device.
Background technology
LED (Light Emitting Diode, light emitting diode) display screen technology, as novel display technique, is accepted by market gradually with its energy-saving and environmental protection, the advantage such as highlighted, thus is widely used in the fields such as city medium, urban transportation.The core control part of LED display is control system.Prior art, if when there is communication failure, LED display can show blank screen or rest on the last frame picture play all the time, causes playing unsuccessfully.Or the display data stored in playout storage, but play content duration is just subject to the quantitative limitation of display data, shows the size that data volume is then limited to the memory space of storer.Realize showing data user rate time off line is play to improve, the content duration that off line is play is elongated, and it is problem demanding prompt solution that off line played data amount increases.
Summary of the invention
In view of this, the invention provides a kind of LED display synchronous control system off line player method and device, effectively can improve the utilization factor of display data and the efficiency of off line broadcasting.
The invention provides a kind of LED display synchronous control system off line player method, described LED display synchronous control system comprises receiver module and LED display, said method comprising the steps of:
A two adjacent frame display data compare by (), judge that whether adjacent two frame display data are identical;
If b () present frame display data and former frame show data incomplete same, then present frame display data is stored to storer, and its memory address is stored in the memory address list in described storer, if it is identical that present frame display data and former frame show data, the memory address then former frame being shown data is stored in the memory address list in described storer, is used as the memory address of described present frame display data;
If c () described LED display synchronous control system is in off-line state, then described receiver module produces frame synchronization order, by described frame synchronization order, the current progress displaying of off-line display pattern is passed to follow-up receiver module, described follow-up receiver module reads the current address needing the display data of display from local storage, then the display data obtained in described address show in described LED display.
In one embodiment of the invention, described step (a) specifically comprises: after (a1) receiver module receives described display data, is compared by adjacent two frame data, judges that whether adjacent two frame display data are identical.
In one embodiment of the invention, described method also comprises, and is stored to by the first frame count in the memory address list in described storer, and described first frame count is used for recording the DISPLAY ORDER of described display data.
In one embodiment of the invention, describedly by described frame synchronization order, the current progress displaying of off-line display pattern is passed to follow-up receiver module and comprises: using described first frame count as frame synchronization command routing to follow-up receiver module.
In one embodiment of the invention, described step (a) specifically comprises:
(a2) in described main control system, judge that whether described adjacent two frame display data are identical;
Correspondingly, described step (b) comprising:
(b1) if to show data incomplete same for present frame display data and former frame, then record current display data and generate the corresponding frame index of current display data, and the corresponding frame index initial value of current display data is one, if it is identical that present frame display data and former frame show data, then former frame is shown the corresponding frame index value of data and add one;
(b2) the display data of record and corresponding frame index are sent to described receiver module;
(b3) the display data received are stored to described storer by described receiver module, and the second frame count that its memory address and corresponding frame index parse is stored in the memory address list in described storer, the corresponding broadcasting time of display data that described frame index sends for recording described main control system, described second frame count is used for recording the DISPLAY ORDER of described display data.
In one embodiment of the invention, describedly by described frame synchronization order, the current progress displaying of off-line display pattern is passed to follow-up receiver module and comprises: using described second frame count as described frame synchronization command routing to follow-up receiver module.
In one embodiment of the invention, described storer is nonvolatile memory.
In addition, the embodiment of the present invention also provides a kind of LED display synchronous control system off line playing device, and described device comprises:
Data Comparison module, for two adjacent frame display data being compared, judges that whether described two frame display data are identical;
Memory module, for the memory address of described display data and described display data is stored, comprise: if it is incomplete same to show data for present frame display data and former frame, then present frame display data is stored, and its memory address is carried out the list of storage formation memory address; Show data if also comprise for present frame display data and former frame identical, then memory address former frame being shown data is stored in described memory address list, is used as the memory address of described present frame display data;
Data disaply moudle, if be in off-line state for described LED display synchronous control system, then produce frame synchronization order, by described frame synchronization order, the current progress displaying of off-line display pattern is passed to follow-up receiver module, described follow-up receiver module reads the current address needing the display data of display from the data that this locality stores, then the display data obtained in described address show.
In one embodiment of the invention, described Data Comparison module also comprises: adjacent two frame data, after receiving described display data, are compared by the first contrast unit, judges that whether adjacent two frame display data are identical;
Described memory module also comprises: store for the first frame count is corresponded to the memory address list of described display data, and described first frame count is used for recording the DISPLAY ORDER of described display data;
Correspondingly, described data disaply moudle also for using described first frame count as described frame synchronization command routing to described follow-up receiver module.
Whether in one embodiment of the invention, described Data Comparison module also comprises: the second contrast unit, identical for first judging described adjacent two frame display data before transmission display data;
Described memory module also comprises, display data record unit, if it is incomplete same to show data for present frame display data and former frame, then record current display data and generate the corresponding frame index of current display data, and the corresponding frame index initial value of current display data is one, if it is identical that present frame display data and former frame show data, then former frame is shown the corresponding frame index value of data and add one; Data transmission unit is used for the display data of record and corresponding frame index to send to receiver module;
Described memory module also comprises, for described display data are stored, and the second frame count that its memory address and corresponding frame index parse is carried out the list of storage formation memory address, described frame index is used for recording the corresponding broadcasting time of described display data, and described second frame count is used for recording the DISPLAY ORDER of described display data;
Correspondingly, described data disaply moudle also for using described second frame count as described frame synchronization command routing to follow-up receiver module.
According to method and the device of the present embodiment, by only storing one time to identical display data, reaching the effect of storage one frame display multiframe, improve the utilization factor of display data and the efficiency of off line broadcasting.
For above and other object of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and coordinate institute's accompanying drawings, be described in detail below.
Accompanying drawing explanation
Fig. 1 is the described LED display synchronous control system structured flowchart in an embodiment.
A kind of LED display synchronous control system off line player method process flow diagram that Fig. 2 provides for the first embodiment.
A kind of LED display synchronous control system off line player method process flow diagram that Fig. 3 provides for the second embodiment.
Fig. 4 is data event memory schematic diagram in an example of method in the second embodiment.
A kind of LED display synchronous control system off line player method process flow diagram that Fig. 5 provides for the 3rd embodiment.
Fig. 6 is data event memory schematic diagram in an example of method in the 3rd embodiment.
A kind of LED display synchronous control system off line playing device structured flowchart that Fig. 7 provides for the 4th embodiment.
A kind of LED display synchronous control system off line playing device structured flowchart that Fig. 8 provides for the 5th embodiment.
A kind of LED display synchronous control system off line playing device structured flowchart that Fig. 9 provides for the 6th embodiment.
Embodiment
For further setting forth the present invention for the technological means that realizes predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to according to the specific embodiment of the present invention, structure, feature and effect thereof, be described in detail as follows.
Fig. 1 is the LED display synchronous control system structured flowchart in an embodiment.For LED display synchronous control system, it such as comprises main control system, sending module, receiver module and LED display, and main control system is connected with LED display with receiver module by sending module.Main control system is such as provided with Windows operating system, media playback software and terminal monitoring software.Terminal monitoring software such as configuring camera head and carrying out terminal data collection to obtain monitor data, such as comprises hardware status data and the physical parameter data of LED display at this monitor data; Hardware status data such as comprises sending module status data, receiver module status data, monitor card status data, and physical parameter data such as comprise LED display internal box supply voltage, whether humidity, rotation speed of the fan, chamber door close, the testing result data such as smog, temperature.
First embodiment
Fig. 2 shows a kind of LED display synchronous control system off line player method process flow diagram, described LED display synchronous control system comprises main control system, sending module, receiver module and LED display, as shown in Figure 2, the method for the present embodiment comprises the following steps:
Step S101, adjacent two frames display data to be compared, judge that whether adjacent two frames display data are identical.
Due to LED display playing pictures or lantern slide, may be the same in continuous print multiframe data.Such as, if adjacent two frame data are identical, then can not store rear frame data, when needing to show rear frame data, directly obtain former frame data and show.Then can store frame data and show two frame data.
It can be judged by described receiver module that described two adjacent frame display data compare, and also can be judged by described main control system.
If it is incomplete same that step S102 present frame display data and former frame show data, then present frame display data is stored to storer, and its memory address is stored in the memory address list in described storer, if it is identical that present frame display data and former frame show data, the memory address then former frame being shown data is stored in the memory address list in described storer, is used as the memory address of described present frame display data.
Further, described storer is nonvolatile memory.
Described display data are stored to described nonvolatile memory and form look-up table.Further, the memory address corresponding stored of frame count and described display data is also comprised to described nonvolatile memory.Described frame count is for recording the DISPLAY ORDER of display data.
In an example, when whole LED display synchronous control system normally works, record command is initiated by sending module, the display data that receiver module receiving front-end transmits, adjacent two frame display data compare, if present frame and former frame display data identical, then think present frame and former frame data consistent.In the nonvolatile memory that present frame is corresponding, memory address is the memory address of previous frame data.In an example, as shown in Figure 4, second frame display data T1,3rd frame display data T2,4th frame display data T3, display data are the same, therefore storing the data of T2 and T3 when data not stored in described nonvolatile memory, in addition sequence of addresses be the 1st, 2,3 frame time all preserve A1 address.
In another example, the work that described display data content can be judged is judged by described main control system.Due to LED display playing pictures or lantern slide, may be the same in continuous print multiframe data.And when recording, all be sent to receiver module by main control system, main control system carries out each frame data content judging to need to send before transmitting, and same number of frames is according to only sending once, and the multiplicity of repeating frame is recorded and is sent to receiver module in the lump.And then when storing data in described nonvolatile memory, same display data only stores one time.Carry out Data duplication according to every frame data multiplicity again when off line is play to read described display data and show, thus realize the compression of display data, transmission, storage and decompression display.
If the described LED display synchronous control system of step S103 is in off-line state, then described receiver module produces frame synchronization order, by described frame synchronization order, the current progress displaying of off-line display pattern is passed to follow-up receiver module, described follow-up receiver module reads the current address needing the display data of display from local storage, obtain the display data in address again, and control display in the corresponding viewing area of the LED display of carrying at described band.
If when described LED display synchronous control system is in off-line state, time off line is play, receiver module works voluntarily, reads the storage data in local nonvolatile memory.First receiver module 1 of LED display synchronous control system as shown in Figure 2 can produce field sync signal, by frame synchronization order, the frame count of current display is passed to follow-up receiver module.By described frame synchronization order, the current progress displaying of off-line display pattern is passed to follow-up receiver module.Each receiver module can according to the described frame count in frame synchronization order, in corresponding local nonvolatile memory, look-up table carries out the memory address obtaining the display data that present frame needs, and shows according to the display data that the memory address of the display data obtained reads in this address.In one embodiment, as shown in Figure 4, as we know from the figure the 1st, 2, the memory address of display data that 3 frames are corresponding is all A1, therefore the nonvolatile memory exported stores data is T1; Non-volatile memory addresses corresponding when the 4th frame time is A2, therefore the nonvolatile memory storage data exported are T4.
Further, describedly by described frame synchronization order, the current progress displaying of off-line display pattern is passed to follow-up receiver module and comprises: using described frame count as frame synchronization command routing to follow-up receiver module.
Second embodiment
Fig. 3 shows a kind of LED display synchronous control system off line player method process flow diagram, as shown in Figure 3, the present embodiment and the first embodiment similar, its difference is, described step S101 specifically comprises:
After step S1011, receiver module receive described display data, adjacent two frame data are compared, judge that whether adjacent two frame display data are identical.
In the method for the present embodiment, in receiver module, carry out adjacent two frame data compare.When adjacent two frame data are identical, then judge that two frame data are consistent, do not need repeated storage.
Such as, when described LED display synchronous control system normally works, sending module initiates record command, receiver module receives the display data that sending module transmits, adjacent two frame display data compare, if present frame display data is identical with former frame display data, be then judged as that present frame display data and former frame show data consistent.The nonvolatile memory memory address that present frame display data is corresponding is the memory address of described former frame display data.
If it is incomplete same that step S102 present frame display data and former frame show data, then present frame display data is stored to storer, and its memory address is stored in the memory address list in described storer, if it is identical that present frame display data and former frame show data, the memory address then former frame being shown data is stored in the memory address list in described storer, is used as the memory address of described present frame display data.
As shown in Figure 4, be data event memory schematic diagram in an example of the method for the present embodiment.In an example, as shown in Figure 4, second frame display data T1,3rd frame display data T2,4th frame display data T3, display data are the same, therefore storing the data of T2 and T3 when data not stored in described nonvolatile memory, in addition sequence of addresses be the 1st, 2,3 frame time all preserve A1 address.Such as, it is then incomplete same that display data T4 and former frame show data, is stored in described nonvolatile memory by display data T4, and preserve its memory address and extremely form look-up table in described nonvolatile memory.
The method of the present embodiment also comprises, and step S102a, is stored to the first frame count in described storer memory address list, and described first frame count is used for recording the DISPLAY ORDER of described display data.
Further, by the memory address corresponding stored of the first frame count and described display data to described nonvolatile memory, the first frame count described in described first frame count is used for recording the DISPLAY ORDER of described display data.As shown in Figure 4, in an example, described frame count record from 0 first frame display data storing order, the second frame display according to this 1 frame count carry out record order, after carry out record by that analogy.Described first frame count and the list of described display address data memory form corresponding lists, form the look-up table of described display data.
Further, by described frame synchronization order, the current progress displaying of off-line display pattern is passed to follow-up receiver module described in step S103 to comprise: using described first frame count as frame synchronization command routing to follow-up receiver module.
Described follow-up receiver module reads the current address needing the display data of display according to described first frame count from described local storage.
By judging the content of adjacent two frame display data to above-mentioned receiver module, repeating data does not carry out storage can effectively save nonvolatile memory capacity, makes the less data of storage but show more data.
3rd embodiment
Fig. 5 shows a kind of LED display synchronous control system off line player method process flow diagram, as shown in Figure 5, the present embodiment and the first embodiment similar, its difference is, described step S101 specifically comprises:
Step S1012, judge in described main control system described adjacent two frames display data whether identical.
When described LED display synchronous control system normally works, when recording, all be sent to receiver module by main control system, main control system before transmitting, first carry out each frame display data content judging to need to send, same number of frames is according to only sending once, and the multiplicity of repeating frame is recorded, and in the lump multiplicity is sent to described receiver module.
If it is incomplete same that step S1022 present frame display data and former frame show data, then record current display data and generate the corresponding frame index of current display data, and the corresponding frame index initial value of current display data is one, if it is identical that present frame display data and former frame show data, then former frame is shown the corresponding frame index value of data and add one.
The corresponding broadcasting time of display data that described frame index sends for recording described main control system, also can be described as frame index.When judging in described main control system described above, record described display data multiplicity identical with described frame index.
As shown in Figure 6, be data event memory schematic diagram in an example of the method for the present embodiment.Raw data T0, T1, T2, T3, T4 ... Tn, identical with display data T1 by judgement display data T2, the T3 of described main control system.Then display data T2, T3 are not sent in described receiver module by described main control system, the described frame index numerical value of corresponding display data T1 is 3, then represent that the memory address of display data T1 need be carried out three times and be stored, during display data T1 to be played, play three times.Pm shown in figure represents that m+1 position display data Tn's repeats display number of times.Wherein Am represents the memory address of m+1 position display data.Due to raw data T0, T1, T2, T3, T4 ... may there is identical data in Tn, therefore, it is appreciated that n is greater than m.Wherein Tn is the display data that m+1 frame is stored.
Step S1023, the display data of record and corresponding frame index are sent to described receiver module.
The display data received are stored to described storer by step S1024, described receiver module, and the second frame count that its memory address and corresponding frame index parse is stored in the memory address list in described storer, the corresponding broadcasting time of display data that described frame index sends for recording described main control system, described second frame count is used for recording the DISPLAY ORDER of described display data.
Now, to store mode shown in display data and the mode of memory address and Fig. 4 similar for the receiver module of the present embodiment.Here it is to be understood that judge that described frame index correspondence display data need the number of times play by resolving described frame index, the memory address of described display data is stored the identical number of times of described frame index numerical value by correspondence afterwards.Such as, as shown in Figure 6, the frame index numerical value that display data T1 is corresponding is 3, then the memory address of display data T1 is carried out three times and store, corresponding second frame count is respectively 1,2,3 (referring to Fig. 4).
Described second frame count and the list of described display address data memory form corresponding lists, form the look-up table of described display data.When described LED display synchronous control system is in off-line state, then by searching the address of display data in the look-up table in described nonvolatile memory, and then can show.
Further, describedly by described frame synchronization order, the current progress displaying of off-line display pattern is passed to follow-up receiver module and comprises: using described second frame count as described frame synchronization command routing to follow-up receiver module.
First judge whether described display data repeat by main control system, repeating data does not carry out repeating to send, and processes the data volume decreased in transmitting procedure like this, further, can also reduce the data volume stored in institute's nonvolatile memory.Data duplication reading displayed is carried out according to every frame data multiplicity again when off line is play, thus the compression of realization display data, transmission, storage and decompression display.
4th embodiment
The present embodiment provides a kind of LED display synchronous control system off line playing device, and as shown in Figure 7, described device comprises: Data Comparison module 401, memory module 402 and data disaply moudle 403.
Data Comparison module 401, for two adjacent frame display data being compared, judges that whether described two frame display data are identical.
Further, described Data Comparison module can in the receiver module in described LED display synchronous control system, also can in the treating apparatus in the main control system of institute's LED display synchronous control system, as a software program.
Memory module 402, for the memory address of described display data and described display data is stored, comprise: if it is incomplete same to show data for present frame display data and former frame, then present frame display data is stored, and its memory address is carried out the list of storage formation memory address; Show data if also comprise for present frame display data and former frame identical, then memory address former frame being shown data is stored in described memory address list, is used as the memory address of described present frame display data.
Data disaply moudle 403, if be in off-line state for described LED display synchronous control system, then produce frame synchronization order, by described frame synchronization order, the current progress displaying of off-line display pattern is passed to follow-up receiver module, described follow-up receiver module reads the current address needing the display data of display from the data that this locality stores, then the display data obtained in described address show.。
About other details of the device of above-described embodiment, also can consult the first embodiment further, no longer repeat at this.
5th embodiment
The present embodiment provides a kind of LED display synchronous control system off line playing device, the present embodiment and the 4th embodiment similar, its difference is, as shown in Figure 8, described Data Comparison module 401 also comprises:
Adjacent two frame data, after receiving described display data, are compared by the first contrast unit 4011, judge that whether adjacent two frame display data are identical.
Described memory module 402 also comprises: store for the first frame count is corresponded to the memory address list of described display data, and described first frame count is used for recording the DISPLAY ORDER of described display data.
Further, by described frame synchronization order, the current progress displaying of off-line display pattern is passed to follow-up receiver module described in described data disaply moudle 403 to comprise: described first frame count is transmitted as described frame synchronization order.
About other details of the device of above-described embodiment, also can consult the second embodiment further, no longer repeat at this.
6th embodiment
The present embodiment provides a kind of LED display synchronous control system off line playing device, the present embodiment and the 4th embodiment similar, its difference is, as shown in Figure 9,
Described Data Comparison module 401 also comprises: the second contrast unit 4012, first judges that whether described adjacent two frame display data are identical before transmission display data.
Described memory module 402 also comprises:
Display data record unit 4021, if it is incomplete same to show data for present frame display data and former frame, then records current display data and generate the corresponding frame index of current display data, and the corresponding frame index initial value of current display data is one; If it is identical that present frame display data and former frame show data, then former frame is shown the corresponding frame index value of data and add one.
Data transmission unit 4022, for sending to receiver module by the display data of record and corresponding frame index.
Described memory module 402 also comprises: storage unit 4023, for for described display data are stored, and the second frame count that its memory address and corresponding frame index parse is carried out the list of storage formation memory address, described frame index is used for recording the corresponding broadcasting time of described display data, and described second frame count is used for recording the DISPLAY ORDER of described display data.
Further, described data disaply moudle 403 also for using described second frame count as described frame synchronization command routing to follow-up receiver module.
About other details of the device of above-described embodiment, also can consult the 3rd embodiment further, no longer repeat at this.
In sum, the problem of more multiframe display data successfully can be play when the embodiment of the present invention plays display data for LED display synchronous control system off line, a kind of LED display synchronous control system off line player method and device are provided, whether identical by judging display data, only frame data are stored under identical circumstances, reach storage one frame data and but show multiframe data, the utilization factor of nonvolatile memory can be improved, improve the efficiency that off line is play.
In addition, the embodiment of the present invention also provides a kind of computer-readable recording medium, is stored with computer executable instructions, and above-mentioned computer-readable recording medium is such as nonvolatile memory such as CD, hard disk or flash memory.Above-mentioned computer executable instructions completes various operations in above-mentioned LED display synchronous control system off line player method for allowing computing machine or similar arithmetic unit.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. a LED display synchronous control system off line player method, described LED display synchronous control system comprises receiver module and LED display, it is characterized in that, said method comprising the steps of:
A two adjacent frame display data compare by (), judge that whether adjacent two frame display data are identical;
If b () present frame display data and former frame show data incomplete same, then present frame display data is stored to storer, and its memory address is stored in the memory address list in described storer, if it is identical that present frame display data and former frame show data, the memory address then former frame being shown data is stored in the memory address list in described storer, is used as the memory address of described present frame display data;
If c () described LED display synchronous control system is in off-line state, then described receiver module produces frame synchronization order, by described frame synchronization order, the current progress displaying of off-line display pattern is passed to follow-up receiver module, described follow-up receiver module reads the current address needing the display data of display from local storage, then the display data obtained in described address show in described LED display.
2. LED display synchronous control system off line player method as claimed in claim 1, it is characterized in that, described step (a) specifically comprises:
(a1) after receiver module receives described display data, adjacent two frame data are compared, judge that whether adjacent two frame display data are identical.
3. LED display synchronous control system off line player method as claimed in claim 1, it is characterized in that, described method also comprises:
Be stored to by first frame count in the memory address list in described storer, described first frame count is used for recording the DISPLAY ORDER of described display data.
4. LED display synchronous control system off line player method as claimed in claim 3, it is characterized in that, describedly by described frame synchronization order, the current progress displaying of off-line display pattern is passed to follow-up receiver module and comprises: using described first frame count as frame synchronization command routing to follow-up receiver module.
5. LED display synchronous control system off line player method as claimed in claim 1, described LED display synchronous control system also comprises main control system and sending module, it is characterized in that, described step (a) specifically comprises:
(a2) in described main control system, judge that whether described adjacent two frame display data are identical;
Correspondingly, described step (b) comprising:
(b1) if to show data incomplete same for present frame display data and former frame, then record current display data and generate the corresponding frame index of current display data, and the corresponding frame index initial value of current display data is one, if it is identical that present frame display data and former frame show data, then former frame is shown the corresponding frame index value of data and add one;
(b2) the display data of record and corresponding frame index are sent to described receiver module;
(b3) the display data received are stored to described storer by described receiver module, and the second frame count that its memory address and corresponding frame index parse is stored in the memory address list in described storer, the corresponding broadcasting time of display data that described frame index sends for recording described main control system, described second frame count is used for recording the DISPLAY ORDER of described display data.
6. LED display synchronous control system off line player method as claimed in claim 5, it is characterized in that, describedly by described frame synchronization order, the current progress displaying of off-line display pattern is passed to follow-up receiver module and comprises: using described second frame count as described frame synchronization command routing to follow-up receiver module.
7. the LED display synchronous control system off line player method as described in any one of claim 1 ~ 6, it is characterized in that, described storer is nonvolatile memory.
8. a LED display synchronous control system off line playing device, is characterized in that, described device comprises:
Data Comparison module, for two adjacent frame display data being compared, judges that whether described two frame display data are identical;
Memory module, for the memory address of described display data and described display data is stored, comprise: if it is incomplete same to show data for present frame display data and former frame, then present frame display data is stored, and its memory address is carried out the list of storage formation memory address; Show data if also comprise for present frame display data and former frame identical, then memory address former frame being shown data is stored in described memory address list, is used as the memory address of described present frame display data;
Data disaply moudle, if be in off-line state for described LED display synchronous control system, then produce frame synchronization order, by described frame synchronization order, the current progress displaying of off-line display pattern is passed to follow-up receiver module, described follow-up receiver module reads the current address needing the display data of display from the data that this locality stores, then the display data obtained in described address show.
9. LED display synchronous control system off line playing device as claimed in claim 8, it is characterized in that, described Data Comparison module also comprises:
Adjacent two frame data, after receiving described display data, are compared by the first contrast unit, judge that whether adjacent two frame display data are identical;
Described memory module also comprises: store for the first frame count is corresponded to the memory address list of described display data, and described first frame count is used for recording the DISPLAY ORDER of described display data;
Correspondingly, described data disaply moudle also for using described first frame count as described frame synchronization command routing to described follow-up receiver module.
10. LED display synchronous control system off line playing device as claimed in claim 8, is characterized in that,
Whether described Data Comparison module also comprises: the second contrast unit, identical for first judging described adjacent two frame display data before transmission display data;
Described memory module also comprises, display data record unit, if it is incomplete same to show data for present frame display data and former frame, then record current display data and generate the corresponding frame index of current display data, and the corresponding frame index initial value of current display data is one, if it is identical that present frame display data and former frame show data, then former frame is shown the corresponding frame index value of data and add one; Data transmission unit is used for the display data of record and corresponding frame index to send to receiver module;
Described memory module also comprises, for described display data are stored, and the second frame count that its memory address and corresponding frame index parse is carried out the list of storage formation memory address, described frame index is used for recording the corresponding broadcasting time of described display data, and described second frame count is used for recording the DISPLAY ORDER of described display data;
Correspondingly, described data disaply moudle also for using described second frame count as described frame synchronization command routing to follow-up receiver module.
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