CN102025983A - Data transmission processing method and system and corresponding light-emitting diode (LED) display system - Google Patents
Data transmission processing method and system and corresponding light-emitting diode (LED) display system Download PDFInfo
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Abstract
The invention discloses a data transmission processing method and system. The method comprises: A, data is compressed at a data transmitting terminal, the size of the compressed data is compared with the size of the original data, if the size of the compressed data is less than that of the original data, the compressed data is sent, otherwise the original data is sent; and B, at a data receiving terminal, the received original data is directly stored, and the received compressed data is decompressed and then stored. The system comprises the data transmitting terminal and the data receiving terminal, wherein the transmitting terminal is used for executing the step A, and the receiving terminal is used for executing the step B. The invention also discloses a light-emitting diode (LED) display system, comprising a display control module, an LED control panel, a memorizer and an LED display screen, wherein the display control module is taken as the data transmitting terminal in the method disclosed by the invention, and the LED control panel is taken as the data receiving terminal in the method disclosed by the invention. According to the invention, the transmission speed for displaying data in a low-cost display system and the operational performance can be improved.
Description
Technical field
The present invention relates to the transmission process technical field of electronics video data, relate in particular to a kind of data transmission processing method, system and use light-emitting diode (LED, the Light EmittingDiode) display system of this data transmission processing method.
Background technology
LED display also is known as electronic display or the word screen that wafts, and its principle is secretly to go out the information contents such as display text, picture, animation and video by LED dot matrix lamp pearl.LED display has brightness height, luminous even, characteristics such as power consumption is little, the life-span is long, weatherability is strong, good reliability, become the outstanding person in indoor outer flat panel display field in recent years rapidly, be widely used in field of information display such as outdoor traffic, billboard, public display screen.
At present, the common structure composition of the compact LED display system of industry use comprises: display control apparatus such as computer, LED control board and LED display.Has special-purpose display control module (as display control program) in the described display control apparatus, display control apparatus sends to the LED control board by modes such as serial communication, IP network communication, RFDC with video data, LED control board storage video data and output to LED display according to the display mode of video data and display structure and show.
But, along with people are familiar with the use of LED display system and more to the pursuit of display effect, the video data of big data quantities such as increasing picture is added in the video data, and its result who causes is: amount of communication data is increasing, and call duration time is also more and more longer simultaneously.Yet, owing to hardware cost need be controlled at lower level, the memory size of compact LED display system is very little usually, therefore the LED display system that adopts the available data transmission means is when the video data of transmission big data quantity, transmission speed and serviceability can obviously reduce, and have influenced the market competitiveness of LED display system greatly.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of data transmission processing method and system, with transmission speed and the serviceability that improves video data in the low-cost display system.
Another purpose of the present invention is to provide a kind of LED display system, to improve the data transmission bauds and the serviceability of LED display system.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of data transmission processing method may further comprise the steps:
A, at the data sending terminal packed data, the size of packed data and initial data relatively is if packed data less than initial data then send packed data, otherwise sends initial data;
B, at data receiver, the initial data that receives is directly stored, the packed data that receives elder generation decompress(ion) is stored again.
As a kind of preferred embodiment, described data sending terminal segmentation sends data, and described data receiver segmentation receives data.
As a kind of preferred embodiment, among the described step B, the described concrete grammar that the packed data elder generation decompress(ion) that receives is stored again comprises:
B1, judging whether the memory size of receiving terminal allows whole decompress(ion), is execution in step B2 then, otherwise execution in step B3;
B2, after receiving each segmentation packed data to whole decompress(ion) of packed data and storage, and finish this step B;
B3, segmentation decompress(ion) each section packed data and fragmented storage.
As a kind of preferred embodiment, describedly judge whether the memory size of receiving terminal allows the concrete grammar of whole decompress(ion) to be: relatively whether the length of the initial data of the packed data that is received is less than the free memory capacity, if then allow whole decompress(ion), otherwise do not allow whole decompress(ion).
As a kind of preferred embodiment, before steps A, this method further comprises: data transaction to be sent is become original dot matrix video data, is original dot matrix video data in initial data described in the steps A;
After step B, this method further comprises: read described original dot matrix video data and output to the LED display screen and show from memory.
A kind of data transmission processing system comprises data sending terminal and data receiver, wherein:
Described data sending terminal comprises compression module, comparison module and sending module; Described compression module is used for packed data; Described comparison module is used for the size of comparison packed data and initial data, if packed data less than initial data then trigger described sending module and send packed data, sends initial data otherwise trigger described sending module;
Described data receiver comprises receiver module, data type judge module and decompression module; Described data type judge module is used to the data type of judging that described receiver module is received, if initial data then directly is stored in described initial data in the memory, if packed data then triggers described this packed data of decompression module decompress(ion), again with the storage behind the decompress(ion) in memory.
As a kind of preferred embodiment, further comprise segmentation module in the described sending module, be used for data to be sent are carried out segmentation, carry out segmentation by sending module and send.
As a kind of preferred embodiment, the decompression module in the described data receiver further comprises decompress(ion) mode judge module, whole decompression module and segmentation decompression module;
Described decompress(ion) mode judge module is used to judge the packed data whether the free memory capacity of receiving terminal allows whole decompress(ion) to receive, and is then to trigger whole decompression module, otherwise triggers the segmentation decompression module;
Described whole decompression module is used for after receiving each segmentation packed data the whole decompress(ion) of packed data and passes to memory stores;
Described segmentation decompression module is used for segmentation decompress(ion) each section packed data and passes to the memory fragmentation storage.
A kind of LED display system comprises display control module, LED control board, memory and LED display, and described display control module comprises compression module, comparison module and sending module as the generation and the transmitting terminal of video data; Described compression module is used for packed data; Described comparison module is used for the size of comparison packed data and initial data, if packed data less than initial data then trigger described sending module and send packed data, sends initial data otherwise trigger described sending module;
Described LED control board comprises receiver module, data type judge module and decompression module as the receiving terminal of video data; Described data type judge module is used to the data type of judging that described receiver module is received, if initial data then triggers the directly described initial data of storage of described memory, if packed data then triggers described this packed data of decompression module decompress(ion), again by the data behind the described memory stores decompress(ion).
As a kind of preferred embodiment, further comprise segmentation module in the described sending module, be used for data to be sent are carried out segmentation, carry out segmentation by described sending module and send.
As a kind of preferred embodiment, the decompression module in the described LED control board further comprises decompress(ion) mode judge module, whole decompression module and segmentation decompression module; Described decompress(ion) mode judge module is used to judge the packed data whether memory size of LED control board allows whole decompress(ion) to receive, and is then to trigger described whole decompression module, otherwise triggers described segmentation decompression module; Described whole decompression module is used for after receiving each segmentation packed data the whole decompress(ion) of packed data and passes to memory stores; Described segmentation decompression module is used for segmentation decompress(ion) each section packed data and passes to the memory fragmentation storage.
The present invention has adopted a kind of adaptive compress technique in the data transmission and processing process, that is: judge that whether packed data is less than initial data, if transmitted data compressing then, otherwise the transmission initial data is owing to adopted this adaptive compress technique, so the present invention is during for the big data of data volumes such as needs transmission picture, can transmit the minimal data amount adaptively, thereby reduced amount of communication data, shortened call duration time, improved communication transfer speeds and serviceability.For the LED display system is this hardware cost is required very low display system, on the basis that does not increase hardware cost, just can promote the transmission speed and the serviceability of video data, satisfy the demand of the big data quantity transmission (for example picture video transfer of data) that increases day by day.
The present invention has also adopted segmentation compression transmission technology, the processing mode of whole decompress(ion) after data receiver can select the The data less to original data volume to receive the packed data of all segmentations, to the processing mode of bigger each segmentation difference decompress(ion) of The data of original data volume, thereby further promoted the response speed of communicating by letter.
In addition; because the present invention adopts compression algorithm that initial data has been carried out recompile; changed the composition structure of initial data; make packed data and initial data on data volume and form, have very big-difference; simultaneously because data sending terminal uses adaptive compression; existing packed data has not packed data again in the communication process; make the data of communication process present variation; and then make the prison hearer be difficult to by obtaining definite initial data analytical system; be equivalent to finish a re-encryption to initial data; finally reach the purpose of the composition structure of protection communication protocol of display system and video data, promoted safety of data transmission.
Description of drawings
Fig. 1 is the composition and the data flow schematic diagram of LED display system of the present invention;
Fig. 2 is the detail flowchart of data transmission processing method of the present invention at data sending terminal;
Fig. 3 is the detail flowchart of data transmission processing method of the present invention at data receiver;
Fig. 4 is that data transmission processing method of the present invention sends under the data conditions detail flowchart of data receiver in segmentation;
Fig. 5 is a kind of embodiment schematic diagram of data transmission processing system of the present invention;
Fig. 6 is for having the embodiment schematic diagram of segment transmissions function in the data transmission processing system of the present invention.
Embodiment
Below by specific embodiments and the drawings the present invention is described in further details.
The core technology scheme of data transmission processing method of the present invention is: adopt the compress technique packed data, and communication two ends make self-adaptive processing, that is: at the data sending terminal packed data, the size that compares packed data and initial data, if packed data is less than initial data then send packed data, otherwise send initial data; At data receiver, the initial data that receives is directly stored, the packed data elder generation decompress(ion) that receives is stored again.
The compression ratio of compression algorithm depends on the front and back correlation of data, so data sending terminal compresses the reduction that processing data afterwards can not guarantee data volume fully.In order to eliminate the drawback that compression back data volume improves, the data sending terminal among the present invention only sends the lower data of data volume.In like manner, data receiver need be made corresponding self-adaptive processing according to the data of communication link transmission, promptly exists not packed data processing and packed data to handle two processes, and unpressed initial data is directly stored, and packed data elder generation decompress(ion) is stored again.
In addition, in one embodiment, the processing mode of the present invention's whole decompress(ion) after data receiver can select the The data less to original data volume to receive the packed data of all segmentations, to the processing mode of bigger each segmentation difference decompress(ion) of The data of original data volume, thereby further promoted the response speed of communicating by letter.
The compression algorithm of routine of can selecting for use of the present invention is compressed data.But because the dot matrix display mode of LED display is very high to the requirement of data accuracy aspect, therefore in a kind of preferred embodiment, adopted a kind of lossless compression algorithm, to guarantee the consistency of data compression front and back.
Below by the Application Example of the present invention in the LED display system, data transmission method of the present invention and system are described.
Fig. 1 is the composition and the data flow schematic diagram of LED display system of the present invention.Referring to Fig. 1, this LED display system comprises: display control module 101, LED control board 102, memory 103 and LED display 104.Described display control module 101 is arranged in the display control apparatus 100, can be mounted in the program on the display control apparatus, and this display control apparatus 100 can be the equipment that computer, palmtop PC even mobile phone etc. have data-handling capacity.Described display control module 101 is the generation and the transmitting terminal of video data, can send compression and unpressed data to LED control board 102.Described LED control board 102 is the receiving terminal of video data, be used to receive the video data that display control module 101 transmission come, reply feedback information and other relevant parameter information to display control module 101, and the original dot matrix video data that will obtain stores memory 103 into, last LED control board 102 reading displayed data and output to LED display 104 and show from memory 103.
Fig. 2 is the detail flowchart of data transmission processing method of the present invention at data sending terminal.Referring to Fig. 2, this flow process specifically comprises:
Whether step 204, display control module judge packed data less than initial data, and promptly whether compression ratio less than 1, if execution in step 205 then, otherwise execution in step 206.
Fig. 3 is the detail flowchart of data transmission processing method of the present invention at data receiver.Described data receiver is the LED control board, and referring to Fig. 3, this flow process specifically comprises:
Whether the data that step 302, judgement are received are packed data, if then execution in step 303, otherwise, execution in step 305.Concrete determination methods can have multiple, for example most typically a kind ofly is, whether when data sending terminal sends data, adding in packet is the sign of packed data, for example identifies 1 and is packed data, and sign 0 is an initial data.
Fig. 4 is that data transmission processing method of the present invention sends under the data conditions detail flowchart of data receiver in segmentation.Referring to Fig. 4, this flow process specifically comprises:
Whether the segment data that step 402, judgement are received is packed data, if then execution in step 403, otherwise, execution in step 411.
Whether step 409, the current segmentation packed data of receiving of judgement are last segmentation packed data, if then execution in step 410, continue to receive next section segment data otherwise return step 401.Concrete herein determination methods is: the length of the segmentation packed data received of adding up, judge whether accumulated value equals the length of packed data, if equal then judge currently to have received last segmentation packed data, otherwise judge that current segmentation packed data is not last segmentation packed data.
Fig. 5 is a kind of embodiment schematic diagram of data transmission processing system of the present invention.This data transmission and processing can be carried out above-mentioned data transmission processing method.Referring to Fig. 5, this data transmission processing system comprises: data sending terminal 510 and data receiver 520, wherein:
Described data sending terminal 510 comprises compression module 511, comparison module 512 and sending module 513; Described compression module 511 is used for packed data; Described comparison module 512 is used for the size of comparison packed data and initial data, if packed data less than initial data then trigger described sending module 513 and send packed datas, sends initial data otherwise trigger described sending module 513.
Described data receiver 520 comprises receiver module 521, data type judge module 522 and decompression module 523; Described data type judge module 522 is used to the data type of judging that described receiver module 521 is received, if initial data (it is initial data or packed data that special byte representation is arranged in packet) then directly is stored in described initial data in the memory, if packed data then triggers described this packed data of decompression module 523 decompress(ion)s, again with the storage behind the decompress(ion) in memory.
Fig. 6 is for having the embodiment schematic diagram of segment transmissions function in the data transmission processing system of the present invention.Referring to Fig. 6, this data transmission processing system also further comprises segmentation module 614 in described sending module 613 except having the module described in Fig. 5, is used for data to be sent are carried out segmentation, and carries out the segmentation transmission by sending module 613.
As shown in Figure 6, the decompression module 623 in the described data receiver 620 further comprises decompress(ion) mode judge module 631, whole decompression module 632 and segmentation decompression module 633.Described decompress(ion) mode judge module 631 is used to judge the packed data whether the free memory capacity of receiving terminal allows whole decompress(ion) to receive, and is then to trigger whole decompression module 632, otherwise triggers segmentation decompression module 633; Described whole decompression module 632 is used for after receiving each segmentation packed data the whole decompress(ion) of packed data and passes to memory stores; Described segmentation decompression module 633 is used for segmentation decompress(ion) each section packed data and passes to the memory fragmentation storage.
The invention also discloses the LED display system of using above-mentioned data transmission processing system.Referring to Fig. 1, this LED display system comprises display control module 101, LED control board 102, memory 103 and LED display 104.
Described display control module 101 comprises Fig. 5 and the included content of data sending terminal shown in Figure 6 as the generation and the transmitting terminal of video data.Specifically comprise: compression module, comparison module and sending module; Described compression module is used for packed data; Described comparison module is used for the size of comparison packed data and initial data, if packed data less than initial data then trigger described sending module and send packed data, sends initial data otherwise trigger described sending module.Sending module in the described display control module further comprises segmentation module, is used for data to be sent are carried out segmentation, carries out segmentation by described sending module and sends.
Described LED control board 102 comprises Fig. 5 and the included content of data receiver shown in Figure 6 as the receiving terminal of video data.Specifically comprise receiver module, data type judge module and decompression module; Described data type judge module is used to the data type of judging that described receiver module is received, if initial data then triggers the directly described initial data of storage of described memory, if packed data then triggers described this packed data of decompression module decompress(ion), again by the data behind the described memory stores decompress(ion).
Decompression module in the described LED control board 102 further comprises decompress(ion) mode judge module, whole decompression module and segmentation decompression module; Described decompress(ion) mode judge module is used to judge the packed data whether memory size of LED control board allows whole decompress(ion) to receive, and is then to trigger described whole decompression module, otherwise triggers described segmentation decompression module; Described whole decompression module is used for after receiving each segmentation packed data the whole decompress(ion) of packed data and passes to memory stores; Described segmentation decompression module is used for segmentation decompress(ion) each section packed data and passes to the memory fragmentation storage.
Described LED control board 102 can read the video data in the memory 103 at last and export to LED display 104 and show.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (11)
1. a data transmission processing method is characterized in that, may further comprise the steps:
A, at the data sending terminal packed data, the size of packed data and initial data relatively is if packed data less than initial data then send packed data, otherwise sends initial data;
B, at data receiver, the initial data that receives is directly stored, the packed data that receives elder generation decompress(ion) is stored again.
2. method according to claim 1 is characterized in that, described data sending terminal segmentation sends data, and described data receiver segmentation receives data.
3. method according to claim 2 is characterized in that, among the described step B, the described concrete grammar that the packed data elder generation decompress(ion) that receives is stored again comprises:
B1, judging whether the memory size of receiving terminal allows whole decompress(ion), is execution in step B2 then, otherwise execution in step B3;
B2, after receiving each segmentation packed data to whole decompress(ion) of packed data and storage, and finish this step B;
B3, segmentation decompress(ion) each section packed data and fragmented storage.
4. method according to claim 3, it is characterized in that, describedly judge whether the memory size of receiving terminal allows the concrete grammar of whole decompress(ion) to be: relatively whether the length of the initial data of the packed data that is received is less than the free memory capacity, if then allow whole decompress(ion), otherwise do not allow whole decompress(ion).
5. method according to claim 1 is characterized in that,
Before steps A, this method further comprises: data transaction to be sent is become original dot matrix video data, is original dot matrix video data in initial data described in the steps A;
After step B, this method further comprises: read described original dot matrix video data and output to the LED display screen and show from memory.
6. a data transmission processing system is characterized in that, comprises data sending terminal and data receiver, wherein:
Described data sending terminal comprises compression module, comparison module and sending module; Described compression module is used for packed data; Described comparison module is used for the size of comparison packed data and initial data, if packed data less than initial data then trigger described sending module and send packed data, sends initial data otherwise trigger described sending module;
Described data receiver comprises receiver module, data type judge module and decompression module; Described data type judge module is used to the data type of judging that described receiver module is received, if initial data then directly is stored in described initial data in the memory, if packed data then triggers described this packed data of decompression module decompress(ion), again with the storage behind the decompress(ion) in memory.
7. data transmission processing system according to claim 6 is characterized in that, further comprises segmentation module in the described sending module, is used for data to be sent are carried out segmentation, carries out segmentation by sending module and sends.
8. data transmission processing system according to claim 6 is characterized in that, the decompression module in the described data receiver further comprises decompress(ion) mode judge module, whole decompression module and segmentation decompression module;
Described decompress(ion) mode judge module is used to judge the packed data whether the free memory capacity of receiving terminal allows whole decompress(ion) to receive, and is then to trigger whole decompression module, otherwise triggers the segmentation decompression module;
Described whole decompression module is used for after receiving each segmentation packed data the whole decompress(ion) of packed data and passes to memory stores;
Described segmentation decompression module is used for segmentation decompress(ion) each section packed data and passes to the memory fragmentation storage.
9. a LED display system comprises display control module, LED control board, memory and LED display, it is characterized in that,
Described display control module comprises compression module, comparison module and sending module as the generation and the transmitting terminal of video data; Described compression module is used for packed data; Described comparison module is used for the size of comparison packed data and initial data, if packed data less than initial data then trigger described sending module and send packed data, sends initial data otherwise trigger described sending module;
Described LED control board comprises receiver module, data type judge module and decompression module as the receiving terminal of video data; Described data type judge module is used to the data type of judging that described receiver module is received, if initial data then triggers the directly described initial data of storage of described memory, if packed data then triggers described this packed data of decompression module decompress(ion), again by the data behind the described memory stores decompress(ion).
10. LED display system according to claim 9 is characterized in that, further comprises segmentation module in the described sending module, is used for data to be sent are carried out segmentation, carries out segmentation by described sending module and sends.
11. LED display system according to claim 9 is characterized in that, the decompression module in the described LED control board further comprises decompress(ion) mode judge module, whole decompression module and segmentation decompression module;
Described decompress(ion) mode judge module is used to judge the packed data whether memory size of LED control board allows whole decompress(ion) to receive, and is then to trigger described whole decompression module, otherwise triggers described segmentation decompression module;
Described whole decompression module is used for after receiving each segmentation packed data the whole decompress(ion) of packed data and passes to memory stores;
Described segmentation decompression module is used for segmentation decompress(ion) each section packed data and passes to the memory fragmentation storage.
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| CN102025983B (en) | 2013-05-01 |
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