CN103458053A - Data transmission method of audio and video collecting system applied to financial system - Google Patents
Data transmission method of audio and video collecting system applied to financial system Download PDFInfo
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- CN103458053A CN103458053A CN2013104235020A CN201310423502A CN103458053A CN 103458053 A CN103458053 A CN 103458053A CN 2013104235020 A CN2013104235020 A CN 2013104235020A CN 201310423502 A CN201310423502 A CN 201310423502A CN 103458053 A CN103458053 A CN 103458053A
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Abstract
The invention relates to a data transmission method of an audio and video collecting system applied to a financial system. The method includes the steps that step one, network signal strength is obtained; step two, when the network signal strength is 0 to -101dB, the third step is executed; when the network signal strength is smaller than -101dB, the fourth step is executed; step three A, whether retention data exist in a storage card and a high-speed cache is detected, if yes, a third step B is executed, and if not, a third step C is executed; step three B, the retention data in the high-speed cache are sent to a server through a network first, and audio and video screen data signals acquired by a mobile phone are written into the high-speed cache or a storer; step three C, the audio and video screen data signals acquired by the mobile phone are written into the high-speed cache and then are sent to the server; step four, an off-line mode is achieved, and the audio and video screen data signal data acquired by the mobile phone are written into the high-speed cache or the storage card. The data transmission method of the audio and video collecting system applied to the financial system is low in error rate and low in packet loss probability, and the code stream rate and the bandwidth are matched.
Description
Technical field
The present invention relates to a kind of data transmission method that is applied to the audio-video collection system of financial sector.
Background technology
Along with the develop rapidly of internet, remote monitoring, teleconference, video telephone etc. be take application that stream media technology is core and are developed into gradually the pith of internet application.The characteristics of Streaming Media are: data volume is large, the transmission time is long, it is many to take the network bandwidth, very high to the requirement of the aspects such as bandwidth, delay, packet loss and shake of network.And the retransmission mechanism that Transmission Control Protocol adopts so the transmission of current internet data adopts the nothing of UDP to connect forwarding mechanism, does not just have quality assurance to increasing the weight of the generation of these problems in the streaming media process.The transmission of Streaming Media has the requirement of real-time, and simple buffering area mechanism also is not enough to the requirement of processing delay and shake.Frame frequency that error code and packet loss cause is lost the degradation that can cause image quality, and stream rate and bandwidth not mate cause unsmooth be also a reason that causes the image quality reduction.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, provide that a kind of error rate is low, packet loss is low and the data transmission method of the audio-video collection system that is applied to financial sector that stream rate and bandwidth are complementary.
The object of the present invention is achieved like this: a kind of data transmission method that is applied to the audio-video collection system of financial sector, and described method includes following steps:
Step 1, obtain network signal intensity:
Mobile phone obtains its on-site network signal intensity, be that mobile phone terminal passes through android development interface acquisition network signal intensity, interface under the wifi pattern is getRssi, and the interface under the GSM pattern is getGsmSignalStrength, and the interface under the CDMA pattern is getCdmaDbm;
Step 2, network signal intensity is detected:
When network signal intensity is: during 0 ~-101 dB, enter the line model of step 3;
When network signal intensity is: while being less than-101, enter the off-line mode of step 4;
Step 3, line model:
Mobile phone is set up and is linked by wireless network with the server of long-range setting, enters subsequently step 3 A;
In step 3 A, detection of stored card and high-speed cache, whether the data of delay are arranged, if there are the data of delay to enter step 3 B, if enter step 3 C without being detained data;
Delay data in step 3 B, high-speed cache first are sent to server by network, simultaneously in the data write cache in storage card, in mobile phone obtains simultaneously sound screen data-signal write cache or memory, after the delay data are sent, enter step 3 C;
Be sent to server by network after step 3 C, sound screen data-signal write cache that mobile phone is obtained;
Step 4, off-line mode:
In the audio, video data signal data write cache that mobile phone obtains, in high-speed cache, data are write when full, and data are write in storage card, now by network, server are not sent to data.
Compared with prior art, the invention has the beneficial effects as follows:
One, conventional simple buffer pool size is little, in the area of some dtr signal, may in off-line mode, cause buffering area completely can not store for a long time; The mode that the present invention combines with buffering area and storage card (SD), guarantee the memory capacity that buffering area enlarges when sending the high speed of data;
Two, conventional transmission means is, when data, in the situation that signal is very weak while outwards sending, sends overtime packet and directly just has been dropped, and has now both wasted flow and has also lost bag; The present invention adopts the TCP transmitting, and system directly enters off-line mode in swinging of signal, no longer outwards sends data, while waiting until signal stabilization, sends again, fully improves the utilance of bandwidth when reducing to greatest extent packet loss and the error rate; Also, just because of this consideration, the data of local cache can be many than usual, and simple core buffer just not too can meet the demand of high memory space; When network recovery is normal, these delay data that are trapped in high-speed cache and storage card will be sent to server, guarantee the reliability of transfer of data simultaneously.
The accompanying drawing explanation
Fig. 1 is that a kind of data transmission method transmission of video that is applied to the audio-video collection system of financial sector of the present invention is controlled flow diagram.
The schematic diagram of the transmission of video data flow that Fig. 2 is a kind of audio-video collection system that is applied to financial sector of the present invention.
Embodiment
Referring to Fig. 1, a kind of data transmission method that is applied to the audio-video collection system of financial sector the present invention relates to, described method includes following steps:
Step 1, obtain network signal intensity:
Mobile phone obtains its on-site network signal intensity, be that mobile phone terminal passes through android development interface acquisition network signal intensity, interface under the wifi pattern is getRssi, and the interface under the GSM pattern is getGsmSignalStrength, and the interface under the CDMA pattern is getCdmaDbm;
Step 2, network signal intensity is detected:
When network signal intensity is: during 0 ~-101 dB, enter the line model of step 3;
When network signal intensity is: during be less than-101dB, enter the off-line mode of step 4;
Step 3, line model:
Mobile phone is set up and is linked by wireless network with the server of long-range setting, enters subsequently step 3 A;
In step 3 A, detection of stored card (as the SD card) and high-speed cache, whether (cache) has the data of delay, if there are the data of delay to enter step 3 B, if enter step 3 C without being detained data;
Step 3 B, delay data in high-speed cache first are sent to server by network, simultaneously the data in storage card are by the priority of access time write cache successively, the sound screen data-signal that mobile phone obtains simultaneously (obtains video data signal by camera, obtain voiceband data signal by microphone) in write cache or memory (when high-speed cache has been write when full, in the sound screen data-signal write memory that mobile phone obtains, when high-speed cache is not write when full, the sound screen data-signal that mobile phone obtains writes direct in high-speed cache), after the delay data are sent, enter step 3 C,
Be sent to server by network after step 3 C, sound screen data-signal write cache that mobile phone is obtained;
Step 4, off-line mode:
In the sound screen data signal data write cache that mobile phone obtains, in high-speed cache, data are write when full, and data are write in storage card, now by network, server are not sent to data;
In the process of above-mentioned steps three transmission of data signals, speed bit stream and the network signal intensity of signal transmission are proportional---and when network signal is better, the speed bit stream that frame number is set after larger, larger frame number compression is also larger; When network signal is poor, reduce frame number, also just reduced speed bit stream, although this time, the transmission of video smoothness can reduce, can guarantee not frame losing, and keep the picture integrality; And before whole transmission, can test in advance, by the mode of regulating the frame frequency number, will have the speed bit stream under ray mode to be tested, obtain the speed bit stream tolerance interval of transmission of video.
Claims (1)
1. a data transmission method that is applied to the audio-video collection system of financial sector, it is characterized in that: described method includes following steps:
Step 1, obtain network signal intensity:
Mobile phone obtains its on-site network signal intensity;
Step 2, network signal intensity is detected:
When network signal intensity is: during 0 ~-101 dB, enter the line model of step 3;
When network signal intensity is: during be less than-101dB, enter the off-line mode of step 4;
Step 3, line model:
Mobile phone is set up and is linked by wireless network with the server of long-range setting, enters subsequently step 3 A;
In step 3 A, detection of stored card and high-speed cache, whether the data of delay are arranged, if there are the data of delay to enter step 3 B, if enter step 3 C without being detained data;
Delay data in step 3 B, high-speed cache first are sent to server by network, simultaneously in the data write cache in storage card, in mobile phone obtains simultaneously sound screen data-signal write cache or memory, after the delay data are sent, enter step 3 C;
Be sent to server by network after step 3 C, sound screen data-signal write cache that mobile phone is obtained;
Step 4, off-line mode:
In the sound screen data signal data write cache that mobile phone obtains, in high-speed cache, data are write when full, and data are write in storage card, now by network, server are not sent to data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013104235020A CN103458053A (en) | 2013-09-17 | 2013-09-17 | Data transmission method of audio and video collecting system applied to financial system |
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| CN2013104235020A CN103458053A (en) | 2013-09-17 | 2013-09-17 | Data transmission method of audio and video collecting system applied to financial system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104601946A (en) * | 2014-12-05 | 2015-05-06 | 柳州市瑞蚨电子科技有限公司 | Wireless intelligent video monitoring system |
| CN109686072A (en) * | 2018-12-28 | 2019-04-26 | 合肥英泽信息科技有限公司 | A kind of data collection system for disaster monitoring point |
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| CN101902524A (en) * | 2010-07-13 | 2010-12-01 | 上海未来宽带技术及应用工程研究中心有限公司 | Mobile phone capable of being taken as video source of live video system and audio-video transmission method |
| CN102098304A (en) * | 2011-01-25 | 2011-06-15 | 北京天纵网联科技有限公司 | Method for simultaneously recording and uploading audio/video of mobile phone |
| CN102468989A (en) * | 2010-11-11 | 2012-05-23 | 腾讯科技（深圳）有限公司 | Method and system for processing network data |
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- 2013-09-17 CN CN2013104235020A patent/CN103458053A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101902524A (en) * | 2010-07-13 | 2010-12-01 | 上海未来宽带技术及应用工程研究中心有限公司 | Mobile phone capable of being taken as video source of live video system and audio-video transmission method |
| CN102468989A (en) * | 2010-11-11 | 2012-05-23 | 腾讯科技（深圳）有限公司 | Method and system for processing network data |
| CN102098304A (en) * | 2011-01-25 | 2011-06-15 | 北京天纵网联科技有限公司 | Method for simultaneously recording and uploading audio/video of mobile phone |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104601946A (en) * | 2014-12-05 | 2015-05-06 | 柳州市瑞蚨电子科技有限公司 | Wireless intelligent video monitoring system |
| CN109686072A (en) * | 2018-12-28 | 2019-04-26 | 合肥英泽信息科技有限公司 | A kind of data collection system for disaster monitoring point |
| CN109686072B (en) * | 2018-12-28 | 2021-01-19 | 合肥英泽信息科技有限公司 | Data acquisition system for disaster monitoring points |
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Application publication date: 20131218 |
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