CN101511006A - Method for monitoring network audio and video, and network hard disk videocorder using the method - Google Patents
Method for monitoring network audio and video, and network hard disk videocorder using the method Download PDFInfo
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Abstract
The invention relates to a monitoring method of network audio and video and a net-hard-disk video recorder using the method. The method includes the steps: step one: a signal collection device is provided; step two: a multi-channel real-time monitoring data provided by a collection device of signals converted by a video and audio processing chip is provided; step three: the converted multi-channel monitoring data is transmitted to a DSP chip; step four: the DSP chip carries out respective H. 264 compression and coding of the received multi-channel monitoring data; step five: the remote transmission of the compressed and coded data is carried out through an Ethernet interface, a WiFi interface or an ADSL wan interface; step six: the compressed and coded data is locally stored; step seven: the compressed and coded data is locally played. The net-hard-disk video recorder comprises a DSP chip, video and audio processing chips which are respectively and electrically connected with the DSP chip, a net interface module and a function extension module. By adopting suitable video and audio processing chips and DSP chips, the invention simplifies hardware structures, reduces the cost and is high in stability and less in energy consumption. At the same time, the invention realizes the double implementation of local storage and remote transmission.
Description
Technical field
The present invention relates to the monitoring field, relate in particular to a kind of network audio-video monitoring method and use the network hard disk video recorder of this method.
Background technology
Along with the progress of society, video monitoring digitlization, networking, intellectuality have become a kind of development trend.Digital monitor system also progressively enters the large-scale commercial applications application stage, and video monitoring system has also experienced three epoch thereupon.
The first generation: simulation epoch.Video adopts coaxial cable to transmit with analog form, and carries out simulation process by main control system.
The second generation: half word epoch.Video transmits by multimedia main control system or DVR (DVR) with analog form employing coaxial cable and carries out digital processing and storage.
The third generation: digital epoch.Network Based, with the Digital Video Processing technology is core, comprehensive utilization photoelectric sensor, digitized image processing, embedded computer system, data transmission network, a kind of new digital supervisory control system of technology such as control and artificial intelligence automatically, typical product is exactly a network video server.
The network video server main application is mounted in the one-piece type webserver that transmits image and supervision on the network, does not need other computer, is utilizing standard web browser can see the high image quality image in real time on the internet.It is most crucial watch-dogs of digital epoch.As the network video server of the core watch-dog in digital epoch, the existing market application surface is more and more wider, and in 311 present safe city engineerings of China, network video server has obtained comprehensive utilization.
Yet, existing video frequency monitoring method and use the network video server of this method all to have much room for improvement.For example, network video server a plurality of media processing chips or the employing ASIC hardware encoding chips of adopting add that the more weak main control chip of some disposal abilities comes the suitable product of Bridging function more, product software and hardware very flexible like this, its hardware configuration relative complex, volume is big, the cost height, a little less than each chip chamber module cooperative, poor stability and power consumption height.On the other hand, be difficult to realize the dual realization of Long-distance Control and local control in the monitoring field.
Summary of the invention
The objective of the invention is to, a kind of network audio-video monitoring method is provided and uses the network hard disk video recorder of this method, by adopting suitable video and audio processing chip and dsp chip, simplify hardware configuration, reduce cost, and stability is high, and it is little to consume energy, and realizes the dual realization of local storage and remote transmission simultaneously.
For achieving the above object, the invention provides a kind of network audio-video monitoring method, comprising:
Step 1: signal collecting device is provided;
Step 2: provide and look the real-time monitor data of multichannel that Audio Processing chip switching signal collecting device provides;
Step 3: the multi-path monitoring data after will changing send a dsp chip to;
Step 4:DSP chip carries out H.264 compressed encoding respectively to the multi-path monitoring data that receive;
Step 5: the data behind the compressed encoding are carried out remote transmission, the data behind the described compressed encoding are carried out remote transmission by Ethernet interface, WiFi interface or ADSL Wide Area Network interface.
Wherein, also comprise step 6: the data behind the compressed encoding are carried out this locality store, in step 6, described audio, video data is by hard disk SATA interface, SD card or USB2.0 interface, with the data behind the described compressed encoding with the stored in file format of FAT32 in local storage medium.
Wherein, also comprise: step 7: the data behind the compressed encoding are carried out this locality play, in the step 7, the expansion interface that provides LCD to connect dsp chip is realized local the broadcast.
In the step 1, this signal collecting device is the camera of camera, band cloud platform, a kind of or its combination of warning inductor, so that the real-time monitor data on monitoring ground to be provided.
In the step 3, this DSP process chip is the high-performance highly integrated chip, be PNX1500, PNX1501 or PNX1700, it handles digital video signal and the I2S format signal that port receives the ITU656 form that the audio frequency and video process chip sends by audio frequency and video, it can support the input of multichannel video/audio signal simultaneously, in step 4, dsp chip can be handled the multichannel video/audio signal simultaneously.
A kind of network hard disk video recorder comprises: a slice dsp chip, and electrically connect dsp chip respectively look Audio Processing chip, Network Interface Module and function expanding module.
This monolithic dsp chip adopts the high-performance highly integrated chip, is PNX1500, PNX1501 or PNX1700, and this dsp chip is provided with a plurality of bus interface, network interface and function expansion interface, and it is built-in with the double-speed internal memory; The described Audio Processing chip of looking is connected on the described dsp chip by bus interface, described Network Interface Module is connected on the described dsp chip by network interface, and described function expanding module links to each other with described dsp chip by the function expansion interface corresponding with it respectively.
Described monolithic dsp chip has four the tunnel and looks the audio frequency input and output, four the tunnel report to the police imports, two the tunnel report to the police exports, described function expansion interface comprises local memory interface, WLAN (wireless local area network) WiFi access interface, the SATA interface, mobile TV receives extensive interface, the TFT driving interface, USB2.0 high speed backup interface, described function expanding module comprises local memory module, the alarm signal access module, the alarm linkage output module, remote control module, long-range picture recording module, the DVB access module, mobile TV expansion module, The Cloud Terrace camera lens control module, in the audio frequency bidirectional intercommunication module any one or a plurality of.
Also comprise power module, itself and dsp chip electrically connect, and this power module can connect the power supply of 12V power supply adaptor, and support ethernet technology.
Beneficial effect of the present invention: adopt network audio-video monitoring method provided by the invention and use the network hard disk video recorder of this method, make the application of DVR realize networking, and then reach the dual realization of local storage and remote transmission.Among the present invention, the application of DSP process chip, realized from hardware configuration simplify, efficiently to the simplification of software logic structure, efficient, thereby low cost, the interface of realizing product are abundanter, the purpose of high-performance, low-power consumption and high stability more; Simultaneously, the H.264 application of compression coding technology makes that video time is longer, Network Transmission is more smooth; Have, the application of USB2.0 high speed HOST interface is high speed USB equipment, provides interface as USB flash disk, USB portable hard drive again, thereby realizes the operations such as quick backup of data.Moreover the inventive method does not change the existing network framework, utilizes existing Ethernet transmission data standard and newest standards standard, and has kept the compatibility with existing Ethernet system and user, has reduced cost to greatest extent.
In order further to understand feature of the present invention and technology contents, see also following about detailed description of the present invention and accompanying drawing, yet accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for the utility model is limited.
Description of drawings
Below in conjunction with accompanying drawing,, will make technical scheme of the present invention and other beneficial effect apparent by the specific embodiment of the present invention is described in detail.
Fig. 1 is a network audio-video monitoring method schematic diagram of the present invention;
Fig. 2 is the structural representation of an embodiment of the network hard disk video recorder of use the inventive method.
Embodiment
Technological means and the decorative effect thereof taked for further setting forth the present invention are described in detail below in conjunction with the preferred embodiments of the present invention and accompanying drawing thereof.
As shown in Figure 1, be network audio-video monitoring method schematic diagram of the present invention.The inventive method comprises:
Step 3: the multi-path monitoring data after will changing send a dsp chip to.This DSP process chip is the high-performance highly integrated chip, for example PNX1500, PNX1501, PNX1700 etc., it handles digital video signal and the I2S format signal that port receives the ITU656 form that the audio frequency and video process chip sends by audio frequency and video, it can support the input of multichannel video/audio signal simultaneously, so only needs a dsp chip just can realize the input of multichannel video/audio signal in this step.I2S。Change the situation of the corresponding chip of one road signal in the prior art, not only simplified hardware configuration, reduced product cost simultaneously.
Step 4:DSP chip carries out H.264 compressed encoding respectively to the multi-path monitoring data that receive.H.264, dsp chip is looked the audio compression coding to the digital video signal and the I2S format signal of the ITU656 form handling port from audio frequency and video and receive.Can reach with the dsp chip in the present embodiment and to handle four road video/audio signals simultaneously.
Step 5: the data behind the compressed encoding are carried out remote transmission.Data behind the described compressed encoding are carried out remote transmission by Ethernet interface, WiFi interface or ADSL Wide Area Network interface.
Step 6: the data behind the compressed encoding are carried out this locality store.In step 6, described audio, video data can pass through hard disk SATA interface, SD card or USB2.0 interface, with the data behind the described compressed encoding with the stored in file format of FAT32 in local storage medium.Step 6 also can be carried out simultaneously with step 5, can also carry out before step 5.
Step 7: the data behind the compressed encoding are carried out this locality play.In this step, the expansion interface that can provide LCD to connect dsp chip, tangible local the broadcast.
The present invention also provides a kind of network hard disk video recorder that uses above-mentioned network audio-video monitoring method, and Fig. 2 is the structural representation of the embodiment of the network hard disk video recorder of employing the inventive method.This network hard disk video recorder comprises: a slice dsp chip 10, and electrically connect dsp chip 10 respectively look Audio Processing chip 20, Network Interface Module 30 and function expanding module 40.This monolithic dsp chip 10 is selected the PNX1700 media-specific chip of NXP (Philips) for use, and this serial DSP process chip is provided with a plurality of bus interface, network interface and function expansion interface, and it is built-in with double-speed internal memory (64M DDR SDRAM) 12; The described Audio Processing chip 20 of looking is connected on the described dsp chip by bus interface, described Network Interface Module 30 is connected on the described dsp chip by network interface, and described function expanding module links to each other with described DSP process chip by the function expansion interface corresponding with it respectively.
Described monolithic dsp chip 10 has four the tunnel and looks audio frequency input and output, four tunnel warning inputs, two tunnel warning outputs.Also have a plurality of function expansion interfaces, comprise that local memory interface, WLAN (wireless local area network) WiFi access interface (MiFi Slot), SATA interface, mobile TV receive extensive interface, TFT driving interface, USB2.0 high speed backup interface (USB2.0Host).Described a plurality of function expanding module comprise in local memory module, alarm signal access module, alarm linkage output module, remote control module, long-range picture recording module, DVB access module, mobile TV expansion module, The Cloud Terrace camera lens control module, the audio frequency bidirectional intercommunication module any one or a plurality of.Above-mentioned a plurality of function expanding module links to each other with described DSP process chip by the function expansion interface corresponding with it respectively.Decapacitation provides the basic function that present like product can provide like this, as: look the audio frequency remotely inspecting, outside the functions such as long-range video recording, audio frequency bidirectional intercommunication, alarm signal access, alarm linkage output, the control of The Cloud Terrace camera lens, also provide practical flexibly application for different user.But such as the local high definition video recording of built-in hard disk, can be with the key video sequence signal with the image quality of high definition in this locality storage or locally buffered, provide a great convenience for collecting evidence like this; Simultaneously, WiFi inserts, and towards family, the ground of no Ethernet socket access such as office building can directly be linked into network by hotspot, has removed the trouble of rewiring from; In addition, the mobile TV that is provided with receives extensive interface, may be used in the vehicle-mounted monitoring, amusement functions such as mobile TV are provided for automobile simultaneously, and system can be built directly in the liquid crystal display screen by Thin Film Transistor (TFT) (TFT) interface, and provide vehicle-mounted broadcast by the copy advertising programme of SD card, can be recorded to when supervising picture in built-in hard disk or the SD card.
The described audio processing modules of looking is from camera collection analog audio-video signal, and the digital video signal with analog video signal A/D is converted to the ITU656 form is converted to the I2S format signal with the simulated audio signal of gathering by audio A/D; Then, look the Audio Processing port with what the digital video signal of described ITU656 form and I2S format signal were sent to the DSP process chip, further, H.264 the DSP process chip looks the audio compression coding to the digital video signal and the I2S format signal of the ITU656 form received; The audio, video data of described Network Interface Module after with compressed encoding carries out remote transmission by Ethernet interface, WiFi interface or ADSL Wide Area Network interface, reaches the purpose of monitoring network audio and video.
In addition, the Network Personal Video Recorder of present embodiment comprises that also power module powers, and itself and dsp chip electrically connect, and this power module can connect traditional 12V power supply adaptor power supply, also can support ethernet technology (POE), the rewiring of having saved power line.Aspect power supply, be that the monolithic DSP process chip of efficient high integration is handled mission critical because of what adopt, the power consumption of system is under control, and Overall Power Consumption is no more than 5W.
In sum, adopt network audio-video monitoring method provided by the invention, can realize the dual realization of local control and Long-distance Control.This method does not change the existing network framework, utilizes existing Ethernet transmission data standard and newest standards standard, and has kept the compatibility with existing Ethernet system and user, has reduced cost to greatest extent.Simultaneously, adopt the networking DVR of network audio-video monitoring method provided by the invention, the monolithic DSP process chip that it adopts, realized from hardware configuration simplify, efficiently to the simplification of software logic structure, efficient, thereby low cost, the interface of realizing product are abundanter, the purpose of high-performance, low-power consumption and high stability more; Simultaneously, the H.264 application of compression coding technology makes that video time is longer, Network Transmission is more smooth; Have, the application of USB2.0 high speed HOST interface is high speed USB equipment, provides interface as USB flash disk, USB portable hard drive again, thereby realizes the operations such as quick backup of data.
The above for the person of ordinary skill of the art, can make other various corresponding changes and distortion according to technical scheme of the present invention and technical conceive, and all these changes and distortion all should belong to the protection range of claim of the present invention.
Claims (10)
1, a kind of network audio-video monitoring method is characterized in that, comprising:
Step 1: signal collecting device is provided;
Step 2: provide and look the real-time monitor data of multichannel that Audio Processing chip switching signal collecting device provides;
Step 3: the multi-path monitoring data after will changing send a dsp chip to;
Step 4:DSP chip carries out H.264 compressed encoding respectively to the multi-path monitoring data that receive;
Step 5: the data behind the compressed encoding are carried out remote transmission, the data behind the described compressed encoding are carried out remote transmission by Ethernet interface, WiFi interface or ADSL Wide Area Network interface.
2, network audio-video monitoring method as claimed in claim 1, it is characterized in that, also comprise: step 6: the data behind the compressed encoding are carried out this locality store, in step 6, described audio, video data is by hard disk SATA interface, SD card or USB2.0 interface, with the data behind the described compressed encoding with the stored in file format of FAT32 in local storage medium.
3, network audio-video monitoring method as claimed in claim 1 is characterized in that, also comprises: step 7: the data behind the compressed encoding are carried out this locality play, in the step 7, the expansion interface that provides LCD to connect dsp chip is realized local the broadcast.
4, network audio-video monitoring method as claimed in claim 1 is characterized in that, in the step 1, this signal collecting device is the camera of camera, band cloud platform, a kind of or its combination of warning inductor, so that the real-time monitor data on monitoring ground to be provided.
5, network audio-video monitoring method as claimed in claim 1, it is characterized in that, step 2 is looked the Audio Processing chip by monolithic and is realized, described real-time monitor data comprises analog video signal and simulated audio signal, this looks the Audio Processing chip after receiving real-time monitor data, look the digital video signal that the Audio Processing chip is converted to analog video signal A/D the ITU656 form, simulated audio signal is converted to the I2S format signal by audio A/D, in step 2, look the Audio Processing chip with one and change the real-time monitor data of multichannel simultaneously.
6, network audio-video monitoring method as claimed in claim 1, it is characterized in that, in the step 3, this DSP process chip is the high-performance highly integrated chip, be PNX1500, PNX1501 or PNX1700, it handles digital video signal and the I2S format signal that port receives the ITU656 form that the audio frequency and video process chip sends by audio frequency and video, and it can support the input of multichannel video/audio signal simultaneously, in step 4, dsp chip can be handled the multichannel video/audio signal simultaneously.
7, a kind of network hard disk video recorder is characterized in that, comprising: a slice dsp chip, and electrically connect dsp chip respectively look Audio Processing chip, Network Interface Module and function expanding module.
8, network hard disk video recorder as claimed in claim 7, it is characterized in that, this monolithic dsp chip adopts the high-performance highly integrated chip, be PNX1500, PNX1501 or PNX1700, this dsp chip is provided with a plurality of bus interface, network interface and function expansion interface, and it is built-in with the double-speed internal memory; The described Audio Processing chip of looking is connected on the described dsp chip by bus interface, described Network Interface Module is connected on the described dsp chip by network interface, and described function expanding module links to each other with described dsp chip by the function expansion interface corresponding with it respectively.
9, network hard disk video recorder as claimed in claim 8, it is characterized in that, described monolithic dsp chip has four the tunnel and looks the audio frequency input and output, four the tunnel report to the police imports, two the tunnel report to the police exports, described function expansion interface comprises local memory interface, WLAN (wireless local area network) WiFi access interface, the SATA interface, mobile TV receives extensive interface, the TFT driving interface, USB2.0 high speed backup interface, described function expanding module comprises local memory module, the alarm signal access module, the alarm linkage output module, remote control module, long-range picture recording module, the DVB access module, mobile TV expansion module, The Cloud Terrace camera lens control module, in the audio frequency bidirectional intercommunication module any one or a plurality of.
10, network hard disk video recorder as claimed in claim 7 is characterized in that, also comprises power module, and itself and dsp chip electrically connect, and this power module can connect the power supply of 12V power supply adaptor, and supports ethernet technology.
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| CN101799876A (en) * | 2010-04-20 | 2010-08-11 | 王巍 | Video/audio intelligent analysis management control system |
| CN102170381A (en) * | 2011-03-22 | 2011-08-31 | 成都飞视通科技有限公司 | Unpacked data two-way transmission system and method based on gigabit Ethernet physical layer interface |
| CN102201957A (en) * | 2011-05-27 | 2011-09-28 | 姬云东 | Enterprise information system based on Internet of things |
| CN102543108A (en) * | 2011-08-16 | 2012-07-04 | 北京友友天宇系统技术有限公司 | Video redundancy strategy optimization method based on distributed storage |
| CN102685427A (en) * | 2011-03-10 | 2012-09-19 | 郑州大学 | Embedded digital video mobile storage controller and video monitoring storage system |
| CN102932637A (en) * | 2012-11-26 | 2013-02-13 | 中国地质调查局水文地质环境地质调查中心 | Landslide collapse displacement fiber video monitoring device |
| CN103260011A (en) * | 2013-05-16 | 2013-08-21 | 杭州巨峰科技有限公司 | System and method for achieving monitoring of more paths by utilization of net-harddisk video recorder |
| CN103312985A (en) * | 2013-06-05 | 2013-09-18 | 四川艾普视达数码科技有限公司 | Diffraction-preventing web camera |
| CN103631742A (en) * | 2012-08-27 | 2014-03-12 | 宏碁股份有限公司 | Expansion module and cloud-terminal device |
| CN104125434A (en) * | 2014-07-31 | 2014-10-29 | 深圳锐取信息技术股份有限公司 | Long-distance high-definition transmission system |
| CN104135643A (en) * | 2014-07-31 | 2014-11-05 | 深圳锐取信息技术股份有限公司 | Long-distance high-definition transmission method and equipment |
| CN104243853A (en) * | 2014-08-25 | 2014-12-24 | 青岛歌尔声学科技有限公司 | High-definition multimedia interface (HDMI) double-display device and display method |
| CN104660871A (en) * | 2013-11-19 | 2015-05-27 | 深圳锐取信息技术股份有限公司 | Record-broadcast all-in-one machine based on embedded mixed hardware architecture |
| CN104699383A (en) * | 2013-12-20 | 2015-06-10 | 杭州海康威视数字技术股份有限公司 | Binding relation updating method and device |
| CN105100663A (en) * | 2014-05-15 | 2015-11-25 | 北京同步科技有限公司 | Recording system based on hardware encoders, audio and video processing apparatus, and recording method |
| CN105187753A (en) * | 2015-08-06 | 2015-12-23 | 佛山六滴电子科技有限公司 | System for recording panoramic video |
| CN105376521A (en) * | 2014-09-02 | 2016-03-02 | 马胜 | Remote real-time network monitoring system |
| CN106713802A (en) * | 2017-02-24 | 2017-05-24 | 广州威普数码科技有限公司 | Hybrid hard disk video recorder |
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| CN101799876A (en) * | 2010-04-20 | 2010-08-11 | 王巍 | Video/audio intelligent analysis management control system |
| CN102685427A (en) * | 2011-03-10 | 2012-09-19 | 郑州大学 | Embedded digital video mobile storage controller and video monitoring storage system |
| CN102170381A (en) * | 2011-03-22 | 2011-08-31 | 成都飞视通科技有限公司 | Unpacked data two-way transmission system and method based on gigabit Ethernet physical layer interface |
| CN102201957A (en) * | 2011-05-27 | 2011-09-28 | 姬云东 | Enterprise information system based on Internet of things |
| CN102543108A (en) * | 2011-08-16 | 2012-07-04 | 北京友友天宇系统技术有限公司 | Video redundancy strategy optimization method based on distributed storage |
| CN103631742A (en) * | 2012-08-27 | 2014-03-12 | 宏碁股份有限公司 | Expansion module and cloud-terminal device |
| CN103631742B (en) * | 2012-08-27 | 2016-08-10 | 宏碁股份有限公司 | Enlargement module and high in the clouds device |
| CN102932637A (en) * | 2012-11-26 | 2013-02-13 | 中国地质调查局水文地质环境地质调查中心 | Landslide collapse displacement fiber video monitoring device |
| CN103260011A (en) * | 2013-05-16 | 2013-08-21 | 杭州巨峰科技有限公司 | System and method for achieving monitoring of more paths by utilization of net-harddisk video recorder |
| CN103312985A (en) * | 2013-06-05 | 2013-09-18 | 四川艾普视达数码科技有限公司 | Diffraction-preventing web camera |
| CN104660871A (en) * | 2013-11-19 | 2015-05-27 | 深圳锐取信息技术股份有限公司 | Record-broadcast all-in-one machine based on embedded mixed hardware architecture |
| CN104699383B (en) * | 2013-12-20 | 2018-07-10 | 杭州海康威视数字技术股份有限公司 | Binding relationship update method and device |
| CN104699383A (en) * | 2013-12-20 | 2015-06-10 | 杭州海康威视数字技术股份有限公司 | Binding relation updating method and device |
| CN105100663B (en) * | 2014-05-15 | 2019-04-23 | 北京同步科技有限公司 | Recording system, audio-video processing unit and method for recording based on hardware coder |
| CN105100663A (en) * | 2014-05-15 | 2015-11-25 | 北京同步科技有限公司 | Recording system based on hardware encoders, audio and video processing apparatus, and recording method |
| CN104135643A (en) * | 2014-07-31 | 2014-11-05 | 深圳锐取信息技术股份有限公司 | Long-distance high-definition transmission method and equipment |
| CN104135643B (en) * | 2014-07-31 | 2018-01-19 | 深圳锐取信息技术股份有限公司 | A kind of method and apparatus of long range high definition transmission |
| CN104125434A (en) * | 2014-07-31 | 2014-10-29 | 深圳锐取信息技术股份有限公司 | Long-distance high-definition transmission system |
| CN104243853A (en) * | 2014-08-25 | 2014-12-24 | 青岛歌尔声学科技有限公司 | High-definition multimedia interface (HDMI) double-display device and display method |
| CN105376521A (en) * | 2014-09-02 | 2016-03-02 | 马胜 | Remote real-time network monitoring system |
| CN105187753A (en) * | 2015-08-06 | 2015-12-23 | 佛山六滴电子科技有限公司 | System for recording panoramic video |
| CN106713802A (en) * | 2017-02-24 | 2017-05-24 | 广州威普数码科技有限公司 | Hybrid hard disk video recorder |
| CN110572424A (en) * | 2018-06-06 | 2019-12-13 | 杭州海康威视数字技术股份有限公司 | Device control method, device, electronic device and storage medium |
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Application publication date: 20090819 |