CN1406055A - Image-sound type network pick-up camera - Google Patents
Image-sound type network pick-up camera Download PDFInfo
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- CN1406055A CN1406055A CN01124129A CN01124129A CN1406055A CN 1406055 A CN1406055 A CN 1406055A CN 01124129 A CN01124129 A CN 01124129A CN 01124129 A CN01124129 A CN 01124129A CN 1406055 A CN1406055 A CN 1406055A
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Abstract
The networked camera comprises the following parts. The digital image unit is used to generate the digital image signal. The digital voice unit generates the digital voice signal. The system control user interface controls the operation of the camera. The synchronous processing the image and sound signal and the real time transferring the image and sound signal to the monitoring end through the network transmission by using the connection among the digital image and sound processor, digital image unit, the digital voice unit, the system control user interface. The digital video recorder can store the image and sound or the sound and the miage can be played back synchronistically by using the network browser.
Description
Technical field
The invention relates to a kind of image-sound type network pick-up camera (Audio/video IPcamcorder), and particularly relevant for a kind of can with the audio and video digitlization and synchronously (synchronized) by the image-sound type network pick-up camera of Network Transmission.
Background technology
In the epoch of information explosion, human necessary by different modes, for example image and sound are accepted the knowledge transmission fast, because the innovation of science and technology breaks through, the digitlization of signal make video-audio signal not must by particular intermediaries (media) just can be more stable transmit.And in order to adapt to the demand of present digital Age, also develop one after another and many digital products, as digital camera (digitalcamera), digital camera (digital camcorder), digital walkman (MP3 player), digital projector high-tech products such as (DVD player).Allow the user can revise digital signal on computers easily with the fitness of computer, and these digital products are controlled, for example by the interface between digital camera and the computer, the operation of control figure camera, wherein the digital camera image of catching also can be made amendment by image interface.
In recent years,, significantly promote Communications service, make the transfer of data between the computer not be subjected to distance limit because Internet is flourish.Transfer of data on the network develops at present more and more general multi-media network transmission by early stage lteral data transmission.And, also make the human audio-visual acoustic and light information that is developed to spread all over each corner of network gradually when the arranged in pairs or groups rapid and convenient of Network Transmission of these digital electronic products.Technique known comprises the communications protocol with Internet, and for example HTTP or HTML agreement transfer out static or movable image that digital camera the obtained mode by network, and by web browser video camera controlled.
Yet existing video camera is only had image output, does not have a voice output, or only add the tool microphone at video camera, its output line length still has certain limitation (being no more than six meters usually), so can't carry out real-time Data Transmission in the mode of no distance limit synchronously to after the audio and video digitlization.
Summary of the invention
Purpose of the present invention just provides a kind of image-sound type network pick-up camera, can and transmit at a distance by network synchronously the audio and video digitlization.
Another object of the present invention provides a kind of image-sound type network pick-up camera, has a digitized video unit and produces a digital image signal; One digital speech unit produces an audio digital signals; One digital audio-video processor.By being connected of digital audio-video processor and digitized video unit and digital speech unit, carry out the Synchronous Processing of video-audio signal, and be transmitted through the network to monitoring client in real time, utilize digital VTR that audio and video is stored or utilize web browser that audio and video is dialled synchronously and put.
Image-sound type network pick-up camera of the present invention comprises a digitized video unit, to export the digital image signal that a video camera is absorbed; One digital speech unit is connected with this digitized video unit, to export the audio digital signals that this video camera is recorded; The control user of one system interface provides the inclination of user's one control command to control this video camera, the operation of shaking mirror and zoom; And a digital audio-video processor, be connected with this digitized video unit, this digital speech unit and this system control user interface.
And this digital audio-video processor comprises that also a compression module is connected with this digitized video unit, with compression this digital image signal by this digitized video unit institute feed-in; One calling module is connected with the control user of this system interface, with compression this control command by the feed-in of the control user of this system interface institute; One RTP is connected with this compression module and this digital speech unit, to carry out the Synchronous Processing of this digital image signal and this audio digital signals, produces together step number word video-audio signal; And one lan interfaces be connected with this RTP and this calling module, make this synchronous digital video-audio signal in the present network on-line mode that is developed by the output of this network interface.
The present invention utilizes interior RTP of digital audio-video processor and relevant communications protocol, the digital audio-video signal that video camera obtained is compressed and decompression, and arrange the processing video-audio signal synchronously.Then, by lan interfaces the digital audio-video signal is exported in the lump again, and link with the mode of Internet and monitoring client, the real-time audio-video signal that web camera is produced can be stored, or plays real-time audio and video by the mode of web browser.In addition, because image-sound type network pick-up camera of the present invention can carry out real-time Transmission by network, therefore also can be applicable to the device of intercom or the audio-visual synchronous transmission of other needs.
Description of drawings
Fig. 1 is the configuration schematic diagram of the image-sound type network pick-up camera of a preferred embodiment of the present invention;
Fig. 2 is the digital audio-video processor schematic diagram of the image-sound type network pick-up camera of Fig. 1;
Fig. 3 is the network application configuration schematic diagram of image-sound type network pick-up camera;
Fig. 4 is the network application configuration schematic diagram of image-sound type network intercom.
Number in the figure is respectively:
100: video camera
102: the digitized video unit
104: the digital speech unit
106: the control user of system interface
108: the digital audio-video processor
110: microphone
112: speech amplifier
114: the speech decoding compiler
116: voice compression module
118: random asccess memory
120: read-only memory
200: the image compression module
202: calling module
204: the real-time communication agreement
206: lan interfaces
208: Network Control Protocol
210: the stage control protocol
212: HTML (Hypertext Markup Language)
300: image-sound type network pick-up camera
310,410: hub
320: monitoring client
400: indoor display
420: the image-sound type network intercom
Embodiment
Please refer to Fig. 1, is the configuration schematic diagram of the image-sound type network pick-up camera of a preferred embodiment of the present invention.Image-sound type network pick-up camera 100 of the present invention mainly comprises set of number image unit 102, produces the captured digitized video of video camera 100; Set of number voice unit 104 produces the digital speech that video camera 100 is recorded; One group system control user's interface (systemcontrol user interface) 106, control video camera 100 inclination (tilting), shake mirror (panning) and zoom (zooming) operation; Set of number sound processing device (A/Vprocessor) 108 comes Synchronous Processing image and voice signal, and exports by network interface.
Wherein digitized video unit 102 also has a digital signal processor (digital signalprocessor) (not being plotted among the figure), and original image signal (raw data) digitlization with video camera 100 is absorbed produces a digital image signal.Therefore by being connected of digitized video unit 102 and digital audio-video processor 108,,, and transmit at a distance by network so that handle synchronously with the audio digital signals of feed-in subsequently with digital image signal feed-in digital audio-video processor 108.In addition, because digital audio-video processor 108 is when carrying out the signal arrangement, may need signal to be done to store temporarily and use application-specific to carry out data processing, so digital audio-video processor 108 also comprises the random asccess memory (RAM) 118 and read-only memory (ROM) 120 of being convenient to the signal access.
The audio digital signals that video camera 100 is recorded then is to utilize digital speech unit 104 to produce.As shown in Figure 1, digital speech unit 104 has a microphone (microphone) 110, a speech amplifier (audio amplifier) 112, one speech decoding compiler (audio codec) 114 and one voice compression module (speech compressionmodule) 116 that is installed on the video camera 100.When microphone 110 received a sound after, be about to this sound and convert an electronic signal to.This electronic signal can be deciphered and compile after amplifying via speech amplifier 112 by speech decoding compiler 114.Yet, because this voice data file is too big, therefore must utilize voice compression module 116 compressed signals, for example the audio files of wav finally produces a digital speech package (audio packet).Wherein, the preferable speech data compress mode of the present invention for example is that (international telecommunication union, the G.723 standard of ITU) being formulated (G.723 standard) is carried out the coding and the decoding of digital speech according to International Telecommunications Union.Therefore, the actual compression mode of voice signal is not described in detail at this.
Next, please refer to Fig. 2, is the configuration schematic diagram of the image-sound type network pick-up camera digital audio-video processor of Fig. 1.
By shown in Figure 2, digital audio-video processor 108 also comprises an image compression module (videocompression module) 200, one calling module (signaling module) 202, one RTP (real-time transport protocol, RTP) 204 and one lan interfaces (localarea network (LAN) interface) 206.Wherein, digitized video unit 102 is connected with image compression module 200, makes digital image signal carry out the image compression by feed-in image compression module 200.Though the digitized video of 102 feed-ins in digitized video unit can compress digitized video with any image compression standard that International Telecommunications Union was formulated, but H.263 preferable image compress mode is formulated standard (H.263 standard) with International Telecommunications Union to carry out the coding and the decoding of digitized video, produces a digitized video package (video packet).Therefore, the actual compression mode of signal of video signal is not described in detail at this yet.In addition, in the present embodiment, though image compression module 200 is in digital audio-video processor 108, its position is not subjected to narration of the present invention and is restricted, image compression module 200 also can built-in (built-in) in digitized video unit 102.
Because real-time transport protocol (rtp) 204 provides the network transmission function of (end-to-end) between end and the end, be applicable to Internet communication service transmitting real-time data, comprise voice, image and simulate signal.Therefore, by being connected of RTP 204 and digital speech unit 104 and image compression module 200, digital image signal package after overcompression, to and carry out Synchronous Processing with the audio digital signals package feed-in RTP 204 after the compression, different signal packages is arranged (sequencing), to produce real-time video-audio signal.In addition, RTP 204 also has one and transmits control protocol (real-time controlprotocol in real time, RTCP), the quality that distributes by feedback signal is promoted the transmission of signal, and transfer of data that can the keyholed back plate multiterminal and provide minimum control and authentication (identification) function.Though the present invention is the Synchronous Processing of carrying out digitized video and digital speech with RTP, any can carry out the relevant communications protocol of Synchronous Processing to digital image signal and audio digital signals also will be in the scope that the present invention protected.
Calling module 202 of the present invention is the message-sending protocol (signaling protocol) that International Telecommunications Union formulated, comprise Network Control Protocol (network control protocol) 208, RAS (registration for example, admission, status) have login, enter, the control function of state, also be referred to as gateway (gatekeeper), transfer of data done properly management by the channel (channel) that the above-mentioned information of transmission (message) is provided; And Q.931 management communication is set and is finished.In addition, calling module 202 also comprises stage control protocol (session controlprotocol) 210, and for example H.245, it coordinates the use of transmission channel, and the control signal flow is posted a letter with general instruction, and carries out online transmission in the mode of non-telephone signal; And HTML (Hypertext Markup Language) (hyper-text transfer protocol, HTTP) 212, the transmission of the signal and instruction between Internet browser (World Wide Web (WWW) browser) and the Internet server (www) is provided.Yet the present invention is not limited by above-described communications protocol, and any energy administering digital signal of video signal and audio digital signals carry out the relevant communications protocol of real-time Transmission also in the scope that the present invention protected.
So, when the control user of system interface 106 provides an instruction and is sent to calling module 202 at the particular camera function, can monitor (monitoring) by network to video camera 100 via above-mentioned Network Control Protocol 208, stage control protocol 210 and HTML (Hypertext Markup Language) 212.And combine with RTP 204, the transmission of control figure video-audio signal reaches the purpose that transfer of data is not subjected to distance limit.Then, by lan interfaces (local area network interface, LAN interface) 206, the digital audio-video signal of process Synchronous Processing can transfer out in the mode of Internet.
Present embodiment be by integrated services digital network (integrated services digital network, ISDN), T1 special line (T1 carrier line), general modem (modem) carry out the transmission of digital audio-video signal.In addition, also can carry out the video-audio data transmission, form so-called phone image (phone video) by the regular phone line.The present invention also can use other network on-line mode and carry out transfer of data, the asymmetric digital subscriber loop that is developed in recent years (asymmetrical digital subscribe line for example, ADSL) or broadband network (cable modem) transmission, to reach identical purpose.
Because therefore transmission of digital video-audio signal when image-sound type network pick-up camera of the present invention can pass through network implementation also may extend to different network applications.Fig. 3 is the network application configuration schematic diagram of image-sound type network pick-up camera; Fig. 4 is the network application configuration schematic diagram of image-sound type network intercom (IP intercom).
Please refer to Fig. 3, be that a plurality of free-standing web camera 300 described in the invention is connected to hub (hub) 310, therefore the network shooting function is according to the difference of decorating position, produce different real-time audio and video signals, be connected with other monitoring client (monitoring terminal) 320 on the network through hub 310 and router (router) (not being plotted among the figure).Make the user of different monitoring end also can carry out various application to audio and video simultaneously.For example, when monitoring client 320 be that (standalone digital video recorder, S-DVR), the user can store real-time audio and video signal a free-standing digital VTR.Yet, when monitoring client 320 is one when having the computer terminal of web browser (web browser) function, the user then can carry out synchronous playing by web browser with audio and video, makes the user of browse network can watch the audio and video that web camera is caught in real time.
In addition, please refer to Fig. 4, is an image-sound type network intercom 420, one hubs 410 and a plurality of indoor display 400, and wherein image-sound type network intercom 420 is received a plurality of indoor displays 400 by network.Because image-sound type network pick-up camera of the present invention can pass through network on-line, and the user is provided required monitoring function, therefore also can be useful on the image-sound type intercom of zones of different.For example, the image-sound type network pick-up camera when activated intercom 420 via touching in just can be caught image and sound in the pick-up lens in real time, is presented on indoor display 400 during via network implementation.So this application is in the region security management its certain function being arranged also.
In sum, the present invention utilizes interior RTP of digital audio-video processor and relevant communications protocol, the digital audio-video signal that video camera obtained is compressed and decompression, and arrange the processing video-audio signal synchronously.Then, by lan interfaces the digital audio-video signal is exported in the lump again, and link with the mode of Internet and monitoring client, the real-time audio-video signal that web camera is produced can be stored, or plays real-time audio and video by the mode of web browser.In addition, because image-sound type network pick-up camera of the present invention can carry out real-time Transmission by network, therefore also can be applicable to intercom or other, the device of the audio-visual synchronous transmission of for example long-range needs.In addition, image-sound type network pick-up camera of the present invention also can have wider application, develops into to have two-way (bi-directional) video-audio data transmission, makes each end on the network can both be simultaneously and receive the other side's image and sound mutually.
Though the present invention with a preferred embodiment openly as above; but it is not in order to limit the present invention; any personnel that are familiar with this technology; do without departing from the spirit and scope of the present invention to change and retouching; all belong to protection scope of the present invention, and protection scope of the present invention should be with being as the criterion that claims were limited.
Claims (13)
1. image-sound type network pick-up camera is characterized in that: comprising:
One digitized video unit is to export the digital image signal that a video camera is absorbed;
One digital speech unit is connected with this digitized video unit, to export the audio digital signals that this video camera is recorded;
The control user of one system interface provides the inclination of at least one control command of user to control this video camera, the operation of shaking mirror and zoom;
One digital audio-video processor is connected with this digitized video unit, this digital speech unit and this system control user interface, and wherein this digital audio-video processor further comprises:
One compression module is connected with this digitized video unit, with the digital image signal of compression by this digitized video unit institute feed-in;
One calling module is connected with the control user of this system interface, with compression this control command by the feed-in of the control user of this system interface institute;
One RTP is connected with this compression module and this digital speech unit, to carry out the Synchronous Processing of this digital image signal and this audio digital signals, produces together step number word video-audio signal.
2. image-sound type network pick-up camera according to claim 1, it is characterized in that: this digital audio-video processor comprises that also a lan interfaces is connected with this RTP and this calling module, and this synchronous digital video-audio signal is transmitted by this network interface.
3. image-sound type network pick-up camera according to claim 2 is characterized in that: this lan interfaces is connected with a digital audio-video video tape recorder, so that this synchronous digital video-audio signal is stored in this digital audio-video video tape recorder by network.
4. image-sound type network pick-up camera according to claim 1 is characterized in that: this digital speech unit also comprises a microphone, a speech amplifier, a speech decoding compiler and a voice compression module.
5. image-sound type network pick-up camera according to claim 1 is characterized in that: this digitized video unit also comprises a digital signal processor.
6. image-sound type network pick-up camera according to claim 1 is characterized in that: this image-sound type network pick-up camera also comprises an image-sound type network intercom, and this image-sound type network intercommunication function is connected with an indoor display by a network connection port.
7. image-sound type network pick-up camera is characterized in that: comprising:
A digital image signal is exported in one digitized video unit;
An audio digital signals is exported in one digital speech unit;
The control user of one system interface is exported a control command;
One digital audio-video processor comprises that a RTP receives this digital image signal, this audio digital signals and a lan interfaces.
8. image-sound type network pick-up camera according to claim 7 is characterized in that: this lan interfaces is connected with a digital audio-video video tape recorder, so that this synchronous digital video-audio signal is stored in this digital audio-video video tape recorder by network.
9. image-sound type network pick-up camera according to claim 7 is characterized in that: this digital speech unit further comprises a microphone, a speech amplifier, a speech decoding compiler and a voice compression module.
10. image-sound type network pick-up camera according to claim 7 is characterized in that: this digitized video unit further comprises a digital signal processor and an image compression module.
11. image-sound type network pick-up camera according to claim 7 is characterized in that: this image-sound type network pick-up camera also comprises an image-sound type network intercom, and this image-sound type network intercommunication function is connected with an indoor display by a hub.
12. an image-sound type network image capture method is characterized in that: comprising:
Feed-in one signal of video signal and voice signal to a host-host protocol make this host-host protocol carry out a processing synchronously to this signal of video signal and this voice signal, produce a real-time audio-video signal;
Transmit this real-time audio-video signal to a lan interfaces, this real-time audio-video signal can be exported by this lan interfaces.
13. image-sound type network image capture method according to claim 12 is characterized in that: this host-host protocol comprises a RTP.
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| Application Number | Priority Date | Filing Date | Title |
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| CN01124129A CN1406055A (en) | 2001-08-15 | 2001-08-15 | Image-sound type network pick-up camera |
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|---|---|---|---|
| CN01124129A CN1406055A (en) | 2001-08-15 | 2001-08-15 | Image-sound type network pick-up camera |
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| CN1406055A true CN1406055A (en) | 2003-03-26 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444640C (en) * | 2006-11-21 | 2008-12-17 | 北京中星微电子有限公司 | A network pick-up device |
| CN100556143C (en) * | 2003-05-19 | 2009-10-28 | 株式会社日立制作所 | Code device, the camera system that uses it and coding method |
| CN102143359A (en) * | 2010-01-28 | 2011-08-03 | 智晟电子股份有限公司 | Network camera and data transmission method thereof |
| CN102244717A (en) * | 2011-04-14 | 2011-11-16 | 钰创科技股份有限公司 | Network camera capable of generating special sound effect and method for generating special sound effect |
| CN101500128B (en) * | 2008-02-03 | 2013-09-18 | 深圳艾科创新微电子有限公司 | Method and apparatus for loading additional information on display image of network camera device terminal |
| CN101849261B (en) * | 2007-08-17 | 2013-10-30 | 菲尼克斯没药树脂科技专营有限公司 | Method and system for content delivery |
-
2001
- 2001-08-15 CN CN01124129A patent/CN1406055A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100556143C (en) * | 2003-05-19 | 2009-10-28 | 株式会社日立制作所 | Code device, the camera system that uses it and coding method |
| CN100444640C (en) * | 2006-11-21 | 2008-12-17 | 北京中星微电子有限公司 | A network pick-up device |
| CN101849261B (en) * | 2007-08-17 | 2013-10-30 | 菲尼克斯没药树脂科技专营有限公司 | Method and system for content delivery |
| CN101500128B (en) * | 2008-02-03 | 2013-09-18 | 深圳艾科创新微电子有限公司 | Method and apparatus for loading additional information on display image of network camera device terminal |
| CN102143359A (en) * | 2010-01-28 | 2011-08-03 | 智晟电子股份有限公司 | Network camera and data transmission method thereof |
| US8854497B2 (en) | 2011-01-10 | 2014-10-07 | Etron Technology, Inc. | Webcam capable of generating special sound effects and method of generating special sound effects thereof |
| CN102244717A (en) * | 2011-04-14 | 2011-11-16 | 钰创科技股份有限公司 | Network camera capable of generating special sound effect and method for generating special sound effect |
| CN102244717B (en) * | 2011-04-14 | 2014-08-13 | 钰创科技股份有限公司 | Network camera capable of generating special sound effect and method for generating special sound effect |
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