KR20020071346A - Poly net streamer system - Google Patents

Abstract

PURPOSE: A poly net streamer system is provided to allow a client to watch video without having additional plug-in only by connecting with a designated streamer system including a web server application. CONSTITUTION: A poly net streamer system includes an encoder(10) having a camera(11), a video input unit(12) and an audio input unit(13), and a client computer terminal(20) operating a web browser(21), window and Linux operating systems(22). The streamer system further includes a core poly net streamer(30) that has a predetermined streamer(31), real-time Java applet(32), video/audio codec(33) and operates window and Linux operating system and Mac OS(34), and a core poly net proxy unit(40) operating a predetermined proxy(41), apache server(42), window and Linux operating systems(43). The encoder is connected to the core poly net streamer through a predetermined RS232C cable(51), and the client computer terminal is connected with the core poly net proxy unit through the Internet(53). The core poly net proxy unit is connected with the core poly net streamer through the Internet.

Description

Poly net streamer system

The present invention relates to a streaming server, which is a web camera solution for streaming audio and video in real time over the Internet or an intranet, and in particular, a network video streaming server based on Java (JAVA) and Quick Time (PolyNet) Poly Net) streamer system.

As is well known to those skilled in the art, streaming refers to a technology that can treat transmitted data as if it were a continuous, continuous stream of water. Streaming technology is becoming more and more important with the growth of the Internet because most users do not have fast access lines to download large multimedia files immediately. Using this streaming technology, a client browser or plug-in can start presenting data even before all the files are transferred.

In order for such streaming to work, the client side receiving the data must be able to collect the data and send it to the application that processes the data and converts it into sound or pictures. This means that if a streaming client receives data faster than necessary, it needs to store the extra data in a buffer. However, if the data does not come in fast enough, the representation of the data is not smooth.

As described above, a server that streams audio and video data in real time through the Internet or an intranet is a streamer. On the other hand, the streamer is a web camera (web cam) solution for streaming audio and video in real time over the Internet or intranet.

However, the conventional streamer does not have its own web server application (Application; application), so that the client has a problem in that the viewer must view a separate plug-in through a web browser to access the designated streamer server.

In addition, the webcam software used in the world is running on a variety of platforms, there is a problem that many people can not watch at the same time, because of the limited bandwidth provided for this, there is a problem in the position of the camera.

The present invention has been made to solve the above problems, and provides a Poly Net streamer system, which is a network video streaming server based on the Quick Time Java codec. There is a purpose.

It is still another object of the present invention to provide a polynet streamer system in which a web server application is embedded in the streamer itself so that a client can access the streamer system without a plug-in through a web browser. .

Another object of the present invention is to provide a poly-stream streamer system for automatically watching the best video by transmitting video streaming files of various bandwidths according to the network environment of the connected client.

Another object of the present invention is to provide a polynet streamer system with improved price performance by enabling video streaming and a low bandwidth webcam service in the absence of an IP address.

1 is a block diagram of a polynet streamer system according to the present invention.

2 is a flowchart of operation of the polynet streamer system according to the present invention;

<Description of the symbols for the main parts of the drawings>

10: encoder unit 12: video input unit

13: audio input unit 20: client terminal

21: Web browser 30: Core Polynet Streamer

32: Java Applet 33: Video / Audio Codec

40 core polynet proxy 42 apache server

Polynet streamer system according to the present invention to achieve the above object,

A streamer system, comprising: an encoder having a camera, a video input unit and an audio input unit; A client computer terminal capable of operating a web browser and a Windows and Linux operating system; A core polynet streamer unit having a predetermined streamer, a real-time Java applet, and a video / audio codec, and capable of operating systems of Windows, Linux, and Mac OS; And a core polynet proxy unit capable of operating a predetermined proxy, Apache server, window, and Linux operating system.

The encoder portion and the core polynet streamer portion are connected by a predetermined RS-232C cable, the client computer terminal and the core polynet proxy portion are connected by the Internet, and the core polynet proxy portion and the core polynet streamer are connected. The feature is that it is also connected to the Internet by the Internet.

In a preferred embodiment of the present invention, the signal input by the video input unit of the encoder unit is NTSC, PAL, the input method is RCA, S-Video, USB, IEEE 1394.

In a preferred embodiment of the present invention, the frequency that can be processed by the audio input unit of the encoder is 8KHz ~ 44KHz.

In an exemplary embodiment of the present invention, the encoder unit includes a camera port capable of pan, tilt, and zoom, and the video is coded by the codec of the core polynet streamer unit using the camera port. Camera control signal can be input along with audio signal.

In a preferred embodiment of the present invention, the Java applet of the core polynet streamer portion streams video / audio in real time, and the codec includes a secondary compression routine of video / audio.

In a preferred embodiment of the present invention, the core polynet proxy unit is configured to be able to selectively stream in accordance with the accessor count by infinitely replicating the stream in its own server.

Hereinafter, preferred embodiments of the polynet streamer system according to the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, when it is determined that detailed descriptions of related well-known technologies or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or an operator. Therefore, the definition should be made based on the contents throughout the specification.

1 is a configuration diagram of a streamer system according to the present invention, Figure 2 is a flow chart of the operation of the streamer system according to the present invention.

1 and 2, a streamer system according to the present invention includes an encoder unit 10 including a camera 11, a video input unit 12, and an audio input unit 13; A client computer terminal 20 capable of operating the web browser 21 and the Windows and Linux operating systems 22; The core polynet streamer section having a predetermined streamer 31, a real-time Java applet 32, and a video / audio codec 33, and capable of operating systems 34 of Windows, Linux, and Mac OS (Mac OS) ( 30); And a core polynet proxy portion 43 capable of a predetermined proxy 41, an Apache server 42, and an operating system 43 of Windows and Linux.

The operation, operation and function of the polynet streamer system of the present invention configured as described above will be described with reference to FIGS. 1 and 2.

In the polynet streamer system of the present invention, the encoder unit 10 inputs the video 110 (FIG. 2) / audio 112 and the camera control signal 114 to the polynet streamer codec 33 on a predetermined PC. do. The video signals input to the encoder unit 10 through the video input unit 11 are NTSC and PAL, and the input methods are all RCA, S-Video, USB, and IEEE 1394. The video input card 116 (FIG. 2) used at this time may be a general purpose video capture card.

Although the audio input unit 13 corresponds to the general-purpose sound card 112, it is preferable to be able to process the bandwidth of 8KHz to 44KHz, and to be able to store it while streaming it to the Internet, and in some cases, a microphone input or a line input. It is desirable to be able to stream this stored sound file if necessary.

The camera 11 is a camera capable of pan, tilt, and zoom, and has a port for controlling the camera. That is, the pan / tilt / zoom controllable camera shown by reference numeral 114 in FIG. 2 is the port. As the camera port 114, an RS-232C port may be used, or a USB port or an IEEE 1394 port may be used as necessary. In particular, camera control can control not only the camera 11, but also video tape decks and other broadcasting equipment on a web browser, so it can be used in various fields depending on the application. It can also be applied to robotic camera systems.

The core polynet streamer unit 30 provides a real-time video / audio streaming Java applet 32, a codec module 33 having a video / audio secondary compression routine, and a stream serving while maintaining a constant sync of video and audio. It consists of a media mixing and network server. That is, the video / audio signal input through the encoder unit 10 is first moved to the Java applet 32, where the video / audio signal is selectively MJPEG streaming 120, QuickTime streaming 130 and MPEG4. Various streaming 140 and 145 media, such as streaming. In particular, when selecting the polynet video / audio codec 33 to be produced as a separate module, the web browser of the client terminal 20 is reduced while recompressing the compressed file of the general-purpose codec to a size of 1 Kbyte or less per frame. 21 has a function to stream so that you can watch through.

In the core polynet streamer portion 30, the streamer 31 is preferably ported to Windows NT, Windows 2000, Linux, MacOS, which is an operating system indicated by reference numeral 34, and is a modular type so that a separate server configuration is provided. It is not necessary. In particular, the MacOS version can be built using its own HTTP (154) server, so that it can be used as a streaming server upon installation.

The core polynet proxy portion 40 is designed to operate as a modular of the Apache server 42 running on Linux-based machines. In the case of the streaming server for Internet broadcasting, the work that was possible only by multiplying a plurality of server machines in the concept of reflectors can be processed simultaneously according to the basic 500 video streams even in a limited network bandwidth. As is well known to those skilled in the art, the reflector server needs exponential expansion by n times the same size as the basic video streaming server, but the polynet proxy unit 40 replicates the stream infinitely in its own server and selectively streams it according to the accessor count. The effect is similar to having dozens of reflector servers in one server machine. Based on this, cost savings and economical services are possible because the investment for network bandwidth expansion can be reduced.

The client terminal 20 is equipped with a web browser 21, Windows, Linux operating system 22. If only the client terminal 20, which is a PC that can be connected to the Internet 53, and a general web browser are prepared, all video and audio signals transmitted from the polynet streamer 30 can be viewed in real time without a separate plug-in. In general, DSL-class leased lines can receive high-definition video of 15 frames or more per second. At this time, the interface is configured to enable simple video recording and playback on a web browser. The specification of the preferred client terminal 20 PC of the present invention works the same on all PCs including Windows 98 and above operating systems, and Linux, and SUN, SGI, Macintosh, etc., in which the operating system operates.

The technical thought of the present invention for the polynet streamer system as described above is summarized as follows.

1. Real-Time Video / Audio Compression and Streaming Codec (33): It is made of Java applet and serves as an engine that enables streaming to a size of 1Kbyte or less per frame by going through frame-by-frame secondary compression after basic general purpose compression. .

2. Intelligent webcam function: Including Motion Detect in the video server engine, recording, saving, and notifying the administrator until movement stops in case of intrusion inside the designated location. Controllable.

3. 3D virtual reality engine 152 (156): Automatically pastes and edits still images captured by the video server so that the client can view the panoramic movie file in a web browser when called.

4. Integrated video codec engine: Simultaneously handles various standard video codecs such as MJPEG, AVI, QuickTime, MPEG1, MPEG4, etc., and inverts all video outgoing signals using these codecs in a polynet streamer server and retransmits to its own codec. 100% support of existing video streaming format.

Referring to the preferred operating environment of the polynet streamer system of the present invention for reference.

1. Server side: Microsoft Windows NT4 (SP3 or later), Microsoft Windows 2000 (Server and Professional / SP1 or later), Mac OS 8.5 or later (Mac OS X supported)

2. Client side: Intel Pentium 2MMX support (32MB RAM or more recommended, Hard disk 30MB or more), Netscape or Explorer Web browser (No Plug-in)

3. Network environment: 128K or higher dedicated line (server side), 56K or higher modem or DSL, leased line (client side)

According to the polynet streamer system, the video / audio compression codec of the QuickTime Java codec-based web camera and digital video recorder (DVR) solution maximizes the image quality and processing speed compared to the streaming of a conventional DVR and webcam. The so-called "All in One DVR" of size becomes possible. According to this, it can replace MJPEG and Wavelet Codec which are generally used now.

Streamer system of the present invention, also known as 'polynet streamer' is a so-called web camera solution for streaming audio and video in real time over the Internet or intranet. According to the present invention, the polynet streamer has its own web server application, and the client can access the designated polynet streamer server without a separate plug-in through a web browser. In addition, according to the network environment of the connected client, video streaming files of various bandwidths are transmitted, so that the best viewing of the video is automatically performed.

Real-time streaming video is served from a fixed IP address, and clients can use ISDN or high-speed networks to receive better quality and speed real-time video and audio through a web browser. Of course, clients with low bandwidth, such as modems, are different from dedicated line users, so you can view recorded video on demand (VOD) styles through a web browser using a separate FTP method. . PolyNet Streamer can capture the specified time zone image and save it as a still image or moving image. All of this is automated and can be done in one setting and can be viewed from anywhere.

Meanwhile, according to the present invention polynet streamer, it is possible to assign a password to the video and audio, and to perform QuickTime video recording and VOD file automatic generation with directory indexing, motion detection, and motion detection.

The present polynet streamer utilizes powerful server push technology to enable clients to watch real-time video and audio without the need for a separate application or plug-in. The real-time video according to the present invention can be viewed using only a web browser. Since the standard HTTP protocol is used, streaming video can be viewed without any difficulty even if the client is inside a firewall. For browsers that don't support server push, you can see the updated video simply by reloading.

According to the polynet streamer of the present invention, the following unique functions can be performed.

-Use Polynet Streamer Java Applet with Audio Support

-USB and IEEE 1394 digital video support

Web-based execution of scripts

-Web browser based log-in

-Insert logo design, insert current time, insert background picture

-Provides video streaming that can be watched even inside the corporate firewall

-Various graphic editable formats such as creating, rotating, inverting and editing image files

-High-density compressed streaming of native 640 × 80 pixel high-resolution image files

-Provides the function to automatically record the video and save it as a file every specified time

-Minimize client traffic because it includes its own web server function

-If you have an existing web server, you can stream live video and audio with just a link.

The polynet streamer of the present invention may have unique features of video streaming as follows.

Streaming frame control

-Adjustable frame rate according to provided bandwidth

Strong server cache eliminates the need for separate disk I / O

-No plug-in on client side, no firewall patch

-Supports various graphic and video formats such as JPEG, PNG, PICT, GIF, and Quick Time

-Built-in server allows all media files to be processed on one streaming server

-Automatic generation of html for streaming video

Create editable image files

-Insert text into each image file (font adjustment, horizontal / vertical support, two color fonts)

-Logo insertion function

-Support various sized image streaming (separate network speed and image quality)

-Support multiple video capture cards (2 or more cameras simultaneously)

-Supports video streaming hijacking prevention function of external server

In the polynetwork streamer according to the present invention, the operating environment is preferably Mac OS (Power PC based), Linux, the network is Mac TCP or Open transport, leased line or scripter PPP, and the disk capacity is at least 2 deg. The operating system is at least System 8.1 and at least QuickTime 2.5.

On the other hand, the present invention polynet streamer can be a remote camera control system. That is, the polynet streamer of the present invention can control a remote camera in addition to the above-described basic functions, so that the camera of the pan, tilt and zoom functions can be connected to monitor the remote situation in real time. In addition, the polynet streamer of the present invention transmits not only video but also remote audio in real time and streams through a web browser.

Using the functions of the polynet streamer can be more effective in construction sites, education sites, cultural events, e-commerce, sports events, security, entertainment and video conferencing.

The camera support functions are as follows.

12x zoom and high speed auto focusing

-High speed pan tilt function

-Direct control function using remote controller

Composite and S-Video support

-Can be connected to modem and printer port

-Control of specific area of pan tilt function

-6 preset settings available (position, zoom, focus setting)

Looking at the support function by the software applied to the present invention as follows.

Live video streaming without plug-ins

-Image transfer in various resolutions

Control by HTML standard protocol

-Faster video transmission with built-in web server

-Unlimited camera position presets

-Images can be saved by input schedule

-Remote video recording support

-Automatic 3D virtual reality panorama file generation

-Bandwidth control and access limit

-Restriction of camera access through password assignment

-Camera control support for multiple users

-Separate streaming function for modem and low speed access

-Motion detection and auto tracking

-Caption and logo insertion function

-Control up to 6 cameras simultaneously

Although preferred embodiments of the present invention have been described in detail above, those of ordinary skill in the art will appreciate that the present invention may be made without departing from the spirit and scope of the invention as defined in the appended claims. It will be appreciated that various modifications or changes can be made. Therefore, changes in the future embodiments of the present invention will not be able to escape the technology of the present invention.

Claims (5)

In the streamer system, An encoder having a camera, a video input unit and an audio input unit; A client computer terminal capable of running a web browser and a Windows and Linux operating system; A core polynet streamer unit having a predetermined streamer, a real-time Java applet, and a video / audio codec and capable of operating systems of Windows, Linux, and Mac OS; It includes a proxy and apache server, and a core polynet proxy unit capable of operating systems of Windows and Linux; The encoder portion and the core polynet streamer portion are connected by a predetermined RS232C cable, the client computer terminal and the core polynet proxy portion are connected by the Internet, and the core polynet proxy portion and the core polynet streamer portion are connected to the Internet. A streamer system, characterized by being connected by. 2. The apparatus of claim 1, wherein the signal input by the video input unit of the encoder unit is NTSC, PAL, and the input method is RCA, S-Video, USB, IEEE 1394; Streamer system characterized in that the frequency that can be processed by the audio input unit of the encoder unit is 8KHz ~ 44KHz. The video / audio signal of claim 1, wherein the encoder unit includes a camera port capable of pan, tilt, and zoom, and uses a codec of the core polynet streamer unit using the camera port. Streamer system characterized in that the input to the camera control signal with. 2. The streamer system of claim 1, wherein the Java applet of the core polynet streamer unit streams video / audio in real time, and the codec includes a secondary compression routine of video / audio. The streamer system according to claim 1, wherein the core polynet proxy unit is configured to infinitely copy a stream in its own server and selectively stream the stream according to the accessor count.