KR20010064790A - Remote communication method in digital video recorder system - Google Patents

Abstract

PURPOSE: A remote communication method of DVR(digital video recorder) is provided to improve watch performance of a DVR system used to a watch system by putting a command manager to process command data and a data manager to process image data each at a server and a client, and transmitting command data and image data using a LAN(local area network) through a computer socket. CONSTITUTION: A camera(201) monitors a specific place. A sensor(202) senses moving etc of the specific place. A server(203) controls the camera(201) and the sensor(202), and performs remote communication. A client(204) communicates with the server(203) and sees an image to want. A command manager to process command data and a data manager to process image data are putted each at the server(203) and the client(204). The command data and the image data is transmitted using a LAN through a computer socket.

Description

Remote communication method in digital video recorder system

The present invention relates to a remote communication method of a DVR (Digital Video Recorder) system, and more particularly, to a remote communication method of a DVR system which can improve surveillance performance provided by a DVR system by freeing data transmission using a LAN. It is about.

The DVR system is to replace the analog CCTV (Closed Circuit TV) system used as a conventional surveillance system. The DVR system converts an analog image input from a camera into digital data and stores it on a disk. System.

In general, such a DVR system monitors simultaneously by connecting several cameras to a computer, and connects a sensor to improve the monitoring capability, and stores, transmits and alarms the video of the corresponding camera by detecting the sensor. It performs several control functions. Then, if necessary, the recorded and stored video can be transmitted to a remote site to view an image to be monitored even at a remote site.

Conventional DVR system transmits the video to remote location through public switched telephone network (PSTN), integrated services digital network (ISDN), or leased line using com port, which is a serial port of computer do.

This will be described briefly with respect to the remote communication method of a conventional DVR system with reference to the drawings.

1 is a block diagram showing a conventional DVR system.

Referring to FIG. 1, a conventional DVR system includes a camera 101 for monitoring a specific place, a sensor 102 for detecting a movement of a specific place, and a server as a DVR for controlling and remotely communicating them. 103 and a client 104 for communicating with the server 103 and viewing a desired image from a remote location.

Referring to the operation of the conventional DVR system 103 as described above, the image input through the camera 101 is input to the server 103, the server 103 monitors the image and the image on the disk as needed Save it. In particular, when a sensor is detected, the operator is notified that a change has occurred in the place to be monitored through an alarm, or the screen is recorded and automatically transmitted to a remote site.

Then, the server 103 periodically reads the comfort and checks which command is present from the client 104, and if a command is input, the server 103 performs a corresponding command. In this case, the command transmitted from the client 104 may be a camera on, off, camera pan tilt adjustment, mode setting, sensor on, off, or image of the server 103. Data retrieval, image transmission to remote sites, and so on.

Here, the client 104 connects to the server 103 through a PSTN or ISDN using a modem, and accordingly, when transmitting the image data from the server 103 to the client 104, the client 104 transmits the data via comfort.

However, if the data is transferred to the comfort of the computer as described above, other data cannot be transmitted during the data transfer. For example, when image data is transmitted from the server 103 to the client 104 at the request of the client 104, the image data cannot be transmitted by sensor sensing. In addition, when a command for another control function is transmitted during data transmission, there is a problem in that all data transmitted must be searched to find data related to the command.

The present invention was created to solve the above problems, and by connecting a server and a client using a LAN (LAN) in a DVR system, a remote of a DVR system capable of transmitting other data even during data transmission. The purpose is to provide a communication method.

1 is a block diagram showing a conventional DVR system.

2 is a block diagram showing a DVR system according to the present invention.

3 is a diagram illustrating a remote communication method between a command manager and a data manager of a DVR system according to the present invention.

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

101, 201 ... Camera 102, 202 ... Sensor

103, 203 ... Server 104, 204 ... Client

301, 303 ... Command Manager 302, 304 ... Data Manager

In order to achieve the above object, the remote communication method of the DVR system according to the present invention, a camera for monitoring a specific place, a sensor for detecting the movement of the specific place, and the like, a DVR for controlling and remote communication A DVR system comprising a server as a client and a client for communicating with the server and viewing a desired image from a remote location, each having a command manager for processing command data and a data manager for processing image data, respectively. The command data and the image data transmission are transmitted using a LAN through a socket of a computer.

Here, the command manager and the data manager separately process the command data and the image data, and preferably generate a thread to process the command data and the image data in the background.

In addition, when the client is connected to the client to transmit the image data while the listen program (listen program) is running, it is preferable to automatically connect with the listen program to transmit the image data.

The present invention can transmit other command data or video data even during data transmission, and can automatically connect and transmit video from a server to a client in an emergency, thereby improving the surveillance performance of the DVR system used in the surveillance system.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 is a view showing a DVR system according to the present invention, Figure 3 is a view showing a remote communication method of the command manager and data manager of the DVR system according to the present invention.

2 and 3, the DVR system according to the present invention has the same basic configuration as the conventional DVR system. That is, a camera 201 for monitoring a specific place, a sensor 202 for detecting a movement of a specific place, and the like, a server 203 as a DVR for controlling and remotely communicating with the server, and the server 203 It is composed of a client 204 for communicating and viewing a desired image from a remote location.

However, the DVR system according to the present invention is characterized in that the server 203 and the client 204 are connected to the LAN of the computer. Accordingly, the DVR system of the present invention has the command managers 301 and 303 for processing command data and the data managers 302 and 304 for processing video data, respectively, in the server 203 and the client 204, and the command is executed. Data and video data transmission is transmitted by using a LAN through a computer socket.

The remote communication method of the DVR system according to the present invention as described above will be described in detail.

In the DVR system according to the present invention, the command managers 301 and 303 and the data managers 302 and 304 separate and process the command data and the image data.

First, the command manager 301 of the client 204 connects to the command manager 303 of the server 203, and sets the camera on, off, camera pan tilt adjustment, mode setting, sensor on, off, or image data search. Command data such as image transmission to a remote location. Then, the command manager 303 of the server 203 creates a thread and executes the corresponding command in the background.

In particular, when there is a command of image transmission to a remote location, the corresponding video data is transmitted to the remote location using the data manager 304. The data manager 304 of the server 203 is the data manager 302 of the client 204. Request a connection and transmit the video data to the data manager 302 of the client 204.

After the transmission of the image data, the data manager 304 of the server 203 and the data manager 302 of the client 204 are disconnected, and the operations of the server 203 and the client 204 continue. do.

In this case, the present invention generates and processes a thread when processing the command data, so that data is always transmitted between the server 203 and the client 204 even if there is data transmission between the server 203 and the client 204. It becomes possible. In other words, the command managers 301 and 303 create threads to perform mutually transmitted command data, and constantly monitor the socket to which the server 203 and the client 204 are connected, and then another command data is executed. Once sent, it creates another thread and performs the control accordingly.

On the other hand, there are three cases in which image data is transmitted from the server 203 to the client 204, when the current screen is remotely monitored, and when the client 204 searches for a desired image and transmits a corresponding image. There are three cases of emergency transmission.

Here, the emergency transmission is to automatically transmit the image data by connecting the image of the camera designated by the sensor detection to the client 204. At this time, even if the client 204 does not execute a separate program for connecting the server 203, if only the listen program for monitoring the socket to which the server 203 and the client 204 are connected is executed as described above, the program is executed. The server monitors the socket and is automatically performed when image data is transmitted to display the transmitted image on the display window of the client 204. By generating and processing such an emergency transmission thread, the client 204 can access the server 203 and transmit video data such as a current screen or a searched screen even during an emergency transmission.

In addition, in order to speed up the data transmission, the image data is preferably stored in a random access memory (RAM) drive and then transmitted.

As described above, even when the client 204 connects to the server 203 and transmits image data, command data and image data such as camera pan tilt adjustment, transmission of the current screen, and emergency transmission can be transmitted.

As described above, according to the remote communication method of the DVR according to the present invention, by transmitting the data to the LAN through the socket and processing the processing of the command data by creating a thread, it is not necessary to retrieve all the transmitted video data, the server When there is data transmission between the client and the client, other command data or video data can be transmitted. Therefore, the video data of the DVR used in the surveillance system can be transmitted at any time, thereby improving the surveillance performance.

Claims (4)

It consists of a camera for monitoring a specific place, a sensor for detecting movement of a specific place, a server as a DVR for controlling and remotely controlling them, and a client for communicating with the server and viewing a desired image from a remote place. In DVR system, A DVR comprising a command manager for processing command data and a data manager for processing image data, respectively, on the server and the client, and transmitting the command data and the image data transmission using a LAN through a socket of a computer. Remote communication method of the system. The method of claim 1, And the command manager and the data manager separate and process the command data and the image data. The method of claim 1, The remote communication method of the DVR system, characterized in that the processing of the command data and the image data by creating a thread to process in the background. The method of claim 1, And a connection program is automatically connected to the listen program when the server is connected to the client to transmit the video data while the listen program is executed on the client.