KR20040086931A - The chip set method of video capture board using DEBI port in a PC based DVR system - Google Patents

Abstract

PURPOSE: A method for setting a video capture board chip of a DVR system under PC environment where a DEBI port is used is provided to apply a DEBI system to a part requesting a quick speed instead of an I2C bus system, thereby improving the operational speed of a video capture board. CONSTITUTION: A 16-channel video capture board(20) comprises as follows. Video decoders(21a,21b) convert analog video signals into digital video signals. Image processors(22a,22b) process the digital video signals in desired images. A PCI bridge(24) transceives setup data with the image processors(22a,22b). SDRAMs(23a,23b) temporarily store video data reconfigured in the image processors(22a,22b). A serial EEPROM(25) stores a device ID.

Description

The chip set method of video capture board using DEBI port in a PC based DVR system}

The present invention is a PC environment DVR system applying DEBI method to the part requiring speed instead of the I2C bus method used in the existing video capture board in order to speed up the operation speed of the image capture board which is necessary for the PC environment DVR system. More specifically, the chipseting method of the present invention is more specifically required for speed in addition to the conventional I2C bus method that exchanges data between chips in an image capture board that converts an analog video signal input from a conventional CCD camera into a digital video signal. How to set up video capture board chipset of PC environment DVR system using DEBI port which can improve the speed of PC environment DVR system by using high speed interface between chips using DEBI bus designed in addition It is about.

In general, the PC environment DVR system captures the video signal (analog signal) input from CCTV on the image capture board and converts it into high quality digital signal on the computer hard disk. Recording and retrieval function, monitoring function to divide and monitor multiple camera images on one monitor, and image transmission function to monitor recording search and real-time screen on telephone line, LAN, leased line and internet even in remote places. It is a multifunctional video digital recording and surveillance system equipment developed to accommodate.

However, in most PC environment DVR systems, the video capture board mounted on the PC main board is mainly chipseted by I2C bus to exchange data between chips. There are fatal drawbacks to slowing down. Therefore, some chips (screen split chips) that need to be transmitted by setting a lot of data have a problem of responding very slowly to the screen split of the user.

The present invention is to solve the above problems, an object of the present invention is the video capture board chipseting method of the PC environment DVR system that can drastically improve the operation speed of the video capture board necessary for the existing PC environment DVR system To provide.

Another object of the present invention is to apply the DEBI method to the part that requires high speed instead of the I2C bus method used as the current standard for setting between chips in the video capture board of the existing PC environment DVR system. To provide a video capture board chipseting method of the DVR system in the PC environment that can be improved.

1 is an overall configuration diagram of a PC environment DVR system according to the present invention.

2 is a block diagram showing a 16-channel video capture board of the PC environment DVR system according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: PC main board 20: 16 channel video capture board

21a, 21b: video decoder 22a, 22b: image processor

23a, 23b: SD RAM 24: PCI Bridge

25: Serial EPROM 30: Hard Disk Drive

40: BNC panel board 50: DI / DO panel board

60: control panel board 70: floppy disk drive

80: Ethernet card 90: I / O

100: video card

In order to achieve the above object, the image capture board chipseting method of the PC environment DVR system using the DEBI method of the present invention is an image connected to the PC main board to the analog video signal input from at least one CCD camera to shoot the monitoring target In a PC environment DVR system that captures a digital signal on the hard disk through a central processing unit (CPU), compresses and stores it on the hard disk, and displays the recorded digital image on a monitor. At least one video decoder for receiving analog video signals input from at least one camera and converting them into digital video signals; An image processor for dividing and synthesizing the digital video signal transmitted from each video decoder into a desired image; SDRAM for temporarily storing data when reconstructing an image in the image processor; A PC bridge capable of transmitting and receiving data to and from the image processor at high speed, and transferring setting data received through a central processing unit (CPU) of the PC main board at high speed; In the image capture board, which is connected to the PC bridge and includes a serial EEPROM for storing a vendor ID and a device ID of a subsystem, the PC bridge connects to video decoders through an I2C bus and to an image processor. The 8-bit parallel DEBI port in the PC-I Bridge connects to the DEBI bus extended out of the chip to interface.

Therefore, according to the above configuration, it is possible to connect externally from the 8-bit parallel DEBI port on the PC-I Bridge without connecting the PC-I Bridge and other chips in the image capture board mounted inside the PC environment DVR system. The DEBI bus is designed to connect to an image processor that requires processing speed so that it can quickly respond to the operating speed of the overall PC environment DVR system.

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

1 is an overall configuration diagram of a PC environment DVR system according to the present invention.

Referring to FIG. 1, a conventional PC environment DVR system for digital video recording includes a BNC panel board 40 in which analog video signals captured from at least one 16-channel camera photographing a surveillance object correspond to a back panel. When transmitted to the 16-channel image capture board 20 mounted on the PC main board 10 through the video capture board 20 converts the input analog video signal into a digital video signal, the PC main board (10) A central processing unit (CPU) (not shown) mounted on the NVR captures in real time from a DVR system that compresses a high-definition digital video signal converted by the image capturing board 20 and stores it on a hard disk of the hard disk drive 30. The displayed images are displayed on the monitor as a screen divided into a plurality of channels or a screen of a specific channel.

In addition, the DI / DO panel board 50 corresponding to the sensor panel is the image capture board described above.

If the movement of the object is detected by a plurality of detection sensors installed around the plurality of cameras 20 as described above, the image capture board 20 converts the input analog video signal into a digital video signal Then, the high quality digital video signal converted by the central processing unit is compressed and stored in the hard disk.

The PC main board 10 has an input / output device for operating with a keyboard and a mouse.

(90), video card (100) to display text and graphics on the monitor, Ethernet card to control the monitoring screen, download video, remote camera, etc. from the remote computer via the Internet (Ethernet Card) 80, a floppy disk drive 70, which can be used when updating or backing up programs to a PC environment DVR system, is connected.

In addition, the control panel board 60, which is provided with a selection switch and a corresponding display lamp, not shown, is electrically connected to the PC main board 10 described above, so that the user can replace the existing computer keyboard and mouse. Camera selection, screen split, camera pan / tilt can be operated easily.

2 is a block diagram showing a 16-channel video capture board of the PC environment DVR system according to the present invention.

Referring to FIG. 2, the 16-channel image capture board 20 includes video decoders 21a and 21b for converting analog video signals into digital video signals, image processors 22a and 22b for processing digital video signals into desired images, It consists of PC-I Bridge 24 that exchanges setting data with the image processor, SD RAMs 23a and 23b for temporarily reconstructing the image data reconstructed by the image processor, and a serial Y pyrom 25 for storing the device ID. .

The video decoders 21a and 21b receive analog image signals input from at least one camera, convert the analog image signals into digital image signals, and transmit them to the image processor 22a and 22b. 22b divides and synthesizes the transmitted digital video signal into a desired video, and temporarily converts the data into SDRAM when the image processor 22a and 22b reconstructs the video.

Stored in (23a, 23b).

In addition, the PC bridge (PCI Bridge) 24 is a PC I bridge 24 to transmit and receive the setting data entered through the central processing unit of the PC main board 10 with the image processor (22a, 22b) at high speed ) Connects to the video decoders 21a and 21b on an I2C bus, and the 8-bit parallel DEBI on the PCI bridge with the image processors 22a and 22b.

Connect using the DEBI bus extended out of the board from the port. Serial EEPROM 25 is coupled to the PCI Bridge 24 to store the vendor ID and device ID of the subsystem.

In addition, the DEBI port on the PC bridge board is a DEBI bus interface that extends the connection provided by the existing PC eye bus to the outside of the chip inside the multimedia PC bridge 24 to improve the speed of image transmission. ,

The I2C bus is also referred to as Inter-IC BUS and is a two-wire serial bus provided for a communication link between chips within a PCB board in a PC environment DVR system. Applied to communication with surrounding boards of environmental DVR system.

In this way, the 8-bit parallel DEBI in the PC-I Bridge 24 is connected to the PC-I Bridge 24 without connecting the PC-I Bridge 24 and the other chips in the image capture board 20 mounted inside the PC environment DVR system. It is difficult to design by connecting to image processor (22a, 22b), which is a screen split chip with a high data rate and transmission frequency by using a port, but it does not incur additional costs, and compared with the conventional I2C bus only method. By using I2C bus method and DEBI bus method, it shows a quick response speed to user's request, so it can make relatively fast operation speed that can quickly respond to the operating speed of the overall PC environment DVR system.

As described above, the present invention provides a chip by applying the DEBI bus method to a portion requiring high speed instead of the I2C bus used in the existing video capture board when the chipset of the video capture board connected inside the PC environment DVR system. By speeding up the interface between them, the operation speed of the video capture board in the PC environment DVR system can be improved.

Claims (1)

After capturing the analog video signal from at least one CCD camera that captures the surveillance object from the video capture board connected to the PC main board, converting it into a high quality digital signal on the hard disk through the central processing unit, compressing and storing it on the hard disk. In the PC environment DVR system where the user displays the recorded digital image on the monitor, At least one video decoder for receiving analog video signals input from at least one camera and converting them into digital video signals, and an image processor for dividing and synthesizing the digital video signals transmitted from the respective video decoders into desired images. (Image Processor), the SDRAM (SDRAM) for temporarily storing data when reconstructing the image in the image processor, and the data can be exchanged with the image processor at high speed and entered through the central processing unit of the PC main board In the image capture board comprising a PCI bridge for transmitting configuration data at high speed, and a serial EEPROM connected to the PC bridge to store the vendor ID and the device ID of the subsystem. The PC Bridge is equipped with video decoders Image capture board of PC environment DVR system using DEBI port which is connected to I2C bus and connected to image processor from 8-bit parallel DEBI port in PCI Bridge to DEBI bus extended out of chip. Chipsetting method.