KR20080101540A - Encoder and decoder system for mutil-channel image data processing and dvr system which use the same - Google Patents

Abstract

An encoder and decoder system for processing multi channel image data and a DVR system thereof are provided to mount encoding modules in order to receive plural channels and divide image data to be inputted into an encoder and another encoder in order to prevent image data loss through another divided module even though malfunction of plural modules occurs. A first encoder(10) includes a plurality of encoder modules(11). The first encoder receives and encodes image data obtained by a camera per the number of encoder modules. A controlling unit(11c) divides the plural image data inputted in the first encoder respectively and inputs the data into a second encoder(10a) which is the same as the first encoder. The controlling units are respectively in the first and second encoders. The controlling unit monitors whether the encoder module malfunctions. The second encoder encodes when the first encoder malfunctions.

Description

Encoder and decoder system for mutil-channel image data processing and DVR system which use the same}

1 is a configuration diagram of a DVR system applying the encoder and decoder system according to the prior art,

2 is a schematic structural diagram of an encoder or decoder system according to the prior art;

3 is a schematic block diagram of an encoder or decoder according to the prior art;

4 is a schematic side view illustrating an encoder or decoder according to the present invention;

5 is a detailed configuration diagram of an encoder or a decoder according to the present invention;

6 is a detailed configuration diagram of an encoder system according to the present invention;

7 is a detailed configuration diagram of a decoder system according to the present invention;

8 is a front view illustrating a state in which an encoder and a decoder system according to the present invention are mounted in a block;

9 is a block diagram of a DVR system to which an encoder and a decoder system according to the present invention are applied.

<Explanation of symbols for major symbols in the drawings>

10: first encoder 10a: second encoder

11: encoder module 20: first decoder

20a: second decoder 30: block

40: camera 50: switch

60: storage 70: control

80: display unit

The present invention relates to an encoder or decoder system for processing multi-channel image data and a DVR system using the same. More specifically, a malfunction occurs in an encoder device or a decoder device when encoding or decoding image data input from a plurality of cameras. The present invention relates to an encoder or decoder system for processing multi-channel image data and to a DVR system using the same.

Digital video recorder (DVR) is the hot spot in security surveillance based on digital video compression technology. The DVR is distinguished from a conventional analog storage device (VCR). The DVR may digitize an input image and compress and store it in a hard disk (storage) that is a storage device.

The biggest advantage of DVR is that it does not require maintenance cost because it does not need periodic exchange and storage of recording tape unlike the existing analog method. In addition, it is possible to search quickly in case of an accident, obtain clear picture quality, and receive the video in real time through a network such as a telephone line or the Internet, and grasp the situation and actively respond to it. Unlike conventional analog (VCR), there is no functional superiority.

The DVR system installs a number of cameras in areas requiring security. It is mainly used to check the security status of buildings, parking lots, banks, airports, casinos, ports, hotels, prisons, etc. in real time. The use of DVR is similar to that of a general closed circuit (CCTV), but the operation method is digital. In addition, closed-circuit television (CCTV) records the video captured by the surveillance camera with video tape and records and reads it through the VCR, whereas the DVR converts the video data inputted by the analog surveillance camera into a digital image, It is characterized by converting into digital video signal and storing it.

The DVR system is provided with an encoder for encoding an image obtained from a camera and a decoder for converting a digital signal into an analog signal for outputting compressed data stored in a storage to a monitor. .

1 illustrates a configuration of an encoder and a decoder device in a DVR system according to the prior art. An encoder 200 corresponding to the number of cameras 100 is provided in a block and a redundancy encoder 210 (secondary encoder). There is one more. The decoder 300 is similarly provided with a number corresponding to the number of image data outputs, and is further provided with a redundancy decoder 310.

2 is a schematic diagram of an encoder system. As shown in FIG. 2, each camera is connected to each encoder 200 by a video path selector 400. Switching to the sub-encoder 210 maintains there is no loss in image data transmission and storage.

At this time, the malfunctioning (or bad) encoder 200 is restored by the maintenance manager to resume normal operation.

3 is a schematic configuration diagram of one encoder. As shown in the figure, each component is mounted in each encoder 200, and one encoder 200 can accommodate only one camera.

Therefore, in order to receive images through many cameras, the same number of encoders is required, but this is limited by the space of the block in which the encoder is installed, and because two or more encoders are malfunctioning because the auxiliary encoder is limited to one. There is a problem that can not obtain the image data.

In order to solve the above problems, the present invention implements a plurality of encoding modules that can be encoded in an encoder to accommodate a plurality of channels, and splits image data inputted to the encoder into another identical encoder. Its purpose is to ensure that even if several modules malfunction at once, they can be maintained without losing video data through different branches.

In addition, a plurality of decoding modules that can be decoded in one decoder are installed to accommodate a plurality of channels, and each of the image data inputted to the decoder is branched and input to another decoder that is identical to the decoder to cause a plurality of decoder modules to malfunction. Another purpose is to be able to maintain the video data without loss by another decoder.

The present invention for achieving the above object, in the encoder system for multi-channel image data processing to receive and encode a plurality of image data, a plurality of encoder modules are provided, the image obtained by the camera per number of the encoder module Splitting a plurality of video data input to the first encoder and the first encoder to receive and encode the data and input the same to the second encoder and the same as the first encoder, respectively to the first encoder and the second encoder It includes a control unit for monitoring whether the encoder module malfunctions, characterized in that the second encoder encodes when the first encoder malfunctions.

According to a preferred feature of the invention, the second encoder is characterized in that it operates only when the first encoder malfunctions.

According to another preferred feature of the present invention, the first encoder and the second encoder is characterized in that the encoder module and the LED unit for indicating whether the operation, and the power supply receiving power in common use.

According to another preferred aspect of the present invention, a decoder system for processing multi-channel video data that receives and decodes a plurality of video data includes a plurality of decoder modules, and receives and decodes video data per number of decoder modules. Splitting a plurality of video data input to the first decoder and the first decoder to be equally input to the second decoder and the same as the first decoder, respectively provided in the first decoder and the second decoder and the decoder module And a control unit for monitoring a malfunction of the first decoder, wherein the second decoder decodes when the first decoder malfunctions.

According to another preferred feature of the invention, the second decoder is characterized in that it operates only when the first decoder malfunctions.

According to another preferred feature of the present invention, the first decoder and the second decoder are characterized in that the decoder module commonly uses the LED unit for indicating whether the operation, and the power supply is supplied with power.

Another preferred feature according to the present invention is characterized by a DVR system using the encoder or decoder system for processing multi-channel video data.

Hereinafter, an embodiment of an encoder or decoder system for processing multi-channel image data and a DVR system using the same according to the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

The encoder system for processing multi-channel image data according to the present invention includes: a first encoder 10 having a plurality of encoder modules 11 and receiving image data acquired by a camera per number of the encoder modules 11; A plurality of image data input to the first encoder 10 are each branched and input to the same second encoder 10a as that of the first encoder 10.

In addition, the decoder system for processing multi-channel image data according to the present invention includes a plurality of decoder modules 21, a first decoder 20 for receiving image data stored per number of decoder modules 21, and A plurality of image data input to the first decoder 20 are each branched and input to the same second decoder 20a as the first decoder 20.

First, the encoder system will be described in detail.

In the DVR system, a plurality of cameras are installed in the field, and a cable connected to the camera is connected to the first encoder 10.

The first encoder 10 is composed of a plurality of encoder modules 11, it can accommodate the image data transmitted from the same number of cameras as the number of the encoder module (11) configured. As shown in FIG. 4, four encoder modules 11 are installed on both sides of the first encoder 10, and eight encoder modules 11 are installed. In this case, the encoder module 11 can be easily mounted / separated from the encoder (card type) to facilitate maintenance and change of the number of channels.

As shown in FIG. 5, the encoder modules 11 installed in plural have the same video input / output unit 11a which receives image data obtained from the camera with a cable, and encodes the input image data. An encoding unit 11b, a control unit 11c, and an interface unit 11d for transmitting the encoded image data to the switch 50 of the DVR system are included.

Eight of the encoder modules 11 configured as described above are mounted on the first encoder 10.

In addition, the first encoder 10 fixes the first encoder 10 to an LED unit 12 indicating an operation state, a power supply unit 13 receiving power, and a block (a shelf on which the encoder is mounted; 30). The front panel 14 is provided, but the conventional encoder system has only one encoder module in one encoder, and each of the LED unit 12, the power supply unit 13, and the front panel 14 per card are respectively provided. Although the first encoder 10 according to the present invention, since the eight encoder module 11 can use the LED unit 12, the power supply unit 13 and the front panel 14 in common, cost reduction Has a great effect.

The second encoder 10a identical to the first encoder configured as described above operates as one encoder system.

6 is a block diagram of an encoder system according to the present invention.

A plurality of cameras 40 (Nos. 1 to 8) installed outside are connected to the encoder module 11 of the first encoder 10. The cameras 1 to 8 connected to the first encoder 10 are branched to the second encoder 10a and connected to the encoder module 11 of the second encoder 10a in the same manner.

When more cameras are installed using this encoder system, 9 to 18 cameras are connected to other first and second encoders, and 19 to 27 cameras are connected to another first and second encoders. Will be installed.

When an image is acquired through the camera 40, each encoder module 11 encodes and is transmitted to the switch 50 through the interface unit 11d and stored in the storage 60 again. In this case, the control unit 11c of the first encoder 10 monitors the encoder module 11 and when one or several encoder modules 11 cannot perform encoding due to a malfunction or failure, the DVR system. Sends a malfunction signal to the control unit 70.

Then, when the control unit 70 instructs the second encoder 10a to perform the operation of the first encoder 10, the branched channel can perform encoding directly through the second encoder 10a. .

When the first encoder 10 is restored, the first encoder 10 returns to its original state, and the first encoder 10 performs encoding, and the second encoder 10a is always preparing for a malfunction of the first encoder 10.

Next, the decoder system will be described in detail.

The image acquired through the encoder system described above is stored in the storage 60 and monitored in real time or selectively retrieves and outputs the image data stored in the storage 60 as an analog signal in order to output the image data. You need a decoder to convert and output to the monitor.

The image data stored in the storage 60 is transmitted to the first decoder 20 through the switch 50 using an Ethernet network.

The first decoder 20 includes a plurality of decoder modules 21 and may accommodate the same number of image data (channels) as the number of the decoder modules 21 configured. As shown in FIG. 4, four decoder modules 21 are installed on both sides of the first decoder 20, and eight decoder modules 21 are installed. In this case, the decoder module 21 can be easily mounted on or detached from the decoder (card type) to facilitate maintenance and change of the number of channels.

As shown in FIG. 5, the decoder modules 21 installed in plural number include a video input / output unit 21a for receiving image data, a decoder 21b for decoding the input image data, and And a controller 21c and an interface unit 21d for transmitting the decoded image data to the external display unit.

Eight of the decoder modules 21 configured as described above are mounted on the first decoder 20.

In addition, the first decoder 20 is a front panel for fixing the first decoder 20 to the LED unit 22 indicating the operation state and the power supply unit 23 and the block (shelf; 30) that is supplied with power. (24) Although the conventional decoder system has one decoder module in one card, and each of the LED unit 22, the power supply unit 23 and the front panel 24 is provided per card. The first encoder 10 according to the present invention has a great effect on cost reduction because eight decoder modules 21 can use the LED unit 22, the power supply unit 23, and the front panel 24 in common. have.

The second decoder 20a identical to the first decoder 20 configured as described above operates as one decoder system.

7 is a block diagram of a decoder system according to the present invention.

The image data is transmitted to the first decoder 20 through the switch 50. In this case, image data is input to each of the eight decoder modules 21 of the first decoder 20.

The image data input to the first decoder 20 is branched to the second decoder 20a so that eight image data are equally input to each of the decoder modules 21 of the second decoder 10a.

When more image data is input using the decoder system, another first and second decoders receive eight different image data, and another first and second decoders input another eight image data. Receive.

When the image data is input, each decoder module 21 decodes and is output to an external monitor through the interface unit 11d. In this case, the controller 21c of the first decoder 20 monitors the decoder module 21, but if any one or several decoder modules 21 cannot perform encoding due to malfunction or failure, the DVR system. Sends a malfunction signal to the control unit 70.

Then, when the control unit 70 commands the second decoder 20a to perform the work of the first decoder 20, the branched channel can directly decode through the second decoder 20a. .

When the first decoder 20 is restored, the first decoder 20 returns to its original state and the first decoder 20 performs decoding, and the second decoder 20a is always waiting for a malfunction of the first decoder 20.

9 is a configuration diagram of a DVR system to which an encoder and a decoder system according to the present invention are applied.

Looking at the DVR system using the encoder system and the decoder system described above, the image data obtained through the camera 40 is encoded through the encoder system consisting of the first encoder 10 and the second encoder 20, the encoder system is external It is connected to the switch 50 to transmit the image data, which is stored in the storage 60 or transmitted to the decoder system.

In a plurality of encoder systems, multi-channel image data is input to the first encoder 10 and the second encoder 10a, which are one encoder system, and each encoder module 11 of the first encoder 10 is provided. If the controller 11c detects each encoder module 11 and a malfunction or an error occurs in one or several encoder modules 11 to perform the encoding operation, the controller 70 Send a malfunction signal). Then, the control unit 70 instructs the second encoder 10a to perform encoding so that the second encoder 10a performs encoding and the first encoder 10 stops encoding.

When the restoration of the first encoder 10 is completed, the control unit 70 instructs the first encoder 10 to perform a decoding operation performed by the second encoder 10a again.

The image data stored in the storage 60 or the image data transmitted through the switch 50 is converted into an analog signal through a decoder system and output to the display unit 80.

The video data is transmitted to the decoder system through the switch 50, and eight pieces of video data are branched and input to the first decoder 20 and the second decoder 20a, respectively.

Each decoder module 21 decodes eight image data in the first decoder 20, and the control unit 21c of each decoder module 21 monitors a malfunction. In this case, when one or more decoder modules 21 malfunction, the control unit 21c sends a signal to the control unit 70, and the control unit 70 decodes the second decoder 20a. Instructs to perform the operation.

Therefore, the second decoder 20a performs eight image data decoding operations performed by the first decoder 20.

When the first decoder 20 is restored, the control unit 70 stops the work of the second decoder 20a and causes the first decoder 20 to perform the work.

The present invention constructed and operated includes a plurality of encoder or decoder modules in one card, thereby greatly reducing the space consumption of the block in which the encoder / decoder is installed, and using two encoders or decoders for camera or image data. Because it accommodates a number of modules malfunctions, there is an advantage that the stability of the image data is secured by processing the image data from another card.

While the invention has been described and illustrated in connection with a preferred embodiment for illustrating the principles of the invention, the invention is not limited to the construction and operation as shown and described.

Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

The present invention constructed and operated as described above can accommodate multiple channels by providing a plurality of encoder or decoder modules in one encoder or decoder, thereby reducing space consumption of a block and accommodating many channels in one block. There is an advantage to that.

In addition, by accommodating multiple channels by two encoders or decoders, even if a plurality of encoders or decoder modules malfunction, the other encoders / decoders accommodate them all, thereby stably securing the image data without loss.

In addition, by configuring multiple encoder / decoder modules in one encoder / decoder, there is an effect that the production cost can be reduced by components that can be used in common.

In addition, the encoder / decoder module is easily mounted / separated for easy channel number change and maintenance.

Claims (7)

In the encoder system for multi-channel image data processing to receive and encode a plurality of image data, A first encoder having a plurality of encoder modules and receiving and encoding image data acquired by a camera per number of the encoder modules; And Splitting a plurality of video data input to the first encoder and input the same to the same second encoder as the first encoder, And a controller provided at each of the first encoder and the second encoder to monitor whether the encoder module is malfunctioning. The encoder system for processing multi-channel image data, characterized in that the second encoder encodes when the first encoder malfunctions. The method of claim 1, wherein the second encoder, An encoder system for processing multi-channel image data, wherein the encoder operates only when the first encoder malfunctions. The method of claim 1, wherein the first encoder and the second encoder, 2. An encoder system for processing multi-channel image data, characterized in that the encoder module commonly uses the LED unit and whether the power supply unit receives power. In the decoder system for multi-channel image data processing to receive and decode a plurality of image data, A first decoder having a plurality of decoder modules, for receiving and decoding image data per decoder module number; And Splitting a plurality of video data input to the first decoder and input the same to the second decoder and the same as the first decoder, And a controller provided in the first decoder and the second decoder to monitor whether the decoder module is malfunctioning. And the second decoder decodes the malfunction of the first decoder. The method of claim 4, wherein the second decoder, A decoder system for processing multi-channel image data, wherein the decoder operates only when the first decoder malfunctions. The method of claim 4, wherein the first decoder and the second decoder, Decoder system for processing multi-channel video data, characterized in that the decoder module uses the LED unit for indicating the operation and the power supply unit that is supplied with power in common. The DVR system according to any one of claims 1 to 6, wherein the encoder or decoder system for processing multi-channel video data is used.

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