KR20110009227U - High definition digital rf cctv system - Google Patents

Abstract

The present invention relates to a high resolution digital closed circuit TV system, comprising: photographing means for photographing an image; Image storage means for storing image information photographed from the photographing means; In the high resolution digital closed-circuit TV system comprising a; image output means for outputting the image information stored in the image storage means, wherein the photographing means are grouped into a plurality is provided in one or more photographing group, the photographing group is a plurality of And a processing unit for processing the image information merged by the image merger and the image information merged by the image merger, wherein the one or more shooting groups are connected to the image combiner, respectively, and the image combiner comprises: And combining the merged image information merged by the at least one photographing group into a signal modulated at different frequencies and transmitting the combined image information to the image storing means.
As a result, a simplified cable connection can be realized by grouping a plurality of photographing means, processing and combining image information photographed by each photographing means, and transmitting the same to a video storing means by using a single coaxial cable or an existing line. have.
In addition, in applying the high resolution digital CCTV system, the installation cost can be reduced by using the existing coaxial cable line as it is.

Description

High resolution digital closed circuit TV system {HIGH DEFINITION DIGITAL RF CCTV SYSTEM}

The present invention relates to a high-resolution digital closed-circuit TV system, and more particularly, the present invention was created to solve the above problems, an object of the present invention is to group a plurality of photographing means, each shooting The present invention relates to a high resolution digital closed circuit TV system in which a simplified cable connection can be realized by processing and combining image information photographed by a means and transmitting the same to a video storage means by using a single coaxial cable or an existing line.

In general, a closed circuit tele-vision (CCTV) system is a system for acquiring images by photographing a subject or an object, and such a CCTV system is installed in general houses, department stores, banks, factories, and exhibition halls to prevent theft. In addition, it is widely used for monitoring to check the operation status of the machine or process flow easily.

The above-described CCTV system is composed of a monitor that outputs images captured by one or more cameras photographing a surveillance object to a screen, and a VCR or digital storage device that records and reproduces the captured images.

In the camera, there are various kinds of cameras such as a dome-type surveillance camera, a general surveillance camera, a zoom surveillance camera, and an infrared surveillance camera, and one or more cameras are operated simultaneously or sequentially according to the monitoring target and location, and existing VCR and Record video using DVR (Digital Video Recorder) and display single or divided display through monitor.

In particular, in recent years, a high resolution digital camera having a dramatically improved image quality is being widely used, and such a high resolution digital camera has been applied to a closed circuit TV system to realize precise shooting of an installed area.

In a closed circuit TV system to which a conventional high resolution digital camera is applied, data transmission between a camera and a storage device is adopted in two ways as described below.

First, as an uncompressed HD digital CCTV system, the video image information is transmitted as a HD-SDI signal to a storage device without compressing the video image information, and then stored in a storage device after compression.

However, in the case of the above method, there is a problem in that attenuation of the signal is prevented by installing a repeater, that is, a repeater, in a cable connection of 150 m or more. There was a problem.

The second is a compressed HD digital IP CCTV system, which compresses HD-level digital image information obtained from a camera with a digital video codec such as H.264 / AVC, and then transmits the IP over a network to be received and stored in a storage device. That's the way.

However, in the above-described method, there is a problem that the number of installation of physical cameras is limited because the amount of data increases as the number of cameras increases by transmitting data using a network, exceeding the maximum data transfer capacity allowed by the network.

In addition, the transmission method has a problem that the transmission distance of the network cable is up to about 300m and the installation of a hub is required when the transmission is required as a distance longer than that.

The present invention was created to solve the above problems, and an object of the present invention is to group a plurality of photographing means, and to process and combine the image information photographed from each photographing means to a single coaxial cable or a conventional It is to provide a high resolution digital closed circuit TV system that can be implemented by a simplified cable connection by transmitting to the image storage means by the use of the line.

Still another object of the present invention is to provide a high resolution digital closed circuit TV system in which the installation cost can be reduced by using an existing coaxial cable line in applying a high resolution digital CCTV system.

The above object, according to the present invention, the photographing means for photographing the image; Image storage means for storing image information photographed from the photographing means; In the high resolution digital closed-circuit TV system comprising a; image output means for outputting the image information stored in the image storage means, wherein the photographing means are grouped into a plurality is provided in one or more photographing group, the photographing group is a plurality of And a processing unit for processing the image information merged by the image merger and the image information merged by the image merger, wherein the one or more shooting groups are connected to the image combiner, respectively, and the image combiner comprises: The merged image information merged by the at least one photographing group may be achieved by a high resolution digital closed circuit TV system which combines the merged image information into signals modulated at different frequencies and transmits them to the image storage means.

The photographing means may include: a photographing unit photographing a subject to obtain image information; An image processor converting the image information acquired by the photographing unit into digital image information; And an image compressor for compressing the image information converted by the image processor.

The processing means may include: an image modulator for modulating the image information merged by the image merger into a frequency of an intermediate frequency (IF) band; A channel adder for giving a channel ID to the signal modulated by the image modulator; A frequency converter for upconverting the signal modulated with the frequency to a predetermined frequency band according to a channel ID given by the channel granter; And an amplifying unit for amplifying the upconverted image signal by the frequency converter and transmitting the amplified image signal to the image combining unit.

In addition, the image combiner may be provided to combine the modulated image information modulated at one or more frequencies input from the at least one photographing group and transmit it to the image storage means.

On the other hand, the image storage means, the image tuning unit for outputting the transport stream data is tuned to the frequency is provided in a number corresponding to the at least one photographing group is modulated at a frequency corresponding to the channel ID; An image extracting unit extracting image information from the transport stream data inputted from the image adjusting unit; A temporary storage unit that temporarily stores the image information extracted by the image extraction unit; An image storage processor for removing unnecessary image information generated by different data formats among the image information stored in the temporary storage unit; And an image storage unit configured to store image information processed by the image storage processor.

The image output means may include one or more monitors for outputting image information stored in the image storage unit.

Here, the image combiner and the image storage means may be interconnected as a single cable.

According to the present invention, a plurality of photographing means are grouped, and the image information photographed by each photographing means is processed and combined to be transmitted to the image storing means by using a single coaxial cable or an existing line, thereby simplifying cable connection. Can be.

In addition, in applying the high resolution digital CCTV system, the installation cost can be reduced by using the existing coaxial cable line as it is.

The accompanying drawings are for understanding the technical idea of the present invention together with the specific contents for the implementation of the above-described design, the present invention is not limited to the matters shown in the following drawings.
1 is a block diagram illustrating a high resolution digital closed circuit TV system according to the present invention.

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

Prior to this, the terms used in the present specification and claims should not be construed in a dictionary sense, and the inventors should, on the principle that the inventor can properly define the concept of a term to describe its design in the best way Should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the configurations shown in the embodiments and drawings described herein are only preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, and various equivalents may be substituted for them at the time of the present application. It is to be understood that water and variations may exist.

1 is a block diagram illustrating a high resolution digital closed circuit TV system according to the present invention.

Referring to FIG. 1, a high resolution digital closed circuit TV system according to the present invention includes: photographing means 100 for photographing an image; Image storage means (200) for storing image information photographed from the photographing means (100); In the high resolution digital closed-circuit TV system comprising a; image output means 300 for outputting the image information stored in the image storage means 200, the photographing means 100 is grouped into a plurality of groups provided in at least one shooting group The photographing group includes an image merger 70 for merging image information photographed by the plurality of photographing means 100 and a processing means 80 for processing image information merged by the image merger 70. In addition, the one or more photographing groups are each connected to the image combiner 150, the image combiner 150 is a signal modulated at a different frequency to each merged image information merged by the at least one photographing group It is combined to be sent to the image storage means 200.

Here, the photographing means 100 is a component for capturing a subject or a predetermined region in high resolution to obtain image information thereof, and converting the obtained image information into a digital signal and performing compression.

That is, the photographing means 100 includes: a photographing unit 10 which photographs a subject to obtain image information; An image processing unit 20 for converting the image information acquired by the photographing unit 10 into digital image information; And an image compressor 30 compressing the image information converted by the image processor 20.

Here, the photographing unit 10 is a component for acquiring image information, and may be implemented as a charge-coupled device (CCD) or a complementary metal oxide semiconductor (CMOS) camera capable of capturing a high-resolution, HD-class image. The photographing unit 10 may be provided to transmit the obtained image information to the image processing unit 20.

In addition, the image processing unit 20 is a component for converting the analog image information acquired by the photographing unit 10 into digital image information, and may include an A / D converter and a data processor.

Here, the image compression unit 30 is a component that receives the digitized image information from the image processing unit 20 and compresses the digitized image information, and the digitized image information is MPEG4 (Motion Picture Experts Group 4), MPEG2 (Motion Picture) Experts Group 2), H.264 / Advanced Video Coding (AVC), etc. may be provided to perform the compression by transmitting the compressed image information to the image merger 70.

Here, the image merging unit 70 is a component for merging image information captured, converted and compressed by each photographing means 100. The image merging unit 70 merges the image information with a capacity of 19.3 Mbps, and the merged image information will be described later. It may be provided to transmit to the processing means (80).

The processing means (80) includes: an image modulator (40) for modulating the image information merged by the image merger (70) into a frequency of an intermediate frequency (IF) band; A channel granting unit (50) for giving a channel identification (identification) to the signal modulated by the image modulator (40); A frequency converter (60) for upconverting the signal modulated with the frequency to a predetermined frequency band according to a channel ID (identification) given by the channel granter (50); And an amplifier 90 for amplifying the image signal upconverted by the frequency converter 60 and transmitting the amplified image signal to the image combiner 150.

Here, the image modulator 40 is a component that modulates the image information merged by the image merger 70 to a frequency of a predetermined band, such as 8VSB (8Vestigial Side Band), OFDM (Orthogonal Frequency Division Multiplexing), or the like. Modulation modulates the frequency of the intermediate frequency (IF) band.

In addition, the channel granting unit 50 plays a role of granting a channel ID to the modulation of the merged image information, that is, a signal whose modulation is completed at a frequency of an intermediate frequency band.

In addition, the frequency converter 60 up-converts (modulates to a higher frequency band) a signal modulated to the corresponding intermediate frequency according to the channel ID given by the channel granter 50 to a predetermined frequency band. It transmits the up-converted video signal to the amplifier 90.

Here, the up-converted video signal input from the frequency converter 60 may be input to the image combiner 150 via the amplifier 90.

Here, the image combiner 150 may be provided to combine the modulated image information modulated by one or more frequencies input from the one or more photographing groups, and transmit the modulated image information to the image storage means 200.

That is, signals modulated at different frequencies, respectively input by a plurality of photographing groups, by the image combiner 150 may be combined and transmitted to the image storage means 200.

Here, the identification of the frequency modulated signal transmitted from each photographing group, that is, the merged image information may be distinguished by the frequency designated by the channel grant unit 50.

In addition, the image combiner 150 and the image storage means 200 to be described later may be interconnected as a single cable, the cable may be provided by any one of a coaxial cable, optical cable, UTP cable.

On the other hand, the image storing means 200 is provided with a number corresponding to the at least one photographing group, the image adjusting unit for receiving a signal modulated at a frequency corresponding to the channel ID and tuned to the frequency to output the transport stream data 210; An image extracting unit 220 for extracting image information from the transport stream data inputted from the image adjusting unit 210; A temporary storage unit 230 for temporarily storing image information extracted by the image extracting unit 220; An image storage processor 240 for removing unnecessary image information generated by different data formats among the image information stored in the temporary storage unit 230; And an image storage unit 250 for storing the image information processed by the image storage processor 240.

Here, the image synchronizer 210 is a component for separating a modulated signal with a frequency having a channel ID corresponding to the image tuner 210 among the combined signals input from the image combiner 150. As a result, it is tuned to the signal modulated by the frequency to separate transport stream data and transmits it to the image extractor 220.

In addition, the image extracting unit 220 is a component for extracting only data for image information from the transport stream data input from the image adjusting unit 210, and extracts the extracted image information from the temporary storage unit 230. Can be arranged to transmit.

The image information obtained by the image extractor 220 may be temporarily stored in the temporary storage unit 230, and the information may be finally stored in the image storage unit 250 via the image storage processor 240. .

Here, the image storage processor 240 is unnecessary image information inserted into the image information having a different format of the image information, that is, other image data formats such as MPEG4, MPEG2, etc. of the image information stored in the temporary storage unit 230 Serves to remove it.

On the other hand, the image information stored in the image storage unit 250 is transmitted to the image output means 300 in accordance with the user's control signal may be integrated or divided in real time and output, preferably, the image output means 300 ) May be provided as one or more monitors for outputting image information stored in the image storage unit 250.

As described above, the high resolution digital closed circuit TV system according to the present invention thereby groups a plurality of photographing means, and processes and combines the image information photographed by each photographing means to produce a single coaxial cable or an existing line. By using the transmission to the video storage means can be implemented a simplified cable connection, in applying the high-resolution digital CCTV system, the installation cost can be reduced by using the existing coaxial cable line as it is.

As described above, although the present invention has been described by way of limited embodiments and drawings, the technical idea of the present invention is not limited thereto, and the person of ordinary skill in the art to which the present invention belongs, Various modifications and variations will be possible within the equivalent scope of the utility model registration claims to be described below.

* Description of the symbols for the main parts of the drawings *
10: photographing unit 20: image processing unit
30: image compression unit 40: image modulator
50: channel grant 60: frequency converter
70: video merge unit 80: processing means
90: amplification unit 100: recording means
150: video combiner 200: video storage means
210: image synchronization unit 220: image extraction unit
230: temporary storage unit 240: image storage processing unit
250: image storage unit 300: image output means

Claims (7)

Photographing means for photographing an image;
Image storage means for storing image information photographed from the photographing means;
In the high resolution digital closed circuit TV system comprising; image output means for outputting the image information stored in the image storage means,
The photographing means may be grouped into a plurality and provided as one or more photographing groups,
The photographing group includes an image merging unit for merging image information photographed by the plurality of photographing means and processing means for processing image information merged in the image merging unit,
Each of the one or more shooting groups is connected to an image combining unit, and the image combining unit combines the merged image information merged by the one or more shooting groups into a signal modulated at different frequencies and sends the combined image information to the image storing means. High resolution digital closed circuit TV system. The method of claim 1,
The photographing means,
A photographing unit which photographs a subject to obtain image information;
An image processor converting the image information acquired by the photographing unit into digital image information;
And a video compression unit compressing the image information converted by the image processing unit. The method of claim 2,
The processing means,
An image modulator for modulating the image information merged by the image merger into a frequency of an intermediate frequency (IF) band;
A channel adder for giving a channel ID to the signal modulated by the image modulator;
A frequency converter for upconverting the signal modulated with the frequency to a predetermined frequency band according to a channel ID given by the channel granter;
And amplifying unit for amplifying the upconverted image signal by the frequency converter and transmitting the amplified image signal to the image combining unit. The method of claim 3, wherein
And the image combiner combines modulated image information modulated by one or more frequencies inputted from the one or more photographing groups and transmits the modulated image information to the image storing means. The method of claim 4, wherein
The image storage means,
An image tuning unit provided with a number corresponding to the at least one photographing group and receiving a modulated signal at a frequency corresponding to the channel ID to output transport stream data tuned to the frequency;
An image extracting unit extracting image information from the transport stream data inputted from the image adjusting unit;
A temporary storage unit that temporarily stores the image information extracted by the image extraction unit;
An image storage processor for removing unnecessary image information generated by different data formats among the image information stored in the temporary storage unit;
High resolution digital closed circuit TV system comprising a; image storage for storing the image information processed by the image storage processing unit. The method of claim 5, wherein
The image output means includes at least one monitor for outputting image information stored in the image storage unit. The method of claim 1,
The image combining unit and the image storing means are connected to each other as a single cable high resolution digital closed circuit TV system.

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