KR101197794B1 - System and method for monitoring using optical fiber cable - Google Patents

Abstract

The present invention relates to a monitoring system and a monitoring method using a fiber optic cable. The present invention provides a camera apparatus for transmitting an optical signal generated by recognizing an external subject through an optical fiber cable without undergoing a separate processing process; And a storage device which receives the optical signal and stores the image signal through an image processing process for converting the optical signal into digital image data and a codec process for compressing the optical signal. Characterized in that it comprises a.

Description

Monitoring system and monitoring method using fiber optic cable {SYSTEM AND METHOD FOR MONITORING USING OPTICAL FIBER CABLE}

The present invention relates to a technique for monitoring an external object using a camera device and a transmission technology of photographed image data. More specifically, by providing a structure different from that of a conventional camera device, an optical signal collected by a camera device in a storage device is directly transmitted. It relates to a monitoring system and a monitoring method using a fiber optic cable for receiving.

1 is a view showing a monitoring system using a coaxial cable according to the prior art.

Referring to FIG. 1, a conventional monitoring system using a coaxial cable is a technique widely used in the related art, and includes a CCD sensor a 11, an image processor a 12, and a digital to analog converter. ADC ': 13, a camera device a (1), and a digital to analog converter (Analog to Digital Converter, hereinafter' ADC ': 15), a storage device consisting of a codec a (16) and a storage unit (17) ( Include 3).

The data transmission process from the camera device a (1) of the surveillance system using the coaxial cable having such a configuration to the storage device 3 will be described. First, the optical signal is converted into an electrical signal by the CCD sensor a11 and transmitted to the image processor a12. Then, the image processor a (12) converts an electrical signal into digital image data and transmits it to the DAC 13, the DAC 13 converts the digital signal into an analog signal to the ADC 15 through the coaxial cable (2) To send.

Accordingly, when the ADC 15 receiving the analog video signal is converted into digital video data and transmitted to the codec a 16, the codec a 16 performs compression to store the digital video data to the storage a 17. Save it.

However, in the case of using such a coaxial cable, image information transmission has many problems. That is, according to the transmission of the analog signal on the coaxial cable, there is a restriction in increasing the resolution of the CCD sensor a (11), the loss of the video signal and the limitation of the transmission distance occurs depending on the quality of the coaxial cable (2) In the case of long-distance transmission, a large amount of cost is required due to the addition of a copper cable (2), and a large number of people and an installation area are required for installation.

2 is a view showing a monitoring system using a LAN according to the prior art. 2, a surveillance system using a LAN includes a camera device b (3) composed of a CCD sensor b (21), an image processor (b) 22, a cordec b (23), and a network transmission circuit (24), and network reception. A storage device b (4) consisting of a circuit (25) and a storage portion (26). In this case, the camera device b (3) may be a mega pixel IP camera device capable of acquiring a clear image with a lot of data.

The optical signal is converted into an electrical signal by the CCD sensor b 21 and transmitted to the image processor b 22. Then, the image processor b 22 converts the electrical signal into digital image data and transmits it to the codec b 23, and the codec b 23 compresses the digital image data and transmits the digital image data to the network transmission circuit 24.

Accordingly, when the network transmission circuit 24 transmits the compressed video data to the network reception circuit 25 via the LAN 4, the network reception circuit 25 sends the compressed video data to the storage unit b26. By storing, video can be recorded.

As described above, the monitoring system having the analog video recording function of FIG. 1 has been changed from the monitoring system of the digital system of FIG.

However, some problems are also pointed out in the surveillance system using the IP camera apparatus and LAN of FIG. That is, since an additional circuit or configuration such as a codec b 23 that compresses the camera device b 3 is required, the cost of the camera device increases and traffic of the data line formed by the LAN 4 increases. There is a possibility that the data loss during transmission to the storage device b (5) may increase, and if necessary by the codec method implemented by the codec b23 of the camera device b (3), the storage device b (5) may When additional circuits such as digital video recorders (DVRs) are needed, additional equipment in the equipment has a problem that the efficiency of the system is reduced.

Accordingly, in order to solve the above-mentioned problems, there is a demand for technology development for implementing a surveillance system by actively utilizing optical communication technology widely used in a network transmission system.

The present invention is to solve the above problems, to provide a structure different from the conventional camera device to provide a monitoring system and monitoring method using a fiber optic cable to directly receive the light signal or optical transmission data in the storage device will be.

In addition, the present invention by changing the configuration for the signal and / or data transmission inside the camera device, to transmit the data generated in the camera sensor unit, such as CCD sensor to the storage device directly through the optical fiber cable without processing It is to provide a monitoring system and a monitoring method using a fiber optic cable to greatly simplify the configuration inside the device.

In addition, the present invention is to monitor by using the optical fiber cable to receive the raw data from the storage device to perform image processing (Image Processing) performed in the conventional camera device to enable efficient and integrated data collection by the storage device To provide a system and monitoring method.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

Surveillance system using an optical fiber cable according to an embodiment of the present invention for achieving the above object, the camera device for transmitting the optical signal generated by recognizing the external object through the optical fiber cable without a separate processing process; And a storage device which receives the optical signal and stores the image signal through an image processing process for converting the optical signal into digital image data and a codec process for compressing the optical signal. It includes. In this way, the line between the camera device and the storage device is constructed through the optical fiber cable, and the price is low, and the provisional area and the constraints on the installation are reduced. In addition, by directly transmitting the optical signal generated by the camera device to the storage device via the optical fiber cable, it is easy to change the design of the number of pixels of the camera device.

The camera apparatus may include a camera sensor unit configured to recognize the external subject and generate the optical signal; And a transceiver for controlling the first optical physical layer processor to transmit the optical signal to the storage device through the optical fiber cable. It is formed to include.

In another embodiment, the camera device, the camera sensor unit for generating an electrical signal by recognizing the external subject to convert the optical signal; A transceiver for converting the electrical signal into a light signal without additional processing; And a first optical physical layer processor for receiving the light signal and transmitting the optical signal to the storage device through the optical fiber cable. Characterized in that it comprises a.

By the structure of the camera device designed as described above, it is not necessary to add additional circuits such as an image processing unit, an ADC, and a network transmission / reception circuit separately to the camera device, and there is no loss of unique image data due to the compression process performed in a conventional camera. To provide the effect.

On the other hand, the storage device, the second optical physical layer processing unit for receiving the optical signal or the light signal from the first optical physical layer processing unit through the optical fiber; An image processing unit configured to receive the light signal from the second optical physical layer processing unit, convert the light signal into a first step, and then perform a double conversion to perform two-step conversion into digital image data; And a codec unit for storing the data in a storage unit by coding the digital image data in a manner of eliminating duplicate data to output the digital image data as a frame unit image signal. Characterized in that it comprises a.

Through such a device configuration, raw data transmission from the camera device to the storage device results in less image data loss due to compression before transmission to the storage device, and provides the effect of transmitting a large amount of data.

The image processing unit, a control unit for controlling the operation of the camera device; Characterized in that it comprises a.

The image processing unit may include: a storage unit which stores a control program for controlling an operation of the camera apparatus by the control unit, and a first storage unit which stores temporary data generated while executing the control program; And a second storage unit storing digital image data compressed by the codec unit. Characterized in that it comprises a.

The image processing unit may have a function of converting an image image photographed by a user selection in black and white, sepia, negative, oil painting, sketch, and inversion when the image mode is used for the camera apparatus.

A first step of the camera apparatus transmitting the optical signal generated by recognizing an external subject to a storage device through an optical fiber cable without undergoing a separate processing process; And a second step of storing, by the storage device, the optical signal through an image processing process for converting the optical signal into digital image data and a codec process for compressing. Characterized in that it comprises a.

The first step may include: generating, by the camera sensor unit of the camera device, an optical object by recognizing the external subject; And a transceiver of the camera device transmits the optical signal to the first optical physical layer processing unit of the camera device, and transmits the optical signal by the first optical physical layer processing unit through the optical fiber cable. A transmission step for transmitting to the optical physical layer processing unit; Characterized in that it comprises a.

On the other hand, the second step, the image processing unit of the storage device, receiving the optical signal is converted into an electrical signal by one step, and performing a two-step conversion to digital image data; And storing the codec unit of the storage unit in a manner of removing duplicate data in order to output the digital image data as a frame unit image signal and storing the coded unit in a storage unit of the storage unit. Characterized in that it comprises a.

In the double conversion step, the image processing unit rotates the image pixels of the digital image data, and enlarges / reduces, moves, and edits (add / remove shapes, patterns) to a size that matches the characteristics and sizes to be output. Performing; And further comprising:

The double conversion step may include converting a video image photographed by a user selection into black and white, sepia, negative, oil painting, sketch, and inversion when the image processing unit is in an image mode with respect to the camera device; And further comprising:

Surveillance system and monitoring method using the optical fiber cable according to an embodiment of the present invention, the pixel structure of the camera sensor of the camera device can be freely changed by the designed structure, the image processing unit, ADC, network transmission / It is not necessary to add an additional circuit such as a receiving circuit, and provides an effect that there is no loss of unique image data due to the compression process performed in a conventional camera.

In addition, the monitoring system and the monitoring method using the optical fiber cable according to another embodiment of the present invention, by establishing a line between the camera device and the storage device through the optical fiber cable, the price is low, the construction area and constraints on installation Provide effect.

In addition, the monitoring system and the monitoring method using the optical fiber cable according to another embodiment of the present invention, due to the raw data transmission without processing from the camera device to the storage device, image data loss due to the compression before transmission to the storage device is less In addition, it provides the effect that can transfer a large amount of data.

1 is a view showing a monitoring system using a coaxial cable according to the prior art.
2 is a view showing a monitoring system using a LAN according to the prior art.
3 is a view showing a monitoring system using an optical fiber cable according to an embodiment of the present invention.
4 is a flowchart illustrating a monitoring method using an optical fiber cable according to an embodiment of the present invention.
5 is a flowchart illustrating a monitoring method using an optical fiber cable according to another embodiment of the present invention.

Hereinafter, a detailed description of a preferred embodiment of the present invention will be described with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In the present specification, when one component 'transmits' data or a signal to another component, the component may directly transmit the data or signal to another component, and through at least one other component. It means that the data or signal can be transmitted to other components, and the optical call and the light signal are the signals having the same physical characteristics, and each of them describes the processing at the camera device 30 and the fiber optic cable 40 separately. To be defined.

3 is a view showing a monitoring system using an optical fiber cable according to an embodiment of the present invention. Referring to FIG. 3, a surveillance system using an optical fiber cable includes a camera device 30, an optical fiber cable 40, and a storage device 50.

The camera device 30 includes a camera sensor unit 31, a transceiver 32, and a first optical physical layer processing unit 33 (Optic PHY-1). Each component of the device is shown separately in the drawings to indicate that it may be functionally and logically separated, and does not necessarily mean that it is physically a separate component or implemented as a separate code.

The camera sensor unit 31 may transmit the optical signal formed by recognizing the external subject to the transceiver 32 or converted into an electrical signal and transmitted. In this case, the camera sensor 31 may be formed as a charge coupled device (CCD) sensor or a complementary metal oxide semiconductor field effect transistor (CMOS) sensor.

The transceiver (Giga Transceiver) 32 transmits the optical signal received from the camera sensor unit 31 to the first optical physical layer processing unit (Optic PHY-1: 33) as it is.

Alternatively, when the electrical signal is received from the camera sensor unit 31, the transceiver 32 converts the electrical signal into a light signal and transmits the electrical signal to the first optical physical layer processor 33. On the other hand, the transceiver 32 can convert the light signal input from the first optical physical layer processing unit 33 into an electrical signal.

The transceiver 32 is a configuration unit that converts an electrical signal photographed by the camera sensor unit 31 of the camera device 30 into a light signal and transmits raw data without any other processing. The transceiver 32 may be formed as a giga transceiver. .

The first optical physical layer processor 33 (optical PHY-1) receives an optical signal or a light signal from the transceiver 32 and transmits the optical signal to the second optical physical layer processor 51 through the optical fiber cable 40.

That is, by transmitting the optical signal generated by the camera sensor unit 31 to the storage device 30 directly or without any processing through the transceiver 32 and the first optical physical layer processing unit 33, the camera device without restriction An effect that can freely change the pixel of the camera sensor unit 31 of 30 is provided.

An optical fiber cable 40 is formed between the first optical physical layer processor 33 and the second optical physical layer processor 51 to transmit and receive an optical signal or a light signal. The optical fiber cable 40 constitutes an optical path as a means for transmitting image surveillance information photographed by the camera device 30.

The storage device 50 includes a second optical physical layer processing unit 51 (optical PHY-2), an image processing unit 52, a codec unit 53, and a storage unit 54. Although the camera device 30 is illustrated as one for convenience of description in FIG. 3, a plurality of camera devices may be connected to one storage device 50 so that data can be transmitted and received.

The second optical physical layer processor (Optic PHY-2) 52 receives an optical signal or a light signal from the first optical physical layer processor 33 through the optical fiber cable 40 and transmits the optical signal to the image processor 52. .

The image processing unit 52 receives an optical signal or a light signal from the second optical physical layer processing unit 51, converts the optical signal into an electrical signal, and digitizes the digital signal for image processing. Thereafter, the image processing unit 52 transmits the digital image data to the codec unit 53.

In addition, the image processing unit 52 rotates the image pixels of the digital image data, enlarges and reduces the size according to the characteristics and sizes to be output, moves, rotates, edits (adds / deletes such as shapes and patterns). And so on.

In addition, the image processing unit 52 includes a module for implementing an image effect function of a still image when the camera apparatus 30 is set to a moving image mode. When the camera device 30 is in the image mode, the image processing unit 52 converts the image image photographed by the user's selection of black and white, sepia, negative, oil painting, sketch, inversion, etc., by the image effect function, The digital image data may be transmitted to the codec unit 53.

The image processing unit 52 includes a controller 52a for controlling the overall operation of the camera device 30. The control unit 52a controls the camera device 30 using a control program for controlling the operation of the camera device 30 from the first storage unit 54a, and reconstructs temporary data generated while executing the control program. The data is stored in the first storage unit 54a.

The codec unit 53 outputs the digital image data received from the image processing unit 52 as a frame unit image signal, codes it in a set manner, and transmits the digital image data to the storage unit 54. In addition, the codec unit 53 generates and reproduces a video signal according to a setting mode of the camera apparatus 20, and a moving picture expert group (MPEG) compression codec may be used.

The storage unit 54 includes a first storage unit 54a and a second storage unit 54b. The storage unit 54 maintains and retains stored data even when power is not supplied as a non-volatile memory (NVM). The flash memory may include a flash memory, a magnetic random access memory (MRAM), a phase-change random access memory (PRAM), a ferroelectric RAM (FRAM), and the like.

The first storage unit 54a stores a control program for controlling the general operation of the camera device 30 performed by the controller 52a. In addition, the first storage unit 54a performs a function of temporarily storing data generated while executing the control program.

The second storage unit 54b stores digital image data generated according to an embodiment of the present invention under the control of the controller 52a. The second storage unit 54b may further include an expansion memory that is externally connected through an expansion pack. The expansion memory is a memory capable of storing image data.

Although not shown, a screen display unit (not shown) may be further included, and the screen display unit is connected to the image processing unit 52 and performs a function of displaying image data output from the image processing unit 52. That is, the screen display unit displays an image signal or a video signal according to the control signal of the image processing unit 52. Here, the display unit may use an LCD and may be implemented by a touch screen method.

4 is a flowchart illustrating a monitoring method using an optical fiber cable according to an embodiment of the present invention. 3 and 4, the camera sensor unit 31 of the camera device 30 generates an optical signal by recognizing an external subject (S1).

As the transceiver 32 transmits the optical signal received from the camera sensor unit 31 to the first optical physical layer processing unit 33, the first optical physical layer processing unit 33 transmits the light signal through the optical fiber cable 40. The second optical physical layer processor 51 of the storage device 50 is transferred to the storage device 50 (S2).

When the second optical physical layer processing unit 51 receives the optical signal from the first optical physical layer processing unit 33 through the optical fiber cable 40 and transmits the optical signal to the image processing unit 52, the image processing unit 52 transmits the light beam. After receiving a signal and converting it into an electrical signal in one step, it is digitized for image processing to perform a two-step conversion into digital image data (S3).

After the step S3, when the image processing unit 52 transmits the digital image data to the codec unit 53 to compress the digital image data, the codec unit 53 receives the digital image received from the image processing unit 52. The data is output as a frame unit video signal and coded in such a manner as to remove duplicate data in a set manner (S5).

On the other hand, the image processing unit 52 rotates the image pixels of the digital image data, enlarge and reduce the size to fit the characteristics and size to be output, move, rotate, edit (adding / deleting shapes, patterns, etc.) Etc. can be performed.

In addition, the image processing unit 52 may implement an image effect function of a still image when the camera apparatus 30 is set to a video mode, and when the camera apparatus 30 is an image mode, the image processing function may include a black and white, Sepia, negative, oil painting, sketching, and inversion can be implemented to convert the image taken by the user.

Upon completion of step S4, the codec unit 53 stores the digital image data compressed by the storage unit 54 (S5).

5 is a flowchart illustrating a monitoring method using an optical fiber cable according to another embodiment of the present invention. 3 to 5, the camera sensor unit 31 of the camera device 30 recognizes an external subject and converts an optical signal to generate an electrical signal (S11).

The transceiver 32 converts the electrical signal received from the camera sensor unit 31 into a light signal without additional processing (S12).

After the step S12, the transceiver 32 transmits the light signal converted in the step S12 to the first optical physical layer processing unit 33, whereby the first optical physical layer processing unit 33 (Optical PHY-1) receives the light beam. The signal is transmitted to the second optical physical layer processor 51 of the storage device 50 through the optical fiber cable 40 (S13).

When the second optical physical layer processor 51 receives a light signal from the first optical physical layer processor 33 through the optical fiber cable 40 and transmits the light signal to the image processor 52, the image processor 52 After receiving the light signal and converting it into an electrical signal in one step, it is digitized for image processing to perform two-step conversion into digital image data (S14).

Since the process after step S14 corresponds to steps S14 to S5 in FIG. 3, description thereof will be omitted.

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored.

Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device and the like, and also implemented in the form of a carrier wave (for example, transmission over the Internet) .

The computer readable recording medium may also be distributed over a networked computer system so that computer readable code can be stored and executed in a distributed manner. And functional programs, codes, and code segments for implementing the present invention can be easily inferred by programmers skilled in the art to which the present invention pertains.

As described above, preferred embodiments of the present invention have been disclosed in the present specification and drawings, and although specific terms have been used, they have been used only in a general sense to easily describe the technical contents of the present invention and to facilitate understanding of the invention , And are not intended to limit the scope of the present invention. It is to be understood by those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

1: Camera Device a 3: Storage Device
11: CCD sensora 12: image processor a
13: DAC 15: ADC
16: Codec a 17: Storage unit a
3: camera unit b 21: CCD sensor b
22: Image processor b 23: Cortec b
24: network transmission circuit 25: network reception circuit
26: storage unit b 30: camera device
31: camera sensor 32: transceiver
33: first optical physical layer processing unit 40: optical fiber cable
50: storage device 51: second mineral physical layer processing unit
52: image processing section 53: codec section
54: storage unit 54a: first storage unit
54b: second storage

Claims (13)

delete delete A camera device for transmitting an optical signal generated by recognizing an external subject through an optical fiber cable without undergoing a separate processing process; And
A storage device which receives the optical signal and stores it through an image processing process for converting the optical signal into digital image data and a codec process for compressing the optical signal; Including but not limited to:
The camera device,
A camera sensor unit recognizing the external subject and converting the optical signal to generate an electrical signal;
A transceiver for converting the electrical signal into a light signal and transmitting the light signal; And
A first optical physical layer processor for receiving the light signal and transmitting the optical signal to the storage device through the optical fiber cable; Surveillance system using a fiber optic cable, comprising a.
delete The method of claim 3, wherein the storage device,
A second optical physical layer processor which receives the light signal from the first optical physical layer processor through the optical fiber cable;
An image processing unit configured to receive the light signal from the second optical physical layer processing unit, convert the light signal into a first step, and then perform a double conversion to perform two-step conversion into digital image data; And
A codec unit which codes and stores the digital image data in a storage unit in a manner of eliminating duplicate data to output the digital image data as a frame unit image signal; Surveillance system using a fiber optic cable, comprising a.
The method according to claim 5, The image processing unit,
A control unit controlling an operation of the camera device; Surveillance system using a fiber optic cable, comprising a.
The method of claim 6, wherein the storage device,
A first storage unit storing a control program for controlling an operation of the camera apparatus by the controller, and storing temporary data generated while executing the control program; And
A second storage unit storing digital image data compressed by the codec unit; Surveillance system using a fiber optic cable, comprising a.
The method according to claim 5, The image processing unit,
In the image mode for the camera device, the monitoring system using a fiber optic cable, characterized in that it has a function of converting the video image taken by the user selection in black and white, sepia, negative, oil painting, sketch, inversion.
delete A first step of the camera apparatus transmitting the optical signal generated by recognizing an external subject to a storage device through an optical fiber cable without undergoing a separate processing process; And
A second step of the storage device receiving and storing the optical signal through an image processing process of converting the optical signal into digital image data and a codec process of compressing the optical signal; Including but not limited to:
The first step is,
A generating step of generating, by the camera sensor unit of the camera device, an optical signal by recognizing the external subject; And
The transceiver of the camera device transmits the optical signal to the first optical physical layer processor of the camera device, and transmits the optical signal by the first optical physical layer processor to the second optical signal of the storage device through the optical fiber cable. A transmission step of transmitting to the physical layer processing unit; Monitoring method using a fiber optic cable, comprising a.
The method of claim 10, wherein the second step,
A double conversion step of the image processing unit of the storage device receiving the optical signal and converting the optical signal into an electrical signal in one step and then performing a two step conversion into digital image data; And
A storage step of storing, by a codec unit of the storage unit, a code in a manner of eliminating duplicate data in order to output the digital image data as a frame unit image signal and storing it in the storage unit of the storage device; Monitoring method using a fiber optic cable, comprising a.
The method of claim 11, wherein the double conversion step,
Performing, by the image processing unit, an enlargement / reduction, movement, and editing (addition / deletion of shapes, patterns, etc.) to a size suitable for rotation, image characteristics, and size of the image pixel of the digital image data; Monitoring method using an optical fiber cable, characterized in that it further comprises.
The method of claim 11, wherein the double conversion step,
Converting, by the image processing unit, the image image photographed by the user's selection of black and white, sepia, negative, oil painting, sketching, and inversion when the image mode is used for the camera apparatus; Monitoring method using an optical fiber cable, characterized in that it further comprises.

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