KR101172072B1 - Method and apparatus for monitoring of using the camera module - Google Patents

Abstract

The present invention relates to a camera module, and more particularly, to a monitoring device using a camera module. As described above, the monitoring apparatus using the camera module includes a camera module, digital format conversion means for converting an image signal output from the camera module into a digital format, a memory for storing the signal converted into the digital format, It is configured to include an output medium for outputting the stored signal, there is an effect of monitoring the front / rear of the vehicle by simply capturing, compressing, storing and reproducing the video signal from the camera module to the external image display medium.

Camera module, encoder, decoder, DSP

Description

Monitoring apparatus and method using a camera module {Method and apparatus for monitoring of using the camera module}

1 is a block diagram showing a monitoring apparatus using a conventional camera module

2 is a block diagram showing a monitoring device using a camera module according to the present invention

3 is a flowchart illustrating a monitoring method using a camera module according to the present invention.

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

100: camera module 200: digital format conversion means

210: decoder 220: digital signal processing unit

230: encoder 300: encoder

400: video switch 500: memory

600: I / O 700: output medium

The present invention relates to a camera module, and more particularly, to a monitoring apparatus and method using a camera module for monitoring the front and rear of a vehicle by simply capturing, compressing, storing, and reproducing an image signal from the camera module to an external image display medium. .

This is a vehicle surveillance camera system that will be developed to focus on the digitization of an analog system that is rapidly developing in recent years, and can be used as an analysis data for situation analysis through stored images of front and rear monitoring while driving and in case of emergency. The focus is on.

In general, the rear surveillance camera is a surveillance feature for collision contact accidents of various objects that may occur when the vehicle is driven backwards and while driving, and it is simple to display an analog signal (composite video signal) using a small CCTV camera through a simple output medium. It consists of a system of enemy nature.

Here, the rear surveillance camera can be largely divided into a camera, a monitor, and a control unit, and the camera is configured to photograph a rear view of the vehicle, and is provided to an option of a current luxury vehicle for simple display from an analog system. It is becoming.

In addition, the monitor, which is a display means, is a device capable of displaying a composite video signal transmitted through a camera. The monitor is provided with an LCD monitor inside the vehicle, and can be used as a television monitor during normal driving. It includes a function to detect the vehicle speed sensor, or when the reverse and forcibly output the rear information through the monitor.

In addition, the control unit forcibly stops watching TV when the image is input by the vehicle using a sensor or the like and the image is displayed on the camera and when the television is viewed by the monitor.

Hereinafter, a monitoring apparatus using a camera module according to the prior art will be described with reference to the accompanying drawings.

1 is a block diagram showing a monitoring apparatus using a conventional camera module.

As shown in FIG. 1, a monitoring apparatus using a conventional camera module includes a zoom lens, a focus lens, and the like, and collects light and converts the collected light into an electrical signal, and the CCD sensor. A CDS 20 for removing noise components of the electrical signal output from the (10), a digital signal processor 30 for processing the signal output from the CDS 20 into a signal suitable for the output medium 50, The V-driver 40 is configured to control the CCD sensor 10 in cooperation with the digital signal processor 30.

The monitoring device using the conventional camera module configured as described above has a disadvantage that only a large volume element of the camera portion and a passive role of a simple display are performed at the level of displaying using an analog signal of a simple CCD camera.

In addition, in the aspect of the unit cost of the product using a single product is applied to the system has a number of constraints are strong.

Therefore, the present invention has been made to solve this problem, the present invention provides a monitoring device using a camera module that converts the image signal input from the camera module to a digital format and stores it, and easily restores the stored image. There is a purpose.

Surveillance apparatus using a camera module according to the present invention for achieving the above object includes a camera module, digital format conversion means for converting the image signal output from the camera module to a digital format, and the signal converted into the digital format And a memory for storing and an output medium for outputting the stored signal.

Preferably, the digital format converting means comprises: a decoder for converting the YUV signal output from the camera module into a digital RGB signal, a digital image processing unit for compressing the digital signal output from the decoder, and reconstructing the compressed signal It consists of an encoder that converts to a composite signal.

The composite signal is a TV video format signal used in a vehicle.

In addition, the vehicle TV image format signal is transmitted to the input terminal of the decoder and the encoder and converted into a VGA monitor signal for output on the monitor screen.

The compression is in the Joint Photographic Experts Group (JPEG) format.

Monitoring method using a camera module of the present invention for achieving the above object, the step of receiving a YUV signal through the camera module, converting the received YUV signal into a digital RGB signal, the converted digital Compressing and storing the signal, and converting and storing the stored signal into a signal corresponding to an output medium.

Hereinafter, a monitoring apparatus using a camera module according to the present invention will be described with reference to the accompanying drawings.

2 is a view showing a monitoring device using a camera module according to the present invention.

As shown in FIG. 2, the monitoring apparatus using the camera module according to the present invention includes a camera module 100 including a lens, a light conversion element, and a CDS / AGC, and a signal output from the camera module 100. An encoder 300 for converting the signal into a signal according to the method 700, a digital format converting means 200 for converting a signal output from the camera module 100 into a digital signal format, and the digital format converting means 200. A storage unit 500 for storing the converted data, an I / O 600 for managing data input / output, a signal output through the encoder 300 and an output through the digital format conversion means 200. The video switch 400 for switching the signal, and the output medium 700.

The digital format converting means may include a decoder 210 for decoding an image signal received through a camera module, and a digital image processor (DSP) for controlling and compressing a digital image signal output from the decoder 210. 220 and an encoder 230 for restoring a video signal compressed by the digital image processor 220 to a signal different from that of the medium 700 for output.

The camera module 100 includes a lens, a light conversion element, a CDS / AGC, and the like, and the lens is composed of a zoom lens and a focus lens to collect light.

In addition, a light coupled device converts the light collected from the lens into an electrical signal, and the CDS / AGC removes a noise component of the electrical signal output from the light conversion device and compensates and outputs the gain.

The decoder 210 of the digital format converting means 200 has a built-in analog digital converter and decoding-operation to convert an analog signal output from the camera module 100 into a digital signal by the analog-digital converter. This converts the YUV 422 signal into a total of 24 bits of digital RGB signals, each 8 bits for RGB.

The digital image processor 220 compresses the digital image signal received from the decoder 210 in a Joint Photographic Experts Group (JPEG) format to compress the digital image signal to a small size and stores the digital image signal in the memory 500.

The encoder 230 restores the video image information that has been compressed and stored from the digital image processing unit 220 when the user wants to restore the image stored in the memory 500. Is converted to the output medium 700 and output to the output medium 700.

Here, the decoder 210, the digital image processor 220, and the encoder 230 are referred to as digital format converting means 200, and the decoder 210 and the encoder 230 are connected to the digital image processor 220. It may be integrated together to serve as a single chip.

Referring to the operation of the monitoring device using the camera module configured as described above are as follows.

First, when an image is received through the camera module 100, the decoder 210 of the digital format converting means 200 converts the YUV 422 analog signal of the received image signal into an RGB digital signal.

Here, the decoding is converted into a total of 24 bit digital RGB signals of 8 bits for RGB by an analog digital converter (ADC) and an image decoding-operation stored in an image decoder IC chip.

In addition, the digital image processor 220 compresses the converted 24-bit digital RGB signal in a small size in a Joint Photographic Experts Group (JPEG) format and stores it in the memory 500.

Then, when the image stored in the memory 500 is to be restored and confirmed, the compressed video image signal is encoded into a composite signal by an internal operation.

Here, the composite signal is a TV video format used in a vehicle, and the converted signal may be converted into an analog RGB signal format for a VGA monitor so that the signal can be recognized by a VGA monitor of a PC and output the stored information on a monitor screen.

3 is a flowchart illustrating a monitoring method using a camera module according to the present invention.

Referring to FIG. 3, first, an image is received from a camera module (S100).

The YUV 422 analog signal of the received video signal is converted into an RGB digital signal (S200).

Here, the conversion is converted into a total of 24 bit digital RGB signals of 8 bits for RGB by an analog digital converter (ADC) and an image decoding-operation stored in an image decoder IC chip.

Then, the digital signal converted into a 24-bit digital RGB signal as described above is compressed (S300).

The compression compresses the digital RGB signal to a smaller size in a Joint Photographic Experts Group (JPEG) format.

Then, when the user stores the compressed digital video signal in a memory (S400), and then the user wants to restore the image stored in the memory, the compressed video video signal is converted into a composite signal by an internal operation. The output is converted (S500).

Here, the output signal is a TV video format used in a vehicle and converts this signal into an analog RGB signal format for VGA monitor so that it can be recognized by a VGA monitor of a PC and outputs the stored information on a monitor screen.

As described above, most of the camera module using a chip on board (COB) packaging method using a conventional CMOS sensor is used as a simple component of a video image storage device of a mobile phone. Individual ICs such as encoders, decoders, DSPs, memories, etc. are used to construct multi-functional integrated parts with a built-in RTOS (Real-Time Operating System) to utilize a single unique function using COB and stacking methods. We can build a system internalizing a function).

In addition, through the interlocking of the vehicle camera sensor, through the image output and the storage of the image, it is effective to build an effective system for coping with and analyzing the risk situation.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the examples, but should be defined by the claims.

Claims (6)

A camera module;  Digital format conversion means for converting an image signal output from the camera module into a digital format; A memory for storing the signal converted into the digital format; And an output medium for outputting the stored signal, The digital format conversion means, A decoder for converting the YUV signal output from the camera module into a digital RGB signal; A digital image processor which compresses the digital signal output from the decoder; And an encoder for restoring the compressed signal and converting the compressed signal into a composite signal. delete The method of claim 1, And the composite signal is a TV video format signal for use in a vehicle. The method of claim 3, wherein And transmitting the vehicle TV image format signal to an input terminal of the decoder and an encoder, converting the vehicle TV image format signal into a VGA monitor signal, and outputting the signal to a monitor screen. The method of claim 1, The compression apparatus is a surveillance apparatus using a camera module, characterized in that the JPEG (Joint Photographic Experts Group) format delete

Images