KR930009427A

KR930009427A - Image transmission CCTV system using public line

Info

Publication number: KR930009427A
Application number: KR1019910018101A
Authority: KR
Inventors: 이기석
Original assignee: 강진구; 삼성전자 주식회사
Priority date: 1991-10-15
Filing date: 1991-10-15
Publication date: 1993-05-22
Also published as: KR950000833B1

Abstract

이 발명은 CCTV(Closed Circuit TV)에 관한 것으로, 유저가 카메라(CA1)∼(CA4)를 선택하면 마이크로프로세서(MP)가 이에 따른 콘트롤 데이터를 발생하여, 제1송수신부(110)를 통하여, 제2송수신부(210)로 전송하며, 이 콘트롤 데이터에 따라 제어부(220)에서 선택된 카메라의 외부동기를 잡아주며, 이에 따라 각 선택된 카메라로 부터의 화상 데이터가 아날로그 디지털 변환기(ACD1)에서 디지털 화상 데이터로 변환되어 화상 메모리부(230)에 입력된다.The present invention relates to a closed circuit TV (CCTV), and when the user selects the cameras CA1 to CA4, the microprocessor MP generates control data according to the first transmission and reception unit 110. It transmits to the second transmitter / receiver 210, and the controller 220 catches the external synchronization of the selected camera according to the control data, so that the image data from each selected camera is converted into a digital image by the analog-to-digital converter ACD1. The data is converted into data and input to the image memory unit 230.

이때 화상 메모리부(230)에서는 제어부(220)의 콘트롤 데이터에 따라 1프레임 단위로 화상 데이터를 제2송수신부(210)를 통하여 제1송수신부(110)에 전송한다. 그러면 제1송수신부(110)에서는 이 화상데이타를 디지털 아날로그 변환기(CAC1)로 전송하며, 이 디지털 아날로그 변환기(DAC1)는 마이크로프로세서(MP)의 콘트롤 클럭에 따라 아날로그 화상 데이터로 변환하여 디스플레이부(120)로 이 아날로그 화상 데이터가 출력되어 정지화면으로 1화면 또는 4화면이 연속적으로 디스플레이 되게 함으로써 변복조장치인 모뎀을 이용하여 마이크로프로세서 제어에 따라 원격으로 제어하여 화상 데이터를 전송할 수 있게 되어 산업용 또는 가정용으로써 원거리에서 현장을 감시할 수 있게하며, 모뎀을 이용하므로 그 시공이 간편하고 설치비용이 절감되게 한 것이다.In this case, the image memory 230 transmits the image data to the first transmitter / receiver 110 through the second transmitter / receiver 210 in units of one frame according to the control data of the controller 220. Then, the first transmitter / receiver 110 transmits the image data to the digital-to-analog converter CAC1. The digital-to-analog converter DAC1 converts the image data into analog image data according to the control clock of the microprocessor MP. 120) This analog image data is output so that one or four screens can be displayed continuously as a still image, so that image data can be remotely controlled by microprocessor control using a modem, which is a demodulation and demodulation device. This makes it possible to monitor the site remotely, and because the modem is used, the construction is simple and the installation cost is reduced.

Description

Image transmission CCTV system using public line

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도 a, b는 이 발명에 따른 공중회선을 이용한 화상전송 CCTV 시스템의 블럭도.1 is a block diagram of an image transmission CCTV system using a public line according to the present invention.

제2도 a, b는 제1도에 따른 데이터 전송 흐름도이다.2, a and b are flowcharts of data transmission according to FIG.

Claims

Control data transmission means 100 for transmitting the control data for controlling the selective camera according to the user's camera selection, receiving and displaying image data transmitted from the camera according to the transmitted control data, and the control data transmission. And an image data transmission means (200) for transmitting image data from the camera to the control data transmission means (100) in units of frames according to the control data from the means (100).

The microprocessor (MP) of claim 1, wherein the control data transmitting means (100) generates various control data and a control clock for controlling a selected camera according to a user's camera selection, and the microprocessor (MP). A first transmitter / receiver 110 for transmitting control data from the microprocessor MP to a camera axis and receiving image data from the camera axis, and the microprocessor MP and the first transmitter / receiver ( A digital-to-analog converter (DAC1) and an analog-to-digital converter (DAC1) for converting an image signal from the first transmitter / receiver 110 according to a control clock from the microprocessor (MP) and the digital-to-analog converter (DAC1). A display unit 120 connected to the display unit 120 for displaying image data from the digital-to-analog converter DAC1. CCTV image transmission system using a line.

The apparatus of claim 1, wherein the image data transmitting means 200 receives the control data from the first transmitting and receiving unit 110 and transmits the image data from the camera side to the first transmitting and receiving unit 110. A controller 220 connected to the second transmitter / receiver 210 and the second transmitter / receiver 210 to adjust the external synchronization of the cameras CA1 to CA4 according to control data from the second transmitter / receiver 210. ) And to analog-to-digital converter ADC1 from cameras CA1 to CA4 and connected to cameras CA1 to CA4 to display image data in units of one frame according to the control data of the controller 220. Image transmission CCTV system using a public line consisting of an image memory unit 230 for transmitting to the second transmission and reception unit 210.

The image transmission CCTV system according to claim 2 or 3, wherein the first and second transmission / reception units (110) and (220) comprise a modem which is a modulation / demodulation device.

※ Note: The disclosure is based on the initial application.