KR20000017113U - Rf cctv system using a flashlight - Google Patents

Abstract

The present invention is designed to maximize security and patrol efficiency by installing cameras and RF transmitters in flashlights so that cameras can capture abnormal situations that may occur during patrols and transmit these images in real time to the central control room. A wireless closed circuit television system using a flashlight.

In the system of the present invention, a lens for capturing an optical image and an antenna for radiating a video signal into the air are installed in an appropriate place of the main body, and a camera portion and the camera portion for converting an optical image captured from the lens into an electrical signal therein. A plurality of fixed camera units fixed and installed in place in the flashlight camera main body and the surveillance area for converting the video signal converted by the RF video signal to the antenna unit; An RF receiver configured to receive an RF video signal radiated from the antenna, and in the 'normal mode', sequentially multiplex the video signal input from the fixed camera unit, and in the 'RF reception mode', the RF receiver and the fixed video A multiplexer for multiplexing the video signals input from the camera together; And a central control room consisting of a monitor for displaying the multiplexed video signal in the multiplexer and a time-lapse VCR for recording the multiplexed video signal at predetermined time intervals.

Description

Wireless Closed Circuit Television System Using Flashlight {RF CCTV SYSTEM USING A FLASHLIGHT}

The present invention relates to a wireless closed-circuit television system using a flashlight. In particular, a flashlight camera is used to capture an abnormal situation that may occur during patrol by adding a camera and an RF transmission function to the flashlight, and the captured image is recorded in a central control room in real time. A wireless closed circuit television system using a flashlight for RF transmission.

As is well known, Closed Circuit Tele-Vision (hereinafter referred to as CCTV) systems include one or more video cameras that capture surveillance objects, monitors that output video from video cameras, and video cameras. It is composed of a VCR (Video Cartridge Recorder) for recording the recorded video to be played back later. These CCTV systems are currently used for surveillance in banks and factories, etc., and are also used to identify traffic conditions at major intersections.

However, in the conventional CCTV system, the central control room in which the monitor or the VCR is installed has no choice but to monitor only the place where the surveillance camera is fixed and installed and record only the video signal input from the surveillance camera. As a result, in areas where it was difficult to install surveillance cameras, the patrolman had no choice but to visually monitor the surveillance area with a flashlight. Even if the patrol detects abnormal signs during the patrol, the camera functions and radio frequency (RF) Flashlights without built-in transmitters could not input and transmit video signals. As a result, the central control room cannot monitor the current situation in real time or regenerate and monitor the current situation, thereby degrading security and patrol efficiency.

The present invention has been devised to solve the above-mentioned problems, by installing a camera and an RF transmitter in a flashlight to photograph an abnormal situation that may occur during patrol with the camera and to transmit the captured image to the central control room in real time. The purpose of the present invention is to provide a wireless closed circuit television system using a flashlight to maximize security and patrol efficiency.

Wireless closed circuit television system using a flashlight of the present invention for achieving the above object is provided with a lens for capturing an optical image and an antenna for radiating a video signal into the air in place of the main body, and the optical captured from the lens A camera unit for converting an image into an electrical signal and a flashlight camera body for converting the video signal converted by the camera unit into an RF video signal and transmitting the RF signal to the antenna unit, and a plurality of fixed camera units fixed and installed in place in a surveillance area; An RF receiver configured to receive an RF video signal radiated from the antenna, and in the 'normal mode', sequentially multiplex the video signal input from the fixed camera unit, and in the 'RF reception mode', the RF receiver and the fixed video A multiplexer for multiplexing the video signals input from the camera together; And a central control room consisting of a monitor for displaying the multiplexed video signal in the multiplexer and a time-lapse VCR for recording the multiplexed video signal at predetermined time intervals.

1 is a block diagram of a wireless closed circuit television system using a flashlight according to a preferred embodiment of the present invention.

*** Explanation of symbols for the main parts of the drawing ***

1: light bulb, 2: lens,

3: flashlight camera unit, 4: power,

5: RF transmitter, 6: antenna,

10: flashlight camera body, 20: central control room,

22: multiplexer, 22a: RF receiver,

24,24-1, ..., 24-n: fixed camera unit, 26: TypeLabs VCR,

28: monitor

Hereinafter, a wireless closed circuit television system using a flashlight according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a wireless closed circuit television system using a flashlight according to a preferred embodiment of the present invention. As shown in FIG. 1, the wireless closed circuit television system using the flashlight of the present invention is largely a flashlight camera main body 10 having a camera and an RF transmission function and cameras fixed and installed in place in a surveillance area (hereinafter, a fixed camera). And a central control room 20 that receives the video signal transmitted from the flashlight camera body 10 and records and reproduces it.

In the above-described configuration, the camera lens 2 is mounted to the front of the flashlight camera main body 10 carried by the patrol, for example, above the light bulb 1, and the rear side of the flashlight camera body 10 is mounted in real time. An antenna 6 capable of wireless transmission is mounted. The flashlight camera body 10 is equipped with a flashlight camera unit 3 for converting the optical image captured by the camera lens 2 into an electrical signal, and converted into an electrical signal by the flashlight camera unit 3. After the converted video signal is converted into an RF signal, an RF transmitter 5 for transmitting to the air through the antenna 6 is mounted. Reference numeral 4 denotes a DC power supply for supplying electric power to the light bulb 1, the flashlight camera unit 3, and the RF transmitter 5.

On the other hand, the central control room 20 has a plurality of fixed camera units (24: 24-1, ..., 24-n) fixed in place in the surveillance area, two of the 'normal mode' and 'RF reception mode' In case of the 'normal mode', the video signals input from each of the fixed camera units 24 to 24-1,..., 24--n are sequentially multiplexed. A multiplexer 22, which multiplexes the video signal input from each of the fixed camera units 24: 24-1, ..., 24-n together with the video signal received by the RF receiver 22a installed therein, respectively. A monitor 28 for displaying the video signal input from the fixed camera section 24: 24-1, ..., 24-n of the RF video signal received from the flashlight camera section 3 as selected by the user, and respectively. The video signal input from the fixed camera section 24: 24-1, ..., 24-n and the video scene received from the flashlight camera section 3 of the It made to the Time-Lapse VCR (Time Lapse VCR) (26) to be recorded at a predetermined time interval. In the following, the multiplexer 22 is operable with eight channels (including nine channels including the RF reception channel), and the 'fixed camera selection buttons' (eight) and 'RF' are provided on the front operation panel (not shown). Selection button '(not shown), and the time-lapse VCR 26 is provided from each of the fixed camera units 24: 24-1, ..., 24-n input via the multiplexer 22. The explanation will be given by recording the input signal and the input signal from the flashlight camera unit 3 at 1/30 second intervals, for example.

Hereinafter, the operation of the closed circuit television system using the flashlight camera of the present invention having the above-described configuration will be described.

First, when the multiplexer 22 operates in the 'normal mode', time-lapse VCRs are sequentially multiplexed with video signals input through the respective fixed camera units 24 to 24-1 to 24 to n. And the monitor 28, the time-lapse VCR 26 records the input signal every 1/30 second interval, and the monitor 28 divides the input signal into eight screens. Each display or only one selected channel is extracted and displayed.

In this state of operation, when the patrolman is photographed in the light of the place where the abnormal signs occurred while the 'RF operation switch' (not shown) installed in the flashlight camera body 10, the input through the camera lens (2) After the optical image is converted into an electric signal in the flashlight camera unit 3, it is emitted by air through the RF transmitter 5. At the same time, the RF receiver 22a embedded in the multiplexer 22 of the central control room 20 detects that the RF video signal emitted from the antenna 6 of the flashlight camera body 10 is input and immediately multiplexes 22. Converts the operation mode to 'RF reception mode'.

When the multiplexer 22 is operated in the 'RF reception mode', the multiplexer 22 is later added to the flashlight camera unit in addition to the video signal input from the fixed camera unit 24: 24-1, ..., 24-n. The video signal input from (3) is also multiplexed together and transmitted to the time-lapse VCR 26. Next, the time-lapse VCR 26 performs a 1/30 second video signal from the fixed camera units 24: 24-1, ..., 24--n and the video signal from the flashlight camera unit 3 thus transmitted. Recording will occur at intervals.

On the other hand, during playback, when the user presses the 'RF selection button' on the operation panel provided on the front of the multiplexer 22, the time-lapse VCR 26 extracts only the video signal from the flashlight camera unit 3 and monitors ( 28) to play back.

The flashlight camera device for monitoring of the present invention is not limited to the above-described embodiment and can be modified in various ways within the range allowed by the technical idea of the present invention.

According to the wireless closed-circuit television system using the flashlight camera of the present invention as described above, the flashlight is equipped with a camera and an RF transmission function, and the flashlight camera is used to provide the central control room with real-time signs of abnormalities. RF transmission is effective in maximizing security and surveillance efficiency.

Claims (1)

A lens for capturing an optical image and an antenna for radiating a video signal into the air are installed in place of the main body, and a camera portion for converting an optical image captured from the lens into an electrical signal and a video converted by the camera portion are located therein. A flashlight camera body for converting a signal into an RF video signal and transmitting the same to the antenna unit; A plurality of fixed camera units fixed and installed in place in the surveillance area; An RF receiver configured to receive an RF video signal radiated from the antenna, and in the 'normal mode', sequentially multiplex the video signal input from the fixed camera unit, and in the 'RF reception mode', the RF receiver and the fixed video A multiplexer for multiplexing the video signals input from the camera together; And a central control room comprising a monitor for displaying the multiplexed video signal in the multiplexer and a time-lapse VCR for recording the multiplexed video signal at predetermined time intervals.