JPS6046672A - Video camera system for monitoring - Google Patents

Abstract

PURPOSE:To detect the positional azimuth of a camera instantaneously by detecting the horizontal and vertical directions of a rotary board mounting the camera and displaying the rotation position of the rotary board in accordance with a detected output signal. CONSTITUTION:The rotary board 23 is controlled by a control signal from a remote control part 24 through a cable 32 and an object in the azimuth is photographed by the camera 21 and the picture of the object can be observed by a monitor receiver 22. An electric signal corresponding to the rotation of the rotary board 23 can be detected by detecting elements 41, 43. Discrimination parts 49, 51 discriminate the positional azimuth of the rotary board 23 by an electric signal from detecting elements 41, 42 which define the respective positional relation between magnetic bodies 42, 44 and the detecting elements 41, 42 and display the discriminated results on display elements 50, 52. Thus, the positional azimuth of the camera 21 set up on the rotary board 23 can be instantaneously discriminated by the display of a display device.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a video camera system for surveillance.

Conventional Structure and Problems Conventionally, in this type of system, the camera has been mounted on a rotary table that can be rotated horizontally and vertically. But in this case, what direction is the camera currently facing?

It was only possible to determine which location or subject was being photographed through the monitor image.

For this reason, the direction of the camera cannot be determined instantaneously, or when a similar subject is being photographed, the photographing position may be misidentified.

OBJECTS OF THE INVENTION The present invention aims to eliminate the above-mentioned drawbacks of the prior art, and to make it possible to instantly determine the position and direction of the camera.

Structure of the Invention In order to achieve the above object, the present invention provides means for detecting each horizontal and vertical direction of a rotary table on which a camera is installed,
Further, the rotational position of the rotary table is displayed based on this output signal.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the configuration of a surveillance video camera system, where 21 is a video camera, 22 is a monitor receiver, and 2
Reference numeral 3 denotes a turntable on which the video camera 21 is installed, 24 a remote control section for driving the turntable 23, 25 a display section for displaying the position and direction of the turntable, and 31 a link between the video camera 21 and the monitor receiver 22. A cable 32 is a cable connecting the rotary table 23 and the remote control unit 24.

FIG. 2 shows the rotary table 23, cable 32,
It shows a part of the remote control unit 24 and the display unit 25, 36 is the vertical rotation part of the rotary table, and the magnetic body 42
Corresponding to the vertical rotation detection element (for example, Hall element) 41
is provided so that an electric signal can be obtained from the element 41 according to the rotation of the rotating part 350. Reference numeral 36 denotes a horizontal rotating part of the rotary table, and a horizontal rotation detecting element (for example, a Hall element) 43 is provided corresponding to the magnetic body 44 so that an electric signal can be obtained from the element 43 in accordance with the rotation of the rotating part 36. I have to. 46.46 is an output voltage amplification unit for amplifying the output from the element 41.43; 4B is a horizontal and vertical direction information line included in the cable 32 of FIG. 1;
9.51 is a horizontal and vertical rotation angle (position direction) discrimination unit,
50.52 are display elements (for example, LEDs) arranged in one row.
). Further, FIG. 3 shows the display surface of the display section 25 of FIG. 1.

Next, the operation of the second embodiment will be explained. The cable 32 is controlled by a control signal from the remote control section 24.
The rotary table 23 is controlled via the rotary table 23, an object in that direction is photographed by the camera 21, and the image of the object can be viewed by the monitor receiver 22. At this time, an electrical signal corresponding to the rotation of the turntable 23 can be detected by the detection elements 41 and 43. The electrical signal detected by the AiI calibration is amplified by the amplifying sections 45 and 46, and input to the discriminating sections 49 and 61.

In the discrimination section, magnetic bodies 42, 44 and detection elements 41, 42
The position and direction of the rotary table 23 are determined based on electrical signals from the detection elements 41.42, and the results are displayed on the display elements 60.52. Therefore, the position and direction of the camera 21 provided on the rotary table 23 can be instantly determined from the display on the display 25 shown in FIG. This display element corresponds to the display element 50.52 at 71°72 in FIG.

Effects of the Invention As explained above with reference to the embodiments, according to the present invention, in addition to determining the position and direction of the camera through the monitor receiver, it is also possible to separately check the position and direction using the display, so that the instantaneous position and direction of the camera can be easily and easily determined. It can be determined without error.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of a monitoring video camera 7 stem according to an embodiment of the present invention, FIG. 2 is a detailed block diagram of a camera position/direction determination section of the same embodiment, and FIG. 3 is a display of camera position/direction. FIG. 41.43 ・・Rotation detection element, 49.51 ・・・
Rotation angle 'rJJ separate section, 50.52...display element.

Claims (1)

[Claims] A rotary table that rotates horizontally and vertically by holding a camera, an element that generates a signal according to the direction of rotation of the rotary table, and an output of the element to a control unit that controls the position and direction of the camera. A surveillance video camera system comprising a display section that displays the direction of the camera according to the direction of the camera.