JPH06311419A - Centralized controller of television camera - Google Patents

Abstract

PURPOSE:To facilitate the matching adjustments between plural cameras when they are adjusted by automatically switching the video signal of a camera to be a reference and the video signal of an adjusting camera at high speed and performing an overlapped display. CONSTITUTION:A camera video signal switch circuit 2 is connected with video signals 2a, 2b,... of plural, cameras, and the video signal of a pertinent camera is outputted as a camera video output signal 2c by the camera video selection signal 3c by the selection of a camera selection switch 6. At this time, the camera video selection signal 3c is the signal where the video selection signal 3a of a camera to be a reference and the video selection signal 3b of an adjusting camera are switched by a switching signal 3d switching at high speed in an overlapping display control circuit 3. Therefore, the camera video output signal 2c outputted from the camera video signal switching circuit 2 becomes the video signal where the video signal of the camera to be a reference and the video signal of the adjusting camera are switched at high speed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a centralized control device for a television camera.

[0002]

2. Description of the Related Art Conventionally, there has been a television camera centralized control unit (hereinafter abbreviated as SCU) as a means for concentrating a plurality of cameras at one place and adjusting them by remote control. (For example, the technique described in Japanese Patent Publication No. 223070). This SCU uses one of multiple cameras as a reference camera at one location, and sequentially switches and compares the reference camera and other cameras to be adjusted to adjust the cameras. It is very convenient to set up all the cameras in the same state, such as color matching.

[0003]

However, in order to confirm whether or not the adjustment state of one reference camera and the adjustment state of another camera are the same, the camera video signals of those cameras are switched. There is a drawback in that the operation of switching the video signal of the reference camera and the video signal of the camera being adjusted and the operation of re-adjusting the camera being adjusted must be frequently repeated. It is an object of the present invention to eliminate these drawbacks and facilitate alignment adjustment between cameras when adjusting a plurality of cameras.

[0004]

In order to achieve the above object, the present invention provides a means for automatically switching a video signal of a reference camera and a video signal of a camera being adjusted at high speed and displaying them in an overlapping manner. It is configured to have.

[0005]

As a result, when adjusting a plurality of cameras, the video signals of the reference camera and the camera being adjusted can be observed at the same time, so that the adjustment adjustment with the reference camera can be performed very easily.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The overall structure of a centralized control device for a television camera of the present invention will be described below with reference to FIG. Camera control signals 1a, 1b, ... From a plurality of cameras (not shown) are connected to the camera control signal switching circuit 1. Here, when selecting a camera to be adjusted, the corresponding camera number switch is pressed by the camera selection switch 6, and the generated camera control selection signal 1c causes the control signal 1d of the corresponding camera to be input to the camera control signal input / output circuit 4. Connected and allows control of the camera to be adjusted. Further, the camera video signal switching circuit 2 is connected with video signals 2a, 2b, ... Of a plurality of cameras (not shown), and the corresponding camera is selected by the camera video selection signal 3c selected by the camera selection switch 6. Is output as the camera image output signal 2c.

At this time, the camera image selection signal 3c is switched in the superposition display control circuit 3 by the switching signal 3d for switching the image selection signal 3a of the reference camera and the image selection signal 3b of the camera to be adjusted at high speed. It is the signal that was sent. Therefore, since the camera video output signal 2c output from the camera video signal switching circuit 2 is a video signal in which the video signal of the reference camera and the video signal of the camera to be adjusted are switched at high speed, they are respectively displayed on a video monitor (not shown). It seems that the images of are superimposed and displayed. Here, these various selection signals 1c, 3a and 3b are output via the camera selection switch 6 and the on / off signal output circuit 5. The selection of the camera to be adjusted is selected and operated by the camera selection switch 6, and the adjustment of the selected camera is adjusted using the corresponding adjuster of the camera adjusting means 7. CP
U8 controls each of these circuit means. These configurations and operations are publicly known and are not directly related to the present invention, and therefore detailed description thereof will be omitted.

Next, one embodiment of the present invention will be described in more detail with reference to FIG. The overlay display control circuit 3 is a switching circuit that switches at high speed between the video selection signal 3a of the reference camera and the video selection signal 3b of the camera to be adjusted, and a switching circuit of about 4 circuits according to the number of bits of the selection signal. is necessary. Here, the overlay display control circuit 3 that switches between the image selection signal 3a of the reference camera and the image selection signal 3b of the camera to be adjusted has the switching signal 3d low when the overlay display on / off control signal 3e is off. The level is reached and the image selection signal 3a of the camera to be adjusted is selected. When the overlay display on / off control signal 3e is on, the switching signal 3d switches between the high level and the low level in the cycle of the high-speed overlay switching pulse 3f for overlay display, so that the video selection signal 3a of the reference camera is selected. The image selection signal 3b of the camera to be adjusted is switched at high speed, and is output from the overlay display control circuit 3 as a camera image selection signal 3c.

Here, the high-speed switching pulse 3f is a signal for switching between a high level and a low level at a period of, for example, 2H (twice the horizontal scanning period of the camera) or 2V (twice the vertical scanning period of the camera). (Horizontal drive signal) or VD
(Vertical drive signal) can be divided and easily created. FIG. 3 shows an example of display of the camera video output signal 2c on the video monitor according to the application of the present invention. This is the camera number 1 (for example,
The video signal 2a of the reference camera) and the video signal 2b of the camera number 2 (for example, the camera to be adjusted) are displayed in an overlapping manner.

[0010]

According to the present invention, when a plurality of cameras are adjusted to each other, the video signals of the cameras can be compared with each other without manually repeating the switching of the video signals. Therefore, adjustment of a plurality of cameras becomes easy and accurate.

[Brief description of drawings]

FIG. 1 is a block diagram showing the overall configuration of the present invention.

FIG. 2 is a block diagram showing an embodiment of the present invention.

FIG. 3 is a diagram showing a display example on a video monitor according to the present invention.

[Explanation of symbols]

1: camera control signal switching circuit, 2: camera video signal switching circuit, 3: overlay display control circuit, 4: camera control signal input / output circuit, 5: on / off signal output circuit, 6: camera selection switch, 7: Camera adjusting means, 8: CPU, 1
a, 1b, 1d: camera control signal, 1c: camera selection signal, 2a, 2b: camera image signal, 2c: camera image output signal, 3a, 3b, 3c: image selection signal, 3d: switching signal, 3e: superposition Display on / off control signal, 3
f: High-speed switching pulse for overlay display.

Claims (1)

[Claims] 1. A central control device for a television camera for remotely adjusting and controlling a plurality of television cameras,
There is provided means for switching the video signal of one of the plurality of television cameras, which serves as a reference, and the video signal of another predetermined television camera to be adjusted and controlled, at high speed, and superimposing them. Centralized control device for television camera characterized in that.