JPH1188728A - Information display device for television camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display lens information of the other television camera on the view finder of a self-television camera, to permit a camera man to easily learn lens information of the other television camera and to easily grasp the photographing situation of the other television camera. SOLUTION: The camera control part 52 of the television camera detects a self-zoom setting position, inputs the zoom setting position of the other television camera from CCU 40 and generates an indicator image 80 based on the zoom setting positions. The self-camera video is displayed on the view finder 16 and the indicator image 80 is displayed. The camera man can grasp the photographing situation of the other television camera while he views the view finder 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television camera information display device, and more particularly to a television camera information display device for displaying lens information of another television camera on a viewfinder of the television camera.

[0002]

2. Description of the Related Art Conventionally, when photographing using a plurality of television cameras in a studio or the like, if a photographer operating a predetermined camera wants to know the photographing status of another camera, he or she needs to use a return switch. The camera image taken by another camera is displayed on the viewfinder of the camera.

A return switch is generally provided in a zoom rate or a switch box for controlling a television lens. When a photographer presses the return switch when necessary, a return (RET) signal is transmitted from the television lens to the camera. The return signal is sent to a camera control unit (CCU) that manages images and the like of a plurality of cameras. CCU
Receives a return signal from a predetermined camera, transmits a camera image of another camera (a camera specified by the return signal) to the camera, and causes the viewfinder of the camera to display the other camera image.

[0004] Thereby, the cameraman can see the image of another camera to know the shooting condition of the other camera, and can shoot an image different from that of the other camera. Conventionally, many television lenses employ a zoom and focus operation method using one axis and two operations. That is, a focus operation is performed by rotating the operation rod, and a zoom operation is performed by moving the operation rod back and forth. In this case, the cameraman can roughly know the focal length of the zoom of the TV lens by looking at the position of the front and rear movement of the operation stick of another camera,
As a result, it was possible to grasp what kind of video the camera was capturing.

[0005]

At present, television cameras often use a television lens driven by a servomotor, and when such a television lens is used, focus demand or zooming is required. A zoom operation and a focus operation are performed by a controller called a rate demand. For this reason, it is impossible to grasp the image of another camera depending on the operation condition of the operation stick. Therefore, when such a TV lens is used, another camera image is displayed on the viewfinder by the return switch, or a zoom setting position, an aperture setting position, or the like provided on a side surface of the TV lens or the like. It is necessary to grasp the shooting conditions of the other cameras by looking at the indicators shown.

However, when the photographing state of another camera is grasped by the return switch, the ON / OFF operation of the return switch may be several tens of times per minute, which requires complicated labor and other troubles. There is a problem that the camera image of the camera itself is not displayed while the camera image is displayed. Also, when grasping the shooting situation of another camera by the indicator displayed on the side of the TV lens or the like, since the normal indicator is installed to check the shooting situation of its own camera, In addition to a problem that the display is small and difficult to see from a distant place, there is also a problem that the indicator becomes invisible due to an obstacle or the like. In addition, there is a problem that it is not preferable to operate the camera by looking away from the viewfinder and checking the indicator of another camera.

[0007] The present invention has been made in view of such circumstances, and a television capable of easily knowing the lens information of another television camera so that the photographing situation of the other television camera can be easily grasped. It is an object of the present invention to provide a camera information display device.

[0008]

In order to achieve the above object, the present invention provides a viewfinder for a first television camera among a plurality of television cameras when an object is photographed by the plurality of television cameras. A television camera information display device for displaying lens information of another television camera, wherein the lens information detection means for detecting the lens information of the other television camera, and the lens information detected by the lens information detection means, And display means for displaying on the viewfinder of the first television camera.

According to the present invention, lens information of another television camera is detected, and the lens information is displayed on the viewfinder based on the detected lens information. This allows the cameraman to know the lens information of another TV camera while looking at the viewfinder on which his / her camera image is displayed, and easily grasp the shooting situation of the other TV camera.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an information display device for a television camera according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is an overall system diagram of a broadcast television camera to which the present invention is applied. The television camera 10 shown in FIG. 1 includes a lens unit 12 and a camera unit 14, and the camera unit 14 is provided with a viewfinder 16. The lens unit 12 and the camera unit 14 are electrically connected to each other via an interface.
Is fixed on the platform 18.

A pan / tilt bar 2 extended from the camera platform 18
A lens controller 26 for operating a zoom speed or the like is attached to the second grip section 24. The lens controller 26 is connected to the lens unit 12 via a cable 28, and the cameraman can adjust the zoom by operating the thumb ring 30 of the lens controller 26 while watching the image displayed on the viewfinder 16. I can do it.

The television camera 10 is connected to a camera control unit (CCU) 40 via a cable 36, and camera images taken by the television camera 10, lens information of the lens unit 12, and the like are transmitted to the CCU 40. . Another TV camera 10 'is connected to the CCU 40 in the same manner as the TV camera 10, and camera images and lens information taken by the TV camera 10' are also transmitted to the CCU 40 in the same manner as the TV camera 10. . The components of the television camera 10 'are denoted by the same reference numerals as those of the television camera 10 and are denoted by dashes "", and the description thereof is omitted.

The CCU 40 controls a plurality of television cameras as a whole. The processing content according to the present embodiment includes transmitting lens information of a television camera connected to the CCU 40 to each television camera as described later,
Each TV camera can check lens information of another TV camera. Although two television cameras are connected to the CCU 40 in FIG. 1, it is possible to connect two or more television cameras to the CCU 40 within the number that can be processed.

Next, a description will be given of a process of causing the television camera 10 to display its own lens information and the lens information of the other television lens 10 'on the viewfinder in the system configured as described above. FIG. 2 is a diagram showing a configuration of a processing circuit for displaying lens information in the television camera 10. As shown in FIG.
Is equipped with a lens control unit 50.
Reference numeral 0 denotes a camera control unit mounted on the camera unit 14 which detects set positions (set values) of optical members such as a focus lens, a zoom lens, a diaphragm, and an extender lens of the lens unit 12 and uses these set positions as lens information. 52.

The camera control unit 52 includes the lens control unit 5
The lens information transmitted from 0 is transmitted to the CCU 40, and lens information of another television camera is input from the CCU 40. In the case of the system shown in FIG. 1, the only other TV camera is the TV camera 10 '.
Hereinafter, a case where there is one TV camera 10 'as another TV camera will be described.

Further, the camera control section 52 includes the camera section 14.
An image signal photoelectrically converted by an image pickup device such as a CCD mounted on the camera is input from an image pickup circuit 54, and various kinds of signal processing are performed on the image signal to generate a video signal. Then, the video signal is transmitted to the CCU 40 and output to the viewfinder 16 to display the camera image of the camera on the viewfinder 16.

Further, the camera control section 52 determines the zoom setting positions of the television camera 10 and the television camera 10 'based on the lens information of the television camera 10 inputted from the lens control section 50 and the lens information of the television camera 10' inputted from the CCU 40. Is detected. Then, an indicator image indicating the zoom setting position is generated based on these zoom setting positions, and this indicator image is displayed on the viewfinder 16. That is, the indicator image is combined with the video signal to be output to the viewfinder, and this video signal is output to the viewfinder 16.

FIG. 3 is a diagram showing an example of an indicator image displayed on the viewfinder 16 by the above processing. As shown in the figure, a camera image of the television camera 10 is displayed on the viewfinder 16, and an indicator image 80 is displayed above the viewfinder 16. The indicator image 80 includes “A” on the screen,
The zoom setting positions of the two television cameras indicated by 'B' are displayed as bar graphs. The television camera indicated by “A” in the upper row indicates its own television camera 10, and its zoom setting position is indicated by a bar “−” 82 between display characters “W” and “T” indicating wide and tele. Is displayed by the display length (display range). That is, when the zoom setting position is at the wide end, the bar 82 is not displayed, and as the zoom setting position moves from the wide side to the tele side, the display range of the bar 82 becomes wider in accordance with the zoom setting position. It is enlarged from the (W) side to the tele (T) side. When the zoom setting position moves to the telephoto end, the display range of the bar 80 is extended to the vicinity of the display character 'T'.

On the other hand, the television camera indicated by "B" at the subsequent stage indicates the zoom setting position of the television camera 10 ', and the display contents are the same as those in the case of "A". As described above, the zoom setting position of the other television camera 10 ′ is displayed on the viewfinder 16 together with the own television camera 10, so that the cameraman operating this television camera 10 can use the screen of the viewfinder 16 to display another zoom position. It is possible to know the lens information (zoom setting position) of the television camera 10 ', and easily grasp the shooting situation of another television camera from this lens information.

Further, the zoom setting positions of both the own television camera and the other television camera are displayed, and it is possible to selectively display only the zoom setting position of a desired television camera by using a switch or the like. You may. As described above, in the above embodiment, the two television cameras 10, 1
0 'is connected to the CCU 40 and the two TV cameras 10,
Although the case where shooting is performed by 10 'has been described, when more TV cameras are connected to the CCU 40, the zoom setting positions of all the TV cameras can be displayed on the viewfinder 16 similarly to the above embodiment. it can.

Further, in the above embodiment, the zoom setting positions of the own TV camera and the other TV cameras are always displayed on the viewfinder. However, whether the zoom setting positions are displayed on the viewfinder by a switch or the like is determined. The cameraman or the like may be able to appropriately select the setting, or only the desired zoom setting position of the television camera may be selectively displayed.

Further, in the above embodiment, only the zoom setting position is displayed on the viewfinder, but other lens information (information on focus, aperture, extender, etc.) may be displayed. Alternatively, only desired lens information may be selectively displayed from the lens information. Further, not only the lens information but also other information (for example, an identification number of a television camera that is shooting a camera image currently used for broadcasting) may be displayed.

In the above embodiment, the zoom setting position is displayed by the bar graph 80. However, the present invention is not limited to this, and the zoom setting position may be displayed by another method (for example, a numerical value indicating the setting position). Good. Further, in the above embodiment, the lens information is displayed so as to be superimposed on the camera image. However, the present invention is not limited to this, and an area for displaying only the lens information may be provided in the viewfinder 16. The display of the camera image and the display of the lens information may be switched by a switch or the like.

In the above-described embodiment, the process of synthesizing the camera image and the indicator image of the lens information (zoom setting position) is performed by the camera control unit 52 in the camera unit 14. However, the present invention is not limited to this. , CCU 40. In this case, the cameraman of each television camera can switch between an image displaying the indicator image on the viewfinder and an image not displaying the indicator image by a return switch or the like.

That is, conventionally, when the CCU 40 receives the return signal of the return switch from the television camera, the camera image of the other television camera is transmitted to the television camera, and the other camera image is displayed on the viewfinder. However, when the camera image and the indicator image are combined by the CCU 40, the camera image of the television camera and the indicator image are output to the television camera that outputs a return signal instead of transmitting the camera image of another television camera. Is transmitted, and the image is displayed on the viewfinder. Thus, the indicator image can be displayed on the viewfinder without changing the conventional television camera. In addition, it is possible to selectively perform display of a camera image of another TV camera or display of an image obtained by combining the camera image and the indicator image with the return switch (note that this point). The same applies to the case where the camera unit 14 combines the indicator image with the camera image.)

[0026]

As described above, according to the information display apparatus for a television camera according to the present invention, the lens information of another television camera is detected and this lens information is displayed on the viewfinder. The user can know the lens information of another TV camera while looking at the viewfinder on which his / her camera image is displayed, and can easily grasp the shooting situation of the other TV camera.
This saves the photographer the trouble of having to frequently operate the return switch to display the camera image of another TV camera on the viewfinder and directly looking at the indicators of other TV cameras as in the past. it can.

[Brief description of the drawings]

FIG. 1 is an overall system diagram of a broadcast television camera to which the present invention is applied.

FIG. 2 is a diagram illustrating a configuration of a processing circuit that displays lens information in a television camera.

FIG. 3 is a diagram showing a configuration of an indicator image displayed on a viewfinder of a television camera.

[Explanation of symbols]

 10, 10 ': TV camera 12: Lens unit 14: Camera unit 16: Viewfinder 26: Lens controller 40: Camera control unit (CCU) 50: Lens control unit 52: Camera control unit 54: Image pickup circuit

Claims (5)

[Claims] 1. When a subject is photographed by a plurality of television cameras, information of a television camera for displaying lens information of another television camera on a viewfinder of a first television camera among the plurality of television cameras. A display device, a lens information detecting unit that detects lens information of the other television camera, a display unit that displays lens information detected by the lens information detecting unit on a viewfinder of the first television camera, An information display device for a television camera, comprising: 2. The television camera according to claim 1, wherein the display unit combines the lens information with an image of the first television camera, and displays the combined image on the viewfinder. Information display device. 3. The lens information detecting means detects the lens information of the first television camera together with the lens information of the other television camera, and the display means detects the lens information of the first television camera together with the lens information of the other television camera. 2. The information display device for a television camera according to claim 1, wherein the lens information of the first television camera is displayed on a viewfinder of the first television camera. 4. The information display device according to claim 1, wherein the lens information is at least one of a zoom setting position, a focus setting position, an aperture setting position, and an extender lens setting position. 5. The information display device for a television camera according to claim 1, wherein the display unit displays the lens information in a graph.