JP2535567B2 - TV camera pan head device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pan head device for a television camera, and more particularly to a pan head device for a broadcast television camera capable of presetting camera work of the television camera.

[Conventional technology]

Some pan heads for broadcasting TV cameras have a preset function for camera work. Such a pan head device for a television camera, for example, when the television camera is turned from the current shot A shown in FIG. 5 to a preset shot B, pan, tilt, height, zoom A time until the direction is changed from shot A to shot B is preset together with the focus position information signal. The television camera changes its direction from shot A to shot B based on these setting conditions.

[Problems to be solved by the invention]

However, when the time for changing the direction from the shot A to the shot B is set in advance, the conventional pan / tilt head device of the television camera cannot change the time for reaching the shot B in the middle of time. However, at the broadcasting site, if there is a set time to stream commercials, etc., there is a demand to change the remaining time while changing the direction of the TV camera, and conventional pan head devices for TV cameras are compatible. could not.

Further, in a conventional television broadcasting site, the operator's experience has been used to grasp how long the television camera that has left shot A reaches shot B.

The present invention has been made in view of such circumstances,
It is an object of the present invention to provide a pan head device for a television camera that can display the arrival time of the television camera while the preset television camera is changing its direction and can change the arrival time.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention makes a television camera turn from an arbitrary first direction to a second direction in a pan head device for a television camera that operates based on preset camera work. First driving means, second driving means for driving the zooming mechanism and focus mechanism of the television camera, and remaining time display for displaying the remaining time until the television camera reaches the second direction from the first direction. Means, the remaining time correction means for changing the time to reach the second direction while changing the direction of the television camera, and the first and second drive based on a signal from the remaining time correction means. Control means for controlling the means to change the direction of the television camera in the second direction.

[Action]

In the pan / tilt head device for a television camera according to the present invention, the television camera can be turned from the arbitrary first direction to the second direction by the first driving means, and the zoom mechanism and the focus mechanism of the television camera can be changed to the second direction. It is driven by the driving means.

The remaining time until the television camera reaches the second direction from the first direction is displayed on the remaining time display means, and the time until the television camera reaches the second direction while the television camera is turning. Can be changed by the remaining time correction means.

As a result, the time to the arrival direction of the TV camera can be accurately changed while the TV camera is changing its direction.

〔Example〕

Hereinafter, a pan head device for a television camera according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows the configuration of an embodiment of a pan / tilt head device for a television camera according to the present invention. This pan / tilt head device for a television camera is composed of a TV camera 2, a tripod 4, and a pan head 6. .

The TV camera 2 is, for example, a camera for TV broadcasting, the tripod 4 supports the TV camera 2 in an appropriate spatial position, and the platform 6 holds the TV camera 2 in a desired direction, for example, pan, tilt, and height. The direction is changed by operation.

The platform 6 is connected to an operation console 8 that drives and controls the platform. The platform 6 has a drive unit including a motor or the like (not shown) for turning the television camera 2 in a desired direction. Further, the television camera 2 has a lens driving unit (not shown) for controlling photographing magnification and focusing.

The operation console 8 of the platform 6 is composed of a control unit 10, a memory unit 12, an operation unit 14, an input port 16, a remaining time display unit 18, an output port 20, and an input / output port 22. There is.

The control unit 10 is composed of a CPU, a timer and the like, and the control unit 10 controls the platform 6 as a whole. Also, the control unit
A memory unit 12, an input port 16, an output port 20, and an input / output port 22 are coupled via a bus line 11 including a control bus and a data bus.

The memory unit 12 is composed of a memory (ROM, RAM) that stores software programs and various data (for example, position information of the television camera) necessary for performing various controls.

The operation unit 14 is composed of a plurality of switches for setting camera work, and the operation unit 14 is used for the TV camera 2
Pan switch (PAN) 2 for setting the horizontal movement amount of the
8, tilt switch (TILT) 30 to set the tilt angle,
Height switch (HEIGHT) 32 to set the height, zoom switch (ZOOM) 34 to set the shooting magnification, focus switch (FOCUS) 36 to adjust the focus, switch group to set each shot (38A, 38B, 38C ...), a shot switch 38, a time setter 24 for setting the time required to change the direction between shots, and the remaining moving time of the TV camera 2 is corrected while the direction of the TV camera is being changed. The remaining time compensator 40 is provided.

The switches 28, 30, 32, 34, 36 and 40 of this embodiment are
Is a mechanical switch, but is not limited to this, and each switch may be a potentiometer and an A / D converter.

The input port 16 is a one-way interface that connects the control unit 10 and the operation unit 14 and allows setting data from the operation unit 14 to be input to the control unit 10.

The remaining time display unit 18 digitally displays the remaining time of the moving time required for the television camera 2 to reach a preset direction.

The output port 20 is a one-way interface that connects the control unit 10 and the display unit 18 and allows the time data stored in the memory unit 12 to be output to the display unit 18 by the control unit 10.

The input / output port 22 connects the control unit 10 to the lens drive unit of the TV camera 2 and the mechanism control unit of the camera platform 6 so that various kinds of data can be transmitted and received between them. Interface.

Next, referring to the flow chart shown in FIG.
The operation of the camera platform device having the above configuration will be described.

Prior to shooting, the TV camera is preset. That is, the camera work of the TV camera set is performed via the pan switch 28, the tilt switch 30, the height switch 32, the zoom switch 34, the focus switch 36, and the shot switch 38 of the operation unit 14, and the TV A movement amount x and a shot movement time t for changing the direction between shots of the camera 2 are set and stored in the memory 12. After such a preset operation is completed, the shot switch 38 is operated to start photographing at a predetermined camera angle.

The control unit 10 has a function t = f which indicates the rotation characteristic of the platform 6 as shown in FIG. 3 based on the movement amount x and the movement time t required to change the direction of the television camera 2 with the start of the photographing.
Create (x). The function t = f (x) shown in FIG.
The first shot A (x
and the amount of movement x of the television camera 2 from _Shota) to the next shot _B (x shotB), shows the correlation between the movement time t. The platform 6 is driven and controlled in a predetermined direction for a predetermined time based on the control data obtained by the function t = f (x). Hereinafter, for convenience of explanation, the function t = f
(X) shows t = a ₀ x (where a
_The description will be simplified to the form of ₀ ).

When the function t = a ₀ x for photographing is created (step 10
0), the movement of the TV camera 2 in a predetermined direction, that is, the platform 6
Drive control is started (step 101). Control unit 10
Outputs control data for changing the direction of the television camera 2 to the drive unit of the camera platform 6 via the input / output port 22 based on the function t = a ₀ x. As a result, the drive unit of the platform 6 changes the direction of the television camera 2 to the predetermined direction based on the control data from the control unit 10 (step 102).

When the direction of the TV camera 2 is changed, the remaining time up to the shot B (x _shtoB ) is calculated based on the current direction (step 103), and time data indicating the remaining time is output to the remaining time display unit 18. Output via port 20. The remaining time display unit 18 digitally displays the remaining time based on the input time data (step 104).

If the change (correction) of the moving time of the TV camera 2 is not instructed during shooting, the process proceeds to step 107 (step 10
5) On the other hand, when the change of the remaining time is instructed midway, the function t = a ₀ x is changed based on the changed remaining time and the current direction of the television camera 2 (for example, the moving amount x ₀ ). (Steps 105, 106). That is, when the time until the television camera 2 arrives in the direction of the shot B (x _shotB ) is set earlier than the time t ₀ before the change, in the function t = a ₀ x, a ₀
Is set as a ₁ (however, a ₁ <a ₀ ) and a function t = a ₁ x + c (where c is a constant) shown by numeral 92 in FIG. 4 is created so that the movement end time becomes the time t _1. To Further, when the movement end time is set to be later than the time t ₀ before the change, a ₀ is set as a ₂ (however, a ₂ > a ₀ ) in the function t = a ₀ x, and the number 94 is given in FIG. The function t = a ₂ x + b shown here (where b is a constant) is created so that the movement end time becomes the time t ₂ .

After the processing in step 106 is completed, step 1
In step 107, it is determined whether or not the movement amount x of the television camera 2 has reached the target value. Judgment result,
If it is judged that the TV camera 2 has not reached the target value yet, it is synchronized with the timer so that the next control amount of the TV camera 2 (pan head 6) is calculated every 1/60 seconds. Then, the process proceeds to step 102 (step 108).

On the other hand, if it is determined in step 107 that the television camera 2 has reached the target value, the process is terminated and the process routine proceeds to another process routine.

As described above, in the TV camera set of the present embodiment, the remaining time of the TV camera 2 is displayed on the display unit 18 of the console 8 during shooting, and the time for changing the direction of the TV camera 2 is being adjusted. It is configured to be able to.

Therefore, even if the shooting does not end shortly before the pre-programmed TV commercial airing time, it can be aired without any trouble by advancing or delaying the movement end time.

In the pan / tilt head device for a television camera according to the present invention, it is possible to change the time for changing the direction of the television camera between the two shots from shot A to shot B shown in the above embodiment and display the remaining time to the target. In addition to the above, it is possible to display the time for changing the direction of the TV camera between each shot and the remaining time to the target even when the TV camera is continuously moved between a plurality of shots.

〔The invention's effect〕

As described above, in the pan / tilt head device for a television camera according to the present invention, while the television camera is being turned from an arbitrary first direction to a second direction, the rest until the second direction is reached. Since the time is displayed and the arrival time can be changed on the way, the remaining time to the target direction can be changed accurately while the direction of the TV camera is being changed.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an overall configuration of a TV camera set to which a television camera platform according to the present invention is applied, and FIGS. 2 and 3 are characteristic diagrams showing a rotation characteristic of a platform. Four
FIG. 5 is a flowchart showing a photographing processing procedure, and FIG. 5 is an explanatory diagram for explaining a conventional technique. 2 ... camera, 4 ... tripod, 28, 30, 32, 34, 36, 38 ...
… Switch, 10 …… Control section, 12 …… Memory section, 16 …… Input port, 18 …… Display section, 20 …… Output port, 22 …… I / O port, 24 …… Time setting unit, 40 …… Remaining time compensator.

Claims (1)

(57) [Claims] 1. A pan head device for a television camera which operates based on preset camera work, comprising first driving means for changing the orientation of the television camera from an arbitrary first direction to a second direction. Second drive means for driving the zooming mechanism and focus mechanism of the television camera, remaining time display means for displaying the remaining time until the television camera reaches the second direction from the first direction, and the orientation of the television camera The television camera by controlling the first and second driving means on the basis of the signal from the remaining time correcting means for changing the time until reaching the second direction while changing the A pan head device for a TV camera, comprising: