JPH07107382A - How to switch the function of the fader lever on the video switcher - Google Patents

Abstract

(57) [Abstract] [Purpose] The operation panel surface can be made smaller and the cost can be reduced.
Smooth operation without distinguishing between video switching and specific operation. [Structure] The operation of the fader lever 2 is usually
A video switching operation (ACT1) is performed, but when the specific operation is called, the function is switched so as to control the progress degree of the specific operation. Moreover, as a condition for switching the operation, when the fader lever 2 is at the intermediate position, even if the specific operation is called, the operation is suspended and the key frame display 5 blinks (ACT.
2). Then, after the fader lever 2 reaches the upper end position, the fader lever 2 operates as a progress control of a specific operation, and the key frame display 5 is continuously turned on (ACT.
3). Furthermore, when the fader lever 2 reaches the lower end,
The process returns to the operation of controlling the degree of progress of switching the original video (ACT 4).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of switching the function of a fader lever in a video switcher for controlling the progress of video switching by operating the fader lever.

[0002]

2. Description of the Related Art A video switcher has a function of selecting an arbitrary image from a plurality of VTRs and cameras connected in parallel, switching (connecting) it, and sending it to a recorder. Currently, along with the digitization of VTRs, the digitization of video switchers is progressing.

In addition, editing including special effects cannot be considered without the combined use of a video switcher, DME (digital motion effect), and DVE (digital video effect). Then, the video switcher is digitized to have not only video switching but also DME and DVE functions, such as dissolve,
Some have an editing function for adding various special effects such as wipe and fade-in / fade-out to an image.

The above-mentioned video switcher is equipped with a switch for selecting various digital effects, an operation panel provided with a fader lever for switching images, and the like. For example, when performing an operation such as wiping to display another image so as to remove the currently displayed image, the degree of progress of image switching is usually controlled by operating the fader lever. That is, the image is switched according to the operation amount and the operation speed of the fader lever.

[0005]

By the way, in the above-mentioned conventional video switcher, a fader lever is separately provided in order to perform a specific operation which is an operation for obtaining a time effect such as a DME operation. . This DME
The operation has a special effect such as horizontal movement, vertical movement, rotation, or fade-in / fade-out of the image,
With such special effects, the transition time of the effect can be controlled. That is, a special effect is applied to the image according to the operation amount and the operation speed of the fader lever provided for the specific operation.

However, since the area occupied by the fader lever on the operation panel surface is relatively large in the video switcher, the provision of a plurality of fader levers has a problem that it hinders downsizing of the operation panel.

Further, since it is necessary to separately provide a fader lever, the cost is high, and in terms of operation, the two fader levers have to be operated separately, which causes a problem that they cannot be operated smoothly.

Therefore, the present invention aims to reduce the size of the operation panel surface,
An object of the present invention is to provide a method for switching the function of a fader lever in a video switcher, which can reduce costs and can be smoothly operated without distinction between video switching and specific operation.

[0009]

In order to achieve the above object, the method of switching the function of a fader lever in a video switcher according to the present invention is a video switcher for controlling the progress of video switching by operating the fader lever. When switching the function of the fader lever from the video switching operation to a specific operation that is an operation that produces an effect over time, when the fader lever is in the middle of its operable range, the switching to the specific operation is suspended. While continuing the video switching operation as it is, the specific operation is held and displayed, and when the fader lever reaches either end of the operable range, the identification is performed according to the operation of the fader lever. Performs actions and switches functions It indicates that, when the specific operation is completed, and performing the video sequence of the switching operation and the display operation and returning to the switching operation.

[0010]

According to the present invention, when the function of the fader lever is switched from the video switching operation to the specific operation, if the fader lever is in the middle, the switching to the specific operation is suspended and the video switching operation is continuously executed as it is. At the same time, the suspension display of the specific operation is performed. When the fader lever reaches either end, the specific operation is executed and the fact that the function has been switched is displayed. Further, when the specific operation ends, the operation returns to the video switching operation.

Therefore, by switching the function of one fader lever, it is possible to operate without switching the video switching and the specific operation.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the construction of a video switcher to which the function switching method of the video switcher fader lever of the present invention is applied. In the figure, the video switcher includes various operation switches and an operation panel provided with a fader lever for switching images.

On this operation panel, a video switching mode switch 1 for selecting a special effect mode of a conventional switcher such as MIX / WIPE, a fader lever 2, a fader lever indicator 3 showing the position of the fader lever 2, and a specific A specific action calling switch 4 for reading out an action and a key frame (hereinafter referred to as KF) indicator 5 are provided.

The MIX is a switch for selecting a mode for mixing two images, and the WIPE selects a mode for displaying another image so as to remove the currently displayed image. It is a switch. Also,
In the present embodiment, the above-mentioned specific operation corresponds to execution of a special effect on a key frame, and does not include new creation or editing (insert, delete) of a key frame.

Further, the control device 6 is composed of a CPU and the like, and interlocks the operations of the above-mentioned respective parts. The control device 6 operates according to the control signal CS1 supplied for the operation of the video switcher, while outputting the control signal CS2 for the video of the video switcher.

The operation of the above configuration will be described with reference to FIGS. FIG. 2 is a flow chart for explaining the operation of the video switcher in this embodiment, and FIG. 3 is a time chart for the above operation.

First, the operator selects either MIX or WIPE mode by the video switching mode switch 1. Next, as a normal operation of the fader lever, the fader lever 2 is operated from the lower end in the mode (MIX or WIPE) selected by the image switching mode switch 1 (operation ACT in FIG. 3).
1). At this time, the fader lever indicator 3 is displayed according to the position of the fader lever 2. Then, the image is switched according to the operation amount and operation speed of the fader lever 2.

Next, when the operator presses the specific action calling switch 4, the video switcher reads the specific action corresponding to the pressed specific action calling switch. The timing for calling the specific operation is arbitrary by the operator regardless of the position of the fader lever. However, the specific action is
This is an operation on the time axis, and the upper position of the fader lever 2 coincides with the start of the specific operation, and the lower position of the fader lever 2 corresponds to the end of the specific operation. Therefore, if the specific operation is executed at the same time as the calling of the specific operation, the specific operation temporally makes a wrong start point, and the operation is confused. Therefore,
Execution of the specific operation is suspended until the fader lever 2 reaches the upper (lower) end.

That is, the control device 6 first determines in step S1 shown in FIG. 2 whether or not the specific operation calling switch 4 (in this example, any one of 1 to 4) is pressed. When the specific action calling switch 4 is not pressed, the determination in step S1 is "NO", and the determination in step S1 is repeated. When the operator presses the specific action calling switch 4, the determination in step S1 is "YES", and the process proceeds to step S2. In step S2, it is determined whether the fader lever 2 is at the upper (lower) end. This is for determining whether or not the fader lever 2 has reached the upper (lower) end.

If the fader lever 2 has not reached the upper (lower) end, the process proceeds to step S3, where the key frame display 5 blinks to indicate that the specific operation is suspended (the operation of FIG. 3). ACT2). Therefore, the specific operation is not performed, and the video switching operation is continuously executed as it is.

When the fader lever 2 reaches the upper (lower) end, the judgment result in step S2 is "YE
S ”, and the process proceeds to step S4. In step S4,
The function of the fader lever 2 is switched to operate so as to control the progress of a specific operation, and the operation AC
During T3, the key frame display 5 is continuously illuminated. Then, the specific operation proceeds according to the position of the fader lever 2 (operation ACT3 in FIG. 3).

Next, in step S5, it is determined whether or not the specific operation is completed. When the specific operation is not completed, the determination result in step S5 is “NO”, the process returns to step S4, and the function of the fader lever 2 is used as the progress control of the specific operation until the specific operation is completed. The key-frame display 5 is continuously illuminated.

When the above-mentioned specific operation is completed, the result of the determination in step S5 is "YES", and the operation proceeds to step S6. In step S6, fader lever 2
Function is returned to the video switching operation, and the display of the key frame display 5 is turned off (operation ACT in FIG. 3).
4).

As described above, in the present embodiment, as the operation of the fader lever 2, the degree of progress of video switching is usually controlled, but when the specific operation is called, the degree of progress of the specific operation is once controlled. ,
Switch its function. Moreover, as a condition for switching the operation, when the fader lever 2 is at the intermediate position,
Even if a specific operation is called, the operation is suspended, and the fader lever 2 operates as a progress control for the specific operation after reaching the upper (lower) end position. Return to the control operation. In this way, by switching the function of one fader lever 2 according to the position of the fader lever, it is possible to operate smoothly without distinguishing between video switching and specific operation.

In the above-described embodiment, the function switching operation is the same even if the upper and lower ends of the fader lever are exchanged.

[0027]

According to the present invention, in a video switcher for controlling the degree of progress of video switching by operating the fader lever, the function of the fader lever is effective with the passage of time from the video switching operation. When switching to a specific operation that is an operation, if the fader lever is in the middle of its operable range, the switching to the specific operation is suspended and the video switching operation is continuously executed as it is, and the specific operation is performed. When the fader lever reaches either end of the operable range, the specific operation is executed according to the operation of the fader lever, and it is displayed that the function has been switched, When the operation is completed, a series of switching operations of returning to the video switching operation and Because you perform 示動 operation, miniaturization of the operation panel surface, cost reduction can be, without distinguishing the specific operation and video switching, advantage smoothly be operated is obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a video switcher to which a fader lever function switching method according to the present invention is applied.

FIG. 2 is a flow chart for explaining the operation of the video switcher in the same embodiment.

FIG. 3 is a time chart for explaining the operation of the video switcher in the embodiment.

[Explanation of symbols]

 1 Video switching mode switch 2 Fader lever 3 Fader lever / indicator 4 Specific operation call switch 5 Key frame display 6 Control device

Claims (1)

[Claims] 1. A video switcher for controlling the degree of progress of video switching by operating a fader lever, wherein the function of the fader lever is changed from a video switching operation to a specific operation that is an operation that produces an effect over time. When switching, if the fader lever is in the middle of its operable range, the switching to the specific operation is suspended,
While continuing to execute the video switching operation as it is, the specific operation is held and displayed, and when the fader lever reaches one end of the operable range, the specific operation is performed according to the operation of the fader lever. And switching the function is displayed, and when the specific operation is completed, a series of switching operation and display operation of returning to the video switching operation are performed, and the function switching of the fader lever in the video switcher is performed. Method.