JPH08256285A - Image display processing unit for prompter - Google Patents

Abstract

PURPOSE: To allow the user to view both an original image and an on-air image simultaneously without frequent switching of the original image and the on-air image. CONSTITUTION: The prompter displaying an original on its display section is provided with a generating circuit 27 receiving an original video signal and generating a superimpose signal comprising only characters, a level shift circuit 28 decreasing the amplitude of an on-air video signal, a mixer circuit 30, and a white level setting device 31. The mixer circuit 30 and the white level setting device 31 are used to superimpose a white character superimpose signal onto the on-air video signal whose amplitude is decreased to display two images simultaneously. An the two-image processing means, the picture-in-picture method may be adopted. Furthermore, an operation section 20 and a changeover circuit 33 are provided, and any display of two images 23, an on-air image 22 and an original image 21 is selected by the operation of the operation section 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a prompter image display processing apparatus, and more particularly to a display processing configuration of a prompter apparatus capable of displaying not only a document read by a newscaster or the like but also an image being broadcast.

[0002]

2. Description of the Related Art In a broadcast by a television camera, a prompter device having a display unit disposed near the television camera is used. The prompter device is used for various manuscripts read by newscasters, moderators, performers, etc. Can be displayed. In this type of prompter device, not only the original document is displayed, but also the image (video) on the air can be selectively displayed by a switching operation.

FIG. 7 shows the structure of a conventional image display (image switching) processing device for a prompter. As shown in FIG. 7, for example, the operation unit 1 arranged on the newscaster side is A switch 2 for selecting a document image and a switch 3 for selecting an image being broadcast (ON AIR) are provided. This operation unit 1 is connected to a video selector 4, which is supplied with a video signal of a document taken by a document camera from a terminal 5 and an on-air video signal from a terminal 6 to the television. Supplied from a camera, etc. Then, a switching circuit 7 for selecting these video signals is provided, and terminals c and d of the switching circuit 7 are switched by a control signal from the operation unit 1.

According to the above-described image switching structure, when the newscaster or the like pushes the switch 2 of the operation unit 1, the switching circuit 7 is connected to the terminal c in the video selector 4.
Then, the video signal of the original is supplied from the output terminal 8 to the prompter display section, and the original is displayed on this display section. On the other hand, when the switch 3 of the operation unit 1 is pressed, the switching circuit 7 is switched to the terminal d side, and an on-air video signal is output to the output terminal 8.
An on-air image is displayed on the display unit. Therefore, the newscaster or the like can appropriately select the original and the on-air image to be read by the operation unit 1.

[0005]

However, in the conventional prompter device, the on-air image can be checked as needed while reading the original, but the original cannot be viewed while the on-air image is displayed. The switching of the display image on the operation unit 1 is performed in a relatively short time, and the operation may be complicated. In particular, when the scene or content during broadcasting changes rapidly, there has been a problem that the image display function must be changed frequently, and the document display function cannot be fully exerted.

The present invention has been made in view of the above points, and an object of the present invention is to provide an image display processing apparatus for a prompter capable of simultaneously viewing both images of a document and on-air without frequently switching the images. To provide.

[0007]

In order to achieve the above object, the invention of the first aspect is an image display processing apparatus of a prompter which is used during broadcasting of a television and displays on a display unit, the original image. And a two-image processing means for performing processing for displaying the image being broadcast and the image being broadcast on the same screen. According to a second aspect of the present invention, in the above-mentioned two image processing means, the amplitude of the image signal being broadcast is entirely lowered, and the image signal of the original is superimposed on the reduced broadcast image signal by superimposing. To do.
A third aspect of the present invention is characterized in that the two-image processing means performs a process of cutting out a part of a screen on which a document is displayed and fitting an image being broadcast into the cutout portion. According to a fourth aspect of the present invention, there is provided a switching processing circuit for switching one of the two images obtained by the two image processing means, the image being broadcast, and the original image to output to the display unit, and three types of these. And a selection operation unit for selecting one of the images.

[0008]

According to the above construction, as the two image processing means,
When the superimpose method is used, the superimpose signal of the character part is formed from the original image signal,
The superimpose signal is, for example, a white signal. On the other hand, the brightness of the image signal being broadcast is reduced by reducing its amplitude, and the superimpose signal is superimposed on the image signal having the decreased brightness. Then, white original characters are displayed on the broadcast image which is lighter and grayer than usual.

It is also possible to use a method of partially embedding (picture-in-picture). In this case, for example, a gate pulse cuts an image signal in a partial area of the original screen, and the broadcast is reduced to this cut area. The image is inset. Then, instead of displaying the originals one by one on the screen, if the originals are scrolled to the left and right to be displayed, the display omission of the originals which was supposed to be displayed in the cut screen area can be prevented.

Further, according to the invention of the fourth aspect, it is possible to appropriately select the display of only the image being broadcast, the display of only the original, or the display of two images, and the type of the broadcast, the situation of the scene, etc. It is possible to obtain an optimum display state according to

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the construction of an image display processing apparatus for a prompter according to the first embodiment, and FIG. 2 shows the overall construction when a prompter apparatus is used. The configuration will be described. In FIG. 2, a document 10 is photographed by a document camera 11, and this image signal (video signal) is supplied to a video selector 12 including a two-image forming circuit, while on the other hand, it is photographed by a television camera 14, for example, news. The image of the caster 15 is also supplied to the video selector 12. The original supplied to the video selector 12 may be stored in a memory or the like. If an image other than the image captured by the television camera 14 is being broadcast, this image is supplied to the video selector 12 from the same input terminal.

A prompter display portion 16 is provided on the front side of the television camera 14 by a mounting member, and a half mirror for reflecting the display image to the newscaster 15 side is provided above the upper display surface of the display portion 16. 17 are arranged. A lighting lamp 18 is arranged on the front side of the prompter display section 16, and the lighting lamp 18 indicates that the image taken by the television camera 14 is being broadcast. Further, the operation unit 20 connected to the video selector 12 is arranged on the desk of the newscaster 15.

As shown in FIG. 1, the operation section 20 has a switch 21 for selecting a document image, a switch 22 for selecting an on-air image, and a switch 23 for selecting two images. Further, the video selector 12 is provided with an original video signal input terminal 24 and an on-air video signal input terminal 25. The input terminal 24 side is provided with a sync separation circuit 26 for separating a synchronization signal from the original video signal and a supermarket. The impose signal generating circuit 27 is connected. The superimpose signal generation circuit 27 can form a character superimpose signal of only the character portion in the original image.

A level shift circuit 28 for reducing the amplitude of the on-air video signal is connected to the input terminal 25, and these output signals are provided downstream of the level shift circuit 28 and the superimpose signal generation circuit 27. A mixing circuit 30 for mixing is provided. This mixing circuit 30
Is connected to a white level setting device 31 for setting a white level signal, and the white level setting device 31 mixes the superimpose signal in white with the on-air video signal. Of course, the color of this superimpose signal may be another color.

Further, the output terminal 3 of the video selector 12
2, a switching circuit 33 that is switched by a control signal of the operation unit 20 is connected.
The original video signal is supplied to the c terminal, the on-air video signal is supplied to the d terminal, and the two image video signals mixed by the mixing circuit 30 are supplied to the e terminal. Then, this switching circuit 33
Selects any one of the above video signals according to the operation of the switches 21, 22, and 23 of the operation unit 20.

The first embodiment is constructed as described above, and its operation will be described below with reference to FIGS. 3 and 4. First, during broadcasting, the newscaster 15 with the TV camera 14 of FIG.
Is displayed, the video signal from the TV camera 14 is supplied to the video selector 12, and when images and recordings of other TV cameras are being broadcast,
The video signal is supplied to the video selector 12.
This video signal is, for example, the signal shown in FIG. In the video selector 12 shown in FIG. 1, the amplitude (level) of the video signal is lowered by the level shift circuit 28.
The signal shown in (B) is obtained, which is a light gray video signal with reduced luminance.

On the other hand, in the document camera 11 of FIG. 2, the document 10 is photographed, and the video signal of the document as shown in FIG. 3C is also supplied to the video selector 12 (this document video signal is , Which may be pre-recorded or stored in a memory or the like). When the original video signal is supplied to the superimpose signal generating circuit 27 of FIG. 1, the superimposing of only the character portion is performed based on the sync signal from the sync separating circuit 26 as shown in FIG. An impose signal is obtained.

Thereafter, the level-shifted on-air video signal and the superimpose signal of only the character portion are supplied to the mixing circuit 30. In this mixing circuit 30, when the superimpose signal is High output, a white level signal is superposed on the on-air video signal from the terminal b side, and the mixing circuit 30 shows the signal as shown in FIG. The video signal of the two image mixture is output.

When the switch 21 is pressed by the operation unit 20, the switching circuit 33 is connected to the terminal c, so that the video signal of the original document is output from the output terminal 32 as shown in FIG.
Is supplied to the prompter display unit 16 of the half mirror 1
Only the original is displayed at 7. Further, when the switch 22 is pressed, the switching circuit 33 switches to the terminal d, so that an on-air video signal is supplied to the display unit 16 and only the on-air image is displayed on the half mirror 17.

Further, when the switch 23 is pressed, the terminal is switched to the terminal e of the switching circuit 33, so that the video signals of two images from the above-mentioned mixing circuit 30 are displayed.
6, and the image shown in FIG. 4 is displayed on the half mirror 17. As shown in the figure, the two images are such that the characters of the white original are clearly displayed on the light grayish image during broadcasting. In this way, two images are displayed on the same display screen, and this two-image display makes it easy to read the original while checking the on-air image, and it is possible to select the original as before. Switch (2,
There is no need to operate 3) frequently.

FIGS. 5 and 6 show the configuration of the second embodiment. In the second embodiment, two images are formed by the picture-in-picture method. That is, the video selector 35 of the second embodiment is provided with an image synthesizing circuit 36 and a gate pulse generating circuit 37 for synthesizing picture-in-picture images. The original video signal and the on-air video signal input from the input terminals 24 and 25 are supplied to the image synthesizing circuit 36, and the original video signal is supplied to the gate pulse generating circuit 37.

According to the structure of the second embodiment, the gate pulse generating circuit 37 cuts out the area F at the lower left side of the document screen shown in FIG. 6 from the synchronizing signal separated from the document video signal. Is formed, and this gate pulse is supplied to the image synthesizing circuit 36. In the image synthesizing circuit 36, the area F shown in FIG. 6 is cut out by the gate pulse, and the on-air reduced image formed from the on-air video signal is fitted into the area F to form two pictures in picture. Then, similarly to the first embodiment, the operation unit 2 of FIG.
The control signal from 0 is supplied to the switching circuit 33,
When the switch 23 is pressed to switch to the terminal e, the two images combined by the image combining circuit 36 are displayed on the half mirror 17 as shown in FIG.

Further, in the second embodiment, the characters on the original are scrolled in the right direction 50. That is, the character string can be scrolled by photographing the document 10 of FIG. 2 by the document camera 11 while moving the document 10 to the left and right by a feeding device or the like. According to this, a character string hidden by the area F can be read by a newscaster or the like by scrolling to the right.

In the second embodiment, the on-air image is set in the screen displaying the original, but the original image may be set in the screen displaying the entire on-air image.

[0025]

As described above, according to the present invention,
In a prompter image display processing apparatus for displaying a document, the document image and the image being broadcast are displayed on the same screen by, for example, two image processing means using a superimpose method or a picture-in-picture method. As described above, the newscaster or the like can easily read the document while viewing the on-air image without frequently switching the image between the document and the on-air image.

The invention according to claim 4 is a two-image,
Since either the image being broadcast or the original image can be selectively displayed on the display unit, the optimum display state can be obtained according to the type of broadcast, the situation of the scene, etc. It is possible to select an operation method that suits the individuality and obtain a device that is easy to use.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing a configuration of an image display processing device of a prompter according to a first exemplary embodiment of the present invention.

FIG. 2 is a diagram showing an overall configuration when the prompter device of the first embodiment is applied to a television camera.

FIG. 3 is a waveform diagram showing a dual image forming operation in the video selector of the first embodiment.

FIG. 4 is a diagram showing a display state of two images on the prompter display unit of the first embodiment.

FIG. 5 is a diagram showing a configuration of a video selector of a second embodiment.

FIG. 6 is a diagram showing a display state of two images on a prompter display unit of the second embodiment.

FIG. 7 is a diagram showing a configuration of a conventional image display processing device of a prompter.

[Explanation of symbols]

 1, 20 ... Operation part, 2, 3, 21, 22, 23 ... Switch, 4, 12, 35 ... Video selector, 16 ... Prompter display part, 17 ... Half mirror, 26 ... Sync separation circuit, 27 ... Superimpose Signal generating circuit, 28 ... Level shift circuit, 30 ... Mixing circuit, 33 ... Switching circuit, 36 ... Image combining circuit, 37 ... Gate pulse generating circuit.

Claims (4)

[Claims] 1. An image display processing device for a prompter used during television broadcasting to display an original on a display unit, which performs processing for displaying the original image and the image being broadcast on the same screen. (2) An image display processing device for a prompter, which is provided with an image processing means. 2. The first and second image processing means is characterized in that the amplitude of the image signal being broadcast is lowered overall, and the image signal of the original is superimposed on the reduced broadcast image signal by superimposing. An image display processing device for a prompter according to claim 10. 3. The prompter according to claim 1, wherein the two-image processing means cuts out a part of a screen on which an original is displayed, and fits a broadcast image into the cut-out portion. Image display processing device. 4. A switching processing circuit for switching and outputting any one of the two images obtained by the two-image processing means, the image being broadcast, and the original image to a display unit, and these switching circuits.
A selection operation unit for selecting one of the types of images,
The image display processing device of the prompter according to claim 1, further comprising: