JPH01221067A - Picture display device - Google Patents

Abstract

PURPOSE:To attain simultaneously monitoring of both pictures by combining plural optional pictures having 1st and 2nd aspect ratios and displaying the result on a display means having a 2nd aspect ratio. CONSTITUTION:A signal from a memory/system control circuit 41 is fed to channel selection devices 4, 5, 24, 25 and memories 10-13, 30-33 are controlled respectively by a signal from the circuit 41 to apply write/readout of the signal supplied respectively. Then the signal from the memory 42 is fed to a switch 43 and a signal from a demodulation double speed circuit 8 and a demodulation circuit 28 is fed to the switch 43 and supplied to a display device 45. Then the picture formed in the memory 42 is displayed on the display device 45 and when the switch 43 is switched to the upper position, the television picture is the NTSC system converted into double speed is displayed. When the switch 43 is switched to the lower position, the television picture of the High Vision system is displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image display device having a display gray means for so-called high vision.

[Summary of the invention]

The present invention relates to an image display device having a second aspect ratio t-
By displaying an arbitrary combination of a plurality of images a having 7 swift ratios of first and fs2 on the display means, both images can be monitored simultaneously.

[Conventional technology]

For example, an NTSC television image has 52 scanning lines.
There are 5 lines, and the aspect ratio is 3:4. On the other hand, a high-definition television image has 1125 scanning lines and an aspect ratio of 9:16.

For example, in an NTSC television image,
For example, the screen is divided vertically and horizontally into three equal parts, and each of the nine divisions is displayed in combination with a reduced television.

Therefore, in a display means that shows a high-definition television image with an aspect ratio of 9:16, as shown in FIG.
In addition to displaying NTSC television images,
It has been proposed to divide the remaining portion into three equal parts and display the reduced NTSC television images in combination in each division.9.

According to this, the aspect ratio of each section is all 3:4, and each television image can be displayed satisfactorily without any deletions.

[Problem to be solved by the invention]

However, in any case, the devices described in the prior art combine and display only television images of the same aspect ratio in the NTSC system. TV images are never displayed at the same time,
Therefore, monitoring both images at the same time is a must! There wasn't.

This application was filed in view of these points.

[Means to solve the problem]

The present invention provides a method for arbitrarily combining a plurality of television images (tuner (2) (3)) having a first aspect ratio and a plurality of television images (tuner hat (2)) having a second aspect ratio (memory (2)). ), the image is displayed on a display gray means (display device) having the second aspect ratio.

[Effect]

According to this, since a plurality of television images having the first aspect ratio and a plurality of television images having the second aspect ratio are arbitrarily combined and displayed, television images of different formats are not displayed at the same time. , these can be monitored simultaneously.

〔Example〕

In FIG. 1, a signal received by an antenna (1) is supplied to, for example, NTSC tuners (2) and (3), and a desired broadcast wave is selected by signals from tuning devices (4) and (5), respectively. is extracted. These broadcast waves are detected by detection circuits (6) and (7), respectively, and these detected signals are demodulated by demodulation polarization circuits (8) and (9), respectively. It is converted at double speed so that Of these double-speed converted signals, the signal from the circuit (8) is supplied to the memory 4 of all 1050 scanning lines, and the signal from the circuit (9) is supplied to the memory H of 1050 scanning lines each. (2) (to) are each thinned out to 1 and supplied.

Further, the signal received by the antenna Q is supplied to, for example, a high-definition tuner (2) and (2), and a desired broadcast wave is extracted by the signal from the channel selection device (2) and (2), respectively. ξThese broadcast waves are detected by detection circuits ) and (b), respectively, and these detected signals are demodulated by demodulation circuits wr (c) and 4, respectively. Among these demodulated signals, the signals from one circuit) are supplied to the memory (7) of all 1125 fixed lines.

Mo! J (11) as (to), each is thinned out to 1 and supplied.

In addition, the signal from the memory/system control circuit @Chin is supplied to the channel selection device (4) (5) (c)), and the signal from the circuit (2) is supplied to the memory (to) to (2).
) to (to) are controlled respectively, and the respective supplied signals are written/read. Here, from the circuit,
For example, the signal that switches every l frame is the channel selection device (5).
At the same time, in synchronization with this switching, different broadcast wave signals are supplied to memories 0~ (by controlling the writing of Lion-μs, to memories α~0301~), for example, 3 different broadcast wave signals. Updated and written every frame.

The signals from these memories (g) to oaoci- (to) are supplied to the memories of all 1125 scan lines. Also, the memory (to the memory) is controlled by a signal from the circuit to perform convolution/reading of the supplied signal. By this, memory αQ and (to) ~
An image as shown in FIG. 2A can also be obtained by combining the signals of (to).

The signal from the memory) is supplied to the switch, the signals from the demodulation double speed circuit (8) and the demodulation circuit (to) are supplied to the switch, and the signal from this switch is displayed through the video amplifier F14. The information is supplied to a display unit as means. Also, the control circuit @η
A signal from the display device tH is supplied to the deflection circuit 1'1) of the display device tH through the deflection switching circuit 1'1).

As a result, when the switch is switched to the position shown in the figure, the image formed on the memory (6) mentioned above is displayed on the display device, and when the switch ring is switched upward, for example, as shown in FIG. NTSC converted to double speed as shown in
When the 1fc switch is switched downward, a high-definition television image is displayed. When displaying high-definition television images, the horizontal scanning ifM is set to 112.
Switching of the five deflections is performed from the circuit @Aza to the deflection circuit @η.

Further, switching of these displays, etc. is performed by commands from a key connected to the control circuit (rjt).

In this way, according to the above-mentioned apparatus, a plurality of television images having the first aspect ratio and a plurality of television images having the second aspect ratio are arbitrarily combined and displayed, so that television images of different formats can be displayed. They are displayed simultaneously and can be monitored and viewed at the same time.

Furthermore, in the above-described apparatus, by increasing the number of memories, it is also possible to form an image as shown in FIG. 4, for example.

Furthermore, as shown in FIG. 5, the above-mentioned apparatus can also be implemented by using signals from an NTSC system VTR 4 and 1 vision 7 system VTR fi 64 in place of the tuner.

〔Effect of the invention〕

According to this invention, since a plurality of television images having a first aspect ratio and a plurality of television images having a second aspect ratio are displayed in arbitrary combination, television images of different formats can be displayed simultaneously. and monitor these at the same time.

Now you can do it.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an example of the present invention, FIGS. 2 to 5 are diagrams for explaining the same, and FIG. 6 is a diagram for explaining a conventional technique. (2)<3) (2) @ is a tuner, @ is a memory, and bright is a display device. 1 to 1 [4￥11tsui uni 2 ko 1 fig. i visibility fig. 2 fig. 3

Claims (1)

[Scope of Claims] A plurality of television images having a first aspect ratio and a plurality of television images having a second aspect ratio are arbitrarily combined and displayed on the display means having the second aspect ratio. image display device.