JPS63146671A - Television receiver - Google Patents

Abstract

PURPOSE:To effectively utilize the entire display part by retarding a vertical synchronizing signal in displaying a laterally long picture and moving the long picture in a vertical direction of the display part and collecting the remaining part of the display part to the upper or the lower part only and displaying a slave pattern to the part. CONSTITUTION:With switches 8, 13 through respectively to the positions A, C, the existing standard television signal (a) inputted to an input terminal 1 is supplied to a signal processing circuit 9 and a synchronizing signal generating circuit 11. The circuit 11 generates a horizontal synchronizing signal and a vertical synchronizing signal (b) to drive a display device 10 and inputs them to the display device 10. In this case, the middle part of the reproduced picture of the existing standard television signal is displayed to be the same as the middle part of the display part of the display device 10. When the switch 8 is thrown to the position B and the long picture from a VTR or the like is inputted through an input terminal 2 and a synthesis circuit 7, with the switch 13 thrown to the position D, a vertical synchronizing signal (e) being the result of retarding the output of the synchronizing signal generating circuit 11 by a delay circuit 12 by DELTAt as the vertical synchronizing signal is used and then the long reproduced picture is moved upward. Thus, since the remaining part is caused only at the lower part of the display part of the display device 10, the picture inputted from input terminals 3-6 is displayed to the part as a slave pattern.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a television receiver that can display a plurality of images simultaneously.

BACKGROUND OF THE INVENTION In recent years, demand for package media such as VTRs and video discs has increased in the video field, and the number of television receivers compatible with these video signals has increased rapidly.

Furthermore, although some of the video signals recorded on VTRs and video discs are for educational and musical purposes, an even larger proportion of the video signals are recorded movies, and the demand for them is also large. There is.

Video signals with the content of these movies often have a horizontally elongated aspect ratio of the reproduced image compared to current television signals, so when displayed on a general current television receiver,
The upper and lower parts of the display area are images with no video information.

A conventional television receiver will be described below with reference to the drawings.

FIG. 5 shows a screen on which a horizontally long movie image from a VTR, video disc, etc. is projected on a conventional television receiver. 21 is a display portion, 22 is a horizontally long image portion that is actually displayed, and a diagonally shaded portion 23 is a portion without video information. The aspect ratio of the display section of current television receivers is 3:4 (o,
7s:1)-i, as shown by the bold line 21 in FIG. 6, consider displaying a horizontally long image within this display section. Of the things recorded on VTRs, video discs, etc., the aspect ratio of the playback image for movies, which are mainly movies, is often different from the aspect ratio of the current standard television signal; 9:16 (
0.56:1).

Moreover, when the image is displayed on the display section 21, the center of the display section and the center of the reproduced image often almost coincide;
As shown by the hatched area 23 in FIG. 6, there is no video information in the upper and lower parts of the interior of the display portion 21.

On the other hand, with the diversification of information in recent years, for example, when viewing television images, it is necessary to use alternate programs and VTRs.

There is also an increasing demand for partially displaying other images such as multiplexed characters, and there is an increasing demand for television receivers with a so-called small screen display function.

FIG. 6 shows an example of a conventional television receiver having a small screen display function, and is a screen on which a small screen image is displayed when the horizontally long image described in FIG. 5 is played back. In this case, information from the child screen 24 can be obtained while viewing the horizontally long image 22 that is the main screen.

Problems to be Solved by the Invention However, in the above display method, when displaying a child screen, a part of the horizontally long image that is the main screen may be It's missing,
There was a problem in that the entire display area was not effectively utilized.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a television receiver that can effectively utilize a display screen.

Means for Solving the Problems In order to achieve this object, the television receiver of the present invention delays the vertical synchronization signal when displaying a horizontally long image and moves the horizontally long image in the vertical direction of the display area. In this way, the remaining portion of the display area, which had been scattered at two locations above and below, is concentrated only in the upper or lower portion, and a sub-screen is displayed in that portion.

Effect: With this display, when displaying a sub-screen image while viewing a horizontally long image, it is possible to display a plurality of images without losing information on both images.

EXAMPLE An example of the present invention will be described below with reference to the drawings.

FIG. 1 is a configuration diagram of one embodiment of the present invention (τ), FIG. 2 is a timing diagram of various signals, FIGS. 3 and 4 are screen display diagrams, and 1 is an input terminal for the current standard television signal. ,2
is an input terminal for horizontally long image signals such as movies, etc.; 3 to 6 are input terminals for image signals for child screens; and 7 is a signal processing of the image signals input to input terminals 3 to 6 to form a child screen; 8 is a switch; 9 is a signal processing circuit for supplying the image signal to the display; 1;
o is a display, 11 is a synchronization signal generation circuit that outputs horizontal and vertical synchronization signals, 12 is a delay circuit that delays the vertical synchronization signal, and 13 is a switch.

Regarding the television receiver configured as above,
The operation will be explained below.

First, consider the case where the switches 8 and 13 are on the A and C sides, respectively. A current standard television signal (FIG. 2a) inputted to the input terminal 1 is connected to a signal processing circuit 9 and also to a synchronizing signal generation circuit 11. A synchronizing signal generating circuit 11 generates a horizontal synchronizing signal and a vertical synchronizing signal (FIG. 2b) for driving the display 1o. Since the switch 13 is connected to the C side, the horizontal synchronizing signal and vertical synchronizing signal are the output signals of the synchronizing signal generating circuit 11, and these are input to the display 10. At this time, the center of the reproduced image of the current standard television signal is displayed so as to be the same as the center of the display portion of the display 10.

Next, consider a case where the switch 8 is connected to the mouth side and a horizontally long image (FIG. 2C) from a VTR, video disk, etc. is inputted through the input terminal 2 and the composition circuit 7. Note that for the sake of simplicity, it is assumed that there are no input signals to the input terminals 3 to 6. The horizontally long image signal is connected to the display 1o through the signal processing circuit 9, and is also connected to the synchronization signal generation circuit 11, which outputs a horizontal synchronization signal and a vertical synchronization signal. If the switch 13 is on the C side, the vertical synchronizing signal given to the display 10 is not as shown in d of Fig. 2, and the horizontally long image reproduced on the display 10 becomes the screen shown in Fig. 6 explained in the conventional example. However, when the switch 13 is connected to the second side, the synchronization signal generation circuit 1 is used as a vertical synchronization signal.
By using a vertical synchronizing signal (e in FIG. 2) obtained by delaying the output d in FIG. 2 by Δt by the delay circuit 12, the horizontally long reproduced image can be moved upward.

Therefore, a residual portion is generated only in the lower part of the display portion of the display 10, and the images inputted from the input terminals 3 to 6 are displayed there as a sub-screen.

The screen displayed using the above method will be explained using FIG. 3.

21 is a display part, 22 is a projection part of a horizontally long image, 25-2
8 is a sub-screen image different in content from the horizontally long image 22.

Since the aspect ratio of the display portion 21 is the same as that of the reproduced image of the current standard television signal, 3=4, that is, 0.7.
The ratio is 5:1. In this display area, the aspect ratio of the playback image is 9:
16, that is, a horizontally long video signal 22 having a ratio of 0.56:1. At this time, the upper end of the horizontally long image 22 is displayed to match the upper end of the display portion 21, or the lower end of the image 22 is projected to match the lower end of the display portion 21.

FIG. 3 shows a screen using the former display method.

In this case, the lower part of the display part 21 has an aspect ratio of 0.19:1.
Since there is a portion where there is no information, it is possible to display an image with different information content from the image 22 here.

For example, in FIG. 3, images with an aspect ratio of 3=4 (0.19:0.25) can be displayed on four screens, as shown by sub-screens 25 to 28. Further, as shown in FIG. 4, three sub-screens may be displayed, and a black blanking portion or an optional color screen (32 to 36) may be provided between the sub-screens.

In addition, in FIGS. 3 and 4, the horizontally long image 22 is displayed in the display area 2.
However, conversely, one or more sub-screens may be arranged and displayed at the top of the display section 21 so as to touch the bottom end of the display section 21.

Further, as the contents of the sub-screen, images of general television broadcasts, characters and graphics, VTRs, video discs, etc. may also be displayed.

Effects of the Invention As described above, according to the present invention, when a horizontally long image such as a movie is displayed on a current standard television receiver, multiple sub-screens can be displayed without losing the information of the image. The practical effects are extremely impressive.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the configuration of a television receiver in an embodiment of the present invention, Fig. 2 is a signal waveform diagram of each part thereof, and Figs. 3 and 4 are projections of a display screen in the same embodiment. Figure 6 is a front view showing the state of the screen, and Figure 6 is a front view of a conventional screen that displays a horizontally long image on a current standard television receiver.
The figure is a front view of a conventional screen displaying a child screen. 1-6...Input terminal, 7...Composition circuit, 8, 13...Switch, 9...Signal processing circuit, 10...・Display, 11...
... Synchronization signal generation circuit, 12 ... Delay circuit,
21...display area, 22...horizontally long playback image, 23.32-36...portion without image information, 24-31...subscreen. Name of agent: Patent attorney Toshio Nakao and 1 other person
2 Figure 3

Claims (1)

[Claims] The first signal, which is a standard television signal, and the second signal, the reproduced image of which has a different aspect ratio from the first signal, are adjusted to fit the width of the display that matches the aspect ratio of the reproduced image of the first signal. The information of the first signal and the second signal is switched and displayed without any loss of information, and when the second signal is displayed, the remaining part of the display section of the display displays content different from the second signal. A television receiver that displays images.