JPS63185173A - Television receiver - Google Patents

Abstract

PURPOSE:To detect captions in upper and lower blanks in the picture of a film size by providing a display different from the aspect ratio a current standard television and providing a blank detecting circuit, a caption detecting circuit and a caption end synthesizing circuit. CONSTITUTION:When a video input signal has a signal having the upper and the lower blanks such as the film size, this blank is detected in the blank detecting circuit 17, and whether there is the caption in the blank or not is detected by the caption detecting circuit 18. Then, by the caption synthesizing circuit 19, a signal synthesized on a video signal and extended horizontally is switched to a switching circuit 14 with the output of the blank detecting circuit 17 and projected on the display. At this time, a vertical amplitude is extended so as to have the essential aspect ratio of 16:9 or 5:3 in a vertical amplitude circuit 15.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a television receiving apparatus using a horizontally long wide display.

Conventional Technology In recent years, televisions have been required to offer new appeals such as the power and presence of images and audio through larger screens and higher quality. FIG. 3 shows a schematic configuration of the current standard television device. A current standard television signal is input to an input terminal 31, the signal is processed by a current standard television signal processing device 32, and an image is reproduced on a display 33.

Additionally, in order to increase the impact and sense of presence, a horizontally long, movie-sized, wide-screen image is created, with no image information at the top and bottom of the screen (with blanks at the top and bottom).

In addition, the high-definition television images proposed by the Japan Broadcasting Corporation (NHK) are made into horizontally wide screens to increase the power and sense of presence, so in the future, it will be possible to convert high-definition television images into standard television signals. Images that are converted into horizontal widescreen images will also be horizontally long, and a wide variety of such horizontally wide images will be provided.

Therefore, we are proposing a display with a horizontally long wide screen whose screen aspect ratio is different from the 4:3 of a standard television (for example, 16=9, which is the same aspect ratio as a high-definition television). FIG. 4 shows an outline of this wide display.

A current standard television signal is input to the input terminal 41, and signal processing is performed by the current standard television signal processing device 42. If the input signal is a movie size signal, the input signal is directly input to the switching circuit 44. In the case of a signal from a standard television screen, the aspect ratio is different as shown in Figure 6, resulting in an image that is stretched horizontally, or as shown in Figure 5, where the upper and lower images are missing. Diagram C
The horizontal time compression circuit 43 compresses the image in the horizontal direction, converts it into an image with the original aspect ratio (4:3), and inputs it to the aforementioned switching circuit 44. Next, the switching circuit 44 switches between the two types of signals mentioned above, and when the image is a movie-sized image as shown in FIG. 6a, the vertical amplitude control circuit 46 changes the vertical amplitude as shown in FIG. is expanded, converted to its original aspect ratio (for example, 18:9), and displayed on the display 46. In addition, in the case of a standard current television screen, the image is displayed as is.

Problems to be Solved by the Invention However, with the above method, when subtitles are inserted in the blank space at the top and bottom of a movie-sized image as shown in Figure 6a, the text may become invisible. It had the problem of being wet.

In view of the above-mentioned problems, the present invention is designed to input a movie-sized screen and, if there are subtitles in the blank areas above and below, to synthesize them on top of the movie image.

Means for Solving the Problems In order to solve the above problems, the television receiving device of the present invention has a display with an aspect ratio different from that of the current standard television, and has a blank detection circuit 1 a subtitle detection circuit 1 The present invention is characterized in that it is equipped with a compositing circuit, detects subtitles in the upper and lower blank areas of a movie-sized image, and is configured to synthesize and display the subtitles.

According to the above-described structure, the present invention detects whether there is a subtitle in the blank area in the case of a movie-sized image with blanks at the top and bottom, and if there is a subtitle, synthesizes it on top of the video information. Then, the vertical amplitude is expanded and the image is projected to fill the entire screen. This allows you to watch images with a powerful and realistic feel, even if there are subtitles in the blank area, without them becoming invisible.

Embodiments Below, television apparatuses according to embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a configuration diagram of a television apparatus in an embodiment of the present invention. In FIG. 1, 11 is a video input terminal, 12 is a current signal processing device, 13 is a horizontal time compression circuit, 14 is a switching circuit, 16 is a vertical amplitude control, 16 is a display, 17 is a 7 ranking detection circuit, and 18 is a subtitle. The detection circuit 19 is a subtitle synthesis circuit.

FIG. 2 is a diagram showing the screen of the display.

The operation of the television receiving apparatus configured as described above will be explained below with reference to FIGS. 1 and 2.

A television signal is input to the video input terminal 11,
The current television signal processing device 12 performs conversion, synchronization separation, etc. of the luminance and nine color difference signals. Next, if the video input signal is a current standard television signal with an aspect ratio of 4:3, if it is displayed as it is on the display 16, as in the conventional case, the image will be extended in the horizontal direction as shown in FIG. 5a. Therefore, the image is compressed in the horizontal direction by a horizontal time compression circuit 13 using a line memory or the like, and an image with an original aspect ratio of 4:3 is displayed on the display 16 as shown in FIG. 6C. Next, if the video input signal is a signal as shown in FIG. The subtitle detection circuit 18 detects whether there is a subtitle as shown in FIG. 2 a in the blank, and the subtitle synthesis circuit 1
9, the switching circuit 14 synthesizes the signal on top of the video signal and outputs the horizontally extended signal using the output of the blank detection circuit 17.
The image will be displayed on the display as shown in Figure 2.

At this time, the vertical amplitude circuit 16 adjusts the original aspect ratio (16
:9 or 6:3).

As described above, according to this embodiment, by providing the television device with the horizontally long wide display 16 and providing the blank detection circuit 171, subtitle detection circuit 182, and subtitle synthesis circuit 19, the television device can display upper and lower blanks. When projecting a movie-sized video that you have, if there are subtitles in the blank areas, they will be composited into the part of the video, the blank parts will be deleted,
Utilize the screen effectively by projecting the image to fill the entire screen.

It can increase the sense of realism and the impact.

Effects of the Invention As described above, according to the present invention, when a movie-sized image with blanks at the top and bottom of the screen is displayed on a television receiving device, if there are subtitles in the blank area, the screen will be displayed in the same part of the image. By combining images, removing blank areas, and projecting the image to fill the entire screen, the screen of the television receiver can be used effectively, increasing the sense of presence and impact.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a television receiving device according to an embodiment of the present invention, FIG. 2 is a front view showing the display state of the same device, FIG. 3 is a block diagram of a conventional television receiving device, and FIG. The figure is a block diagram of a television receiver having a wide display, and FIGS. 6 and 6 are front views showing the display state of the apparatus. 11... Input terminal, 12... Current standard television signal processing device, 13... Horizontal time compression circuit, 14... Switching circuit, 16... ...
・Vertical amplitude control circuit, 16...display,
17...Blank detection circuit, 18...
Subtitle detection circuit, 19...Subtitle synthesis circuit. Name of agent Patent attorney Toshio Nakao and 1 other person ``4 Figure 2 (f) <b) Figure 3 Figure 5 Figure 6 Exit ``~sa■\ (b)

Claims (1)

[Claims] A first signal blank having a horizontally long wide display in which the aspect ratio of the reproduced image is different from that of the current standard television signal, the aspect ratio of the horizontally long display and the reproduced image matching, and having blanks at the top and bottom. a blank detection circuit that detects the blank subtitle, a subtitle detection circuit that detects the blank subtitle, a subtitle synthesis circuit that synthesizes the detected subtitle with a certain part of the video of the first signal, and a vertical amplitude A television receiving device comprising a vertical amplitude control circuit for expanding a second signal, which is a current standard television signal, compresses the horizontal time of the second signal, and displays it by switching with the output of a subtitle synthesis circuit for the first signal. .