JPH0824355B2 - Television receiver - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver using a horizontally wide display.

2. Description of the Related Art In recent years, televisions are required to have new attractiveness such as power and realism due to large screen and high quality of both video and audio. FIG. 3 shows a schematic configuration of a current standard television device. A current standard television signal is input to the input terminal 31, signal processing is performed by the current standard television signal processing device 32, and an image is reproduced on the display 33.

In addition, in order to increase the power and realism, a wide screen image of a horizontally long movie size is created in which there is no image information above and below the screen (with upper and lower blanks). In addition, the image of high-definition television proposed by the Japan Broadcasting Corporation (NHK) is also changed to a wide wide screen in order to increase the power and presence. The image to be converted into is also a landscape wide screen, and such a landscape wide image will be provided in abundance.

Therefore, we are proposing a display with a horizontally wide screen whose aspect ratio is different from standard television 4: 3 (for example, 16: 9, which has the same aspect ratio as high definition television).

 An outline of this wide display is shown in FIG.

The current standard television signal is input to the input terminal 41, signal processing is performed by the current standard television signal processing device 42, and if the input signal is a movie size signal, it is directly input to the switching circuit 44 and the input signal is current. In the case of a signal on a standard television screen, the image has a different aspect ratio as shown in FIG. 5a and thus becomes an image that extends in the horizontal direction or an image in which upper and lower images are missing as shown in FIG. 5b. As shown in c, the horizontal time compression circuit 43 compresses the horizontal direction to convert it into an image of the original aspect ratio (4: 3), and the above-mentioned switching circuit 4
Entered in 4. Next, the switching circuit 44 switches the above-mentioned two kinds of signals, and when the image has a movie size as shown in FIG. 6a, the vertical amplitude control circuit 45 expands the vertical amplitude as shown in FIG. 6b. Then, it is converted to the original aspect ratio (for example, 16: 9) and displayed on the display 46. In the case of a standard current television screen, it is displayed on the display as it is.

Problems to be Solved by the Invention However, in the method as described above, in a movie size image as shown in FIG. 6a, when subtitles are inserted in blank spaces above and below, characters may not be visible. There was a problem that it was possible.

In view of the above problems, the present invention is designed so that if a movie-sized screen is input and there are subtitles in the upper and lower blanks, they are combined on the movie image.

Means for Solving the Problems In order to solve the above problems, the television receiving apparatus of the present invention has a display different from the aspect ratio of the current standard television, and has a blank detection circuit, a caption detection circuit, and a caption non-synthesis. It is characterized by including a circuit, and detecting subtitles at the upper and lower blanks in a movie size image, and composing and displaying them.

Operation According to the present invention, in the case of a movie-size image having blanks at the top and bottom, the present invention detects whether there is a subtitle in the blanks, and if there is, subtitles are combined with the video information.
Then, the vertical amplitude is extended to display the image on the full screen.
This makes it possible to view a powerful and realistic image without disappearing even if there are subtitles in the blank area.

Embodiment A television apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a television device according to 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, 15 is vertical amplitude control, 16 is a display, 17 is a blanking detection circuit, and 18 is caption. Detection circuit, 19
Is a subtitle synthesis circuit.

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

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

A television signal is input from the video input terminal 11,
The current television signal processing device 12 performs conversion of luminance and color difference signals, synchronization separation, and the like. Next, when the video input signal is a current standard television signal having an aspect ratio of 4: 3, it is displayed on the display 16 as it is as in the conventional case, and an image horizontally extended as shown in FIG. Therefore, the horizontal time compression circuit 13 using a line memory or the like compresses the horizontal direction, and an image with an original aspect ratio of 4: 3 is displayed in FIG.
The image is displayed on the display 16 like. Next, when the video input signal is a signal as shown in FIG. 6a having upper and lower blanks such as a movie size, this blank is used as a blank detection circuit.
When a blank is detected in step 17, the subtitle detection circuit 18 further detects whether or not there is a subtitle as shown in FIG. 2a in the blank, and the subtitle synthesis circuit 19 synthesizes it on the video signal. Then, the output signal of the blank detection circuit 17 is used to switch the switching circuit 14 to output the signal which has been extended in the horizontal direction, and is displayed on the display as shown in FIG. 2b. At this time, the vertical amplitude circuit 15 extends the vertical amplitude so that the original aspect ratio (16: 9 or 5: 3) is obtained.

As described above, according to the present embodiment, the television device,
By having a horizontally long wide display 16 and providing a blank detection circuit 17, a caption detection circuit 18, and a caption synthesis circuit 19, when displaying a movie size image having a vertical blank on a television device, it is displayed at the blank position. If there is subtitles, it will be combined with the part with the video, the blank part will be deleted, and the video will be projected to the full screen, so the screen will be used effectively and the presence will be increased.
You can increase the power.

EFFECTS OF THE INVENTION As described above, according to the present invention, when a movie size image having blanks at the top and bottom of the screen is projected on the television receiving device, if there are subtitles at the blanks, the portion where the video is present is displayed. Since they are combined, the blank part is deleted, and the image is displayed on the full screen, it is possible to effectively use the screen of the television receiver and increase the presence and power.

[Brief description of drawings]

FIG. 1 is a block diagram of a television receiving apparatus according to an embodiment of the present invention, FIG. 2 is a front view showing a display state of the apparatus, FIG. 3 is a block diagram of a conventional television receiving apparatus, and FIG. FIG. 5 is a block diagram of a television receiver having a wide display, and FIGS. 5 and 6 are front views showing a display state of the same. 11 ... Input terminal, 12 ... Current standard television signal processing device, 13 ... Horizontal time compression circuit, 14 ... Switching circuit, 15 ...
... vertical amplitude control circuit, 16 ... display, 17 ... blank detection circuit, 18 ... caption detection circuit, 19 ... caption synthesis circuit.

Claims (1)

[Claims] 1. A horizontally wide display having an aspect ratio of a reproduced image different from the aspect ratio of a current standard television signal is provided, and the aspect ratio of the horizontally elongated display and the reproduced image match, and blanks are provided at the top and bottom. A blank detection circuit that detects a blank of the first signal, a caption detection circuit that detects the blank caption, a caption combining circuit that combines the detected caption with a portion of the video of the first signal, and an aspect ratio of the display. A vertical amplitude control circuit for expanding the vertical amplitude in accordance with the above, to compress the horizontal time of the second signal, which is the current standard television signal, and switch it to the output of the caption synthesis circuit of the first signal for projection. Television receiver.