JPH07143419A - Wide television receiver - Google Patents

Abstract

PURPOSE:To improve the operability of aspect conversion in a wide television receiver. CONSTITUTION:An automatic aspect ratio conversion instruction button is provided to a remote control transmitter 6, and when the button is depressed, a remote control reception circuit 5 and a remote control analysis microcomputer 4 discriminate it to activate a picture analysis circuit 1. The picture analysis circuit 1 analyzes an incoming video signal to detect a masked part or the like and the result of analysis inputted to the aspect ratio conversion circuit 2. The aspect ratio conversion circuit 2 converts the aspect ratio of a video image displayed on a cathode ray tube 3 according to an instruction of the picture analysis circuit 1.

Description

Detailed Description of the Invention

[0001]

The present invention has an aspect ratio of 16: 9.
The present invention relates to a wide television receiver having a wide aspect display screen, and more particularly to a wide television receiver having improved operability of aspect conversion.

[0002]

2. Description of the Related Art Recently, a wide television receiver (hereinafter referred to as a wide TV) equipped with a wide aspect display screen having an aspect ratio of 16: 9 has appeared, and as shown in FIG. Various sources such as a Vista source having an aspect ratio of 4: 3 but having a non-image portion (mask portion) in the upper and lower portions and a different aspect in which an image exists (vertical size) are supplied. Came.

A video source as shown in FIG.
When it is displayed as it is, the image becomes a horizontally stretched image as shown in FIG. 5A, but if the viewer manually sets the aspect conversion, as shown in FIG. 5B, the vertical center portion where the image exists. The image in the range of the aspect ratio of 16: 9 is enlarged, and it is possible to display by making full use of the wide aspect image display unit. As described above, the wide TV is provided with the aspect conversion circuit so as to convert the aspect of the image according to the taste of the viewer.

Aspect ratio 4: 3 in wide TV
There are various modes when displaying the video signal of, for example, a mode in which a video signal having an aspect ratio of 4: 3 is time-axis compressed (or horizontal deflection width is compressed) (FIG. 6).
(A) See the left side of the arrow).
No. 71 proposed in No. 71, a non-linear mode for enlarging only the left and right edges in the horizontal direction in a video signal with an aspect ratio of 4: 3 (see FIG. 6A), and a central portion in the vertical direction in a video signal with an aspect ratio of 4: 3 A mode in which the aspect ratio of 16: 9 is enlarged and displayed (see FIG. 6B), and the aspect ratio 16: 9 at the central portion in the vertical direction in the aspect ratio 4: 3 image signal is enlarged and the lower part of the image is displayed. There is a mode (see FIG. 6C) in which the lower end is vertically compressed and displayed in order to put the subtitles existing in the non-image part in the screen.

In a conventional wide TV, if there are, for example, four modes for displaying a video signal having an aspect ratio of 4: 3, the remote control transmitter has P1 to P1 corresponding to those modes as shown in FIG. P4 is provided with four aspect specification buttons, and each time the video source is switched, the viewer determines which mode is suitable for the video and presses the aspect specification button that corresponds to that mode. It was converting. Further, since the upper and lower mask widths are not necessarily constant, the viewer manually sets the vertical position of the image as necessary.

[0006]

As described above, in the conventional wide TV, the viewer manually performs mode conversion and adjustment of vertical position and vertical amplitude according to the image each time the image source is switched. However, there is a problem in that a so-called aspect conversion, which makes the display mode on the display screen different, must be operated, and an extremely complicated operation is required. Furthermore, there is a possibility that the number of modes for displaying a video signal with an aspect ratio of 4: 3 will increase in the future. In that case, the remote control transmitter must be provided with an aspect specification button corresponding to that mode. However, there was a problem that the usability became poor.

The present invention has been made in view of the above problems, and an object thereof is to improve the operability of aspect conversion in a wide television receiver having a wide aspect display screen with an aspect ratio of 16: 9. And

[0008]

In order to solve the above-mentioned problems of the prior art, the present invention provides a wide aspect display screen having an aspect ratio of 16: 9, and an image analysis circuit for analyzing an incoming video signal. A wide television receiver including an aspect conversion circuit that makes the display mode of the incoming video signal different on the display screen,
The remote control transmitter or the receiver main body is provided with an automatic aspect conversion instruction button, and a determination means for determining whether or not the instruction by the automatic aspect conversion instruction button is provided, and when the instruction by the automatic aspect conversion instruction button is made, The image analysis circuit is operated to analyze the incoming video signal, the analysis result is input to the aspect conversion circuit to convert the aspect of the video displayed on the display screen, and the automatic aspect conversion instruction button When a plurality of instructions are given, the wide-screen television receiver is characterized in that the display mode on the display screen is sequentially changed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A wide television receiver of the present invention will be described below with reference to the accompanying drawings. 1 is a block diagram showing an embodiment of a wide television receiver of the present invention, FIG. 2 is a diagram showing an example of a remote control transmitter used in the wide television receiver of the present invention, and FIG. 3 is a wide television of the present invention. It is a figure for demonstrating operation | movement of a John receiver.

In FIG. 1, the incoming video signal is input to the image analysis circuit 1 and the aspect conversion circuit 2. The image analysis circuit 1 captures the incoming video signal, for example, in the vertical direction at different horizontal positions over a plurality of fields, so that an image having a mask portion above and below or an image having a mask portion above and below exists. If it is, it analyzes whether or not the video has subtitles in the mask portion. In addition, regarding the circuit configuration and the algorithm of the image analysis circuit 1,
It is described in detail in the “Screen Size Adjusting Device” (reference number 4050000878) filed on October 20, 2014, and therefore its explanation is omitted here.

The image analysis circuit 1 analyzes the input video signal and inputs the result to the aspect conversion circuit 2. The aspect conversion circuit 2 converts the aspect of the video signal input according to an instruction from the image analysis circuit 1 or an instruction from the remote control analysis microcomputer 4, and supplies it to the cathode ray tube 3.

On the other hand, the remote control transmitter 6 is provided with an automatic aspect conversion instruction button as shown in FIG. 2 as an example. When the viewer presses the automatic aspect conversion instruction button, the remote control receiving circuit 5 is Remote control transmitter 6
The received signal is received and the information is input to the remote control analysis microcomputer 4. When the remote control analysis microcomputer 4 determines that the automatic aspect conversion instruction button of the remote control transmitter 6 has been pressed and the automatic aspect conversion instruction has been issued,
The remote control analysis microcomputer 4 issues a command to the image analysis circuit 1 to analyze the image. The image analysis circuit 1 analyzes the input video signal in accordance with this command, and determines whether or not there are upper and lower mask portions (and the width of the upper and lower mask portions, if any).
Also, the presence / absence of subtitles in the upper and lower mask portions is analyzed and a command is issued to the aspect conversion circuit 2 so as to obtain the optimum aspect.

Although only the automatic aspect conversion instruction button is shown in FIG. 2, an automatic aspect conversion instruction button may be provided together with the aspect designation button corresponding to each mode as shown in FIG. .
In this case, when a predetermined aspect (mode-) is selected by the aspect designating button, the remote control receiving circuit 5 receives the signal, and the remote control analyzing microcomputer 4 directly issues a command to the aspect converting circuit 2.

In the wide television receiver of the present invention thus constructed, when the automatic aspect conversion instruction button is pressed, the image analysis circuit 1 analyzes the input video signal as described above, and FIG. As shown, as an example, when there is no upper and lower mask part, the above mode is set. When there is an upper and lower mask part and there is no subtitle in the mask part at the bottom of the image (subtitle exists inside the image), the mode is set to When there is a mask portion and subtitles are present in the mask portion below the image, a command is issued to the aspect conversion circuit 2 to set the mode, and the aspect is converted. As a result, the mode is set according to the input video signal.

Further, the wide television receiver of the present invention operates as follows. As an example, when there is no upper and lower mask portion and the second automatic aspect conversion instruction button is pressed, the image analysis circuit 1 also determines that the aspect ratio is 4: 3 (there is no upper and lower mask portion), and 1
The aspect conversion circuit 2 is instructed to change the aspect to a mode (for example, a mode) different from the mode of the first time. Therefore, when the automatic aspect conversion instruction button is pressed again (third time), it is determined that the aspect ratio is 4: 3 (the upper and lower mask portions are not present), and the mode different from the second mode (for example, the mode ), The aspect conversion circuit 2 is instructed to convert the aspect. As described above, when there is no upper and lower mask portion, the mode is first set, but if the automatic aspect conversion instruction button is further pressed, the mode is sequentially changed like, for example, mode → mode →. As a result, even if the viewer is not satisfied with the first aspect conversion, another mode can be set by further pressing the automatic aspect conversion instruction button. When there are no upper and lower mask portions and when there are upper and lower mask portions, the priority order of the modes may be set, and the modes may be sequentially changed according to the priority order.

As described above, the automatic aspect conversion instruction button provided in the wide television receiver of the present invention does not switch the operating state and the non-operating state of the image analysis circuit 1. If the image analysis circuit 1 is constantly operated, the aspect may be frequently changed depending on the state of the image, and conversely it may be difficult to see. According to the present invention, when an instruction is given by the automatic aspect conversion instruction button, the image analysis circuit 1 is operated to perform the aspect conversion, so that there is no such inconvenience. Furthermore, changes in the viewing environment such as channel switching, audio mode switching (stereo, monaural, after two countries), input source switching (tuner input, external input), etc. are detected, and when these viewing environments change, automatic aspect It is more convenient if the image analysis circuit 1 is operated even if the conversion instruction button is not pressed. The remote controller analyzing microcomputer 4 can easily determine the channel switching and the input source switching, and the normal microcomputer can easily determine the audio mode switching.

In the embodiment described above, the remote control transmitter 6 is provided with the automatic aspect conversion instruction button, but it goes without saying that the automatic aspect conversion instruction button may be provided in the television receiver main body. . Further, in the above description, only the mode is shown, but the aspect conversion referred to in the present invention is different in the display mode on the display screen of the video signal including the mode conversion and the adjustment of the vertical position and the vertical amplitude. It is to be noted that, for example, a mode obtained by adjusting the vertical position may be used as another mode, and the aspect conversion of the present invention is not limited to this embodiment.

[0018]

As described above in detail, in the wide television receiver of the present invention, the remote aspect transmitter or the main body of the receiver is provided with the automatic aspect conversion instruction button, and the instruction is made by the automatic aspect conversion instruction button. If the automatic aspect conversion instruction button is used, the image analysis circuit is operated to analyze the incoming video signal and the analysis result is input to the aspect conversion circuit to display the display screen. Since it is configured to convert the aspect of the image to be displayed in, the viewer can display the image in the optimal aspect without performing complicated operations. Moreover, since the image analysis circuit is operated at the timing desired by the viewer to convert the aspect, the mode (aspect) is not frequently switched.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a remote control transmitter used in the present invention.

FIG. 3 is a diagram for explaining the operation of the present invention.

FIG. 4 is a diagram showing a horizontally long image in which upper and lower portions are masked.

FIG. 5 is a diagram showing a display example by a wide television receiver.

FIG. 6 is a diagram for explaining aspect conversion.

FIG. 7 is a diagram showing an example of a remote control transmitter used in a conventional wide television receiver.

[Explanation of symbols]

 1 image analysis circuit 2 aspect conversion circuit 3 cathode ray tube 4 remote control analysis microcomputer 5 remote control reception circuit 6 remote control transmitter

Claims (2)

[Claims] 1. A wide aspect display screen having an aspect ratio of 16: 9, an image analysis circuit for analyzing an incoming video signal, and an aspect conversion for differentiating a display mode of the incoming video signal on the display screen. In a wide television receiver including a circuit, a remote control transmitter or a main body of the receiver is provided with an automatic aspect conversion instruction button, and a determination means for determining whether or not an instruction is made by the automatic aspect conversion instruction button is provided. When an instruction is given by the aspect conversion instruction button, the image analysis circuit is operated to analyze the incoming video signal, and the analysis result is input to the aspect conversion circuit to display the aspect ratio of the video displayed on the display screen. To be converted, and the automatic aspect conversion instruction button Once, the wide television receiver characterized by being configured to occupy successively different display modes on the display screen. 2. A means for detecting a change in at least one viewing environment among channel switching, audio mode switching, and input source switching, and the image analysis even when at least one of these viewing environments changes. The wide television receiver according to claim 1, wherein the wide television receiver is configured to operate a circuit.