JP3228464B2 - Wide television receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to 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, wide TV) having a 16: 9 aspect ratio wide-screen display screen has appeared, and as a video source, as shown in FIG. Sources in various modes, 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 range in which an image exists (vertical size) are supplied. Have been.

An image source as shown in FIG.
If the image is displayed as it is, the image becomes a horizontally elongated image as shown in FIG. 5A. However, if the viewer manually sets the aspect conversion, as shown in FIG. The image in the range of the aspect ratio of 16: 9 is enlarged, and the display that makes full use of the wide-aspect image display unit can be performed. As described above, the wide TV is provided with the aspect conversion circuit so as to convert the aspect of the video according to the viewer's preference.

In a wide TV, an aspect ratio of 4: 3
There are various modes for displaying the video signal of the aspect ratio. For example, a mode of displaying the video signal having the aspect ratio of 4: 3 by compressing the time axis (or compressing the horizontal deflection width) (FIG. 6)
(A) Refer to the left side of the arrow).
No. 71 proposes a non-linear mode for enlarging only the left and right ends in the horizontal direction of a video signal with an aspect ratio of 4: 3 (see FIG. 6A), A mode for enlarging and displaying a portion having an aspect ratio of 16: 9 (see FIG. 6B), enlarging a portion having an aspect ratio of 16: 9 in a vertical center portion of a video signal having an aspect ratio of 4: 3, and lowering the image. There is a mode (see FIG. 6C) in which the lower end is compressed in the vertical direction and displayed in order to put the subtitles existing in the non-picture part into the screen.

Assuming that there are, for example, four modes for displaying a video signal having an aspect ratio of 4: 3 in a conventional wide TV, the remote control transmitter has P1 to P4 corresponding to those modes as shown in FIG. Four aspect designation buttons, P4, are provided, and the viewer determines which mode is appropriate for the video each time the video source is switched, and presses the aspect designation button corresponding to the mode to switch the aspect. Conversion was being performed. Further, since the upper and lower mask widths are not always constant, the viewer manually shifts the vertical position of the image as necessary.

[0006]

As described above, in the conventional wide-screen TV, the viewer manually includes mode conversion and adjustment of the vertical position and the vertical amplitude in accordance with the video source every time the video source is switched. However, there is a problem that a so-called aspect conversion for changing the display mode on the display screen 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 having an aspect ratio of 4: 3 will increase in the future, and in that case, an aspect designation button corresponding to the mode must be further provided in the remote control transmitter. However, there is also a problem that the usability is deteriorated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to improve the operability of aspect conversion in a wide television receiver having a 16: 9 aspect ratio wide-screen display screen. And

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, the present invention provides: (1) a wide aspect display screen having an aspect ratio of 16: 9 and a luminance level of an incoming video signal; A wide-screen television comprising: an image analysis circuit for analyzing whether or not the image has a mask portion at least above and below, and an aspect conversion circuit for converting an aspect of the video signal displayed on the display screen. in a television receiver, said
Before the aspect conversion circuit is displayed on the display screen,
Has multiple conversion modes as the aspect of the video signal
And the video signal does not have a mask portion above and below.
This is the first image or the second image with mask
2, the plurality of conversion modes,
It has established a priority to de, comprising an automatic aspect ratio conversion instruction button provided on the remote control transmitter or receiver body, and a judging means for judging whether the instruction by the automatic aspect conversion instruction button has been made, the determination If it is determined by the means that the instruction with the automatic aspect conversion instruction button has been made, the aspect conversion circuit includes:
Whether the image is the first image by the image analysis circuit
Based on a is one of the analysis result 2 of the image, the plurality of variable
Select the conversion mode with the highest priority from among the conversion modes.
Aspects of the video signal displayed on the display screen
The aspect conversion.
The conversion mode by the conversion circuit is changed to the conversion with the highest priority.
From one conversion mode to another conversion mode according to the priority order.
Provides wide television receiver characterized by being configured a sequentially switching the switching means Te, (2) an aspect ratio of 16: 9 and a display screen of a wide aspect of the luminance level of the incoming video signal A wide-screen television comprising: an image analysis circuit for analyzing whether or not the image has a mask portion at least above and below, and an aspect conversion circuit for converting an aspect of the video signal displayed on the display screen. In the John receiver, the aspect conversion circuit has a plurality of conversion modes as aspects of the video signal displayed on the display screen, and an automatic aspect conversion instruction button provided on a remote control transmitter or a receiver main body, Determining means for determining whether or not the automatic aspect conversion instruction button has been instructed; and If it is determined that the first instruction has been made by the automatic aspect conversion instruction button, the aspect conversion circuit determines one of the plurality of conversion modes based on the analysis result by the image analysis circuit.
One of the conversion modes is selected, and the aspect of the video signal displayed on the display screen is converted. A conversion circuit, wherein the aspect of the video signal displayed on the display screen is configured to be sequentially changed to another conversion mode among the plurality of conversion modes, a wide television receiver characterized by the above-mentioned. To provide.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a wide-screen television receiver according to the present invention. FIG. 1 is a block diagram showing one embodiment of a wide television receiver of the present invention, FIG. 2 is a diagram showing one 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 explaining operation of a John receiver.

In FIG. 1, an incoming video signal is input to an image analysis circuit 1 and an aspect conversion circuit 2. The image analysis circuit 1 analyzes the luminance level by taking in an incoming video signal, for example, vertical data at different horizontal positions over a plurality of fields, and analyzes whether the image has a mask portion at the top and bottom or a mask at the top and bottom. If the image has a portion, it is analyzed whether or not the image has a caption in the mask portion. The circuit configuration and algorithm of the image analysis circuit 1 are described in “Screen Size Adjustment Apparatus” filed by the present applicant on October 20, 1993 (Japanese Patent Application No. 5-285862 (see Japanese Patent Application Laid-Open No. 7-170425). )), The description 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 input video signal 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 CRT 3.

On the other hand, the remote controller transmitter 6 is provided with an automatic aspect conversion instruction button as shown in FIG. 2 as an example, and when the viewer presses the automatic aspect conversion instruction button, the remote control receiving circuit 5 Remote control transmitter 6
The transmitted 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 instructs the image analysis circuit 1 to analyze an image. The image analysis circuit 1 analyzes the input video signal according to this command, and determines whether or not there is an upper and lower mask portion (and the width of the upper and lower mask portions, if any).
Then, 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 an optimum aspect.

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

When the automatic aspect conversion instruction button is pressed in the wide television receiver of the present invention having the above-described configuration, the image analysis circuit 1 analyzes the input video signal as described above, and FIG. As shown in the example, when there is no upper / lower mask portion, the above-described mode is set. When there is an upper / lower mask portion and no subtitle exists in the mask portion below the image (subtitles exist inside the image), the mode is set. If there is a mask portion and subtitles exist 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, if there is no upper and lower mask portion, and the second automatic aspect conversion instruction button is pressed, the image analysis circuit 1 again determines that the aspect ratio is 4: 3 (there is no upper and lower mask portion) and 1
A command is issued to the aspect conversion circuit 2 to set the mode to a mode (for example, a mode) different from the first mode to convert the aspect. Therefore, when the (third) automatic aspect conversion instruction button is pressed again, the aspect ratio is determined to be 4: 3 (there is no upper and lower mask portion), and a different mode (for example, mode ) To the aspect conversion circuit 2 to convert the aspect. As described above, when there is no upper / lower mask portion, the mode is set first, but when the automatic aspect conversion instruction button is further pressed, the mode is sequentially changed, for example, mode → mode →. Thus, 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. A mode priority may be set for each of the case where there is no upper and lower mask portions and the case where there are upper and lower mask portions, and the mode may be sequentially changed according to the priority order.

Further, changes in the viewing environment such as channel switching, audio mode switching (stereo, monaural, after two countries), input source switching (tuner input, external input) and the like are detected. It is more convenient to operate the image analysis circuit 1 even if the automatic aspect conversion instruction button is not pressed. Note that channel switching and input source switching are performed by the remote control analysis microcomputer 4.
Can be easily determined, and the switching of the audio mode can be easily determined by the microcomputer.

In the above-described embodiment, the remote controller transmitter 6 is provided with the automatic aspect conversion instruction button. However, it is needless to say that the automatic aspect conversion instruction button may be provided on the main body of the television receiver. . Further, in the above description, only the modes are described. However, the aspect conversion in the present invention is different from the aspect conversion in the present invention in that the display mode of the video signal including the mode conversion and the adjustment of the vertical position and the vertical amplitude on the display screen is different. For example, a mode obtained by adding a vertical position to a mode may be used as another mode, and the aspect conversion of the present invention is not limited to the present embodiment.

[0018]

As described in detail above, in the wide television receiver of the present invention, the aspect conversion circuit includes
Multiple aspects of the video signal displayed on the display screen
And the video signal is masked up and down
This is the first image with no part, or the mask part
Each of them is different depending on whether it is a second video with a minute
Priority is provided for the conversion mode, an automatic aspect conversion instruction button provided on the remote control transmitter or the receiver body, and a determination means for determining whether the automatic aspect conversion instruction button has been instructed , If it is determined by the determining means that an instruction has been given by the automatic aspect conversion instruction button, the aspect conversion circuit determines whether the image is the first video or the second video by the image analysis circuit .
By based on whether the analysis result is, of the plurality of conversion modes
Select the conversion mode with the highest priority
To convert the aspect displayed on the issue display screen
Configuration and conversion mode by aspect conversion circuit
From the highest priority conversion mode to other conversion modes
And switching means for sequentially switching according to priority.
It was composed. The aspect conversion circuit has a plurality of conversion modes as the aspect of the video signal displayed on the display screen. A determination means for determining whether or not an instruction has been given by a button; and if the determination means determines that the first instruction has been given by the automatic aspect conversion instruction button, the aspect conversion circuit sets an image based on the analysis result by the image analysis circuit. One of the plurality of conversion modes is selected, the aspect displayed on the display screen of the video signal is converted, and the determination unit determines that the second or subsequent instruction has been made by the automatic aspect conversion instruction button. Then, the aspect conversion circuit controls the aspect ratio of the video signal displayed on the display screen. It was adapted to successively different to other conversion mode of said plurality of conversion modes. This allows the viewer to display an image in an optimal aspect without performing a complicated operation.

[Brief description of the drawings]

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

FIG. 2 is a diagram illustrating 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 landscape image in which upper and lower portions are masked.

FIG. 5 is a diagram illustrating 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]

 DESCRIPTION OF SYMBOLS 1 Image analysis circuit 2 Aspect conversion circuit 3 CRT 4 Remote control analysis microcomputer 5 Remote control receiving circuit 6 Remote control transmitter

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Claims (2)

(57) [Claims] An image analysis circuit for analyzing a display screen of a wide aspect having an aspect ratio of 16: 9 and a luminance level of an incoming video signal to determine whether or not the image has at least a mask portion above and below. And a aspect conversion circuit for converting an aspect of the video signal displayed on the display screen, wherein the aspect conversion circuit is displayed on the display screen.
There are a plurality of conversion modes as the aspect of the video signal.
And the video signal has a mask portion above and below
Not the first image, or there is a mask portion above and below
Each of the plurality of conversions depending on whether it is a second video
Has established priority over mode includes an automatic aspect ratio conversion instruction button provided on the remote control transmitter or receiver body, and a judging means for judging whether the instruction by the automatic aspect conversion instruction button has been made, the determination When it is determined by the means that the instruction with the automatic aspect conversion instruction button has been made, the aspect conversion circuit causes the image analysis circuit to execute the first image conversion.
Of the plurality of conversion modes based on the analysis result of whether the video is the second video or the second video.
Select the conversion mode and display the video signal on the display screen.
It is configured to convert the displayed aspect, and further includes a conversion mode by the aspect conversion circuit,
From the highest priority conversion mode to another conversion mode
Switching means for sequentially switching according to the priority order;
Wide television receiver which is characterized by being configured with a. 2. An image analysis circuit for analyzing a wide aspect display screen having an aspect ratio of 16: 9 and an incoming video signal to determine whether or not the image has a mask portion at least above and below. And a wide-screen television receiver having an aspect conversion circuit for converting an aspect of the video signal displayed on the display screen, wherein the aspect conversion circuit converts the video signal displayed on the display screen. A plurality of conversion modes as aspects, an automatic aspect conversion instruction button provided on the remote control transmitter or the receiver body, and a judging means for judging whether or not an instruction has been made by the automatic aspect conversion instruction button; When it is determined that the first instruction by the automatic aspect conversion instruction button has been made by the The spectrum conversion circuit selects one of the plurality of conversion modes based on an analysis result by the image analysis circuit, and converts an aspect of the video signal displayed on the display screen, When the determination unit determines that the second and subsequent instructions have been given by the automatic aspect conversion instruction button,
The wide-screen television receiver, wherein the aspect conversion circuit is configured to sequentially change an aspect of the video signal displayed on the display screen to another conversion mode among the plurality of conversion modes. Machine.