JP4271698B2 - Receiver, tuner, television receiver and playback device - Google Patents

Description

  The present invention relates to an image receiving apparatus that converts a video signal into a video.

In recent years, wide video signals having various aspects have been rapidly spread. Therefore, in order to cope with various aspects, the horizontal deflection means is provided with a horizontal magnification setting means for setting the magnification, and the vertical deflection means is provided with a vertical magnification setting means for setting the magnification, in the horizontal direction and the vertical direction. There has been disclosed a television receiver configured to zoom and display at an arbitrary magnification (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 8-23483

  However, in the above proposed technique, a television receiver having a horizontal deflection unit or a vertical deflection unit can display an image by zooming to an arbitrary magnification, but does not have a horizontal deflection unit or a vertical deflection unit. Then, this disclosed technique cannot be applied.

  In recent years, terrestrial digital broadcasting has started and high-definition video with an aspect ratio of 16: 9 is becoming widespread. However, there are many conventional 4: 3 images. Due to the convenience of broadcasting stations, 4: 3 images are 16: 9 high-definition images with a black frame (hereinafter referred to as no image area) with no images. In some cases, the aspect-converted version is broadcast.

  When such an image is displayed on a display device having an aspect ratio of 4: 3, a non-image area is displayed around the image, and therefore, the image is displayed as an image smaller than the actual display area. As described above, since only a small image can be displayed in comparison with the display area of the display device, it is difficult for consumers to accept and is a factor that hinders the spread of digital broadcast receiving devices.

  Therefore, the present application has been made to solve such problems, and the purpose is to display a 4: 3 aspect ratio image from an aspect ratio 4: 3 display on a 4: 3 display device. In addition, it is possible to display an image with few non-image areas.

In order to solve the above problems, the first invention includes display method setting means and display control means. Among these, the display method setting means changes the display method of the video by the display device having an aspect ratio of 4: 3 to any one of a display method using a standard size and a display method using a predetermined enlarged size expanded from the standard size. Further, the display control means causes the display device to display the video having an aspect ratio of 16: 9 indicated by the video signal input from the outside by the display method set by the display method setting means. The display method setting means is configured to set a video display method in response to a user operation.

  The setting method by the display method setting means in this configuration is not particularly limited. For example, a configuration in which the display method is set by storing information that can specify the display method in a predetermined storage area is conceivable.

Also, the display method setting means in this configuration is a means for setting a video display method in response to a user operation, and displays regardless of what kind of video the externally input video signal represents. What is necessary is just to comprise so that the setting of a method is enabled.

  However, the video display method can be set by adding an area in which no image exists (hereinafter referred to as “no-image portion”) to an image with an aspect ratio of 4: 3. It is good also as a structure implement | achieved on condition that it is not an additional image | video. The video that is not an additional video here is a video that was generated from the beginning with an aspect ratio of 16: 9. When such an image is displayed on a display device having an aspect ratio of 4: 3, an aspect ratio of 4: 3 is usually forcibly added by adding a non-image portion above and below the image. It is displayed on the display device. Therefore, in this case, the non-image portion added to the upper and lower portions of the display area in the display device is displayed.

  For such a video, some users may want to reduce the upper and lower no-image areas, but when this image is displayed by a display method with an enlarged size, the upper and lower no-image areas are reduced due to enlargement. Along with this, the left and right end side regions where the image exists are also protruded from the display area. In consideration of this, when the video indicated by the video signal input from the outside is an additional video, it is particularly effective in terms of satisfying the user's request to arbitrarily select a video display method. It can be said that there is.

Therefore, when the image represented by the video signal input from the outside is an addition image, in order to be able to choose how to display the images optionally, a first aspect of the present invention, for example, such as a second invention It can be considered to be an image receiving device .

  In this image receiving apparatus, based on a video signal input from the outside, a video having an aspect ratio of 16: 9 indicated by the video signal is added to a video having an aspect ratio of 4: 3 with no image. Video judging means for judging whether or not the video is an additional video. The display method setting unit is configured to enable setting of a display method in response to a user operation when the video determination unit determines that the video is not an additional video.

  In this configuration, when the video determining unit determines that the video is an additional video, the video display method may be automatically set to one of the display methods. It can be said that it is preferable to adopt a configuration in which the display method is set according to the following reason. That is, as described above, the additional video is a video to which a non-image portion is added, and the non-image portion is additionally added up and down when being displayed on a 4: 3 display device. It is displayed as a small picture surrounded by no-picture part. With such a video, even if it is displayed by a display method using an enlarged size, it is unlikely that the area where the image exists protrudes from the display area. As a result, there is less room for the user to display with the standard size display method, so there is no problem even if the display method with the enlarged size is used.

Therefore, in order to realize this, for example, the second invention may be an image receiving device like the third invention .
In this image receiving apparatus, the display method setting unit is configured to set the video display method to the display method based on the enlarged size when the video determination unit determines that the video is an additional video.

  By the way, as described above, the video signal indicates not only an image generated with an aspect ratio of 16: 9 from the beginning but also an additional image with an aspect ratio of 16: 9 by adding a non-image portion. It is also broadcast as a thing. A broadcasting station that broadcasts such a video signal broadcasts the video signal indicating the additional video as a signal including an identification signal for identifying that the video has undergone such aspect conversion. Is common.

Therefore, the display method setting means described above may be configured to determine whether or not the video indicated by the video signal is an additional video based on this identification signal. For this purpose, for example, any one of the above-described inventions can be considered as an image receiving apparatus as in the fourth invention .

  In this image receiving device, the video determination means includes the video signal when an externally input video signal includes an identification signal for identifying that the video indicated by the video signal is the additional video. The video indicated by the signal is determined to be the additional video.

  Note that a video signal indicating an aspect-converted video having an aspect ratio of 16: 9 is often broadcast without including an identification signal for some reason even though it originally indicates an additional video. In such a case, in the configuration for determining whether or not the video is an additional video based on the presence or absence of an identification signal, it is determined that the video is generated with an aspect ratio of 16: 9 from the beginning even though the video is an additional video. As a result, there is a risk that the image surrounded by the non-image area is displayed on the display device.

Therefore, without using the determination of the presence or absence of the identification signal as described above, or, in a state where combination with the determination of the presence or absence of the identification signal, e.g., the second to fourth any one of the fifth aspect of An image receiving apparatus such as

  The image receiving apparatus includes an attribute detection unit that detects an attribute of a color in an end side area of an image indicated by a video signal input from the outside. When the parameter indicating the color attribute detected by the attribute detection unit is a parameter within a predetermined range, the video determination unit has a video indicated by an externally input video signal as the additional video. It is comprised so that it may determine.

  The “color attribute” in this configuration is, for example, brightness (degree of brightness), saturation (degree of vividness), hue (hue), and the like. Parameters indicating these attributes are detected from the signal component corresponding to the partial region.

  The “edge side area” of the video whose color attribute is detected by this attribute detection means corresponds to the non-image part added to the image when the video indicated by the video signal is an additional image. It is an area to do. Here, the attribute detection means may be configured to perform actual detection from one or more locations in the end side region.

In addition, in each of the above-described image receiving devices, a specific configuration for performing display control by the display control unit is not particularly limited, but for example, an image receiving device as in the sixth invention can be considered.

In receiving apparatus of this, the display control means, the display data in the frame memory for storing video as display data writing, reads out the display data from the frame memory, the display data read out said When the display method is displayed on the display device and the display method based on the enlarged size is set by the display method setting means, the display data stored in the frame memory is converted into the video indicated by the display data. If the display method based on the standard size is set, the display data stored in the frame memory is read out after the address is converted so that the video is enlarged from the standard size to the enlarged size. It is configured to read as it is without address conversion.

Further, as another configuration for performing display control by the display control means, an image receiving device as in the seventh invention may be considered.
In receiving apparatus of this, the display control means, the display data in the frame memory for storing video as display data writing, reads out the display data from the frame memory, the display data read out said When the display method is displayed on the display device and the display method based on the enlarged size is set by the display method setting unit, the video indicated by the display data is displayed for the display data read from the frame memory. If the display method according to the standard size is set while the video is enlarged from the standard size to the enlarged size, the video indicated by the display data read from the frame memory is displayed as the standard size. It is comprised so that it may display on a display apparatus as an image | video of this.

  Further, the display control means in each of the above-described image receiving devices inputs a video signal from the outside. As an input source of this video signal, for example, a video generation that generates a video signal based on a broadcast signal received by an antenna. Means are conceivable.

In this case, the display control means inputs the video signal generated by the video generation means from the video generation means for generating the video signal based on the broadcast signal received by the antenna, for example, as in the eighth invention. And it is good to comprise so that the image | video shown with this video signal may be displayed on a display apparatus with the display method set by the said display method setting means.

In addition, as an input source of the video signal in the display control means, video playback means for reading the video signal stored in the storage unit and playing back the video indicated by the video signal can be considered.
In this case, for example, as in the ninth aspect , the display control means reads out the video signal stored in the storage unit and plays back the video indicated by the video signal by the video playback means. A video signal indicating the video to be displayed may be input, and the video indicated by the video signal may be displayed on the display device by the display method set by the display method setting means.

Further, the tenth invention, when receiving the operation of the user, with respect to the image receiving apparatus is an invention described in any one of the first to ninth display how the images are displayed according to a standard size or larger size METHOD It is a remote control device provided with setting command means for commanding that it should be set .

The eleventh invention is a program for causing a computer system to function as all means included in any of the first to ninth inventions .
This program consists of an ordered sequence of instructions suitable for processing by a computer system, and is provided to the image receiving device and the user who uses it via various recording media and communication lines. is there.

According to the first aspect of the present invention , the video indicated by the video signal input from the outside can be displayed on the display device by any display method of either the standard size display method or the enlarged size display method. . Here, if a video (additional video) obtained by adding a non-image portion having no image to a video having an aspect ratio of 4: 3 is displayed by an enlarged size display method, At least a part of the non-image portion can be an image having a size that protrudes from the display area of the display device. In this way, the area that protrudes from the display area is not displayed on the display device, and as a result, an image with few non-image areas can be displayed.

For this reason, users who have determined that there are many non-image areas and the video is not being displayed properly can be set to the display method using the enlarged size as the video display method. However, it is possible to display an image with few non-image areas on the display device.

Further, this state can be maintained until the setting is changed again after the display method with the enlarged size is set.
According to the second invention, it is possible to arbitrarily select a video display method when the video indicated by the video signal input from the outside is not an additional video.

According to the third invention , when the video indicated by the video signal input from the outside is an additional video, the video display method can be set to the display method based on the enlarged size.

According to the fourth invention , whether or not the video indicated by the video signal is an additional video can be determined based on whether or not the identification signal is included in the video signal.
According to the fifth aspect, when the color attribute in the edge side area of the video is a parameter within a predetermined range, the video display method can be set to the display method based on the enlarged size. Here, the end side area of the video is the area of the non-image area if the non-image area is added to the video, so the above “predetermined range” matches or approximates the color attribute in the non-image area. If it is set as a parameter, the non-image area in the additional image can be protruded from the display area, and an image with few non-image areas can be displayed.

Furthermore, since the video display method is set according to the color attribute, the video display method can be set and changed to an appropriate display method without any user operation.
According to the sixth invention, when the display method with the enlarged size is set, the display data stored in the frame memory is address-converted to display the display device based on the read display data The video displayed on the screen can be an enlarged size video. On the other hand, when the display method by the standard size is set, the display data stored in the frame memory is not address-converted, so the video displayed on the display device based on the display data read from here is standard. It can be a picture of size.

According to the seventh invention, when the display method by the enlarged size is set, after reading the display data stored in the frame memory, by enlarging the video itself based on the display data, An image displayed on the display device can be an enlarged size image. On the other hand, when the display method using the standard size is set, the display data stored in the frame memory is read out, and the video is not enlarged based on the display data. The video can be a standard size video.

According to the eighth aspect, with respect to the video signal generated from the broadcast signal received by the antenna, the display method of the video indicated by this video signal can be set in response to a user operation.

According to the ninth aspect , based on the video signal indicating the video reproduced by the video reproducing means, the display method of the video indicated by the video signal can be set in response to the user's operation.

In a tenth aspect of the invention, the image receiving apparatus according to any one of the first to ninth aspects is notified of the display method of the video desired by the user, whereby the image receiving apparatus can set the display method. .

The computer system controlled by the program according to the eleventh invention is suitable for constituting a part of the image receiving apparatus according to any one of the first to ninth inventions.

Embodiments of the present invention will be described below with reference to the drawings.
(1) First Embodiment (1-1) Overall Configuration FIG. 1 is a block diagram of a digital broadcast receiving apparatus to which the present invention is applied. FIG. 2 is an external view of a remote control device to which the present invention is applied.

Reference numeral 1 is a digital broadcast receiving apparatus, 2 is a display apparatus, and 3 is a remote control apparatus.
The display device 2 is a monitor device having an aspect ratio of 4: 3. The display device 2 is provided with terminals (S terminal, A / V terminal, etc.) for inputting NTSC television signals and D terminal for inputting high-definition video. In this embodiment, reception for digital broadcasting is provided. The apparatus 1 is connected to each other via a D terminal connection cable. The display device 2 also includes a sound device, and has a sound input terminal for inputting a sound signal.

Next, the digital broadcast receiving apparatus 1 will be described in detail.
Reference numeral 11 denotes an input terminal provided on the wall surface of the housing for connecting a receiving antenna (not shown) for receiving terrestrial digital broadcasting.

Reference numeral 12 denotes a channel selection unit for extracting any one broadcast signal from the terrestrial digital broadcast signal input to the input terminal 11.
A remote control signal receiving unit 13 is provided corresponding to the remote control device 3, and receives a remote control signal output from the remote control device 3, decodes it, and inputs it to a control microcomputer 33 described later.

Reference numeral 14 denotes an input device which is provided on the outer wall surface of the housing of the digital broadcast receiving device 1, and can input a command to the digital broadcast receiving device 1 without using the remote control device 3.
An audio processing unit 15 receives audio data decoded by an MPEG processing unit 24, which will be described later, and converts it into an analog signal by digital / analog conversion (hereinafter referred to as D / A conversion). The sound is output to the audio input terminal of the display device 2 through the output terminal 17.

Reference numeral 20 denotes demodulation means described later.
Reference numeral 30 denotes an image receiving apparatus described later.
Next, the demodulating means 20 will be described in detail.

The demodulator 20 includes a demodulator 22, a TS processor 23, and an MPEG processor 24.
In this embodiment, the demodulator 22 demodulates an OFDM (Orthogonal Frequency Division Multiplexing) signal, which is a modulation method of terrestrial digital broadcasting, and outputs a TS (abbreviation of Transport Stream, hereinafter referred to as TS) signal. It is. In addition, the TS signal includes, for example, one high-definition video or a plurality of standard image quality and a plurality of programs such as data broadcasting.

The TS processor 23 extracts a TS signal of one program (program) desired by the user from a TS signal including a plurality of programs demodulated by the demodulator 22.
The MPEG processing unit 24 receives the TS signal extracted by the TS processing unit 23, performs MPEG decoding on the TS signal, separates the data into video and audio data, and outputs the video data to the video processing unit 31 described later. On the other hand, the audio data is output to the audio processing unit 15.

Next, the image receiving device 30 will be described in detail.
The image receiving device 30 includes a video processing unit 31, a frame memory 32, and a control microcomputer (CPU) 33.

  The video processing unit 31 receives the video data decoded by the MPEG processing unit 24 and sequentially writes the data to predetermined addresses in the frame memory 32. The written video data is sequentially read from a predetermined address and D / A converted, and then supplied to the display device 2 via the video output terminal 19. By the way, when the video data write address and the read address are the same, they are displayed on the display device 2 with a standard screen size designated by the broadcasting station. On the other hand, when the video data write address and read address are not the same, the screen size is changed and displayed on the display device 2.

  The control microcomputer 33 decodes a command generated by the user operating the remote control signal receiving unit 13 or the input device 14, and selects the channel selection unit 12, demodulator 22, TS processing unit 23, MPEG processing unit 24, video processing unit 31, The frame memory 32 is controlled and various processing programs to be described later are executed.

Next, the remote control device 3 will be described in detail with reference to FIG.
Reference numeral 41 denotes a cursor movement button, which is a button for moving the cursor displayed on the screen to an arbitrary position. In this embodiment, eight directions can be arbitrarily selected.

Reference numeral 42 denotes a determination button, which is a determination button for selecting a menu or icon.
Reference numeral 43 denotes a display switching dedicated button for alternately switching between “enlarged display” and “display by standard size”.

Reference numeral 44 denotes various buttons. For example, there are buttons for selecting a well-known reception channel and adjusting the volume.
Next, the operation will be described.

  When the user operates the remote control device 3 and inputs a command to the digital broadcast receiving device 1 to view a predetermined program, a remote control signal (in other words, an infrared signal) output from the remote control device 3 is The remote control signal receiver 13 receives the signal, decodes it, and inputs it to the control microcomputer 33. Then, the control microcomputer 33 to which the command is inputted decodes the command, and in order to realize the command, the channel selection unit 12, demodulator 22, TS processing unit 23, MPEG processing unit 24, video processing unit 31, frame Each memory 32 is controlled.

  In this embodiment, the remote control device 3 is used as a command input means for the user. However, the present invention is not limited to this, and the command is operated by operating the input device 14 provided on the outer wall surface of the housing of the digital broadcast receiving device 1. You may enter.

  Here, when a viewing command is input from the user, a terrestrial digital broadcast signal is taken into the digital broadcast receiver 1 via the input terminal 11. From the captured digital terrestrial broadcast signal, the channel selection unit 12 extracts any one broadcast signal desired by the user.

One broadcast signal extracted in this way is input to the demodulator 22, and after OFDM demodulation, the TS processor 23 extracts a TS signal corresponding to the program (program) desired by the user.
A TS signal corresponding to a desired program (program) extracted by the TS processing unit 23 is decoded by the MPEG processing unit 24 and separated into video and audio data. 31 is output. The audio data is output to an audio processing unit 15 described later.

  The video data output to the video processing unit 31 is sequentially written at predetermined addresses in the frame memory 32. The written video data is sequentially read from a predetermined address and D / A converted, and then transmitted to the display device 2 via the video output terminal 19 to display an image.

  On the other hand, the audio data output to the audio processing unit 15 is D / A converted and then input to the audio input terminal of the display device 2 via the audio output terminal 17 and output from the display device 2 as audio.

Next, an enlarged image display method will be described in detail with reference to FIGS.
FIG. 3A is an explanatory diagram in the case where a non-image portion without an image (portion filled in black in the drawing) exists on the entire outer periphery around the image. As can be seen from the figure, the display area of the display device cannot be used effectively and is difficult to see. Therefore, it is desirable to enlarge the image centering on the center of the screen and display it on the entire display screen as described below. In such a case, it is preferable to display the image by multiplying it by 4/3 on both the X axis and the Y axis, and it is preferable that the non-image area disappears and the display screen can be displayed without missing the image. There is no need to enlarge the image by a factor of 4, and there is no practical problem with this value. Since the main purpose is to eliminate the non-image area, the value may be slightly larger than this value. For example, the enlargement ratio is preferably about 1.3 to 1.4.

Next, FIG. 3B is an explanatory diagram in the case where there are no image portions (portions blacked out in the drawing) where there are no images above and below the image. As can be seen from the figure, the display area of the display device cannot be used effectively, and it is a display form that cannot be said to be a satisfactory screen display. Therefore, it is desirable to enlarge the image centering on the center of the screen and display it on the entire display screen as described below. In such a case, when the image is displayed with a magnification of 4/3 on both the X axis and the Y axis, the no-image portion disappears, but the left and right images are partially lost. In this case, it is preferable to set the enlargement ratio to be 4/3 times at the maximum in consideration of the non-image area and missing image. Even if only the Y axis is enlarged, the non-image area can be eliminated, but this is not preferable because the image is distorted. Therefore, it is desirable that the enlargement ratio of the X axis and the Y axis be the same value.
(1-2) Processing by the Control Microcomputer 33 Hereinafter, processing executed by the control microcomputer 33 to realize the enlarged display of the image will be described.

First, display data writing processing executed by the control microcomputer 33 will be described.
When display data writing processing is executed, real-time processing is executed in which the video data decoded by the MPEG processing unit 24 is sequentially written into a predetermined address range of the frame memory 32 via the video processing unit 31. Here, the predetermined address is an address range in the image layout designated by the broadcast source (program).

Next, display data reading processing executed by the control microcomputer 33 will be described with reference to FIG.
When the display data reading process is executed, it is determined in S210 (S represents a step) whether the display mode is currently "enlarged display" or "display in standard size". The determination method may be arbitrary. For example, the pressing state (display size signal) of the display switching dedicated button 43 may be stored in a storage device provided in the control microcomputer 33. When the display mode is set to “enlarged display”, the process proceeds to S220. In S220, “1” is substituted and stored in the variable F, and in the subsequent S230, the read memory range (in other words, the address area) of the frame memory 32 is set for enlarged display. Specifically, with respect to the standard address range, the address is set so that each of the X-axis and Y-axis has a value that is three-fourths based on the address of the memory corresponding to the center of the screen. Transition.

  On the other hand, if the display mode is set to “display at standard size” in S210, the process proceeds to S225. In S225, “0” is substituted for the variable F and stored, and then in S235, the read memory range (in other words, the address area) of the frame memory 32 is set for standard use. That is, it is set to be the same value as the write address range in the image layout designated by the broadcast station (program), and the process proceeds to S240.

  In S240, the value of the variable F is determined and the value is “1”, that is, the display mode is “enlarged display”, or the value of the variable F is “0”, that is, “display in standard size”. To determine if If the value of the variable F is “1”, the process proceeds to S250, the display data in the read memory range is read from the frame memory 32, and the read display data is centered on the center of the screen and the X axis and Y axis respectively. After generating the display data enlarged to 4/3, the display data is displayed on the display device 2, and the process proceeds to S260.

  On the other hand, if the value of the variable F is “0” in S240, the process proceeds to S255, the display data within the read memory range is read from the frame memory 32, the read display data is displayed on the display device 2, and S260 is displayed. Migrate to

  In S260, it is determined whether or not there has been an instruction to change the display mode. If there is a change in the display mode, the process proceeds to S210, and if there is no change in the display mode, the process proceeds to S240.

  If there is a non-image portion in the extracted video data in this way, the display mode can be changed to “enlarged display” by a simple operation of simply pressing the display switching dedicated button 43 provided on the remote control device 3. An image without a non-image portion can be displayed on the display device 2 and the feeling of irritation can be reduced. Further, since the display switching dedicated button 43 is provided in the remote control device 3, the user can improve usability without moving from the place (viewing place).

The present invention is particularly effective when the aspect ratio of the display device is 4: 3. Therefore, the aspect of the display device connected to the digital broadcast receiving device 1 is stored, and the aspect ratio is 4: 3. The display mode switching signal (display size signal) should be validated only in this case. In this case, when the aspect ratio of the display device is not 4: 3, the display mode may be always set to “display by standard size”.
(1-3) Actions and Effects According to the image receiving device 30 of the digital broadcast receiving device 1 configured as described above, the video indicated by the video signal input from the outside (demodulation means 20) is displayed in a standard size. It can be displayed on the display device 2 by any display method of display methods or display methods based on an enlarged size (S255, S250 in FIG. 4).

  Here, if a video (additional video) obtained by adding an area where no image exists (hereinafter referred to as a non-image portion) to a video having an aspect ratio of 4: 3 is displayed by an enlarged size display method, the video is displayed. The video image has a size that protrudes from the display area of the display device 2 at the end of the display device, that is, at least a part of the non-image portion. In this way, the area that protrudes from the display area is not displayed by the display device 2, and as a result, it is possible to display an image with few non-image areas.

For this reason, the user who has determined that there are many non-image parts and the video is not properly displayed can set the video display method to the display method based on the enlarged size (by pressing the display switching dedicated button 43). Therefore, it is possible to display an image with a reduced number of non-image areas on the display device.

Further, this state can be maintained until the setting is changed again after the display method with the enlarged size is set.
Further, in the above configuration, the demodulating means 20 that generates the video signal based on the broadcast signal received by the antenna is configured to be an input source of the video signal to the image receiving device 30. That is, the image receiving device 30 in the present embodiment can set the display method of the video indicated by the video signal for the video signal generated from the broadcast signal received by the antenna in response to a user operation.

Further, by notifying the above-described digital broadcast receiving apparatus 1 of the video display method desired by the user via the remote control device 3, the notified display method can be set.
(1-4) Modifications The first embodiment of the present invention has been described above. However, the present invention is not limited to the above configuration, and can take various forms as long as it belongs to the technical scope of the present invention. Needless to say, you get.

  For example, in the first embodiment, the display mode is alternately switched between “enlarged display” and “display by standard size” each time the display switch dedicated button 43 provided on the remote control device 3 is pressed. When the dedicated button 43 is pressed, an icon and a cursor as shown in FIG. 5 may be displayed on the screen, an icon is selected with the cursor, and a display mode assigned to the icon may be selected. Here, 50 is an enlarged display icon, 51 is a standard size display icon, and 52 is a cursor.

With this configuration, the user interface can be improved even when a plurality of enlargement rates are provided, and the visibility can be further improved.
The icons and cursors illustrated in FIG. 5 are examples, and the shapes of icons and cursors and the number of icons are arbitrary, and are not limited to those disclosed in FIG.

  In the first embodiment, the display data is written to the frame memory 32 by determining the address range so that the screen layout specified by the broadcasting station is obtained regardless of the display mode, and when the display data is read out. The display data in the address range corresponding to is read and the read display data is enlarged and displayed according to the display mode. However, the present invention is not limited to this method. When writing data to the frame memory 32, it is enlarged to correspond to the display mode, then written to a predetermined address range, and read out from the predetermined address range regardless of the display mode. Obtainable. Further, a combination of the two may be used to perform a predetermined enlargement process at the time of writing and at the time of reading.

  Further, another modification will be described below. In the following description, the same components as those in the digital broadcast receiving apparatus 1 of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 6 is an explanatory diagram for explaining the display selection automatic processing. Here, points P1 to P4 are brightness level detection pointers set on the non-image area, and are provided on the top, bottom, left and right of the screen, respectively.

The luminance curves described in the right part and the lower part of the screen represent the luminance levels in the AA and BB lines of the screen in a graph. When the luminance levels at points P1 to P4 are lower than the reference level, it can be determined that the area is a non-image area.

  Here, how to determine the reference level will be described. The reference level may be set so that the luminance level is slightly brighter than the black level. Specifically, about 5 to 10% of the white level is desirable. In this embodiment, four brightness level detection pointers have been described. However, the present invention is not limited to this, and may be 3 or less, or 5 or more. There is an effect that can reduce the malfunction. In addition, a specific color such as “blue” may be added to the non-image area. In this case, it is preferable that the hue data can be detected in addition to the luminance level.

Next, display selection automatic processing executed by the control microcomputer 33 will be described in detail with reference to the flowchart of FIG.
When the display selection automatic process is executed, it is determined in S310 whether the luminance level of the image data at the point P1 is equal to or lower than the reference level. If it is below the reference level, the process moves to S320, and it is determined whether or not the luminance level of the image data at the point P2 is below the reference level. If it is below the reference level, the process proceeds to S330, and it is determined whether or not the luminance level of the image data at the point P3 is below the reference level. If it is below the reference level, the process proceeds to S340, and it is determined whether or not the luminance level of the image data at the point P4 is below the reference level. If it is below the reference level, the process proceeds to S350, and the “display mode” is set to “enlarged display”.

  On the other hand, when the luminance level at point P1 is higher than the reference level at S310, when the luminance level at point P2 is higher than the reference level at S320, when the luminance level at point P3 is higher than the reference level at S330, and at S340 If the luminance level of P4 is greater than the reference level, the process proceeds to S355, and the “display mode” is set to “display by standard size”.

  By processing in this way, when there is a non-image part, the user can automatically enlarge the display without operating the remote control device 3 one by one, and the irritability can be reduced.

In this automatic display selection process, the display mode is set with reference to the luminance level of the edge side area in the video. However, in setting the display mode in this automatic display selection process, You may comprise so that the parameter which shows the attribute (for example, saturation (degree of vividness), hue (hue) etc.) other than a level may be referred.
(2) Second Embodiment The digital broadcast receiving apparatus in the present embodiment has the same configuration as the digital broadcast receiving apparatus 1 in the first embodiment, and the processing procedure executed by the control microcomputer 33 is different. Therefore, only the differences will be described in detail.

Note that the second embodiment is configured such that the display mode setting change is realized on the condition that the video signal input from the outside indicates a video generated with an aspect ratio of 16: 9 from the beginning. It has been done.
(2-1) Display Data Reading Process by Control Microcomputer 33 Hereinafter, a display data reading process procedure in the present embodiment will be described with reference to FIG. This display data reading is repeatedly executed while the digital broadcast receiving apparatus 1 is activated and a video signal is input from the outside (input terminal 11).

When the display data reading is started, first, the aspect ratio of the video indicated by the video signal is checked for the video signal input from the outside (S402).
If it is determined in s402 that the aspect ratio is 4: 3 (S402: YES), the display mode is set to “display at standard size” (S404).

  Then, after the read memory range (address area) of the frame memory 32 is set for the standard size (S406), the display data in the read memory range is read from the frame memory 32 and based on the display data. Processing (S408) such that the video is displayed on the display device 2 is performed.

  If it is determined in S402 described above that the aspect ratio is 16: 9 (S402: NO), the video indicated by the video signal input from the outside is an area where no image exists (hereinafter referred to as “no-image portion”). It is checked whether or not the video is an additional video that is added to a video with an aspect ratio of 4: 3 (S410). Usually, a video signal indicating an additional video having an aspect ratio of 16: 9 by adding a non-image part includes an identification signal for identifying that the video has undergone aspect conversion. It is broadcast in the state. Therefore, in S410, whether or not the video indicated by the video signal is an additional video is checked based on whether or not the identification signal is included in the video signal input from the outside.

If it is determined in S410 that the video signal input from the outside is an additional video (S410: YES), the display mode is set to “enlarged display” (S412).
Then, after the read memory range (address area) of the frame memory 32 is set for enlarged display (S414), display data in the read memory range is read from the frame memory 32, and video based on the display data is displayed. Is displayed on the display device 2 (S416).

  If it is determined in S410 described above that the video signal input from the outside is not an additional video, that is, a video generated with an aspect ratio of 16: 9 from the beginning (S410: NO), the display mode at that time is It is checked (S418).

  If it is determined in S418 that the display mode is set to "display at standard size" (S418: YES), after the read memory range (address area) of the frame memory 32 is set for the standard size (S420) The display data within the read memory range is read from the frame memory 32, and an image based on the display data is displayed on the display device 2 (S422). In S422 in this case, an image in which a non-image portion (so-called letterbox) is added to the upper and lower portions of an image having an aspect ratio of 16: 9 is displayed on the display device 2.

  On the other hand, if it is determined in S418 that the display mode is set to “enlarged display” (S418: NO), the read memory range (address area) of the frame memory 32 is set for enlarged display (S424). ), The process proceeds to S422, and an image based on the display data is displayed on the display device 2. In S422 in this case, an image with an aspect ratio of 16: 9 is enlarged, and an image obtained by removing right and left regions (so-called side panels) in the image region is displayed on the display device 2. The Rukoto.

  Thus, after the display of the video in S408, S416, and S422, it is checked whether or not there has been an instruction to change the display mode (S426). This display mode change instruction is identified from a remote control signal transmitted from the remote control device 3 when the dedicated display switching button 43 of the remote control device 3 is pressed.

If it is determined in S426 that there is an instruction to change the display mode (S426: YES)
) After changing the display mode to the contents indicated by the command (S428), the process returns to S402. On the other hand, when it is determined that there is no display mode display instruction (S426: NO), the process returns to S402 without performing S428.
(2-2) Actions and Effects According to the digital broadcast receiving device 1 configured as described above, the following actions and effects are obtained in addition to the actions and effects obtained from the same configuration as the first embodiment. Can be obtained.

  For example, in the display data reading process, for a video signal input from the outside, after it is determined that the video indicated by this video signal is not an additional video (“No” in S410 in FIG. 8), a display mode change instruction ( The display mode can be set in response to the operation of the remote control device 3 by the user (S426 → S428 → S402 → S410 → S418 to S428 in the figure). As a result, when the video indicated by the video signal input from the outside is not an additional video, that is, a video generated with an aspect ratio of 16: 9 from the beginning, the video display method can be arbitrarily selected. it can.

  Further, in the display data reading process, when it is determined that the video indicated by the video signal input from the outside is an additional video (“Yes” in S410 in FIG. 8), the display mode is set to “enlarged display”. (S412 in the figure). That is, when the video indicated by the video signal input from the outside is an additional video, the display mode can be automatically set to “enlarged display”.

  As described above, the additional video is a video in which a non-image portion is added to the left and right of the image. Therefore, when displaying the standard size on the 4: 3 display device 2, the non-image portion is further added up and down. As a result, it is displayed as a small video surrounded by a non-picture portion. Even if such a video is displayed by a display method using an enlarged size, an area where an image exists does not protrude from the display area. Therefore, even if the image is automatically displayed in the enlarged size, it is unlikely that the user should display the image in the standard size display method. Absent. Rather, it can be said that it is preferable from the viewpoint of avoiding unnecessary confusion and reducing unnecessary operation burden on the user.

  Further, in the display data reading process, it is determined whether or not the video indicated by the video signal is an additional video depending on whether or not an identification signal is included in the video signal input from the outside (S410 in FIG. 8). can do.

  In the display data reading process, when the display mode is set to enlarged display, or the display mode is set, the display data read from the display data stored in the frame memory 32 is converted by address conversion. An image to be displayed on the display device 2 based on the business data can be an enlarged size image. On the other hand, when the display method with the standard size is set, the display data stored in the frame memory 32 is not address-converted, so that the display device 2 can be controlled based on the display data read from here. The video to be displayed can be a standard size video.

  In the digital broadcast receiving apparatus 1 described above, the video display mode generated by the demodulating unit 20 based on the broadcast signal received by the antenna is subjected to the user's operation according to the video display mode indicated by the video signal. (S404, S412, and S428 in FIG. 8).

In addition, since the display mode is set in response to the user's operation in this way, as long as the video signal indicates the same video with the same aspect ratio and presence / absence of additional video, even if the reception channel or program is changed or updated, The state of the same display mode can be continued and it is easy to use.
(2-3) Modifications As described above, the second embodiment of the present invention has been described. However, the present invention is not limited to the above-described configuration, and can take various forms as long as it belongs to the technical scope of the present invention. Needless to say, you get.

  For example, in the display data reading process described above, after the address area is set for standard or enlarged display (S406, S414, S420, S424 in FIG. 8), the display data is read from the address area thus set. What has been configured to be performed is illustrated. However, the setting of the address area may be fixed for the standard size, and a video based on the display data read from the address area may be displayed on the display device 2 as a standard size or enlarged size video. As a specific example, as shown in FIG. 9, first, the video indicated by the display data read from the address area is displayed in the display mode without performing the process of setting the address area (S406 and S414 in the figure). If “display in standard size” is displayed on the display device 2 as it is (S408), on the other hand, if the display mode is “enlarged display”, the display is enlarged (4/3 times for both X and Y axes). The apparatus 2 may be configured to display (S430), and the processes after S418 in the figure may be configured as follows. In other words, if “Yes” is determined in S418, display data within the read memory range is read from the frame memory 32, and an image based on the display data is displayed by the display device 2 (S432). . Here, a standard-size video image having an aspect ratio of 4: 3 by adding a non-image portion (letterbox) to the upper and lower portions of the video image having an aspect ratio of 16: 9 is displayed on the display device 2. . On the other hand, if “No” is determined in S418, the display data within the read memory range is read from the frame memory 32, and a video obtained by enlarging the video based on the display data is displayed on the display device 2. Is displayed (S434). Here, an image from which the right and left regions (side panels) have been removed by enlarging the X axis and the Y axis by 4/3 times is displayed on the display device 2.

  With this configuration, when the display mode is set to enlarged display, after reading the display data stored in the frame memory 32, the video itself based on the display data is enlarged, An image displayed on the display device 2 can be an enlarged size image. On the other hand, when the display mode is set to the standard size display, the display data stored in the frame memory 32 is read out, and the video is not enlarged based on the display data. The video displayed on the display device 2 can be a standard size video.

  Further, in the display data reading process described above, the processes after “No” is determined in S410 of FIG. 8 may be configured as follows. That is, as shown in FIG. 10, if “No” is determined in S410, after the processing from S310 to S350 or S355 in the display selection automatic processing in FIG. 7 is finished (S502), the process proceeds to S418. Configure as follows. Note that the processing from S310 onward in this case is performed on the video to be displayed based on the display data in the read memory range, and the point P1 is set in the region assumed as the region where the non-image portion is added in the additional video. To P4 are arranged. In addition, when it is determined “No” in S418, the process proceeds to S412.

  A video signal indicating a video whose aspect ratio is converted from 4: 3 to 16: 9 indicates an additional video, and is normally broadcast in a state where the above-described identification signal is included. However, under the present circumstances, although the additional video is shown, the video signal may be broadcast in a state that does not include the identification signal. In such a case, in the configuration of the second embodiment in which it is determined whether or not the image is an additional image based only on the presence or absence of an identification signal, an image generated with an aspect ratio of 16: 9 from the beginning despite being an additional image. And the video surrounded by the non-image part may be displayed on the display device 2.

  However, if configured as in the modification example shown in FIG. 10, even if a video signal that does not include an identification signal indicates an additional video, it is an additional video in the display selection automatic process (S502 in FIG. 10). It is determined (“No” in S418 in the figure), and the display mode can be set to “enlarged display” (see S350 in FIG. 7). This is because an additional video is a video surrounded by a black non-image area, and therefore, the luminance level at any of the four end side regions in the video is lower than the reference value. Since this reference value is set to a level sufficiently higher than the luminance level in the non-image area, the luminance level of the edge side area is lower than this reference value, and the area is a non-image area. Can be determined.

  In this way, when it is determined that the video indicated by the video signal is an additional video, the additional video is displayed in an enlarged display, so that the non-image portion of the additional image protrudes from the display area. As a result, an image with few non-image areas can be displayed on the display device 2.

Furthermore, since the display mode is automatically set to the enlarged display depending on the luminance level of the edge side area in the video, the display mode can be changed to an appropriate display mode without any user operation.
(3) Other Embodiments The digital broadcast receiving device 1 in each of the embodiments described above may be, for example, a partial component of a digital broadcast tuner or a digital broadcast set top box.

  Moreover, in the said embodiment, what applied the image receiving apparatus in this invention to the receiver 1 for digital broadcasting was illustrated. However, it goes without saying that the image receiving device according to the present invention can be applied to devices other than the digital broadcast receiving device 1.

  For example, the image receiving apparatus according to the present invention can be applied to a digital broadcast television receiver 4 as shown in FIG. In the digital broadcast television receiver 4, only differences from the digital broadcast receiver 1 described above will be described. The display unit 62 connected to the image receiver 30 and having an aspect ratio of 4: 3, and a speaker provided in the display unit 62. 64, a power supply unit 16 and the like. The audio processing unit 15 in the digital broadcast television receiver 4 receives the audio data decoded by the MPEG processing unit 24 and converts the audio data into an analog signal by D / A conversion. It inputs into the speaker 64 via an output terminal. Further, the power supply unit 16 generates operation power necessary for each circuit based on the power input from the terminal 16a for inputting commercial power or the terminal 16b for inputting DC12 to 48V. Supply.

  In the above-described embodiment, the configuration in which the demodulating unit 20 that generates the video signal based on the broadcast signal received by the antenna is the input source of the video signal to the image receiving device 30 is exemplified. However, the image receiving device 30 may be configured to receive a video signal from another input source. For example, it is conceivable that a video reproduction means for reading a video signal stored in the storage unit and reproducing a video indicated by the video signal is used as an input source. As an example of a specific apparatus provided with such video reproducing means, a digital broadcast recording / reproducing apparatus 5 shown in FIG. 12 can be considered.

  In the digital broadcast recording / reproducing apparatus 5, only differences from the digital broadcast receiving apparatus 1 described above will be described. Channel selection unit 12, audio processing unit 15, demodulator 22, TS processing unit 23, MPEG processing unit 24, video Two image processing systems including a processing unit 31 and a frame memory 32 are provided, and a signal from the input terminal 11 is distributed by a distributor 72 and supplied to each system. The digital broadcast recording / reproducing apparatus 5 includes a recording / reproducing apparatus 80 described later.

  The audio processing unit 15 in the digital broadcast recording / reproducing apparatus 5 receives the audio data decoded by the MPEG processing unit 24, converts this into D / A converted into an analog signal, and then the recording / reproducing apparatus 80 (more details). Is output to the recording / playback unit 81 or the switching unit 83).

  In addition, the video processing unit 31 inputs the video data decoded by the MPEG processing unit 24 and sequentially writes the video data at predetermined addresses in the frame memory 32. Thereafter, the video data written in the frame memory 32 is sequentially read from a predetermined address and D / A converted, and then input to the recording / playback apparatus 80 (more specifically, the recording / playback section 81 or the switching section 83).

The recording / playback apparatus 80 will be described in detail.
The recording / playback apparatus 80 includes a recording / playback unit 81, a storage medium 82, and a switching unit 83. Among these, the recording / playback unit 81 performs a recording process for writing the video signal generated by the video processing unit 31a and the audio signal generated by the audio processing unit 15a into the storage medium 82, and a playback process for reading the signal from the storage medium 82. And do. Further, the storage medium 82 is constituted by a storage medium that can be used for recording / reproducing video signals and audio signals, such as flash memory, hard disk, magnetic tape, magneto-optical disk, etc. that can electrically rewrite data. It has been done. The switching unit 83 is a switch for switching and viewing the video of the program being recorded (the program demodulated by the demodulation unit 20a) and the back program (the program demodulated by the demodulation unit 20b).

Next, the operation of the digital broadcast recording / reproducing apparatus 5 will be described.
When the user operates the remote control device 3 to turn on the digital broadcast recording / playback device 5 and inputs an instruction to the digital broadcast recording / playback device 5 to view, record or play a predetermined program. The remote control signal (in other words, infrared signal) output from the remote control device 3 is received by the remote control signal receiver 13, decoded, and input to the control microcomputer 33. Then, the control microcomputer 33 to which the command is inputted decodes the command, and in order to realize the command, the channel selection unit 12, demodulator 22, TS processing unit 23, MPEG processing unit 24, video processing unit 31, frame The memory 32, recording / playback unit 81, and switching unit 83 are controlled.

  In this modification, the remote control device 3 is used as the user command input means, but the present invention is not limited to this, and the input device 14 provided on the outer wall surface of the digital broadcast recording / playback device 5 is operated. Command may be entered.

  When a viewing command is input from the user, a terrestrial digital broadcast signal is taken into the digital broadcast recording / playback device 5 via the input terminal 11, and the channel selection unit 12 selects an arbitrary desired by the user from the terrestrial digital broadcast signal. One broadcast signal is extracted.

  Thus, one extracted broadcast signal is input to the demodulator 22 and subjected to OFDM demodulation, and from this, the TS processing unit 23 extracts a TS signal corresponding to a program (program) desired by the user.

  The TS signal extracted by the TS processing unit 23 is decoded by the MPEG processing unit 24 and separated into video and audio data, and the video data is output to the video processing unit 31 described later. Data is output to the voice processing unit 15.

Thereafter, the video data output to the video processing unit 31 is sequentially written at predetermined addresses in the frame memory 32. The written video data is sequentially read from a predetermined address and D / A converted, and then input to the recording / playback unit 81. On the other hand, the audio data output to the audio processing unit 15 is D / A converted and then input to the recording / playback unit 81.

  When the user's command is “recording”, the video signal and audio signal input to the recording / playback unit 81 are written to the storage medium 82 and output to the outside via the switching unit 83, and the display device 2. Video display and audio output are performed at. In this case, the switching unit 83 is controlled by the control microcomputer 33 so that the recording / playback unit 81 and the display device 2 are connected.

  When the user command is “playback”, the video recording / playback unit 81 reads out the video signal and the audio signal from the storage medium 82, and outputs them via the switching unit 83. And audio is output. In this case, the switching unit 83 is controlled by the control microcomputer 33 so that the recording / playback unit 81 and the display device 2 are connected.

  When the user's instruction is “viewing the back program”, the video signal and the audio signal selected and demodulated by the channel selection unit 12b, the demodulation unit 20b, the MPEG processing unit 24b, and the video processing unit 31b are switched by the switching unit 83. The video is displayed and the audio is output by the display device 2. In this case, the switching unit 83 is controlled by the control microcomputer 33 so that the video processing unit 31b and the audio processing unit 15b are connected to the display device 2, respectively.

  With this configuration, the display method of the video indicated by the video signal can be set in response to the user's operation based on the video signal indicating the video played back by the recording / playback device 80.

  Note that the recording / playback apparatus for digital broadcasting to which the present invention is applied may have the structure shown in FIG. 13 in addition to the structure described above. In the digital broadcast recording / reproducing apparatus 6, the recording / reproducing apparatus 80 of the digital broadcast recording / reproducing apparatus 5 described above is provided between the image receiving device 30 and the output terminals 17 and 19 connected to the display device 2. On the other hand, it is different in that it is provided between the demodulating means 20 and the MPEG processing unit 24.

  Further, the form of the signal recorded / reproduced by the recording / reproducing apparatus 80 is different. The digital broadcast recording / reproducing apparatus 5 described above targets video signals and audio signals, but the digital broadcast recording / reproducing apparatus 6 is configured to record and reproduce TS signals as they are. With this configuration, multi-sound can be recorded and reproduced at the same time.

  With this configuration, there is an effect that the user can arbitrarily select a display mode regardless of recording / playback / backside program viewing. Further, since the MPEG processing unit 24b, the audio processing unit 15b, the video processing unit 31b, and the frame memory 32b can be omitted, there is an effect that the manufacturing cost of the recording / playback apparatus for digital broadcasting can be reduced.

In the digital broadcast recording / reproducing apparatus 6, the recording / reproducing apparatus 80 is provided between the TS processing unit 23 and the MPEG processing unit 24, but may be provided between the demodulator 22 and the TS processing unit 23. In this case, multi-channel broadcasting and data broadcasting can be recorded and reproduced.
(4) Correspondence with the Present Invention In the embodiment described above, S260 in FIG. 4, S350 and S355 in FIG. 7, and S404, S412, and S428 in FIG. 8 are display method setting means in the present invention.

Further, S250 and S255 in FIG. 4 and S408, S416, and S422 in FIG. 8 are display control means in the present invention.
Further, S410 in FIG. 8 and S502 and S418 in FIG. 10 are video determination means in the present invention.

Also, S310 to S340 in FIG. 7 are attribute detection means in the present invention.
The demodulator 20 is a video generator in the present invention.
The recording / playback apparatus 80 is a video acquisition / playback unit in the present invention.

  The remote control device 3 is a setting command means in the present invention.

Block diagram showing the configuration of a digital broadcast receiver External view of remote control device Explanatory drawing for demonstrating the state by which an image is enlarged and displayed The flowchart which shows the display data read-out process in 1st Embodiment. Explanatory drawing which shows the example of the icon displayed on a display apparatus Explanatory diagram for explaining automatic display selection processing Flow chart showing automatic display selection process The flowchart which shows the display data read-out process in 2nd Embodiment. The flowchart which shows the display data read-out process as a modification of 2nd Embodiment The flowchart which shows the display data read-out process as a modification of 2nd Embodiment Block diagram showing the configuration of a digital broadcast television receiver as a modification The block diagram which shows the structure of the recording / reproducing apparatus for digital broadcasting as a modification The block diagram which shows the structure of the recording / reproducing apparatus for digital broadcasting as a modification

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Digital broadcast receiving apparatus, 2 ... Display apparatus, 3 ... Remote control apparatus, 4 ... Digital broadcast television receiver, 5 ... Digital broadcast recording / reproducing apparatus, 6 ... Digital broadcast recording / reproducing apparatus, 11 ... Input terminal, DESCRIPTION OF SYMBOLS 12 ... Channel selection part, 13 ... Remote control signal receiving part, 14 ... Input device, 15 ... Audio | voice processing part, 16 ... Power supply part, 16a ... Terminal, 16b ... Terminal, 17 ... Audio | voice output terminal, 19 ... Image | video output terminal, 20 ... Demodulating means, 22 ... demodulator, 23 ... TS processing unit, 24 ... MPEG processing unit, 30 ... image receiving device, 31 ... video processing unit, 32 ... frame memory, 33 ... control microcomputer, 43 ... display switching dedicated button, 62 DESCRIPTION OF SYMBOLS ... Display part, 64 ... Speaker, 72 ... Distributor, 80 ... Recording / reproducing apparatus, 81 ... Recording / reproducing part, 82 ... Storage medium, 83 ... Switching part.

Claims (6)

An image receiving device used with a display device connected thereto,
Display control means for displaying on the display device the video indicated by the video signal based on the video signal indicating the video having an aspect ratio of 16: 9 input from the outside;
As a video display method by the display control means, any one of a standard size display method and a display method using an enlarged size obtained by enlarging each of the X axis and the Y axis in the standard size video by 4/3 times is used. Display method setting means for setting a video display method by storing a display size shown in a storage device;
A switching operation reception means for receiving an operation for switching the display method of the video by the display control means to the display method of the standard size or the display method of the enlarged size;
An identification signal for identifying an additional image that has been aspect-converted to an aspect ratio 16: 9 image by adding a non-image area, which is an area where no image exists, to the left and right of the image with an aspect ratio 4: 3. Is added to a video signal input from the outside, the additional video is repeatedly executed while the video signal is input, such as determining that the video indicated by the video signal is the additional video. A determination means;
Display area storage means for storing the aspect ratio of the display area of the display device connected to the image receiving device,
The display method setting means stores the display size indicating the enlarged size when the aspect ratio of 4: 3 is stored by the display area storage means and the additional video determination means determines that the video is an additional video. A display method based on the enlarged size is set by storing in a storage device, and a display size indicating the display method according to the operation received by the switching operation receiving unit is stored in the storage unit, and the display size is displayed. After setting the display method by, the setting state is continued until the setting is changed again.
The display control means is configured to display the video indicated by the video signal on the display device by the display method indicated by the display size stored in the storage device by the display method setting means .
further,
The display method setting means does not change the setting of the display method when it is determined by the additional video determination means that the video is not an additional video, while the enlargement is performed when the additional video determination means determines that the video is an additional video. By changing the display method to the enlarged size by storing the display size indicating the size in the storage device,
The switching operation accepting unit accepts an operation for switching a video display method by the display control unit after the determination by the additional video determining unit is performed,
Also,
The display method setting means stores, in the storage unit, a display size indicating a display method according to an operation received by the switching operation reception means when an aspect ratio of 4: 3 is stored by the display area storage means. An image receiving apparatus that sets a display method according to a display size by storing the image. The display method setting means sets the display method based on the enlarged size by storing a display size indicating the enlarged size in a storage device when the additional video determining means determines that the video is an additional video, Further, when it is determined by the additional video determining means that the video is not an additional video, if the operation is received by the switching operation receiving means, the display size indicating the display method corresponding to the operation is stored in the storage unit. The image receiving apparatus according to claim 1, wherein a display method according to a display size is set. A channel selection unit that extracts an arbitrary broadcast signal from a terrestrial digital broadcast signal input via an antenna;
A demodulator that outputs a TS (Transport_Stream) signal obtained by demodulating the broadcast signal extracted by the channel selection unit;
A decoding processing unit for outputting video data obtained by decoding the TS signal output by the demodulator,
The display control means includes
After the video data output by the decoding processing unit is written in the frame memory for storing the video as data, the video data is read from the frame memory, and the video based on the read video data is displayed on the display device. As well as display
If the display method according to the enlarged size is set by the display method setting means, the video data stored in the frame memory is the video in which the video indicated by the video data is enlarged from the standard size to the enlarged size. In contrast, when the display method is set according to the standard size, the video data stored in the frame memory is read as it is without being converted. The image receiving device according to claim 1 , wherein the image receiving device is an image receiving device. An image receiving device according to any one of claims 1 to 3 ,
A channel selection unit that extracts an arbitrary broadcast signal from a terrestrial digital broadcast signal input via an antenna;
A demodulator that outputs a TS (Transport_Stream) signal obtained by demodulating the broadcast signal extracted by the channel selection unit;
A decoding processing unit for outputting video data obtained by decoding the TS signal output by the demodulator,
The display control means included in the image receiving device includes:
After the video data output by the decoding processing unit is written in the frame memory for storing the video as data, the video data is read from the frame memory, and the video based on the read video data is displayed on the display device. As well as display
If the display method according to the enlarged size is set by the display method setting means, the video data stored in the frame memory is the video in which the video indicated by the video data is enlarged from the standard size to the enlarged size. In contrast, when the display method is set according to the standard size, the video data stored in the frame memory is read as it is without being converted. A tuner characterized by being. Demodulation means for generating a video signal based on a broadcast signal received by an antenna;
A display device having a display area with an aspect ratio of 4: 3;
A receiving device according to any one of claims 1 to 3, a television receiver consisting,
The display control means in the image receiving device is configured to cause the display device to display the video indicated by the video signal generated by the demodulating means by the display method set by the display method setting means. TV receiver characterized by Video playback means for reading the video signal stored in the storage unit and playing back the video indicated by the video signal;
An image receiving device according to any one of claims 1 to 3 , comprising:
The display control means in the image receiving device is configured to cause the display device to display the video indicated by the video signal indicating the video reproduced by the video reproduction means by the display method set by the display method setting means. A playback device characterized by that.

Images