JP2002354364A - Television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a television receiver of good operability in which a user can be urged to perform the operation for altering the setting of a video output appropriately by awaking the user to switching of video regulation in digital broadcast. SOLUTION: The receiver 1 displays a video indicative of a switched video regulation until a specified time elapses after the video regulation of a receiving digital broadcast is switched. Consequently, a user can be surely awaked to switching of the video regulation of a receiving digital broadcast. Since the user can perform the operation for altering the setting of a video output appropriately, such a problem as the user misses the overall video can be eliminated and the operability can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver applied to a television receiver for receiving digital broadcasting.

[0002]

2. Description of the Related Art Conventionally, there has been a television receiver for receiving digital broadcasting (hereinafter, simply referred to as a receiver). Digital broadcasting video standards include high-resolution HDT
V (High Definition Televis)
ion) system and a low-resolution SDTV (Standard)
d Definition Television) system. The HDTV system has 1035 effective scanning lines, an image aspect ratio (aspect ratio) of 9 to 16, and an SDTV.
The system uses 483 effective scanning lines and an image aspect ratio of 3 to 4.

[0003] Further, a digital broadcast receiving apparatus includes H
A video output setting function that cuts both ends of an image according to the DTV system, enlarges a predetermined area, and outputs the image as an image having an aspect ratio of 3 to 4, and an aspect ratio by cutting the top and bottom of an image according to the SDTV system. Some have a video output setting function of outputting as 9:16 video (Japanese Patent Application Laid-Open Nos. 1-151887 and 5-244525).

[0004]

However, in the digital broadcasting, the video standard (HD)
(TV system, SDTV system). For example, an HDTV program is broadcast after an SDTV program, or an STV program is broadcast after an HDTV program.
A program of the DTV system was sometimes broadcast.

[0005] On the other hand, when the video standard of the digital broadcast being received is switched, the digital broadcast receiving device outputs a video according to the video output setting at that time. For this reason, the user may not notice that the video standard of the digital broadcast being received has changed.

For example, if the video output settings for the HDTV system and the SDTV system are both set to output a video with an aspect ratio of 3: 4, even after the video standard of digital broadcasting is switched from the SDTV system to the HDTV system. , The image having the aspect ratio of 3 to 4 is continuously displayed. For this reason,
The user does not notice that the video standard of digital broadcasting has changed. At this time, the receiving apparatus outputs the HDTV system video at an aspect ratio of 3: 4 by cutting both ends of the video or enlarging the specified video area. Therefore, the user has to change the video output setting when viewing the entire video. However, since the user is not aware that the video standard has been switched, the user does not change the video output setting and eventually misses the entire video.

When the video output settings for the HDTV system and the SDTV system are both set to output a video having an aspect ratio of 9:16, even after the video standard for digital broadcasting is switched from the HDTV system to the SDTV system. The image having the aspect ratio of 9:16 is continuously displayed. For this reason, the user does not notice that the video standard of digital broadcasting has been switched. At this time, the receiving apparatus outputs the SDTV video with an aspect ratio of 9:16 by cutting the top and bottom of the video. Therefore, the user must change the video output settings when viewing the entire video.
However, as in the above-described example, since the user is not aware that the video standard has been switched, the user does not perform the operation of changing the video output setting, and eventually misses the entire video.

[0008] As described above, the conventional digital broadcast receiving apparatus cannot reliably make the user aware that the video standard of the digital broadcast being received has changed. For this reason, there is a problem that the user cannot perform the operation of changing the video output setting properly and the entire video is missed, and the operability is not good.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a television receiver with good operability that enables a user to appropriately perform an operation of changing a video output setting by making a user surely notice the change of a video standard in digital broadcasting. Is to provide.

[0010]

A television receiver according to the present invention has the following arrangement to solve the above-mentioned problems.

(1) In a television receiver for receiving a digital broadcast, a video standard discriminating means for discriminating whether a video standard of a received digital broadcast is a high resolution or a low resolution; Output means for outputting a video signal indicating that switching of the video standard of the received digital broadcast has been detected by the determination means.

In this configuration, it is determined by the video standard determining means whether the video standard of the received digital broadcast is high resolution or low resolution. When the video standard of digital broadcasting is switched from high resolution to low resolution, or from low resolution to high resolution, the output means outputs a video signal indicating that. Therefore, the change of the video standard of the digital broadcast signal is displayed on the display device connected to the television receiver. As a result, the user can be surely notified of the change of the video standard in digital broadcasting. Therefore,
The user can appropriately change the video output setting.

(2) The output means is a means for outputting a video signal obtained by adding a video indicating that the video standard has been switched to a received digital broadcast video.

With this configuration, the received digital broadcast image is not interrupted.

(3) The output means outputs a video signal for a certain period of time after detecting that the video standard of the received digital broadcast has been switched.

In this configuration, even if the user does not perform any special operation, only the video of the digital broadcast received after a predetermined time is displayed.

(4) The high-resolution video standard has an image size aspect ratio of 9:16, and the low-resolution video standard has an image size aspect ratio of 3: 4.

The digital broadcasting video standard includes 1035 effective scanning lines and a screen aspect ratio (aspect ratio) of 9 to 16.
HDTV (High Definition)
ion Television) method and effective scanning line 4
83 low-resolution SDTVs with a screen aspect ratio of 3 to 4.
(Standard Definition Telephone
Vision) method.

(5) The video standard discriminating means is a means for discriminating the video standard from an image size contained in a received digital broadcast video signal.

In this configuration, since the video standard is determined from the image size included in the digital broadcast video signal, the configuration for determining the video standard is simple, and the cost of the apparatus main body can be sufficiently suppressed.

[0021]

FIG. 1 is a block diagram showing a configuration of a receiving apparatus according to an embodiment of the present invention. The receiving apparatus of this embodiment is a digital system, for example, an ATSC
(Advanced Television Stan
This is a receiving device that receives television broadcasts of the “dars Committee” system (hereinafter, simply referred to as digital broadcasts).

The control section 2 controls the operation of the main body of the receiving apparatus 1. The receiving unit 3 extracts a broadcast signal of a program broadcast on a selected channel from digital broadcasts received by the antenna 10. The receiving unit 3 includes:
A demultiplexer for separating multiplexed data and a decoder for decoding compressed video and audio are provided. The remote control receiver 4 receives a control signal transmitted from a remote controller (not shown) by infrared rays or radio waves, for example, a channel switching signal or a video output setting signal described later. The output unit 5 outputs the video signal and the audio signal received and decoded by the receiving unit 3. The display device 11 displays a screen (video) based on the video signal output from the output unit 5 and outputs audio based on the audio signal. The operation unit 6 includes keys to be operated when performing a channel switching operation, a video output setting described later, and the like.

As is well known, a high definition HDTV (High Definition) is known as a digital broadcasting video standard.
n Television) method and low resolution SDT
V (Standard Definition Tel)
evolution) method. The HDTV system uses 1035 effective scanning lines and the screen aspect ratio (aspect ratio) 9: 1.
6, the SDTV method has 483 effective scanning lines and the aspect ratio of the screen is 3 to 4.

The receiving apparatus 1 according to the present embodiment, when the video standard of digital broadcasting is the HDTV system,
2 are shown in FIGS. 2 (A), (B),
A video output setting function for setting any of the settings shown in FIG. FIG. 2A is a display example of a screen when the video output setting is to display the entire received digital broadcast video at an aspect ratio of 9:16. FIG. 2B is a display example of a screen in a video output setting in which both ends of a received digital broadcast video are cut and a video having an aspect ratio of 3 to 4 is displayed. FIG. 2C is a display example of a screen when an area surrounded by a broken line in FIG. 2A is enlarged and an image output setting for displaying an image with an aspect ratio of 3 to 4 is set.

When the image output setting is a setting for displaying the image shown in FIG. 2A, the broken line shown in the figure is not displayed. This broken line is described for explaining the image output setting for displaying the image shown in FIG. In the video output setting for displaying the video shown in FIG. 2C, the user can freely set the area to be enlarged (the area surrounded by the broken line in FIG. 2A).

When the video standard of the digital broadcast is the SDTV system, the receiver 1 of this embodiment sets the display of the video on the display device 11 to one of those shown in FIGS. 3A and 3B. It has a video output setting function.
FIG. 3A is a display example of a screen when the video output setting is such that the entire video of the received digital broadcast is displayed with an aspect ratio of 3 to 4. FIG. 3B is a display example of a screen when the video output setting is such that the top and bottom of the received digital broadcast video is cut off and a video having an aspect ratio of 9:16 is displayed.

The receiving device 1 converts the received video signal into a video signal for displaying a video according to the video output setting set for the video standard of the digital broadcast being received, and outputs the video signal. Output from 5

Further, the receiving apparatus 1 can individually set a video output setting at the time of HDTV reception and a video output setting at the time of SDTV reception. The control unit 2 includes a video output setting at the time of HDTV reception,
A non-volatile memory is provided as a storage unit for storing video output settings at the time of reception of the DTV system. The video output setting can be performed by a predetermined input operation on the operation unit 6 or a remote controller (not shown).

Hereinafter, the operation of the receiving apparatus 1 of this embodiment will be described. FIG. 4 is a flowchart showing the operation of the receiving device of this embodiment. Note that when a channel switching operation, a video output setting changing operation, or the like is performed on the operation unit 6 or a remote control device (not shown), the process is executed by an interrupt process.

The receiving apparatus 1 performs a receiving process of receiving digital broadcasts (video signals and audio signals) of the channel selected by the receiving section 3 (s1). At this time, the receiving unit 3 separates the multiplexed data by the demultiplexer, and outputs the video signal compressed by the decoder,
And decode the audio signal. The process of receiving digital broadcast according to s1 is well known and will not be described here.

The receiving device 1 acquires the image size from the video signal extracted in s1 (s2), and determines whether the video standard of the digital broadcast being received is the HDTV system or the SDTV system (s3). .

As is well known, a digital broadcast video signal contains data indicating the image size. s2 is
This is a process for acquiring data indicating the image size. Also, s3 indicates that the aspect ratio of the image size acquired in s2 is 9: 1.
If the number is 6, the HDTV method is determined, and if the value is 3 to 4, the SDTV method is determined. As described above, the configuration for determining the video standard of the received digital broadcast is simple, and the cost of the apparatus main body can be sufficiently suppressed.

Next, the receiving apparatus 1 determines whether or not the video standard of the digital broadcast being received has been switched (s4). In s4, a comparison is made between the previous determination result and the current determination result to determine whether the video standard has been switched. If it is determined in s4 that the video standard has not been switched, it is determined whether a preset time (several seconds) has elapsed since the previous determination that the video standard was switched (s5). If it is determined at s5 that the predetermined time has elapsed, the video signal received at s1 is converted into a video signal according to the video output setting set for the video standard determined at s3 (s6). The video signal converted in s6 and the audio signal received in s1 are output from the output unit 5 (s
7) Return to s1.

Therefore, when a certain period of time has passed since the switching of the video standard of the digital broadcast, the display device 11 sets the video output setting according to the video output setting set for the digital broadcast received in s1. FIG.
The video of the digital broadcast received at s1 is displayed in one of the display modes shown in (A), (B), (C) or FIGS. 3 (A), (B).

On the other hand, if it is determined in s4 that the video standard has been switched, or if it is determined in s5 that the predetermined time has not elapsed, the video signal received in s1 is set to the video standard determined in s3. The video signal is converted into a video signal according to the video output setting (s8). The process related to s8 is the same as the process related to s6. Receiving device 1
Adds a video signal for displaying the video standard determined in s3 to the video signal obtained in s8 (s9). Then, the video signal obtained in s9 and the audio signal received in s1 are output from the output unit 5 (s10), and the process returns to s1.

When the video standard of digital broadcasting is switched, or when a predetermined time has not passed since the switching of the video standard of digital broadcasting, the display device 11
In accordance with the video output setting set for the video standard of the digital broadcast received in s1, FIG.
The video of the digital broadcast received in s1 is displayed in one of the display modes shown in (B), (C) or FIGS. 6 (A), (B).

FIG. 5 shows that the video standard is changed from SDTV to HDT.
It is a display example when a fixed time has not elapsed after switching to the V method. FIG. 5 (A) shows the entire video as an aspect ratio of 9
It is an example of a display of a screen when it is a video output setting displayed by pair 16. FIG. 5B is a display example of a screen when the video output setting is such that both ends of the video are cut and a video having an aspect ratio of 3 to 4 is displayed on the entire screen of the display device 11. FIG.
FIG. 5C is a display example of a screen when the area surrounded by the broken line in FIG. 5A is enlarged and the image output setting is to display an image having an aspect ratio of 3 to 4 to fill the screen of the display device 11.

FIG. 6 shows a display example when a predetermined time has not passed since the video standard was switched from the HDTV system to the SDTV system. FIG. 6A is a display example of a screen when the video output setting is such that the entire video is displayed at an aspect ratio of 3: 4. FIG. 6B is a display example of a screen when the video output setting is such that the top and bottom of the video are cut and a video having an aspect ratio of 9:16 is displayed.

As shown in FIG. 5 and FIG. 6, the receiving apparatus 1 according to this embodiment operates until the fixed time elapses after the video standard of the received digital broadcast is switched, regardless of the video output setting at that time. A video signal for displaying the video standard switched to the upper right of the screen of the display device 11 is output. As a result, the user can be reliably made aware that the video standard for digital broadcasting has been switched.
In addition, the video of the received digital broadcast is not interrupted. Therefore, the user can appropriately change the video output setting, and the operability can be improved without a problem that the user misses the entire video.

Since the switched video standard is displayed on the display device 11, the video standard is changed to the HD standard.
It is possible for the user to accurately recognize whether the mode has been switched to the TV mode or the SDTV mode.

Further, when a certain period of time has elapsed since the switching of the video standard of the digital broadcast, the display returns to the normal display (the display mode shown in FIG. 2 or 3). Therefore, the user does not need to perform a special operation to return the display, and thus the operability is not reduced.

In the above embodiment, when the video standard of the digital broadcast being received is switched, the video standard that has been switched for a certain time is displayed. The video standard of the received digital broadcast may be displayed for a certain period of time even when the operation power supply of the apparatus main body is turned on.

[0043]

As described above, according to the present invention, the user can be reliably made aware that the video standard of the digital broadcast being received has been switched. Therefore, the user can appropriately perform the operation of changing the video output setting, and the operability can be improved without any problem such as the user missing the entire video.

In addition, the video of the received digital broadcast is not interrupted.

Since the display is returned to the normal display after a lapse of a certain period of time after the video standard of the received digital broadcast is switched, the user does not have to perform any special operation to return the display. . Therefore, operability is not reduced.

Further, since the video standard is determined from the image size included in the video signal of the digital broadcast, the configuration for determining the video standard is simple, and the cost of the apparatus main body can be sufficiently suppressed. .

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a receiving device according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a display example of a video image displayed on a display device connected to the receiving device according to the embodiment of the present invention.

FIG. 3 is a diagram illustrating a display example of an image displayed on a display device connected to the receiving device according to the embodiment of the present invention.

FIG. 4 is a flowchart illustrating an operation of the receiving apparatus according to the embodiment of the present invention;

FIG. 5 is a diagram showing a display example of an image displayed on a display device connected to the receiving device according to the embodiment of the present invention.

FIG. 6 is a diagram illustrating a display example of an image displayed on a display device connected to the receiving device according to the embodiment of the present invention.

[Explanation of symbols]

 1-Receiving device 2-Control unit 3-Receiving unit 4-Remote control receiving unit 5-Output unit 6-Operation unit 10 Antenna 11-Display device

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yusuke Nishida 7-7-1 Nakagakiuchi, Daito-shi, Osaka Funai Electric Co., Ltd. F-term (reference) 5C025 BA01 BA02 BA11 BA18 BA28 CA09 CB01 DA01 DA10 5C063 AB03 BA06 BA14 CA23 CA25 DA01

Claims (6)

[Claims] 1. A television receiver for receiving a digital broadcast, wherein the video standard of the received digital broadcast is a high resolution of 9:16 of the image size, or the aspect ratio of the image size is 3: 1. A video standard discriminating means for discriminating the low resolution of the pair from the image size included in the video signal, and detecting that the video standard of the digital broadcast received by the video standard discriminating means has been switched. A television receiver comprising: output means for outputting a video signal obtained by adding a video indicating that the video standard has been switched to a video of a digital broadcast being received for a predetermined time. 2. A television receiver for receiving a digital broadcast, comprising: a video standard determining unit for determining whether a video standard of a received digital broadcast is a high resolution or a low resolution; An output means for outputting a video signal indicating that the video standard of the digital broadcast being received is switched by the means. 3. The television receiver according to claim 2, wherein said output means outputs a video signal obtained by adding a video indicating that the video standard has been switched to a received digital broadcast video. . 4. The output means, after detecting that the video standard of the received digital broadcast has been switched,
3. A video signal indicating the fact is output for a predetermined time.
Or the television receiver according to 3. 5. The high-resolution video standard has an image size aspect ratio of 9:16, and the low-resolution video standard has an image size aspect ratio of 3: 4. The television receiver according to any one of the above. 6. The television according to claim 2, wherein said video standard determining means is a means for determining said video standard from an image size included in a video signal of a digital broadcast being received. John receiver.