JP2001238299A - Broadcast reception device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a broadcast reception device that can independently adjust a reproduction level of an audio signal of a plurality of channels by each channel in a selected BS digital broadcast program. SOLUTION: The broadcast reception device is provided with a video audio decoder section 2 that decodes a received signal (b) relating to a selected BS digital broadcast program to output video and audio data c, d, a D/A converter 4 that applies D/A conversion to the vide data (c) to provide an output of a video signal (e), a D/A converter 7 that applies D/A conversion to the audio data (d) to provide an output of audio signals e-j of channels configuring a reproduced sound field, channel volume operation sections 8a-8f that independently adjust the reproduction levels of the audio signals e-j outputted from the D/A converter 7, and an entire volume operation section 8g that entirely adjusts the reproduction level of all audio signals k-p adjusted by the adjustment sections 8a-8f, and also with a sound volume control section 8 that can independently adjust the reproduction level of the audio signal of a desired channel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast receiving apparatus for satellite (hereinafter referred to as "BS") digital broadcasting, and more particularly to a reproduction level of an audio signal of a desired channel among audio signals of a plurality of channels relating to a reproduction sound field. Are independently adjustable. Where B
The S digital broadcast is a satellite digital broadcast that can transmit a large number of broadcast programs having multi-channel audio data together with video data, for example, compared to the current BS broadcast.

[0002]

2. Description of the Related Art The main structure of a conventional BS digital broadcast receiving apparatus is as follows. That is, the tuner for receiving the BS digital broadcast signal and the B selected by this tuner
A video / audio decoder for decoding a received signal of the S digital broadcast and outputting video data and audio data, respectively, and a TV receiver for converting the video data output from the video / audio decoder into digital signals. (TV monitor), and D / A conversion of audio data respectively output from the video / audio decoder to convert audio signals of a plurality of channels constituting a reproduction sound field into a reproduction sound field. The D / A converter includes a D / A converter capable of outputting to a plurality of speakers respectively arranged at predetermined positions, and an entire volume for uniformly adjusting the reproduction levels of the audio signals of the plurality of channels.

[0003] In the above-mentioned conventional BS digital broadcast receiving apparatus, the volume balance among the channels of the audio signals of a plurality of channels output from the D / A converter on the audio channel side is set in advance. For this reason, on the receiver side, a reproduction sound field as intended by the program producer could be obtained by operating the above-mentioned overall volume after each channel was mixed.

[0004]

In the conventional BS digital broadcast receiving apparatus having the above-mentioned structure, the volume balance between the channels of the audio signals of a plurality of channels is set in advance. In other words, the volume balance between the channels cannot be adjusted. For this purpose, the selected BS digital broadcast is, for example, a movie-only broadcast channel,
At this time, if you are watching a so-called bilingual broadcast, which is a foreign-language movie without subtitles and dubbing the foreign language into Japanese and broadcasting, compare the volume of the movie's music and sound effects. Some of the voice-over dialogues have a low volume.

[0005] In such a case, the viewer performs an operation of increasing the volume of the volume to make it difficult to hear the difficult-to-hear dialogue. The volume of sounds other than sound and dialogue also increases uniformly. As a result, the sound other than the dialogue becomes abnormally loud, so that the viewer must immediately perform an operation of immediately lowering the volume that has been raised, which is a problem that frequently occurs while watching a movie. Was. In addition, when the volume is excessive, there is a possibility that noise will be generated and bother around the viewer. In view of the above, the present invention has been made in view of the above-mentioned problems, and includes an individual adjustment unit that independently adjusts the reproduction levels of the audio signals of a plurality of channels of a selected BS digital broadcast, and includes an audio signal of a desired channel. The object of the present invention is to provide a broadcast receiving apparatus provided with a volume adjusting means capable of independently adjusting a reproduction level of each channel, so that a viewer can freely and easily adjust a volume balance of each channel. Things.

[0006]

In order to solve the above-mentioned problems, the present invention provides a broadcast receiving apparatus having the following configurations (1) to (3). (1) Decoding means for decoding a received signal related to the selected BS digital broadcast to output video data and audio data, respectively, and D / A converting the video data output from the decoding means and outputting it as a video signal. First
D / A conversion means, D / A conversion of audio data output from the decoding means, and output as audio signals of a plurality of channels constituting a reproduced sound field, (2) an individual adjustment unit for independently adjusting the reproduction level of the audio signals of the plurality of channels respectively output from the D / A conversion means; A broadcast receiving apparatus, comprising: an overall adjustment unit for uniformly adjusting the reproduction level of the audio signal; and volume control means for independently adjusting the reproduction level of the audio signal of the desired channel. (2) The broadcast receiving apparatus according to claim 1, wherein the second D / A converter outputs a 5.1-channel audio signal forming a reproduction sound field, and the volume adjuster includes:
A broadcast receiving apparatus, comprising: an individual adjustment unit that independently adjusts a reproduction level of the 5.1-channel audio signal output from each of the second D / A conversion units. (3) The broadcast receiving apparatus according to claim 2, wherein the 5.1-channel audio signal is an audio signal of 6 channels forming a reproduction sound field, and includes a front left (L) channel and a rear left ( A broadcast receiving apparatus, wherein each of the audio signals is an audio signal of an S1 channel, a front center (C) channel, a front right (R) channel, a rear right (Sr) channel, and a front left bass emphasis (LFE) channel.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A broadcast receiving apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of the broadcast receiving apparatus according to the present invention, and FIG. 2 is a flowchart for explaining the operation of the broadcast receiving apparatus shown in FIG.

As shown in FIG. 1 described later, the broadcast receiving apparatus of the present invention converts a received signal b relating to a selected BS digital broadcast (by a tuner 1 for receiving a BS digital broadcast signal a) (to a video decoder 3 and a video decoder 3). A decoding unit (video / audio decoder unit) 2 for decoding and outputting video data c and audio data d, respectively; and a D / A conversion of the video data c output from the decoding unit 2 to a video signal e. A first D / A conversion means (D / A converter) 4 for outputting as an audio signal, and a D / A conversion of the audio data d output from the decoding means 2 to obtain an audio signal of a plurality of channels constituting a reproduced sound field. a second D / A converter (D / A converter) 7 that outputs the signals as e to j;
A separate adjusting units (channel volume operating units) 8a to 8f for independently adjusting the reproduction levels of the audio signals e to j of the plurality of channels respectively output from the A converting means 7, and individual adjusting units 8a to 8f for each channel. An overall adjustment unit (whole volume operation unit) 8g for uniformly adjusting the reproduction levels of the audio signals k to p of the plurality of channels whose levels have been adjusted, and independently adjusting the reproduction levels of the audio signals of the desired channels. A broadcast receiving apparatus A comprising a volume control means (volume control unit) 8 for enabling
It is.

Further, in the broadcast receiving apparatus of the present invention, in addition to the above-described configuration, the second D / A conversion means 7 converts 5.1-channel audio signals e to j constituting a reproduced sound field. And the individual volume adjusters 8a to 8f independently adjust the reproduction levels of the 5.1-channel audio signals e to j output from the second D / A converter 7, respectively. A broadcast receiving device comprising:

Further, in the broadcast receiving apparatus according to the present invention, in addition to the above-mentioned configuration, the 5.1-channel audio signals e to j are 6-channel audio signals constituting a reproduced sound field. Front center (C) channel, front right (R) channel, rear right (Sr) channel, front left bass enhancement (LFE) channel A broadcast receiving device characterized by being an audio signal.

As shown in FIG. 1, a broadcast receiving apparatus A, which is an embodiment of the broadcast receiving apparatus according to the present invention, comprises a video / audio decoder section 2 having a tuner 1, a video decoder 3 and an audio decoder 6, / A converters 4, 7, channel volume operation units 8a to 8f, and overall volume operation unit 8g
Is provided. In FIG. 1, 5 is a display (TV monitor), 9a to 9f are speakers, 1
0 is a volume controller.

The D / A converter 7 has L, S1,
It has six audio output terminals C, R, Sr, and LFE (output in accordance with the 5.1-channel reproduction audio system). An audio signal e output from an audio output terminal L of the D / A converter 7 is supplied to a speaker 9a via a channel volume operation unit 8a and an overall volume operation unit 8g. The audio signal e relating to the reproduction sound field is an audio signal emitted from the speaker 9a installed on the left side in front of the listening position in the reproduction sound field with respect to the listening position.

The audio signal f output from the audio output terminal Sl of the D / A converter 7 is supplied to a channel volume operation section 8b.
It is supplied to the speaker 9b via the whole volume operation unit 8g. The audio signal f relating to the reproduction sound field is an audio signal emitted from a speaker 9b provided on the left rear side of the listening position in the reproduction sound field with respect to the listening position.

An audio signal g output from an audio output terminal C of the D / A converter 7 is supplied to a speaker 9c via a channel volume operation section 8c and an overall volume operation section 8g. The audio signal g relating to the reproduction sound field is an audio signal emitted from a speaker 9c provided at the center in front of the listening position in the reproduction sound field to the listening position. When the selected BS digital broadcast is, for example, a movie-only broadcast channel, and at this time it is a foreign-language movie without subtitles, and the user listens to a so-called bilingual broadcast in which foreign language dialogue is dubbed into Japanese and broadcasted In
The above-described audio signal g is mainly audio relating to the dialogue that has been dubbed.

The audio signal h output from the audio output terminal R of the D / A converter 7 is supplied to a speaker 9d via a channel volume operation section 8d and an overall volume operation section 8g. The audio signal h relating to the reproduction sound field is an audio signal emitted from the speaker 9d located at the front right of the reproduction position with respect to the listening position in the reproduction sound field.

The audio signal i output from the audio output terminal Sr of the D / A converter 7 is supplied to a channel volume operation section 8e,
It is supplied to the speaker 9e via the whole volume operation section 8g. The audio signal i relating to the reproduction sound field is an audio signal emitted from a speaker 9e provided on the rear right side of the reproduction position with respect to the listening position.

The audio signal j output from the audio output terminal LFE of the D / A converter 7 is
f, the speaker 9f via the whole volume operation unit 8g
Supplied to The audio signal j relating to the reproduction sound field is centered on the listening position in the reproduction sound field, and is provided from a low-frequency dedicated speaker 9f (located between the speakers 9a and 9c) in front of the listening position with respect to the listening position. This is a sound signal that is emitted.

The volume controller 10 is, for example, a remote controller for audio adjustment.
This makes it possible to remotely adjust the volume of each of a.about.8f and the whole volume operation unit 8g.

Next, the audio adjustment operation of the broadcast receiving apparatus A will be described. Here, the TV monitor 5 has already received a BS digital broadcast program, and a menu screen for selecting various settings is already displayed on the screen. In this state, a case is considered in which one of the channel volume operation units 8a to 8f for independently adjusting the reproduction levels of the audio signals e to j of the plurality of channels is adjusted to operate the volume balance of each channel.

As shown in FIG. 1, a BS digital broadcast signal a is input to a tuner 1 and a video is
, And then D / A converted by the D / A converter 4 to output a video signal to the TV monitor 5. The audio is decoded by the audio decoder 6 and then D / A converted by the D / A converter 7. Then, after the reproduction level of the audio signal of the desired channel is independently adjusted by the volume control unit 8 including the channel volume operation units 8a to 8f and the whole volume operation unit 8g, the speaker 9
a to 9f are output as audio signals.

At this time, when the volume control screen is selected by using the cursor key on the menu screen on the screen of the TV monitor 5 (step Sll in FIG. 2), the respective volume setting screens related to the channel volume operation sections 8a to 8f are displayed. Called (not shown). There are pictures of six speakers 9a-9f. And the volume controller 10
After the speaker is selected by the cross key, the respective setting values of the channel volume operation sections 8a to 8f are set by the volume key according to the viewer's preference (step S in FIG. 2).
12).

Then, the volume control of the channel volume control units 8a to 8f changes. As a result, it is possible to determine the volume balance that suits the viewer's preference (step S13 in FIG. 2). Also, the overall volume can be controlled by operating the gain of the overall volume controller 8g.
The volume of audio signals of all channels supplied to the six speakers 9a to 9f can be varied.

As described above, according to the broadcast receiving apparatus A,
The volume of each channel of the audio signal can be easily operated, and the viewer can enjoy the program as desired with a desired volume balance. More specifically, when the above-mentioned dialogue is difficult to hear by adjusting the channel volume operation unit 8c which is the center channel volume, the volume only for the dialogue (the volume control unit 8c of the channel volume operation unit 8c) can be easily controlled by the volume controller 10 which is the remote control. By simply increasing the volume, it is possible to eliminate the annoyance when it is difficult to hear what is being said as in the past. In addition, when the whole volume (volume of the whole volume operation device 8g) is increased as in the past, sound effects such as explosion sounds other than the speech become larger and the noise is increased, and the important speech is buried in the background sound and can be heard. Can be prevented beforehand.
You can watch broadcast programs comfortably.

[0024]

As described above, the broadcast receiving apparatus of the present invention is provided with an individual adjustment unit for independently adjusting the reproduction levels of the audio signals of a plurality of channels of the selected BS digital broadcast, and the audio signals of the desired channels are provided. Is provided with volume control means that can independently adjust the reproduction level of each channel, so that the viewer can freely and easily adjust the balance of the volume of each channel, and it is difficult to hear the sound of a specific channel during viewing. The viewing state can be prevented beforehand.

[Brief description of the drawings]

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

FIG. 2 is a flowchart illustrating an operation of the broadcast receiving device.

[Description of Signs] 1 Tuner 2 Video / audio decoder unit (decoding means) 3 Video decoder 4 D / A converter (first D / A conversion means) 6 Audio decoder 7 D / A converter (second D / A) A conversion unit) 8 Volume control unit (volume adjustment unit) 8a to 8f Channel volume operation unit (individual adjustment unit) 8g Overall volume operation unit (entire adjustment unit) A broadcast receiving device a BS digital broadcast signal b received signal c video data d Audio data e Video signal ej, k-p Audio signal L, S1, C, R, Sr, LFE channel

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 7/08 H04N 7/20 630 7/081 7/08 101 7/20 630 F term (reference) 5C026 DA25 5C063 AB03 AB05 AC01 AC06 CA20 DA05 DA13 DB10 5C064 DA06 5D062 CC01 5K061 AA08 BB07 BB10 CC00 CC39 FF11

Claims (3)

[Claims] 1. A decoding means for decoding a received signal related to a selected BS digital broadcast and outputting video data and audio data, respectively, and D / A converting the video data output from the decoding means as a video signal. First D / A conversion means for outputting; and second D / A conversion means for performing D / A conversion on audio data output from the decoding means and outputting the audio data as audio signals of a plurality of channels constituting a reproduced sound field. An individual adjustment unit for independently adjusting the reproduction levels of the audio signals of the plurality of channels respectively output from the second D / A conversion means; and a plurality of the individual levels adjusted by the individual adjustment unit for each channel. An overall adjustment unit for uniformly adjusting the reproduction level of the audio signal of the channel, wherein the reproduction level of the audio signal of the desired channel can be independently adjusted. A broadcast receiving apparatus comprising: a volume adjusting unit. 2. The broadcast receiving apparatus according to claim 1, wherein the second D / A converter constitutes a reproduced sound field.
A one-channel type audio signal is output, and the volume adjustment unit includes an individual adjustment unit that independently adjusts a reproduction level of the 5.1-channel audio signal output from the second D / A conversion unit. A broadcast receiving apparatus. 3. The broadcast receiving apparatus according to claim 2, wherein the 5.1-channel audio signal is an audio signal of 6 channels forming a reproduction sound field, a front left (L) channel, and a rear channel. Left (Sl) channel, front center (C)
Channel, front right (R) channel, rear right (Sr)
A broadcast receiving apparatus, wherein each of the audio signals is a sound signal of a channel and a bass enhancement (LFE) channel.