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JPH11215588

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Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPH11215588
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
apparatus for outputting audio divided into a plurality of channels, and more particularly to an
audio output system for connecting a speaker to the apparatus.
[0002]
2. Description of the Related Art As a medium for reproducing music, LP records and tapes have
been used since ancient times, and CDs appeared 10 years ago and dominate the market.
Recently, DVDs have increased in recording capacity to about seven times that of CDs, and have
made it possible to simultaneously play back long-time programs such as movies and to play
music by various systems simultaneously. While the music reproduction of this medium is one
system of left and right two-channel stereo, in the case of DVD, linear PCM (Pulse Code
Modulation) and MPEG (Motion) are utilized by utilizing the fact that the recording capacity has
greatly increased. Various systems such as Picture Experts Group -1, 2 and Dolby AC-3 are
installed, and the number of channels is 5.1 channels in addition to 2 channels on the left and
right, and 7.1 if necessary. A channel is prepared [see, for example, the Journal of the Institute of
Image Information and Television Engineers, vol. 51, No. 7, pages 25 to 29 (July 1997)].
[0003]
5.1 channels are for SW (subwoofer drive) in 5 channels of Lch (left channel), Rch (right
channel), Cch (center channel), LSch (rear left surround channel) and RSch (rear right surround
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channel) Low-frequency dedicated channel) as a 0.1 channel.
[0004]
Therefore, the DVD reproducing apparatus is provided with six audio output terminals, and the
speakers are connected to each other by wire connections.
[0005]
The relationship between the six output terminals and the corresponding speakers is fixed, and
when, for example, the user intentionally interchanges the left and right to create a desired sound
field, the terminals are connected one by one. It is necessary to perform troublesome procedures
such as changing or changing the position of the speaker.
[0006]
In addition, when there are as many as six terminals, the connection is very troublesome,
especially for general users, and it is also possible for the connection to be incorrect.
[0007]
A music playback system (surround system) that applies signal processing to 2-channel signals to
create 4-channels, 5-channels, etc. in a pseudo manner even in 2-channel stereo systems such as
LP records and CDs up to now Also in this case, there are problems with the same connection as
described above.
[0008]
The object of the present invention is to solve the above-mentioned problems of the prior art and
to provide a novel audio output system which enables arbitrary interconnection of both without
changing the connection between the output terminal of the playback device and the speaker. It
is to do.
[0009]
The object of the present invention is to provide a selector for selecting one of a plurality of
output terminals connected to a speaker for each channel, and a user input for outputting a
user's instruction as an instruction signal. The problem can be solved effectively by using a unit,
a control unit that controls terminal selection of the selector in accordance with the instruction
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signal, and a display device for displaying a channel and a speaker selected by the user on the
screen.
By adopting such a means, it is possible to select the output terminal desired by the user for each
channel, and it is possible to avoid the trouble of connecting terminals and changing the layout of
speakers.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION A method of connecting an audio output
terminal and an audio reproduction apparatus according to the present invention will be
described in more detail with reference to the embodiments of the invention shown in the several
drawings.
The same symbols in FIG. 1 to FIG. 9 represent the same or similar items.
[0011]
The present invention has been applied to a DVD reproducing apparatus for reproducing 5.1
channel (6 independent channels) audio.
In FIG. 1, reference numeral 7 denotes a disc reproducing unit for extracting a signal from the
disc using a disc rotating device and an optical pickup (both not shown), and 8 denotes an output
signal of the disc reproducing unit 7 to process an image signal and A signal output unit that
outputs an audio signal, 10 is a selector that switches connection destinations of 6-channel audio
signals output by the signal output unit 8, 9a to 9f are 6 output terminals of the audio signal, 111 to 11 6 are six speakers connected to the output terminals 9a to 9f, 12 is a display device for
displaying an image signal output from the signal output unit 8, 13 is a remote control (remote
Control unit) 14 receives a signal generated by user's instruction of the remote control 13
through the infrared ray 15, and outputs a received signal as an instruction signal; A control unit
for controlling the operation of the disk reproducing unit 7, the signal output unit 8 and the
selector 10 according to an instruction signal output from the input unit 14. A storage unit 17 of
the control unit 16 is other than the speaker 11 and the display unit 12. Shows a DVD playback
apparatus comprising each part of
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[0012]
The storage unit 17 stores a selection processing program 171 in which the execution procedure
of the control unit 16 is described, and further, a data area 172 for storing address data
indicating the position on the disc of the selection audio signal is provided.
The selection audio signal is a dedicated signal used for terminal selection, and the address data
can be acquired from the disk at the start of disk reproduction.
[0013]
Subsequently, the details of the structure of the selector 10 are shown in FIG.
Reference numerals 101a to 101f denote switch circuits for transmitting an audio signal to any
one of the terminals 19a to 19f for each channel.
Furthermore, the terminals 19a to 19f are connected to the output terminals 9a to 9f
respectively in order. Each switch circuit performs terminal selection under the control of the
control unit 16.
[0014]
Next, the button arrangement of the remote control 13 is shown in FIG. Reference numeral 31
denotes a selection decision button including an arrow button for selecting an item and a
decision button for deciding the selected item. The decision button has an indication of ENTER.
The user moves a plurality of items displayed on the screen to be described later in the direction
of the arrow button, and when the item to be adopted is reached, the center determination button
is pressed to determine that item as adoption. On the screen, the brightness of the selected item
is increased, and the item whose brightness is increased is moved according to the operation of
the arrow button.
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[0015]
The remote control 13 further includes a volume control button 33 for adjusting the volume of
the speaker 11, a power button for turning on / off the power of the DVD reproducing apparatus
18, and a number button 34 used for various operations.
[0016]
The structure of the speaker 11 is shown in FIG.
The figure is a front view of the speaker 11 and the selection display lamp 41 is provided on the
front of the speaker 11. The connection terminal of the speaker 11 is on the back side. When the
selection item is a speaker, the selection display lamp 41 lights up when the speaker is selected
by the selection determination button 31 of the remote controller 13.
[0017]
Hereinafter, processing executed by the control unit 16 based on the selection processing
program 171 stored in the storage device 17 in accordance with an instruction from the remote
control 13 will be described. The description will be made by taking the case of correcting a
speaker connection error as an example.
[0018]
When the user loads a disc into the DVD player 18 and presses the power button 32 of the
remote controller 13, the disc player 7 is operated to start playing the disc. At that time, first,
address data indicating the position on the disc of various information recorded on the disc is
taken out from the disc reproducing unit 7, so the same data is stored in the data area 172 of the
storage device 17. At the same time, the selection screen shown in FIG. 5 is displayed on the
display device 12. Each channel of 5.1 channels is divided and displayed by surrounding the
viewing position 51 in the screen 50.
[0019]
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Among various information recorded on the disc, there is an audio signal for selection. When the
voice signal is taken out based on the address data, the voice signal of the corresponding channel
is independently output.
[0020]
Since the present embodiment is directed to a 5.1 channel system, channels 1 to 6 shown in FIG.
2 correspond to Lch, Cch, Rch, RSch, LSch, and SW, respectively. The speakers arranged for audio
output of Lch, Cch, Rch, RSch, LSch and SW are # 1 speaker 11-1 to # 6 speaker 11-6 in order,
and if there is no wiring error, The speakers are sequentially connected to the output terminals
9a to 9f.
[0021]
Now, as an example of the erroneous connection, although the speaker to be connected to the
output terminal 9a for Lch is the # 1 speaker 11-1, the # 4 speaker 11-4 is erroneously
connected to the output terminal 9a, It is assumed that the one speaker 11-1 is connected to the
output terminal 9c.
[0022]
The user operates the selection determination button of the remote controller 13 to move the
channel in which the luminance is increased, and selects Lch.
Confirm that the brightness of Lch has risen, and then press the ENTER button.
[0023]
At this time, the address data of the Lch selected audio signal is read out from the data area 172,
and based on this data, the Lch selected audio signal is extracted from the disc reproducing unit
7 and sent to the selector 10. The switch circuit 101a for the channel 1 of the selector 10, that is,
for the Lch initially selects the terminal 19a, and therefore, the selection audio for Lch from the #
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4 speaker 11-4 connected to the output terminal 9a is As it comes out, the selection display lamp
41 lights up. There is no sound from the other speakers.
[0024]
When the enter button is pressed, the display screen 50 is changed to a screen for speaker
selection shown in FIG. The numbers in the screen correspond to the channel numbers shown in
FIG. In the changed screen 50, since the Lch is selected first, the luminance of the display portion
1 corresponding to the channel number is increased, and the switch circuit 101a is to be
controlled. The selection display lamp 41 of the # 4 speaker 11-4 is on, and the Lch selection
audio is output from the same speaker.
[0025]
The user operates the selection determination button 31, and the selection display lamp 41 of
the # 1 speaker 11-1 is turned on, and the selection is continued until an audio of Lch is output
therefrom. Such a selection is made when the luminance of a part of the display of No. 3 is
increased, that is, when the switch circuit 101a selects the connected output terminal 9c of the #
1 speaker 11-1 and thus the terminal 19c. The user then presses the enter button.
[0026]
Thus, the switch circuit 101a is controlled to select the closing switch in conjunction with the
selection by the user instruction. When the enter button is pressed, the terminal selection ends.
That is, the switch circuit 101a selects and fixes the terminal 19c and hence the output terminal
9c. Since the selection is completed, the selection display lamp 41 of the # 1 speaker 11-1 is
turned off. FIG. 2 shows a state in which the switch circuit 101a selects the terminal 19c.
[0027]
By the above operation, the correct # 1 speaker 11-1 is selected for Lch, and the correction of
the connection error is completed. The same operation is performed for the other channels, and
the correction of the entire connection error is completed.
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[0028]
The above is the case of correcting the wiring error, but even when the speaker connection is
intentionally changed to create a desired sound field, it is needless to say that the speaker can be
switched by the same operation. .
[0029]
When the confirmation of the speaker corresponding to the channel is performed only by the
selection sound, a general speaker without the selection display lamp 41 may be used.
[0030]
On the contrary, when the confirmation of the speaker is performed only by the selection display
lamp 41, the reproduction of the selection audio signal from the disc may be omitted.
[0031]
Each button of the remote control may be disposed on the operation surface of the playback
device, and further, the display device for displaying the screen 50 of FIGS. 5 and 6 is not only
used as a device for displaying an image, Alternatively, a small, plate-like display device for
displaying characters and patterns, such as a liquid crystal display device, may be used, or may
be attached to a remote control or a playback device.
[0032]
In the present embodiment, six channels of the 5.1 channel system are selected, but the present
invention is not limited to this, and it is possible to select five channels excluding SW, for
example. The present invention is applicable to other systems, for example, a multiple channel
system such as 5 channels, 4 channels, etc., and the same effect can be obtained.
[0033]
Further, the reproducing apparatus is not limited to the DVD reproducing apparatus, and can be
applied to an apparatus for reproducing audio signals of other plural channels, for example, a
music reproducing system for creating and providing 4 channels or 5 channels in a pseudo
manner. It is.
[0034]
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According to the present invention, it is possible to select the output terminal desired by the user
for each channel without changing the connection between the playback device and the speaker,
and thus the connection of terminals and the arrangement of the speaker It is possible to avoid
trouble such as replacement.
[0035]
Brief description of the drawings
[0036]
1 is a configuration diagram for explaining an embodiment of the audio reproduction system
according to the present invention.
[0037]
The circuit diagram for demonstrating the selector of the FIG. 2 Example.
[0038]
3 is a button layout diagram for explaining the remote control of the embodiment.
[0039]
The front view for demonstrating the speaker of the FIG. 4 Example.
[0040]
5 is a diagram showing an example of a selection screen for selecting an audio channel.
[0041]
6 is a diagram showing an example of a selection screen for selecting a speaker.
[0042]
Explanation of sign
[0043]
7 disc playback unit 8 signal output unit 9 output terminal 10 selector 11 speaker 12 display
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device 13 remote control 14 user input unit 16 control unit 17 storage device 18: DVD playback
device, 19: terminal, 31: selection determination button, 41: selection display lamp, 50: selection
screen, 101: switch circuit, 171: selection processing program, 172: data area.
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