close

Вход

Забыли?

вход по аккаунту

?

DESCRIPTION JP2001216132

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
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 JP2001216132
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
information processing apparatus, and is suitably applied to an information processing apparatus
which processes an audio signal supplied from a predetermined sound source and outputs the
signal to the outside.
[0002]
2. Description of the Related Art Some conventional personal computers are designed to
reproduce an audio CD mounted in a built-in CD-ROM drive and output it through a speaker or
the like.
[0003]
However, in such a personal computer, the operating system must first be started even if the
functions of other personal computers are merely reproduced by merely reproducing the audio
CD, which is convenient to use. There was a problem that it was bad.
[0004]
Further, in such a personal computer, there is a problem that the audio signal is deteriorated
because the audio signal is output through the sound chip of the personal computer.
[0005]
10-04-2019
1
The present invention has been made in consideration of the above points, and an object of the
present invention is to propose an information processing apparatus in which the usability of the
audio function is improved and the deterioration of the audio signal is prevented.
[0006]
In order to solve such problems, in the present invention, a first digital audio signal is read out
from a predetermined digital sound source and output, and / or the first digital audio signal is
used as a first While performing desired information processing in accordance with a basic
program and a reproducing unit that converts analog sound signals and outputting them, the first
analog sound signal output from the reproducing unit is converted into a second digital sound
signal and output Information processing means, selection means for selectively selecting and
outputting the first digital audio signal or the second digital audio signal, and the information
processing means operable independently of the information processing means An output
control means is provided which controls the selecting means to select and output the first digital
audio signal when not.
[0007]
When the information processing means is not activated, the output control means controls the
selection means to select and output the first digital audio signal, whereby only the audio
function in the information processing apparatus is used. The information processing apparatus
can be started at high speed, and usability can be improved.
[0008]
In the present invention, when the information processing means is activated, the output control
means controls the selecting means to select and output either the first digital audio signal or the
second digital audio signal. did.
[0009]
By selecting and outputting the first digital audio signal not passing through the information
processing means when the information processing means is activated, the deterioration of the
audio signal is avoided, and an audio signal with high sound quality is output. can do.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will
be described in detail with reference to the drawings.
10-04-2019
2
[0011]
(1) Overall Configuration of Personal Computer In FIG. 1, reference numeral 1 generally denotes
a desktop personal computer (hereinafter referred to as a personal computer) to which the
present invention is applied, and a display 3 and a keyboard on a main unit 2 for executing
various information processing. 4, a mouse 5, speakers 6 and 7 are connected.
The personal computer 1 also has a remote commander (remote control) 8 that remotely controls
processing in the main body 2 via infrared light.
[0012]
(1-1) Configuration of Main Body As shown in FIG. 2, the main body 2 is mounted on a DVD-ROM
(Digital Video Disc-Read Only Memory) drive 11 or DVD-ROM drive 11 at the upper end of the
front panel 2A. An access lamp 12 for indicating a state of access to the disc and an eject button
13 for ejecting the disc mounted on the DVD-ROM drive 11 are provided, and below the DVDROM drive 11 for music A magneto-optical disk, for example, an MD (Mini Disk: trademark) drive
14 and its eject button 15 are provided.
[0013]
Further, below the MD drive 14, a floppy disk drive (FDD) 16, an access lamp 17 and an eject
button 18 of the FDD 16, and an infrared light receiving unit 19 for receiving infrared light
emitted from the remote control 7 (FIG. 1) are provided. It is done.
[0014]
Further, below the FDD 16, an LCD (Liquid Cristal Display) panel 20 for displaying the operation
state of the personal computer 1, etc., and a sound source selection at the time of the audio mode
(described later) operation of the personal computer 1, MD, CD, etc. A plurality of multi-function
buttons 21 used for the music selection operation and the FM broadcast selection operation are
disposed.
[0015]
Below the multi-function button 21, the PC power button 22 for activating the entire personal
computer 1 and using the personal computer 1 in the PC mode (described later) and the audio
function of the personal computer 1 are activated. Audio power button 23 for using the personal
10-04-2019
3
computer 1 in the audio mode (described later), a display button 24 for switching the display
mode of the LCD panel 21 when the personal computer 1 is operating in the audio mode, FM
characters in the audio mode FM data button 25 for displaying / hiding the broadcast, volume
dial 26 for adjusting the playback volume from the speakers 6 and 7 (FIG. 1), and the sound of
FM broadcasting and music CD in the audio mode to MD Menu button 28 for displaying a menu
screen on the LCD panel 21 is disposed in the record button 27, and an audio mode for sound.
[0016]
In addition, a door 29 is provided at the lower end of the front panel 2A so as to be openable and
closable, and a PC (Personal Computer) card slot 31 and a headphone connector 32 are provided
behind the door 29 as shown in FIG. And a connector storage unit 30 including a universal serial
bus (USB) connector 33 and an IEEE (Institute of Electrical and Electronics Engineer) 1394
connector 34.
[0017]
On the other hand, as shown in FIG. 4, at the upper end portion of the back panel 2B of the main
body 2, a light output connector 41 for outputting the sound generated by the personal
computer 1 to another audio device as an optical digital signal An optical input connector 42 for
inputting an optical digital signal supplied from a device, a line output connector 43 for
outputting audio generated by the personal computer 1 to another audio device as an analog
audio signal, generated by the personal computer 1 A speaker connector 44 for outputting sound
to the speaker 6 (FIG. 1) and an FM antenna connector 45 for connecting an FM antenna (not
shown) are provided.
[0018]
In the center left end of the back panel 2B, an analog audio signal supplied from the mouse
connector 46, the keyboard connector 47, the USB connector 48, the serial connector 49, the
printer connector 50, the IEEE 1394 connector 51, the game connector 52, and the audio device
Input connector 53 and microphone connector 54 are provided, and a vent 55 for heat radiation
and an AC (Alternative Current) power input plug 56 are disposed at the center right end of the
back panel 2B. It is done.
[0019]
At the lower end of the back panel 2B, a monitor connector 57, a video output connector 58, an S
video output connector 59, a telephone jack 60, and a telephone line jack 61 are disposed.
10-04-2019
4
[0020]
(1-2) Circuit Configuration of Main Body Next, the circuit configuration of the main body 2 will
be described with reference to FIG.
Here, in FIG. 5, the control signal lines and the data signal lines are indicated by solid lines, the
analog audio signal lines are indicated by alternate long and short dashed lines, and the digital
audio signal lines are indicated by dotted lines.
[0021]
In the main body 2 of the personal computer 1, a video card 72, a modem / card bus card 73, a
hard disk drive (HDD) 74, and a DVD-ROM drive 11 are mounted on a mother board 71 as an
information processing means equipped with a CPU (Central Processing Unit) 70. , The FDD 16,
the MD drive 14 and the microcomputer board 75 are connected.
Further, to the microcomputer board 75, an LCD board 76, an IR (Infra-Red: infrared) receiver
board 77, an FM tuner board 78 and an audio board 79 are connected.
[0022]
In the mother board 71, a CPU 70 that centrally controls various functions of the personal
computer 1 in a PC mode to be described later is connected to the host-PCI bridge 80 via a host
bus 79.
A RAM (Random Access Memory) 81 is connected to the host-PCI bridge 80 via a memory bus
MB, and the CPU 70 executes processing according to various programs and application software
loaded in the RAM 81. It is designed to be able to realize various functions.
[0023]
Also, the host-PCI bridge 80 is connected to the video card 72 via the AGP (Accelerated Graphics
Port), thereby enabling high-speed transfer of image data between the host-PCI bridge 80 and
10-04-2019
5
the video card 72. ing.
[0024]
The video card 72 stores image data based on various application software supplied on a timely
basis in a built-in VRAM (Video Random Access Memory) and appropriately reads it, and the read
image data is displayed via the monitor connector 57 (see FIG. By outputting in 1), a plurality of
window screens can be displayed on the display 3.
The video card 72 converts the image data read out from the VRAM into a video signal, and
supplies the video signal to a video apparatus (not shown) such as a television monitor or a video
tape recorder through the video output connector 58 and the S video output connector 59. It is
made to get.
[0025]
Further, a PCI bus 81 is connected to the host-PCI bridge 80, and three PCI slots 82, an IEEE
1394 interface 83, and a sound chip 84 are connected to the PCI bus 81.
[0026]
A modem / card bus card 73 is connected to one of the three PCI slots 82.
The modem / card bus card 73 is provided with a PC card slot 31 so that data can be transmitted
and received between the PC card inserted in the PC card slot 31 and the PCI bus 81.
The modem / card bus card 73 is also provided with a telephone line jack 61 and a telephone
jack 60, and the telephone line jack 61 is connected to an internet service provider via a public
network (not shown), and the internet service provider When the personal computer 1 is not
using the telephone line by connecting a telephone (not shown) to the telephone jack 60 while
using the telephone, it is possible to connect a voice call using the telephone. It is made to be
able to do.
10-04-2019
6
[0027]
The IEEE 1394 interface 83 is directly connected to the IEEE 1394 connectors 34 and 51, and
can be connected to another computer apparatus or an external device such as a digital video
camera through the IEEE 1394 connectors 34 and 51.
[0028]
Here, the host-PCI bridge 80 controls exchange of various data performed between the CPU 70,
the video card 72, the IEEE 1394 interface 83, and the modem / card bus card 73, and is
connected via the memory bus MB. Memory control of the RAM 81 is performed.
[0029]
The PCI bus 81 is connected to an ISA (Industrial Standard Architecture) bus 85 via a PCI-ISA
bridge 86. The PCI-ISA bridge 86 includes USB terminals 33 and 48, an HDD 74, and a DVD-ROM
drive 11 Is connected.
[0030]
Here, the PCI-ISA bridge 86 is configured by an IDE (Integrated Drive Electronics) interface, a
configuration register, an RTC (Real-Time Clock) circuit, a USB interface, etc., and is a system
clock supplied from a clock generator (not shown). Control the HDD 74 and the DVD-ROM drive
11 via the IDE interface.
[0031]
The hard disk of the HDD 74 stores an operating system (OS: Operating System) such as
Windows 98 (Microsoft Corporation), an electronic mail program, a power saving program, a
screen saver program, an audio control program, and various other application software. It is
transferred to the RAM 81 timely in the process of the start-up process.
[0032]
Further, an I / O (Input / Output) controller 87 is connected to the ISA bus 85.
The I / O controller 87 includes a microcontroller, an I / O interface, a CPU, a ROM (Read Only
Memory), a RAM, and the like, and based on a BIOS (Basic Input / Output System) stored in the
flash ROM 88, It controls data input / output between the operating system and application
10-04-2019
7
software and various peripheral devices such as the HDD 74.
A mouse connector 46, a keyboard connector 47, a serial connector 49, a printer connector 50,
an FDD 16 and a microcomputer board 75 are connected to the I / O controller 87.
[0033]
The microcomputer board 75 includes a microcontroller (microcomputer) 89 as control means
and a digital selector 90 as selection means for switching between input and output of digital
audio signals, and an audio board 79 is connected to the digital selector 90. There is.
[0034]
In the audio board 79, a D / A (digital / analog) conversion unit 92 as conversion means D / A
converts the digital audio signal supplied from the digital selector 90 to generate an analog audio
signal, and generates a sound controller It supplies to 93 and outputs to the outside through the
line output connector 43.
The sound controller 93 performs volume control and equalization on the input analog audio
signal according to the control of the microcomputer 93, supplies this to the amplifier board 94,
and outputs it to the outside through the headphone connector 32.
The amplifier board 94 amplifies the analog audio signal and outputs it through the speaker
connector 44 with the speakers 6 and 7 (FIG. 1).
[0035]
In the audio board 79, the digital / light converter 95 converts the digital audio signal supplied
from the digital selector 90 into an optical digital signal, and outputs the optical signal to the
outside through the optical output connector 41.
The optical / digital converter 91 also converts an optical digital signal input via the optical input
connector 41 into a digital audio signal, and supplies the digital audio signal to the digital
10-04-2019
8
selector 90.
[0036]
The microcomputer board 75 is directly connected to a power supply unit (not shown), and
always operates with the power plug (not shown) of the personal computer 1 inserted in the
outlet.
Further, a PC power button 22 and an audio power button 23 are connected to the
microcomputer 89.
[0037]
When the PC power button 22 is pressed in the power-off state of the main body 2, the
microcomputer 89 as the control means controls the power source unit according to this and
starts the supply of power to each portion constituting the main body 2 The start command is
output to the / O controller 87.
The I / O controller 87 starts processing based on the BIOS program stored in the flash ROM 88
in response to the boot instruction, and boots up the operating system stored in the HDD 74.
As a result, the personal computer 1 is activated in the PC mode using all the functions of the
personal computer 1 under the control of the CPU 70.
[0038]
On the other hand, when the audio power button 23 is depressed in the power-off state of the
main body 2, the microcomputer 89 as a control means controls the power source unit according
to this and starts the supply of power to each part constituting the main body 2. , And controls
the motherboard 71 in a reset state via a power supply controller (not shown).
10-04-2019
9
By resetting the mother board 71, the video card 72, the modem / card bus card 73, the HDD 74
and the FDD 16 are put into the hibernation state, whereby the personal computer 1 receives the
audio function of the personal computer 1, that is, the DVD under the control of the
microcomputer 89. Start up in the audio mode in which only the ROM drive 11, the MD drive 14,
the LCD board 76, the IR receiver board 77, the FM tuner board 78, the audio board 79 and the
amplifier board 91 are activated.
In such an audio mode, since the operating system of the personal computer 1 is not activated,
the activation time of the personal computer 1 is shortened compared to the PC mode.
[0039]
(2) Audio Function in PC Mode Next, the audio function of the personal computer 1 in the PC
mode will be described.
[0040]
As described above, when the PC power button 22 is pressed in the power-off state of the main
body 2, the personal computer 1 is activated in the PC mode using all functions of the personal
computer 1 under the control of the CPU 70.
[0041]
The personal computer 1 has an optical input connector 42, an FM tuner as a sound source of
analog output outputted from the line output connector 43, the headphone connector 32 and the
speaker connector 44 in PC mode and a sound source of optical digital output outputted from
the light output connector 41. The sound sources of the board 78, the DVD-ROM drive 11, the
MD drive 14 and the sound chip 84 can be arbitrarily selected by the digital selector 90.
[0042]
In the PC mode, the personal computer 1 can mix the sound sources of the optical input
connector 42, the FM tuner board 78, the DVD-ROM drive 11, and the MD drive 14 with the
sound chip 84 at an arbitrary ratio. There is.
[0043]
The personal computer 1 mixes the output signals from the sound sources of the DVD-ROM drive
11, the MD drive 14, and the FM tuner board 78 with the sound chip 84 and outputs the mixed
signal in the PC mode The digital selector 90 can select and output any of the paths that are
10-04-2019
10
directly output without being output.
[0044]
In this PC mode, the CPU 70 controls the LCD board 76, the FM tuner board 78, the audio board
79, the MD drive 14 and the digital selector 90 via the microcomputer 89, and the DVD-ROM
drive 11 via the PCI-ISA bridge 86. Control.
[0045]
The FM tuner board 78 demodulates the FM broadcast wave supplied from the FM antenna
connector 45 according to the control of the CPU 70 to generate an analog audio signal, and also
incorporates the analog audio signal into a built-in D / A (analog / digital) A digital audio signal is
generated by digital conversion in a conversion unit (not shown).
The FM tuner board 78 outputs the analog audio signal to the sound chip 84 and outputs the
digital audio signal to the digital selector 90.
[0046]
The MD drive 14 as a reproduction means reproduces a mini disc as a mounted digital sound
source according to the control of the CPU 70 to generate a digital audio signal, and also
incorporates the digital audio signal into a built-in D / A (digital / analog And D / A conversion at
a conversion unit (not shown) to generate an analog audio signal.
Then, the MD drive 14 outputs the analog audio signal to the sound chip 84 and outputs the
digital audio signal to the digital selector 90.
[0047]
The DVD-ROM drive 11 as a reproduction means reproduces an audio CD as a mounted digital
sound source according to the control of the CPU 70 to generate a digital audio signal, and also
incorporates the digital audio signal into a built-in D / A converter D / A conversion is performed
10-04-2019
11
(not shown) to generate an analog audio signal.
Then, the DVD-ROM drive 11 outputs the analog audio signal to the sound chip 84 and outputs
the digital audio signal to the digital selector 90.
[0048]
The sound chip 84 digitizes the analog audio signal input from the FM tuner board 78, the DVDROM drive 11, the MD drive 14, the line input connector 53 and the microphone connector 54
with a built-in A / D conversion unit (not shown). Convert to audio signal.
Then, the sound chip 84 mixes these digital audio signals with digital audio signals such as sound
effects generated by the operating system supplied from the PCI bus 81 at a ratio according to
the control of the CPU 70, and the resulting digital The audio signal is output to the digital
selector 90.
[0049]
As shown in FIG. 6, the digital selector 90 comprises an input selector 90A, an optical digital
output selector 90B, and an analog output selector 90C.
[0050]
In the input selector 90A, the optical / digital conversion unit 91 is connected to the first input
terminal A1, the DVD-ROM drive 11 is connected to the second input terminal A2, and the MD
drive 14 is connected to the third input terminal A3. The FM tuner board 78 is connected to the
fourth input terminal A4, and the sound chip 84 is connected to the fifth input terminal A5.
[0051]
The sound chip 84 is connected to the analog input terminal BA of the optical digital output
selector 90B and the analog input terminal CA of the analog output selector 90C, and the
switching output terminal Aout of the input selector 90A is the digital input terminal BD of the
optical digital output selector 90B. It is connected to the digital input terminal CD of the analog
output selector 90C.
10-04-2019
12
Then, the switch output terminal Bout of the optical digital output selector 90B is connected to
the digital / light converter 95, and the switch output terminal Cout of the analog output selector
90C is connected to the D / A converter 92.
Further, the switching output terminal Aout of the input selector 90A is connected to the MD
drive 14, whereby the audio signal from the sound source selected by the input selector 90A can
be recorded by the MD drive 14.
[0052]
Here, in the personal computer 1, the switching setting of the digital selector 90 in the PC mode
can be set on the sound selection screen 100 (FIG. 7) displayed on the display 3 based on the
audio control program. There is.
[0053]
In FIG. 7, the sound selection screen 100 sets an input setting unit 101A that sets an input of the
input selector 90A, an optical digital output setting unit 101B that sets an input of the optical
digital output selector 90B, and an input of an analog output selector 90C. And an analog output
setting unit 101C.
[0054]
In the input setting unit 101A, for example, when “optical digital IN” is selected, the input
selector 90A (FIG. 6) accordingly connects the switching output terminal Aout to the first input
terminal A1, and “CD” is selected. In response to this, the input selector 90A connects the
switching output terminal Aout to the second input terminal A2.
Similarly, when "MD" is selected in the input setting unit 101A, the input selector 90A connects
the switching output terminal Aout to the third input terminal A3, and when "FM" is selected, the
input selector 90A outputs a switching output. When the terminal Aout is connected to the
fourth input terminal A4 and the "sound chip" is selected, the input selector 90A connects the
switching output terminal Aout to the fifth input terminal A5.
10-04-2019
13
[0055]
When, for example, “output the selected input sound source” is selected in the optical digital
output setting unit 101B, the optical digital output selector 90B (FIG. 6) responds to this and sets
the switching output terminal Bout to the digital input terminal BD. The sound source selected by
the input switching setting unit 101A is connected to the digital / light converting unit 95.
On the other hand, when "output sound source of sound chip mixer" is selected in the optical
digital output setting unit 101B, the optical digital output selector 90B connects the switching
output terminal Bout to the analog input terminal BA accordingly. Thereby, the sound chip 84 is
connected to the digital / light converter 95.
[0056]
Similarly, when “output selected input sound source” is selected in the analog output setting
unit 101C, the analog output selector 90C (FIG. 6) accordingly connects the switching output
terminal Cout to the digital input terminal CD, Thus, the sound source selected by the input
switching setting unit 101A is connected to the D / A converter 92.
On the other hand, when "output sound source of sound chip mixer" is selected in the analog
output setting unit 101C, the analog output selector 90C correspondingly connects the switching
output terminal Cout to the analog input terminal CA, thereby , Sound chip 84 is connected to the
D / A converter 92.
[0057]
In the personal computer 1, the switching state of the digital selector 90 in the PC mode can be
confirmed on the connection state display screen 110 (FIG. 8) displayed on the display 3 based
on the audio control program.
[0058]
In FIG. 8, the connection status display screen 110 includes a sound chip icon 110A representing
the sound chip 84, a CD / DVD icon 110B representing the DVD-ROM drive 11, an MD icon 110C
representing the MD drive 14, and an FM tuner board 78. Icon 110D, optical digital input icon
110E representing optical digital input from optical digital input connector 42, optical digital
10-04-2019
14
output icon 110F representing optical digital output from optical digital output connector 41,
and line output connector 43, headphone connector 32 and Seven icons of a speaker icon 110G
representing an analog output from the speaker 6 are arranged in a substantially elliptical shape
and displayed.
[0059]
Then, on the connection state display screen 110, an icon indicating a sound source connected
by the digital selector 90 and an icon indicating an output are connected by a dotted line and
displayed.
For example, as shown in FIG. 6, the switch output terminal Aout of the input selector 90A is
connected to the second input terminal A2, the switch output terminal Bout of the optical digital
output selector 90B is connected to the digital input terminal BD, and the switch of the analog
output selector 90C When the output terminal Cout is connected to the digital input terminal CD,
on the connection status display screen 110, between the CD / DVD icon 110B and the optical
digital output icon 110F and between the CD / DVD icon 110B and the speaker icon 110G. A
dotted line is displayed on.
[0060]
Here, when “output sound source of sound chip mixer” is selected in the optical digital output
setting unit 101 B (FIG. 7), audio signals from the DVD-ROM drive 11 and the MD drive 14 are
respectively DVD-ROM drive 11. Alternatively, after being once D / A converted in the MD drive
14, it is A / D converted in the sound chip 84 and input to the digital / light converter 95.
[0061]
On the other hand, when "output the selected input sound source" is selected in the optical digital
output setting unit 101B, the audio signals from the DVD-ROM drive 11 and the MD drive 14 are
directly digital / without changing the digital audio signal. It is input to the light conversion unit
95.
For this reason, when "output the selected input sound source" is selected in the optical digital
output setting unit 101B, D / A conversion and A / D conversion of the audio signal are not
10-04-2019
15
performed, so "output sound source of sound chip mixer" An audio signal with high sound quality
can be output as compared with the case where “Yes” is selected.
[0062]
Similarly, when "output sound source of sound chip mixer" is selected in the analog output
setting unit 101C, the audio signals from the DVD-ROM drive 11 and the MD drive 14 are in the
DVD-ROM drive 11 or the MD drive 14, respectively. The signal is once D / A converted, then A /
D converted in the sound chip 84 and input to the D / A converter 92.
[0063]
On the other hand, when "output the selected input sound source" is selected in the analog
output setting unit 101C, the audio signals from the DVD-ROM drive 11 and the MD drive 14 are
directly D / A as digital audio signals. It is input to the conversion unit 92.
For this reason, when "output the selected input sound source" is selected in the analog output
setting unit 101C, D / A conversion and A / D conversion of the audio signal are not performed,
so "the sound source of the sound chip mixer is output An audio signal with high sound quality
can be output as compared with the case where “” is selected.
[0064]
As described above, in the personal computer 1, in addition to the path through the sound chip
84, the path not through the sound chip 84 can be selected as the output path of the audio signal
from the DVD-ROM drive 11 and the MD drive 14. It is done like that.
[0065]
(3) Audio Function in Audio Mode Next, the audio function of the personal computer 1 in the
audio mode will be described.
[0066]
As described above, when the audio power button 23 is pressed in the power-off state of the
main body 2, the personal computer 1 is activated in an audio mode in which only the audio
function of the personal computer 1 is activated under the control of the microcomputer 89.
10-04-2019
16
[0067]
In the audio mode, functional units performing information processing functions (operating
system and execution of application programs) in the personal computer 1, that is, the mother
board 71, the video card 72, the modem / card bus card 73, the HDD 74 and the FDD 16 are
made dormant. Ru.
[0068]
Further, in the audio mode, the operating system of the personal computer 1 is not activated, so
in the audio mode, the personal computer 1 is activated in a short time as compared with the PC
mode.
[0069]
In the audio mode, the personal computer 1 selects any one of the light input connector 42, the
FM tuner board 78, the DVD-ROM drive 11, and the MD drive 14 as a sound source, and
generates an audio signal from the selected sound source. An output from the output connector
43, the headphone connector 32, the speaker connector 44, and the light output connector 41,
and an audio signal from the selected sound source can be recorded by the MD drive 14.
[0070]
In this audio mode, the microcomputer 89 (FIG. 5) operates independently and controls the LCD
board 76, the FM tuner board 78, the audio board 79, the DVD-ROM drive 11, the MD drive 14
and the digital selector 90.
[0071]
The FM tuner board 78 demodulates the FM broadcast wave supplied from the FM antenna
connector 45 according to the control of the microcomputer 89, and then A / D converts it to
generate a digital audio signal, and supplies this to the digital selector 90.
[0072]
In response to the control of the microcomputer 89, the MD drive 14 reproduces the mounted
mini disc to generate a digital audio signal, and supplies this to the digital selector 90.
[0073]
The DVD-ROM drive 11 operates in accordance with the control of the microcomputer 89,
10-04-2019
17
reproduces the attached audio CD, generates a digital audio signal, and supplies the digital audio
signal to the digital selector 90.
[0074]
Here, in the personal computer 1, the switching setting of the digital selector 90 in the audio
mode can be set using the multi-function button 21 associated with the display on the LCD panel
20 (FIG. 2).
The LCD panel 20 displays a screen according to the sound source (FM tuner board 78, DVDROM drive 11, MD drive 14, or optical input connector 42) selected at that time.
[0075]
For example, FIG. 9 shows the display state of the LCD panel 20 when the DVD-ROM drive 11 is
selected as a sound source, and the function icon 20A showing the selection of a sound source
and the reproduction stop of the audio CD mounted on the DVD-ROM drive 11. Stop icon 20B
indicating playback start of audio CD, rewind icon 20D indicating rewinding of playback track of
audio CD, fast forward icon 20E indicating fast-forwarding playback track of audio CD, and
selection of playback mode The mode icons 20F indicating the are displayed in association with
the buttons 21A to 21F of the multi-function button 21, respectively.
Also when the FM tuner board 78, the MD drive 14, or the optical input connector 42 is selected
as a sound source, a display in which the function icon 20A is associated with the button 21A is
similarly made.
[0076]
The microcomputer 89 (FIG. 6) controls the digital selector 90 in the audio mode to connect the
switching output terminal Bout of the optical digital output selector 90B to the digital input
terminal BD, and digitally inputs the switching output terminal Cout of the analog output selector
90C. Connect to terminal CD.
[0077]
10-04-2019
18
Further, the microcomputer 89 sequentially switches the switching output terminal Aout of the
input selector 90A to the first input terminal A1, the second input terminal A2, the third input
terminal A3 and the fourth input terminal A4 each time the button 21A is pressed. Connecting.
Thus, each time the button 21A is pressed, the optical input connector 42, the FM tuner board
78, the DVD-ROM drive 11 and the MD drive 14 are sequentially selected as the sound source.
[0078]
As described above, in the audio mode, the digital selector 90 selects each sound source of the
light input connector 42, the FM tuner board 78, the DVD-ROM drive 11 or the MD drive 14
according to the depression of the button 21A, and The supplied digital audio signal is output to
the outside through the digital / optical converter 95 and the D / A converter 92.
[0079]
Here, in the audio mode, the personal computer 1 directly transmits digital audio signals from
the respective sound sources of the optical digital input connector 42, the DVD-ROM drive 11,
the MD drive 14 or the FM tuner board 78 without passing through the sound chip 84. The
digital / light converter 95 and the D / A converter 92 are supplied.
Therefore, in the audio mode, digital audio signals from the respective sound sources are not
subjected to D / A conversion and A / D conversion in the middle, whereby the personal
computer 1 can output high quality audio signals in the audio mode. .
[0080]
(4) Operation and Effects of the Embodiment In the above configuration, when the PC power
button 22 is pressed in the power-off state, the personal computer 1 activates the operating
system stored in the HDD 74 accordingly, and the CPU 70 Under the control of (1), start up in
the PC mode in which all functions of the personal computer 1 are used.
[0081]
In the PC mode, the personal computer 1 can select one of a path passing through the sound chip
10-04-2019
19
84 and a path not passing through the sound chip 84 as an output path of an audio signal from
each sound source. By selecting a path not passing through the sound chip 84, it is possible to
output high-quality sound by omitting D / A conversion and A / D conversion of the sound signal.
[0082]
On the other hand, when the audio power button 23 is pressed in the power-off state, the
personal computer 1 starts up in the audio mode using only the audio function in the personal
computer 1 under the control of the microcomputer 89 accordingly.
[0083]
In this audio mode, the personal computer 1 starts up faster than the PC mode because it does
not start up the operating system, and since the audio signal from the sound source does not go
through the sound chip 84, D / A conversion and A / A conversion of the audio signal are
performed. High-quality audio signals can be output without D conversion.
[0084]
Thus, the personal computer 1 has an audio mode using only the audio function without
activating the operating system, in addition to the PC mode using all functions, and selecting and
activating the PC mode or the audio mode Can.
[0085]
According to the above configuration, the personal computer 1 is activated by selecting either
the PC mode for activating all functions of the personal computer 1 or the audio mode for
activating only the audio function of the personal computer 1. As a result, when only the audio
function is used, it is not necessary to start the operating system, whereby the usability of the
personal computer 1 can be improved.
[0086]
Then, in the audio mode, by outputting the audio signal from the selected sound source without
passing through the sound chip 84, a high-quality audio signal can be obtained by omitting D / A
conversion and A / D conversion of the audio signal. Can be output.
[0087]
Also in the PC mode, in addition to the path passing through the sound chip 84, the path not
10-04-2019
20
passing through the sound chip 84 can be selected as an output path of the audio signal from the
selected sound source. It is possible to output high-quality sound signals by omitting D / A
conversion and A / D conversion.
[0088]
(5) Other Embodiments In the above embodiment, the present invention is applied to the desktop
personal computer 1 in which the display 3 and the main body 2 are separated, but the present
invention is not limited thereto. The present invention is not limited to this, and may be applied
to a desktop personal computer integrated with a display and a main body, or a notebook
personal computer.
[0089]
Further, in the above embodiment, the case of selecting and outputting the audio signal from the
sound chip 84, the DVD-ROM drive 11, the MD drive 14, the FM tuner board 78 and the optical
digital input connector 42 has been described. The present invention is not limited to this. For
example, audio signals from various sound sources such as DAT (Digital Audio Tape) may be
selected and output.
[0090]
As described above, according to the present invention, the first digital audio signal is read out
from a predetermined digital sound source and output, and / or the first digital audio signal is
converted into the first analog audio signal. Reproduction means for outputting the information,
and desired information processing according to the basic program, and information processing
means for converting the first analog audio signal output from the reproduction means into a
second digital audio signal and outputting the signal , Selection means for selectively selecting
and outputting the first digital audio signal or the second digital audio signal, and selection
means when the information processing means is operable independently of the information
processing means and the information processing means is not activated And output control
means for selecting and outputting the first digital audio signal by controlling the first digital
audio signal, so that only the audio function in the information processing apparatus is used, Can
start the management apparatus at a high speed, it is possible to improve the usability.
[0091]
Further, in the information processing apparatus, since the audio signal can be output without
passing through the information processing means, the deterioration of the audio signal can be
avoided, and an audio signal with high sound quality can be output.
10-04-2019
21
[0092]
Brief description of the drawings
[0093]
1 is a schematic diagram showing the overall configuration of a personal computer according to
the present invention.
[0094]
2 is a schematic diagram showing the configuration of the front panel of the main body.
[0095]
3 is a schematic diagram showing the configuration of the connector housing portion.
[0096]
4 is a schematic diagram showing the configuration of the back panel.
[0097]
5 is a block diagram showing a circuit configuration of a personal computer.
[0098]
6 is a block diagram showing the configuration of the digital selector.
[0099]
7 is a schematic diagram showing the configuration of the sound selection screen.
[0100]
8 is a schematic diagram showing the configuration of the connection state display screen.
[0101]
9 is a schematic diagram showing a display state of the LCD panel.
10-04-2019
22
[0102]
Explanation of sign
[0103]
DESCRIPTION OF SYMBOLS 1 ...... Personal computer, 2 ...... Main body, 3 ...... Display, 4 ......
Keyboard, 5 ...... Mouse, 6, 7 ...... Speaker, 8 ...... Remote control, 11 ...... DVD-ROM drive, 14 ......
MD Drive 20: LCD panel 21 Multifunction button 22 PC power button 23 Audio power button 70
CPU 78 FM tuner board 84 sound chip 90 Digital selector.
10-04-2019
23
Документ
Категория
Без категории
Просмотров
0
Размер файла
34 Кб
Теги
jp2001216132, description
1/--страниц
Пожаловаться на содержимое документа