KR100403538B1 - Digital surrounding audio system for personal computer - Google Patents

Abstract

The present invention supports a plurality of speakers to provide more vivid digital stereo sound regardless of the type of computer, as well as CD or DVD, as well as video CD, game CD, computer karaoke, MP3, VCR, It supports both TV and other external stereos so that the above functions can be used together to ensure sufficient compatibility between products, and its installation structure is configured externally to make assembly very easy. The present invention relates to a digital stereophonic audio device for a personal computer, which greatly improves convenience. To this end, the present invention is a tuner which is operated by the tuner selection key on the front of the main body, and receives an airwave of FM or AM through the tuner input terminal on the rear thereof; An analog switch circuit which is operated by an external input selection key on the front of the main body and inputs / outputs an analog signal from various analog peripherals or from the tuner through an analog input terminal and an analog output terminal on the back thereof; A digital switch circuit operated by an external input selection key on the front of the main body and input / output digital signals from various digital peripherals such as CDs and DVDs through digital input terminals and digital output terminals on the rear surface thereof; A USB interface operated by a PC selection key on the front of the main body and receiving and matching the USB signal of the computer main body from a USB input terminal at the rear thereof; A / D converter for converting the analog signal of the analog switch circuit into a digital signal, a digital interface for matching the digital signal of the digital switch circuit, the digital signal input via the A / D converter, the digital interface and the USB interface A DSP unit for processing a memory, a memory for storing or inputting / outputting data from the DSP unit, a controller for controlling an operation state of the DSP unit, a D / A converter for converting a digital signal processed by the DSP unit into an analog signal, Digital processing means comprising a preamplifier for preamplifying the analog signal converted from the D / A converter and a main amplifier for amplifying the analog signal amplified from the preamplifier again; Receiving an external power source (AC) from the speaker relay for outputting the analog signal amplified by the main amplifier by the control of the CPU to a plurality of speaker output terminals formed on the back of the main body and the power cable formed on the back of the main body And a power supply means for supplying driving power independently.

Description

Digital stereo audio system for personal computer {DIGITAL SURROUNDING AUDIO SYSTEM FOR PERSONAL COMPUTER}

The present invention relates to a digital stereophonic audio system for a personal computer, and more particularly, to Dolby Digital AC3 (Audio Code Number 3) or Dolby Pro Logic stereo sound of a next-generation video media (Digital Versatile Discs). The present invention relates to a digital stereoscopic audio system for personal computers.

At present, computer acoustic products generally realize virtual stereo sound with two speakers, integrated amplifiers with amplifiers in the speaker are released, and multimedia stereo sound systems for computers are also sold.

The conventional multimedia stereo sound system for a computer is a speaker and an amplifier built into the main body of the computer to create a virtual three-dimensional sound, in this regard the Republic of Korea Patent Publication No. 1998-074073, "Audio system is mounted Multimedia computer ".

According to the related art disclosed in the related art, in a general multimedia computer, a tuner having a main amplifier and a tape recorder, which can be assembled on a drive mount formed in a computer main body, is assembled and installed, and the high output speaker is electrically connected to each other. The sound output from various CDs can be enjoyed in a realistic and lively manner. High-quality sound can be output when using various softwares through the TV receiving card or sound card installed in the computer main body. You can listen through.

However, the sound system of the conventional multimedia computer as described above is composed mostly of two speakers, which cannot be extended by the speaker, and reproduces the stereo sound as virtual stereo sound to describe the stereoscopic sound of the milti-channel, but the sound quality is virtually made. Due to the limitation, there is a problem that can not implement the effect of the real three-dimensional sound.

In addition, by using the power of the computer together, there is a problem in that the audio system can be used only when the output of the limit and the inconvenience of use, for example, the computer operating.

In addition, the conventional technology is limited to the use of only a specific computer product, so the compatibility of the manufacturer is inferior, there is a problem that the existing computer user has to purchase a separate system in order to enjoy stereoscopic sound.

In addition, the system for supporting the 6-channel Dolby Pro Logic stereo sound of the theater sound system is very expensive and bulky, it is difficult to install in a general personal computer.

In addition, there is a problem that CD-ROM drive users or DVD-ROM drive users do not have a wide range of product compatibility that allows both DVD and CD-ROMs to be viewed in stereophonic sound, so that mutual functions cannot be used together.

The present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to support a plurality of speakers in order to provide a more vivid digital stereo sound can be used regardless of the type of computer and , CD or DVD, as well as video CD, game CD, computer karaoke, MP3, VCR, TV and other external stereo, so that the above functions can be used together to ensure sufficient compatibility between the products, the installation structure is built-in or Its external configuration makes it extremely easy to assemble and provides a digital stereoscopic audio system for personal computers that uses a separate power supply to greatly improve the amplifier output and ease of use.

1 is a control block diagram of a digital stereophonic audio system for a personal computer according to the present invention;

2 to 4 are diagrams showing the use state of a digital stereo sound audio system for a personal computer according to the present invention;

2 is a perspective view showing an embodiment of a built-in type,

Figure 3 is a perspective view showing a base structure as an embodiment of the external type,

4 is a perspective view showing a tower structure as another embodiment of the exterior type.

<Description of Symbols for Main Parts of Drawings>

101: tuner 102: analog switch circuit

103: A / D converter 104: digital switch circuit

105: digital interface 106: USB interface

107: DSP unit 108: memory

109: D / A converter 110: preamplifier

111: main amplifier 112: speaker relay

200: control unit 201: CPU

202: input key 203: display

300: power supply means 301: standby relay

302: standby transformer 303: main transformer

304: power supply

In order to achieve the above object, a feature of a digital stereophonic audio system for a personal computer according to the present invention is a tuner for receiving an airwave of FM or AM; An analog switch circuit receiving an analog signal from the tuner or various analog peripheral devices; An A / D converter for converting an analog signal of the analog switch circuit into a digital signal; Digital switch circuits for receiving digital signals from various digital peripherals such as CDs and DVDs; A digital interface for matching digital signals of the digital switch circuit; A USB interface for receiving and matching USB signals from a USB port of a personal computer; A DSP unit for processing digital signals input via the A / D converter, the digital interface and the USB interface; A memory for storing or inputting / outputting data from the DSP unit; A control unit controlling an operation state of the DSP unit; A D / A converter for converting the digital signal processed by the DSP unit into an analog signal; A main amplifier for amplifying the analog signal converted from the D / A converter; A speaker relay configured to output an analog signal amplified by the main amplifier under control of the CPU; And power supply means for independently supplying driving power to the respective parts.

Hereinafter, with reference to the accompanying drawings the specific configuration and operation of the present invention will be described in more detail.

1 is a control block diagram of a digital stereophonic audio system for a personal computer according to the present invention, Figures 2 to 4 is a state diagram of the use of a digital stereophonic audio system for a personal computer according to the present invention, Figure 2 is a built-in 3 is a perspective view showing a base structure as one embodiment of the exterior type, and FIG. 4 is a perspective view showing a tower structure as another embodiment of the exterior type.

As shown in Fig. 1, the present invention provides a tuner 101 for receiving an airwave of FM or AM; An analog switch circuit 102 for receiving an analog signal from the tuner 101 or various analog peripheral devices; An A / D converter 103 for converting an analog signal of the analog switch circuit 102 into a digital signal; A digital switch circuit 104 for receiving digital signals from various digital peripherals such as CDs and DVDs; A digital interface (105) for matching digital signals of the digital switch circuit (104); A USB interface 106 for receiving and matching USB signals from a USB port of a personal computer; A DSP unit (107) for processing digital signals input via the A / D converter (103), the digital interface (105) and the USB interface (106); A memory 108 for storing or inputting / outputting data from the DSP unit 107; A control unit 200 for controlling an operation state of the DSP unit 107; A D / A converter (109) for converting the digital signal processed by the DSP unit (107) into an analog signal; A main amplifier (111) for amplifying the analog signal converted from the D / A converter (109); A speaker relay 112 for outputting an analog signal amplified by the main amplifier 111 under the control of the CPU 113; And power supply means 300 for independently supplying driving power to the respective parts 101, 111, 107, 200. The apparatus may further include a preamplifier 110 for preamplifying the analog signal converted from the D / A converter 109.

The control unit 200 may include a CPU 201 for controlling an operation state of the DSP unit 107; An input key 202 for inputting a user's command to the CPU 201; And a display 203 for outputting an operating state of the system under the control of the CPU 201.

In addition, the power supply means 300 includes a standby relay 301 for receiving AC power; A standby transformer 302 which receives an AC power and converts it into a DC power and applies it to the controller 200; A main transformer 303 which receives the power input from the standby relay 301 and converts the power into DC power; And a power supply 304 for supplying the DC power converted by the main transformer 303 to the respective parts 101, 111, 107, 200.

Looking at the operation of the present invention configured as described above, the air wave of the FM or AM received from the tuner 101 is input to the analog switch circuit 102, is converted into a digital signal via the A / D converter 103 and then the DSP unit 107 is entered. In addition, the analog switch circuit 102 receives an analog signal from various analog peripherals in addition to the signal input from the tuner 101, converts the analog signal into a digital signal via the A / D converter 103, and then sends the signal to the DSP unit 107. Is entered.

On the other hand, digital signals from various digital peripherals such as CDs and DVDs are input to the digital switch circuit 104, matched digital signals via the digital interface 105, and then input to the DSP unit 107. In addition, the USB signal input from the USB port of the personal computer is also input to the DSP unit 107 via the USB interface 106.

As described above, each digital signal input through the A / D converter 103, the digital interface 105, and the USB interface 106 is processed by the DSP unit 107 as a predetermined sound signal. At this time, the CPU 201 controls the operation state of the DSP unit 107, and the memory 108 stores or inputs and outputs data from the DSP unit 107. In addition, the CPU 201 increases a user's convenience by inputting a user's command through the input key 202 and displaying an operation state of the system to the outside through the display 203.

Subsequently, the digital signal processed by the DSP unit 107 as described above is converted into an analog signal through the D / A converter 109, sequentially amplified through the preamplifier 110 and the main amplifier 111, and then the speaker. It is output to an external speaker through the relay 112.

Here, each of the parts 101, 111, 107, 200 is supplied with a driving power independent from the power supply means 300, the standby relay 301 receives the AC power through the main transformer 303 After converting to DC power and supplying to the power supply 304, the standby transformer 302 receives the AC power is converted to DC power and transferred to the control unit 200.

The present invention has been made to solve the problems of the prior art as described above, and its object is to support a plurality of speakers in order to provide a more vibrant digital stereoscopic sound, regardless of the type of computer and It supports video CD, game CD, computer karaoke, MP3, VCR, TV and other external stereo as well as CD or DVD so that the above functions can be used together to ensure sufficient compatibility between products, and its installation structure is external. It is easy to assemble and extremely easy to configure, and to provide a digital stereo sound audio device for a personal computer using a separate power supply, greatly improving the amplifier output and ease of use.

In order to achieve the above object, a digital stereoscopic audio device for a personal computer according to the present invention is connected to a personal computer main body equipped with a USB port, a CD or a DVD, and connected to the computer main body via a USB port for transmission from the computer main body. In the digital stereoscopic audio system for a personal computer for acoustically processing the audio signal and outputting the same through a speaker, the USB interface 105, FM or AM for receiving a USB signal from the USB port of the computer main body 10 and matching the same. A tuner 101 for receiving air waves, an analog switch circuit 102 for receiving an analog signal from the tuner or various analog peripheral devices, and an A / D converter 103 for converting an analog signal from the analog switch circuit 102 into a digital signal. Digital switch circuit 104 for receiving a digital signal from a digital peripheral device including a CD or DVD, DSP unit for processing the digital signal input through the digital interface 105, the A / D converter 103, the digital interface 105 and the USB interface 106 to match the digital signal of the digital switch circuit 104 ( 107), a memory 108 for storing or inputting / outputting data from the DSP unit 107, a controller 200 for controlling the operation state of the DSP unit 107, and a digital signal processed by the DSP unit 107. D / A converter 109 for converting the signal into an analog signal, a main amplifier 111 for heavying the analog signal converted from the D / A converter 109, and the main amplifier 111 under the control of the CPU 201. An audio device main body 20 including a speaker relay 112 for outputting an analog signal amplified by the &lt; RTI ID = 0.0 &gt;), &lt; / RTI &gt; And a PC selection key for selecting a signal input from the USB port on an external front surface of the audio device main body 20, a tuner selection key 2020 for selecting the tuner, an external input selection key 2030, and the tuner ( Channel keys 2050 and 2060 for selecting up / down of input channels through 101, DSP selection keys 2070 for selecting sound field effect sounds according to places, preset keys 2080 for searching for input channels, and A display window 2040 which displays a state in which a plurality of keys are selected, respectively, and a letter, and converts the AC power of the power supply means 300 into DC power to supply the driving power supplied to the controller 200. The display includes a standby LED 2100, a volume control knob 2090, a headphone output terminal 2120, and a power on / off key 2110.

In addition, the power supply of the audio system 20 used a separate power supply device 30 without using a power supply device inside the computer. By using alternating current, the high-frequency noise problem that occurs when using a DC adapter can be reproduced close to analog sound quality. In addition, when the internal power supply unit is used in combination, the computer may malfunction due to lack of power. However, by using the independent power supply unit 30, the computer malfunction is prevented and the limited output of the audio system 20 is prevented. By solving the problem, high-power stereo sound can be enjoyed.

In addition, unlike the conventional products, the stereo sound that can be enjoyed only when the computer is turned on by using the independent power supply device 30 can operate only the audio system without turning on the computer, so that external sound such as a DVD player, VTR, TV, cassette, etc. By connecting to the device, you can enjoy stereo sound of multiple channels.

As shown, the present invention is operated by the tuner selection key 2020 on the front of the audio device main body 20, the tuner 101 for receiving the FM or AM airwaves through the tuner input terminal 2150 on the back thereof Wow; Operated by an external input selection key 2030 on the front of the audio device main body 20, the analog input terminal 2130 and the analog output terminal 2140 on the back of various analog peripherals or from the tuner 101 to analog An analog switch circuit 102 for inputting / outputting a signal; Operated by an external input selection key 2030 on the front of the audio device main body 20, digital signals from various digital peripherals, such as CDs and DVDs, can be received through the digital input terminals 2180 and digital output terminals 2190 on the back thereof. A digital switch circuit 104 for input / output; A USB interface 106 which is operated by a PC selection key 2010 on the front side of the audio device main body 20 and receives and matches the USB signal of the computer main body 10 from the rear USB input terminal 2170; An A / D converter 103 for converting the analog signal of the analog switch circuit 102 into a digital signal, a digital interface 105 for matching the digital signal of the digital switch circuit 104, and the A / D converter 103 ), A DSP unit 107 for processing digital signals input through the digital interface 105 and the USB interface 106, a memory 108 for storing or inputting and outputting data from the DSP unit 107, and From the control unit 200 for controlling the operation state of the DSP unit 107, the D / A converter 109 for converting the digital signal processed by the DSP unit 107 into an analog signal, and the D / A converter 109 Digital processing means comprising a preamplifier (110) for preamplifying the converted analog signal, and a main amplifier (111) for amplifying the analog signal amplified from the preamplifier (110) again; The speaker relay 112 and the audio outputting the analog signal amplified by the main amplifier 111 by the control of the CPU 113 to a plurality of speaker output terminals 2160 formed on the back of the audio device main body 20. Power supply means 300 for receiving the external power (AC) from the power cable 2200 formed on the back of the main body of the device 20 to independently supply the driving power to the respective parts (101) (111) (107) (200) It consists of.

As described above, according to the digital stereoscopic audio system for a personal computer according to the present invention, by providing a plurality of speakers to provide a more vibrant digital stereoscopic sound, regardless of the type of computer, It supports not only CD or DVD but also video CD, game CD, computer karaoke, MP3, VCR, TV and other external stereos so that the above functions can be used together to ensure sufficient compatibility between products, and its installation structure is internal or external. It is very easy to assemble, so that it is possible to use a separate power supply, and there is a great variety of effects to greatly improve the amplifier output and ease of use.

Claims (4)

A personal computer body equipped with a USB port, a CD or DVD, and a digital stereo audio system for a personal computer, which is connected to the computer body via a USB port and processes audio signals transmitted from the computer body through a speaker. To USB interface 105 for receiving and matching USB signals from the USB port of the computer main body 10, Tuner 101 for receiving air waves of FM or AM, and analog switches for receiving analog signals from the tuner or various analog peripherals. A digital switch circuit 104 for receiving a digital signal from a digital peripheral including a circuit 102, an A / D converter 103 for converting an analog signal of the analog switch circuit 102 into a digital signal, a CD or a DVD, and DSP unit for processing the digital signal input through the digital interface 105, the A / D converter 103, the digital interface 105 and the USB interface 106 to match the digital signal of the digital switch circuit 104 ( 107), a memory 108 for storing or inputting / outputting data from the DSP unit 107, a controller 200 for controlling an operation state of the DSP unit 107, and the DSP The D / A converter 109 converts the digital signal processed by the nits 107 into an analog signal, the main amplifier 111 which amplifies the analog signal converted from the D / A converter 109, and the CPU 201. The audio device main body 20 includes a speaker relay 112 for outputting an analog signal amplified by the main amplifier 111 and a power supply means 300 for independently supplying driving power to the respective parts. ; And PC selection key (2010) for selecting a signal input from the USB port on the external front of the audio device body 20, tuner selection key (2020) for selecting the tuner 101, external input selection key (2030) ), Channel keys 2050 and 2060 for selecting up / down of input channels through the tuner 101, DSP selection keys 2070 for selecting sound field effect sounds according to places, and preset keys for searching for input channels. 2080, a display window 2040 for displaying a state in which the plurality of keys are selected, respectively, and a drive supplied to the control unit 200 by converting AC power from the power supply unit 300 into DC power; Standby LED (2100), volume control knob (2090), headphone output terminal (2120), indicating the power supply state 3D audio for personal computer comprising a power on / off key (2110) Device. The digital stereo audio system for a personal computer according to claim 1, further comprising a preamplifier (110) for preamplifying the analog signal converted from the D / A converter (109). The method of claim 1, wherein the control unit 200; A CPU 201 for controlling an operating state of the DSP unit 107; An input key 202 for inputting a user's command to the CPU 201; And a display (203) for outputting an operation state of the system under the control of the CPU (201). The method of claim 1, wherein the power supply means 300; A standby relay 301 for receiving AC power; A standby transformer 302 which receives an AC power and converts it into a DC power and applies it to the controller 200; A main transformer 303 which receives the power input from the standby relay 301 and converts the power into DC power; And a power supply (304) for supplying the DC power converted by the main transformer (303) to the respective parts (101) (111) (107) (200). Looking at the operation of the present invention configured as described above, the air wave of the FM or AM received from the antenna is input through the tuner input terminal 2150 on the back of the audio device main body 20, and then through the tuner 101 through an analog switch circuit ( 102 is input to the DSP unit 107 after being converted into a digital signal via the A / D converter 103. In addition to the signal input from the tuner 101, the analog switch circuit 102 receives an analog signal from various analog peripherals through the analog input terminal 2130 on the back of the audio device main body 20, and the A / D converter. The digital signal is converted into a digital signal through the 103 and then input to the DSP unit 107. On the other hand, digital signals from various digital peripherals such as CDs and DVDs are input to the digital switch circuit 104 through the digital output terminal 2190 on the rear side of the audio device audio device main body 20, and via the digital interface 105. The digital signals are matched and then input to the DSP unit 107. In addition, the USB signal input from the USB port of the personal computer main body 10 is input from the rear USB input terminal 2170 and input to the DSP unit 107 via the USB interface 106. As described above, according to the digital stereoscopic audio device for a personal computer according to the present invention, by providing a plurality of speakers in order to provide a more vibrant digital stereoscopic sound can be used regardless of the type of computer, It supports not only CD or DVD but also video CD, game CD, computer karaoke, MP3, VCR, TV and other external stereos so that the above functions can be used together to ensure sufficient compatibility between products, and its installation structure is configured externally. Therefore, assembling is extremely easy and there is a wide variety of effects that greatly improve the amplifier output and ease of use by using a separate power source.