KR100306418B1 - Device and method for controlling sound of multimedia computer - Google Patents

Abstract

PURPOSE: A device and a method for controlling sound of a multimedia computer are provided to prevent the duplicate construction of amplifier at a main body or a monitor, and to control the sound resource in the monitor. CONSTITUTION: The computer confirms the power on state of monitor after power on(S111) and reads the initial sound value stored in the computer as a standard volume if the monitor turned off the power from the initial state(S112). If the monitor turned on the power, the initial volume value is transmitted to the computer. After that, even if the monitor turns off the power, a speaker continuously operates according to the signal outputted from a sound card of computer(S113). The operation to initialize the sound control is executed according to the sound initial value in the computer or the monitor(S114), and the output part of speaker is controlled after completing the initialization(S115). The sound control signal is checked that the signal is controlled by the monitor(S117). The control signal outputted from a microcomputer of monitor is transmitted to the sound control circuit of computer(S118), the sound value of computer is adjusted by the received sound control signal, and the changed volume control value is stored in the computer as the initial sound value(S119).

Description

Sound Control and Method in Multimedia Computer

The present invention relates to a computer system capable of implementing a multimedia function, and more particularly, to controlling a sound source in a computer using a microcomputer in a monitor, so that the sound amplification circuit can be prevented from being used twice. It relates to an apparatus and a method.

A general computer system includes a computer body (hereinafter referred to as a computer) that handles information and various peripheral devices that process the information.

The configuration of such a computer system will be described with reference to FIG. 1. First, peripheral devices of a computer system are divided into input means and output means for exchanging information with a computer.

Input means for inputting information into the computer 1 include a keyboard 3 having a plurality of keys and a mouse 4 which is useful for creating graphics.

As the output means, a monitor 2 which is a display device for displaying information transmitted from the computer 1 as an image on a display screen is used.

The monitor 2 is a representative output device of a computer that forms and displays an image so that a user can recognize a signal transmitted from the computer 1.

The basic configuration of the internal circuit will be briefly described with reference to FIG. 2.

The computer 1 is equipped with a video card 10 which provides color signals R, G, B and horizontal / vertical synchronization signals H_Sync / V_Sync necessary for image formation.

The monitor 2 receives the horizontal / vertical sync signal from the video card 10 and generates a microcomputer 20 for generating a screen control signal for controlling the monitor screen, a horizontal sync signal H_Sync, and a vertical sync signal V_Sync. ), The electron beam generated from the electron gun of the CRT (80) is deflected from the upper left to the lower right of the CRT (80) by the deflection yoke (DY) in order to form an image like a picture. And the vertical deflection circuit 30 and the horizontal deflection circuit 40 which perform vertical deflection, and the retrace pulse generated from the output terminal of the horizontal deflection circuit 40 using the principle of switching circuit and high voltage technology. A high voltage circuit 50, which is a device for supplying a high voltage to the anode terminal of 80, and a low voltage amplifier amplify low image signals R, G, B transmitted from the video card 10 to a constant voltage Keep the level It is configured to include a video preamplifier 60 and the video main amplifier 70, which supplies energy to each pixel to amplify a signal of the amplified via the video preamplifier 60 40V _PP ~ 60V _PP.

Modern computers, on the other hand, tend to integrate audio, video, TV, game consoles, and communications devices in simple computing and database functions. A computer equipped with hardware to perform this multifunction is generally called a multimedia computer. Therefore, a lot of changes follow the monitor which enables the user to recognize the signal processed by the multimedia computer.

Many programs having image data and sound data, such as games or moving picture programs, are being produced. In addition, TV receiving cards capable of receiving TV broadcasts using a computer according to a multimedia function of a computer are widely used.

3 is a block diagram illustrating a multimedia computer system centered on a monitor. In this case, the same reference numerals are used for components that overlap with FIG. 2, but the basic operations are the same.

First, the computer 100 processes a program having an image and sound data and a driver program for TV reception to output image data and sound data, and the image data output from the CPU 110. The video card 120 receives the VGA signal and the horizontal / vertical synchronizing signal (H / V-SYNC) synchronized with the signal, and receives sound data output from the CPU 110. A sound card 130 for outputting a sound signal and a TV video signal provided from the CPU 110 and a VGA video signal output from the video card 120 are applied to selectively output a corresponding video signal and a synchronization signal. TV reception card 140 is included.

Meanwhile, the monitor 200 receives a TV or VGA synchronization signal output from the TV receiving card 140 and outputs an image data and on-screen display (OSD) data. An OSD-IC 220 for receiving and processing the OSD data output from the microcomputer 210 to output an OSD gain signal, an OSD gain signal output from the OSD-IC 220, and the TV receiving card 140. A video preamplifier 230 that receives a TV or VGA video signal outputted from the amplified video signal and amplifies it to a predetermined level, and a video that amplifies the video signal or OSD signal amplified by the video preamplifier 230 sufficiently and is output. An output amplifier 240, a cathode ray tube (hereinafter referred to as a CRT) for displaying a video signal sufficiently amplified by the video output amplifier 240, and a sound output from the sound card 130; A sound preamplifier 250 that receives a signal and amplifies the signal to a predetermined level, a sound output amplifier 260 that receives a sufficient amount of the sound signal amplified by the sound preamplifier 250 and outputs the amplified signal sufficiently and outputs the amplified signal; The speaker SP is configured to output a sound signal sufficiently amplified by the sound output amplifier 260.

When the user executes a game or a moving image program using the computer 100, the video card 120 outputs a VGA video signal. In addition, it generates and outputs a VGA synchronization signal for synchronizing the VGA video signal output from the video card 120. At the same time, sound data generated by the execution of a game or a moving image program is processed by the sound card 130 to output a sound signal.

At this time, the transmission process of the sound signal between the computer 100 and the monitor 200 will be described with reference to FIG. The small signal sound output from the sound card 130 of the computer is transmitted to each speaker SP through the amplifier 200 (collectively referred to as the sound preamp and the sound main amplifier) in the monitor and implemented as sound.

At this time, in order to adjust the sound output, the sound card 130 signal of the computer is adjusted first. After adjusting as much as the signal can be output from the monitor 200, the control signal is transmitted to the amplifier 300 through the microcomputer 210 of the monitor 200 to adjust the volume.

As such, since a separate amplifier 300 needs to be added to the monitor 200, there is an uneconomic problem.

Disclosure of Invention The present invention has been made to solve such a problem, and an object of the present invention is to provide a multimedia computer sound adjusting apparatus and method for preventing an amplifier from being dually configured in a main body and a monitor in a multimedia computer.

Another object of the present invention is to provide a sound control device and method for a multimedia computer, which is intended to facilitate the use by controlling the sound source in the computer main body in the computer, and the monitor and the sound source in the computer.

A feature of the present invention for achieving the above object is a multimedia computer including a monitor with a built-in speaker, and a main body with a built-in sound control circuit for providing sound to the speakers in the monitor, the output from the microcomputer in the monitor The sound control signal is connected to the sound control circuit of the main body via a separate signal cable is configured to control the sound.

The speaker of the monitor is characterized in that the amplified sound signal is provided directly from the sound control circuit of the computer.

Still another aspect of the present invention provides a sound initial value setting process according to whether the monitor is powered on, a process of receiving a sound control signal in an interrupt manner, a sound control process when an input sound control signal is provided from a monitor, and a sound. This includes the process of adjusting the sound when the control signal is provided from the computer.

1 is a block diagram showing the configuration of a general computer system;

2 is a block diagram showing an internal configuration of a general monitor;

3 is a main block diagram of a general multimedia computer;

4 is a configuration diagram showing a process of transmitting a sound signal between a computer and a monitor;

5 is a block diagram showing a computer system centered on a path of sound according to the present invention;

6 is a flowchart illustrating a sound adjusting method according to the present invention.

Hereinafter, the configuration and operation thereof according to the present invention will be described with reference to the accompanying drawings.

5 is a block diagram of a computer system according to the present invention centered on a path of sound.

As shown, the amplifier is removed from the monitor 200, it can be seen that the volume control signal of the microcomputer 210 for sound control is provided to the sound card 130 in the computer.

Of course, it should be assumed that the control signal of the microcomputer 210 is made through a separate cable configured between the computer and the monitor 200. The wires included in this cable carry the sound signal along with sound control signals and USB signals.

Also, the sound signal transmitted from the sound card 130 in the computer to the speaker SP of the monitor 200 indicates that the amplified large signal sound is directly provided to the speaker.

6 is a flowchart illustrating an operation process according to the present invention.

When the computer system is turned on, the computer checks if the monitor is turned on.

If the monitor is not powered from the beginning, the reference value of the volume reads the initial sound value stored in the computer (step S112).

If the monitor is powered on, the initial volume level of the monitor is transferred to the PC. After that, even if the monitor is turned off, the speaker continues to operate according to the signal provided by the sound card of the computer. (S113 course)

The sound adjustment initialization operation is performed according to the initial sound value of the computer or the initial value of the monitor.

After the initialization is completed, adjust the output of the speaker (step S115).

Wait for input of sound control signal by interrupt method. At this time, the performance of the sound control signal may include a method of operating a sound control function key installed at a predetermined position on the front of the monitor, and a method of driving a program capable of adjusting sound in the computer.

Check if the sound control signal is adjusted by the monitor (step S117).

First, note the case where the audio control signal is provided from the monitor. The control signal output from the microcomputer of the monitor is transmitted to the sound control circuit of the computer (step S118) and the sound value in the computer is adjusted according to this signal. The changed volume adjustment value is stored in the PC and used as the initial sound value (step S119).

If the audio control signal is provided from the computer, this data is transmitted to the microcomputer of the monitor through a signal transmission cable configured separately (step S121). Accordingly, the sound value of the monitor is changed. The changed volume control value is stored in the nonvolatile memory device in the monitor. The stored volume value is used as the initial sound value with power up. (S122 process)

The audio control signal is amplified by the sound control circuit in the computer and output. At this time, the adjustment is made by software in the computer, and the amplified and output sound signal is transmitted to the speaker of the display device.

The display device drives the OSD screen to display each adjustment so that the user can recognize it.

As described above, the present invention has the effect of reducing the cost and convenience of use by improving the configuration of the redundant redundant amplifier.

Claims (3)

A multimedia computer comprising a monitor incorporating a speaker and a main body incorporating a sound control circuit for providing sound to the speakers in the monitor, And a sound control signal output from the microcomputer in the monitor is connected to the sound control circuit of the main body through a separate signal cable to adjust the sound. The method of claim 1, The speaker of the monitor is provided with a sound signal amplified directly from the sound control circuit of the computer main body. Setting a sound initial value according to whether the monitor is powered on; Receiving a sound control signal in an interrupt manner; A sound adjusting process when an input sound control signal is provided from a monitor; And a sound adjusting process when a sound adjusting signal is provided from the computer. Sound control method of a multimedia computer, characterized in that it comprises a.

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