KR19980063652U - Display device with sound output level limit function - Google Patents

Abstract

The present invention relates to a display device having a sound output level limit function that can be output at night as it is output during the day at night by limiting the sound output level for each time zone to prevent the user from being surprised.

It is configured to limit the sound level output through the sound amplifier circuit to a certain level by adjusting the output volume of the sound amplifier circuit according to the sound output level stored in the microcomputer and the sound output level of each broadcasting station. By limiting the output level of the sound, it is possible to prevent the user or people around from being surprised by the high sound suddenly output at night.

Description

Display device with sound output level limit function

The present invention relates to a display device, and more particularly, a display having a sound output level limit function that can be output at night as it is output at night as it is during the day by limiting the sound output level for each time zone. Relates to a device.

A general display device is a representative peripheral device of a computer that forms and displays an image so that a user can recognize a signal transmitted from the computer.

The basic configuration of the internal circuit will be briefly described through the first diagram.

As shown, a video card 10 mounted in a computer (not shown) for providing color signals (R, G, B) and horizontal / vertical synchronization signals (H_Sync / V_Sync) necessary for image formation, and the video. The microcomputer 20 generates a screen control signal for controlling the monitor screen by receiving the horizontal / vertical sync signal from the card 10, and receives the horizontal sync signal H_Sync and the vertical sync signal V_Sync, respectively, and receives the CRT ( The electron beam generated by the electron gun of 80) is deflected in order from the upper left to the lower right of the CRT 80 by deflection yoke (DY) to perform horizontal and vertical deflection so as to form an image like a picture. An anode of the CRT 80 using a deflection circuit 30 and a horizontal deflection circuit 40 and a retrace pulse generated from an output terminal of the horizontal deflection circuit 40 using the principle of switching circuit and high voltage technology. High voltage A high voltage circuit 50 that supplies a device, a video preamplifier 60 that amplifies low image signals R, G, and B transmitted from the video card 10 by a low voltage amplifier, and maintains a constant voltage level; A video main amplifier 70 supplies energy to each pixel by amplifying the amplified signal through the video preamplifier 60 to a signal of 40V _PP to 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 a display device that enables a user to recognize a signal processed by such a 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.

2 is a block diagram illustrating a multimedia computer system around a display device. In this case, although the reference numerals are also given to components that overlap with FIG. 1, 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.

On the other hand, the display apparatus 200 receives a TV or VGA synchronization signal output from the TV receiving card 140 and outputs phase adjustment data and on-screen display (OSD) data. And an OSD-IC 220 for receiving and processing 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 ( A video preamplifier 230 that receives a TV or VGA video signal output from the amplified signal 140 and amplifies it to a predetermined level; A video output amplifier 240, a cathode ray tube (hereinafter referred to as a CRT) displaying a video signal sufficiently amplified by the video output amplifier 240, and an output from the sound card 130 The sound preamplifier 260 receives a sound signal and amplifies the sound signal to a predetermined level, and the sound output amplifier 270 receives a sound signal amplified by the sound preamplifier 260 and is sufficiently amplified and output. And a speaker SP for outputting a sound signal sufficiently amplified by the sound output amplifier 270.

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.

The VGA video signal and the sync signal output from the video card 120 are applied to the TV receiving card 140. The TV receiving card 140 receiving the VGA video signal and the sync signal selectively outputs the video signal and the sync signal according to the control signal of the CPU 110.

The TV or VGA video signal selectively output from the TV receiving card 140 is applied to the video preamplifier 230. The video preamplifier 230 receiving the TV or VGA image signal and the OSD signal amplifies the applied signal to a predetermined level and outputs the amplified signal.

The video signal output from the video preamplifier 230 is again amplified by the video output amplifier 240 and then applied to the CRT. At this time, the microcomputer 210 receives the corresponding synchronization signal from the TV receiving card 140 to display the video signal on the CRT screen.

In the process of using the display device having such a configuration, the user performs a TV driving program to watch TV. If there is no TV receiving card 140 in the computer, the TV signal is transmitted through an external signal input terminal formed on one side of the display device. This description assumes the use of a TV receiving card.

The video signal is output to the TV reception card 140 and the audio signal is output to the speaker SP. At this time, if the use time is day, there is no problem, but if it is night, there is a problem. In other words, if the computer is used with the audio output turned on during the day and the sound is turned off, the sound is output even when it is used at night. Suddenly, high pitched sounds can be heard and people around you can be damaged.

The present invention is to solve this problem, it is an object of the present invention to provide a display device that can prevent the sudden noise occurs even when used at night by limiting the sound output to a certain level.

Another object of the present invention is to provide a display device that can set the sound output level using an OSD (On Screen Display) device.

The present invention for achieving the above object is to receive a TV or VGA synchronization signal output from the TV receiving card in the computer to output the micro-adjustment data and OSD data, and to receive and process the OSD data output from the microcomputer OSD An OSD-IC for outputting a gain signal, a video amplifier circuit for receiving an OSD gain signal output from the OSD-IC and an image signal output from the TV receiving card, and amplifying the gain signal to a predetermined level, and the video amplifier circuit sufficiently A CRT displaying an amplified video signal, a sound amplifier circuit which receives a sound signal output from a sound card in a computer, amplifies and outputs a predetermined level, and a speaker which outputs a sound signal sufficiently amplified by the sound amplifier circuit ( In a display device composed of SP); An output level limiting circuit is configured between the sound amplifier circuit and the speaker to limit the sound level output through the sound amplifier circuit to a predetermined level according to the control signal of the microcomputer.

1 is a block diagram showing an internal circuit of a typical display device;

2 is an internal configuration diagram of a display device having a multimedia function;

3 is a block diagram of a display device according to the application of the present invention.

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

3 is a block diagram showing the configuration of a display device according to the present invention. As shown, the microcomputer 3 outputs the image adjustment data and the OSD data by receiving a TV or VGA synchronization signal output from the TV reception card 1 in the computer, and the OSD data output from the microcomputer 3 is applied. OSD-IC (4) which receives and processes and outputs OSD gain signal, OSD gain signal outputted from the OSD-IC (4) and video signal outputted from the TV receiving card 1 are amplified to a predetermined level The video amplifier circuit 5, the CRT 6 for displaying the video signal sufficiently amplified by the video amplifier circuit 5, and the sound signal output from the sound card 2 in the computer. A sound amplifier circuit 7 for amplifying and outputting a speaker, a speaker SP for outputting a sound signal sufficiently amplified by the sound amplifier circuit 7, and the sound amplifier circuit according to a control signal of the microcomputer 3; 7) It consists of the sound level output to the output level limiting circuit (8) for limiting to a predetermined level.

The user sets the hourly sound output restriction level by operating the OSD adjustment push key on the front of the display device. In this case, use the OSD screen to determine the sound output limit value for each time. In addition, the information set at this time is stored in the microcomputer 3 as a control reference value.

As described above, when a user watches a TV watching program while using a computer while the sound output level is set for each hour, the microcomputer detects it according to a signal transmitted through the TV receiving card. According to this signal, the microcomputer checks the current time and recognizes the sound output level set at that time.

The video signal from the TV receiving card 1 is amplified by the video amplifier circuit 5 via the microcomputer 3 and output to the CRT. On the other hand, the audio signal according to TV reception is transferred from the sound card 2 to the sound amplifier circuit 7 and amplified.

At this time, the microcomputer 3 outputs a control signal to the output level limiting circuit 8. The sound level limitation according to the current time recognized by the microcomputer 3 is transmitted. The operation of the output level limiting circuit 8 is determined according to this control signal. At this time, the output level limiting circuit 8 compares the output value of the current sound amplifier circuit 7 with the limiting value transmitted from the microcomputer and controls the output of the speaker SP according to the result.

As described above, the present invention has an effect of preventing the user or people around from being surprised by the high-pitched sound suddenly output at night by limiting the output level of the sound output through the speaker according to the change of time.

Claims (4)

A microcomputer receiving a TV or VGA sync signal output from a TV receiving card in a computer and outputting phase adjustment data and OSD data; An OSD-IC for receiving and processing OSD data output from the microcomputer to output an OSD gain signal; A video amplifier circuit which receives an OSD gain signal output from the OSD-IC and an image signal output from the TV receiving card and amplifies the signal to a predetermined level; A CRT displaying a video signal sufficiently amplified by the video amplifier circuit; A sound amplifier circuit which receives a sound signal output from a sound card in the computer and amplifies and outputs the sound signal to a predetermined level; A display device comprising a speaker (SP) for outputting a sound signal sufficiently amplified by the sound amplifier circuit; An output level limiting circuit is configured between the sound amplifier circuit and the speaker to limit the sound level output through the sound amplifier circuit to a predetermined level according to the control signal of the microcomputer. Having a display device. The method of claim 1, The micom is a display device having a sound output level limit function, characterized in that the sound level limit function is set using the OSD-IC. The method of claim 1, And the microcomputer determines a sound output level according to the corresponding time by checking the current time. The method of claim 1, And the output level limit signal of the microcomputer is transmitted to the sound amplifier.