KR19990039754A - Television's Dynamic Equalizer Display System - Google Patents

Abstract

The present invention relates to a dynamic equalizer display system of a television capable of visually recognizing a tone of a voice signal that is changed every moment through a screen when watching a music broadcast, and includes a key input unit having a dynamic equalizer operation function selection key ( 10) and the operation is controlled by the input operation control signal to compensate the frequency characteristics at every moment according to the frequency band of the audio signal output from the switching unit 20 and detect the tone of the voice signal with the frequency characteristics compensated Dynamic equalizer processing unit 60 for outputting the corresponding DC level signal, OSD display unit 12 for outputting the video signal corresponding to the tone of the audio signal to the image processing unit 7 in accordance with the input operation control signal, and key input unit (8) Dynamic Equalizer Operation Function Selection Dynamic Equalizer Processing A microprocessor 30 for outputting an operation signal to the processor 60 and an operation control signal corresponding to a signal output from the dynamic equalizer processor 60 to the voice processor 6 and the OSD display 12, In addition, the condenser C1 (C2) and the resistor R1 (R2) are symmetrically connected in series to the left and right stereo signal output links between the switching unit 20 and the audio processing unit 21 around the voltage dividing point A. By the dynamic equalizer display system of the television further including the synthesizer 50, there is an effect that the user can hear a richer voice signal through both hearing and vision.

Description

Television's Dynamic Equalizer Display System

The present invention relates to an equalizer display system of a television, and more particularly, to a dynamic equalizer display system of a television which displays a change in an audio signal every moment on a screen through an OSD so that a viewer can visually recognize when watching a music broadcast. .

In general, a television outputs audio / video signals included in a radio frequency signal selected through a tuner or audio / video signals output from an external device such as an audio system through a screen and a speaker.

Due to the increase in leisure time due to the technological advancement and economical abundance of the television and audio system, the recent transition from the simply listening to the sound output from the television and audio system to the era of feeling the sound output from the audio system In order to satisfy the needs of the viewers, in recent televisions, a tone control circuit is integrally included in the voice processing unit so that the user can raise or lower the sound of a specific signal band among high and low sound signals. Status is displayed on the screen through the OSD.

In addition, when the still image according to the sound state appearing on the screen through the OSD is described in more detail with reference to FIG. 1A, when the user lowers the tone of a specific voice signal, it corresponds to the degree of the tone lowered from the center bar downward. It displays a plurality of horizontal bars to display a plurality of horizontal bars corresponding to the degree of the tone raised from the center bar when the user raises a specific sound.

Fig. 1B is a block diagram showing a television including a general tone control circuit.

In FIG. 1B, reference numeral 1 denotes an antenna, and 2 denotes a tuner for selecting a broadcast signal of a channel selected by a preset voltage input from a wireless broadcast signal received through the antenna 1.

5 denotes a P / S separator for separating the image intermediate frequency signal PIF and the voice intermediate frequency signal SIF from the intermediate frequency signal output from the tuner 2, and 6 denotes the P / S separator 5 An audio detector detects an audio signal from an audio intermediate frequency signal (SIF) output from the PDP, and a signal detector 7 detects an image signal from the video intermediate frequency signal (PIF) output from the P / S separation unit (5). Represents wealth.

In addition, reference numeral 8 denotes a key input unit for allowing a viewer to select a desired channel, to select each mode of the television, for example, an external device or a TV mode, or to adjust the output audio signal to a desired tone. 10 denotes a memory in which data corresponding to the operation mode of the television is stored.

Further, reference numeral 12 denotes a screen display unit for overlapping and outputting a character or a picture, etc., on a screen on which a broadcast signal is output separately from the broadcast signal according to the input operation control signal. And a reference numeral 14 serves to generate a PWM signal which is a channel tuning signal corresponding to the input operation control signal.

On the other hand, reference numeral 19 denotes an audio system (LP player, CD player, etc.) that reads data from a predetermined recording medium and outputs a video signal and an audio signal, and 20 denotes an audio detector 6 and an audio signal according to an input switching signal. A switching section for selectively outputting audio and video signals from the video detector 7 and audio and video signals from the audio system 19 is shown.

In addition, reference numeral 21 has a built-in tone control circuit for processing the voice signal according to the sound intensity and the tone of the voice signal selected by the user through the key input unit 8 for the voice signal output from the switching unit 20 22 denotes a voice processing unit, and 22 denotes a voice amplifying unit for amplifying and outputting the voice signal processed by the voice processing unit 21 to a speaker.

In addition, reference numeral 23 denotes R (Red) and G corresponding to the input image signal by mixing the image signal output from the switching unit 20 and the OSD display unit 12 according to the input control signal and performing a predetermined process. Green and B (Blue) signals are outputted to the CRT driver 26.

Reference numeral 30 denotes a microprocessor for outputting an operation control signal to various devices constituting the television based on the signal input from the key input section 8.

Hereinafter, the operation of the tone control circuit will be described in detail.

When the user sets the tone of the voice signal to be listened to through the key input unit 8, the microprocessor 30 transmits an operation control signal corresponding thereto based on the signal output from the key input unit 8. And to the OSD display unit 12.

On the basis of the signal output from the microprocessor 30, the voice processing unit 21 controls the tone of the voice signal output from the switching unit 20 and outputs it to the speaker, and the OSD display unit 12 is shown in FIG. As shown in the figure, horizontal bars corresponding to the tone set at a predetermined corner of the screen are continuously displayed until there is a tone display removing signal input.

However, according to the conventional tone control circuit described above, only the still image corresponding to the tone selected by the user is output on the screen, so that the instantaneous change of the sound cannot be visually listened to, so that the listening effect is deteriorated. In addition, since the characteristics of the voice signal are compensated with a predetermined tone for a specific frequency band, there is a problem that the satisfaction in sound quality is lowered.

SUMMARY OF THE INVENTION An object of the present invention for solving the above problems is to provide a dynamic equalizer display system for a television that displays the sound intensity on a screen every viewer visually through an OSD when watching a music broadcast. .

1A is a diagram showing a conventional voice signal tone display.

1B is a block diagram showing a schematic configuration of a conventional television.

2 is a block diagram of a television equipped with a dynamic equalizer display system according to the present invention;

* Description of the symbols for the main parts of the drawings *

8: key input 12: OSD display

20: switching unit 21: voice processing unit

23: image processing unit 50: combining unit

60: dynamic equalizer processing unit

A feature of the present invention for achieving the above object, according to the sound intensity and equalizer control signal input to the left and right stereo voice signal (R) (L) is selectively output from the switching unit 20 by the input operation control signal A television comprising a voice processor 21 for processing an audio signal and an image processor 23 for mixing the input video signals according to a control signal and then outputting the predetermined signal to the CRT driver 26. The operation is controlled by a key input unit 10 having an equalizer operation function selection key and an input operation control signal, thereby compensating the frequency characteristics at every moment according to the frequency band of the audio signal output from the switching unit 20, A dynamic equalizer processing unit 60 which detects a tone of a voice signal whose characteristic is compensated and outputs a DC level signal corresponding thereto, and an input operation agent The OSD display unit 12 outputs an image signal corresponding to the tone of the audio signal to the image processing unit according to the signal, and the dynamic equalizer processing unit 60 transmits the operation signal to the dynamic equalizer processing unit 60 when there is a dynamic equalizer operation function selection key input from the key input unit 8. And a microprocessor 30 for outputting an operation control signal corresponding to a signal output from the dynamic equalizer processing unit 60 to the voice processing unit 6 and the OSD display unit 12.

An additional feature of the invention is the condenser (C1) (C2) and resistor (R1) (R2) around the voltage dividing point (A) on the left and right stereo signal output links between the switching unit (20) and the audio processing unit (21). The symmetrical series is further included, further comprising a combining unit 50 for combining the left and right stereo signals output from the switching unit 20 into one signal.

Hereinafter, described in detail with reference to the accompanying drawings, preferred embodiments of the present invention. In the exemplary embodiment of the present invention, the same reference numerals as in FIG. 1B are denoted by the same reference numerals to avoid duplication of description.

2 is a block diagram of a television showing a dynamic equalizer display system according to the present invention.

The dynamic equalizer display system allows the user to select various operating modes of the television (on / off function of an external device, dynamic equalizer display function, etc.) and a signal input from the key input unit 10 according to the signal output from the key input unit 10. The voice detection unit includes a microcomputer 30 for controlling overall operation of the television and an equalizer circuit, and is selectively output from the switching unit 20 by an operation control signal output from the microcomputer 30 according to a user's selection. 6 to the left and right stereo voice signal R (L) or the left and right stereo voice signal R (L) of the audio system 19 to the tone control signal of the sound intensity and voice signal output from the microprocessor 30. The voice signal processor 21 for processing the voice signal, the voice amplifier 22 for amplifying the voice signal processed by the voice processor 21, and outputting the amplified voice signal to the speaker; The switching unit is connected to the left and right stereo signal output links between the switching unit 20 and the voice processing unit 21 by symmetrical series connection of the capacitors C1 and C2 and the resistor R1 and R2 around the voltage dividing point A. A voice unit 50 for combining the left and right stereo signals output from the unit 20 into one signal, and the voice output from the voltage dividing point A of the unit 50 by an operation control signal output from the microprocessor 30. A dynamic equalizer processor for compensating the frequency characteristics at every instant according to the frequency band subdivided into a plurality of signals, detecting a tone of the speech signal with the frequency characteristics compensated, and outputting a corresponding DC level signal to the microprocessor 30 ( 60) and a character or picture (in the present invention, a plurality of horizontal bars for displaying a dynamic equalizer) according to an input operation control signal, on the screen where a broadcast signal is output separately from the broadcast signal. The OSD display unit 12 and the switching unit 20 and the video signal outputted from the OSD display unit 12 are mixed in accordance with the input control signal and then subjected to a predetermined process to the CRT driver 26. And an image processor 23 for outputting.

Embodiments of the present invention will be described in more detail below.

When the user selects the TV mode or the audio mode through the key input unit 8, the microprocessor 30 outputs a corresponding operation control signal to various devices constituting the television.

When the user selects the dynamic equalizer display function through the key input unit 8 in order to visually listen to the selected voice signal, the microprocessor 30 may determine the dynamic equalizer processing unit based on the signal output from the key input unit 8. When the reset signal is output to the 60 and the reset signal output from the microprocessor 30 is input, the dynamic equalizer processor 60 compensates the frequency characteristic of the voice signal output from the combiner 50 and compensates the frequency characteristic. The tone of the voice signal is detected every minute and a DC level signal corresponding thereto is output to the microprocessor 30.

Then, the microprocessor 30 outputs an operation control signal to the OSD display unit 12 based on the signal output from the dynamic equalizer processing unit 60, and the OSD display unit 12 for each frequency band corresponding to the input signal. A plurality of horizontal bars which are added or subtracted are output by overlapping the video signals being output on the screen. The microprocessor 30 outputs a control signal corresponding to the timbre of the voice signal output from the dynamic equalizer processor 60 to the OSD display unit 12 and outputs a corresponding operation control signal to the voice processor 21. By compensating the frequency characteristics of the voice signal output from the switching unit 20 by the equalizer circuit built in the voice processor 21 according to the control signal output from the microprocessor 30 and outputs to the speaker.

In the above embodiment, since the left and right stereo signals are input to the dynamic equalizer processing unit 60 when there is no combining unit 50, the dynamic equalizer processing unit 60 compensates the plurality of stereo signal frequency characteristics, and then adjusts the tones. The respective signals are detected and output to the microprocessor 30, and the microprocessor 30 outputs the corresponding operation control signal to the OSD display 12 so that the left and right stereo signals correspond to both the left and right stereo signals on the screen of the television. As a plurality of tones display horizontal bars are output, visual confusion of the user is caused.

Therefore, according to the present invention, the dynamic equalizer processing unit allows the user to more accurately listen to the voice signal with the frequency characteristics compensated and visually see the change of sound through the screen.

According to the present invention operating as described above, the dynamic equalizer processing unit enables the user to more accurately listen to the voice signal with the frequency characteristics compensated, and to visually see the change in sound through the screen, the voice signal Satisfaction with listening is improved.

Claims (2)

A voice processor 21 for processing a voice signal according to a sound intensity and an equalizer control signal input to the left and right stereo voice signals R and L selected and output by the switching unit 20 by an input operation control signal; In a television comprising an image processor 23 for mixing input video signals according to a control signal and then outputting the predetermined signal to the CRT driver 26: A key input unit 10 having a dynamic equalizer operation function selection key; The operation is controlled by the input operation control signal to compensate for the frequency characteristic at every moment according to the frequency band of the audio signal output from the switching unit 20, and detects the tone of the voice signal with the frequency characteristic compensated and corresponding DC A dynamic equalizer processing unit 60 for outputting a level signal; An OSD display unit 12 for outputting an image signal corresponding to a tone of an audio signal to an image processor according to an input operation control signal; Selection of the dynamic equalizer operation function from the key input unit 8 When there is a key input, the operation signal is output to the dynamic equalizer processing unit 60 and the operation control signal corresponding to the signal output from the dynamic equalizer processing unit 60 is output to the voice processing unit 6. And a microprocessor (30) for outputting to the OSD display unit (12). The left and right stereo signal output links between the switching unit 20 and the audio processing unit 21 have capacitors C1 and C2 and resistors R1 and R2 around the voltage dividing point A. And a combining unit (50) for symmetrically serially connecting the left and right stereo signals output from the switching unit (20) into one signal.