KR960010468B1 - Equalizer indicating circuit of television monitor - Google Patents

Abstract

a equalize processing unit(12) for separating a tuned voice signal from a tuner(11) into a certain number of frequencies; an input unit(14) with multiple equalize keys for adjusting separated frequencies up/down; a volume control unit(13) for adjusting a corresponding frequency volume by an equalize key; a micro computer(15) for displaying an OSD(On Screen Display) bar graph in a screen according to an output of the volume control unit; thereby providing an OSD equalize display.

Description

Equalization display circuit on television

1 is a block diagram schematically showing an equalization display circuit in a television according to the present invention;

FIG. 2 is a flowchart showing frequency operation when a key for performing an equalization display function is input in FIG.

3 is an exemplary diagram showing an equalized display state according to the present invention on an on-screen display on a screen;

4 is a flowchart showing an on-screen display function when a key for performing an equalization display function is input in FIG.

* Explanation of symbols for the main parts of the drawings

11: Tuner part 12: Equalization processing part

13: volume control unit 14: key input unit

15: Micom 16: Addition

17: amplification part.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an equalization display circuit in a television, and in particular, to give an equalization function to a television and to display an equalization graph on a screen by using an On Screen Display function. The present invention relates to an equalization display circuit in a television that provides convenience to a user by displaying.

In the related art, in order to listen to a tone that is suitable for each user's taste on a TV, an audio graphic equalization system has to be used. In addition, there is a problem in that the use of the remote control function of the equalization is inconvenient to use.

SUMMARY OF THE INVENTION The present invention has been made to solve this problem, and an object of the present invention is to provide an equalization system inside a television, adjust the volume of a predetermined frequency according to an equalization key input, and simultaneously display the frequency state on the screen using an OSD. It is to provide an equalization display circuit in a television to be displayed.

An equalization display circuit in a television according to the present invention for achieving this object comprises equalization processing means for separating a voice signal tuned by a tuner into a predetermined number of frequencies and a frequency separated from the equalization processing means. Key input means having a plurality of equalizing keys for adjusting up / down, control means for adjusting and outputting a volume of a corresponding frequency by an equalizing key of the key input means, and outputting of the volume control means. According to the on-screen display bar graph frame up / down on the screen is made up of micom to display.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an equalization display circuit in a television according to the present invention will now be described in detail with reference to the accompanying drawings.

1 is a block diagram briefly showing an equalization display circuit in a television according to the present invention.

The tuner unit 11 outputs a voice signal by tuning only one frequency by a selected channel among the frequencies induced by the antenna, and at the output terminal of the tuner unit 11, the frequency of the voice signal output from the tuner unit 11. Equalization processing unit 12 for separating and outputting is connected.

The output terminal of the equalization processor 12 is connected to the volume control unit 13 for adjusting the volume of the frequency in accordance with the equalization key, and the output terminal of the volume control unit 13 displays an OSD graph bar of the frequency whose volume is adjusted. The microcomputer 15 is connected to indicate, and the adder 16 for synthesizing the frequency output from the volume control unit 13 is connected at the same time.

On the other hand, the key input unit 14 provided with equalizing keys may include a remote controller or may include a key panel attached to a television.

The key input unit 14 uses four frequencies f1, f2, f3, and f4 as an example. When the corresponding key is input, the key input unit 14 is input to the microcomputer 15 to control the volume control unit 13.

The equalization processor 12 and the volume controller 13 may be integrated circuits.

In the present invention configured as described above, the audio signal tuned by the tuner unit 11 and then input to the equalization processing unit 12 is separated by each frequency and input to the volume control unit 13.

In this case, when the equalizing key of the key input unit 14 is input to the volume control unit 13 through the microcomputer 15, the volume control unit 3 adjusts the volume of the corresponding frequency to add the unit 16 and the amplifying unit 17. Through output to the speaker (SP), and at the same time to the microcomputer 15 to display the equalized OSD graph on the CRT according to the volume of each frequency.

An operation when the equalizing key of the key input unit 14 is input will be described in detail with reference to FIGS. 2 and 3.

If there is a key input (step 201), it is determined whether the key 1 has been input (step 202). At this time, if it is determined that the key 1 is input, the volume control unit 13 increases the volume of f1 and simultaneously the microcomputer 15 raises the OSD bar peep of f1 as shown in FIG. 3 (step 203).

On the other hand, if it is determined that the key 2 is input (step 204), the volume control unit 13 lowers the volume of f1, and simultaneously the microcomputer 15 lowers the OSD bar graph of f1 (step 205). ). And if it is determined that the key 3 is input (step 206), the volume of f2 and the OSD bar graph of f2 are up (step 207), and if it is determined that the key 4 is input (step 208), the volume of f2 and Down the OSD bar graph of f2 (step 209). If it is determined that the key 5 is input (step 210), the volume of f3 and the OSD bar graph of 13 are turned up (step 211), and if it is determined that the key 6 is input (step 212), the volume of f3 And down the OSD bar graph of f3 (step 213), and if it is determined that the key 7 is input (step 214), the volume of f4 and the OSD bar graph of f4 are up (step 215), and the key 8 Is determined (step 216), the volume of f4 and the OSD bar graph of f4 are down (step 217).

Meanwhile, the equalized graphic display in the OSD is performed as shown in FIG. That is, when the equalizing key is input through the key input unit 14 (step 401), the reference voltage Vref of the corresponding frequency is obtained (step 402). At this time, the reference voltage Vref becomes Sound max (Vp-p) / 5. In this case, dividing by 5 is because 5 OSD graph bars of equalization are assumed. Therefore, if the reference voltage Vref is greater than or equal to 0 and less than or equal to 1 / 10Vmax (0 ≦ Vref ≦ 1 / 10Vmax) (step 403), only 0 OSD bars of the corresponding frequency are displayed (step 404). If the voltage Vref is greater than or equal to 1 / 10Vmax and less than or equal to 1 / 5Vmax (1 / 10Vmax ≦ Vref ≦ 1 / 5Vmax) (step 405), one OSD bar of the frequency is shown (step 406). And if the reference voltage Vref is greater than or equal to 1 / 5Vmax and less than or equal to 2 / 5Vmax (1 / 5Vmax ≦ Vref ≦ 2 / 5Vmax) (step 407). Two OSD bars of that frequency are displayed (step 408).

If the reference voltage Vref is greater than or equal to 2 / 5Vmax and less than or equal to 3 / 5Vmax (2 / 5Vmax≤Vref≤3 / 5Vmax) (step 409), three OSD bars of the corresponding frequency are displayed (step 410). ). If the reference voltage Vref is greater than or equal to 3 / 5Vmax and less than or equal to 415Vmax (3 / 5Vmax ≦ Vref ≦ 4 / 5Vmax) (step 411), four OSD bars of the corresponding frequency are displayed (step 412). If the reference voltage Vref is greater than or equal to 4 / 5Vmax and less than or equal to Vmax (4 / 5Vmax ≦ Vref ≦ Vmax) (step 413), five OSD bars of the corresponding frequency are displayed (step 414).

If it is observed that equalization has not been entered by observing whether a key has been entered, the flow returns to step 403 to maintain the current state. In this case, the frequencies f1, f2, f3, and f4 separated by the equalization processor 12 are all applied to the same process as in FIG. 5.

As described above, according to the equalization display circuit in a television according to the present invention, by providing an equalization function to a television, a user can listen to a tone to his or her taste without purchasing an equalization system separately, and use a remote controller. It can be adjusted to provide convenience.

In addition, the equalization status can be displayed to the user using the OSD to visually check the equalization status, so that music and other broadcasts can be enjoyed more vividly as in audio.

Claims (2)

Equalization processing means for separating the audio signal tuned by the tuner into a predetermined number of frequencies; key input unit input means having a plurality of equalizing keys for adjusting up / down of the frequency separated by the equalization processing means; ; Volume control means for adjusting and outputting a volume of a corresponding frequency by an equalizing key of the key input means; An equalization display circuit in a television comprising a microcomputer for up / down adjusting on-screen display bar graphs on a screen according to the output of the volume control means. An equalization display circuit as set forth in claim 1, wherein said key input means comprises a remote control and a key panel attached to a television.