KR19990053560A - TV's Comprehensive OSD Output - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a general OSD output device of a television, and more particularly, to an apparatus for displaying OSD screens of various colors and shapes that enable all menu settings within one screen. According to the present invention, when a menu setting signal is input from a remote controller, a microcomputer that detects this applies a digital conversion control signal to an A / D conversion unit so that the RGB image signal applied from the main image processing IC is an 8-bit RGB digital video signal. In addition, the 8-bit character and picture data stored in advance are output by applying a read enable signal (RE) to the ROM, and a switching control signal is applied to the mixer unit receiving the 8-bit character. By setting the RGB digital video signal and 8-bit character and picture data, the OSD screen of various colors and shapes can be displayed on the screen of the television so that each menu setting and adjustment is possible within one screen. It is possible to eliminate the inconvenience and hassle of making adjustments several times and to satisfy various preferences of the user. It presents a comprehensive OSD output device.

Description

Comprehensive OSD Output Device for Television

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a general OSD output device of a television, and more particularly, to an apparatus for displaying OSD screens of various colors and shapes that enable all menu settings within one screen.

In general, a method of implementing an OSD on a screen of a television uses a circuit having the configuration as shown in FIG. 1.

That is, the circuit includes a key input unit 40 composed of a remote controller, a microcomputer 30 that receives an input signal from the key input unit 40 and applies a control signal to the character display signal generator 20, and a tuner (not shown). TV image signal processor 10 for processing the composite image signal input through the video signal processor 10, the character signal generated by the character display signal generator 20 and the image signal output from the TV image signal processor 10 An adder 50 for mixing and providing to the CRT driving unit 60 and a CRT 70 for displaying the mixed signal of the CRT driving unit 60 described above.

Looking at the method of implementing the display of the OSD menu screen on the screen in a television having a general OSD function as described above, the OSD output key signal is output from the key input unit 40 in the state that the television operates normally, the microcomputer ( 30), the microcomputer 30 applies the OSD data signal to the character display signal generator 20, and the character display signal generator 20 can perform volume adjustment, screen adjustment, and voice adjustment, respectively. The OSD menu setting screen signal is output to be displayed on the CRT 70.

However, in the television having the general OSD function as described above, the OSD screens for menu setting and adjustment are displayed respectively so that one menu OSD screen must be displayed and adjusted, and then another menu OSD screen must be displayed and adjusted. There is a problem in that the inconvenience and hassle of operation that must be performed several times for the setting, the color and the shape is limited to satisfy various preferences of the user.

Accordingly, the present invention has been made in view of the above-described problems, and an object thereof is to solve these problems. An object of the present invention is to store 8-bit characters and picture data in a ROM in advance, and then digitally under the control of a microcomputer. The present invention provides a comprehensive OSD output device for a television that displays a menu screen with various colors and shapes that can be adjusted at the same time as the menu setting items are displayed on the screen of the television.

The technical idea of the present invention for achieving the above object of the present invention is that the A / D conversion means digitally converts the video signal output from the main image processing IC 300 into 8-bit quantized bits, and the memory means displays the OSD screen. Each of the 8-bit RGB digital video signals outputted from the A / D conversion means and the memory means in accordance with a control signal of the control means And 8-bit RGB characters and picture data are output by switching to display OSD screens of various colors and shapes in which all menu settings can be realized on one screen.

1 is a block diagram of a television circuit implementing a typical OSD.

Figure 2 is a block diagram showing a comprehensive OSD output device of a television according to the present invention.

3 is an exemplary view of an OSD screen according to the present invention.

4 is a flowchart for explaining a comprehensive OSD output device of a television of the present invention.

<Description of the symbols for the main parts of the drawings>

10: TV image signal processor 20: character display signal generator

30, 600: microcomputer 40: key input unit

50: adder 60, 500: CRT drive unit

70, 550: CRT 100: Antenna

151: high frequency amplifier 152: mixing unit

153: local oscillation unit 200: IF amplification unit

250: image detector 300: main image processing IC

350: A / D converter 400: mixer

450: D / A converter 650: ROM

701: menu setting button 702: adjustment button

Hereinafter, with reference to the accompanying drawings will be described a specific embodiment for achieving the above object of the present invention.

2 is a block diagram showing a comprehensive OSD output device of a television according to the present invention.

Referring to FIG. 2, the present invention provides a high frequency amplification unit 151 for amplifying a high frequency signal, which is a composite video signal received from an antenna 100, an input signal amplified by the high frequency amplification unit 151, and a local oscillation unit ( A tuner unit 150 including a mixing unit 152 for receiving a local oscillation frequency from the 153 and converting it into an intermediate frequency, and a local oscillating unit 153 for supplying a signal for frequency conversion to the mixing unit 152; IF detection unit 200 for intermediate frequency amplification of the composite image signal applied from the tuner unit 150 and image detection for extracting an image signal from the intermediate image amplification applied with the intermediate frequency from the IF amplification unit 200. A main image processing IC 300 for outputting the image signal output from the image detection unit 250 by luminance processing and color signal processing;

A / D converter 350 for digitally converting a video signal output from the main image processing IC 300 by receiving a control signal of the microcomputer 600 to be described later, and A according to the control signal of the microcomputer 600. The mixer unit 400 receives the digital image signal and the RGB data from the converter 350 and the ROM 650, and the analog converter receives the output signal from the mixer 400. An A conversion unit 450 and a CRT driver 500 for converting the signal output from the D / A conversion unit 450 into a signal suitable for display on the CRT 550;

ROM (650) for storing 8-bit RGB text data and picture data, and data stored in the ROM (ROM) 650 is output to the mixer 400 according to a signal input from the remote controller 700. Microcontroller 600 for controlling, and a remote controller 700 is provided with a menu setting button 701 and an adjustment button 702 for generating a Matthew setting signal and an adjustment signal, respectively, by the user's button operation.

Hereinafter, the operation according to an embodiment of the present invention made as described above will be described in detail.

First, the high frequency signal received from the antenna 100 of the television is matched with the input impedance of the high frequency amplifier 151 and the characteristic impedance of the feed line through an input circuit (not shown) of the tuner 150. The high frequency amplifying unit 151 outputs the high frequency amplifying unit 151 to increase the gain of the received high frequency signal, improve selectivity, and prevent image disturbance. In addition, the S / N ratio is improved, and the local oscillation frequency output from the local oscillator 153 is prevented from being radiated to the antenna 100 to affect other receivers.

In addition, the signal amplified by the high frequency amplifier 151 and the frequency output from the local oscillator 153 are input to the mixer 152, the mixer 152 mixes the high frequency signal and the local oscillation frequency To generate an intermediate frequency corresponding to the difference between the two frequencies.

In addition, the intermediate frequency signal output from the tuner unit 150 is amplified through the amplification process of the IF amplifier 200, and then output to the image detector 250, and the image detector 250 is the intermediate frequency. After detecting only an image signal among the signals, the image signal is output to the main image processing IC 300, and the main image processing IC 300 is a color signal (C signal) and a luminance signal with respect to the image signal output from the image detector 250. After the (Y signal) is separated and synthesized with the burst signal, the color difference signals RY and BY are detected and amplified to generate an image signal as a primary color signal, and output to the A / D converter 350.

Here, when the menu setting button 701 of the remote controller 700 is operated by the user, the menu setting signal generated from the remote controller 700 is transmitted to a signal receiving unit (not shown) formed in the system of the television. Input, which is detected by the microcomputer 600.

The microcomputer 600 detecting the menu setting signal as described above applies the digital conversion control signal and the switching control signal to the A / D converter 350 and the mixer 400, respectively, and the main image processing IC ( By counting the horizontal synchronizing signal and the vertical synchronizing signal of the video signal output from 300, the display start data of the position where the OSD screen will be displayed is determined, and the read enable signal RE is applied to the ROM 650 in advance. The stored 8-bit character and picture data are output to the mixer 400.

That is, the A / D converter 350 digitally converts the RGB image signal output from the main image processing IC 300 to the number of 8-bit quantization bits by the digital conversion control signal of the microcomputer 600. The ROM 650 outputs the RGB characters and the picture data, each of which is composed of 8 bits necessary to implement various shapes and colors of the OSD screen, to the mixer 400.

The mixer 400 receives 8-bit RGB digital video signals, 8-bit RGB text data, and image data output from the A / D converter 350 and the ROM 650. The switching processing is performed according to the high (H) and low (L) switching control signals of 600 to output to the D / A converter 450.

Accordingly, the D / A converter 450 converts the signal processed by the mixer 400 into analog and displays an OSD screen as illustrated in FIG. 3 below at a display position determined by the microcomputer 600. To be displayed. In addition, after the OSD screen is displayed, the user adjusts as desired for each setting item by operating the adjustment button 702 provided in the remote controller 700.

Hereinafter, with reference to the accompanying Figure 3 will be described the configuration of the OSD screen displayed on the screen of the television.

The OSD screen is composed of three blocks: a main setting item, a sub setting item, and an adjustment item. The main setting item includes items having different categories such as screen, voice, channel, and time setting. A specific item obtained by dividing each of the setting items in detail is located, and the adjustment items are formed with pictures and texts that visually display the adjustment status for each setting item performed by the user.

In addition, the OSD screen color and shape, and the color and shape of the text can be changed by the combination of the 8-bit text and picture data stored in the ROM 650, in a different form than the example of FIG. Is also displayed.

4 is a flowchart illustrating a comprehensive OSD output device of a television of the present invention, in which the power supply of the television is switched on (S10) and the power supply switching step (S10). After the switching is on, a menu for determining whether a menu setting signal is applied while a broadcast program is output in a broadcast program output step (S20) and a broadcast program is output in the broadcast program output step (S20). A setting signal application discrimination step (S30), a menu setting signal is applied in the menu setting signal application discrimination step (S30), the sensing step (S40) is detected by the microcomputer 600, and the television after the detection step (S40) A / D conversion step (S50) and storage data output step (S60), and the A / D conversion step (S50) and stored data output, respectively, in which digital conversion of an image signal and output of data stored in the ROM 650 are executed. Step (S 60, a mixing step (S70) in which the signals output from the mixing process are mixed, a D / A conversion step (S80) in which the signals output in the mixing step (S70) are analog-converted, and the D / A conversion step ( A menu setting screen output step (S90) through which the OSD menu setting screen is output through S80).

Hereinafter, an operation after the menu setting signal application determining step S30 will be described with reference to the accompanying drawings.

First, a menu setting signal input from the remote controller 700 by a user's menu setting button 701 is detected by the microcomputer 600, and the microcomputer 600 includes an A / D converter 350 and a mixer. The digital conversion control signal and the switching control signal are respectively applied to the unit 400, and the A / D conversion unit 350 converts the RGB image signal applied from the main image processing IC 300 into an 8-bit RGB digital image signal. After converting to the output to the mixer 400.

In addition, the microcomputer 600 applies a read enable signal (RE) to the ROM 650 so that 8-bit characters and picture data stored in advance are output to the mixer 400, and the main image processing is performed. The display starting position of the OSD screen is determined by counting the horizontal synchronizing signal and the vertical synchronizing signal of the image signal output from the IC 300.

Therefore, the mixer 400 mixes 8-bit RGB digital video signals, 8-bit RGB characters, and picture data output from the A / D converter 350 and the ROM 650, respectively. The switching process is performed according to the switching control signal of 600 to perform the analog conversion process of the D / A converter 450, and then display it on the CRT 550.

As described above, in the present invention, when the menu setting signal is input from the remote controller, the microcomputer that detects this applies the digital conversion control signal to the A / D conversion unit so that the RGB image signal applied from the main image processing IC is 8 bits. In addition to converting into RGB digital video signals, 8-bit text and picture data required to implement various colors and shapes of the pre-stored OSD screen are output by applying a read enable signal (RE) to the ROM. By applying a switching control signal to the mixer unit to be applied, the two signals are switched to display an OSD screen having various colors and shapes so that each menu setting and adjustment is possible on a screen of the television. User's preferences while eliminating the inconvenience and hassle of performing many menu settings and adjustments It is effective to satisfy.

Claims (2)

In a television that displays menu setting items such as screen and audio adjustment on a single OSD screen, A / D conversion means for digitally converting a video signal output from the main video processing IC 300 of the television to a predetermined number of quantized bits and outputting the digital signal; Memory means for storing respective RGB characters and picture data necessary for forming the OSD screen; Switching processing means for switching and outputting each of the RGB digital video signals, RGB characters and picture data output from the A / D conversion means and the memory means, and And control means for controlling the OSD screen to be output by applying a control signal to the A / D converting means, memory means and switching processing means. According to claim 1, OSD screen displayed on the CRT (550) of the television is a specific item that is divided into each of the main setting items, the main setting items in which the categories of different categories, such as screen, voice, channel and time setting, respectively It consists of three blocks of sub-item items in which the items are located and adjustment items in which pictures and texts are displayed to visually display the adjustment status of each setting item by the user. Each menu setting and adjustment is performed within one screen. Comprehensive OSD output for televisions featuring a variety of shapes and colors.