KR100251060B1 - Apparatus for displaying osd in wide scene mode & double scene mode - Google Patents

Abstract

PURPOSE: An OSD display apparatus in a wide screen mode and a double screen mode is provided to prevent a wide screen and a double screen from being hidden by an OSD screen by displaying an OSD screen in an upper part or a lower part of a TV screen. CONSTITUTION: A high frequency signal transmitted from an antenna(100) is approved to a main tuner circuit unit(110). The main tuner circuit unit(110) amplifies an image signal of a selected channel and changes the image signal into a middle frequency by mixing with an oscillation frequency. A middle frequency amplifying unit(120) is connected to the main tuner circuit unit(110). The middle frequency amplifying unit(120) amplifies a middle frequency to a specific extent appropriate for displaying on a picture tube(220). A switching unit(190) is connected to the middle frequency amplifying unit(120). The switching unit(190) performs a switching function to approve a main image signal demodulation unit(200) or a PIP signal processing unit(180) in accordance with a control signal from a micom(140).

Description

OSD display device in wide screen mode and double screen mode

The present invention relates to an OSD display device in a wide screen mode and a double screen mode, and more particularly, when watching a wide screen or a double screen in which the entire screen is smaller than a general television (aspect ratio 4: 3). The present invention relates to an OSD display device in a wide screen mode and a double screen mode in which an OSD screen is displayed on an upper part or a lower part of a television screen so that the main screen is not hidden.

In general, a television receives a high frequency signal transmitted from a broadcasting station through an antenna and displays it on a screen. The color light of a subject sent to an image pickup tube is divided into RGB signals and made into a YIQ signal in a matrix circuit. In order to easily separate the YIQ signal from the receiving side, the I and Q signals pass through a balance modulator, respectively, to be changed in phase, and then transmitted by mixing color burst signals, horizontal / vertical synchronization signals, and voice signals. do. The transmitted composite video signal is received through an antenna and amplified through a high frequency amplification step to increase sensitivity and selectivity, improve S / N ratio, and increase output. In addition, YIQ signals are obtained through a series of processes such as image detection step and band amplification step, and these signals are synthesized at a constant ratio and reproduced as RGB signals, respectively, and formed into scanning beams by RGB electron guns, respectively. The image transmitted from the transmitting side is displayed while scanning the RGB fluorescent surface past the aperture grille.

1 is a block diagram showing a television having a general PIP function.

Referring to FIG. 1, a high frequency amplification process is performed on a video signal of a channel selected for display on a main screen among high frequency signals received through the antenna 10, and amplified by mixing with an oscillation frequency oscillated by the channel being tuned. A main tuner circuit 20 for converting the intermediate frequency into easy to amplify and generating a composite video signal; A main IC 70 for demodulating and outputting the composite video signal corresponding to the channel selected by the main tuner circuit 20 to be displayed on the water pipe 80; A sub-tuner circuit unit 30 for selecting a high frequency signal corresponding to a channel to be displayed on a sub-screen among the high frequency signals received through the antenna 10 and amplifying the intermediate frequency to generate a composite image signal through a series of processes; A switching unit 60 connected to the main tuner circuit unit 20 and configured to switch a composite video signal applied from the main tuner circuit unit 20 to the PIP signal processing unit 50 or the main IC 70; It is connected to the sub-tuner circuit unit 30 and the switching unit 60, and mixes all the composite image signals applied from the sub-tuner circuit unit 30 and the switching unit 60 through the switching unit 60 through the main IC ( PIP signal processing unit 50 to be applied to 70; And a signal connected to the main tuner circuit unit 20, the sub tuner circuit unit 30, the main IC 70, the PIP signal processing unit 50, and the switching unit 60 and applied from an external button unit (not shown). The main tuner circuit 20, the sub tuner circuit 30, the main IC 70, the PIP signal processor 50, and the microcomputer 40 for controlling the operation of the switching unit 60 are included.

When the viewer selects the double screen mode using the screen selection button of the button unit while watching a television having the PIP function, the double screen composed of the main screen and one sub screen is displayed, and the wide screen mode is selected. Compared to the normal screen, the wide screen appears by reducing the screen length along the vertical axis. Accordingly, when the double screen and the wide screen are displayed, the size of the screen is reduced than that of the normal screen, so that the wide screen and the double screen are obscured by the OSD screen.

The present invention has been made to solve the above problems, and by using the OSD function of the television screen to display the OSD screen on the upper or lower portion of the television screen in the double screen mode and wide screen mode due to the OSD screen double screen and wide An object of the present invention is to provide an OSD display device in a double screen mode and a wide screen mode to prevent the screen from being hidden.

1 is a block diagram showing a television having a general PIP function;

2 is a block diagram illustrating an OSD display device in a wide screen mode and a double screen mode according to the present invention;

3 is a block diagram of an OSD generator, which is a main part of FIG. 2;

4A is a view illustrating that an OSD screen is displayed on a general screen;

Figure 4b is an exemplary view showing that the OSD screen is displayed in the wide screen mode according to the present invention,

Figure 4c is an exemplary view showing that the OSD screen is displayed in the double screen mode according to the present invention,

4D is an exemplary diagram illustrating BLUE BACK processing when the OSD screen is not displayed.

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

10, 100: antenna 20, 110: main tuner circuit

30, 130: sub-tuner circuit 40, 140: microcomputer

50, 180: PIP signal processing unit 60, 190: switching unit

70, 200: main video signal demodulator 80, 220: water pipe

120: intermediate frequency amplifier 151: OSD screen display button

152: OSD removal button 160: Memory section

171: converter 172: register

173: OSD output section 210: the water pipe drive

R1, R2, R3, R4: Resistance

In order to achieve the above object, the present invention comprises: a main tuner circuit unit for converting an image signal of a channel selected for display on a main screen among high frequency signals received through an antenna into an intermediate frequency; An intermediate frequency amplifier for amplifying the high frequency signal outputted from the main tuner circuit into a signal suitable for display on the water pipe; A sub-tuner circuit unit which selects a high frequency signal received through an antenna and displays an image signal on a sub-screen displayed on the screen of the receiver; A switching unit connected to the intermediate frequency amplifier and configured to switch a complex video signal applied from the intermediate frequency amplifier to a PIP signal processor or a main video signal demodulator; A PIP signal processing unit connected to the sub-tuner circuit unit and the switching unit and mixing all composite video signals applied from the sub-tuner circuit unit and the switching unit to be applied to the main image signal demodulation unit through the switching unit; A microcomputer connected to the main tuner circuit unit and the sub tuner circuit unit, and reading out the magnification and position information data of the OSD screen stored in the memory unit and applying it to the OSD generating unit; A remote controller for generating an OSD display signal and a removal signal to the microcomputer; An OSD display device is provided in a wide screen mode and a double screen mode, each of which includes an OSD generator for displaying an OSD screen on the receiving tube by a control signal applied from the microcomputer.

According to the present invention, the OSD display signal generated from the OSD display button 150 of the remote controller 150 is applied to the microcomputer 140, the microcomputer 140 is the magnification of the OSD screen from the memory unit 160 And position information data is read and applied to the OSD generator 170. Accordingly, the OSD generator 170 displays the OSD screen by appropriately adjusting the size and position of the OSD screen with the magnification and position information data of the OSD screen applied from the microcomputer 140, thereby displaying a double screen and a double screen by the OSD screen. The screen can be prevented from being hidden.

2 is a block diagram illustrating an OSD display device in a wide screen mode and a double screen mode according to the present invention.

Referring to FIG. 2, the high frequency signal received through the antenna 100 is applied to the main tuner circuit unit 110, and the main tuner circuit unit 110 of the channel tuned for display on the main screen among the high frequency signals. In addition to the high frequency amplification processing of the video signal, the channel is tuned and mixed with the oscillation frequency that is oscillated to convert to an intermediate frequency that is easy to amplify. An intermediate frequency amplifier 120 is connected to the main tuner circuit 110, and the intermediate frequency amplifier 120 is suitable for displaying an intermediate frequency applied from the main tuner circuit 110 on the water pipe 220. Amplify to size. The switching unit 190 is connected to the intermediate frequency amplification unit 120, and the switching unit 190 is the main video signal demodulation unit 200 according to a control signal of the microcomputer 140 applied from the main tuner circuit unit 110. Alternatively, the switching function may be applied to the PIP signal processor 180.

The high frequency signal received through the antenna 100 is applied to the sub-tuner circuit unit 130, and the sub-tuner circuit unit 130 is applied to the sub-screen of the water pipe 220 in the high frequency signal applied from the antenna 100. For display, the corresponding channel is tuned to convert the high frequency signal into an intermediate frequency, amplify, and output a composite video signal. PIP signal processing unit 180 is connected to the sub-tuner circuit unit 130 and the switching unit 190, the PIP signal processing unit 180 is all the composite applied from the sub-tuner circuit unit 130 and the switching unit 190 The video signals are mixed and applied to the main video signal demodulator 200 through the switching unit 190.

In addition, the microcomputer 140 is connected to the main tuner circuit unit 110 and the sub-tuner circuit unit 120, and the microcomputer 140 is connected to a signal generated from the OSD display button 151 of the remote controller 150. The magnification and position information data corresponding to the OSD screen stored in the memory unit 160 is read out and applied to the OSD generating unit 160, and the main image signal demodulation unit 200 according to the signal generated from the OSD removing button 152. The blue back processing signal for displaying the background screen of the area where the 0SD screen is displayed in blue is applied.

The main video signal demodulator 200 is connected to the switching unit 190, and the main video signal demodulator 200 receives and processes a blue back processing signal from the microcomputer 140.

The memory unit 160 is connected to the microcomputer 140, and the memory unit 160 stores magnification and position information data corresponding to the OSD screen. An OSD generator 170 is connected to the micom 140, and the OSD generator 170 is a position at which the OSD screen is displayed according to the magnification and position information data signals of the OSD screen applied from the microcomputer 140. And adjust the size of the OSD screen suitable for the area where the OSD screen is to be displayed and apply it to the main image signal demodulator 200.

According to the present invention, the OSD display button 151 of the remote controller 150 is selected by the viewer when the screen is switched from the normal screen to the wide screen mode and the double screen mode, and the signal is generated from the remote controller 150. Is applied to the microcomputer 140 through a signal receiver (not shown) mounted in the system of the television. The microcomputer 140 receiving the signal generated from the remote controller 150 reads the magnification data and the position information data of the OSD screen stored in the memory unit 160 and applies them to the OSD generator 170. Therefore, the OSD generating unit 170 displays the OSD screen in the upper and lower blank areas where the wide screen and the double screen are not displayed, based on the magnification data and the location information data of the OSD screen applied from the microcomputer 140. By setting the position to be displayed and adjusting the size properly, the wide screen and the double screen can be prevented from being hidden by the OSD screen. In addition, when the viewer selects the OSD removal button 152 to generate the OSD removal signal, the microcomputer 140 receives the OSD removal signal through the signal receiver of the television to correspond to the OSD screen from the memory unit 160. Instead of reading the magnification and position information data, the blue back processing signal is applied to the main video signal demodulator 200. Accordingly, the main image signal demodulator 200 may receive the blue back processing signal output from the microcomputer 140 so that only the blue color is displayed in the area where the OSD screen is displayed.

3 is a block diagram of an OSD generator, which is a main part of FIG. 2, by dividing a power supply Vcc by resistors R3 and R4 to receive magnification and position information data corresponding to an OSD screen applied from a microcomputer 140. A converter 171 for converting the output level of the OSD data into a level having a predetermined size; A register 172 for receiving and storing magnification and position information data corresponding to the OSD screen converted by the conversion unit 171; In addition, by inputting the magnification and position information data corresponding to the OSD screen stored in the register 172, the position is set and the size is set so that the OSD screen is displayed in the blank areas of the upper and lower areas where the wide screen and the double screen are not displayed. It is composed of an OSD output unit 173 to be appropriately adjusted to output to the main video signal demodulator 200.

4A is a diagram illustrating sporadically displaying an OSD screen on a general screen, and FIGS. 4B and 4C show an OSD screen on an area where a wide screen is not displayed when a wide screen mode is switched from a general screen according to the present invention. For example, the OSD screen is not displayed on the wide screen and the double screen which are main screens. 4D is an exemplary diagram illustrating blue back processing of an area where an OSD screen is displayed when the OSD screen is not displayed by the OSD removal signal.

As described above, the present invention reads the OSD magnification and position information data stored in the memory unit by receiving the signal generated from the OSD display button of the remote controller when the micro screen is switched to the wide screen mode and the double screen mode from the general screen. By applying the OSD to the OSD generator and adjusting the size and position so that the OSD screen is displayed in the area where the wide screen and the double screen is not displayed, the inconvenience that the wide screen and double screen is covered by the OSD screen is eliminated. It works. In addition, when the OSD screen is not displayed, the area where the OSD screen is displayed is blue-backed to clean the entire screen and provide visual comfort.

Claims (3)

A main tuner circuit unit 110 and a sub tuner circuit unit 130 for receiving a high frequency signal through the antenna 100; An intermediate frequency amplifier 120 for amplifying a high frequency signal output from the main tuner circuit 110 into a signal suitable for display on the water pipe 220; A switching unit 190 for switching a complex image signal applied from the intermediate frequency amplifier 120 to the PIP signal processor 180 or the main image signal demodulator 200; PIP consisting of a PIP signal processor 180 for mixing all the composite video signal applied from the sub-tuner circuit unit 130 and the switching unit 190 to be applied to the main image signal demodulation unit 200 through the switching unit 190 In a television having a function, A microcomputer 140 connected to the main tuner circuit unit 110 and the sub tuner circuit unit 130 to read the magnification and position information data of the OSD screen stored in the memory unit 160 and apply the read-out data to the OSD generating unit 170; A main video signal demodulator (200) configured to receive and process a blue back processing signal from the microcomputer (140); The OSD display device in the wide screen mode and the double screen mode, characterized in that composed of the OSD generation unit 170 for receiving the magnification and position information data of the OSD screen from the microcomputer 140 to output to the main video signal demodulation unit 200 . The display device of claim 1, wherein the OSD generator 170 receives the magnification and position information data corresponding to the OSD screen applied from the microcomputer 140 by dividing the power supply Vcc by the resistors R3 and R4. A conversion unit 171 for converting the output level of the OSD data into a level having a predetermined size, a register 172 for receiving and storing magnification and position information data corresponding to the OSD screen converted by the conversion unit 171; By inputting the magnification and position information data corresponding to the OSD screen stored in the register 172, the position is set and sized so that the OSD screen is displayed on the blank areas of the upper and lower portions, which are areas where the wide screen and the double screen are not displayed. The OSD display device in the wide screen mode and the double screen mode, characterized in that consisting of an OSD output unit (173) to be properly adjusted to output to the main video signal demodulator (200). According to claim 1, The microcomputer 140 receives the OSD removal signal through the signal receiving unit of the television when the OSD removal button 152 is selected by the viewer to generate the OSD removal signal OSD from the memory unit 160 An OSD display device in a wide screen mode and a double screen mode, wherein a blue back processing signal is applied to the main video signal demodulator 200 instead of reading magnification and position information data corresponding to a screen.

Images