KR100364733B1 - Apparatus control for analog/digital OSD of digital TV - Google Patents

Abstract

An analog / digital OSD control apparatus for a digital TV, comprising: a signal separation unit for separating video MPEG data from an input digital broadcast signal; Decode the video MPEG data separated by the signal separation unit and mix with the internal OS graphics data, and output the mixed RGB data signal according to the internal synchronization signal or the synchronization signal for analog broadcasting, according to the internal synchronization signal An MPEG / Graphics unit for outputting a CVBS signal; A tuning / VIF unit for tuning and detecting an analog broadcast signal and outputting an A_CVBS signal for synchronous detection; A video switching unit for selectively outputting one of a D_CVBS or A_CVBS signal and an external input signal generated by the tuning / VIF unit and the MPEG / graphic unit according to a user's broadcast selection; A video chroma deflection processor configured to process an OSD RGB image signal output from the MPEG / graphic unit in synchronization with a signal (D_CVBS, A_CVBS or an external input signal) output from the video switching unit and output the CSD signal to a CRT; And control the video switching unit to output the corresponding CVBS signal according to the user's broadcast selection, and process the video chroma deflection to process the OSD RGB image signal output from the MPEG / Graphics unit according to the signal output to the video switching unit. It is designed to include a microcomputer that controls the processing unit, so it is possible to meet the user's visual needs by improving digital reliability regardless of analog and digital broadcasting.

Description

Apparatus control for analog / digital OSD of digital TV}

The present invention relates to a digital TV, and more particularly, to an analog / digital OSD control apparatus for a digital TV.

In general, TV is a device that enables viewers to watch a broadcast signal containing a broadcast program through a series of signal processing, and is the most popular among the rapidly developing multimedia devices that can access various information through viewing regardless of age or class. Multimedia media.

Hereinafter, an analog / digital OSD control apparatus of a digital TV according to the prior art will be described with reference to the accompanying drawings.

1 is a block diagram showing the configuration of the analog TV / digital OSD control apparatus of the digital TV according to the prior art, Figure 2 is a block diagram showing a detailed configuration of the MPEG / graphics shown in FIG.

As shown in FIG. 1, an analog TV / digital OSD control apparatus of a digital TV according to the prior art receives a predetermined digital broadcast signal, and performs tuning and coded orthogonal frequency division multiplexing (COFDM) demodulation to process a predetermined transport stream. An output coded orthogonal frequency division multiplexing (COFDM) unit 10, a signal separation unit 20 for separating data such as audio and video from a predetermined transport stream output from the COFDM unit 10, Receives predetermined video MPEG data separated by the signal separation unit 20, decodes the predetermined video MPEG data into a predetermined signal, and processes the predetermined D_CVBS and RGB image signals generated by mixing the decoded predetermined signal and the predetermined OS graphics data. Of the MPEG / Graphics unit 30 to output as the internal synchronization signal is inputted, and a predetermined analog broadcast signal is received and tuned and A tuning / VIF unit 40 for detecting and detecting a predetermined A_CVBS signal, a predetermined D_CVBS signal output from the MPEG / graphic unit 30 and a predetermined A_CVBS signal detected by the tuning / VIF unit 40; If a video switching unit 50 for receiving a predetermined AV_CVBS signal, which is an external input signal, and switching the corresponding CVBS signal according to a user's request, and a predetermined CVBS signal switched by the video switching unit 50 are input, A video chroma deflection processing unit 60 for outputting an OSD (or UI) RGB video signal of the control unit, and controls the video switching unit 50 and each system so that a predetermined CVBS signal is switched according to a user's request. The microcomputer 70 controls a predetermined OSD RGB image signal corresponding to the CVBS signal to be output from the video chroma deflection processing unit 60.

As shown in FIG. 2, the MPEG / Graph unit 30 receives an MPEG decoder 31 that receives predetermined video MPEG data separated by the signal processing unit 20 and decodes the predetermined MPEG video into a predetermined signal. A graphics generator 32 for generating SD (or UI) graphic data, a synchronization generator 34 for generating a predetermined internal horizontal / vertical synchronization signal, and a decoder decoded by the MPEG decoder 31. Since the adder 33 for mixing the predetermined signal and the predetermined OS graphics data generated by the graphic generator 32 and the synchronization generator 34 generates a predetermined internal horizontal / vertical synchronization signal, Accordingly, a predetermined internal horizontal / vertical synchronization signal is generated from the RGB encoder 35 which encodes a predetermined signal mixed by the adder 33 and outputs a predetermined OSD RGB image signal, and the synchronization generator 34. According to above RGB It consists of a CVBS encoder 36 for signal processing a predetermined signal encoded by the encoder 35 and outputting a predetermined CVBS signal.

Referring to the operation of the analog TV / digital OSD control device of the digital TV according to the prior art configured as described in detail as follows.

As shown in FIG. 1, the COFDM unit 10 receives a predetermined digital broadcast signal and outputs a predetermined transport stream through tuning and COFDM demodulation.

Subsequently, the signal processor 20 receives a predetermined transport stream output from the COFDM unit 10, separates data such as audio and video from the transport stream, and MPEG-prepares the separated predetermined video MPEG data. / To the graphics unit 30.

As shown in FIG. 2, the MPEG decoder 31 of the MPEG / Graph unit 30 receives predetermined video MPEG data separated by the signal processing unit 20, and outputs the predetermined MPEG MPEG processing.

The graphic generator 32 generates predetermined OS graphics data.

Subsequently, the adder 33 processes the predetermined signal decoded by the MPEG decoder 31 and the predetermined OSD graphics data generated by the graphic generator 32 and applies the mixed signal to the RGB encoder 35.

Here, when a predetermined internal horizontal / vertical synchronization signal is generated from the synchronization generator 34, the RGB encoder 35 encodes a predetermined signal applied from the adder 33 to the video chroma deflection processor 60. Sends an RGB video signal of

In addition, when a predetermined internal horizontal / vertical synchronization signal is generated by the synchronization generator 34, the CVBS encoder 36 receives a predetermined signal encoded by the RGB encoder 35 to process a predetermined D_CVBS 0. And a D_CVBS signal.

On the other hand, the tuning / VIF unit 40 receives a predetermined analog broadcast signal, tunes and detects it, and detects a predetermined A_CVBS signal for synchronous detection.

Subsequently, the video switching unit 50 respectively supplies a predetermined D_CVBS 1 signal detected by the MPEG / Graph unit 30, a predetermined A_CVBS signal detected by the tuning / VIF unit 40, and a predetermined AV_CVBS signal that is an external input. It receives an input and selects and switches a predetermined CVBS signal according to the control signal of the microcomputer 70.

That is, when the user selects the digital broadcast, the microcomputer 70 controls the predetermined D_CVBS 1 signal to be switched from the video switching unit 50, and transmits the output D_CVBS1 signal to the video chroma deflection processing unit 60. do.

Subsequently, the video chroma deflection processing unit 60 receives the D_CVBS 1 signal switched by the video switching unit 50, and when the corresponding D_CVBS1 signal is input using the synchronization signal, is output from the MPEG / Graph unit 30. It receives digital OS RGB video signal and transmits it to CPT (not shown).

Meanwhile, when the user selects the analog broadcast, the microcomputer 70 controls the analog broadcast signal selected by the user to be tuned and detected by the tuning / VIF unit 40.

The video switching unit 50 receives a predetermined A_CVBS signal tuned and detected from the tuning / VIF unit 40 and detects the corresponding A_CVBS signal according to the control signal of the microcomputer 70 to switch the video chroma. Transmission to the deflection processing unit 60.

Here, when the corresponding A_CVBS signal is input by using the predetermined A_CVBS signal switched by the video switching unit 50 as a synchronization signal, the video chroma deflection processing unit 60 according to the control signal of the micom 70 according to the micom ( Receives a predetermined analog OSD RGB image signal output from 70) and transmits it to the CPT (not shown).

In this case, when the analog channel broadcasting is selected by the user, the predetermined analog OSD RGB image signal output from the microcomputer 70 is output from the video chroma deflection processing unit 60 according to the control signal of the microcomputer 70. The analog OSD RGB image signal is input to the video chroma deflection processor 60 by controlling a predetermined analog OSD RGB image signal to be synchronized with a screen on which an analog broadcast signal is displayed. send.

The analog / digital OSD control apparatus of the digital TV according to the related art described above has the following problems.

First, due to the difference in the quality of OSD displayed on the screen according to digital and analog broadcasting, the visual needs of the user cannot be satisfied.

Second, since the MPEG / Graphics unit does not input the analog horizontal / vertical synchronization signal, the recording output synchronization is shaken even during switching to digital and analog.

Therefore, the present invention has been made to solve the above problems, to provide a digital high-quality OS (UI) regardless of digital and analog broadcasting to meet the user's visual needs to improve the reliability of the product, analog And an analog / digital OSD control device of a digital TV to prevent shaking of recording output synchronization even during switching to digital.

1 is a block diagram showing the configuration of a digital TV analog / digital OSD control apparatus according to the prior art

FIG. 2 is a block diagram illustrating a detailed configuration of an MPEG / graphic unit illustrated in FIG. 1.

Figure 3 is a block diagram showing the configuration of the analog / digital OSD control device of the digital TV according to the present invention

4 is a block diagram showing a detailed configuration of the MPEG / graphic unit shown in FIG.

Explanation of symbols for main parts of the drawings

100: COFDM unit 200: signal separation unit

300: MPEG / graphics 400: tuning / VIF

500: video switching unit 600: video chroma deflection processing unit

700: micom

According to an aspect of the present invention, there is provided an analog / digital OSD control apparatus for a digital TV, including: a signal separator for separating video MPEG data from an input digital broadcast signal; Decode the video MPEG data separated by the signal separation unit and mix with the internal OS graphics data, and output the mixed RGB data signal according to the internal synchronization signal or the synchronization signal for analog broadcasting, according to the internal synchronization signal An MPEG / Graphics unit for outputting a CVBS signal; A tuning / VIF unit for tuning and detecting an analog broadcast signal and outputting an A_CVBS signal for synchronous detection; A video switching unit for selectively outputting one of a D_CVBS or A_CVBS signal and an external input signal generated by the tuning / VIF unit and the MPEG / graphic unit according to a user's broadcast selection; A video chroma deflection processor configured to process an OSD RGB image signal output from the MPEG / graphic unit in synchronization with a signal (D_CVBS, A_CVBS or an external input signal) output from the video switching unit and output the CSD signal to a CRT; And control the video switching unit to output the corresponding CVBS signal according to the user's broadcast selection, and process the video chroma deflection to process the OSD RGB image signal output from the MPEG / Graphics unit according to the signal output to the video switching unit. It is configured to include a microcomputer for controlling the processing unit.

The analog / digital OSD control apparatus of the digital TV according to the present invention configured as described above is as follows.

Figure 3 is a block diagram showing the configuration of the analog TV / digital OSD control apparatus of the digital TV according to the present invention, Figure 4 is a block diagram showing a detailed configuration of the MPEG / graphics shown in FIG.

As shown in FIG. 3, an analog / digital OSD control apparatus for a digital TV according to the present invention includes a signal separation unit 200 for separating video MPEG data from an input digital broadcasting signal; Decode the video MPEG data separated by the signal separation unit 200 to mix with the internal graphics graphics data, and output the mixed RGB data signal according to the internal synchronization signal or the analog broadcast synchronization signal and the internal synchronization An MPEG / Graph unit 300 for outputting a CVBS signal according to the signal; A tuning / VIF unit 400 for tuning and detecting an analog broadcast signal and outputting an A_CVBS signal for synchronous detection; A video switching unit 500 for selectively outputting one of a D_CVBS or A_CVBS signal and an external input signal generated by the tuning / VIF unit 400 and the MPEG / graphic unit 300 according to a user's broadcast selection; A video chroma deflection processing unit which processes the OSD RGB image signal output from the MPEG / graphic unit 300 in synchronization with the signal (D_CVBS, A_CVBS or an external input signal) output from the video switching unit 500 and outputs it to the CRT. 600; Then, the video switching unit 500 is controlled to output the corresponding CVBS signal according to the user's broadcast selection, and the OSD output from the MPEG / Graph unit 300 according to the signal output to the video switching unit 500. The microcomputer 700 controls the video chroma deflection processor 600 to process an RGB image signal.

As illustrated in FIG. 4, the MPEG / Graph unit 300 includes a synchronization generator 340 for generating a predetermined internal vertical / horizontal synchronization signal, and a graphic generator for generating predetermined OS graphics data. 320, an MPEG decoder 310 that receives video MPEG data separated by the signal processor 200 and performs MPEG decoding processing, the video MPEG data decoded by the MPEG decoder 310, and the graphic generator 320. An internal horizontal / vertical synchronization signal or the video chroma deflection processing unit generated by the synchronization generator 340 according to the adder 330 for mixing and processing the OSD graphic data generated by the microcomputer 700. A matrix 350 for selectively outputting an analog horizontal / vertical synchronization signal generated at 600 and the corresponding horizontal / vertical synchronization signal output from the matrix 350; An RGB encoder 360 that encodes the mixed signal at 330 to output an OSD RGB image signal, and the RGB encoder 360 according to an internal horizontal / vertical synchronization signal generated by the synchronization generator 340. It is configured to include a CVBS encoder 370 for processing a predetermined RGB image signal output from the and output the CVBS signal.

The operation of the analog TV / digital OSD control apparatus of the digital TV according to the present invention configured as described above is as follows.

First, the COFDM unit 100 receives a predetermined digital broadcast signal and outputs a predetermined transport stream through tuning and COFDM demodulation.

Subsequently, the signal processor 200 receives a predetermined transport stream output from the COFDM unit 100, separates data such as audio and video from the transport stream, and transmits the data to the MPEG / Graph unit 300. .

As shown in FIG. 4, the MPEG decoder 310 of the MPEG / Graph unit 300 receives predetermined video MPEG data separated by the signal processor 200 and decodes the video MPEG data into a predetermined signal.

The graphic generator 320 generates predetermined OS (or UI) graphic data.

Subsequently, the adder 330 mixes the predetermined signal decoded by the MPEG decoder 310 and the predetermined OSD graphics data generated by the graphic generator 320 and transmits the mixed signal to the RGB encoder 360.

Here, the synchronization generator 340 generates a predetermined internal horizontal / vertical synchronization signal and applies it to the matrix 350 and also to the CVBS encoder 370.

Subsequently, the matrix MATRIX 350 is input from the internal horizontal / vertical synchronization signal generated by the synchronization generator 340 and externally, that is, transmitted from the video chroma deflection processor 600 according to the control signal of the microcomputer 700. Selectively outputs analog horizontal / vertical synchronization signals.

In addition, the RGB encoder 360 encodes a predetermined signal transmitted from the adder 330 according to whether an internal or analog horizontal / vertical synchronization signal output from the matrix 350 is input to the video chroma deflection processor 600. Outputs a predetermined OSD RGB video signal.

Subsequently, when the internal horizontal / vertical sync signal generated by the sync generator 340 is input, the CVBS encoder 370 processes a predetermined OSD RGB image signal encoded by the RGB encoder 360 to process a predetermined signal. CVBS signals, that is, D_CVBS 0 and D_CVBS 1 signals are output.

Meanwhile, the tuning / VIF unit 400 receives a predetermined analog broadcast signal, tunes and detects the signal, and applies the predetermined A_CVBS signal to the video switching unit 500.

The video switching unit 500 is a predetermined A_CVBS signal output from the tuning / VIF unit 400 and a predetermined D_CVBS 1 signal output from the MPEG / graphics unit 300 and a predetermined AV_CVBS signal which is an external input signal. Receive each of the input and switch the corresponding input signal according to the control signal of the microcomputer 700 and transmits to the video chroma deflection processing unit 600.

Subsequently, the video chroma deflection processing unit 600 receives a predetermined CVBS signal switched by the video switching unit 500 as a synchronization signal according to the control signal of the microcomputer 700, and when the corresponding CVBS signal is input, the MPEG / The OSD RGB image signal transmitted from the graphic unit 300 is transmitted to the CPT (not shown).

Digital Broadcasting Mode

In this case, when the user selects the digital broadcasting, the microcomputer 700 controls the signal processor 200 to transmit predetermined video MPEG data to the MPEG / Graphics 300.

Then, the MPEG decoder 310 of the MPEG / Graph unit 300 decodes the transmitted predetermined video MPEG data into a predetermined signal and applies it to the adder 330.

The adder 330 mixes a predetermined signal decoded by the MPEG decoder 310 and predetermined OS graphic data generated by the graphic generator 320 and applies the mixed signal to the RGB encoder 360. .

Here, the matrix 350 selects a predetermined internal horizontal / vertical synchronization signal generated by the synchronization generator 340 according to the control signal of the microcomputer 700 and outputs the predetermined internal horizontal / vertical synchronization signal to the RGB encoder 360.

Subsequently, the RGB encoder 360 receives and encodes a mixed signal from the adder 330 as a predetermined internal horizontal / vertical synchronization signal is input from the matrix 350 to the video chroma deflection processor 600. It transmits a predetermined OSD RGB video signal.

In addition, the CVBS encoder 370 receives a predetermined signal of the RGB encoder 360 as a predetermined internal horizontal / vertical synchronization signal generated by the synchronization generator 340 receives a predetermined signal to process the predetermined D_CVBS 0. And a D_CVBS 1 signal.

As a result, the video chroma deflection processing unit 600 transmits a predetermined D_CVBS 1 signal, which is a synchronization signal, from the video switching unit 500 according to the control signal of the microcomputer 700 to the control signal of the microcomputer 700. Accordingly, a predetermined OSD RGB image signal mixed with predetermined OS graphics data output from the MPEG / Graph unit 300 is received and transmitted to the CPT (not shown).

Analog Broadcasting Mode

On the other hand, when the user selects the analog broadcast, the microcomputer 700 controls the predetermined analog broadcast signal selected by the user from the tuning / VIF unit 400 to be tuned and detected, and also detects a predetermined A_CVBS signal. .

When the user selects the analog broadcast, the microcomputer 700 controls the tuning / VIF unit 400 and simultaneously controls the video switching unit 500 and the video chroma deflection processing unit 600.

Subsequently, the video switching unit 500 switches the predetermined A_CVBS signal detected by the tuning / VIF unit 400 according to the control signal of the microcomputer 700 and transmits the predetermined A_CVBS signal to the video chroma deflection processing unit 600.

In this case, when the analog broadcast is selected by the user, the microcomputer 700 controls the video chroma deflection processing unit 600 to apply a predetermined analog horizontal / vertical synchronization signal to the MPEG / graphic unit 300.

As a result, the matrix 350 of the MPEG / Graph unit 300 receives and selects an analog horizontal / vertical synchronization signal applied from the video chroma deflection processing unit 600 according to the control signal of the microcomputer 700. The encoder 360 outputs the result.

Subsequently, when the analog horizontal / vertical synchronization signal is input from the matrix 350, the RGB encoder 360 receives a predetermined signal output from the adder 330 and encodes the predetermined graphics signal. Output the attached OSD RGB video signal.

When the corresponding A_CVBS signal is input using the predetermined A_CVBS signal switched by the video switching unit 500 as a predetermined synchronization signal, the video chroma deflection processing unit 600 is output from the MPEG / Graph unit 300. A predetermined OSD RGB image signal is input and output to the CPT (not shown).

In addition, since only the RGB encoder 360 switches the input analog horizontal / vertical synchronization signals, the recording output proceeds without shaking the synchronization even when switching from digital to analog or analog to digital even when performing external recording.

That is, the video chroma deflection processing unit transmits the analog horizontal / vertical synchronization signal to the MPEG / Graphics unit and outputs the corresponding predetermined OSD RGB image signal suitable for the synchronization of the analog broadcasting. do.

Analog / digital OSD control apparatus for digital TV according to the present invention as described above has the following effects.

First, it provides digital quality high-quality OSD regardless of digital and analog broadcasting, so it can meet the user's visual needs and improve the reliability of the product.

Second, by outputting an OSD RGB video signal that matches the synchronization of the analog broadcast, the recording output is displayed unchanged regardless of mutual changes to analog and digital.

Claims (4)

A signal separator for separating video MPEG data from an input digital broadcast signal; Decode the video MPEG data separated by the signal separation unit and mix with the internal OS graphics data, and output the mixed RGB data signal according to the internal synchronization signal or the synchronization signal for analog broadcasting, according to the internal synchronization signal An MPEG / Graphics unit for outputting a CVBS signal; A tuning / VIF unit for tuning and detecting an analog broadcast signal and outputting an A_CVBS signal for synchronous detection; A video switching unit for selectively outputting one of a D_CVBS or A_CVBS signal and an external input signal generated by the tuning / VIF unit and the MPEG / graphic unit according to a user's broadcast selection; A video chroma deflection processor configured to process an OSD RGB image signal output from the MPEG / graphic unit in synchronization with a signal (D_CVBS, A_CVBS or an external input signal) output from the video switching unit and output the CSD signal to a CRT; And, The video chroma deflection processing unit controls the video switching unit to output the corresponding CVBS signal according to a user's broadcast selection, and processes the OSD RGB image signal output from the MPEG / Graphics unit according to the signal output from the video switching unit. Digital TV analog / digital OSD control device, characterized in that configured to include a microcomputer to control. The method of claim 1, The analog broadcast synchronization signal is And an analog synchronization signal generated by the video chroma deflection processing unit according to the control signal of the microcomputer. The method of claim 1, Digital TV analog / digital OSD control device further comprises a coded orthogonal frequency division multiplexing (COFDM) for outputting a predetermined digital broadcast signal received according to the user's digital broadcast selection as a predetermined transport stream . The method of claim 1, The MPEG / graphic unit A synchronization generator for generating a predetermined internal synchronization signal; A graphics generator for generating predetermined OS graphics data; An MPEG decoder which receives MPEG video data separated by the signal processor and performs MPEG decoding processing; An adder for mixing and processing video MPEG data decoded by the MPEG decoder and OSD graphic data generated by the graphic generator; A matrix for selectively outputting an internal synchronization signal generated by the synchronization generator or an analog synchronization signal generated by the video chroma deflection processor according to the control signal of the microcomputer; An RGB encoder for outputting an OSD RGB video signal by encoding a mixed signal of the adder according to the corresponding synchronization signal output from the matrix; And a CVBS encoder configured to process an OSD RGB image signal output from the RGB encoder according to the internal synchronization signal and output a CVBS signal.