KR100280184B1 - Caption processing device and method - Google Patents
Caption processing device and method Download PDFInfo
- Publication number
- KR100280184B1 KR100280184B1 KR1019980057049A KR19980057049A KR100280184B1 KR 100280184 B1 KR100280184 B1 KR 100280184B1 KR 1019980057049 A KR1019980057049 A KR 1019980057049A KR 19980057049 A KR19980057049 A KR 19980057049A KR 100280184 B1 KR100280184 B1 KR 100280184B1
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- luminance
- color difference
- caption
- image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
- H04N5/44504—Circuit details of the additional information generator, e.g. details of the character or graphics signal generator, overlay mixing circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
- H04N9/78—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Graphics (AREA)
- Television Systems (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
본 발명은 RF신호와 복합영상신호(CVBS) 및 휘도/색차 신호(Y/C signal)를 입력받아 화상처리하여 출력하는 텔레비전에서 휘도/색차 신호 입력시 캡션 모드에 따라 입력되는 휘도/색차 신호의 처리를 캡션 처리 또는 영상처리로 선택적으로 수행하게 하여 휘도/색차 신호에 대해 화질의 영향 없이 캡션 처리를 가능하게 하는 캡션 처리 장치 및 방법에 관한 것으로, 휘도/색차 신호(Y/C signal)를 입력받아 복합영상신호로 변환하는 복합영상신호변환부; 상기 복합영상신호로부터 캡션신호를 디코딩하여 그에 대응하는 R,G,B 및 블랭킹신호를 생성하는 캡션디코더; 상기 복합영상신호로부터 휘도/색차 신호를 분리하는 휘도/색차신호분리부; 상기 휘도/색차 신호를 입력받아 R,G,B 및 블랭킹신호를 생성하는 영상처리부; 상기 캡션디코더에 의해 생성된 R,G,B 및 블랭킹신호와 상기 영상처리부에 의해 생성된 R,G,B 및 블랭킹신호를 디스플레이장치에 출력하기 위해 믹싱하는 믹서; 상기 텔레비전모드가 캡션 모드가 아닌 경우 상기 휘도/색차신호를 복합영상신호로 변환시키지 않고 상기 영상처리부에 의해 영상처리하여 상기 디스플레이장치에 출력하게 하는 마이크로프로세서를 포함한다.According to the present invention, a luminance / color difference signal input according to a caption mode when a luminance / color difference signal is input to a television that receives an RF signal, a composite video signal (CVBS), and a luminance / color difference signal (Y / C signal) is output and processed. A caption processing apparatus and method for selectively performing a caption processing or an image processing to enable caption processing without affecting image quality on a luminance / color difference signal, and inputting a luminance / color difference signal (Y / C signal). A composite video signal conversion unit for receiving and converting into a composite video signal; A caption decoder for decoding a caption signal from the composite video signal and generating R, G, B, and blanking signals corresponding thereto; A luminance / color difference signal separator for separating the luminance / color difference signal from the composite video signal; An image processor which receives the luminance / color difference signal and generates R, G, B, and blanking signals; A mixer for mixing the R, G, B and blanking signals generated by the caption decoder with the R, G, B and blanking signals generated by the image processor to be output to a display device; And a microprocessor configured to process the image by the image processor and output the image to the display apparatus without converting the luminance / color difference signal into a composite image signal when the television mode is not the caption mode.
Description
본 발명은 캡션 처리 장치 및 방법에 관한 것으로, 더욱 상세하게는 RF신호와 복합영상신호(CVBS) 및 휘도/색차 신호(Y/C signal)를 입력받아 화상처리하여 출력하는 텔레비전에서 휘도/색차 신호 입력시 캡션 모드에 따라 입력되는 휘도/색차 신호의 처리를 캡션 처리 또는 영상처리로 선택적으로 수행하게 하여 휘도/색차 신호에 대해 화질의 영향 없이 캡션 처리를 가능하게 하는 캡션 처리 장치 및 방법에 관한 것이다.The present invention relates to a caption processing apparatus and method, and more particularly, to a luminance / color difference signal in a television which receives an RF signal, a composite image signal (CVBS), and a luminance / color difference signal (Y / C signal), and outputs the processed image. The present invention relates to a caption processing apparatus and method for enabling caption processing without affecting image quality on a luminance / color difference signal by selectively performing the processing of the luminance / color difference signal input according to a caption mode at the time of input. .
일반적으로 텔레비전의 경우 디지털 비디오 디스크 플레이어(Digital Video Disk Player:DVDP) 또는 VCR과 같은 외부신호입력장치와 연결하기 위해 스카트 잭(SCART JACK)을 외부입력신호 입력단자로 사용하고 있다. 스카트 잭을 통해 외부신호입력장치에 연결된 텔레비전은 방송신호인 RF신호와 외부신호입력장치로부터 입력되는 복합영상신호(CVBS) 및 휘도/색차 신호를 입력받아 비디오신호처리부에 의해 신호를 처리하여 모니터로 출력한다.In general, a television jack is used as an external input signal input terminal to connect an external signal input device such as a digital video disk player (DVDP) or a VCR. The TV connected to the external signal input device through the scart jack receives the RF signal which is a broadcast signal, the composite video signal (CVBS) input from the external signal input device, and the luminance / color difference signal, and processes the signal by the video signal processing unit to monitor. Output
한편, 최근 들어 텔레비전은 캡션(caption)기능이 지원하고 있다. 캡션 기능이란 텔레비전 화면에 글자가 표시되어 영상을 보충 설명하는 기능을 의미하며, 영상화면의 내용을 축약하여 나타내어 청각장애자들에게 서비스할 수도 있고, 외국어를 번역하여 표시하면 어학학습용으로도 이용할 수 있는 기능이다.On the other hand, television has recently been supported by a caption (caption) function. The caption function is a function that supplements the video by displaying letters on the television screen. The caption function may be shortened to display the contents of the video screen to serve the hearing impaired, or may be used for language learning by translating and displaying a foreign language. Function.
일반적으로 캡션은 오픈 캡션(open-caption)과 클로우즈 캡션(close- caption)이 있다. 오픈 캡션은 영상화면과 함께 항상 삽입되어 있는 자막으로 시청자가 자막을 온/오프할 수가 없으며, 클로우즈 캡션은 캡션데이터를 영상신호의 21H 구간에 삽입하여 전송하는 것으로, 시청자는 캡션 기능을 갖는 디코더를 임의로 온/오프할 수 있다.Generally, captions are open-caption and close-caption. Open captions are subtitles that are always inserted with the video screen, and viewers cannot turn on / off the captions. Close captions insert caption data into the 21H section of the video signal and transmit the caption data. Can be turned on / off arbitrarily.
일반적인 캡션(caption)기능 텔레비전 수상기를 도 1을 참조하여 살펴보면, 안테나(1)를 통해 공중파 방송신호를 수신한 후, 튜너(2)를 통해 수신되는 방송신호 가운데 시청채널을 선국하고, 출력되는 중간주파수(IF)신호를 IF증폭부(3)를 통해 증폭하여 출력하며, P/S분리부(4)는 IF증폭부(3)에서 증폭된 중간주파수신호로부터 영상중간주파수(PIF)신호 및 음성중간주파수(SIF)신호를 각각 분리하여 출력한다.Referring to FIG. 1, a typical caption-capable television receiver receives an over-the-air broadcast signal through an antenna 1, and then tunes a viewing channel among broadcast signals received through the tuner 2, and outputs an intermediate channel. The frequency (IF) signal is amplified and output through the IF amplifier 3, and the P / S separation unit 4 is a video intermediate frequency (PIF) signal and voice from the intermediate frequency signal amplified by the IF amplifier (3). Outputs the intermediate frequency (SIF) signal separately.
또한, 음성검파부(5)는 P/S분리부(4)에서 분리 출력되는 음성중간주파수(SIF)신호로부터 음성신호를 검파하고, 음성처리부(6)는 음성검파부(5)로부터 출력되는 음성신호에 대해 이후에 설명할 마이크로 프로세서(16)의 제어신호에 따라 베이스(Bass), 트레블(Treble), 볼륨(Volume)등의 음성처리를 실행하고, 음성증폭부(7)는 음성처리부(6)에서 처리된 음성신호를 증폭하여 후단에 접속된 스피커(8)를 통해 출력한다.In addition, the voice detector 5 detects a voice signal from a voice intermediate frequency (SIF) signal output from the P / S separation unit 4, and the voice processor 6 is output from the voice detector 5 The voice signal is subjected to voice processing such as bass, treble, and volume according to the control signal of the microprocessor 16 which will be described later. The audio signal processed in 6) is amplified and output through the speaker 8 connected to the rear stage.
한편, 영상검파부(9)는 P/S분리부(4)로부터 출력되는 영상중간주파수(PIF)신호로부터 영상신호를 검파하고, 영상처리부(10)는 영상검파부(9)로부터 출력되는 영상신호에 대해 마이크로 프로세서(16)의 제어신호에 따라 칼라(color), 색조(tint), 휘도(brightness)등을 처리하여 복합영상신호에 대응하는 R(Red), G(Green), B(Blue) 신호 및 블랭킹신호를 출력한다.Meanwhile, the image detector 9 detects an image signal from an image intermediate frequency (PIF) signal output from the P / S separation unit 4, and the image processor 10 outputs an image output from the image detector 9. Color (R), G (Green), B (Blue) corresponding to the composite video signal by processing color, tint, brightness, etc. according to the control signal of the microprocessor 16 with respect to the signal ) And the blanking signal are output.
또한, 리모콘장치(14)는 캡션(caption)기능 선택을 위한 소정 기능키가 구비되고, 수신부(15)는 리모콘장치(14)로부터 송출되는 적외선신호를 수신하여 이를 전기적인 코드신호로 변환출력하며, 마이크로 프로세서(16)는 수신부(15)로부터 출력되는 코드신호를 근거로 장치전반을 제어한다.In addition, the remote control device 14 is provided with a predetermined function key for caption function selection, the receiving unit 15 receives the infrared signal transmitted from the remote control device 14 and converts it into an electrical code signal and outputs The microprocessor 16 controls the entire apparatus based on the code signal output from the receiver 15.
한편, 캡션디코더(20)는 마이크로 프로세서(16)로부터 출력되는 제어신호에 따라 방송신호의 21H 수평주사구간에 실려 송출되어오는 캡션데이터신호를 검출하고, 이 검출된 데이터신호를 처리하여 캡션을 위한 R,G,B 및 블랭킹신호(C')를 출력하고, 믹서(mixer :11)는 영상처리부(10)로부터 출력되는 R,G,B 및 블랭킹신호와 캡션디코더(20)에서 출력되는 R,G,B 및 블랭킹신호(C')를 믹싱하여 출력하며, CRT구동부(11)는 출력되는 신호를 근거로 후단에 접속된 CRT(13)를 구동하여 영상을 출력한다On the other hand, the caption decoder 20 detects the caption data signal carried on the 21H horizontal scan section of the broadcast signal according to the control signal output from the microprocessor 16, and processes the detected data signal to perform captions. R, G, B and the blanking signal (C ') is output, and the mixer (mixer: 11) outputs the R, G, B and blanking signal output from the image processing unit 10 and the R, output from the caption decoder 20, The G, B and blanking signals C 'are mixed and output, and the CRT driver 11 drives the CRT 13 connected to the rear stage based on the output signal to output an image.
상기한 구성으로 된 종래의 캡션(caption)기능 텔레비전 수상기는 사용자가 리모콘장치를 통해 캡션모드를 선택함에 따라 마이크로 프로세서(16)가 캡션디코더(20)를 제어함으로써 방송신호로부터 캡션데이터신호를 추출 및 처리하도록 되어 있는 바, 시청자는 화면상으로 출력되는 자막을 볼 수 있게 되어 있다.In the conventional caption function television receiver having the above-described configuration, the microprocessor 16 controls the caption decoder 20 to extract the caption data signal from the broadcast signal as the user selects the caption mode through the remote control device. The viewer is allowed to view the subtitles output on the screen.
텔레비전은 RF 방송신호를 입력받아 출력할 뿐만 아니라 전술한 바와 같이 스카트 잭을 통해 외부신호입력장치로부터 복합영상신호(CVBS) 또는 휘도/색차 신호를 입력받아 출력할 수 있는데, 외부신호입력장치로부터 입력되는 휘도/색차 신호에도 캡션정보를 포함하여 출력할 수 있으며, 캡션신호는 휘도신호(Y signal)에 삽입된다.In addition to receiving and outputting an RF broadcast signal, the television can receive and output a composite video signal (CVBS) or a luminance / color difference signal from an external signal input device through a skat jack as described above. Caption information may be included in the luminance / color difference signal to be output, and the caption signal is inserted into the luminance signal (Y signal).
그러나, 종래의 텔레비전은 휘도신호(Y signal)에 포함된 캡션신호를 효과적으로 처리하지 못하여, 주파수 특성에 열화로 인하여 선명한 화질을 구현하기 위한 휘도/색차 신호를 사용하는 본래의 목적을 달성할 수 없다는 문제점이 발생한다.However, conventional televisions cannot effectively process the caption signal included in the luminance signal (Y signal), and thus cannot achieve the original purpose of using the luminance / color difference signal for realizing a clear image quality due to deterioration in frequency characteristics. A problem occurs.
따라서, 본 발명의 목적은 전술한 종래의 문제점을 극복하기 위해 안출된 것으로서 휘도/색차 신호를 입력받아 휘도신호(Y signal)에 포함된 캡션신호를 캡션 모드 유무에 따라 선택적으로 처리하여 고화질의 출력을 가능하게 하는데 그 목적이 있다.Accordingly, an object of the present invention is to solve the above-mentioned problems in the prior art, and receives a luminance / color difference signal and selectively processes a caption signal included in a luminance signal (Y signal) according to the presence or absence of a caption mode to output a high quality image. The purpose is to make it possible.
도 1은 일반적인 캡션(caption) 기능 텔레비전 수상기의 내부구성을 나타낸 블록구성도이고,1 is a block diagram showing the internal configuration of a general caption-capable television receiver;
도 2는 본 발명에 따른 캡션 처리장치의 내부구성을 나타낸 블록구성도이고,Figure 2 is a block diagram showing the internal configuration of the caption processing apparatus according to the present invention,
도 3은 본 발명에 따른 캡션 처리 방법을 나타낸 흐름도이다.3 is a flowchart illustrating a caption processing method according to the present invention.
<도면의 주요부분의 부호의 설명><Description of Symbols of Major Parts of Drawings>
210 : 영상신호선택부 220 : 복합영상신호입력부210: video signal selection unit 220: composite video signal input unit
230 : 휘도/색차신호입력부 240 : 복합영상신호변환부230: luminance / color difference signal input unit 240: composite video signal conversion unit
250 : 마이크로 프로세서 260 : 영상처리부250: microprocessor 260: image processor
270 : 캡션디코더 280 : 믹서270: caption decoder 280: mixer
290 : 디스플레이구동부 300 : 휘도/색차신호분리부290: display driver 300: luminance / chrominance signal separation unit
상기 목적을 달성하기 위한 본 발명의 일 측면에 의하면, RF 방송신호를 입력받아 영상검파하여 생성된 복합영상신호 또는 외부신호입력장치로부터 복합영상신호(CVBS)나 휘도/색차 신호(Y/C signal)를 입력받아 영상처리하여 출력하는 텔레비전에 있어서, 상기 휘도/색차 신호(Y/C signal)를 입력받아 복합영상신호로 변환하는 복합영상신호변환부; 상기 복합영상신호로부터 캡션신호를 디코딩하여 그에 대응하는 R,G,B 및 블랭킹신호를 생성하는 캡션디코더; 상기 복합영상신호로부터 휘도/색차 신호를 분리하는 휘도/색차신호분리부; 상기 휘도/색차 신호를 입력받아 R,G,B 및 블랭킹신호를 생성하는 영상처리부; 상기 캡션디코더에 의해 생성된 R,G,B 및 블랭킹신호와 상기 영상처리부에 의해 생성된 R,G,B 및 블랭킹신호를 디스플레이장치(이를테면, 음극선관)에 출력하기 위해 믹싱하는 믹서; 상기 텔레비전모드가 캡션 모드가 아닌 경우 상기 휘도/색차신호를 복합영상신호로 변환시키지 않고 상기 영상처리부에 의해 영상처리하여 상기 디스플레이장치에 출력하게 하는 마이크로프로세서를 포함하는 캡션 처리 장치가 개시된다.According to an aspect of the present invention for achieving the above object, a composite video signal (CVBS) or a luminance / color difference signal (Y / C signal from a composite video signal or an external signal input device generated by receiving an RF broadcast signal and image detection; 1. A television receiving and outputting a video signal, the television comprising: a composite video signal converter for receiving the luminance / color difference signal (Y / C signal) and converting it into a composite video signal; A caption decoder for decoding a caption signal from the composite video signal and generating R, G, B, and blanking signals corresponding thereto; A luminance / color difference signal separator for separating the luminance / color difference signal from the composite video signal; An image processor which receives the luminance / color difference signal and generates R, G, B, and blanking signals; A mixer for mixing the R, G, B and blanking signals generated by the caption decoder and the R, G, B and blanking signals generated by the image processor to be output to a display device (eg, a cathode ray tube); Disclosed is a caption processing apparatus including a microprocessor for image processing by the image processing unit and outputting to the display apparatus without converting the luminance / color difference signal into a composite image signal when the television mode is not the caption mode.
바람직하게, 상기 마이크로 프로세서는 RF 방송신호를 영상검파하여 생성된 제 1 복합영상신호와 상기 외부신호입력장치로부터 입력된 제 2 복합영상신호, 그리고 상기 복합영상신호변환부에 의해 변환된 제 3 복합영상신호를 선택적으로 상기 휘도/색차신호분리부 및 상기 캡션디코더에 입력하는 영상신호선택부를 포함한다.Preferably, the microprocessor may perform a first composite video signal generated by detecting an RF broadcast signal, a second composite video signal input from the external signal input device, and a third composite video signal converted by the composite video signal converter. And an image signal selection unit for selectively inputting an image signal to the luminance / color difference signal separating unit and the caption decoder.
본 발명의 다른 측면에 의하면, RF 방송신호를 입력받아 영상검파하여 생성된 복합영상신호 또는 외부신호입력장치로부터 복합영상신호(CVBS)나 휘도/색차 신호(Y/C signal)를 입력받아 영상처리하여 출력하는 텔레비전에 적용되는 캡션 처리 방법에 있어서, 상기 휘도/색차 신호(Y/C signal)를 입력받고, 상기 텔레비전이 캡션 모드인 경우 상기 휘도/색차신호를 복합영상신호로 변환하고, 상기 복합영상신호로부터 캡션신호를 디코딩하여 그에 대응하는 R,G,B 및 블랭킹신호를 생성한 후, 상기 복합영상신호로부터 휘도/색차신호를 분리하여 R,G,B 및 블랭킹신호를 생성하고, 생성된 R,G,B 및 블랭킹신호와 상기 캡션디코더로부터 생성된 R,G,B 및 블랭킹신호를 믹싱하여 디스플레이장치에 표시할 R,G,B신호를 생성하여 출력하며, 상기 텔레비전이 캡션 모드가 아닌 경우 상기 입력된 휘도/색차신호를 복합영상신호로 변환시키지 않고 R,G,B 및 블랭킹신호로 변환 생성한 후, 생성된 R,G,B 및 블랭킹신호에 따라 영상을 디스플레이장치에 출력하는 캡션 처리 방법이 개시된다.According to another aspect of the present invention, a composite video signal generated by receiving an RF broadcast signal and detecting an image or a composite video signal (CVBS) or a luminance / color difference signal (Y / C signal) from an external signal input device is processed. A caption processing method applied to a television to be outputted, the method comprising: receiving the luminance / color difference signal (Y / C signal), converting the luminance / color difference signal into a composite video signal when the television is in caption mode, and Decode the caption signal from the video signal to generate the corresponding R, G, B and blanking signals, and then separate the luminance / color difference signal from the composite video signal to generate the R, G, B and blanking signals. R, G, B and blanking signals are mixed with the R, G, B and blanking signals generated from the caption decoder to generate and output R, G and B signals to be displayed on a display device, and the television is not in caption mode.A caption for converting the input luminance / color difference signal into a R, G, B and blanking signal without converting the input luminance / color difference signal into a composite video signal, and then outputting the image to the display apparatus according to the generated R, G, B and blanking signals A treatment method is disclosed.
이하, 상기한 본 발명의 목적들, 특징들, 그리고 장점들을 첨부된 도면에 나타낸 본 발명의 바람직한 실시예를 통해 보다 상세히 설명한다.Hereinafter, the objects, features, and advantages of the present invention described above will be described in more detail with reference to the preferred embodiments of the present invention shown in the accompanying drawings.
후술되는 용어들은 본 발명에서의 기능을 고려하여 정의 내려진 용어들로서 이는 당 분야에 종사하는 기술자의 의도 또는 관례 등에 따라 달라질 수 있으므로, 그 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.The terms to be described below are terms defined in consideration of functions in the present invention, and may vary according to the intention or custom of a person skilled in the art, and the definitions should be made based on the contents throughout the specification.
본 발명에 따른 캡션 처리장치를 영상처리부분을 중심으로 도 2를 참조하여 살펴보면 다음과 같다.The caption processing apparatus according to the present invention will be described with reference to FIG. 2 with reference to the image processing part.
영상신호선택부(210)는 도 1에 도시된 바와 같이 안테나(1)를 통해 RF 방송신호를 입력받아 튜너(2), IF증폭부(3), P/S분리부(4), 영상검파부(9)를 통해 생성된 복합영상신호와 외부신호입력장치(이를테면, VCR)로부터 복합영상신호입력부(220)를 통해 복합영상신호(CVBS)를 각각 입력받는다.As shown in FIG. 1, the image signal selector 210 receives an RF broadcast signal through an antenna 1, and includes a tuner 2, an IF amplifier 3, a P / S separator 4, and an image detector. The composite video signal generated through the unit 9 and the external image input device (for example, VCR) are received through the composite video signal input unit 220 through the composite video signal CVBS, respectively.
복합영상신호변환부(240)는 외부신호입력장치로부터 휘도/색차신호입력부(230)를 통해 휘도/색차 신호(Y/C signal)를 입력받아 복합영상신호로 변환하여 영상신호선택부(210)에 입력한다.The composite video signal conversion unit 240 receives a luminance / color difference signal (Y / C signal) from the external signal input device through the luminance / color difference signal input unit 230 and converts it into a composite video signal to convert the image signal selection unit 210. Type in
한편, 마이크로 프로세서(250)는 시청자로부터 입력되는 영상 선택신호에 따라 영상신호선택부(210)를 제어하여 입력 근원이 서로 다른 복합영상신호들 중 하나의 복합영상신호를 선택하여 캡션디코더(270)에 전달하고, 휘도/색차신호분리부(300)를 통해 선택된 복합영상신호로부터 휘도/색차신호(Y/C signal)로 분리하여 영상처리부(260)에 전달한다.Meanwhile, the microprocessor 250 controls the image signal selector 210 according to the image selection signal input from the viewer to select one composite image signal among the composite image signals having different input sources, thereby caption decoder 270. And the luminance / color difference signal (Y / C signal) is separated from the selected composite image signal through the luminance / color difference signal separation unit 300 and transmitted to the image processing unit 260.
영상처리부(260)는 복합영상신호로부터 분리된 휘도/색차신호에 대한 R(Red), G(Green),B(Blue) 신호와 블랭킹신호를 출력한다The image processor 260 outputs R (Red), G (Green), and B (Blue) signals and blanking signals for luminance / color difference signals separated from the composite image signal.
한편, 캡션디코더(270)는 마이크로 프로세서(250)의 제어신호에 따라 복합영상신호에 포함된 캡션신호를 디코딩하여 그에 대응하는 R,G,B 및 블랭킹신호를 생성한다.Meanwhile, the caption decoder 270 decodes the caption signal included in the composite video signal according to the control signal of the microprocessor 250 to generate R, G, B, and blanking signals corresponding thereto.
마이크로 프로세서(250)는 캡션 모드 유무에 따라 휘도/색차신호입력부(230)를 제어하여 외부신호입력장치(이를테면, VCR)로부터 입력되는 휘도/색차신호를 복합영상신호변환부(240) 또는 영상처리부(260)에 입력한다.The microprocessor 250 controls the luminance / color difference signal input unit 230 according to the presence or absence of a caption mode to convert the luminance / color difference signal input from an external signal input device (eg, VCR) into the composite image signal converter 240 or the image processor. Enter at 260.
믹서(280)는 영상처리부(260)로부터 출력되는 R,G,B 및 블랭킹신호와 캡션디코더(270)에서 출력되는 R,G,B 및 블랭킹신호를 믹싱하여 출력하며, 디스플레이구동부(290)는 출력되는 신호를 근거로 디스플레이장치에 출력한다.The mixer 280 mixes the R, G, B, and blanking signals output from the image processor 260 and the R, G, B, and blanking signals output from the caption decoder 270, and outputs the mixed display. Output to the display device based on the output signal.
한편, 마이크로프로세서(250)는 텔레비전모드가 캡션 모드가 아닌 경우 휘도/색차신호입력부(230)를 제어하며 외부신호입력장치로부터 입력되는 휘도/색차신호를 복합영상신호로 변환시키지 않고 영상처리부(260)에 의해 영상처리하여 출력하여 화질 열화를 방지한다.Meanwhile, when the television mode is not the caption mode, the microprocessor 250 controls the luminance / color difference signal input unit 230 and the image processor 260 without converting the luminance / color difference signal input from the external signal input device into a composite image signal. ) To prevent image degradation by outputting image processing.
본 발명에서는 방송신호인 RF신호와 외부신호입력장치로부터 입력되는 복합영상신호(CVBS)에 포함된 캡션 데이터를 처리하는 과정은 일반적인 기술이므로 설명을 생략하고, 본 발명의 요지인 휘도/색차신호(Y/C signal)에 포함된 캡션 데이터를 처리하는 캡션 처리 방법을 도 2와 도3을 참조하여 살펴보면 다음과 같다.In the present invention, the process of processing the caption data included in the RF signal, which is a broadcast signal, and the composite video signal (CVBS) input from an external signal input device, is a general technique, and thus description thereof will be omitted and the luminance / color difference signal ( A caption processing method for processing caption data included in a Y / C signal) will be described with reference to FIGS. 2 and 3.
먼저, 마이크로 프로세서(250)는 휘도/색차신호입력부(230)를 통해 휘도/색차 신호(Y/C signal)를 입력받고, 텔레비전이 캡션 모드인 경우 입력된 휘도/색차신호를 복합영상신호변환부(240)를 통해 복합영상신호로 변환한다(단계 : S310 내지 S330).First, the microprocessor 250 receives a luminance / color difference signal (Y / C signal) through the luminance / color difference signal input unit 230, and converts the input luminance / color difference signal into a composite image signal conversion unit when the television is in caption mode. The image signal is converted into a composite video signal through 240 (step: S310 to S330).
입력된 휘도/색차 신호를 복합영상신호로 변환한 후, 복합영상신호로부터 캡션신호를 디코딩하여 그에 대응하는 R,G,B 및 블랭킹신호를 생성한다(단계 : S340).After converting the input luminance / color difference signal into a composite video signal, the caption signal is decoded from the composite video signal to generate R, G, B and blanking signals corresponding thereto (step S340).
캡션신호를 디코딩하여 그에 대응하는 R,G,B 및 블랭킹신호를 생성한 후, 복합영상신호로부터 휘도/색차신호를 분리하여 R,G,B 신호와 블랭킹신호를 생성하고, 생성된 R,G,B 및 블랭킹신호와 캡션디코더(270)로부터 인가되는 R,G,B 및 블랭킹신호를 믹싱하여 디스플레이장치상에 영상화면 및 캡션을 표시하기 위한 R,G,B신호를 생성한다(단계 : S350).After decoding the caption signal to generate the corresponding R, G, B and blanking signals, separate the luminance / color difference signal from the composite video signal to generate the R, G, B signals and the blanking signal, and generate the generated R, G and B signals. , B and blanking signals and R, G, B and blanking signals applied from the caption decoder 270 are mixed to generate R, G and B signals for displaying an image screen and a caption on the display device (step: S350). ).
한편, 단계 S310에서 텔레비전이 캡션모드가 아닌 경우 마이크로프로세서(250)의 제어에 따라 휘도/색차신호입력부(230)를 통해 휘도/색차 신호(Y/C signal)를 입력받은 후, 입력된 휘도/색차신호를 복합영상신호로 변환시키지 않고 영상처리하여 R,G,B 신호를 생성한다(단계 : S360).Meanwhile, when the television is not in the caption mode in step S310, the luminance / color difference signal (Y / C signal) is received through the luminance / color difference signal input unit 230 under the control of the microprocessor 250, and then the input luminance / R, G, B signals are generated by image processing without converting the color difference signal into a composite video signal (step S360).
즉, 휘도/색차 신호를 복합영상신호로 변환시키면 주파수 특성에 열화로 인하여 화질이 나빠지므로, 캡션 모드인 경우에만 휘도/색차신호를 복합영상신호로 변환시키고, 일반 모드인 경우에는 휘도/색차신호에 대해 영상처리한다.That is, converting a luminance / color difference signal into a composite video signal deteriorates the image quality due to deterioration in frequency characteristics. Therefore, the luminance / color difference signal is converted into a composite video signal only in caption mode. Image processing for.
단계 S350과 단계 S360을 거쳐 처리된 영상을 디스플레이장치에 출력한다(단계 : S370).The image processed through steps S350 and S360 is output to the display apparatus (step S370).
이상에서 살펴본 바와 같이, 본 발명에 따르면 RF신호와 복합영상신호(CVBS) 및 휘도/색차 신호(Y/C signal)를 입력받아 화상처리하여 출력하는 텔레비전에서 휘도/색차 신호 입력시 캡션 모드에 따라 입력되는 휘도/색차 신호의 처리를 캡션 처리 또는 영상처리로 선택적으로 수행하게 하여 휘도/색차 신호에 대해 화질의 영향 없이 캡션 처리를 가능하게 하는 효과가 있다.As described above, according to the present invention, according to a caption mode when a luminance / color difference signal is input in a television that receives an RF signal, a composite video signal (CVBS), and a luminance / color difference signal (Y / C signal), and outputs the image by processing them. The processing of the input luminance / color difference signal is selectively performed by caption processing or image processing, thereby enabling caption processing without affecting image quality on the luminance / color difference signal.
이상 본 발명의 바람직한 실시예에 대해 상세히 기술되었지만, 본 발명이 속하는 기술 분야에 있어서 통상의 지식을 가진 사람이라면, 첨부된 청구 범위에 정의된 본 발명의 정신 및 범위를 벗어나지 않으면서 본 발명을 여러 가지로 변형 또는 변경하여 실시할 수 있음을 알 수 있을 것이다. 따라서 본 발명의 앞으로의 실시예들의 변경은 본 발명의 기술을 벗어날 수 없을 것이다.Although the preferred embodiments of the present invention have been described in detail above, those skilled in the art will appreciate that the present invention may be modified without departing from the spirit and scope of the invention as defined in the appended claims. It will be appreciated that modifications or variations may be made. Therefore, changes in the future embodiments of the present invention will not be able to escape the technology of the present invention.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980057049A KR100280184B1 (en) | 1998-12-22 | 1998-12-22 | Caption processing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980057049A KR100280184B1 (en) | 1998-12-22 | 1998-12-22 | Caption processing device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20000041222A KR20000041222A (en) | 2000-07-15 |
| KR100280184B1 true KR100280184B1 (en) | 2001-02-01 |
Family
ID=19564459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019980057049A Expired - Fee Related KR100280184B1 (en) | 1998-12-22 | 1998-12-22 | Caption processing device and method |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100280184B1 (en) |
-
1998
- 1998-12-22 KR KR1019980057049A patent/KR100280184B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR20000041222A (en) | 2000-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6204884B1 (en) | Multisystem television which is usable as a monitor of a personal computer and a method thereof | |
| US6563546B2 (en) | High definition display unit and high definition display method | |
| KR100280184B1 (en) | Caption processing device and method | |
| KR100391070B1 (en) | On-screen display device in digital television set: | |
| JP2001313911A (en) | Television transmitter and television receiver | |
| KR200161540Y1 (en) | Television monitor with caption function | |
| KR100252717B1 (en) | Television with the ability to convert local languages into standard languages | |
| JP2008099091A (en) | Image processing method and television receiver | |
| KR100281780B1 (en) | Display control method and apparatus thereof for television receiver having double teletext mode | |
| KR0181803B1 (en) | Television receiver with automatic OSD output direction adjustment | |
| KR100242113B1 (en) | Korean character deleting device of tv set | |
| KR20000021578A (en) | Method for controlling caption display on tv | |
| KR19980030873A (en) | Television receiver with caption caption resize | |
| KR100722449B1 (en) | Image processing method of television | |
| JPH07307898A (en) | Video signal reproducing device | |
| KR940004603Y1 (en) | Circuitry mosaic tv screen | |
| KR20000003826A (en) | Apparatus of treating background screen for television responding to abnormal receiving of broadcasting signal | |
| KR100277951B1 (en) | Analog / Digital TV | |
| KR20060008785A (en) | How to automatically set audio mode of TV using broadcasting station signal information | |
| KR20000020400A (en) | Method for automatically controlling contrast of television receiver | |
| KR19990035522A (en) | Television receiver with caption caption auto cumulative display | |
| KR980013324A (en) | 2 Tuner When viewing broadcast received from the TV to the first tuner, | |
| KR20000034298A (en) | Channel Tuning Device and Method Using Vertical Retrace Period of Television | |
| KR19990043041A (en) | Television receiver with guide character position control | |
| KR19990035521A (en) | Television receiver with caption caption display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19981222 |
|
| PA0201 | Request for examination |
Patent event code: PA02012R01D Patent event date: 19981222 Comment text: Request for Examination of Application |
|
| PG1501 | Laying open of application | ||
| E701 | Decision to grant or registration of patent right | ||
| PE0701 | Decision of registration |
Patent event code: PE07011S01D Comment text: Decision to Grant Registration Patent event date: 20001026 |
|
| GRNT | Written decision to grant | ||
| PR0701 | Registration of establishment |
Comment text: Registration of Establishment Patent event date: 20001108 Patent event code: PR07011E01D |
|
| PR1002 | Payment of registration fee |
Payment date: 20001109 End annual number: 3 Start annual number: 1 |
|
| PG1601 | Publication of registration | ||
| PR1001 | Payment of annual fee |
Payment date: 20031030 Start annual number: 4 End annual number: 4 |
|
| PR1001 | Payment of annual fee |
Payment date: 20041029 Start annual number: 5 End annual number: 5 |
|
| PR1001 | Payment of annual fee |
Payment date: 20051028 Start annual number: 6 End annual number: 6 |
|
| PR1001 | Payment of annual fee |
Payment date: 20061030 Start annual number: 7 End annual number: 7 |
|
| PR1001 | Payment of annual fee |
Payment date: 20071030 Start annual number: 8 End annual number: 8 |
|
| PR1001 | Payment of annual fee |
Payment date: 20081031 Start annual number: 9 End annual number: 9 |
|
| PR1001 | Payment of annual fee |
Payment date: 20091029 Start annual number: 10 End annual number: 10 |
|
| PR1001 | Payment of annual fee |
Payment date: 20101028 Start annual number: 11 End annual number: 11 |
|
| FPAY | Annual fee payment |
Payment date: 20111028 Year of fee payment: 12 |
|
| PR1001 | Payment of annual fee |
Payment date: 20111028 Start annual number: 12 End annual number: 12 |
|
| FPAY | Annual fee payment |
Payment date: 20121030 Year of fee payment: 13 |
|
| PR1001 | Payment of annual fee |
Payment date: 20121030 Start annual number: 13 End annual number: 13 |
|
| LAPS | Lapse due to unpaid annual fee | ||
| PC1903 | Unpaid annual fee |