KR100535356B1 - liquid crystal display device - Google Patents
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- KR100535356B1 KR100535356B1 KR10-1999-0011976A KR19990011976A KR100535356B1 KR 100535356 B1 KR100535356 B1 KR 100535356B1 KR 19990011976 A KR19990011976 A KR 19990011976A KR 100535356 B1 KR100535356 B1 KR 100535356B1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
- G09G3/3666—Control of matrices with row and column drivers using an active matrix with the matrix divided into sections
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0243—Details of the generation of driving signals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/08—Details of timing specific for flat panels, other than clock recovery
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- Crystallography & Structural Chemistry (AREA)
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- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
본 발명은 NTSC 영상정보와 문자정보를 화면에 수평으로 분할하여 표시함으로써, 문자정보 식별이 용이한 액정 표시 장치를 제공한다. 본 발명에 따른 액정 표시 장치는 외부로부터 입력되는 복합영상신호를 디코딩하여 아날로그 RGB 데이터 신호를 출력하는 디코더부와, 디코더부에서 출력되는 아날로그 RGB 데이터 신호를 스위칭하는 스위칭부와, 외부로부터 입력되는 화면분할모드신호에 따라 스위칭부를 온시킴과 동시에 데이터 마스킹신호를 발생하고 복합영상신호를 근거로 수평시작신호를 발생하는 타이밍 제어부와, 타이밍 제어부에서 발생된 데이터 마스킹신호에 따라 아날로그 RGB 데이터 신호와 외부로부터 입력되는 문자신호를 중첩하여 중첩 데이터 신호를 발생하는 데이터 중첩부와, 데이터 중첩부에서 입력되는 데이터 중첩신호와 타이밍 제어부에서 입력되는 수평시작신호를 근거로 TFT-LCD 패널의 화면을 수평으로 분할하여 문자정보와 영상신호를 표시하는 표시구동부를 포함한다.The present invention provides a liquid crystal display device in which character information is easily identified by displaying NTSC image information and character information horizontally on a screen. According to an exemplary embodiment of the present invention, a liquid crystal display device includes: a decoder unit for decoding an analog image signal input from the outside and outputting an analog RGB data signal, a switching unit for switching the analog RGB data signal output from the decoder unit, and a screen input from the outside A timing controller which turns on the switching unit according to the split mode signal and generates a data masking signal and a horizontal start signal based on the composite video signal, and an analog RGB data signal and an external signal according to the data masking signal generated by the timing controller The screen of the TFT-LCD panel is horizontally divided based on a data superimposition unit for superimposing input character signals to generate superimposition data signals, a data superimposition signal input at the data superimposition unit, and a horizontal start signal input at the timing controller. Display driver for displaying text information and video signal It includes.
Description
본 발명은 액정 표시 장치에 관한 것으로, 특히 NTSC 영상정보와 문자정보를 화면에 수평으로 분할하여 표시할 수 있는 액정 표시 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device that can display NTSC image information and character information horizontally on a screen.
일반적으로, 어스펙트비가 4 : 3인 박막 트랜지스터 액정 표시(Thin Film Transistor-Liquid Crystal Display; TFT-LCD) 장치에서 NTSC(National Television System Committee) 영상신호의 표시기간에 문자신호를 중첩하는 방법으로 NTSC 영상신호와 문자정보를 한 화면에 표시하였다.In general, in a thin film transistor liquid crystal display (TFT-LCD) device having an aspect ratio of 4: 3, NTSC is superimposed on a character signal in a display period of a National Television System Committee (NTSC) video signal. Video signal and text information are displayed on one screen.
그러나, 상기한 바와 같이 NTSC 영상신호와 문자신호를 중첩하여 표시하기 때문에 문자정보의 식별이 어려운 문제가 있었다. However, as described above, since NTSC video signals and text signals are superimposed and displayed, there is a problem that character information is difficult to identify.
따라서, 본 발명은 상기한 종래의 문제점을 해결하기 위한 것으로, NTSC 영상정보와 문자정보를 화면에 수평으로 분할하여 표시함으로써, 문자정보 식별이 용이한 액정 표시 장치를 제공함에 그 목적이 있다.Accordingly, an object of the present invention is to provide a liquid crystal display device which can easily identify character information by dividing the NTSC image information and character information horizontally on a screen.
상기 목적을 달성하기 위한 본 발명에 따른 액정 표시 장치는 외부로부터 입력되는 복합영상신호를 디코딩하여 아날로그 RGB 데이터 신호를 출력하는 디코더부와, 디코더부에서 출력되는 아날로그 RGB 데이터 신호를 스위칭하는 스위칭부와, 외부로부터 입력되는 화면분할모드신호에 따라 스위칭부를 온시킴과 동시에 데이터 마스킹신호를 발생하고 복합영상신호를 근거로 수평시작신호를 발생하는 타이밍 제어부와, 타이밍 제어부에서 발생된 데이터 마스킹신호에 따라 아날로그 RGB 데이터 신호와 외부로부터 입력되는 문자신호를 중첩하여 중첩 데이터 신호를 발생하는 데이터 중첩부와, 데이터 중첩부에서 입력되는 데이터 중첩신호와 타이밍 제어부에서 입력되는 수평시작신호를 근거로 TFT-LCD 패널의 화면을 수평으로 분할하여 문자정보와 영상신호를 표시하는 표시구동부를 포함한다.According to an aspect of the present invention, a liquid crystal display device includes: a decoder unit for decoding an analog image signal input from the outside and outputting an analog RGB data signal, a switching unit for switching the analog RGB data signal output from the decoder unit; A timing controller for turning on the switching unit according to the screen split mode signal input from the outside and generating a data masking signal and a horizontal start signal based on the composite video signal, and an analog signal according to the data masking signal generated by the timing controller On the basis of the TFT-LCD panel based on a data superimposition unit for generating an overlapping data signal by overlapping an RGB data signal with a character signal input from the outside, a data superimposition signal input from the data superimposition unit, and a horizontal start signal input from the timing controller. Split screen horizontally to display text information and video It includes a display driver for displaying a call.
이하, 첨부된 도면을 참조하여 본 발명의 실시예를 설명한다.Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention.
도 1은 본 발명의 실시예에 따른 액정 표시 장치를 나타낸 도면이다.1 is a diagram illustrating a liquid crystal display according to an exemplary embodiment of the present invention.
도 1을 참조하면, 본 발명에 따른 액정 표시 장치는 외부로부터 입력되는 복합영상신호(CVS)를 디코딩하여 아날로그 RGB 데이터 신호를 출력하는 디코더부(10)와, 이후 설명할 타이밍 제어부(30)에서 입력되는 데이터 마스킹 신호에 따라 디코더부(10)에서 출력되는 아날로그 RGB 데이터 신호를 스위칭하는 스위칭부(20)와, 사용자에 의해 외부로부터 화면분할모드신호(MS)가 입력되면 스위칭부(20)를 온시킴과 동시에 데이터 마스킹신호(DM)를 발생하고, 복합영상신호(CVS)를 근거로 수평시작신호(STH)를 발생하는 타이밍 제어부(30)와, 타이밍 제어부(30)에서 발생된 데이터 마스킹신호(DM)에 따라 아날로그 RGB 데이터 신호와 외부로부터 입력되는 문자신호(LS)의 디지털 RGB 데이터 신호를 중첩하고 감마 γ(gamma)를 보정하고 데이데이터를 반전하여 데이터 중첩신호를 발생하는 데이터 중첩부(40)와, 데이터 중첩부(40)에서 입력되는 데이터 중첩신호와 타이밍 제어부(30)에서 입력되는 수평시작신호(STH)를 근거로 TFT-LCD 패널(60)의 화면을 수평으로 분할하여 문자정보와 영상신호를 표시하는 표시 구동부(50)를 포함한다.Referring to FIG. 1, a liquid crystal display according to an exemplary embodiment of the present invention may include a decoder 10 that decodes a complex image signal CVS input from the outside and outputs an analog RGB data signal, and a timing controller 30 to be described later. The switching unit 20 for switching the analog RGB data signal output from the decoder unit 10 according to the input data masking signal, and the switching unit 20 when the screen split mode signal MS is input from the outside by the user. The data masking signal generated by the timing controller 30 and the timing controller 30 generating the data masking signal DM and generating a horizontal start signal STH based on the composite video signal CVS. According to (DM), the analog RGB data signal and the digital RGB data signal of the character signal LS inputted from the outside are superimposed, the gamma γ (gamma) is corrected, and the inversion of the data is used to correct the data superimposition signal. The screen of the TFT-LCD panel 60 is displayed on the basis of the generated data overlapping unit 40, the data overlapping signal input from the data overlapping unit 40, and the horizontal start signal STH input from the timing controller 30. And a display driver 50 for dividing horizontally to display text information and video signals.
여기서, 어스펙트비가 16 : 9(480 픽셀×234 라인)인 TFT-LCD 화면에 NTSC 영상을 4 : 3 의 어스펙트비로 표시하기 위해서는 아날로그 RGB 데이터 신호와 디지털 RGB 문자신호의 샘플링 주파수를 다르게 해야 한다.Here, in order to display an NTSC image with an aspect ratio of 4: 3 on a TFT-LCD screen having an aspect ratio of 16: 9 (480 pixels x 234 lines), the sampling frequency of the analog RGB data signal and the digital RGB character signal must be different. .
도 2a 내지 도 2c는 화면분할 표시모드에 따라 수평동기신호에 따른 타이밍 제어부에서 발생하는 수평시작신호(STH)와 데이터 마스킹신호(DM)를 나타낸 타이밍도이다. 2A to 2C are timing diagrams illustrating a horizontal start signal STH and a data masking signal DM generated by a timing controller according to a horizontal synchronization signal in a screen division display mode.
예컨대, 화면분할모드신호(MS)가 중앙모드, 즉 주화면은 중앙에 배치되고 문자정보가 좌우 양 측에 배치되는 경우에는, 480픽셀이 수평방향으로 60 : 360 : 60으로 분할되고, 타이밍 제어부(30)에서는 도 2a에 도시된 바와 같은 데이터 마스킹신호(MS) 및 수평시작신호(STH)를 발생한다. 또한, 화면분할모드신호(MS)가 우측모드, 즉 주화면은 우측에 배치되고 문자정보가 좌측에 배치되는 경우에는, 480픽셀이 수평방향으로 120 : 360으로 분할되고, 타이밍 제어부(30)에서는 도 2b에 도시된 바와 같은 데이터 마스킹신호(MS) 및 수평시작신호(STH)를 발생한다. 또한, 화면분할모드신호(MS)가 좌측모드, 즉 주화면은 좌측에 배치되고 문자정보가 우측에 배치되는 경우에는, 480픽셀이 수평방향으로 360 : 120으로 분할되고, 타이밍 제어부(30)에서는 도 2c에 도시된 바와 같은 데이터 마스킹신호(MS) 및 수평시작신호 (STH)를 발생한다. For example, when the screen split mode signal MS is in the center mode, i.e., the main screen is disposed at the center and the character information is disposed at both the left and right sides, 480 pixels are divided into 60: 360: 60 in the horizontal direction, and the timing controller At 30, a data masking signal MS and a horizontal start signal STH are generated as shown in FIG. 2A. In addition, when the screen split mode signal MS is in the right mode, that is, the main screen is arranged on the right side and the character information is arranged on the left side, 480 pixels are divided into 120: 360 in the horizontal direction, and the timing controller 30 A data masking signal MS and a horizontal start signal STH as shown in FIG. 2B are generated. In addition, when the screen split mode signal MS is in the left mode, that is, the main screen is arranged on the left side and the character information is arranged on the right side, 480 pixels are divided into 360: 120 in the horizontal direction, and the timing controller 30 A data masking signal MS and a horizontal start signal STH are generated as shown in FIG. 2C.
상기한 본 발명에 의하면, 어스펙트비가 16 : 9인 TFT-LCD 화면을 수평으로 분할하여 영상신호와 문자정보를 각각 표시함으로써, 영상신호뿐만 아니라 문자정보의 식별이 용이해진다. According to the present invention described above, by dividing the TFT-LCD screen having an aspect ratio of 16: 9 horizontally and displaying the video signal and the character information, respectively, identification of not only the video signal but also the character information becomes easy.
또한, 본 발명은 상기 실시예에 한정되지 않고, 본 발명의 기술적 요지를 벗어나지 않는 범위내에서 다양하게 변형시켜 실시할 수 있다. In addition, this invention is not limited to the said Example, It can variously deform and implement within the range which does not deviate from the technical summary of this invention.
도 1은 본 발명의 실시예에 따른 액정 표시 장치를 나타낸 도면이다.1 is a diagram illustrating a liquid crystal display according to an exemplary embodiment of the present invention.
도 2a 내지 도 2c는 화면분할 표시모드에 따라 수평동기신호에 따른 타이밍 제어부에서 발생하는 수평시작신호(STH)와 데이터 마스킹신호(DM)를 나타낸 타이밍도.2A to 2C are timing diagrams showing a horizontal start signal STH and a data masking signal DM generated by a timing controller according to a horizontal synchronization signal according to a screen division display mode.
〔도면의 주요 부분에 대한 부호의 설명〕[Description of Code for Major Parts of Drawing]
10 : 디코더부 20 : 스위칭부10 decoder unit 20 switching unit
30 : 타이밍 제어부 40 : 데이터 중첩부30: timing control unit 40: data overlapping unit
50 : 표시 구동부 60 : TFT-LCD 패널 50: display driver 60: TFT-LCD panel
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-1999-0011976A KR100535356B1 (en) | 1999-04-07 | 1999-04-07 | liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-1999-0011976A KR100535356B1 (en) | 1999-04-07 | 1999-04-07 | liquid crystal display device |
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| Publication Number | Publication Date |
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| KR20000065564A KR20000065564A (en) | 2000-11-15 |
| KR100535356B1 true KR100535356B1 (en) | 2005-12-09 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR900013788A (en) * | 1989-02-28 | 1990-09-06 | 아오이 죠이치 | Text broadcasting receiver and text information display method |
| KR970031949A (en) * | 1995-11-30 | 1997-06-26 | 이형도 | Split display of video and on-screen displays |
| JPH10322293A (en) * | 1997-05-15 | 1998-12-04 | Sony Corp | Teletext multiplex broadcast receiver |
| KR19990024908A (en) * | 1997-09-09 | 1999-04-06 | 윤종용 | 3-color driving liquid crystal display and driving method |
-
1999
- 1999-04-07 KR KR10-1999-0011976A patent/KR100535356B1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR900013788A (en) * | 1989-02-28 | 1990-09-06 | 아오이 죠이치 | Text broadcasting receiver and text information display method |
| KR970031949A (en) * | 1995-11-30 | 1997-06-26 | 이형도 | Split display of video and on-screen displays |
| JPH10322293A (en) * | 1997-05-15 | 1998-12-04 | Sony Corp | Teletext multiplex broadcast receiver |
| KR19990024908A (en) * | 1997-09-09 | 1999-04-06 | 윤종용 | 3-color driving liquid crystal display and driving method |
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| KR20000065564A (en) | 2000-11-15 |
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