KR200189977Y1 - Apparatus for controlling picture quality - Google Patents
Apparatus for controlling picture quality Download PDFInfo
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- KR200189977Y1 KR200189977Y1 KR2019970017632U KR19970017632U KR200189977Y1 KR 200189977 Y1 KR200189977 Y1 KR 200189977Y1 KR 2019970017632 U KR2019970017632 U KR 2019970017632U KR 19970017632 U KR19970017632 U KR 19970017632U KR 200189977 Y1 KR200189977 Y1 KR 200189977Y1
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- magnitude
- luminance
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- 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
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
본 고안은 화질조정장치에 관한 것으로, 휘도신호(또는 CVBS신호)와 색신호의 관계값을 기저장하고 있으며, 현재 입력되는 휘도신호의 크기를 분석하고, 분석된 휘도신호의 크기에 대응되는 색신호의 크기를 구하여 그 크기만큼 조정함으로써 색잠김, 색신호 노이즈 등을 방지하고, 색재현성 등을 최적으로 유지할 수 있는 효과를 제공한다.The present invention relates to an image quality adjusting device, which pre-stores a relationship between a luminance signal (or CVBS signal) and a color signal, analyzes the magnitude of a luminance signal currently input, and analyzes the magnitude of the color signal corresponding to the magnitude of the analyzed luminance signal. By obtaining the size and adjusting it by the size, it is possible to prevent color lockout, color signal noise, etc., and to maintain the color reproducibility optimally.
Description
본 고안은 TV의 화질조정장치에 관한 것으로, 특히 수신되는 RF신호의 이득을 고려하여 색상, 밝기 등과 같은 화질을 조정할 수 있는 화질조정장치에 관한 것이다.The present invention relates to an image quality adjusting device of a TV, and more particularly, to an image quality adjusting device capable of adjusting image quality such as color, brightness, etc. in consideration of gain of a received RF signal.
종래의 TV에서는 튜너를 통해 수신되는 방송신호를 기설정된 일정표준안에 따라 설정된 화질로 디스플레이부에 출력하였다. 그러므로, 사용자는 원하는 화질조정을 하기 위해 기설정된 일정표준안에 따라 콘트라스트(contrast), 밝기(bright), 색상(color), 색조(hue 또는 tint) 등의 값을 수동으로 선택하여 화질을 조정하였다.In a conventional TV, a broadcast signal received through a tuner is output to a display unit with a set image quality according to a predetermined standard. Therefore, the user manually adjusts the image quality by manually selecting values such as contrast, brightness, color, hue or tint according to a predetermined standard to adjust desired image quality.
종래의 TV에서는 수동으로 기설정된 일정표준안에 따라 화질을 조정하므로 안테나를 통해 수신되는 RF신호의 이득을 고려하지 않아서 정확한 색상조정을 할 수가 없었다.In the conventional TV, since the image quality is manually adjusted according to a predetermined standard, it is not possible to accurately adjust the color without considering the gain of the RF signal received through the antenna.
따라서, 본 고안의 목적은 수신되는 방송신호중 휘도신호(또는 CVBS신호)의 크기를 판단하고, 분석결과에 따라 기저장된 관계값에 대응하는 관계가 되도록 색신호(UV신호 또는 RGB신호)를 조정하는 화질조정장치를 제공함에 있다.Accordingly, an object of the present invention is to determine the magnitude of a luminance signal (or CVBS signal) among received broadcast signals, and to adjust the color signal (UV signal or RGB signal) so as to correspond to a previously stored relationship value according to an analysis result. In providing an adjusting device.
도 1은 본 발명의 화질조정장치를 나타낸 구성도.1 is a block diagram showing an image quality adjusting device of the present invention.
※도면의 주요 부분에 대한 부호의 설명※ Explanation of code for main part of drawing
11 : 튜너부 12 : IF부11: Tuner part 12: IF part
13 : 스위치부 14 : 비데오신호처리부13 switch unit 14 video signal processing unit
15 : 제어부 16 : 디스플레이부15: control unit 16: display unit
위와같은 목적을 달성하기 위한 본 고안의 특징은 화질조정장치에 있어서, 입력되는 영상신호를 휘도신호와 색신호로 분리하고, 인가되는 색신호조정신호에 따라 색신호의 크기를 조정한 후 영상신호의 디스플레이를 위한 신호처리를 수행하는 비데오신호처리부 및 휘도신호와 색신호간의 관계값을 기저장하고 있으며, 현재 입력되는 휘도신호의 크기를 분석하고, 분석된 휘도신호의 크기에 대응되는 색신호의 크기를 상기 관계값에 의한 관계를 만족하도록 조정하는 색신호조정신호를 상기 비데오신호처리부로 출력하는 제어부를 포함하는 화질조정장치에 있다.A feature of the present invention for achieving the above object is that in the image quality adjustment device, the input video signal is separated into a luminance signal and a color signal, and after adjusting the magnitude of the color signal according to the applied color signal adjustment signal, And a video signal processor for performing signal processing for storing the relation value between the luminance signal and the color signal. The magnitude of the color signal corresponding to the magnitude of the analyzed luminance signal is analyzed. And a control unit for outputting a color signal adjustment signal to be adjusted so as to satisfy the relationship by the video signal processing unit.
이하 첨부한 도면을 참조하여 본 고안의 바람직한 일 실시예를 상세히 설명하겠다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 고안의 화질조정장치를 나타낸 구성도이다. 본 고안의 장치는 방송신호를 수신하는 튜너부(11)와, 수신된 RF(Radio Frequency)신호를 중간주파수(Intermediate Frequency)로 증폭하는 중간주파수증폭부(IF부)(12)를 구비한다. IF부(12)의 후단에는 스위치부(13)가 연결된다. 스위치부(13)는 제어부(15)의 제어하에 IF부(12)로부터 입력되는 방송신호와 외부로부터 입력되는 비데오신호중 하나를 선택한다. 스위치부(13)를 통해 선택된 신호는 비데오신호처리부(14)로 출력된다. 제어부(15)는 비데오신호처리부(14)로부터 휘도신호(또는 CVBS신호)를 입력받아 휘도신호의 크기를 판단하고, 판단결과에 따라 색신호의 크기가 기저장된 관계값에 의한 관계가 되도록 조정레벨을 설정하는 색신호조정신호를 출력한다. 비데오신호처리부(14)는 제어부(15)로부터의 색신호조정신호에 따라 입력받은 색신호의 크기를 조정하여 디스플레이부(16)로 출력한다.1 is a block diagram showing an image quality adjusting device of the present invention. The apparatus of the present invention includes a tuner unit 11 for receiving a broadcast signal, and an intermediate frequency amplifier unit (IF unit) 12 for amplifying a received radio frequency (RF) signal at an intermediate frequency. The switch part 13 is connected to the rear end of the IF part 12. The switch unit 13 selects one of a broadcast signal input from the IF unit 12 and a video signal input from the outside under the control of the control unit 15. The signal selected by the switch unit 13 is output to the video signal processing unit 14. The controller 15 receives the luminance signal (or CVBS signal) from the video signal processor 14 to determine the magnitude of the luminance signal, and according to the determination result, adjusts the adjustment level so that the magnitude of the color signal is related to the previously stored relation value. Outputs the color signal adjustment signal to be set. The video signal processor 14 adjusts the magnitude of the color signal received according to the color signal adjustment signal from the controller 15 and outputs the color signal to the display unit 16.
위와같은 구성을 가지는 본 고안의 장치의 동작을 좀더 자세히 설명하겠다.The operation of the device of the present invention having the above configuration will be described in more detail.
도 1에서, 튜너부(11)는 안테나를 통해 RF신호를 수신받는다. IF부(12)는 수신된 RF신호를 IF신호로 변환한다. IF부(12)는 휘도신호(또는 CVBS신호)를 스위치부(13)로 출력한다. 스위치부(13)는 제어부(15)의 스위치선택신호에 따라 외부로부터 입력되는 비데오신호 또는 IF부(12)에서 증폭된 방송신호중 하나를 선택하여 출력한다. 비데오신호처리부(14)는 스위치부(13)로부터 입력된 신호를 휘도신호(또는 CVBS신호)와 색신호(또는 UV 또는 RGB신호)로 분리한다. 이때, 비데오신호처리부(14)는 수평주기별로 신호처리한다. 제어부(15)는 분리된 휘도신호의 크기를 판단하고, 판단결과에 따라 관계값을 만족하도록 색신호의 크기를 조정하라는 색신호조정신호를 출력한다. 예를들어, 제어부(15)에 휘도신호(또는 CVBS신호)의 크기가 1일 때, 색신호(또는 UV, RGB신호)의 크기는 0.3이라는 관계값이 설정되어 있는 경우를 설명하겠다. 실시예에서, 비데오신호처리부(14)는 스위치부(13)로부터 입력된 신호를 1수평주기별로 처리하여 분리된 휘도신호(또는 CVBS신호)가 0.9라면 색신호는 0.27이어야 한다. 그러므로, 제어부(15)는 비데오신호처리부(14)로 색신호의 크기를 0.27이 되도록 현재 색신호의 크기를 감소시키라는 색신호조정신호를 출력한다. 비데오신호처리부(14)는 제어부(15)로부터 상기 신호를 입력받아 색신호의 크기를 관계값을 만족하도록 조정한 후, 영상신호를 디스플레이할 수 있게 신호처리하여 디스플레이부(16)에 출력하게 된다.In FIG. 1, the tuner unit 11 receives an RF signal through an antenna. The IF unit 12 converts the received RF signal into an IF signal. The IF unit 12 outputs the luminance signal (or CVBS signal) to the switch unit 13. The switch unit 13 selects and outputs one of a video signal input from the outside or a broadcast signal amplified by the IF unit 12 according to the switch selection signal of the controller 15. The video signal processor 14 separates the signal input from the switch unit 13 into a luminance signal (or CVBS signal) and a color signal (or UV or RGB signal). At this time, the video signal processor 14 processes the signal for each horizontal period. The control unit 15 determines the magnitude of the separated luminance signal and outputs a color signal adjustment signal for adjusting the magnitude of the color signal to satisfy the relationship value according to the determination result. For example, the case where the magnitude | size of the color signal (or UV, RGB signal) is 0.3 is set when the magnitude | size of the luminance signal (or CVBS signal) is 1 in the control part 15. In the exemplary embodiment, the video signal processor 14 processes the signal input from the switch unit 13 by one horizontal period, and if the separated luminance signal (or CVBS signal) is 0.9, the color signal should be 0.27. Therefore, the control unit 15 outputs the color signal adjustment signal to the video signal processing unit 14 to reduce the size of the current color signal so that the size of the color signal is 0.27. The video signal processor 14 receives the signal from the controller 15 and adjusts the magnitude of the color signal to satisfy the relationship value, and then processes the signal to display the video signal and outputs the image signal to the display unit 16.
상술한 바와같이, 본 고안은 수신되는 RF신호의 이득에 따라 제어부에서 휘도신호(또는 CVBS신호)의 크기를 분석하여 기설정된 기준값에 따라 색신호의 크기를 조정함으로써 색잠김, 노이즈 등을 방지할 수 있고, 색재현성 등을 최적의 상태로 유지할 수 있는 효과가 있다.As described above, the present invention analyzes the magnitude of the luminance signal (or CVBS signal) in the control unit according to the gain of the received RF signal and adjusts the magnitude of the color signal according to a predetermined reference value to prevent color lockout and noise. It is effective in maintaining color reproduction and the like in an optimal state.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019970017632U KR200189977Y1 (en) | 1997-07-03 | 1997-07-03 | Apparatus for controlling picture quality |
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| KR2019970017632U KR200189977Y1 (en) | 1997-07-03 | 1997-07-03 | Apparatus for controlling picture quality |
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| Publication Number | Publication Date |
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| KR19990004480U KR19990004480U (en) | 1999-02-05 |
| KR200189977Y1 true KR200189977Y1 (en) | 2000-08-01 |
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