KR100650785B1 - Method for displaying signal strength in digital television - Google Patents

Method for displaying signal strength in digital television Download PDF

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KR100650785B1
KR100650785B1 KR1020040095175A KR20040095175A KR100650785B1 KR 100650785 B1 KR100650785 B1 KR 100650785B1 KR 1020040095175 A KR1020040095175 A KR 1020040095175A KR 20040095175 A KR20040095175 A KR 20040095175A KR 100650785 B1 KR100650785 B1 KR 100650785B1
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South Korea
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value
snr
quility
ser
signal strength
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KR1020040095175A
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Korean (ko)
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KR20060055968A (en
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김용광
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주식회사 대우일렉트로닉스
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H04N17/004—Diagnosis, testing or measuring for television systems or their details for digital television systems

Abstract

본 발명은 디지털 텔레비전에서의 신호세기 표현 방법에 관한 것으로, 특히 디지털 텔레비전의 신호세기를 표시함에 있어서 신호와 노이즈의 비로만 나타내던 것을 실제 들어오는 신호의 깨짐 정도를 신호세기에 반영하여 표시함으로써 신호세기를 정확하게 표현할 수 있도록 한 디지털 텔레비전에서의 신호세기 표현 방법에 관한 것이다. 위와 같은 본 발명은 신호세기 표시 명령이 입력되면 영상신호에서 신호대 잡음비 SNR 값과 세그먼트 에러율 SER 값을 측정하는 단계와; 상기 측정된 SNR 값과 SER 값을 통해 신호세기를 나타내는 SNRquility과 SERquility 값을 연산하는 단계와; 상기에서 연산한 SNRquility과 SERquility 값의 크기를 비교하는 단계와; 상기 비교결과, SNRquility 값이 SERquility 값 보다 크면 SERquility 값을 신호세기로 채택하고, SERquility 값이 SNRquility 값 보다 크면 SNRquility 값을 신호세기로 채택하여 메뉴에 표시하는 단계;로 이루어진다.The present invention relates to a method of expressing signal strength in a digital television. In particular, the signal strength is represented by reflecting the degree of breakage of an actual incoming signal into a signal strength, which is represented only by a ratio of signal and noise in displaying the signal strength of a digital television. The present invention relates to a method of expressing signal strength in a digital television that can accurately express. The present invention as described above comprises the steps of measuring the signal-to-noise ratio SNR value and segment error rate SER value in the video signal when the signal strength display command is input; Calculating SNR quility and SER quility values representing signal strength through the measured SNR and SER values; Comparing the magnitudes of the SNR quility and SER quility values calculated above; The result of the comparison, SNR by quility value is adopted SER quility value is greater than the SER quility value to the signal strength and employing the SNR quility value greater SER quility value than the SNR quility value to the signal strength displaying a menu; consists of.

신호세기, 신호대잡음비, 세그먼트 에러율, 영상신호, 텔레비전Signal strength, signal to noise ratio, segment error rate, video signal, television

Description

디지털 텔레비전에서의 신호세기 표현 방법{METHOD FOR DISPLAYING SIGNAL STRENGTH IN DIGITAL TELEVISION} Signal strength expression method in digital television {METHOD FOR DISPLAYING SIGNAL STRENGTH IN DIGITAL TELEVISION}             

도 1 은 본 발명에 의한 디지털 텔레비전에서의 신호세기 표현 방법을 설명하기 위한 흐름도.1 is a flowchart for explaining a signal strength representation method in a digital television according to the present invention;

도 2 는 신호왜곡으로 인한 신호파형과 왜곡이 거의 없는 신호파형을 도시한 도면.2 is a diagram illustrating a signal waveform due to signal distortion and a signal waveform with little distortion.

본 발명은 디지털 텔레비전에서의 신호세기 표현 방법에 관한 것으로, 보다 상세하게는 디지털 텔레비전의 신호세기를 표시함에 있어서 신호와 노이즈의 비로만 나타내던 것을 실제 들어오는 신호의 깨짐 정도를 신호세기에 반영하여 표시함으로써 신호세기를 정확하게 표현할 수 있도록 한 디지털 텔레비전에서의 신호세기 표현 방법에 관한 것이다.The present invention relates to a method of expressing signal strength in a digital television, and more particularly, to display the signal strength of a digital television by reflecting the degree of breakage of an actual incoming signal in the signal strength. The present invention relates to a method of expressing signal strength in a digital television that can accurately express signal strength.

일반적으로 디지털 방송은 아날로그 방송과 달리 어느 정도의 신호가 가정에 들어오지 않으면 화면에 어떠한 노이즈도 없이 블랙화면이 나타난다. 이런 경우 들어오는 신호가 어떠한지 판단하기가 어렵다. In general, unlike an analog broadcast, a black screen appears without any noise on the screen unless a certain amount of signal enters the home. In this case, it is difficult to determine what the incoming signal is.

이에 메뉴항목에 신호세기를 두어서 현재 들어오는 신호의 상태를 파악하게 된다. 현재 시중에 나와 있는 일체형 디지털 텔레비전이나 셋탑박스를 보면 디지털 방송을 시청 중일 때는 메뉴에서 신호세기를 확인 할 수 있다.In this way, the signal strength is placed on the menu item to determine the status of the current incoming signal. If you watch an all-in-one digital television or set-top box on the market, you can check the signal strength in the menu when you are watching digital broadcasting.

어떤 제품에서는 강, 중, 약으로 표시를 하고 있고 또 다른 제품에서는 0 ~ 100 까지의 숫자로 표시를 하고 있다.Some products are marked strong, medium and weak, while others are marked with numbers from 0 to 100.

그런데 지금 까지는 신호의 세기를 나타낼 때 SNR(Signal Noise Ratio)을 가지고서만 신호세기를 표현하였다. 이 SNR은 신호대노이즈의 비로서 신호의 양적인 면만을 나타내고 있다.However, until now, the signal strength has been expressed only with the signal noise ratio (SNR). This SNR represents only the quantitative aspect of the signal as the ratio of signal to noise.

그러나 실제 들어오는 신호의 상당수는 반사파라든지 기타 등등의 왜곡 성분들이 신호에 유입이 된다. 이 왜곡이 많이 나타나면 아무리 SNR이 좋다고 하여도 디지털 방송을 수신하지 못하므로 SNR 만으로는 정확한 신호세기가 표현되지 못한다.However, much of the incoming signal actually introduces distortions such as reflected waves and so on. If this distortion appears a lot, no matter how good the SNR, digital broadcasting is not received, so the SNR alone does not express the exact signal strength.

즉, 기존에는 신호세기 표현을 단지 신호대노이즈의 비로만 나타낸 것으로 실제 들어오는 신호에 왜곡이 발생했을 때에는 이를 신호세기에 반영하지 못하여 정확한 신호세기의 표현이 이루어지지 못한 문제점이 있다.That is, conventionally, the signal strength is represented only by the ratio of signal-to-noise. When distortion occurs in an actual incoming signal, there is a problem in that the signal strength cannot be accurately represented because it is not reflected in the signal strength.

본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위해 창안된 것으로, 디지털 텔레비전의 신호세기를 표시함에 있어서 신호와 노이즈의 비로만 나타내던 것을 실제 들어오는 신호의 깨짐 정도를 신호세기에 반영하여 표시함으로써 신호세기를 정확하게 표현할 수 있도록 한 디지털 텔레비전에서의 신호세기 표현 방법을 제공하는데 그 목적이 있다.
The present invention was devised to solve the above problems of the prior art, and by displaying the signal strength of the digital television reflecting the degree of breakage of the actual incoming signal, which is represented only by the ratio of signal and noise in displaying the signal strength of the digital television, The purpose of the present invention is to provide a method of expressing signal strength in a digital television that can accurately express signal strength.

상기와 같은 목적을 달성하기 위한 본 발명은 신호세기 표시 명령이 입력되면 영상신호에서 신호대 잡음비 SNR 값과 세그먼트 에러율 SER 값을 측정하는 단계와; 상기 측정된 SNR 값과 SER 값을 사용자가 인지할 수 있는 신호세기로 표시하기 위한 SNRquility과 SERquility 값으로 연산하는 단계와; 상기에서 연산한 신호세기 SNRquility과 SERquility 값의 크기를 비교하는 단계와; 상기 신호세기 SNRquility과 SERquility 값의 비교결과, SNRquility 값이 SERquility 값 보다 크면 SERquility 값을 신호세기로 채택하고, SERquility 값이 SNRquility 값 보다 크면 SNRquility 값을 신호세기로 채택하여 표시하는 단계를 포함하여 이루어진 것을 특징으로 한다.The present invention for achieving the above object comprises the steps of measuring the signal-to-noise ratio SNR value and segment error rate SER value in the video signal when the signal strength display command is input; Calculating the measured SNR value and the SER value with an SNR quility and an SER quility value for displaying a signal strength recognizable by a user; Comparing the magnitudes of the signal strengths SNR quility and SER quility values calculated above; By adopting a result of the comparison, SNR quility value is adopted SER quility value is greater than the SER quility value to the signal strength, and SER quility value is greater than the SNR quility value SNR quility value of the signal strength SNR quility and SER quility value to the signal strength Characterized in that it comprises a step of displaying.

삭제delete

본 발명에서, 상기 신호세기를 나타내는 SNRquility 와 SERquility 값의 연산은, In the present invention, the calculation of the SNR quility and SER quility value representing the signal strength,

SNRquility = ((SNRMAX - SNRMIN)*100) / (SNRValue - SNRMIN ), SNR quility = ((SNR MAX -SNR MIN ) * 100) / (SNR Value -SNR MIN ),

SERquility = 100 - ((100*SERValue) / 25)SER quility = 100-((100 * SER Value ) / 25)

의 연산식을 통해 연산함을 특징으로 한다.It is characterized by calculating through the expression of.

여기서, 상기 SNRquility과 SERquility은 사용자가 인지할 수 있도록 연산된 신호세기이며, SNRMAX은 SNR의 최대값 SNRMIN은 SNR의 최소값이고, SNRValue 은 측정된 SNR 값 SERValue 은 측정된 SER 값이다. Here, the SNR quility and SER quility is a signal strength calculated to be recognized by the user, SNR MAX is the maximum value of the SNR SNR MIN is the minimum value of the SNR, SNR Value is the measured SNR value SER Value is the measured SER value to be.

또한, 상기 신호세기의 표현은 측정된 SNR과 SER 값을 통해 연산된 SERquility 값과 SNRquility 값을 메뉴를 통해 사용자가 인지할 수 있도록 수치로 표시하거나 또는 그래픽 화하여 표시함을 특징으로 한다.In addition, the expression of the signal strength is characterized in that the SER quility value and the SNR quility value calculated through the measured SNR and SER values are displayed numerically or graphically so that the user can recognize them through a menu.

위와 같이, 본 발명은 디지털 텔레비전의 신호세기를 표시함에 있어서 신호와 노이즈의 비로만 나타내던 것을 실제 들어오는 신호의 깨짐 정도를 신호세기에 반영하여 표시함으로써 신호세기를 정확하게 표현할 수 있는 것이다.As described above, the present invention can accurately represent the signal strength by displaying the signal strength reflecting the degree of breakage of the actual incoming signal, which is represented only by the ratio of the signal and noise in displaying the signal strength of the digital television.

이하, 본 발명의 바람직한 실시예를 첨부한 도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

도 1 은 본 발명에 의한 디지털 텔레비전에서의 신호세기 표현 방법을 설명하기 위한 흐름도이고, 도 2 는 신호왜곡으로 인한 신호파형과 왜곡이 거의 없는 신호파형을 도시한 도면이다.1 is a flowchart illustrating a method of expressing signal strength in a digital television according to the present invention, and FIG. 2 is a diagram illustrating a signal waveform due to signal distortion and a signal waveform with little distortion.

도 1 에 도시한 바와 같이, 본 발명은 디지털 텔레비전에서 신호세기 표시 명령이 입력되면 들어오는 영상신호의 상태를 체크하기 위해 신호대 잡음비 SNR(Signal noise ratio) 값과 세그먼트 에러율 SER(Segment error ratio) 값을 측정한다. As shown in FIG. 1, when the signal strength display command is input in a digital television, the present invention uses a signal-to-noise ratio signal noise ratio (SNR) value and a segment error ratio (SER) value to check a state of an incoming video signal. Measure

그리고, 상기 측정된 SNR 값과 SER 값을 통해 신호세기를 표현하기 위해 0 ~ 100 사이의 값으로 계산된 SNRquility과 SERquility 값을 연산한다. In addition, the SNR quility and SER quility values calculated as values between 0 and 100 are calculated to express signal strength through the measured SNR and SER values.

상기 SNRquility 와 SERquility 값의 연산은, SNRquility = ((SNRMAX - SNRMIN)*100) / (SNRValue - SNRMIN), SERquility = 100 - ((100*SERValue) / 25) 의 연산식을 통해 이루어진다.The calculation of the SNR quility and SER quility value is SNR quility = ((SNR MAX -SNR MIN ) * 100) / (SNR Value -SNR MIN ), SER quility = 100-((100 * SER Value ) / 25) This is accomplished through a formula.

여기서, 상기 SNRMAX은 SNR의 최대값이고 SNRMIN은 SNR의 최소값이며, 상기 SNRValue 과 SERValue 은 각각 측정에 의한 SNR 과 SER 의 측정값이다.Here, the SNR MAX is the maximum value of the SNR, SNR MIN is the minimum value of the SNR, and the SNR Value and SER Value are the measured values of the SNR and the SER by measurement, respectively.

이어서, 상기 연산한 SNRquility과 SERquility 값의 크기를 비교한다.Then, the magnitudes of the calculated SNR quility and SER quility values are compared.

이때, SNRquility 값이 SERquility 값 보다 크면 SERquility 값을 신호세기로 채택하고, SERquility 값이 SNRquility 값 보다 크면 SNRquility 값을 신호세기로 채택한다.In this case, the SNR value quility adopts quility SNR value greater than the adopted value is greater than the SER SER quility quility value to the signal strength and, SER quility value quility SNR value to the signal strength.

이처럼, 디지털 방송신호의 신호대 잡음비가 좋다고 하여도 신호 속에 포함된 반사파라든지 기타 등등의 왜곡 성분들이 포함되어 있으면 아무리 신호대 잡음비가 좋다고 하여도 디지털 방송을 수신하지 못하므로 세그먼트 에러율을 신호세기에 반영하여 표현하는 것이다.As such, even if the signal-to-noise ratio of the digital broadcasting signal is good, if the reflected wave or other distortion components are included in the signal, no matter how good the signal-to-noise ratio is, the digital broadcasting is not received. It is.

그리고, 상기 신호세기의 표현은 측정된 SNR과 SER 값을 통해 연산된 SERquility 값과 SNRquility 값을 메뉴를 통해 사용자가 인지할 수 있도록 계산된 값을 0~100 수치로 표시하거나 이를 그래픽 화하여 표시한다.In addition, the expression of the signal strength is displayed so that the user can recognize the SER quility value and the SNR quility value calculated through the measured SNR and SER values through a menu with a value of 0 to 100 or graphically Display.

위와 같은 본 발명을 예를들어 설명하면, SNRMAX은 30, SNRMIN은 10 이고, 측정된 SNRValue 값이 20이고, SERValue 값이 20 일때,Referring to the present invention as an example, when the SNR MAX is 30, the SNR MIN is 10, the measured SNR Value is 20, and the SER Value is 20,

신호세기를 표현하기 위해 계산된 값Calculated value to express signal strength

SNRquility = ((30 - 10)*100)/(20-10) = 50 이고,SNR quility = (( 30-10 ) * 100) / (20-10) = 50,

SERquility = 100 - ((100*20)/25) = 20 이다.SER quility = 100-((100 * 20) / 25) = 20

여기서, 상기 SNRquility 값이 SERquility 보다 크므로, 상기 SER_quality 를 신호세기로 채택하여 표시한다.Here, since the SNR quility value is larger than the SER quility , the SER_quality is adopted as the signal strength and displayed.

위 예에서와 같이 비록 SNRquility 값이 50 이지만 신호 왜곡 등으로 실질적으로 화면이 깨지게 된다. 이와 같은 경우는 SERquility 를 사용하여 화면에 20 이라는 작은 숫자를 표시하는 것이다.Although the SNR quility value is 50, as shown in the example above, the screen is substantially broken due to signal distortion. In this case, SER quility is used to display a small number 20 on the screen.

도 2 에 도시한 바와 같이, 그림 (a)와 (b)는 신호의 SNR 값은 비슷하지만 (a)가 (b) 보다 신호의 왜곡이 많이 일어남을 알 수 있다. As shown in Figure 2, Figures (a) and (b) are similar to the SNR value of the signal, but it can be seen that (a) is more distortion of the signal than (b).

이처럼, 메뉴에 표현되는 신호세기의 값은 SNR 값만으로는 정확히 표현할 수 없으므로 SER 값을 신호세기에 반영해야 한다.As such, the signal strength value expressed in the menu cannot be accurately expressed by the SNR value alone, and thus the SER value should be reflected in the signal strength.

즉, 신호대 잡음비가 좋다고 하여도 신호 속에 포함된 반사파라든지 기타 등등의 왜곡 성분들이 포함되어 있으면 아무리 신호대 잡음비가 좋다고 하여도 디지 털 방송을 수신하지 못하므로 세그먼트 에러율을 신호세기에 반영하여 표현함으로써 신호세기를 보다 더 정확하게 표현할 수 있도록 한다.That is, even if the signal-to-noise ratio is good, if the reflected wave or other distortion components are included in the signal, no matter how good the signal-to-noise ratio is, the digital broadcast is not received. To make the expression more accurate.

상술한 바와 같이, 본 발명은 디지털 텔레비전의 신호세기를 표시함에 있어서 신호와 노이즈의 비로만 나타내던 것을 실제 들어오는 신호의 왜곡된 부분도 신호세기에 반영하여 표시함으로써 신호세기를 보다 더 정확하게 표현할 수 있는 이점이 있다.As described above, the present invention can express the signal strength more accurately by displaying the signal intensity of the incoming signal reflected on the signal strength, which is represented only by the ratio of signal and noise in displaying the signal strength of the digital television. There is an advantage.

Claims (4)

신호세기 표시 명령이 입력되면 영상신호에서 신호대 잡음비 SNR 값과 세그먼트 에러율 SER 값을 측정하는 단계와;Measuring a signal-to-noise ratio SNR value and a segment error rate SER value in an image signal when a signal strength display command is input; 상기 측정된 SNR 값과 SER 값을 사용자가 인지할 수 있는 신호세기로 표시하기 위한 SNRquility과 SERquility 값으로 연산하는 단계와; Calculating the measured SNR value and the SER value with an SNR quility and an SER quility value for displaying a signal strength recognizable by a user; 상기에서 연산한 신호세기 SNRquility과 SERquility 값의 크기를 비교하는 단계와;Comparing the magnitudes of the signal strengths SNR quility and SER quility values calculated above; 상기 신호세기 SNRquility과 SERquility 값의 비교결과, SNRquility 값이 SERquility 값 보다 크면 SERquility 값을 신호세기로 채택하고, SERquility 값이 SNRquility 값 보다 크면 SNRquility 값을 신호세기로 채택하여 표시하는 단계;By adopting a result of the comparison, SNR quility value is adopted SER quility value is greater than the SER quility value to the signal strength, and SER quility value is greater than the SNR quility value SNR quility value of the signal strength SNR quility and SER quility value to the signal strength Displaying; 를 포함하여 이루어진 것을 특징으로 하는 디지털 텔레비전에서의 신호세기 표현 방법.Signal strength expression method in a digital television comprising a. 삭제delete 제 1 항에 있어서,The method of claim 1, 상기 신호세기를 나타내는 SNRquility 와 SERquility 값의 연산은 Calculation of the SNR quility and SER quility value representing the signal strength SNRquility = ((SNRMAX - SNRMIN)*100) / (SNRValue - SNRMIN), SNR quility = ((SNR MAX -SNR MIN ) * 100) / (SNR Value -SNR MIN ), SERquility = 100 - ((100*SERValue) / 25)SER quility = 100-((100 * SER Value ) / 25) 의 연산식을 통해 연산함을 특징으로 하는 디지털 텔레비전에서의 신호세기 표현 방법.A method of expressing signal strength in a digital television, characterized in that the operation is performed through the equation. (여기서, 상기 SNRquility과 SERquility은 사용자가 인지할 수 있도록 연산된 신호세기이며, SNRMAX은 SNR의 최대값 SNRMIN은 SNR의 최소값이고, SNRValue 은 측정된 SNR 값 SERValue 은 측정된 SER 값이다.) Here, the SNR quility and SER quility is the signal strength calculated to be recognized by the user, SNR MAX is the maximum value of SNR SNR MIN is the minimum value of SNR, SNR Value is the measured SNR value SER Value is the measured SER Value.) 제 1 항에 있어서,The method of claim 1, 상기 신호세기의 표현은 측정된 SNR과 SER 값을 통해 연산된 SERquility 값과 SNRquility 값을 메뉴를 통해 사용자가 인지할 수 있도록 수치로 표시하거나 또는 그래픽화하여 표시함을 특징으로 하는 디지털 텔레비전에서의 신호세기 표현 방법.The expression of the signal strength is a digital television, characterized in that the numerical display or graphic display of the SER quility value and SNR quility value calculated through the measured SNR and SER value through a menu so that the user can recognize How to express signal strength
KR1020040095175A 2004-11-19 2004-11-19 Method for displaying signal strength in digital television KR100650785B1 (en)

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