KR970068614A - Automatic input switching device of satellite digital radio broadcasting - Google Patents
Automatic input switching device of satellite digital radio broadcasting Download PDFInfo
- Publication number
- KR970068614A KR970068614A KR1019960007316A KR19960007316A KR970068614A KR 970068614 A KR970068614 A KR 970068614A KR 1019960007316 A KR1019960007316 A KR 1019960007316A KR 19960007316 A KR19960007316 A KR 19960007316A KR 970068614 A KR970068614 A KR 970068614A
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- South Korea
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- signal
- video signal
- video
- digital radio
- satellite digital
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Abstract
본 발명은 위성 디지탈 라디오방송의 자동입력 절환장친에 관한 것으로, 종래의 서브캐리어 어버브 비디오 모드(Subcarrier above video mode)에서 밴드패스필터 없이 아날로그(A)/디지탈(D) 변환을 하면, 비디오 신호가 위성 디지탈 라디오(ADR)신호보다 10dB 이상높기 때문에 결국 위성 디지탈 라디오(ADR)신호를 양자화 노이즈가 많아지게 되어 비트 에러율(BER : Bit Error Rate)이 높아지게 되어 문제점이 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to automatic input switching of satellite digital radio broadcasting, and in the conventional subcarrier above video mode, analog (A) / digital (D) The signal is higher than the satellite digital radio (ADR) signal by 10dB or more, so that the quantization noise is increased in the satellite digital radio (ADR) signal and the bit error rate (BER) becomes high.
따라서, 본 발명은 위성 디지탈 라디오(ADR)신호에 비디오신호가 삽입된 경우와 삽입되지 않는 경우 서로 다른 필터를 선택하여 필터링하도록 하는 경우와 삽입되지 않는 경우 서로 다른 필터를 선택하여 필터링하도록 함에 있어, 비디오신호가 삽입된 경우에는 그 비디오신호를 제거하여 ADR신호만 아날로그.디지탈 변환기로 전달하여 줌으로써 그 아날로그/디지탈 변환시의 동작범위를 풀(FULL)로 사용 가능하도록 하여 ADR신호의 비트 에러율이 낮아지도록 한다.Accordingly, in the case where a video signal is inserted into a satellite digital radio (ADR) signal and a case where the video signal is not inserted, different filters are selected and filtered when they are selected and filtered, When a video signal is inserted, the video signal is removed and only the ADR signal is transferred to the analog-to-digital converter so that the operation range of the analog / digital conversion can be used as a full (full) do.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.
제 1 도는 위성 디지탈 라디오방송의 자동입력 절환장치 구성도, 제 2 도는 제 1 도에서, 각 필터의 특성도로서, (가) 및 (다)는 로우페스필터의 특성도이고, (나)는 밴드패스필터의 특성도이다. 제 3 도는 제 1도에서, 서브캐리어 어버브 비디오 모드시 수신되는 스팩트럼.2 is a characteristic diagram of each filter in FIGS. 2 and 3, wherein (a) and (c) are characteristic diagrams of a low-pass filter, (b) Band pass filter. FIG. 3 is a spectrum received in subcarrier averb video mode in FIG.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960007316A KR970068614A (en) | 1996-03-19 | 1996-03-19 | Automatic input switching device of satellite digital radio broadcasting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960007316A KR970068614A (en) | 1996-03-19 | 1996-03-19 | Automatic input switching device of satellite digital radio broadcasting |
Publications (1)
Publication Number | Publication Date |
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KR970068614A true KR970068614A (en) | 1997-10-13 |
Family
ID=66216263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960007316A KR970068614A (en) | 1996-03-19 | 1996-03-19 | Automatic input switching device of satellite digital radio broadcasting |
Country Status (1)
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KR (1) | KR970068614A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030069289A (en) * | 2002-02-19 | 2003-08-27 | (주) 씨케이엔티아이 | Satellite audio tuner system |
-
1996
- 1996-03-19 KR KR1019960007316A patent/KR970068614A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030069289A (en) * | 2002-02-19 | 2003-08-27 | (주) 씨케이엔티아이 | Satellite audio tuner system |
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