JP2552525Y2 - Satellite broadcast receiver - Google Patents
Satellite broadcast receiverInfo
- Publication number
- JP2552525Y2 JP2552525Y2 JP1992003068U JP306892U JP2552525Y2 JP 2552525 Y2 JP2552525 Y2 JP 2552525Y2 JP 1992003068 U JP1992003068 U JP 1992003068U JP 306892 U JP306892 U JP 306892U JP 2552525 Y2 JP2552525 Y2 JP 2552525Y2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- muse
- satellite broadcast
- broadcast receiver
- detection
- 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 - Lifetime
Links
Landscapes
- Television Systems (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は衛星放送受信装置に関
し、特にＭＵＳＥ放送の検出に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a satellite broadcast receiving apparatus, and more particularly to detection of a MUSE broadcast.
【０００２】[0002]
【従来の技術】従来、ＭＵＳＥ放送の検出は、図２に示
すように衛星放送信号ＦＭ復調後の信号（ＦＭ検波信
号）１１をＡ／Ｄ変換器１２に入力し、デジタル信号と
した後、ＭＵＳＥ信号処理専用ＩＣ１３にて、検出して
いた。2. Description of the Related Art Conventionally, a MUSE broadcast is detected by inputting a signal (FM detection signal) 11 after demodulating a satellite broadcast signal FM into an A / D converter 12 as shown in FIG. It was detected by the MUSE signal processing IC 13.
【０００３】又、アナログのＢ．Ｐ．Ｆ（５．７ＭＨ
Z）使用してＮＴＳＣ信号を判別することより 、その背
反としてＭＵＳＥと判別することは、公知である。（特
開平２−１１３７８１、特開平１−１３７８９０、特開
平１−２２１０６８、特開平１−２３６７８２）。An analog B.I. P. F (5.7MH
Z) It is known to discriminate MUSE as a contradiction to discriminate using NTSC signals. (JP-A-2-113378, JP-A-1-137890, JP-A-1-221068, JP-A-1-236782).
【０００４】[0004]
【考案が解決しようとする課題】従来のデジタル信号変
換後、ＭＵＳＥ信号の検出を行なう方法では、Ａ／Ｄ変
換器、ＭＵＳＥ信号専用処理ＩＣが必要となるため、回
路規模・コスト共に大きいものとなった。 又、アナロ
グ信号のまま、５．７ＭＨZのＮＴＳＣ信号の背反とし
てＭＵＳＥを判別する方法では、ＭＵＳＥ信号の特性そ
のものを判別しているものではないため、誤判別の要素
を含んでいる。The conventional method of detecting a MUSE signal after converting a digital signal requires an A / D converter and a dedicated processing IC for the MUSE signal. became. Further, while an analog signal, the method to determine the MUSE as contradictory of NTSC signals 5.7MH Z, because does not have to determine the exact properties of the MUSE signal, and includes elements of misclassification.
【０００５】それ故に本考案の目的は、回路規模・コス
ト共に小さく判別制度の他界ＭＵＳＥ信号検出器を持つ
衛星放送受信装置を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a satellite broadcast receiving apparatus having a MUSE signal detector having a small discrimination system and small circuit size and cost.
【０００６】[0006]
【課題を解決するための手段】従って、本考案は、上述
の目的を達成するために、ＦＭ検波信号の３０ＨZ成分
を取り出す３０ＨZ Ｂ．Ｐ．Ｆ と増幅器及びこれを検
出する検波器を備えたものである。SUMMARY OF THE INVENTION Accordingly, the present invention is, in order to achieve the above object, 30H Z B. taking out 30H Z components of the FM detection signal P. F and an amplifier and a detector for detecting the same.
【０００７】[0007]
【実施例】次に本考案の実施例について、図１を参照し
て説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIG.
【０００８】同図において、２は３０ＨZ Ｂ．Ｐ．Ｆで
あって、これにより、ＭＵＳＥ信号中の音 声信号及び
データ信号部分の成分が安定していることより得られる
３０ＨZを取り出し、検波可能レベルまで増幅する増幅
器３へ入力する。さらにこれを検波器４に入力し、その
出力にて判別を行なう。[0008] In the figure, 2 30H Z B. P. A F, thereby, the component of the voice signal and a data signal portion in the MUSE signal is removed 30H Z obtained from it is stable, and inputs to the amplifier 3 which amplifies up detection possible level. Further, this is input to the detector 4 and discrimination is performed based on the output.
【０００９】[0009]
【考案の効果】以上説明したように本考案は、従来デジ
タル変換後ＭＵＳＥ判別を行なっていたものを、アナロ
グ信号のまま判別できるため、回路規模及びコストを小
さく出来るという結果を有する。As described above, the present invention has a result that the circuit size and the cost can be reduced because the MUSE determination after the conventional digital conversion can be determined as an analog signal.
【図１】本考案のＭＵＳＥ検出回路である。FIG. 1 is a MUSE detection circuit of the present invention.
【図２】従来ＭＵＳＥ検出回路である。FIG. 2 is a conventional MUSE detection circuit.
１ ＦＭ検波信号 ２ ３０ＨZ Ｂ．Ｐ．Ｆ ３ 増幅器 ４ 検波器 ５ 出力（判別） １１ ＦＭ検波信号 １２ Ａ／Ｄ変換器 １３ ＭＵＳＥ信号処理用ＩＣ １４ 出力（判別）1 FM detection signal 2 30H Z B. P. F 3 amplifier 4 detector 5 output (discrimination) 11 FM detection signal 12 A / D converter 13 MUSE signal processing IC 14 output (discrimination)
Claims (1)
調後の信号を入力して、３０ＨZの成分を取り出すバン
ドパスフィルタと、このバンドパスフィルタより取り出
された３０ＨZの信号を増幅する増幅器と、この増幅さ
れた信号を検出する検波器を備えること を特徴とする
衛星放送受信装置。We claim: 1. Enter the signal after FM demodulation of the satellite signals when MUSE broadcasting, a band-pass filter for extracting a component of the 30H Z, amplifies a signal 30H Z taken out from the band-pass filter And a detector for detecting the amplified signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992003068U JP2552525Y2 (en) | 1992-01-30 | 1992-01-30 | Satellite broadcast receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992003068U JP2552525Y2 (en) | 1992-01-30 | 1992-01-30 | Satellite broadcast receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0563181U JPH0563181U (en) | 1993-08-20 |
| JP2552525Y2 true JP2552525Y2 (en) | 1997-10-29 |
Family
ID=11547019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992003068U Expired - Lifetime JP2552525Y2 (en) | 1992-01-30 | 1992-01-30 | Satellite broadcast receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2552525Y2 (en) |
-
1992
- 1992-01-30 JP JP1992003068U patent/JP2552525Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0563181U (en) | 1993-08-20 |
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