JPH0352485A - Video demodulating/processing adaptor - Google Patents

Video demodulating/processing adaptor

Info

Publication number
JPH0352485A
JPH0352485A JP18841289A JP18841289A JPH0352485A JP H0352485 A JPH0352485 A JP H0352485A JP 18841289 A JP18841289 A JP 18841289A JP 18841289 A JP18841289 A JP 18841289A JP H0352485 A JPH0352485 A JP H0352485A
Authority
JP
Japan
Prior art keywords
terminal
tuner
video signal
detection output
output terminal
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.)
Pending
Application number
JP18841289A
Other languages
Japanese (ja)
Inventor
Atsushi Nishizono
西薗 淳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP18841289A priority Critical patent/JPH0352485A/en
Publication of JPH0352485A publication Critical patent/JPH0352485A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To introduce a video signal from an FM detection output when a video output signal of a BS tuner is required by providing a power supply terminal to be coupled with the power terminal for a tuner for satellite broadcast reception to supply a power supply to a demodulating/processing circuit. CONSTITUTION:A power supply terminal 11 to supply power to a demodulating/ processing circuit while being coupled with a power supply terminal of a BS tuner is provided. That is, an input terminal 10 connects to an FM detection output terminal 4 of a BS tuner and a power terminal of the BS tuner connects to the power terminal 11, then an FM detection output from the FM detection output terminal is demodulated by a video signal demodulating/processing circuit 9 comprising a de-emphasis circuit 12, a low pass filter 14, a clamp circuit 14 and an amplifier circuit 15 into a video signal, which is introduced from the video signal output terminal. Thus, a television receiver is extended by connecting the television receiver 8 to the video signal output terminal 16.

Description

【発明の詳細な説明】 童朶±■剋貝え昼 本発明は衛星放送チューナ(以下rBSチューナ」とい
う)のFM検波出力端子より映像fS号を得るようにし
たBSチューナ用映像復調処理アダプターに関するもの
である。
[Detailed Description of the Invention] The present invention relates to a video demodulation processing adapter for a BS tuner that obtains a video fS signal from an FM detection output terminal of a satellite broadcast tuner (hereinafter referred to as "rBS tuner"). It is something.

藍朱坐蕉韮 従来、BSチェーナには第3図に示すようにテレビジゴ
ン受像機(以下rTV受像機」という)(30)やVT
Rのビデオ入力端子に接続するための映像信号出力端子
(3l)の他にFM検波出力端子(32)が設けられて
いる。このFM検波出力端子(32)は新放送方式対応
のための拡張用端子であり、例えばMUSE信号をNT
SC信号に変換するMUSE/NTSCダウンコンバー
タ(33)とか、MUSE信号をデコードするMUSE
デコーダ−(34)とか有料放送時に使われるスクラン
ブルをかけた信号を元の信号に戻す有料放送ディスクラ
ンブラー(35)等を接続し、各新放送方式に対応させ
るようになっている.従って、上記新放送方式に対応す
る場合以外は、上記FM検波出力端子(32)を遊ばせ
た状態にしている。
Traditionally, BS chains have been equipped with television receivers (hereinafter referred to as rTV receivers) (30) and VT receivers, as shown in Figure 3.
In addition to a video signal output terminal (3l) for connection to the R video input terminal, an FM detection output terminal (32) is provided. This FM detection output terminal (32) is an expansion terminal for supporting new broadcasting systems.
MUSE/NTSC down converter (33) that converts to SC signal, MUSE that decodes MUSE signal
A decoder (34) and a pay broadcast descrambler (35) that returns the scrambled signal used during pay broadcast to the original signal are connected to make it compatible with each new broadcasting system. Therefore, except when supporting the new broadcasting system, the FM detection output terminal (32) is left open.

又舅迫嗅澱巳』ゼ5=!:t!渫題 BSチューナのFM検波出力端子は、新放送方式対応の
目的で設けられているので、BSチューナに更に1台の
TV受像機を接続しようとする場合、BSチューナのF
M検波出力端子が空いているにもかかわらず、該FM検
波出力端子を利用することができなかった。
Mata Sakoho Danmi” Ze 5=! :t! The FM detection output terminal of the BS tuner is provided for the purpose of supporting new broadcasting systems, so if you want to connect one more TV receiver to the BS tuner, the FM detection output terminal of the BS tuner
Although the M detection output terminal was vacant, the FM detection output terminal could not be used.

i   ″゜ るための 本発明は前記の問題を解決するため、BSチューナに設
けられたFM検波出力端子に接続するための入力端子と
、該入力端子に接続され上記BSチューナのFM検波出
力を映像信号に変換するためのディエンファシス回路,
ローバスフィルタ,クランブ回路及び増幅回路を含む映
像信号の復調処理回路と、該復調処理回路の出力を外部
に導出するための映倣信号出力端子と、上記BSチュー
ナの電源端子に結合して上記復調処理回路にt源を供給
するための電源端子とで構威している.立一貝 BSチューナのFM検波出力端子に上記入力端子を接続
し、上記電源端子にBSチューナの電源端子を接続する
と、上記FM検波出力端子からのFM検波出力はディエ
ンファシス回路,ローバスフィルタ,クランブ回路及び
増幅回路より或る映像信号の復調処理回路で映像信号に
復調され、映像信号出力端子より映像信号として導出さ
れる.従って、上記映像信号出力端子にTV受像機を接
続することによってTV受像機を増設することができる
. 叉1(班 第F図及び第2図は本発明の実施例のブロック図である
In order to solve the above problems, the present invention has an input terminal for connecting to an FM detection output terminal provided on a BS tuner, and an input terminal connected to the input terminal to output the FM detection output of the BS tuner. De-emphasis circuit for converting to video signal,
a video signal demodulation processing circuit including a low-pass filter, a clamp circuit, and an amplification circuit; a video signal output terminal for deriving the output of the demodulation processing circuit to the outside; It also functions as a power supply terminal for supplying the t source to the demodulation processing circuit. When the above input terminal is connected to the FM detection output terminal of the Tachiichigai BS tuner and the power supply terminal of the BS tuner is connected to the above power supply terminal, the FM detection output from the above FM detection output terminal is outputted to the de-emphasis circuit, low-pass filter, A certain video signal demodulation processing circuit uses the clamp circuit and the amplifier circuit to demodulate the video signal, and the video signal is output from the video signal output terminal. Therefore, by connecting a TV receiver to the video signal output terminal, it is possible to add a TV receiver. Figures F and 2 are block diagrams of embodiments of the present invention.

図において、(1)は映像出力端子(2)にTV受像機
(3)を接続し、衛星放送を受像するBSチューナであ
り、該BSチューナ(1)には新放送方式に対応するた
めFM検波出力端子(4)が設けられている。このFM
検波出力端子(4)には新放送方式に対応してMUSE
/NTSCダウンコンバータ(5).MUSEデコーダ
(6),有料放送デスクランブラー(7〉等が選択的に
接続され、将来の衛星放送に対する拡張性を持たせるも
のであるが、本発明はこのFM検波出力端子(4)を利
用して別のT■受像機(8)或いはVTR等を増設でき
るようにしようとするものである.(9)は本発明の映
像復調処理アダプターであり、該アダプター(9)は上
記BSチェーナ(1)のFM検波出力端子(4)に接続
される入力端子(10)と、上記BSチューナ(1)よ
り電源電圧を供給するための電源端子(11)を具えて
いる.上記入力端子(10)はディエンファシス回路(
12), ローバスフィルタ (以下rLPF,という
)(13).クランブ回路(14)及びアンプ(15)
を順次介して上記TV受像機(8)を接続する映像信号
出力端子(l6)に導かれる. 従って、BSチューナ(1)のFM検波出力端子(4)
に映像復調処理アダプター(9〉の入力端子(10)を
接続し、電源端7−(11)をBSチューナ(1)の電
源に接続するとFM検波出力端子(4)から導出される
FM検波出力は、上記アダプター〈9)のディエンファ
シス回路(12)に導かれる。衛星放送における映像信
号はSN比の改善のため、プリエンファシスがかけられ
ており、またディスパーサル信号が加えられているため
、入力端子(10)に導かれたFM検波出力はディエン
フ1シス回路(12).L P F (13)及びクラ
ンプ回路(14)を通し、元の映像信号に復調する.そ
して、出力端子(l6)より導出される復調された映像
信号は相互接続規格の信号としてモニタTV受像機(8
)或いはVTR (図示せず)等に導かれ、衛星放送の
画像を表示、或いは録画させることができる. 且璽坐里玉 本発明は以上のような構威であるからBSチューナの映
像出力信号を必要とするとき、該BSチューナの映像出
力端子が全て他の機器に接続されて空いていない場合に
も本来、新放送方式に対応する目的で設けられているF
M検波出力より映像信号を導出することができ、衛星放
送の画像を従来より一つ多く受信することが可能になる
ので、機器の利用範囲を拡大させることができる.
In the figure, (1) is a BS tuner that connects a TV receiver (3) to the video output terminal (2) and receives satellite broadcasting. A detection output terminal (4) is provided. This FM
The detection output terminal (4) is equipped with MUSE in response to the new broadcasting system.
/NTSC down converter (5). A MUSE decoder (6), pay broadcast descrambler (7), etc. are selectively connected to provide expandability for future satellite broadcasting, but the present invention utilizes this FM detection output terminal (4). It is intended to be possible to add another T receiver (8) or VTR, etc. (9) is the video demodulation processing adapter of the present invention, and the adapter (9) is the above-mentioned BS chainer (1). ), and a power supply terminal (11) for supplying power supply voltage from the BS tuner (1).The input terminal (10) is the de-emphasis circuit (
12), low-pass filter (hereinafter referred to as rLPF) (13). Clamp circuit (14) and amplifier (15)
are sequentially guided to the video signal output terminal (16) to which the TV receiver (8) is connected. Therefore, the FM detection output terminal (4) of the BS tuner (1)
When the input terminal (10) of the video demodulation processing adapter (9> is connected to is guided to the de-emphasis circuit (12) of the adapter (9). Video signals in satellite broadcasting are pre-emphasized to improve the S/N ratio and a dispersal signal is added, so the FM detection output led to the input terminal (10) is de-emphasized by a de-emphasis circuit (10). 12). It is demodulated to the original video signal through LPF (13) and clamp circuit (14). The demodulated video signal derived from the output terminal (l6) is then sent to the monitor TV receiver (8) as a signal of the interconnection standard.
) or a VTR (not shown), etc., to display or record satellite broadcast images. Since the present invention has the above structure, when the video output signal of the BS tuner is required, if all the video output terminals of the BS tuner are connected to other devices and are not available, F, which was originally established for the purpose of supporting the new broadcasting system
Since a video signal can be derived from the M detection output and it is possible to receive one more satellite broadcast image than before, the range of use of the device can be expanded.

【図面の簡単な説明】[Brief explanation of drawings]

第1図及び第2図は本発明の一実施例のブロック図、第
3図は従来例のブロック図である.(1) 一B Sチ
ェーナ,(4)一・・FM検波出力端子.(9) 一映
像復調処理アダプター (lO)・一入力端子, (11)一・・電源端子,(
12)・−ディエンファシス回路. (13)・−・L
PF,(14)−−クランブ回路. (15)・・一増
幅回路,(16)−一一映像信号出力端子。
1 and 2 are block diagrams of one embodiment of the present invention, and FIG. 3 is a block diagram of a conventional example. (1) 1BS chainer, (4) 1...FM detection output terminal. (9) 1 video demodulation processing adapter (lO), 1 input terminal, (11) 1...power terminal, (
12) - De-emphasis circuit. (13)・-・L
PF, (14)--clamp circuit. (15)...1 amplifier circuit, (16)-11 video signal output terminal.

Claims (1)

【特許請求の範囲】[Claims] (1)衛星放送受信用チューナに設けられたFM検波出
力端子に接続するための入力端子と、該入力端子に接続
され、上記衛星放送受信用チューナのFM検波出力を映
像信号に変換するためのディエンファシス回路、ローパ
スフィルタ、クランプ回路及び増幅回路を含む映像信号
の復調処理回路と、該復調処理回路の出力を外部に導出
するための映像信号出力端子と、上記衛星放送受信用チ
ューナの電源端子に結合して上記復調処理回路に電源を
供給するための電源端子とを設けたことを特徴とする衛
星放送チューナ用映像復調処理アダプター。
(1) An input terminal for connecting to the FM detection output terminal provided on the satellite broadcast reception tuner, and an input terminal connected to the input terminal for converting the FM detection output of the satellite broadcast reception tuner into a video signal. A video signal demodulation processing circuit including a de-emphasis circuit, a low-pass filter, a clamp circuit, and an amplification circuit, a video signal output terminal for outputting the output of the demodulation processing circuit to the outside, and a power supply terminal for the satellite broadcast reception tuner. A video demodulation processing adapter for a satellite broadcasting tuner, characterized in that a power supply terminal is provided for coupling to the demodulation processing circuit and supplying power to the demodulation processing circuit.
JP18841289A 1989-07-20 1989-07-20 Video demodulating/processing adaptor Pending JPH0352485A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18841289A JPH0352485A (en) 1989-07-20 1989-07-20 Video demodulating/processing adaptor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18841289A JPH0352485A (en) 1989-07-20 1989-07-20 Video demodulating/processing adaptor

Publications (1)

Publication Number Publication Date
JPH0352485A true JPH0352485A (en) 1991-03-06

Family

ID=16223206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18841289A Pending JPH0352485A (en) 1989-07-20 1989-07-20 Video demodulating/processing adaptor

Country Status (1)

Country Link
JP (1) JPH0352485A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9638807B2 (en) 2008-08-07 2017-05-02 Koninklijke Philips N.V. Scintillating material and related spectral filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9638807B2 (en) 2008-08-07 2017-05-02 Koninklijke Philips N.V. Scintillating material and related spectral filter

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