JPS6323880U - - Google Patents
Info
- Publication number
- JPS6323880U JPS6323880U JP11819286U JP11819286U JPS6323880U JP S6323880 U JPS6323880 U JP S6323880U JP 11819286 U JP11819286 U JP 11819286U JP 11819286 U JP11819286 U JP 11819286U JP S6323880 U JPS6323880 U JP S6323880U
- Authority
- JP
- Japan
- Prior art keywords
- section
- signal
- attenuation
- attenuation control
- frequency conversion
- 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.)
- Granted
Links
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Circuits Of Receivers In General (AREA)
Description
第１図はこの考案によるチヤンネル選択装置を
実施した衛星放送受信用コンバータの１実施例の
ブロツク図、第２図は同実施例の周波数調整部及
び減衰制御部の詳細な回路図、第３図は従来のチ
ヤンネル選択装置を用いた衛星放送受信用チユー
ナのブロツク図である。
２……高周波増幅／周波数変換部、６……周波
数調整部、１０……チヤンネル選択部、２６……
減衰部。
Fig. 1 is a block diagram of an embodiment of a satellite broadcast receiving converter implementing a channel selection device according to this invention, Fig. 2 is a detailed circuit diagram of the frequency adjustment section and attenuation control section of the same embodiment, and Fig. 3 1 is a block diagram of a satellite broadcast receiving tuner using a conventional channel selection device. 2... High frequency amplification/frequency conversion section, 6... Frequency adjustment section, 10... Channel selection section, 26...
damping section.
Claims (1)
選択するための選択信号を生成するチヤンネル選
択部と、周波数変換部が上記選択されたチヤンネ
ルの映像信号を中間周波数信号に変換するように
上記選択信号に応じて上記周波数変換部に周波数
調整信号を供給する周波数調整部と、上記周波数
変換部よりも後段の処理部に設けられており減衰
制御信号の大きさに応じて減衰量を変化させる減
衰部に上記減衰制御信号を供給する減衰制御部と
を有し、上記減衰制御部を上記選択信号に応じて
上記減衰制御信号の大きさを変化させるように構
成したことを特徴とするチヤンネル選択装置。 a channel selection section that generates a selection signal for selecting any one of the plurality of channel video signals; and a frequency conversion section that converts the video signal of the selected channel into an intermediate frequency signal. a frequency adjustment section that supplies a frequency adjustment signal to the frequency conversion section according to the frequency conversion section; and an attenuation section that is provided in a processing section subsequent to the frequency conversion section and changes the amount of attenuation according to the magnitude of the attenuation control signal. and an attenuation control section that supplies the attenuation control signal, the attenuation control section being configured to change the magnitude of the attenuation control signal in accordance with the selection signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986118192U JP2518865Y2 (en) | 1986-07-30 | 1986-07-30 | Channel selection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986118192U JP2518865Y2 (en) | 1986-07-30 | 1986-07-30 | Channel selection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6323880U true JPS6323880U (en) | 1988-02-17 |
| JP2518865Y2 JP2518865Y2 (en) | 1996-11-27 |
Family
ID=31004415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986118192U Expired - Lifetime JP2518865Y2 (en) | 1986-07-30 | 1986-07-30 | Channel selection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2518865Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04326282A (en) * | 1991-04-25 | 1992-11-16 | Maspro Denkoh Corp | Satellite signal receiver |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6084079A (en) * | 1983-10-14 | 1985-05-13 | Matsushita Electric Ind Co Ltd | Emergency alarm broadcast receiver |
| JPS61111263U (en) * | 1984-12-25 | 1986-07-14 |
-
1986
- 1986-07-30 JP JP1986118192U patent/JP2518865Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6084079A (en) * | 1983-10-14 | 1985-05-13 | Matsushita Electric Ind Co Ltd | Emergency alarm broadcast receiver |
| JPS61111263U (en) * | 1984-12-25 | 1986-07-14 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04326282A (en) * | 1991-04-25 | 1992-11-16 | Maspro Denkoh Corp | Satellite signal receiver |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2518865Y2 (en) | 1996-11-27 |