JPS6142126U - Digital channel selection device - Google Patents
Digital channel selection deviceInfo
- Publication number
- JPS6142126U JPS6142126U JP10984185U JP10984185U JPS6142126U JP S6142126 U JPS6142126 U JP S6142126U JP 10984185 U JP10984185 U JP 10984185U JP 10984185 U JP10984185 U JP 10984185U JP S6142126 U JPS6142126 U JP S6142126U
- Authority
- JP
- Japan
- Prior art keywords
- tuning
- channel selection
- selection device
- switching
- digital channel
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は選局装置を構成するチューナのプロツク回路図
である。
第２図はディジタル選局装置に使用する同調回路の回路
図である。
第３図及び第４図は一般に考えられるデイジタル選局装
置のＵＨＦ用同調回路の回路図である。
第５図及び第６図、第７図はそれぞれ本考案を実施した
ディジタル選局装置のｔＪＨＦ用同調回路を示す回路図
である。
そして第８図は本考案を説明するに供する図面である。
Ｃ１， Ｃ２，−Ｃｎ−１， Ｃｎ−容量素子、Ｄ１，
Ｄ２，・・・Ｄｎ−， Ｄｎ・・・スイッチング素子、
Ｌ，ＬＯ・・・同調回路のインダクタンス、ＣＯ１，Ｃ
ｏ２，ＣＳ１，Ｃｓ２・・・別の容量素子。FIG. 1 is a block circuit diagram of a tuner constituting a channel selection device. FIG. 2 is a circuit diagram of a tuning circuit used in a digital tuning device. FIG. 3 and FIG. 4 are circuit diagrams of a UHF tuning circuit of a generally considered digital tuning device. FIG. 5, FIG. 6, and FIG. 7 are circuit diagrams each showing a tJHF tuning circuit of a digital tuning device embodying the present invention. FIG. 8 is a drawing for explaining the present invention. C1, C2, -Cn-1, Cn-capacitive element, D1,
D2,...Dn-, Dn... switching element,
L, LO...Inductance of tuned circuit, CO1, C
o2, CS1, Cs2...Another capacitive element.
Claims (1)
ス間に一定容量の同調容量素子と、スイッチング素子の
直列回路を複数組並列に接続し、前記共振導体の端部と
アース間に接続される別の同調容量の容量値及び／又は
前記共振導体の有効長を一定帯域ごとに切換えるスイッ
チング手段を設けるとともに前記スイッチング素子をデ
イレタル信号により制御して同調回路の容量値を変化さ
せ、それにより選局を行うようにしたことを特徴とする
デイジタル選局装置。A tuning capacitance element with a constant capacity and a series circuit of switching elements are connected in parallel between one end of a resonant conductor acting as an inductance element and the ground, and another tuning capacitance element is connected between the end of the resonant conductor and the earth. Switching means is provided for switching the capacitance value of the capacitor and/or the effective length of the resonant conductor for each fixed band, and the switching element is controlled by a digital signal to change the capacitance value of the tuning circuit, thereby performing tuning. A digital channel selection device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10984185U JPS6142126U (en) | 1985-07-18 | 1985-07-18 | Digital channel selection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10984185U JPS6142126U (en) | 1985-07-18 | 1985-07-18 | Digital channel selection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6142126U true JPS6142126U (en) | 1986-03-18 |
| JPS62283Y2 JPS62283Y2 (en) | 1987-01-07 |
Family
ID=30668974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10984185U Granted JPS6142126U (en) | 1985-07-18 | 1985-07-18 | Digital channel selection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6142126U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015186115A (en) * | 2014-03-25 | 2015-10-22 | 株式会社日立国際電気 | frequency variable filter |
-
1985
- 1985-07-18 JP JP10984185U patent/JPS6142126U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015186115A (en) * | 2014-03-25 | 2015-10-22 | 株式会社日立国際電気 | frequency variable filter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62283Y2 (en) | 1987-01-07 |
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