JPS63140727U - - Google Patents
Info
- Publication number
- JPS63140727U JPS63140727U JP3199487U JP3199487U JPS63140727U JP S63140727 U JPS63140727 U JP S63140727U JP 3199487 U JP3199487 U JP 3199487U JP 3199487 U JP3199487 U JP 3199487U JP S63140727 U JPS63140727 U JP S63140727U
- Authority
- JP
- Japan
- Prior art keywords
- local oscillation
- sweep
- automatic
- tuning
- sweeping
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims 7
- 238000010408 sweeping Methods 0.000 claims 5
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Description
第１図は受信機のオートチユーニング装置の全
体回路図である。
１……アツプキー、２……ダウンキー、３……
制御部、４……同調カウンタ、５……ラストデー
タメモリ、６……一致回路、７……スキヤン回数
カウンタ、９……同調電圧発生回路、１１……混
合回路、１２……アンテナ、１５……検波回路、
１７……スピーカ、１８……同調検出回路。
FIG. 1 is an overall circuit diagram of an autotuning device for a receiver. 1...Up key, 2...Down key, 3...
Control unit, 4... Tuning counter, 5... Last data memory, 6... Matching circuit, 7... Scan number counter, 9... Tuning voltage generation circuit, 11... Mixing circuit, 12... Antenna, 15... ...detection circuit,
17... Speaker, 18... Tuning detection circuit.
Claims (1)
調受信を行う同調受信手段と、 上記局部発振回路の局部発振周波数を自動的に
掃引する自動掃引手段と、 上記同調受信手段が特定の放送電波に同調した
ことを検出する同調検出手段と、 この同調検出手段の検出結果に応じて、上記自
動掃引手段の自動掃引を停止させる第１の掃引停
止手段とを有する受信機のオートチユーニング装
置において、 上記自動掃引手段による掃引が一順以上行われ
ても、上記同調検出手段による検出がないことを
判別する判別手段と、 この判別手段の判別結果に応じて、上記自動掃
引手段の自動掃引を停止させる第２の掃引停止手
段とを有することを特徴とする受信機のオートチ
ユーニング装置。 (2) 上記第２の掃引停止手段は、上記局部発振
回路の局部発振周波数が、前回同調選局した局に
ついての局部発振周波数と同じ値になつた時点で
自動掃引を停止させる手段であることを特徴とす
る実用新案登録請求の範囲第１項に記載の受信機
のオートチユーニング装置。[Claims for Utility Model Registration] (1) Tuned reception means for performing tuned reception based on an oscillation signal from a local oscillation circuit; automatic sweeping means for automatically sweeping the local oscillation frequency of the local oscillation circuit; The tuning detecting means detects that the tuning receiving means is tuned to a specific broadcast radio wave, and the first sweep stopping means stops the automatic sweeping of the automatic sweeping means in accordance with the detection result of the tuning detecting means. In the auto-tuning device of the receiver, a discriminating means for discriminating that there is no detection by the tuning detecting means even if one or more sweeps are performed by the automatic sweeping means; An auto-tuning device for a receiver, comprising: second sweep stop means for stopping the automatic sweep of the automatic sweep means. (2) The second sweep stop means is a means for stopping the automatic sweep when the local oscillation frequency of the local oscillation circuit reaches the same value as the local oscillation frequency of the last tuned station. An auto-tuning device for a receiver according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3199487U JPS63140727U (en) | 1987-03-06 | 1987-03-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3199487U JPS63140727U (en) | 1987-03-06 | 1987-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63140727U true JPS63140727U (en) | 1988-09-16 |
Family
ID=30838247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3199487U Pending JPS63140727U (en) | 1987-03-06 | 1987-03-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63140727U (en) |
-
1987
- 1987-03-06 JP JP3199487U patent/JPS63140727U/ja active Pending
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