JPS63111018U - - Google Patents
Info
- Publication number
- JPS63111018U JPS63111018U JP88087U JP88087U JPS63111018U JP S63111018 U JPS63111018 U JP S63111018U JP 88087 U JP88087 U JP 88087U JP 88087 U JP88087 U JP 88087U JP S63111018 U JPS63111018 U JP S63111018U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- converter
- tuner
- signal
- detection unit
- 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 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Description
第１図及び第２図は本考案の実施例を示し、第
１図はブロツク図、第２図はフローチヤート図、
第３図は従来のテレビチユーナを示すブロツク図
である。
１……ＲＦコンバータ、２……チユーナ部、３
……検出部、４……切替部。
Figures 1 and 2 show an embodiment of the present invention, with Figure 1 being a block diagram and Figure 2 being a flowchart.
FIG. 3 is a block diagram showing a conventional television tuner. 1...RF converter, 2...Tuner section, 3
...Detection section, 4...Switching section.
Claims (1)
するＲＦコンバータとチユーナ部とを備えたテレ
ビチユーナにおいて、 前記ＰＦコンバータの各出力周波数に前記チユ
ーナ部の受信周波数を順次設定するとともに、こ
の設定した周波数の中でテレビ信号の有無あるい
は強弱を検出する検出部と、前記ＲＦコンバータ
の出力周波数を前記検出部でテレビ信号がないあ
るいは弱いと検出された周波数に合致させるよう
切り替える切替部とを備えていることを特徴とす
るテレビチユーナ。[Claims for Utility Model Registration] In a television tuner that includes an RF converter and a tuner unit that selectively outputs a plurality of RF signals having different frequencies, the receiving frequency of the tuner unit is sequentially set to each output frequency of the PF converter. At the same time, a detection unit detects the presence or absence or strength of a TV signal within the set frequency, and the output frequency of the RF converter is switched to match the frequency at which the detection unit detects that there is no or weak TV signal. A television tuner comprising a switching section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP88087U JPS63111018U (en) | 1987-01-07 | 1987-01-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP88087U JPS63111018U (en) | 1987-01-07 | 1987-01-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63111018U true JPS63111018U (en) | 1988-07-16 |
Family
ID=30778266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP88087U Pending JPS63111018U (en) | 1987-01-07 | 1987-01-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63111018U (en) |
-
1987
- 1987-01-07 JP JP88087U patent/JPS63111018U/ja active Pending