JPH02130123U - - Google Patents
Info
- Publication number
- JPH02130123U JPH02130123U JP1989038374U JP3837489U JPH02130123U JP H02130123 U JPH02130123 U JP H02130123U JP 1989038374 U JP1989038374 U JP 1989038374U JP 3837489 U JP3837489 U JP 3837489U JP H02130123 U JPH02130123 U JP H02130123U
- Authority
- JP
- Japan
- Prior art keywords
- channel
- station
- receiving
- change command
- frequency synthesizer
- 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 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Noise Elimination (AREA)
Description
第１図はこの考案の一つの実施例に係るテレビ
受信機のブロツク図、第２図と第３図は第１図中
のマイクロコンピユータの動作を示すフローチヤ
ートである。
主な符号の説明、１２……フロントエンド、２
２……ＰＬＬ周波数シンセサイザ、２３……周波
数シンセサイザ式受信手段、２６……ＩＦ増幅回
路、３６……局検出手段、４２……マイクロコン
ピユータ、４４……操作部、４６……アツプキー
、４８…ダウンキー。
FIG. 1 is a block diagram of a television receiver according to one embodiment of this invention, and FIGS. 2 and 3 are flowcharts showing the operation of the microcomputer in FIG. 1. Explanation of main codes, 12...Front end, 2
2... PLL frequency synthesizer, 23... Frequency synthesizer receiving means, 26... IF amplifier circuit, 36... Station detection means, 42... Microcomputer, 44... Operation unit, 46... Up key, 48... Down Key.
Claims (1)
更を指示する選局キーと、周波数シンセサイザ式
受信手段を備えたテレビ受信機において、 周波数シンセサイザ式受信手段で受信した信号
に基づき局の有無を検出する局検出手段と、 選局キーの操作継続時間を計時する計時手段と
、 計時手段で計時した操作継続時間が所定の一定
時間より短いとき第１のチヤンネル変更指令を発
し、計時手段で計時した操作継続時間が所定の一
定時間を越えたとき第２のチヤンネル変更指令を
発するチヤンネル変更指令発生手段と、 第１（第２）のチヤンネル変更指令が発せられ
たとき、周波数シンセサイザ式受信手段を制御し
て現在の受信チヤンネルから１チヤンネル分だけ
変更させるマニユアル選局制御手段と、 第２（第１）のチヤンネル変更指令が発せられ
たとき、周波数シンセサイザ式受信手段を制御し
て現在の受信チヤンネルから順に１チヤンネル分
ずつ受信チヤンネルを変更させていき、局検出手
段が局を検出したところで受信チヤンネルの変更
を停止する自動選局制御手段と、 を備えたことを特徴とするテレビ受信機の選局
装置。[Scope of Claim for Utility Model Registration] In a television receiver equipped with a channel selection key for instructing channel up or channel down changes and a frequency synthesizer receiving means, the presence or absence of a station is determined based on the signal received by the frequency synthesizer receiving means. a station detecting means for detecting a station selection key; a timing means for measuring a duration of operation of a channel selection key; channel change command generating means for issuing a second channel change command when the timed operation duration exceeds a predetermined fixed time; and frequency synthesizer type receiving means for issuing a second channel change command when the first (second) channel change command is issued. manual channel selection control means to change the current receiving channel by one channel; automatic channel selection control means for changing the receiving channel one channel at a time starting from the channel, and stopping changing the receiving channel when the station detecting means detects a station; Channel selection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989038374U JPH02130123U (en) | 1989-03-31 | 1989-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989038374U JPH02130123U (en) | 1989-03-31 | 1989-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02130123U true JPH02130123U (en) | 1990-10-26 |
Family
ID=31546320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989038374U Pending JPH02130123U (en) | 1989-03-31 | 1989-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02130123U (en) |
-
1989
- 1989-03-31 JP JP1989038374U patent/JPH02130123U/ja active Pending
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