JPS6170452U - - Google Patents
Info
- Publication number
- JPS6170452U JPS6170452U JP15433184U JP15433184U JPS6170452U JP S6170452 U JPS6170452 U JP S6170452U JP 15433184 U JP15433184 U JP 15433184U JP 15433184 U JP15433184 U JP 15433184U JP S6170452 U JPS6170452 U JP S6170452U
- Authority
- JP
- Japan
- Prior art keywords
- tuner
- level
- antennas
- level detection
- detection means
- 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 7
- 230000005236 sound signal Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案による装置の一実施例を示すブ
ロツク図及び第２図は従来装置の一例を示すブロ
ツク図である。
１１ａ〜１１ｄ……アンテナ、１２……ＴＶチ
ユーナ、１３……スイツチ部、１４……タイミン
グコントロール回路、１５……ビデオ信号レベル
検出回路、１６……音声信号レベル検出回路、１
７……比較器、１８……順序回路、１９……制御
回路。
FIG. 1 is a block diagram showing an embodiment of a device according to the present invention, and FIG. 2 is a block diagram showing an example of a conventional device. 11a to 11d...Antenna, 12...TV tuner, 13...Switch section, 14...Timing control circuit, 15...Video signal level detection circuit, 16...Audio signal level detection circuit, 1
7... Comparator, 18... Sequential circuit, 19... Control circuit.
Claims (1)
複数のアンテナのうちの１つを前記ＴＶチユーナ
に接続する切換え手段と、前記ＴＶチユーナから
の垂直同期信号及び水平同期信号に基づいてタイ
ミング信号を発生するタイミングコントロール手
段と、前記タイミング信号に応じ垂直帰線期間に
おいて前記ＴＶチユーナからのビデオ信号のレベ
ルを検知する第１のレベル検出手段と、前記ＴＶ
チユーナからの音声信号のレベルを検知する第２
のレベルを検知する第２のレベル検出手段と、前
記第１のレベル検出手段の出力を相互に比較する
比較手段と、該比較手段による比較結果によりレ
ベルの大きい順にアンテナに順位をつけ、上位２
本のアンテナを選択する順序手段と、該順序手段
によつて選定された２本のアンテナのデータを入
力し、垂直帰線期間において最強入力レベルのア
ンテナを選択するように前記切換え手段を制御し
、次の垂直帰線期間までの間前記第２のレベル検
出手段の出力入力し、該入力に落ち込みがあつた
とき前記選定された２本のアンテナのうち現在選
択されていないアンテナを選択するように前記切
換え手段を制御する制御手段とを備えることを特
徴とするダイバーシテイ受信装置。 (2) 前記制御回路は前記選定された２本のアン
テナ相互間の切換え制御を水平同期信号の発生タ
イミングに合せて行うことを特徴とする実用新案
登録請求の範囲第(1)項記載のダイバーシテイ受
信装置。[Claims for Utility Model Registration] (1) A plurality of antennas, a TV tuner, switching means for connecting one of the plurality of antennas to the TV tuner, a vertical synchronizing signal from the TV tuner, and a horizontal a timing control means for generating a timing signal based on a synchronization signal; a first level detection means for detecting a level of a video signal from the TV tuner during a vertical retrace period according to the timing signal;
The second one detects the level of the audio signal from the tuner.
a second level detection means for detecting the level of the first level detection means; a comparison means for comparing the outputs of the first level detection means with each other;
A sequential means for selecting one antenna, and data on the two antennas selected by the sequential means are input, and the switching means is controlled so as to select the antenna with the strongest input level during the vertical retrace period. , the output of the second level detection means is input until the next vertical retrace period, and when the input falls, the antenna that is not currently selected is selected from among the two selected antennas. and control means for controlling the switching means. (2) The diver according to claim 1, wherein the control circuit performs switching control between the two selected antennas in synchronization with the generation timing of a horizontal synchronization signal. City receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15433184U JPS6170452U (en) | 1984-10-15 | 1984-10-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15433184U JPS6170452U (en) | 1984-10-15 | 1984-10-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6170452U true JPS6170452U (en) | 1986-05-14 |
Family
ID=30712326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15433184U Pending JPS6170452U (en) | 1984-10-15 | 1984-10-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6170452U (en) |
-
1984
- 1984-10-15 JP JP15433184U patent/JPS6170452U/ja active Pending
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