JPH0478871U - - Google Patents
Info
- Publication number
- JPH0478871U JPH0478871U JP1990123302U JP12330290U JPH0478871U JP H0478871 U JPH0478871 U JP H0478871U JP 1990123302 U JP1990123302 U JP 1990123302U JP 12330290 U JP12330290 U JP 12330290U JP H0478871 U JPH0478871 U JP H0478871U
- Authority
- JP
- Japan
- Prior art keywords
- present
- vehicle
- block diagram
- change
- control 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
- 238000010586 diagram Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
Description
第１図は本考案の車載ＴＶの一実施例を示すブ
ロツク図。第２図は本考案の電波強弱検出手段を
ロツドアンテナ一本で実現するブロツク図であり
、第３図は指向性の異るロツドアンテナ日本で実
現させるブロツク図。第４図は本考案のＴＶ制御
手段の回路図。第５図は本考案のダイバーシテイ
コントローラーを利用し実現させるブロツク図。
第６図は本考案の車載ＴＶの一実施例を示す構成
図。
１……ロツドアンテナ、２……電波強弱変化量
検出手段、３……ＴＶ制御手段、４……ＴＶ、６
……レベルコンパレーター、７……検出クロツク
、８……変化量検出信号、９……ＴＶ電源スイツ
チ、１０……リセツトスイツチ、１１……トラン
ジスター、１２……カー電源、１３……ラツチ回
路、１４，１５，１６，１７……アンテナ、１８
……アンテナ切換えユニツト、１９……ＣＰＵ、
２０……カーアダプタ、２１……安全ユニツト。
FIG. 1 is a block diagram showing an embodiment of the in-vehicle TV of the present invention. Fig. 2 is a block diagram for realizing the radio wave strength detection means of the present invention with a single rod antenna, and Fig. 3 is a block diagram for realizing the radio wave strength detection means of the present invention using a Japanese rod antenna with different directivity. FIG. 4 is a circuit diagram of the TV control means of the present invention. Figure 5 is a block diagram that is realized using the diversity controller of the present invention.
FIG. 6 is a configuration diagram showing an embodiment of the in-vehicle TV of the present invention. DESCRIPTION OF SYMBOLS 1...Rod antenna, 2...Radio wave strength variation detection means, 3...TV control means, 4...TV, 6
... Level comparator, 7 ... Detection clock, 8 ... Change amount detection signal, 9 ... TV power switch, 10 ... Reset switch, 11 ... Transistor, 12 ... Car power supply, 13 ... Latch circuit, 14, 15, 16, 17... antenna, 18
...Antenna switching unit, 19...CPU,
20... Car adapter, 21... Safety unit.
Claims (1)
検出手段、車載ＴＶの映像あるいは音声のどちら
か一方または両方を消す、ＴＶ制御手段を備えた
ことを特徴とする車載ＴＶ。 An in-vehicle TV characterized in that it is equipped with a means for detecting a change in the strength of radio waves or a change in the direction thereof, and a TV control means for turning off either or both of the video and audio of the in-vehicle TV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990123302U JPH0478871U (en) | 1990-11-22 | 1990-11-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990123302U JPH0478871U (en) | 1990-11-22 | 1990-11-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0478871U true JPH0478871U (en) | 1992-07-09 |
Family
ID=31871016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990123302U Pending JPH0478871U (en) | 1990-11-22 | 1990-11-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0478871U (en) |
-
1990
- 1990-11-22 JP JP1990123302U patent/JPH0478871U/ja active Pending
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