JPH01171136U - - Google Patents
Info
- Publication number
- JPH01171136U JPH01171136U JP6102988U JP6102988U JPH01171136U JP H01171136 U JPH01171136 U JP H01171136U JP 6102988 U JP6102988 U JP 6102988U JP 6102988 U JP6102988 U JP 6102988U JP H01171136 U JPH01171136 U JP H01171136U
- Authority
- JP
- Japan
- Prior art keywords
- traffic information
- alternative source
- field strength
- circuit
- output
- 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.)
- Granted
Links
- 230000005684 electric field Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Circuits Of Receivers In General (AREA)
- Mobile Radio Communication Systems (AREA)
Description
第１図は本考案の一実施例を示す交通情報受信
装置の要部ブロツク図、第２図は同一周波数を使
用する交通情報局のサービスエリアを示す図、第
３図は第２図に示した交通情報局の電界強度と出
力の関係を示すタイミングチヤート。
１…ラジオ受信回路、２…電界強度検出回路、
３…代替ソース再生機構、４…信号切換回路、７
…タイマ、８…電界強度監視回路、１０…代替ソ
ース再生制御部、１１…交通情報出力制御部。
Figure 1 is a block diagram of the main parts of a traffic information receiving device showing an embodiment of the present invention, Figure 2 is a diagram showing the service area of a traffic information station that uses the same frequency, and Figure 3 is shown in Figure 2. Timing chart showing the relationship between electric field strength and output of a traffic information station. 1...Radio receiving circuit, 2...Field strength detection circuit,
3... Alternative source playback mechanism, 4... Signal switching circuit, 7
...Timer, 8...Field strength monitoring circuit, 10...Alternative source reproduction control section, 11...Traffic information output control section.
Claims (1)
情報局の電界強度を検出する電界強度検出回路と
、前記ラジオ受信回路から出力される交通情報に
代る代替ソースを再生する代替ソース再生機構と
、この代替ソース再生機構から出力される代替ソ
ース再生信号か前記交通情報のどちらか一方を選
択する信号切換回路とを備え、 前記ラジオ受信回路により受信される交通情報
局の受信時間を計測するタイマと、このタイマに
より計測された受信時間が所定値に達すると前記
信号切換回路を動作させ交通情報に代えて代替ソ
ース再生信号を出力させる代替ソース再生制御部
と、前記電界強度検出回路により検出される交通
情報局の電界強度が一旦実用レベル以下になつた
後再び実用レベルに回復したことを監視する電界
強度監視回路と、電界強度が実用レベルに回復し
たことを受けて前記信号切換回路を動作させ代替
ソース再生信号に代えて交通情報を出力させる交
通情報出力制御部とを具備したことを特徴とする
交通情報受信装置。[Claims for Utility Model Registration] A radio receiving circuit for receiving traffic information, a field strength detection circuit for detecting the electric field strength of the traffic information station, and an alternative source for the traffic information output from the radio receiving circuit. A traffic information station, comprising: an alternative source reproducing mechanism for reproducing, and a signal switching circuit for selecting either the alternative source reproducing signal output from the alternative source reproducing mechanism or the traffic information, and the traffic information station is received by the radio receiving circuit. an alternative source reproduction control section that operates the signal switching circuit to output an alternative source reproduction signal in place of the traffic information when the reception time measured by the timer reaches a predetermined value; An electric field strength monitoring circuit that monitors when the electric field strength of the traffic information bureau detected by the electric field strength detection circuit once drops below a practical level and then returns to a practical level, and a a traffic information output control section that operates the signal switching circuit to output traffic information instead of the alternative source reproduction signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6102988U JPH0427233Y2 (en) | 1988-05-09 | 1988-05-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6102988U JPH0427233Y2 (en) | 1988-05-09 | 1988-05-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01171136U true JPH01171136U (en) | 1989-12-04 |
| JPH0427233Y2 JPH0427233Y2 (en) | 1992-06-30 |
Family
ID=31286713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6102988U Expired JPH0427233Y2 (en) | 1988-05-09 | 1988-05-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0427233Y2 (en) |
-
1988
- 1988-05-09 JP JP6102988U patent/JPH0427233Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0427233Y2 (en) | 1992-06-30 |
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