JPH0338780B2 - - Google Patents
Info
- Publication number
- JPH0338780B2 JPH0338780B2 JP56015407A JP1540781A JPH0338780B2 JP H0338780 B2 JPH0338780 B2 JP H0338780B2 JP 56015407 A JP56015407 A JP 56015407A JP 1540781 A JP1540781 A JP 1540781A JP H0338780 B2 JPH0338780 B2 JP H0338780B2
- Authority
- JP
- Japan
- Prior art keywords
- station
- level
- reception level
- reception
- tuner
- 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.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims description 24
- 230000010355 oscillation Effects 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
- H03G3/348—Muting in response to a mechanical action or to power supply variations, e.g. during tuning; Click removal circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
- H03G3/341—Muting when no signals or only weak signals are present
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
- H03J1/0058—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor provided with channel identification means
- H03J1/0066—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor provided with channel identification means with means for analysing the received signal strength
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Noise Elimination (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Circuits Of Receivers In General (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Description
【発明の詳細な説明】
この発明は、受信機に関し、特に、第１の局を
受信中に所定時間期間だけ第２の局を受信するよ
うにチユーナの同調周波数を切替え、上記第２の
局の信号の受信レベルを検出する受信機を対象と
し、現在受信中の受信レベルを検出するととも
に、上記所定時間期間中に他の受信状態の良好な
局を選択し、受信するようにした受信機に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a receiver, and more particularly, to a receiver, which switches the tuning frequency of a tuner so that it receives a second station for a predetermined period of time while receiving a first station; A receiver that detects the reception level of a signal currently being received, and also selects and receives from another station with a good reception condition during the predetermined time period. Regarding.
従来、この様な同調制御手段を備えた受信機で
は、受信状態の品質の良、不良に関係なく、受信
レベルが低下して、他局の同調の指示があると、
即座に他局を同調、受信レベルがある規定したレ
ベル以上であれば、その局を受信させている。そ
のため、必ずしも、受信品質の良好な局を受信し
ていない場合がある。すなわち、受信レベルが高
くても、受信電波の多重妨害（マルチパス妨害）
や、混変調、相互変調妨害等によつて受信品質が
低下し、歪を供つた耳ざわりな雑音を有する局を
受信する。 Conventionally, in a receiver equipped with such a tuning control means, when the reception level drops and there is an instruction to tune from another station, regardless of whether the reception quality is good or bad,
Immediately tunes to another station, and if the reception level is above a certain specified level, that station is allowed to receive. Therefore, stations with good reception quality may not always be received. In other words, even if the reception level is high, there is multiple interference (multipath interference) in the received radio waves.
The reception quality is degraded due to cross-modulation, intermodulation interference, etc., and stations are received that have unpleasant noise accompanied by distortion.
それゆえに、この発明の主たる目的は、現在局
の受信レベルが低下して、他局に切替る時、受信
レベルの良好な局で、しかも、受信品質も良好な
局を受信することができる。受信性能を向上した
極めて実際的な受信機を提供することである。 Therefore, the main object of the present invention is to be able to receive a station with a good reception level and a good reception quality when the reception level of the current station decreases and the station is switched to another station. An object of the present invention is to provide an extremely practical receiver with improved reception performance.
この発明は、要約すれば、チユーナの同調周波
数を制御するための同調制御手段を備えた受信機
において、チユーナの出力の歪レベルと、受信レ
ベルに応じて、チユーナの同調を指令する同調指
令とに基づいて、チユーナの同調動作を制御する
ようにしたものである。 To summarize, the present invention provides a receiver equipped with a tuning control means for controlling the tuning frequency of a tuner, and a tuning command that commands tuning of the tuner according to the distortion level of the output of the tuner and the reception level. The tuning operation of the tuner is controlled based on the following.
以下、本発明の一実施例を図に従つて説明す
る。 An embodiment of the present invention will be described below with reference to the drawings.
この例では、ある局を受信中、極く短時間の
間、他局に切り替えて、その受信レベルを検出で
きる受信機を構成している。 In this example, a receiver is configured that can switch to another station for a very short time while receiving signals from one station and detect the reception level of the other station.
第１図において、アンテナ１に誘起された信号
は、チユーナ２に与えられる。 In FIG. 1, a signal induced in antenna 1 is given to tuner 2. In FIG.
このチユーナ２で受信される検波された出力
は、ミユーテイング回路３および低周波回路４を
介して、スピーカー５に与えられる。 The detected output received by this tuner 2 is given to a speaker 5 via a muting circuit 3 and a low frequency circuit 4.
チユーナ２及びミユーテイング回路３には、マ
イクロコンピユータ等を含むコントロール部７か
ら、同調周波数を切替えるための信号およびミユ
ーテイングをオンまたはオフするための信号がそ
れぞれ与えられる。 The tuner 2 and the muting circuit 3 are each given a signal for switching the tuning frequency and a signal for turning muting on or off from a control section 7 including a microcomputer or the like.
又、ミユーテイングをオンにするための信号が
与えられている時は、チユーナ２の出力は低周波
アンプ４には与えられず、音声が中断される。 Further, when a signal for turning on muting is applied, the output of the tuner 2 is not applied to the low frequency amplifier 4, and the audio is interrupted.
またチユーナ２の出力は、出力の歪レベルを検
出する歪レベル検出回路８にも与えられ、チユー
ナ２のもう一方の出力は、受信レベルを検出する
受信レベル検出回路６に与えられる。歪レベル検
出回路８は、例えば、図示しないが歪成分を高調
波成分として処理するH.P.F.（Hing Pass
Filter）、アンプ及びコンパレーター等を含んで
構成される。すなわち、チユーナ２の出力は、オ
ーデイオ信号であるものの、オーデイオ周波数帯
域よりも高い高調波成分を歪成分として有してお
り、このオーデイオ信号であるチユーナ２の出力
はH.P.Fによつて高調波成分のみが抽出されアン
プによつて増幅後、コンパレータによつてパルス
信号に波形成形される。そして、この歪レベル検
出回路８の出力（上記パルス信号）は、タイマー
及びカウンター等で構成される時間検出回路９に
導かれ、タイマーにより、一定時間、歪レベル検
出回路８のパルス信号がカウンターで計数され、
この一定時間内に所定の計数値よりもパルス信号
のパルス数が少ない場合、すなわち歪レベルが所
定の歪レベルよりも小さい場合にハイレベルの信
号をAND回路１０の一方の入力に与える。 The output of the tuner 2 is also given to a distortion level detection circuit 8 that detects the distortion level of the output, and the other output of the tuner 2 is given to a reception level detection circuit 6 that detects the reception level. Although not shown, the distortion level detection circuit 8 includes, for example, an HPF (Hing Pass) that processes distortion components as harmonic components.
It consists of a filter, an amplifier, a comparator, etc. In other words, although the output of tuner 2 is an audio signal, it has harmonic components higher than the audio frequency band as distortion components, and the output of tuner 2, which is an audio signal, is filtered out only by harmonic components due to the HPF. is extracted, amplified by an amplifier, and then shaped into a pulse signal by a comparator. The output of the distortion level detection circuit 8 (the above-mentioned pulse signal) is led to a time detection circuit 9 consisting of a timer, a counter, etc., and the timer allows the pulse signal of the distortion level detection circuit 8 to be countered for a certain period of time. counted,
When the number of pulses of the pulse signal is less than a predetermined count value within this fixed time, that is, when the distortion level is smaller than the predetermined distortion level, a high level signal is applied to one input of the AND circuit 10.
一方、受信レベル検出回路６は、現在受信中の
第１の局の受信状態が悪くなり、その受信レベル
があらかじめ設定された所定の受信レベル以下に
なると、コントロール部７に対し、第２の局に同
調周波数を所定時間期間だけ切替えるよう切替指
令を与える。 On the other hand, when the reception condition of the first station currently receiving data deteriorates and its reception level falls below a predetermined reception level, the reception level detection circuit 6 instructs the control unit 7 to switch the second station. A switching command is given to switch the tuning frequency for a predetermined time period.
コントロール部７は、受信レベル検出回路６か
ら切替指令が与えられると、チユーナ２の同調周
波数を所定時間期間だけ第２の局の同調周波数に
設定するようチユーナ２を制御する。すなわち、
コントロール部７は、図示しないが、CPU、
ROM、RAM及び入出力回路を備えたマイクロ
コンピユータ（以下マイコンと称す）並びにマイ
コンからの出力に基づきチユーニング電圧を発生
するチユーニング電圧発生部を有し、ROMには
第１の局、第２の局、第３の局等、同調すべき局
の同調周波数が記憶されている。一方、チユーナ
２は、いわゆるPLLシンセサイザー方式による
電子同調が可能な構成になつており、図示しない
が局部発振回路を有しており、この局部発振回路
はチユーニング電圧発生回路から与えられるチユ
ーニング電圧に応答して所定の局部発振周波数で
発振し、この周波数を基にしていわゆるスーパー
ヘテロダイン方式により特定の局に同調されてチ
ユーナ２からその局の受信信号（オーデイオ信
号）が出力される。 When receiving a switching command from the reception level detection circuit 6, the control section 7 controls the tuner 2 to set the tuning frequency of the tuner 2 to the tuning frequency of the second station for a predetermined period of time. That is,
Although not shown, the control unit 7 includes a CPU,
It has a microcomputer (hereinafter referred to as microcomputer) equipped with ROM, RAM, and input/output circuit, and a tuning voltage generation section that generates a tuning voltage based on the output from the microcomputer. , a third station, etc., the tuning frequencies of the stations to be tuned are stored. On the other hand, the tuner 2 has a configuration that allows electronic tuning using a so-called PLL synthesizer method, and has a local oscillation circuit (not shown), which responds to the tuning voltage applied from the tuning voltage generation circuit. It oscillates at a predetermined local oscillation frequency, and based on this frequency, it is tuned to a specific station by a so-called superheterodyne system, and the tuner 2 outputs a received signal (audio signal) of that station.
また、コントロール部７のマイコンは受信レベ
ル検出回路６からの切替指令を受けると、チユー
ナ２の同調周波数を所定時間期間だけ第２の局の
同調周波数に設定すると共に、第２の局の同調周
波数に設定中に受信した第２の局の受信レベルが
所定レベル以上であることを受信レベル検出回路
６で検出した時、ハイレベル信号をアンド回路１
０の他の入力へ与える。アンド回路１０の出力は
コントロール部７のマイコンへ与えられ、アンド
回路１０の２つの入力が共にハイレベルのとき、
すなわち第２の局の受信レベルが所定の受信レベ
ル以上であり、かつ歪レベルが所定の歪レベル以
下であるときにハイレベル信号がコントロール部
７のマイコンへ与えられ、これにより、マイコン
は、第１の局よりも受信レベルが上で、かつ歪レ
ベルも所定の歪レベル以上を有する第２の局を継
続して受信することを決定し、これまで継続して
きた第１の局の代わりに、第２の局を新たに第１
の局として継続受信する。その後、再び、継続受
信中の第１の局の受信レベルが所定の受信レベル
以下になつた場合は、上述の動作を再び実行し、
常に最良の受信状態の局を受信するよう動作する
ものである。なお、コントロール部７とアンド回
路１０とはチユーナ２の同調周波数を制御する制
御手段を構成している。 Further, upon receiving the switching command from the reception level detection circuit 6, the microcomputer of the control unit 7 sets the tuning frequency of the tuner 2 to the tuning frequency of the second station for a predetermined period of time, and also sets the tuning frequency of the tuner 2 to the tuning frequency of the second station. When the reception level detection circuit 6 detects that the reception level of the second station received while setting
0 to other inputs. The output of the AND circuit 10 is given to the microcomputer of the control section 7, and when both inputs of the AND circuit 10 are at high level,
That is, when the reception level of the second station is above a predetermined reception level and the distortion level is below a predetermined distortion level, a high-level signal is given to the microcomputer of the control section 7, and thereby the microcomputer It is decided to continue receiving a second station whose reception level is higher than that of the first station and whose distortion level is also higher than a predetermined distortion level, and instead of the first station which has been continued until now, Change the second station to the first station
Continuous reception as a station. After that, if the reception level of the first station during continuous reception falls below the predetermined reception level again, the above-mentioned operation is performed again,
It always operates to receive the station with the best reception condition. The control unit 7 and the AND circuit 10 constitute a control means for controlling the tuning frequency of the tuner 2.
ミユーテイング回路３は、コントロール部７が
第２の局を所定時間期間だけ受信するよう制御し
ている場合に、コントロール部７のマイコンによ
つてミユーテイングをオンにするものであり、第
１の局を継続して受信中に、良好な局か否かが決
定される前の第２の局がスピーカ５から吹鳴され
ると、聴取者にとつては不都合であり、良好な局
と判断されて、第１の局として継続して受信され
ることが決定されてから、ミユーテイングがオフ
に制御されるものである。 The muting circuit 3 turns on muting by the microcomputer of the control unit 7 when the control unit 7 controls the reception of the second station for a predetermined period of time, and turns on the muting of the first station. During continuous reception, if a second station is blared from the speaker 5 before it has been determined whether it is a good station or not, it is inconvenient for the listener, and the second station is determined to be a good station. Muting is controlled to be turned off after it is determined that the station will continue to be received as the first station.
つぎに、上記のように構成した本発明の動作を
説明する。 Next, the operation of the present invention configured as described above will be explained.
まず、チユーナ２は第１の局としてＡ局を継続
受信しているとする。Ａ局の受信レベルは受信レ
ベル検出回路６により常にチエツクされ、所定の
受信レベル以上である場合には第２の局には切替
えられずに、Ａ局が継続して受信される。 First, it is assumed that tuner 2 is continuously receiving station A as the first station. The reception level of station A is constantly checked by the reception level detection circuit 6, and if the reception level is higher than a predetermined reception level, the reception level of station A is not switched to the second station and the reception of station A continues.
つぎに、Ａ局の受信レベルが低下して（例え
ば、Ａ局自身の故障や、この受信機を自動車に搭
載して移動することによりＡ局から離れていく場
合等が考えられる）所定の受信レベル以下になる
と、受信レベル検出回路６によりこれが検出され
る。すると、コントロール部７のマイコンは、ま
ず、ミユーテイング回路３に指令を与え、ミユー
テイングをオンにした後（この時点より所定時間
期間が開始する）、ROMに記憶されたＢ局に対
応する同調用のデータを読出し、チユーニング電
圧発生部に出力し、チユーナ２の局部発振回路を
制御して、所定時間期間Ｂ局を第２の局として同
調・受信する。Ｂ局を受信すると、Ｂ局の受信レ
ベルが受信レベル検出回路６によつて検出される
と共に、歪レベルが歪レベル検出回路８によつて
検出される。このＢ局の受信レベルが所定の受信
レベル以上であればコントロール部７を経由して
アンド回路１０の一方の入力端にハイレベル信号
が与えられる。一方、歪レベルが所定の歪レベル
以下であればアンド回路１０の他方の入力端にハ
イレベル信号が与えられる。そして、アンド回路
１０の両入力端が両方ともハイレベルであれば、
アンド回路１０はハイレベル信号をコントロール
部７へ与える。コントロール部７はこれを受け
て、Ｂ局がＡ局よりも受信レベルが良好で、かつ
歪レベルも所定の歪レベルを満足するものである
から、今後はＢ局を継続して受信することを決定
し、ミユーテイング回路３にミユーテイングをオ
フにする指令を与え（この時点で所定時間期間が
終了する）。以後はＢ局を第１の局として継続し
て受信する。 Next, when the reception level of station A decreases (for example, due to a malfunction of station A itself or because the receiver moves away from station A by installing it in a car), the predetermined reception becomes impossible. When the level falls below this level, the reception level detection circuit 6 detects this. Then, the microcomputer in the control unit 7 first gives a command to the mutating circuit 3 to turn on muting (a predetermined time period starts from this point), and then turns on the tuning circuit corresponding to the B station stored in the ROM. The data is read out and output to the tuning voltage generator, and the local oscillation circuit of the tuner 2 is controlled to tune and receive the station B as the second station for a predetermined period of time. When the B station is received, the reception level of the B station is detected by the reception level detection circuit 6, and the distortion level is detected by the distortion level detection circuit 8. If the reception level of the B station is equal to or higher than a predetermined reception level, a high level signal is applied to one input terminal of the AND circuit 10 via the control section 7. On the other hand, if the distortion level is below a predetermined distortion level, a high level signal is applied to the other input terminal of the AND circuit 10. Then, if both input terminals of the AND circuit 10 are both at high level,
AND circuit 10 provides a high level signal to control section 7. In response to this, the control unit 7 determines that since the reception level of station B is better than that of station A, and the distortion level also satisfies the predetermined distortion level, it will continue to receive station B from now on. and gives a command to the mutating circuit 3 to turn off mutating (at this point, the predetermined time period ends). Thereafter, the signal is continuously received from station B as the first station.
もし、上記の動作中、Ｂ局の受信レベルが所定
の受信レベル以下であるか、または、歪レベルが
所定の歪レベル以上であつた場合には、アンド回
路１０の出力はロウレベルとなり、コントロール
部７はこれを受け、Ｂ局は、今後継続して受信す
る局としては不適と判断し、再び、Ａ局を第１の
局として設定しなおすよう制御し、その後、ミユ
ーテイング回路３にミユーテイングをオフする指
令を与える（この時点で所定時間期間が終了す
る）。この後は、受信レベルの低いＡ局を継続し
て受信することになるので、Ａ局の受信レベルが
回復するまで再び上記の動作が繰り返されること
になり、次には、ROMに記憶されている他の
局、例えばＣ、Ｄ…局を順次第２の局として切替
えていき、良好な受信状態を示す局を見つけるま
で以上の動作も繰り返すものである。 During the above operation, if the reception level of the B station is below the predetermined reception level, or if the distortion level is above the predetermined distortion level, the output of the AND circuit 10 becomes low level, and the control section In response to this, station B determines that it is unsuitable as a station to continue receiving from now on, and controls it to reset station A as the first station, and then tells the muting circuit 3 to turn off muting. (at which point the predetermined time period ends). After this, station A, which has a low reception level, will be continuously received, so the above operation will be repeated again until the reception level of station A recovers. Other stations such as stations C, D, etc. are sequentially switched over as the second station, and the above operations are repeated until a station exhibiting good reception conditions is found.
以上説明したように、この発明によれば、第１
の局を受信中に所定時間期間だけ第２の局を受信
するようにチユーナの同調周波数を切替え、第２
の局の信号の受信レベルを検出する受信機におい
て、チユーナにより同調受信した局の受信レベル
を検出する受信レベル検出回路手段と、チユーナ
により同調受信した局の歪レベルを検出する手段
と、所定時間期間に受信した第２の局の受信レベ
ル及び歪レベルをそれぞれ受信レベル検出手段及
び歪レベル検出手段によつて検出し、この検出し
た受信レベルが所定の受信レベル以上でかつ検出
した歪レベルが所定の歪レベル以下である場合
に、第２の局を第１の局として継続して受信する
ようチユーナの同調周波数を制御する制御手段と
を備えたことにより、受信状態の良好な局を、常
に、自動的に受信できるという効果を奏するもの
である。 As explained above, according to the present invention, the first
While receiving the second station, the tuner's tuning frequency is switched so that the second station is received for a predetermined period of time, and the second station is received.
A receiver for detecting the reception level of a signal of a station, comprising: reception level detection circuit means for detecting the reception level of a station tuned and received by the tuner; means for detecting a distortion level of the station tuned and received by the tuner; The reception level and distortion level of the second station received during the period are detected by a reception level detection means and distortion level detection means, respectively, and the detected reception level is equal to or higher than a predetermined reception level and the detected distortion level is a predetermined one. control means for controlling the tuned frequency of the tuner so that the tuner continues to receive the second station as the first station when the distortion level is below the distortion level of the first station. This has the effect that it can be automatically received.
図は本発明の一実施例を示す構成図である。
図において、１はアンテナ、２はチユーナ、３
はミユーテイング回路、４は低周波アンプ、５は
スピーカ、６は受信レベル検出回路、７はコント
ロール部、８は歪レベル検出回路、９は時間検出
回路、１０はアンド回路である。
The figure is a configuration diagram showing an embodiment of the present invention. In the figure, 1 is an antenna, 2 is a tuner, and 3
4 is a muting circuit, 4 is a low frequency amplifier, 5 is a speaker, 6 is a reception level detection circuit, 7 is a control section, 8 is a distortion level detection circuit, 9 is a time detection circuit, and 10 is an AND circuit.
Claims (1)
が所定レベル以下になつたことを検出したとき、
所定時間期間だけ予め記憶されている第２の局を
受信するようにチユーナの同調周波数を切替え、
上記第２の局の信号の受信レベルを検出する受信
機において、上記チユーナにより同調受信した局
の受信レベルを検出する受信レベル検出手段と、
上記チユーナにより同調受信した局の歪レベルを
検出する歪レベル検出手段と、上記所定時間期間
に受信した第２の局の受信レベル及び歪レベルを
それぞれ上記受信レベル検出手段及び歪レベル検
出手段によつて検出し、この検出した受信レベル
が所定の受信レベル以上でかつ検出した歪レベル
以下である場合に、この第２の局を新たな受信局
として継続して受信するよう上記チユーナの同調
周波数を制御する制御手段とを備えたことを特徴
とする受信機。1 When it is detected that the reception level of the first station has fallen below a predetermined level while receiving the first station,
switching the tuning frequency of the tuner to receive a second pre-stored station for a predetermined time period;
In the receiver for detecting the reception level of the signal of the second station, reception level detection means for detecting the reception level of the station tuned and received by the tuner;
Distortion level detection means detects the distortion level of a station tuned and received by the tuner, and the reception level and distortion level of the second station received during the predetermined time period are detected by the reception level detection means and distortion level detection means, respectively. If the detected reception level is higher than a predetermined reception level and lower than the detected distortion level, the tuning frequency of the tuner is adjusted so that the second station is continuously received as a new reception station. A receiver comprising a control means for controlling the receiver.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1540781A JPS57129017A (en) | 1981-02-03 | 1981-02-03 | Receiver |
| DE19823202607 DE3202607A1 (en) | 1981-02-03 | 1982-01-27 | Broadcast receiver |
| SE8200544A SE454037B (en) | 1981-02-03 | 1982-02-01 | RADIORECEIVER |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1540781A JPS57129017A (en) | 1981-02-03 | 1981-02-03 | Receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57129017A JPS57129017A (en) | 1982-08-10 |
| JPH0338780B2 true JPH0338780B2 (en) | 1991-06-11 |
Family
ID=11887871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1540781A Granted JPS57129017A (en) | 1981-02-03 | 1981-02-03 | Receiver |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS57129017A (en) |
| DE (1) | DE3202607A1 (en) |
| SE (1) | SE454037B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3718845A1 (en) * | 1987-06-05 | 1988-12-15 | Thomson Brandt Gmbh | Receiving set for broadcast signals with an additional information contained therein (RDS) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5547741A (en) * | 1978-10-02 | 1980-04-04 | Trio Kenwood Corp | Fm receiver |
| JPS56146B2 (en) * | 1975-10-14 | 1981-01-06 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56146U (en) * | 1979-06-15 | 1981-01-06 | ||
| NL8000509A (en) * | 1980-01-28 | 1981-08-17 | Philips Nv | RECEIVER WITH A TRANSMITTER SWITCH. |
| NL8003087A (en) * | 1980-05-29 | 1982-01-04 | Philips Nv | RECEIVER WITH A TRANSMITTER SWITCH. |
| DE3034155C2 (en) * | 1980-09-11 | 1985-10-10 | Becker Autoradiowerk Gmbh, 7516 Karlsbad | Method and circuit arrangement for tuning a radio receiver |
-
1981
- 1981-02-03 JP JP1540781A patent/JPS57129017A/en active Granted
-
1982
- 1982-01-27 DE DE19823202607 patent/DE3202607A1/en not_active Withdrawn
- 1982-02-01 SE SE8200544A patent/SE454037B/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56146B2 (en) * | 1975-10-14 | 1981-01-06 | ||
| JPS5547741A (en) * | 1978-10-02 | 1980-04-04 | Trio Kenwood Corp | Fm receiver |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57129017A (en) | 1982-08-10 |
| SE454037B (en) | 1988-03-21 |
| SE8200544L (en) | 1982-08-04 |
| DE3202607A1 (en) | 1982-09-02 |
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