JPS6230342Y2 - - Google Patents
Info
- Publication number
- JPS6230342Y2 JPS6230342Y2 JP13621880U JP13621880U JPS6230342Y2 JP S6230342 Y2 JPS6230342 Y2 JP S6230342Y2 JP 13621880 U JP13621880 U JP 13621880U JP 13621880 U JP13621880 U JP 13621880U JP S6230342 Y2 JPS6230342 Y2 JP S6230342Y2
- Authority
- JP
- Japan
- Prior art keywords
- receiver
- circuit
- mode
- reception
- switch
- 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
Links
- 230000004044 response Effects 0.000 claims description 2
- 108091006146 Channels Proteins 0.000 claims 5
- 230000003321 amplification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 244000145845 chattering Species 0.000 description 1
- 230000006266 hibernation Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Circuits Of Receivers In General (AREA)
Description
【考案の詳細な説明】
本考案は、TV受信機と放送波用のFM受信機
とを備えた受信装置において、TV受信とFM受
信とを切替えるTV−FM切替回路に関するもの
である。[Detailed Description of the Invention] The present invention relates to a TV-FM switching circuit that switches between TV reception and FM reception in a receiving device that includes a TV receiver and an FM receiver for broadcast waves.
近来、TV放送の音声ステレオ化に伴ない、TV
受信機とFM受信機とを組み合せた受信装置が出
現すると共に、TV放送波の受信チヤネルを選択
するためには、従来の回転切替形チユーナに代え
て、押ボタンスイツチ形のワンタツチ・チユーナ
が用いられる傾向にあり、TV放送波の受信チヤ
ネル選択と同様、押ボタンスイツチによりFM放
送波の受信チヤネル選択も行なえるものとする要
求が生じている。 Recently, with the shift to stereo audio for TV broadcasts, TV
With the advent of receivers that combined a receiver and an FM receiver, one-touch tuners in the form of push-button switches were used in place of the conventional rotary switching tuners to select the receiving channel of TV broadcast waves. As a result, there is a demand for a push-button switch that can be used to select a reception channel for FM broadcast waves, similar to the selection of a reception channel for TV broadcast waves.
本考案は、かゝる要求を完全に充足する目的を
有し、受信チヤネル選択用として設けられた複数
の押ボタンスイツチ中から、特定のものをFM受
信用として定めたうえ、これの操作により、自動
的にTV受信状態からFM受信状態への切替えを
行なうことのできる極めて便利なTV−FM切替
回路を提供するものである。 The purpose of this invention is to completely satisfy such requirements, and by selecting a specific pushbutton switch for FM reception from among a plurality of pushbutton switches provided for selecting reception channels, the switch can be operated to The present invention provides an extremely convenient TV-FM switching circuit that can automatically switch from a TV reception state to an FM reception state.
以下、実施例を示すブロツク図により本考案の
詳細を説明する。 Hereinafter, details of the present invention will be explained with reference to block diagrams showing embodiments.
同図において、受信チヤネル選択用の選択部
SELには、μPC1360形集積回路（日本電気株式
会社製）等が用いられており、受信チヤネル選択
用の押ボタンスイツチS1〜Ｓoの操作に応じ、あ
らかじめ、押ボタンスイツチS1〜Ｓoと対応して
制御電圧プリセツトPRVへプリセツトされてい
るデータに基づき、制御電圧CVを送出し、これ
によつて電圧制御形のTVチユーナTUNTおよび
FMチユーナTUNFを制御すると同時に、チヤネ
ル選択に応じて受信チヤネル表示用の出力を生
じ、これを電流制限用の抵抗器R1〜Ｒoを介して
発光ダイオードLD1〜LDoへ与えることにより、
選択された受信チヤネルの表示を行なうものとな
つている。 In the figure, a selection section for selecting a reception channel is shown.
The SEL uses a μPC1360 type integrated circuit (manufactured by NEC Corporation), and in response to the operation of the push button switches S 1 to S o for selecting reception channels, the SEL selects the push button switches S 1 to S o in advance. Based on the data preset in the control voltage preset PRV in accordance with
At the same time as controlling the FM tuner TUN F , an output for displaying the receiving channel is generated according to the channel selection, and this is applied to the light emitting diodes LD 1 to LD o via the current limiting resistors R 1 to R o . ,
The selected reception channel is displayed.
また、この例では、モード切替用のスイツチ回
路SW1により、電源ＶCをTV受信機RXTおよび
FM受信機RXFへ切替えのうえ印加するものとな
つており、図示の状態では、TV受信機RXTを動
作状態としFM受信機RXFを休止状態とするTVモ
ードとなつているが、スイツチ回路SW1の動作に
より、TV受信機RXTを休止状態としFM受信機
RXFを動作状態とするFMモードへ切替わるもの
となつている。 In addition, in this example, the mode switching switch circuit SW1 connects the power supply V C to the TV receiver RX T and
The signal is applied after switching to the FM receiver RX F. In the illustrated state, the TV mode is in which the TV receiver RX T is in the operating state and the FM receiver RX F is in the dormant state. By the operation of circuit SW 1 , the TV receiver RX T is put into the hibernation state and the FM receiver is
It is designed to switch to FM mode with RX F in operation.
一方、中間周波増幅段以降のTV受信部RXCT
からは、ブラウン管CRTに対する映像信号およ
び偏向信号が送出されると共に、音声出力ＡL1，
ＡR1が送出され、中間周波増幅段以降のFM受信
部RXCFからは、音声出力ＡL2，ＡR2のみが送出
されるものとなつており、スイツチ回路SW1と同
時に動作する音声切替用のスイツチ回路SW2，
SW3により、TV受信機RXTおよびFM受信機RXF
における動作状態のものから、音声出力ＡL1，Ａ
R1またはＡL2，ＡR2を選択し、音声出力段として
の音声電力増幅器PAL，PARへ接続するものとな
つている。 On the other hand, the TV receiving section RXC T after the intermediate frequency amplification stage
, a video signal and a deflection signal for the cathode ray tube CRT are sent out, and audio outputs A L1 ,
A R1 is sent out, and only the audio outputs A L2 and A R2 are sent out from the FM receiving section RXC F after the intermediate frequency amplification stage. Switch circuit SW 2 ,
SW 3 allows TV receiver RX T and FM receiver RX F
From those in the operating state, the audio outputs A L1 , A
R1 or A L2 and A R2 are selected and connected to audio power amplifiers P A L and P A R as an audio output stage.
このほか、この例では押ボタンスイツチS1〜S3
がFM受信用となつており、これらと対応する受
信チヤネル表示用の出力が、ダイオードD1〜D3
からなる論理和回路ORの入力へ与えられ、押ボ
タンスイツチS1〜S3と対応する複数の受信チヤネ
ル表示用出力中におけるいずれかに正電圧が生ず
ると、これが論理和回路ORの出力となり、FM
受信用のスイツチＳFをオンとしておけば、直列
抵抗器ＲSを介して積分回路INTへ与えられ、同
回路INTによるチヤツタリングおよび雑音の除去
作用を受けたのち、各スイツチ回路SW1〜SW3を
制御し、これらを動作させて、電源ＶCをFM受
信機RXFへ印加すると同時に音声出力ＡL2，ＡR2
を音声電力増幅器PAL，PARへ与え、FMモード
へ切替えるため、スピーカSPL，SPRから選択さ
れた受信チヤネルのFM放送波による音声が送出
される。 In addition, pushbutton switches S 1 to S 3 are used in this example.
are for FM reception, and the outputs for displaying the reception channels corresponding to these are the diodes D 1 to D 3
When a positive voltage is applied to the input of the OR circuit OR consisting of the pushbutton switches S1 to S3 and any one of the corresponding outputs for displaying the reception channels, this becomes the output of the OR circuit OR, FM
When the receiving switch S F is turned on, the signal is applied to the integrating circuit INT via the series resistor R S , and after being subjected to the chattering and noise removal action of the circuit INT, it is sent to each switch circuit SW 1 to SW 3 . , operate these, apply power supply V C to FM receiver RX F , and at the same time output audio output A L2 , A R2
is applied to the audio power amplifiers PAL and PAR , and in order to switch to the FM mode, the audio using the FM broadcast wave of the selected receiving channel is transmitted from the speakers SP L and SPR .
なお、押ボタンスイツチS4〜Ｓoの操作によつ
ては、論理和回路ORの出力が消滅し、各スイツ
チSW1〜SW3が復旧してTVモードとなり、ブラ
ウン管CRTにより映像が表示されると共にスピ
ーカSPL，SPRからはTV放送波による音声が送出
される。 Furthermore, depending on the operation of the pushbutton switches S 4 to S o , the output of the logical sum circuit OR disappears, each switch SW 1 to SW 3 is restored to TV mode, and images are displayed on the cathode ray tube CRT. At the same time, the speakers S L and S R transmit audio using TV broadcast waves.
以上のとおり、押ボタンスイツチS1〜Ｓoの操
作に応じて、TVモードとFMモードとの切替え
が自動的に行なわれるが、スイツチ回路SW1〜
SW3としては、半導体スイツチ、リレー等を用い
ればよく、条件に応じては、論理和回路ORとし
てORゲート、NORゲート等を用いることができ
る。 As described above, switching between TV mode and FM mode is automatically performed according to the operation of the pushbutton switches S 1 to S o , but the switch circuit SW 1 to
As the SW 3 , a semiconductor switch, a relay, etc. may be used, and depending on the conditions, an OR gate, a NOR gate, etc. may be used as the logical sum circuit OR.
また、場合によつては、スイツチＳFおよび積
分回路INTを省略することも可能であり、各スイ
ツチ回路SW1〜SW3を常時FMモード側としてお
き、押ボタンスイツチS1〜Ｓo中のTV受信用のも
のを操作したときにTVモード側へ切替わるもの
としても同様である。 In some cases, it is also possible to omit the switch S F and the integrating circuit INT, so that each switch circuit SW 1 to SW 3 is always set to the FM mode, and the push button switches S 1 to S O are The same applies to devices that switch to the TV mode side when operating the device for TV reception.
このほか、押ボタンスイツチS1〜Ｓo中のFM受
信用とTV受信用との数は、受信すべきFM放送
波とTV放送波とのチヤネル数に応じて定めれば
よく、電源ＶCの印加を切替えず、TV受信機RXT
とFM受信機RXFとの、いずれかの部位の動作を
制御してもよい等、本考案は種々の変形が自在で
ある。 In addition, the number of pushbutton switches S 1 to S o for FM reception and for TV reception may be determined according to the number of channels of FM broadcast waves and TV broadcast waves to be received, TV receiver RX T without switching the application of
The present invention can be modified in various ways, such as controlling the operation of any part of the receiver and the FM receiver RX F.
以上の説明により明らかなとおり本考案によれ
ば、受信チヤネル選択用の押ボタンスイツチ操作
により、TVとFMとの受信状態切替えが自動的
に行なわれるため、TV受信とFM受信との切替
えが極めて容易となり、かつ、TV放送波の受信
チヤネル選択と同様の操作により、FM放送波の
受信チヤネル選択も行なわれることにより、TV
受信機とFM受信機とを具備する受信装置におい
て多大な効果が得られる。 As is clear from the above explanation, according to the present invention, the reception state between TV and FM is automatically switched by operating the push button switch for selecting the reception channel, so switching between TV reception and FM reception is extremely easy. This makes it easy to select the reception channel for FM broadcast waves using the same operation as selecting the reception channel for TV broadcast waves.
Great effects can be obtained in a receiving device that includes a receiver and an FM receiver.
図は本考案の実施例を示すブロツク図である。
RXT……TV受信機、RXF……FM受信機、SW1
〜SW3……スイツチ回路、PAL，PAR……音声電
力増幅器（音声出力段）、S1〜Ｓo……押ボタンス
イツチ、SEL……選択部、OR……論理和回路、
ＡL1，ＡR1，ＡL2，ＡR2……音声出力。
The figure is a block diagram showing an embodiment of the present invention. RX T ...TV receiver, RX F ...FM receiver, SW 1
~SW 3 ...Switch circuit, PA L , PA R ...Audio power amplifier (audio output stage), S1 ~ S o ...Push button switch, SEL...Selection section, OR...Order circuit,
A L1 , A R1 , A L2 , A R2 ...Audio output.
Claims (1)
受信装置において、前記TV受信機を動作状態と
し前記FM受信機を休止状態とするモードおよび
前記TV受信機を休止状態とし前記FM受信機を
動作状態とするモードを切替えるモード切替用の
スイツチ回路と、該モード切替用のスイツチ回路
と同時に動作し前記TV受信機およびFM受信機
における動作状態のものから音声出力を選択して
音声出力段へ接続する音声切替用のスイツチ回路
と、受信チヤネル選択用の選択部からチヤネル選
択に応じて生ずる受信チヤネル表示用の出力にお
けるFM放送チヤネルと対応する複数の出力を入
力としかつ出力により前記各スイツチ回路を制御
する論理和回路とからなることを特徴とするTV
−FM切替回路。 In a receiving device including a TV receiver and an FM receiver for broadcast waves, there is a mode in which the TV receiver is in an operating state and the FM receiver is in a dormant state, and a mode in which the TV receiver is in a dormant state and the FM receiver is in a dormant state. A mode switching switch circuit that switches the mode in which the TV receiver and the FM receiver are in the operating state operates simultaneously with the mode switching switch circuit that selects the audio output from the operating states of the TV receiver and the FM receiver, and outputs the audio output stage. A switch circuit for audio switching connected to the input channel, and a plurality of outputs corresponding to the FM broadcast channels in the output for displaying the reception channel generated in response to channel selection from the selection section for selecting the reception channel are input, and the outputs are used to connect each of the above-mentioned switches. A TV characterized by comprising an OR circuit that controls the circuit.
-FM switching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13621880U JPS6230342Y2 (en) | 1980-09-25 | 1980-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13621880U JPS6230342Y2 (en) | 1980-09-25 | 1980-09-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5760436U JPS5760436U (en) | 1982-04-09 |
| JPS6230342Y2 true JPS6230342Y2 (en) | 1987-08-04 |
Family
ID=29496338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13621880U Expired JPS6230342Y2 (en) | 1980-09-25 | 1980-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6230342Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0193239U (en) * | 1987-12-11 | 1989-06-19 |
-
1980
- 1980-09-25 JP JP13621880U patent/JPS6230342Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5760436U (en) | 1982-04-09 |
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