JPS58102354A - Display circuit for operation of tape recorder - Google Patents
Display circuit for operation of tape recorderInfo
- Publication number
- JPS58102354A JPS58102354A JP56202218A JP20221881A JPS58102354A JP S58102354 A JPS58102354 A JP S58102354A JP 56202218 A JP56202218 A JP 56202218A JP 20221881 A JP20221881 A JP 20221881A JP S58102354 A JPS58102354 A JP S58102354A
- Authority
- JP
- Japan
- Prior art keywords
- switch
- light emitting
- emitting diode
- turned
- switches
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/10—Indicating arrangements; Warning arrangements
Landscapes
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はテープレコーダの動作状態を表示する動作表示
装置に係り、簡単な構成で杓生状態、早送り１巻戻し状
態共にほぼ同一の輝度で正確にその動作状態を表示する
ことのできる優れた動作表示回路を提供することを目的
とするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an operation display device for displaying the operating status of a tape recorder, which accurately displays the operating status with almost the same brightness in both the active state and the fast forward/rewind state with a simple configuration. The object of the present invention is to provide an excellent operation display circuit that can perform the following operations.
一般にテープレコーダの動作状態を発光ダイオードの点
滅状態によって表示する」：うに構成し／れものは公知
であるが、この種のものは再生状態。Generally, the operating status of a tape recorder is indicated by the blinking status of a light emitting diode.'': This type of device is known to indicate the playback status.
早送り１巻戻し状態においてそれぞれその輝度が大きく
異なり、一方で明るく明瞭な表示か出来ても、他方で暗
くその表示が不明瞭であるなと余り好ましいものではな
かった。In the fast forwarding and rewinding states, the brightness differs greatly, and while on the one hand the display is bright and clear, on the other hand the display is dark and unclear, which is not very desirable.
本発明は以上のような従来の欠点を除去するものであり
、簡単な構成で優れた表示回路を挾供するものである。The present invention eliminates the above-mentioned conventional drawbacks and provides an excellent display circuit with a simple configuration.
以下、本発明の動作表示回路について一実施例の図面と
ともに説明する。図において、Ｓｌ、Ｓ２は共に再生状
態にしたときオンするスイッチ、Ｓ３は早送り１巻戻し
状態にしたときオンするスイッチ、Ｍはテープ駆動用モ
ータ、Ｄｌ、Ｄ２はダイオード、Ｒは抵抗、Ｄ３は発光
ダイオード、Ａは録音再生増幅器等を含む回路ブロック
である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The operation display circuit of the present invention will be described below with reference to drawings of one embodiment. In the figure, Sl and S2 are switches that are turned on when the playback state is set, S3 is a switch that is turned on when the fast forward/rewind state is set, M is the tape drive motor, Dl and D2 are diodes, R is a resistor, and D3 is a switch that is turned on when the playback state is set. A light emitting diode, A is a circuit block including a recording/reproducing amplifier, etc.
上記実施例において、テープレコーダを再生状
。In the above embodiment, the tape recorder is set to playback mode.
.
態にするとスイッチＳ１．Ｓ２かオンし、電源電圧ｖｃ
ｃ がスイッチＳ１ を介して回路ブロックＡに印加さ
れると共にスイッチＳ２を介してテープ駆動用モータＭ
に印加されテープレコーダが再生動作状態になる。そし
てこの状態ではスイッチＳ１゜Ｓ２、ダイオードＤ１．
Ｄ２、抵抗Ｒを介して発光ダイオードＤ３に電源電圧ｖ
ＣＣが印加され発光ダイオードＤ３が点灯する。switch S1. S2 turns on and the power supply voltage vc
c is applied to the circuit block A through the switch S1, and is applied to the tape drive motor M through the switch S2.
is applied to put the tape recorder into playback mode. In this state, switches S1, S2, diodes D1, .
D2, the power supply voltage v is applied to the light emitting diode D3 via the resistor R.
CC is applied and the light emitting diode D3 lights up.
次に早送り９巻戻し状態にしたとする。この場合にはス
イッチＳ３がオンし、スイッチＳ３を介してテープ駆動
用モータＭに電源電圧ｖＣＣが印加され、同時にスイッ
チＳ３、ダイオードＤ２、抵抗Ｒを介して発光ダイオー
ドＰ３に電源電圧ｖｃｃが印加される。したがって、こ
の場合も再生時と同じように発光ダイオードＰ３が点灯
しその動作状態を表示することになる。Next, assume that the state is set to fast forward nine rewinds. In this case, the switch S3 is turned on, and the power supply voltage vCC is applied to the tape drive motor M through the switch S3, and at the same time, the power supply voltage vCC is applied to the light emitting diode P3 through the switch S3, the diode D2, and the resistor R. Ru. Therefore, in this case as well, the light emitting diode P3 lights up to display its operating state, as in the case of reproduction.
ところで、発光ダイオードＤ３そのものに印加される電
圧は再生時と早送り９巻戻し時とで若干相違するが、そ
の差はダイオードＤ２にダイオードＤ１が並列接続され
るかどうかの違いだけであり極く僅かである。したがっ
て実質的に上記実施例によれば再生時、巻送り２巻戻し
時共にほぼ同一の明るさで発光ダイオードＤ３を点灯さ
せることができ、その表示を著しく明瞭にすることがで
きる。By the way, the voltage applied to the light emitting diode D3 itself is slightly different during playback and during fast forwarding and rewinding, but the difference is only in whether diode D1 is connected in parallel to diode D2 and is extremely small. It is. Therefore, substantially according to the above embodiment, the light emitting diode D3 can be lit with almost the same brightness during playback, forwarding and rewinding, and the display can be made extremely clear.
以上、実施例より明らかなように本発明の動作番
表示回路は再生時にオンする第１のスイッチＳ１の出力
側に録音再生増幅器を含む回路ブロックを接続し、第２
のスイッチＳ２の出力側にテープ駆動用モータを接続す
ると共に上記スイッチＳ１．Ｓ２の出力側にそれぞれダ
イオードＤ１．Ｄ２を接続し、その共通接続点に抵抗Ｒ
を介して発光ダイオードＤ３を接続し、早送り１巻戻し
時にオンするスイッチＳ を第２のスイッチＳ２に並列
に接続したものであり、再生時と早送り２巻戻し時の発
光ダイオードの点灯状態をほぼ同一にすることができ、
いずれの場合も明るく明瞭な表示を行なうことができる
という利点を有する。そして、本発明によれば発光ダイ
オードＤ３に抵抗Ｒを直列に接続しているため、この抵
抗Ｈによって発光ダイオードＤ３の点灯時の明るさを任
意に設定することができ、実用上きわめて有利である。As is clear from the above embodiments, the operation number display circuit of the present invention connects a circuit block including a recording/playback amplifier to the output side of the first switch S1 that is turned on during playback, and
A tape drive motor is connected to the output side of the switch S2 of the switch S1. A diode D1. Connect D2 and connect the resistor R to their common connection point.
A light emitting diode D3 is connected through the switch S, and a switch S that is turned on when fast forwarding and rewinding is connected in parallel to a second switch S2. can be the same,
In either case, there is an advantage that bright and clear display can be performed. According to the present invention, since the resistor R is connected in series to the light emitting diode D3, the brightness of the light emitting diode D3 when lit can be arbitrarily set by the resistor H, which is extremely advantageous in practice. .
図は本発明のテープレコーダの動作表示回路における一
実施例の電気的結線図である。
Ｓｌ、Ｓ２ ・−再生状態でオンするスイッチ、Ｓ３
・−早送り２巻戻し状態でオンするスイッチ、Ｍ・・・
モータ、Ｄｌ、Ｄ２・・・・ダイオード、Ｒ・・・・抵
抗、Ｄ３ ・・・−発光ダイオード、Ａ−・・回路ブ
ロック。The figure is an electrical wiring diagram of an embodiment of the operation display circuit for a tape recorder according to the present invention. Sl, S2 ・-Switch turned on during playback, S3
・-Switch turned on in fast forward and rewind states, M...
Motor, Dl, D2...Diode, R...Resistor, D3...-Light emitting diode, A-...Circuit block.
Claims (1)
早送り２巻戻し状態にしたときオンする第３のスイッチ
を有し、第１のスイッチの出力側に録音、再生増咄器を
含む回路ブロックを接続すると共に第１のダイオードを
接続し、第２のスイッチの出力側にテープ、駆動用モ〜
りを接続すると共に第２のダイオードを接続し第１．第
２のダイオードの共通接続点に抵抗を介して発光ダイオ
ードを接続し、第３のスイッチを第２のスイッチに対し
て並列に接続してなるテープレコーダの動作表示回路。The first switch that turns on when the playback mode is activated. a second switch;
It has a third switch that is turned on when the fast forward and rewind states are set, and a circuit block including a recording and playback amplifier is connected to the output side of the first switch, and a first diode is connected to the output side of the first switch. Tape on the output side of the switch, drive motor
and the second diode. A tape recorder operation display circuit comprising a light emitting diode connected to a common connection point of the second diode via a resistor, and a third switch connected in parallel to the second switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56202218A JPS58102354A (en) | 1981-12-14 | 1981-12-14 | Display circuit for operation of tape recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56202218A JPS58102354A (en) | 1981-12-14 | 1981-12-14 | Display circuit for operation of tape recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58102354A true JPS58102354A (en) | 1983-06-17 |
| JPS6214899B2 JPS6214899B2 (en) | 1987-04-04 |
Family
ID=16453910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56202218A Granted JPS58102354A (en) | 1981-12-14 | 1981-12-14 | Display circuit for operation of tape recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58102354A (en) |
-
1981
- 1981-12-14 JP JP56202218A patent/JPS58102354A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6214899B2 (en) | 1987-04-04 |
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