JPS5945754U - Tape end detection device - Google Patents
Tape end detection deviceInfo
- Publication number
- JPS5945754U JPS5945754U JP14100782U JP14100782U JPS5945754U JP S5945754 U JPS5945754 U JP S5945754U JP 14100782 U JP14100782 U JP 14100782U JP 14100782 U JP14100782 U JP 14100782U JP S5945754 U JPS5945754 U JP S5945754U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- amplifier
- tape
- detection device
- output signal
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はカセットテープなどのテープ端付近の構造を示
す図、第２図は本考案になるテープ端検出装置の一実施
例の回路図、第３図Ａ乃至第３図Ｆは第２図の回路各部
の橘号波形図である。
１・・・発振器、２・・・電源端子１，３・・・出力端
子、Ｒ工〜Ｒ１□・・・抵抗、０１〜Ｃ４・・・コンデ
ンサ、Ｘｌ・・・ＮＰＮトランジスタ、Ｘ２・・・フォ
トトランジスタ、Ｄｌ・・−発光ダイオード、Ｄ２・・
・ダイオード、ｏｐｏ、 ＯＦ２゜ＯＦ２・・・演算増
幅器、Ｙ・・・定電流回路。Fig. 1 is a diagram showing the structure near the end of a tape such as a cassette tape, Fig. 2 is a circuit diagram of an embodiment of the tape end detection device of the present invention, and Figs. 3A to 3F are Fig. 2. FIG. 3 is a waveform diagram of each part of the circuit. 1... Oscillator, 2... Power terminal 1, 3... Output terminal, R engineering ~ R1□... Resistor, 01-C4... Capacitor, Xl... NPN transistor, X2... Phototransistor, Dl... - Light emitting diode, D2...
・Diode, opo, OF2゜OF2... operational amplifier, Y... constant current circuit.
Claims (1)
過させた点減光を受光素子で検出した検出信号を増幅す
る増幅器を備え、さらに該増幅器の出力信号を検波整流
したのちに積分した信号と、該増幅器の出力信号を所定
電圧降下させた信号とを比較することにより上記検出信
号に対応した所定の極性のパ゛ルス信号を所定期間取り
出す演算増幅器を設け、該演算増幅器の出力信号によ一
すテープ端の検出を行なうよう構成したテープ端検出装
置。It is equipped with an amplifier that reflects or transmits point dimming light on the tape surface, amplifies a detection signal detected by a light receiving element from the reflected or transmitted point dimming light, and further integrates the output signal of the amplifier after detecting and rectifying it. An operational amplifier is provided for extracting a pulse signal of a predetermined polarity corresponding to the detection signal for a predetermined period by comparing the signal and a signal obtained by lowering the output signal of the amplifier by a predetermined voltage, and the output signal of the operational amplifier is A tape end detection device configured to detect an end of a tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14100782U JPS5945754U (en) | 1982-09-17 | 1982-09-17 | Tape end detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14100782U JPS5945754U (en) | 1982-09-17 | 1982-09-17 | Tape end detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5945754U true JPS5945754U (en) | 1984-03-27 |
| JPH0416256Y2 JPH0416256Y2 (en) | 1992-04-13 |
Family
ID=30315503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14100782U Granted JPS5945754U (en) | 1982-09-17 | 1982-09-17 | Tape end detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5945754U (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS438696Y1 (en) * | 1965-12-08 | 1968-04-17 | ||
| JPS532208U (en) * | 1976-06-24 | 1978-01-11 | ||
| JPS5693846U (en) * | 1979-12-17 | 1981-07-25 | ||
| JPS56117351A (en) * | 1980-02-18 | 1981-09-14 | Sanyo Electric Co Ltd | Tape run control circuit of tape recorder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS532208B2 (en) * | 1973-07-23 | 1978-01-26 |
-
1982
- 1982-09-17 JP JP14100782U patent/JPS5945754U/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS438696Y1 (en) * | 1965-12-08 | 1968-04-17 | ||
| JPS532208U (en) * | 1976-06-24 | 1978-01-11 | ||
| JPS5693846U (en) * | 1979-12-17 | 1981-07-25 | ||
| JPS56117351A (en) * | 1980-02-18 | 1981-09-14 | Sanyo Electric Co Ltd | Tape run control circuit of tape recorder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0416256Y2 (en) | 1992-04-13 |
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