JPS61145344U - - Google Patents
Info
- Publication number
- JPS61145344U JPS61145344U JP2824185U JP2824185U JPS61145344U JP S61145344 U JPS61145344 U JP S61145344U JP 2824185 U JP2824185 U JP 2824185U JP 2824185 U JP2824185 U JP 2824185U JP S61145344 U JPS61145344 U JP S61145344U
- Authority
- JP
- Japan
- Prior art keywords
- output
- holding
- tape
- light emitting
- light receiving
- 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
- 230000003111 delayed effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 240000001973 Ficus microcarpa Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Description
図面は全て本考案の実施例に係り、第１図はＬ
ＥＤ、磁気テープ及びホトトランジスタの位置関
係を示す図、第２図は回路ブロツク図、第３図は
タイミングチヤートである。
１……磁気テープ、２……カセツト、３……Ｌ
ＥＤ（発光手段）、４……ホトトランジスタ（受
光手段）、９……制御信号発生手段、２０……判
別手段、２２……第１保持手段、２３……第２保
持手段。
All drawings relate to embodiments of the present invention, and Figure 1 is L.
FIG. 2 is a circuit block diagram, and FIG. 3 is a timing chart. 1...magnetic tape, 2...cassette, 3...L
ED (light emitting means), 4...phototransistor (light receiving means), 9...control signal generating means, 20...discriminating means, 22...first holding means, 23...second holding means.
Claims (1)
と、第１出力と該第１出力に遅延する第２出力と
を発生する制御信号発生手段と、前記第２出力発
生時に発光状態となる発光手段と、テープ走行路
を挾んで前記発光手段と対向的に配置される受光
手段と、前記遅延期間中の第１のタイミングにて
前記受光手段の出力を保持する第１保持手段と、
前記第２出力発生期間中の第２のタイミングにて
前記受光手段出力を保持する第２保持手段と、前
記第１保持手段出力と前記第２保持手段出力より
テープエンドであることを判別する判別手段とか
ら成るテープエンド検出機構。 a cassette in which a transparent tape is disposed at the end of the magnetic tape; a control signal generating means for generating a first output and a second output delayed from the first output; and a light emitting means that enters a light emitting state when the second output is generated. a light receiving means disposed opposite to the light emitting means across the tape running path; a first holding means for holding the output of the light receiving means at a first timing during the delay period;
a second holding means for holding the output of the light receiving means at a second timing during the second output generation period; and a determination for determining that the tape is at the end based on the output of the first holding means and the output of the second holding means. A tape end detection mechanism comprising means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2824185U JPH0445137Y2 (en) | 1985-02-28 | 1985-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2824185U JPH0445137Y2 (en) | 1985-02-28 | 1985-02-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61145344U true JPS61145344U (en) | 1986-09-08 |
| JPH0445137Y2 JPH0445137Y2 (en) | 1992-10-23 |
Family
ID=30525939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2824185U Expired JPH0445137Y2 (en) | 1985-02-28 | 1985-02-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0445137Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6340829U (en) * | 1986-08-28 | 1988-03-17 | ||
| JPH05186140A (en) * | 1992-01-11 | 1993-07-27 | Star Micronics Co Ltd | Photodetector |
-
1985
- 1985-02-28 JP JP2824185U patent/JPH0445137Y2/ja not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6340829U (en) * | 1986-08-28 | 1988-03-17 | ||
| JPH05186140A (en) * | 1992-01-11 | 1993-07-27 | Star Micronics Co Ltd | Photodetector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0445137Y2 (en) | 1992-10-23 |
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