JPH0159923U - - Google Patents
Info
- Publication number
- JPH0159923U JPH0159923U JP15351287U JP15351287U JPH0159923U JP H0159923 U JPH0159923 U JP H0159923U JP 15351287 U JP15351287 U JP 15351287U JP 15351287 U JP15351287 U JP 15351287U JP H0159923 U JPH0159923 U JP H0159923U
- Authority
- JP
- Japan
- Prior art keywords
- changing
- detecting
- detection
- detecting means
- beginning
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Description
第1図は本考案の実施例の回路ブロツク図、第
2図は平面図、第3図は従来例の構成を示すブロ
ツク図、第4図は動作の説明図である。
1……発光ダイオード、2……フオトトランジ
スタ、10……始終端付近検出手段、11……感
度変更手段。
FIG. 1 is a circuit block diagram of an embodiment of the present invention, FIG. 2 is a plan view, FIG. 3 is a block diagram showing the configuration of a conventional example, and FIG. 4 is an explanatory diagram of the operation. DESCRIPTION OF SYMBOLS 1...Light emitting diode, 2...Phototransistor, 10...Start/end vicinity detection means, 11...Sensitivity changing means.
Claims (1)
この検出手段出力に応じて検出感度を変更する変
更手段と、この変更手段が接続された光検出手段
とよりなる始終端検出装置。 detection means for detecting that it is near the beginning and end;
A start/end detection device comprising a changing means for changing the detection sensitivity according to the output of the detecting means, and a light detecting means to which the changing means is connected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15351287U JPH0159923U (en) | 1987-10-07 | 1987-10-07 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15351287U JPH0159923U (en) | 1987-10-07 | 1987-10-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0159923U true JPH0159923U (en) | 1989-04-14 |
Family
ID=31429418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15351287U Pending JPH0159923U (en) | 1987-10-07 | 1987-10-07 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0159923U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0432059A (en) * | 1990-05-29 | 1992-02-04 | Sharp Corp | Magnetic recording and reproducing device |
-
1987
- 1987-10-07 JP JP15351287U patent/JPH0159923U/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0432059A (en) * | 1990-05-29 | 1992-02-04 | Sharp Corp | Magnetic recording and reproducing device |